JPH0343009B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method and apparatus for machining roll grooves using an end mill.

(Prior art) Traditionally, steel bars have been used as reinforcement for building structures due to their adhesive strength with concrete and ease of construction.
Various deformed steel bars with corrugated nodes, parallel nodes, screw-shaped nodes, etc. have been proposed. It is necessary to machine a knot groove for this purpose.

In addition, there is a demand for deformed steel bars in which grooves such as corrugated grooves are formed in the steel bars, and in order to roll such deformed steel bars, the caliber of the rolling roll must have nodes to form the grooves in the steel bars. It needs to be processed.

Furthermore, in order to roll a striped steel plate on which striped pattern protrusions are formed, it is necessary to process grooves for forming the striped pattern protrusions on the steel plate on the outer periphery of the rolling roll.

Furthermore, in order to make marks such as letters and symbols on the steel bar or steel plate, it is necessary to process mark grooves on the outer periphery of the rolling roll or on the caliber for marking the steel bar or steel plate.

Additionally, the caliber of the rolling roll needs to be knurled.

Conventionally, electric discharge machining has been generally employed as a method for machining such knots and grooves on rolling rolls.

This electric discharge machining method is used to
An electrode with a shape equivalent to a pitch or two pitches is prepared for each product size (as a steel bar), and by the electric discharge action of the electrode, a nodule is machined to the required depth in the caliber of the rolling roll. Although chamfering is now applied to the
The machining process requires two steps, which, together with the low machinability of electric discharge machining, requires a long machining time, so it is necessary to have a large number of spare rolling rolls.

Furthermore, when re-grinding a rolling roll during repeated use, in order to equally divide the nodal grooves around the roll's outer periphery, the outer diameter is naturally constrained, so the amount of cutting is inevitably large. This has led to an increase in production costs due to an increase in roll costs that account for rolling costs.

From this point of view, instead of the above electric discharge machining method,
Mechanical cutting methods are being considered, but due to the uniqueness of machining various knot grooves on the outer periphery of the rolling roll and on the bottom and shoulder of the caliber, machining is not possible. was extremely difficult.

That is, the conventionally proposed machining method is to machine the knot grooves 4 in the caliber 3 of the rolling roll 2 using the flying tool 1, as shown in FIGS. 31a to 31c. Only knot grooves could be machined, and corrugated or screw-shaped knot grooves could not be machined.

Furthermore, it is possible to machine the knot grooves 4 for the arc-shaped caliber 3 as shown in Fig. 32a, but as shown in Fig. 32b, it is necessary to create a space for width adjustment of the rolling mill in the shoulder portion 3a. In the caliber 3' having the shoulder part 3a
It was not possible to cut to the required depth.

Furthermore, even with this machining method, since it is necessary to perform chamfering after the knot groove machining, there is a problem that the machining process becomes two steps and the machining time is long.

(Object of the Invention) The present invention has been made in view of the problems of the above-mentioned machining method. It is an object of the present invention to provide a method and apparatus for forming grooves on a roll, which enables accurate and rapid processing.

(Structure of the Invention) Therefore, the first aspect of the present invention is a method for machining a groove in a caliber of a rolling roll using an end mill having a chamfered part formed on the cutting edge, wherein the rear part is one shoulder of the caliber. With the end mill tilted within an angle range that does not contact the caliber, place the end mill tip against the other shoulder of the caliber,
While the end mill is oscillated around the oscillation center toward the bottom of the caliber, the oscillation center of the end mill is moved along a predetermined trajectory relative to the caliber center to machine a groove in the caliber shoulder, and then, The present invention provides a method for machining grooves in a rolling roll, characterized in that a groove is machined on the bottom of a caliber while an end mill is oscillated around the center of the caliber.

Further, in addition to the configuration of the first invention, the second invention is such that the rolling roll is rotated around the roll axis in synchronization with the grooving of the shoulder part and the bottom part of the caliber. It is characterized by

Furthermore, the third aspect of the present invention is an apparatus for machining grooves in a rolling roll using an end mill, which comprises: a base for rotatably supporting the rolling roll; a parallel movement table that is movable in a parallel direction; a right-angle movement table supported by the parallel movement table and movable in a direction perpendicular to the rolling roll; and a right-angle movement table supported by the right-angle movement table and horizontal to the roll a rocking table that is freely swingable; a head supported by the rocking table and rotatably supported by the end mill; a device that controls the rocking angle of the rocking table; This configuration consists of a device that controls the amount of relative movement.

In addition to the third invention, a fourth aspect of the present invention provides for controlling the rotation angle of the rolling rolls in synchronization with the amount of movement of the parallel movement table and the orthogonal movement table and the rocking angle of the rocking table. The configuration consists of a device that performs

(Effects of the Invention) According to the first aspect of the present invention, it is possible to smoothly perform groove processing on the shoulder of the caliber without causing an end mill having a chamfered portion on the cutting edge to interfere with the shoulder of the caliber, and Following the grooving of the caliber, it is possible to smoothly transition to the grooving of the bottom of the caliber, and the shoulder and bottom of the caliber can be continuously processed, making it possible to perform grooving accurately and quickly.

Furthermore, by appropriately setting the locus of movement of the swing center of the end mill, it becomes possible to perform cutting to the required depth even with a caliber having a width-setting space for the rolling mill in its shoulder.

Furthermore, according to the second invention, since the rolling rolls are rotated synchronously, in addition to the effects of the first invention, it is possible to accurately and smoothly process corrugated or screw-shaped grooves. I can do it.

On the other hand, according to the third aspect of the present invention, while the end mill is oscillated by the oscillating table, the center of oscillation of the end mill is moved along a predetermined trajectory by the right-angle moving table and the parallel moving table. Since the outer periphery or caliber knot grooves, knots, striped pattern grooves, mark grooves, and knurling are processed, parallel-shaped knot grooves and the like can be processed accurately and quickly.

In addition, by appropriately setting the movement locus of the end mill's swing center using a right-angle moving table and a parallel moving table, it becomes possible to perform cutting to the required depth even with a caliber that has a space for rolling mill width on the shoulder. .

According to the fourth aspect of the invention, the rolling roll is rotated in synchronization with moving the center of oscillation of the end mill along a predetermined trajectory while oscillating the end mill. In addition to the effect of the third invention, it is possible to accurately and quickly process knots and grooves of any shape.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, a base (bed) 1 that supports a rolling roll 11 is placed on a work floor 10.
2 is installed, and on one side (left side) of the base 12,
Main shaft 1 supporting one end 11a of the rolling roll 11
A spindle head 14 with a base 1 is provided.
A tail stock 16 is provided on the other side (right side) of 2 and is provided with a center shaft 15 that supports the other end 11b of the rolling roll 11.

The main shaft 13 and one end 11a of the rolling roll 11
This means that there is a tightening fitting 17 on the end of the roll shaft that clamps the parallel part that connects to the coupling ring of the drive shaft.
(see Figure 4), and the main shaft motor 1
8, the main shaft 13 rotates the rolling roll 1.
1 is rotated at a predetermined speed.

A table portion 20 extending parallel to the roll roll 11 is formed on the base 12, and a parallel movement table 21 is supported on the table portion 20 so as to be able to reciprocate in a direction parallel to the roll roll 11. ing.

The parallel movement table 21 is connected to a screw shaft 23 driven by a parallel movement motor 22 installed on the other side (right side) of the base. Translation table 21
is moved back and forth at a predetermined speed.

A table portion 25 extending perpendicularly to the rolling roll 11 is formed on the parallel moving table 21, and a rectangular moving table 26 is supported on the table portion 25 so as to be able to reciprocate in the direction perpendicular to the rolling roll 11. has been done.

The orthogonal moving table 26 is connected to a screw shaft (not shown) that is driven by a orthogonal moving motor 27 installed at the bottom of the parallel moving table 21, and is driven by the orthogonal moving motor 27. As a result, the right angle moving table 26 is moved back and forth at a predetermined speed.

As shown in FIG. 3, FIG. 4, and FIG. A rocking table 29 is supported which can swing back and forth in the horizontal direction.

The rocking table 29 has a pinion 31 (see FIG. 8) driven by a rocking motor 30 installed at the rear of the rocking table 29 that meshes with a semicircular gear 32 mounted on the right-angle moving table 26. By driving the swing motor 30, the swing table 29 is reciprocated about the swing shaft 28 at a predetermined speed by the planetary rotation motion of the pinion 31.

In addition, the details of the right angle moving table 26 and the rocking table 29 are as follows.
This will be explained later with reference to FIGS. 7 and 8.

A head 36 is attached to the rocking table 29, which rotatably supports an end mill 34 for machining corrugated grooves 33C on the outer periphery of the rolling roll 11 or on the caliber via a chuck 35.

As shown in FIG. 3, the center EC of the end mill 34 supported by the chuck 35 is set to coincide with the center RC of the rolling roll 11.

The end mill 34 is rotated at a predetermined speed by a cutter motor 37 installed at the rear of the head 36.

The end mill 34 is equipped with so that machining such as knot grooves and chamfering can be performed at the same time if necessary.
It is preferable that a chamfered portion 34a is formed on the cutting edge.

The details of the head 36 will be explained later with reference to FIG.

As shown in detail in FIGS. 7 and 8, the right-angle moving table 26 is formed in a semicircular shape centered on a swing shaft 28 (see FIG. 5), and on the right-angle moving table 26, The semicircular gear 3 centered on the swing shaft 28
2 is attached (see the same figure).

The center hole 29a at the tip of the swinging table 29 is fitted into the swinging shaft 28, and the hook 29b at the rear lower part is engaged with the outer circumferential groove 26a of the right-angle moving table 26. The upper part of the roller 11 is slid in the horizontal direction with respect to the rolling roll 11 and is oscillated back and forth.

The rocking table 29 is provided with a horizontal shaft 40 supported by bearing members 39, 39, the horizontal shaft 40 is connected to the rocking motor 30, and a worm 41 is mounted on the horizontal shaft 40. It is formed.

Further, the rocking table 29 is provided with a vertical shaft 43 supported by bearing members 42, 42.
A worm wheel 44 that meshes with the worm 41 of the horizontal shaft 40 is formed on the horizontal shaft 40, and the pinion 31 that meshes with the semicircular gear 32 is fixed to the lower part of the horizontal shaft 40.

Therefore, when the swing motor 30 is driven, the horizontal shaft 40, the worm 41, the worm wheel 44,
The pinion 31 is rotated via the vertical shaft 43, and the pinion 31 makes a planetary rotation movement while meshing with the semicircular gear 32, so that the rocking table 29 is rotated about the rocking shaft 28 with respect to the rolling roll 11. It begins to swing back and forth in the horizontal direction.

As shown in detail in FIG. 9, bearing members 47, 4 are attached to the sliding sleeve 46 at the front of the head 36.
The shaft portion 35a of the chuck 35 is supported through the shaft portion 7, and at the rear of the head 36, a bearing member 48,
..., 48 is provided, and the chuck 3 is provided in the hollow portion of the hollow rotating shaft 49.
The rear portions of the shaft portions 35a of No. 5 are fitted and connected by a serration portion 50.

The gear 51 attached to the hollow rotating shaft 49 and the gear 53 of the output shaft 52 of the cutter motor 37 are connected by a gear system 54 .

A screw shaft 57 supported by a bearing member 56 is provided on the top of the head 36 in parallel with the chuck 35 and the hollow rotating shaft 49, and a bevel gear 59 of the screw shaft 57 is provided on the top surface of the head 36. The bevel gear 62 of the handle shaft 61 of the hand-operated handle 60 is engaged with the bevel gear 62, and the female screw block 63, which is engaged with the screw shaft 57, is connected to the rear portion of the sliding sleeve 46.

Therefore, when the manual handle 60 is rotated, the screw shaft 57 is rotated through the handle shaft 61, the bevel gear 62, and the bevel gear 59, and the screw shaft 57 rotates the sliding sleeve 46 through the female thread block 63.
By moving the chuck 35 back and forth, the extended position of the end mill 34 can be adjusted.

Further, when the cutter motor 37 is driven, the gears 53, 51, the hollow rotating shaft 49, the serration section 5
An end mill 34 is rotated by a chuck 35 through the shaft 0.

Returning to FIGS. 1 and 2, the parallel movement table 21 is provided with an operation panel 65 for controlling each motor 18, 22, 27, 30, etc., and the operation panel 65 is a control (NC) device. 66.

The control device 66 includes, as shown in FIG.
The oscillating table 2 is set so that the end mill 34 oscillates around the center P of the caliber 9 in an angular range θ ₂ in which the rear part does not come into contact with the caliber shoulder 9a.
A rotary device A that controls the swing angle of the caliber 9 and a swing center of the end mill 34 are arranged parallel to the right angle moving table 26 so that the swing center of the end mill 34 moves along predetermined trajectories l and l' with respect to the center P of the caliber 9. A rotating device B controls the relative movement amount of the moving table 21, and the rotation angle R of the rolling roll 11 is controlled in synchronization with the amount of movement of the parallel moving table 21 and the orthogonal moving table 26, and the swing angle of the rocking table 29. (14th
A circuit device C is built in to control the circuit (see figure).

Next, the relationship between the oscillations θ ₁ to _{θ 3} of the end mill 34 and the movement trajectories l and l' will be explained.

As shown in FIG. 10, the end mill 34 swings around the center P of the caliber 9.
When the end mill 34 is oscillated with the radius r set to cut into the inner circumferential surface of the caliber to a predetermined depth, in the angle range (oscillation machining range) θ ₂ in which the rear part of the end mill 34 does not contact the caliber shoulder 9a, Node grooves 33 can be formed in the caliber bottom 9b.

However, if the end mill 34 is further swung within the angle range (movement angle range) θ ₁ or θ ₃ in this state, the rear part of the end mill 34 will move toward the caliber shoulder 9a.
Since the caliber shoulder 9a will come into contact with the
It is not possible to machine the knot grooves 33.

Therefore, the maximum angle position of the center of the cutting edge in the angle range θ ₂ of the end mill 34 is set as the machining mode change point b(c), and with the end mill 34 at this maximum angle, the center of the cutting edge is the machining mode change point b(c). When the swing center of the end mill 34 is moved along a predetermined trajectory l (l') so as to reach the machining start (end) point a (d) from c) to the machining start (end) point a (d) (see the two-dot chain line), the caliber shoulder 9a,
Nodal grooves 33 can be formed in 9a.

The end mill 34 includes each of the moving tables 21, 26,
It is actually controlled as follows using the rocking table 29, the control device 66, etc.

In FIG. 11a, the parallel movement table 21 is moved to the right, the right-angle movement table 26 is retreated, and the swing table 29 is swung to the right, so that the center of swing of the end mill 34 is at point _P1 (preparation position). .

In Fig. 11b, move the right angle moving table 26 forward.
X ₁ to move the swing center of the end mill 34 to point P ₂ (starting position).

At this position, the center of the cutting edge of the end mill 34 coincides with the machining start point a.

In Fig. 11c, while moving the right angle moving table 26 further forward by _X2 , the parallel moving table 21 is moved to the left by Z/2.
The center of oscillation of the end mill 34 is set at the locus l.
When moving in an arc from point P ₂ to the caliber center P,
The center of the cutting edge of the end mill 34 moves within a moving machining range θ ₁ from the machining start point a to the machining mode change point b, and a knot groove 33 is machined in the right caliber shoulder 9a.

In FIGS. 11 d to 11 e, the rocking table 29
When the end mill 34 is swung to the left and the end mill 34 is swung around the caliber center P as the fulcrum, the center of the cutting edge of the end mill 34 is in the swiveling machining range θ ₂ from the machining mode change point b to the machining mode change point c. move and
Node grooves 33 are machined in the caliber bottom 9b.

In Fig. 11 f, move the right angle moving table 26 backward.
When the parallel movement table 21 is moved to the left by Z/2 while moving X ₂ , and the swing center of the end mill 34 is moved from the caliber center P to the P ₃ point (end position) along the trajectory l', the center of the cutting edge of the end mill 34 is moved within a moving machining range θ ₃ from the machining mode change point c to the machining end change point d, and a knot groove 33 is machined in the left caliber shoulder portion 9a.

In Fig. 11g, move the right-angle moving platform 26 backward.
X ₁ to move the swing center of the end mill 34 to point P ₄ (retreat position).

Thereafter, the parallel moving table 21 is moved to the right (Z), the swing table 29 is moved to the right, and the center of swing of the end mill 34 is returned to point _P1 (preparation position), resulting in the state shown in FIG. 11a.

Figures 11a to 11b show parallel knot grooves 33(A)
This shows the procedure for machining threaded joint groove 33.
(B), the corrugated knot grooves 33(C), 33(D), etc. are processed by rotating the rolling rolls 11 synchronously based on the processing procedure for the parallel knot grooves 33(A). The details will be explained later.

To set the extension amount (cutting amount) of the end mill 34, as shown in Fig. 12a, set the caliber center P.
Attach the reference setting gauge 71 set to align the cutting edge of the end mill 34 with the caliber center P, and then
As shown in FIG. 12c, when the end mill 34 is advanced to the caliber radius r (see FIG. 10), the swing center of the end mill 34 coincides with the caliber center P.

Hereinafter, processing procedures for various knot grooves, grooves, and knots 33(A) to 33(H) will be explained.

(1) Processing procedure for parallel joint groove 33(A) As shown in Figure 13, in the case of parallel joint groove 33(A), follow the steps in Figures 11a to 11g to cut the end mill 34. The center of oscillation is from _P1 point.
Move to point P ₂ , move from point P ₂ to the caliber center P along the trajectory l, and create a nodal groove in the caliber shoulder (right) 9a in the moving machining range θ ₁ from the machining start point a to the machining mode change point b. Then, the end mill 34 is oscillated around the caliber center P as the oscillation center to machine a knot groove in the caliber bottom 9b in the oscillating machining range θ ₂ from the machining mode change point b to the machining mode change point c. Then, move the oscillation center of the end mill 34 along the trajectory l' to point P ₃ , and move it to the caliber shoulder (left) 9a in the machining range θ ₃ from the machining mode change point c to the machining end point d. Machining the knot grooves.

Then, while moving the swing center of the end mill 34 from the _P4 point to the _P1 point, the rolling roll 11
is rotated by one pitch of the parallel knot groove 33(A), and the above procedure is repeated.

(2) Processing procedure for threaded nodal groove 33(B) As shown in Fig. 14, in the case of threaded nodal groove 33(B) having a predetermined inclination angle θa, as shown in Fig. 11a
- _Almost in the same way as the procedure _shown in _FIG . Rotation amount R ₁
Rotate it to machine a nodal groove that rises to the left on the caliber shoulder (right) 9a in the moving machining range θ ₁ from the machining start point a to the machining mode change point b, and then,
The end mill 34 is oscillated about the caliber center P as the fulcrum, and at the same time the rolling roll 11 is rotated by a rotation amount R ₂ to change the machining mode to point b.
Oscillation machining range θ ₂ from to machining mode change point c
Then, a left-sloping nodal groove is machined in the caliber bottom 9b, and the swing center of the end mill 34 is moved along the trajectory l' to P ₃ , and at the same time, the rolling roll 11 is rotated by the rotation amount R ₃ , and the machining is performed. A nodal groove upward to the left is machined in the caliber shoulder (left) 9a in the moving machining range θ ₃ from the mode change point c to the machining mode change point d.

Then, while moving the swing center of the end mill 34 from point P ₄ to point P ₁ , the rolling roll 11 is rotated by one pitch of the threaded nodal groove 33 (B), and the above procedure is repeated.

(3) Machining procedure for corrugated (V-shaped) knotted groove 33(C) In the case of V-shaped knotted groove 33(C) as shown in Figure 15a, machining is performed twice.

(a) First machining process In almost the same way as the steps shown in Figures 11a to 11g, move the swing center of the end mill 34 from point _P1 to point _P2 , and move the caliber from point _P2 along the trajectory l. At the same time as moving to the center P, the rolling roll 11 is rotated by a rotation amount R ₁ , and a left-sloping position is placed on the caliber shoulder (right) 9a in the moving machining range θ ₁ from the machining start point a to the machining mode change point b. Machining the knot groove, then using end mill 3
4 is oscillated counterclockwise around the caliber center P as a fulcrum, and at the same time, the rolling roll 11 is rotated by a rotation amount R ₂ to obtain an oscillating machining range from machining mode change point b to machining mode change point c. Machining a nodal groove upward to the left on the caliber bottom 9b at θ ₂ , and moving the swing center of the end mill 34 to point P ₃ along the locus l', at the same time,
Rotate the rolling roll 11 with a rotation amount R ₃ ,
A nodal groove upward to the left is machined in the caliber shoulder (left) 9a in the moving machining range θ ₃ from the machining mode change point c to the machining end point d.

Next, in the reverse procedure to the above, the swing center of the end mill 34 is moved from point _P3 to the caliber center P along the trajectory l', and at the same time, the rolling roll 11 is rotated by the rotation amount _R1 ', and the machining is completed. Move from point d to machining mode change point c' and machine a right-sloping nodal groove in the caliber shoulder (left) 9a in the machining range θ ₃ , then turn the end mill 34,
At the same time, the rolling roll 11 is rotated clockwise using the caliber center P as a rocking fulcrum.
R ₂ ' to machine a right-sloping nodal groove in the caliber bottom 9b in the oscillating machining range θ ₂ from the machining mode change point c' to the machining mode change point b', and then is moved along the trajectory l to point P ₂ , and at the same time the rolling roll 11 is rotated by rotation amount R ₃ ' to change the processing mode.
Machining a nodal groove upward to the right on the caliber shoulder (right) 9a within the moving machining range θ ₁ from b' to the machining start point a.

By repeating the above procedure, a V-shaped first groove is formed in the entire caliber 9.

(b) Second machining process After the first machining process, move the swing center of the end mill 34 to the caliber center P,
The oscillation of the end mill 34 is set within the oscillation processing range θ ₂ , and processing mode change points e, f, and g are set within the oscillation processing range θ ₂ .

Then, the center of the cutting edge of the end mill 34 is set, for example, at the machining mode change point e in the first nodal groove, and the end mill 34 is swung counterclockwise about the caliber center P as a fulcrum, and at the same time, the rolling roll 11 is rotated by a rotation amount R ₄ , and is rapidly traversed within the first joint groove in the oscillating machining range θ ₄ from the machining mode change point e to the machining mode change point f, and then the center of the cutting edge of the end mill 34 changes the machining mode. When the point f is reached, as shown in FIG. 15c, the machining mode change point f,
caliber bottom 9b in the swing machining range θ ₅ between f′
The end mill 34 is swung counterclockwise about the caliber center P as a fulcrum, and at the same time, the rolling roll 11 is rotated at a rotation amount R ₅ so that an arc-shaped knot groove is machined. At g, the end mill 34 is swung clockwise about the caliber center P as a fulcrum, and at the same time, the rolling roll 11 is rotated by a rotation amount R ₅ '.

Next, the end mill 34 is swung clockwise about the caliber center P as a fulcrum, and at the same time the rolling roll 11 is rotated by a rotation amount R ₄ ′ to change from the machining mode change point f′ to the machining mode change point e. Rapidly traverse inside the first knot groove in the swing machining range θ ₄ up to '.

By repeating the above procedure, an arc-shaped second knot groove is machined inside the V-shaped first knot groove formed in the first processing step.

When machining the second knot groove, a triangular uncut portion (see hatching) is created between the folded part of the first knot groove and the arc portion of the second knot groove, as shown in Fig. 15b. Therefore, when the center of the cutting edge of the end mill 34 reaches the processing mode change point g, the rotation of the rolling roll 11 is stopped, and the end mill 34 is rotated counterclockwise around the caliber center P as a swinging fulcrum.
Further oscillate to g′ to cut out the uncut portion.

After that, the end mill 34 is rotated clockwise around the caliber center P as a swinging point to the machining change point g.
to continue the above-mentioned machining process.

(4) Machining procedure for corrugated (U-shaped) knotted groove 33(D) In the case of U-shaped knotted groove 33(D) as shown in Fig. 16, machining is performed twice.

(a) First machining process Almost in the same way as the procedure shown in Figures 11a to 11g, the swing center of the end mill 34 is moved to the caliber center P, and the end mill 34 is moved within the machining range θ ₁ , θ ₃ A machining mode change point g is set at .

Then, the center of the cutting edge of the end mill 34 is set, for example, to the machining mode change point b, and the end mill 34 is swung counterclockwise about the caliber center P as a fulcrum, and at the same time, the rolling roll 11 is rotated by a rotation amount R ₆ . Rotate to machine a nodal groove upward to the left in the caliber bottom 9b in the oscillating machining range θ ₂ from the machining mode change point b to the machining mode change point c, and then the center of the cutting edge of the end mill 34 reaches the machining mode change point f When reaching the mode change point c, as in the case of Fig. 15c,
The end mill 34 is rotated with the center of oscillation along the trajectory l' P ₃ so that an arc-shaped nodal groove is machined on the caliber shoulder (left) 9a in the oscillating machining range θ ₅ between c'.
At the same time, the rolling roll 11 is rotated by the rotation amount R ₇ , and at the machining mode change point g, the swing center of the end mill 34 is moved along the trajectory l' to the caliber center P, and at the same time, the rolling roll 11 is moved to the front of the point. 11 by a rotation amount R ₇ ' to machine an arc-shaped knot groove in the shoulder (left) 9a of the caliber, and further swing the end mill 34 clockwise around the center P of the caliber as a swing fulcrum. At the same time, the rolling roll 11 is rotated by
Rotate at _R6 ' to machine a rightward upward nodal groove in the caliber bottom 9b in the oscillating machining range _θ2 from the machining mode change point c' to the machining mode change point b'.

By repeating the above procedure, a U-shaped first groove is formed in the entire caliber 9.

(b) Second machining process After the first machining process is completed, the swing center of the end mill 34 is moved from point P ₂ to the caliber center P along the trajectory l, and at the same time, the rolling roll 1
1 by rotation amount R ₈ , and move to the machining start point a.
Move from to the machining mode change point b Machining a nodal groove upward to the left in the caliber shoulder (right) 9a in the machining range θ ₁ , then swing the end mill 34 counterclockwise with the caliber center P as the fulcrum. At the same time, the rotation amount of the rolling roll 11 is increased.
Rotate with R ₉ , rapidly move within the first joint groove in the swing machining range θ ₆ from machining mode change point b to machining mode change point c, and then turn the end mill 3
When the center of the cutting edge of No. 4 reaches the machining mode change point c, the swing center of the end mill 34 is moved from the caliber center P to point P ₃ along the trajectory l', and at the same time, the rolling roll 11 is rotated by the rotation amount R ₁₀ . Then, in the moving machining range θ ₃ from the machining mode change point c to the machining end point d, machine a nodal groove upward to the left on the caliber shoulder (left) 9a, and then move from the machining mode change point d to the machining mode change point
Stop the swinging of the end mill 34 until d′,
The rolling roll 11 is rotated by a rotation amount R ₁₁ to form a circumferential nodal groove in the caliber shoulder (left) 9a.

When the center of the cutting edge of the end mill 34 reaches the processing mode change point d', the swing center of the end mill 34 is moved along the trajectory l' from point _P3 to the caliber center P, and at the same time the rolling roll 11 is rotated by the rotation amount _R10. ’ to rotate and change the machining mode.
Machining a nodal groove upward to the right on the caliber shoulder (left) 9a in the moving machining range θ ₃ from d' to the machining mode change point c', then turn the end mill 34,
At the same time, the rolling roll 11 is rotated clockwise using the caliber center P as a rocking fulcrum.
Rotate at _R9 ' and rapidly move within the first nodal groove in the oscillating machining range _θ6 from the machining mode change point c' to the machining mode change point b'.

By machining the second knot groove, an arcuate uncut portion is generated outside the arc portion of the first knot groove in the first machining step, so the uncut portion is cut out.

(5) Processing procedure for striped steel 33(E) of striped steel plate rolling roll As shown in Fig. 17, process striped steel 33(E) as shown in Fig. 18 on the outer periphery of the rolling roll 11. In this step, the parallel moving table 21 is moved left and right to align the center of the cutting edge of the end mill 34 with the processing start point a, and the right angle moving table 26 is advanced to cut the outer periphery of the rolling roll 11 to a predetermined depth with the end mill 34. While swinging the rocking table 29 to the right, the rolling roll 11 is rotated by a rotation amount R ₁ to perform cutting from the machining start point a to the machining end point b, and at the machining end point b, the orthogonal moving table 26 is retreated.

Next, while rapidly moving the translation table 21 to the left, the rolling roll 11 is rotated by a rotation amount R ₂ .
The center of the cutting edge of the end mill 34 is aligned with the machining start point c, and the right angle moving table 26 is advanced to cut the outer periphery of the rolling roll 11 to a predetermined depth with the end mill 34, and rolling is performed while the rocking table 29 is swung to the left. Rotate the roll 11 with a rotation amount R ₁ ,
Cutting is performed from the machining start point c to the machining end point d, and the right-angle moving table 26 is retreated at the machining end point d.

This completes one step of processing, and this process is repeated so that the striped pattern grooves 33 (E) are formed in equal parts on the outer periphery of the rolling roll 11.

When the roll 11 rotates once, the parallel moving table 21 is rapidly moved by a distance L and the above steps are repeated to form striped grooves 33(E) on the entire outer periphery of the roll 11.

(6) Procedure for machining the mark groove 33(F) of the rolling roll As shown in FIG. 19, for example, to machining the mark groove 33(F) of "A" on the outer periphery of the rolling roll 11 as shown in FIG. The parallel movement table 21 is moved left and right to align the center of the cutting edge of the end mill 34 with the first machining start point a, and then the right angle movement table 26 is moved horizontally.
is advanced and the end mill 34 cuts the outer periphery of the rolling roll 11 to a predetermined depth, and while swinging the rocking table 29 to the right, the rolling roll 11 is rotated by a rotation amount R1.
Rotate it forward and cut from the first machining start point a to the mode change point b.

Then, the parallel moving table 21 is moved to the right to perform cutting from the mode change point b to the mode change point c, and then, the rolling roll is rotated backward by the rotation amount R ₁ while the rocking table 29 is rocked to the right. , cutting is performed from the mode change point c to the first machining end point d, and the right-angle moving table 26 is retreated at the first machining end point d.

Next, the parallel movement table 21 is moved to the left to rotate the rolling roll 11 by a rotation amount R ₂ , the center of the cutting edge of the end mill 34 is aligned with the second machining start point e, and the right angle movement table 26 is advanced to rotate the roll 11 by the rotation amount R 2. 34 cuts the outer periphery of the rolling roll 11 to a predetermined depth, moves the parallel movement table 21 to the right, cuts from the second machining start point e to the second machining end point f, and moves at a right angle at the second machining end point f. The stand 26 is moved back.

As described above, mark grooves 33 (F) are formed on the outer periphery of the rolling roll 11.

Note that in addition to characters (English characters, Japanese characters, etc.), symbols, figures, etc. can be used as the mark.

FIGS. 21 and 22 show the case where mark grooves 33 (F) are formed in the caliber 9 of the rolling roll 11, and this can also be done in the same manner as described above.

(7) Procedure for machining the knurling (groove) 33 (G) of the rolling roll As shown in FIG. The center of the cutting edge of the end mill 34 is aligned with the machining start point a by moving the end mill 34 left and right, and the right angle moving table 26 is advanced to cut one side of the caliber 9 of the rolling roll 11 to a predetermined depth with the end mill 34. While moving forward, the parallel movement table 21 is moved to the right to perform cutting from the machining start point a to the machining end point b, and at the machining end point b, the orthogonal movement table 26 is retreated.

Next, the parallel moving table 21 is rapidly moved to the right to align the center of the cutting edge of the end mill 34 with the machining start point c, and the right angle moving table 26 is advanced to move the caliber 9 of the rolling roll 11 by the end mill 34.
Cut the other side to a predetermined depth, move the parallel movement table 21 to the right while moving the right angle movement table 26 backward,
Cutting is performed from the machining start point c to the machining end point d, and the right-angle moving table 26 is retreated at the machining end point d.

Then, the rolling roll 11 is rotated by a rotation amount R ₁ to align the center of the cutting edge of the end mill 34 with the machining start point e, and thereafter, similarly, point f, point g, h
By repeating the process from point, i point, etc., knurling (groove) is created throughout the caliber 9 of the rolling roll 11.
33(G) is processed.

(8) Procedure for processing knot 33 (H) of deformed steel bar rolling roll As shown in Fig. 24, deformed steel bar B is customarily processed with knot Ba on its outer periphery. In the clause Ba
However, the second
As shown in Figure 5, there are nodal grooves on the outer periphery of the irregularly shaped bar groove B.
There was a request to process Bb, and for this reason,
Caliber 9 of rolling roll 11 needs to be machined with knots 33H.

As shown in FIGS. 26 and 27, in order to process the knot 33(H) on the caliber 9 of the rolling roll 11, the parallel movement table 21 is moved left and right to bring the center of the blade edge of the end mill 34 to the first processing start point. Then, the orthogonal moving table 26 is moved forward, and the rolling rolls 11 are rotated synchronously while moving the parallel moving table 21 to the right to cut to the mode change point P ₁ , and from the mode change point P ₁ to the point b. Cutting is performed by rotating the rolling roll 11 synchronously while moving the rocking table 29 to the right, and from point b to point c, cutting is performed in an arc shape by rotating the rolling roll 11 synchronously while moving the rocking table 29 from side to side. From the mode change point P ₂ to the mode change point P 2 , the rolling roll 11 is synchronously rotated and cut while moving the rocking table 29 to the left, and from the mode change point P ₂ to the first machining end point d, the orthogonal moving table 26 is retreated, While moving the translation table 21 to the left, the rolling rolls 11 are synchronously rotated and cut.

Then, the rolling roll 11 is reversely rotated to move the center of the cutting edge of the end mill 34 from the first machining end point d to the second machining start point e.

Next, from the second machining start point e to the second machining end point g, between the second machining start point e and the mode change point P ₁ , and between the mode change point P ₂ and the second machining end point g. , by the movement of the orthogonal moving table 26 and the parallel moving table 21 as described above, and between the mode change point P ₁ , the point f, and the mode change point P ₂ , by the rocking of the rocking table 29 as described above, respectively. Cutting is performed by rotating the rolling rolls 11 synchronously.

Hereafter, in the same way, point h → point i → point j → point k →
Perform cutting at point l.

From point l to the first machining start point m of the next cutting area B, the rolling rolls 11 are rotated synchronously and moved while the translation table 21 is moved.

The cutting process for the cutting area B is performed symmetrically with the cutting process for the previous cutting area A.

This completes one step of processing, and by repeating this so that the caliber 9 of the roll 11 is processed in equal parts, the knot 33 (H) is processed on the entire caliber 9 of the roll 11.

In the groove machining device described above, a decon machining head 70 as shown in FIG. 28 was positioned on a parallel movement table 21 supported by a base 12 with a dowel pin 71 and fixed with a fixing bolt 72. , the decon processing head 70 is removed and the 29th
As shown in the figure, the threaded head 73 can be replaced and fixed in the same way, and the third
As shown in FIG. 0, the outer diameter of the rolling roll 11 and the caliber processing head 74 can be replaced and fixed in the same manner.

[Brief explanation of drawings]

FIG. 1 is an overall plan view of a groove machining device according to the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a left side view of FIG. 2, and FIG. 4 is a rear view of FIG. 2. 5 is a plan view of the main part of FIG. 2, FIGS. 6a and 6b are front views showing examples of knot grooves, FIG. 7 is a plan sectional view of the rocking table, and FIG. 9 is a front sectional view of the head, FIG. 10 is a plan view showing the relationship between the swinging of the end mill and the locus of movement, and FIGS. 11a to 11g are the swinging of the end mill and FIGS. 12a to 12c are side views showing how to set the extension amount of the end mill;
Figure 3 is a front view of a parallel joint groove, Figure 14 is a front view of a threaded joint groove, Figure 15a is a front view of a V-shaped joint groove, and Figure 15b shows how to remove the uncut portion. Front view, Figure 15c is a front view showing how to process the circular arc part, Figure 16 is a front view of the U-shaped knot groove, Figure 17 is a perspective view of the striped plate rolling roll, and Figure 18 is the striped plate. FIG. 19 is a front view showing the pattern groove processing procedure; FIG. 19 is a perspective view of a rolling roll with mark grooves formed on the outer circumference;
The figure is a front view showing the procedure for machining mark grooves, Figure 21 is a sectional view of a rolling roll with mark grooves processed into caliber, Figure 22 is a front view of mark grooves, and Figure 23 is a rolling roll with knurling processed into caliber. A front view of a roll, FIG. 24 is a front view of a deformed steel bar with knots processed, FIG. 25 is a front view of a deformed steel bar with knot grooves processed, and FIG. 26 is a cross-sectional view showing the knot processing procedure for a deformed steel bar rolling roll. , Fig. 27 is a front view of Fig. 26, Fig. 28 is a side view of the decon processing head, and Fig. 29 is a front view of Fig. 26.
The figure is a side view of the head for screw connection processing, Fig. 30 is a side view of the head for outer diameter and caliber processing, and Fig. 31 is a side view of the head for processing the outer diameter and caliber.
Figure a is a perspective view of a conventional knot groove processing device, Figure 31b
is a side view of Fig. 31a, and Fig. 31c is a side view of Fig. 31a.
FIG. 32a is a plan view showing the rotation locus of the fly tool, and FIG. 32b is a plan sectional view of the caliber having a tentering space. 9...Caliber, 11...Rolling roll, 12...
... Base, 21 ... Parallel movement table, 26 ... Right angle movement table, 29 ... Rocking table, 33 (A, B, C, D) ...
...Node groove, 33 (E, F, G) ... Groove, 33 (H) ...
Node, 34... End mill, 66... Control device.

Claims (1)

[Scope of Claims] 1. A method of machining grooves in the caliber of a rolling roll using an end mill with a chamfered part formed on the cutting edge, the end mill being used within an angular range in which the rear part of the end mill does not come into contact with one shoulder of the caliber. With the end mill tilted, place the end of the end mill against the other shoulder of the caliber.
While the end mill is oscillated around the oscillation center toward the bottom of the caliber, the oscillation center of the end mill is moved along a predetermined trajectory relative to the caliber center to machine a groove in the caliber shoulder, and then, A method for machining grooves in a rolling roll, characterized in that a groove is machined on the bottom of a caliber while an end mill is oscillated around the center of the caliber. 2. A method of machining grooves in the caliber of a rolling roll using an end mill with a chamfered part formed on the cutting edge, the end mill being tilted within an angle range that does not contact one shoulder of the rear caliber. Place the tip of the end mill against the other shoulder of the caliber, and while swinging the end mill toward the bottom of the caliber around the center of swing, move the center of swing of the end mill along a predetermined trajectory relative to the center of the caliber. The end mill is moved to machine a groove on the shoulder of the caliber, and then, while the end mill is oscillating around the center of the caliber, a groove is machined on the bottom of the caliber. A method for machining grooves on a rolling roll, characterized in that the roll is rotated around an axis. 3. A device for machining grooves on a roll using an end mill, which includes a base when the roll is rotatably supported, and a parallel movement when the roll is supported by the base and can be moved in parallel to the roll. a rectangular moving table supported by the parallel moving table and movable in a direction perpendicular to the rolling roll; and a rocking table supported by the orthogonal moving table and movable in a horizontal direction with respect to the rolling roll. a head that is supported by the rocking table and rotatably supports the end mill; a device that controls the swing angle of the rocking table; and a device that controls the relative movement amount of the orthogonal moving table and the parallel moving table. A rolling roll grooving device characterized by comprising: 4. A device for machining grooves on a rolling roll using an end mill, comprising: a base that rotatably supports the rolling roll; and a parallel movement supported by the base and movable in a direction parallel to the rolling roll. a rectangular moving table supported by the parallel moving table and movable in a direction perpendicular to the rolling roll; and a rocking table supported by the orthogonal moving table and movable in a horizontal direction with respect to the rolling roll. a head supported by the rocking table and rotatably supported by the end mill; a device for controlling the rocking angle of the rocking table; and a device for controlling the relative movement amount of the orthogonal moving table and the parallel moving table. and a device for controlling the rotation angle of the roll in synchronization with the movement amount of the parallel movement table and the orthogonal movement table and the rocking angle of the rocking table. Device.