JPH0243657Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a roller burnishing device.

Conventional technology When performing burnishing by pressing both shoulder surfaces of a rotating workpiece with a pair of pressure rollers, the longitudinal position of the workpiece must be accurately determined before burnishing in order to evenly apply the left and right rollers to the shoulder surfaces of the workpiece. It is necessary to perform burnishing after indexing.

Therefore, it is necessary to use a dedicated positioning device or to perform longitudinal positioning of the workpiece before burnishing using the processing roller itself that performs roller burnishing.

Problems that the invention aims to solve As a result, the cycle time becomes long, and even if the longitudinal positioning of the workpiece is performed accurately, if the surface roughness of both shoulder surfaces of the workpiece is not equal, the amount of burnishing on the left and right shoulder surfaces will increase. As a result, the pressing force on the left and right rollers is not equal, and unless the pressing force is considerably high, the surface roughness of the left and right shoulder surfaces cannot be ensured, resulting in a shortened roller life.

The present invention was developed in view of the above-mentioned circumstances, and its purpose is to always apply uniform application without having to accurately position the rollers 44, 45 and the shoulder surfaces B, B' before burnishing. Pressure can be applied to the left and right rollers 44, 45, and even if there is a difference in the surface roughness of the shoulder surfaces B and B', and even if there is a difference in the amount of burnishing, burnishing can be performed with an appropriate pressure and the life of the rollers can be extended. It is an object of the present invention to provide a roller burnishing device which can be made longer and which also makes it possible to shorten the cycle time without having to position a workpiece A with a burnishing roller.

Means and operation for solving the problems The present invention provides a base member 8' of the cross slide 8.
A sliding groove 10 is formed along the longitudinal direction of the work A, and a slide body 19 is provided in the sliding groove 10 so as to be slidable in the longitudinal direction of the work A. A slide body 19 is provided on the side of the base member 8'. Sliding groove part 1 in 19
A floating amount adjustment mechanism 20 is provided to provide some play in the longitudinal direction of the workpiece A between the members 23 and 24 at both ends of the roller burnishing head 9. is provided with a holder body 36 that rotates by the operation of the rotary actuator 29, and the holder body 36
An insertion protrusion 37 is provided to be inserted between the left and right shoulder surfaces B and B' of the workpiece A, and the insertion protrusion 37 has a
Due to the rotation of the holder body 36, the shoulder surface B,
The configuration includes rollers 44 and 45 that press against B', and the insertion convex portion 37 is connected to the shoulder surface B,
The holder body 36 is rotated by the operation of the rotary actuator 29, and the rollers 44,
45 are pressed against the shoulder surfaces B and B', and the rotation of the workpiece A causes the shoulder surfaces B and B' to be brought into contact with the rollers 44 and 45.
45 for burnishing.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a main body of the device, and the main body 1 of the device is provided with a tail stock 2, a center 3, a temporary positioning pad 4, and a positioning roller 5. The main body 1 of the device is also provided with a turning slide 6 that can move up and down. This turning slide 6 is provided with a turning tool. Further, the main body 1 of the apparatus is provided with a cross slide 8 which can be moved vertically and horizontally, and this cross slide 8 is provided with a roller vanishing head 9.

That is, the base member 8' provided on the cross slide 8 has a sliding groove 10 along the lateral (left and right) direction.
is formed. This sliding groove portion 10 includes upper and lower guide members 11, 12 and a surface portion 13 of the base member 8'.
The sliding surfaces 14 and 15 of the upper and lower guide members 11 and 12 and the surface portion 13 form an acute angle. Bearings 16 and 17 such as linear bearings are provided on the sliding surfaces 14 and 15, and bearings 18 such as linear bearings are provided on the upper and lower portions of the surface portion 13.

A slide body 19 is fixed to the back surface of the roller burnishing head 9, and the slide body 19 is inserted into the sliding groove 10, and bearings 16, 17, and 18 are in contact with the slide body 19.

A slide body 19 is provided on the side of the base member 8'.
A floating amount adjustment mechanism 20 is provided to adjust the floating amount in the lateral direction.

This floating amount adjustment mechanism 20 consists of floating adjustment blocks 21, 21' and adjustment bolts 2.
2, 22'.

This floating amount adjustment mechanism 20 allows the sliding body 19 to be adjusted to the members 23 and 2 at both ends of the sliding groove 10.
4 is given some play in the lateral direction, making it float.

The roller burnishing head 9 includes a head body 25, and a shaft support portion 26 of the head body 25.
A spindle 28 is provided through a bearing 27, and a rotary actuator 29 is attached to the upper end of the head body 25, and an output shaft 30 of the rotary actuator 29 is connected to the spindle 2.
It is connected to 8.

At the bottom of the spindle 28, there are notches 31, 3.
2 is formed, and adjustable stopper bolts 33, 34 are screwed into the head body 25, and the inner ends of the stopper bolts 33, 34 are inserted into the notches 31, 32, and the spindle 28
is designed to be able to rotate until the interference portion 35 formed by the notches 31 and 32 comes into contact with either of the stopper bolts 33 or 34.

A holder body 36 is attached to the lower end of the spindle 28 with bolts 37'.
An insertion convex portion 37 is formed on the lower surface of 6. Further, shaft holes 38 and 39 are provided from the upper surface of the holder body 36 to the lower surface of the insertion convex portion 37.
8 and 39, shaft bodies 40 and 41 are inserted through radial direction bearings 40' and 41', and the shaft body 4
A shoulder portion 42 is formed at the lower end of 0.41,
The upper end portions of the shaft bodies 40 and 41 are threaded portions 43 . Rollers 44, 45 are provided on the lower end sides of the shafts 40, 41, and a recess 46 is formed in the lower end surface of the rollers 44, 45, into which the shoulder 42 is fitted. and rollers 44, 45
A bearing 47 in the thrust direction is interposed between the holder body 36 and the holder body 36 .

In addition, nuts 4 are attached to the threaded portions 43 of the shaft bodies 40 and 41.
8 are screwed together, and the nut 48 and the holder body 3
A bearing 49 in the thrust direction is interposed between the bearing 6 and the bearing 6.

Spiral oil grooves 51 and 52 are formed on the circumferential surfaces of the rollers 44 and 45.

Further, an oil hole 53 is provided on the outer circumference of the lower end of the spindle 28.
is open, and an oil supply pipe 54 is connected to the opening of the oil hole 53. The oil hole 53 is connected to the holder body 36.
It communicates with an oil hole 56 formed in. This oil hole 5
6 opens at the intersection 55 of the rollers 44 and 45.

Next, the operation will be explained.

When performing roller burnishing after finishing turning, the turning slide 6 descends after positioning and clamping the workpiece A, and the turning tool 7 finishes finishing both shoulder surfaces B and B' of the workpiece A. After the turning slide 6 rises, The roller burnishing device F is indexed by the cross slide 8.

The insertion convex portion 3 is provided with rollers 44 and 45.
7 is inserted between both shoulder surfaces B and B', the spindle 28 is rotated by the drive of the rotary actuator 29, the holder body 36 is rotated, and the rollers 44 and 45 are brought into contact with the shoulder surfaces B and B'. .

At this time, even if there is an indexing error or a difference in the amount of burnishing between the left and right shoulder surfaces B and B', the burnishing head 9 is allowed to float in the longitudinal direction of the workpiece, so the roller 4
The pressurizing forces 4 and 45 are always kept constant. Then, the workpiece A is rotated and the left and right shoulder surfaces B and B' are burnished by the rollers 44 and 45.

Effects of the invention Since the invention is as described above, the insertion protrusion 37
is inserted between the shoulder surfaces B and B', and the holder body 36 is rotated by the operation of the rotary actuator 29, and the rollers 44 and 45 are inserted between the shoulder surfaces B and B'.
When the shoulder surfaces B and B' are burnished by the rollers 44 and 45 by the rotation of the workpiece A in pressure contact with B', even if there is an indexing error or a difference in the amount of burnishing between the left and right shoulder surfaces B and B', the burnishing head is Since roller 9 is made to be floating in the longitudinal direction of the work, roller 4
4, 45 can be kept constant at all times.

That is, even if the rollers 44, 45 and the shoulder surfaces B, B' are not finely adjusted to have an accurate positional relationship before burnishing, if the shoulder surfaces B, B' have the same surface roughness, the holder body 36 will roller 4
Since the rollers 44 and 45 attempt to maintain a balanced position, that is, an intermediate position, where the contact pressure caused by rotational resistance at the contact portion between the shoulder surfaces B and B', the rollers 44 and 45 perform burnishing with equal pressure. will be done. Also, if there is a difference in surface roughness between shoulder surfaces B and B', roller 4
The contact pressure caused by the rotational resistance at the contact area between 4 and 45 and the shoulder surfaces B and B' is unbalanced,
The rollers 44 and 45 mainly burnish the surface with less rotational resistance, that is, the surface with higher surface roughness. Then, when the surface roughness becomes the same,
As described above, the holder main body 36 is held at the intermediate position, and the rollers 44 and 45 perform the burnishing process with uniform pressing force.

In this way, according to the present invention, even if the roller is not accurately positioned with respect to the workpiece before work, burnishing with different surface roughness is not performed on the machined surface with the same surface roughness, and the surface roughness can be improved. Since the burnishing process does not end with the relative roughness of machined surfaces having different degrees of roughness differing, the cycle time of the work can be greatly reduced from the standpoint of saving positioning time and minimizing the rational progress of the burnishing process itself. Improvement is expected.

[Brief explanation of the drawing]

FIG. 1 is a front view of a processing machine equipped with a roller burnishing device according to the present invention, FIG. 2 is a front view of an embodiment of the present invention, FIG. 3 is a longitudinal cross-sectional view of the same, and FIG. View from the direction of the figure, Figure 5 is Figure 2-
6 is an enlarged front view of an embodiment of the present invention, FIG. 7 is a partially sectional side view of the same, FIG. 8 is a vertical sectional view of the roller mechanism, and FIG. 9 is a diagram of FIG. 8. 10 is a side view of the holder body, FIG. 11 is a view from the XI direction in FIG. 10, FIG. 12 is a view from the XII direction in FIG. 10, and FIG. 13 is a sectional view along FIG. 12-, FIG. 14,
FIG. 15 is an explanatory diagram of the roller operation. 9 is a roller burnishing head, 36 is a holder body, 37 is an insertion projection, and 44 and 45 are rollers.

Claims (1)

[Claims for Utility Model Registration] The roller vanishing head 9 includes a holder body 3 that rotates by the operation of a rotary actuator 29.
6 is provided, and an insertion convex portion 37 is inserted into the holder body 36 between the left and right shoulder surfaces B and B' of the workpiece A.
A roller 44 is provided on the insertion convex portion 37 and presses against the shoulder surfaces B and B' by rotation of the holder main body 36.
45, a slide body 1 is attached to the roller burnishing head 9.
The base member 8' of the cross slide 8 is fixedly installed and moves vertically and horizontally by a drive mechanism.
A sliding groove 10 having members 23 and 24 is formed along the longitudinal direction of the workpiece A and at both ends thereof, and a slide body 19 is slidably disposed in the sliding groove 10, and the base member 8' Slide body 19 on the side of
A floating amount adjustment mechanism is provided for the base member 8', so that even after the holder main body 36 is indexed by the cross slide 8, the holder main body 36 is fixed to the workpiece A.
A roller burnishing device characterized in that it is configured so that it can be in a floating state with some play in the longitudinal direction.