JPH0616986B2 - Grinding wheel repair device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] [Industrial field of application] The present invention relates to a grinding wheel correction device provided in a grinding machine.

"Prior art" In a grinder that grinds using a grinding wheel, a single point diamond or a rotary diamond device is generally incorporated at the tip of the grindstone to correct, i. In the case of a multi-step or tapered object, the grinding wheel correction device incorporating a copying template of that shape is used.

As is well known, the grinding wheel correcting device is provided on, for example, a wheel head or a bed. A conventional example of such a grinding wheel correction device is shown in FIG. 4 of a longitudinal sectional view and FIG. 5 of a front view of FIG.
In the figure, a traverse base 34 serving as a guide parallel to the grindstone shaft 3 fixed on the bed 1, a traverse body 6 sliding on the traverse base 34, and a screw feed (not shown) provided between the traverse body 6 and the traverse base 34. The device constitutes a feeder. A cross slide 39 that slides on a guide surface on the upper surface of the traverse body 6 that is orthogonal to the grindstone shaft 3 has one end locked to the traverse body 6 and the other end locked to the cross slide 39. The stylus 18 fixed to the cross slide 39 is urged in the forward direction by the copy spring 22 that is fixed to the template 19 fixed to the traverse 34.
The position of the cross slide 39 is fixed by being pressed against.

The diamond bar 2 that slides in the cylindrical hole of the cross slide 39 in a direction orthogonal to the grindstone shaft 3 so as not to rotate.
A diamond notch handle 31 is attached to the diamond notch screw 32 screwed into the shaft 6 so that the diamond notch screw 32 is axially supported by a bearing 33 fixed to the rear end of the cross slide 39 so as not to move in the axial direction.
The diamond tool 25 is fixed to the end of the diamond bar 26.

[Problems to be Solved by the Invention] In FIG. 4, when the traverse body 6 is fed by a screw feeding device (not shown) for traverse, the traverse body 6 tries to swing in the cutting direction of the diamond tool 25, but the stylus 18, The copying apparatus including the template 19 and the copying spring 22 tries to move along the template 19. When the diamond cutting handle 31 is rotated, the diamond cutting screw 32 is rotated, the diamond bar 26 is moved forward, and the diamond tool 25 moves forward every time the grindstone 2 is corrected. Therefore, the amount of protrusion of the diamond bar 26 from the cross slide 39 changes, the supporting conditions change, and if the amount of protrusion increases, chatter vibration occurs in the diamond tool 25, and an accurate working surface of the grindstone cannot be formed. When such a grindstone correction load fluctuates, the contact pressure between the stylus 18 and the template 19 changes, and the swing of the traverse body 6 by the traverse screw feeder is not erased.
That is, the movement of the traverse body 6 in the traverse direction is affected by the accuracy of the guide surfaces of the traverse screw feed device and the traverse base 34. If the diamond bar 26 is made thick to increase its rigidity, the cross slide 39 also becomes large and the device becomes large. Diamond bar 2 when using a rotary diamond dresser
It is common to attach a rotary head to the tip of No. 6, and when shared with a single diamond, the size of the rotary head is set so that the single diamond is attached. Was becoming.

The present invention solves the above problems, ensures an accurate traverse by the copying device of the traverse body, makes it possible to perform a good grindstone correction always supported by the same rigidity, and is small even in the rotary diamond type dresser mounting. An object of the present invention is to provide a grinding whetstone repairing device that can be realized.

"Means for Solving the Problem" The present invention has a bed having a traverse guide surface parallel to the grindstone axis on the upper surface, and a cross guide surface in the radial direction of the grindstone guided on the traverse guide surface via a linear bearing. A traverse body, a traverse screw feed device provided on the bed for traversing the traverse body, a copying body guided to the cross guide surface through a linear bearing, and a copying body in the same direction as the copying body. A diamond cutting body for cutting, which is guided so as to be relatively movable back and forth, a screw feeding device for cutting, which is provided in the copying body and gives a cutting feed to the diamond cutting body, and the diamond cutting body. A whetstone correction tool provided, a template provided on the bed in parallel with the whetstone axis and having a contact surface on the opposite side to the whetstone, and on the lower surface of the copy body A stylus which is provided and contacts the template; and a spring member which is interposed between the traverse body and the copying body and biases the copying body toward the grindstone so that the template and the stylus are in constant contact. In other words, it is a whetstone correcting device that feeds in the axial direction of the grindstone while being regulated by the template by the traverse screw feed device and feeds in the cutting direction by the cutting screw feed device regardless of the template.

[Work] When the traverse body is fed by the traverse screw feeder, the copy body follows the template with the stylus provided on the lower surface of the copy body, and the copy body traverses regardless of the feed accuracy of the traverse screw feeder. The diamond cutting body, which is connected to the copy body via the screw feeder, traverses with the copy body. The feed in the cutting direction is performed by the screw feed device for cutting regardless of the template.

[Examples] Examples of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical cross-sectional view in the direction intersecting with the grindstone shaft, and FIG. 2 is a plan view of FIG.

As is well known, the grindstone correcting device is attached to a grindstone base or a machine base. However, the bed 1 of this example is applied to the machine base or the grindstone base, or as a base fixed to the machine base or the grindstone base. It can be converted. In this embodiment, as shown in FIGS. 1 and 2, a grinding wheel 2 having a generatrix on a grinding surface having a straight line parallel to the grinding wheel shaft 3, that is, a case where the outer circumference of a cylindrical grinding wheel 2 is corrected and ground by a correction tool is shown. There is. Two traverse guide rails 4 and 4 are fixed as a traverse guide surface in parallel with the grindstone shaft 3 of the grindstone 2 to the bed 1 that is integrated with the grinder frame or is attached to the grinder structure frame. Slide guides 5 and 5 are fixed as linear bearings that engage the sliders 4 and 4 near the four outer corners below the traverse body 6. A traverse screw 10 rotatably supported by the bed 1 is screwed into the traverse body 6 as a traverse screw feeder. As described above, the feeding device configured to feed the grindstone correcting tool along the working surface of the grindstone so as to traverse the working surface.

On the upper surface of the traverse body 6, two cross slide direction ball guide rails 7 and 8 which are orthogonal to the traverse guide rail 4 and are parallel to each other in a horizontal plane are fixed as cross guide surfaces. The inner ball slide guide 9 of the linear bearing that is individually engaged is fixed to the diamond notch body 12, and the ball slide guide 11 is fixed to the copy body 13.

As shown in FIG. 2, the diamond cutting body 12 and the copy body 1
Each of the 3's has an L shape, and when combined so as to be inserted into each other, has a substantially rectangular shape. One side of the L shape of the diamond cutting body 12 is overlapped along the ball guide rail 7, and is attached to the slide guide rail 7 via two ball slide guides 9 on the side close to the grindstone 2 fixed to the one side. The other side of the L shape which is engaged and overlaps with the ball guide rail 8 at right angles, and is attached to the ball guide rail 8 via one ball slide guide 9 closest to the grindstone 2 fixed to the side. Engaged. One side of the L shape of the copy body 13 overlaps along the ball guide rail 8, and the ball guide rail 8 is engaged with two ball slide guides 11 fixed to the one side, and the other side of the L shape is It overlaps the ball guide rail 7 at right angles and engages with the ball guide rail 7 via one ball slide guide 11 fixed to the side.

The ball guide rails 7 and 8 and the diamond notched body 12
Also, the relationship with the copy body 13 is such that three slide guides are engaged with each of the guide rails 7 and 8 and a diamond cutting body 12 carrying a grindstone correction tool (diamond tool 25 described later) is provided as one guide. Three slide guides that engage with the rail 7, three slide guides that engage with the two slide guides 9 and 9 and the other guide rail 8 from the side closer to the inner grindstone 2 of the three slide guides 9, 9 and 11. The slide body 9 is fixed to one slide guide 9 closest to the grindstone 2, and the copy body 13 is fixed to the remaining slide guide 11. The diamond notch body 12 and the copy body 13 are respectively formed. The shape is not limited to the L-shape, and any shape may be used as long as they can enter each other or can approach each other.

A ball screw 15 parallel to the ball guide rails 7 and 8 is screwed into a ball nut 14 fixed to the diamond cut body 12. The ball screw 15 is supported by a bearing 16 housed in the copy body 13 so as not to move in the axial direction, and is connected to an output shaft end of a pulse motor 17 fixed to the copy body 13 via a gear train. These constitute a cutting screw feeding device.

Stylus 1 that is fixed and hangs down at the rear of the copy body 13.
8 is provided, and the tip of the stylus 18 is at a position where it can be pressed against the template 19 fixed to the bed 1. A pipe 20 is fixed to the copy body 13 in parallel with the ball screw 15, and a nut 21 is fixed to the rear end of the pipe 20. One end of the copy spring 22, which is a tension spring, is locked to a pin 23 fixed to the traverse body 6, and the hole of the copy body 13 and the pipe 2 which are bored in line with the pipe 20.
The other end of the hanger 24 is inserted into the nut 21 and screwed into the nut 21.

A diamond bar 26 having a diamond tool 25 having diamond as a grindstone correcting tool fixed to the tip is fixed to the top end of the diamond cutting body 12.

When making a diamond cut, the pulse motor 17 is energized. The pulse motor 17 rotates the ball screw 15 by a predetermined amount. Since the copy body 13 is biased by the copy spring 22 so as to approach the traverse body 6 and can be moved on the ball guide rails 7 and 8 in the cross slide direction by the ball slide guide 11, the end of the stylus 18 is pressed against the template 19. is doing. Therefore, copy body 13
Is a fixed position at each point of the traverse body 6, the diamond cutting body 12 moves in the direction intersecting the grindstone shaft 3 with respect to the copying body 13, and the distance between the diamond cutting body 12 and the copying body 13 changes. However, the cut amount of the diamond tool 25 is given.

When the traverse screw 10 is rotated by a correction feeding device (not shown) when copying with the template 19, the traverse body 6 moves on the traverse guide rail 4 via the slide guide 5, so that the diamond notch body 12, The copy body 13 and other objects carried by them move in the same direction. Stylus 18 is template 1
Since it is pressed against 9, the copy body 13 is the template 1
It moves on the ball guide rails 7 and 8 through the ball slide guide 11 in the diamond cutting direction according to the shape of 9. At this time, the diamond cutting body 12 is connected to the copying body 13 without any looseness by the ball screw 15 or the like. Therefore, the diamond cutting body 12 is cut on the ball guide rails 7 and 8 via the ball slide guide 9 in synchronization with the body body 13. The shape of the template 19 is transferred to the grindstone 2 by moving in the inserting direction according to the shape of the template 19.

When the grindstone 2 has a cylindrical shape as in this embodiment, the template 19 is a straight line parallel to the grindstone shaft 3 and is carried by the traverse rail 4 via the traverse slide guide 5 and the traverse screw 10 gives a feed force. The movement of the traverse body 6 to be performed is such that the diamond cutting body 12 having the diamond bar 26 fixed thereto and the copying body 13 even when the traverse feeding device does not have good straightness and swings in the cutting direction of the grindstone correcting tool. Is a ball screw 1
5, the stylus 18 is fixed to the copying body 13, and the stylus 18 is pressed against the template 19 by the copying spring 22 provided as a driving force of the copying. Follow the correct linear motion according to.

When the diamond cutting body 12 and the copying body 13 are moved as described above, both the diamond cutting body 12 and the copying body 13 have two ball guide rails 7 and 8 on the traverse body 6.
, Each of which is associated with three ball guide bearings 9, 11. The three ball slide guides 9 and 11 support the main component force and the feed component force applied to the diamond tool 25, and the left and right, front and rear, and up and down directions based on the third component force obtained by adding the back component force to these two component forces Support the moment of. Also, traverse body 6
The stylus 18 is adjusted so that the stylus 18 is always in contact with the template 19 by pulling each other with the copy body 13 by the copy spring 22, and the tension of the copy spring 22 rotates the hanger 24 from the outside depending on the situation. It is a structure that can be adjusted.

In the embodiment, the traverse guide rails 4 and 4 and the ball guide rails 7 and 8 are arranged in the horizontal plane, but the plane in which these guide rails are arranged may be a vertical plane, an inclined plane or the like.

〔The invention's effect〕

The present invention provides a bed having a traverse guide surface parallel to the grindstone axis on the upper surface, a traverse body having a cross guide surface in the radial direction of the grindstone on the upper surface which is guided through a linear bearing to the traverse guide surface, and is provided on the bed. A traverse screw feed device for traversing the traverse body, a copying body guided to the cross guide surface through a linear bearing, and a guide body which is relatively movable in the same direction as the copying body with respect to the copying body. A diamond cutting body for cutting, a screw feed device for cutting, which is provided in the copying body to give a cutting feed to the diamond cutting body, a whetstone correcting tool provided in the diamond cutting body, and A template provided on the bed parallel to the axis of the grindstone and having a contact surface on the opposite side of the grindstone, and a template provided on the lower surface of the copying body to contact the template Stylus, including a spring member that is interposed between the traverse body and the copy body and biases the copy body to the grindstone side so that the template and the stylus are in constant contact, and is regulated by the template. While performing the feed in the axial direction of the grindstone by the traverse screw feed device, and the grindstone correction device that performs the feed in the cutting direction by the screw feed device for cutting regardless of the template, (1) Corrected grindstone as in the present invention When the position in the cutting direction is controlled by pressing the template and the stylus into contact with each other, when correcting the outer circumference of the cylindrical grindstone, the straightness of the traverse feeding device that feeds along the working surface across the grinding working surface of the grindstone. Even if is not good, the following effects are obtained because the copying body is made to follow the linear template with the stylus through the spring force. Is not damaged.

(2) In the present invention, since the diamond cutting body on which the diamond bar is mounted is moved forward, the rigidity is always constant even when the diamond is moved forward, and from this point, vibration that tends to occur is generated. Not at all.

(3) In the present invention, since the diamond bar is placed on the diamond notched body, a large diamond bar can be attached. Therefore, it is possible to obtain a high-rigidity dresser despite its small size.

(4) Since the present invention has a structure in which the diamond bar is mounted on the diamond cutting body, the size of the dresser may be the same as that of the single diamond, only by removing the diamond bar and mounting the rotary head on the diamond cutting body. . Further, the single diamond and the rotary diamond can be exchanged externally, which facilitates the exchange.

[Brief description of drawings]

1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a front view of FIG. 1, FIG. 4 is a longitudinal sectional view of a conventional example, and FIG. FIG. 4 is a front view of FIG. 1 ... Bed, 2 ... Whetstone, 3 ... Whetstone axis, 4 ... Traverse guide rail, 5 ... Slide guide, 6 ... Traverse body, 7, 8 ... Ball guide rail, 9 ...
… Ball slide guide, 10… Traverse screw, 11… Ball slide guide, 12… Diamond cutting body, 13… Copying body, 14… Ball nut,
15 ... Ball screw, 16 ... Bearing, 17 ... Pulse motor, 18 ... Stylus, 19 ... Template, 2
0 ... pipe, 21 ... nut, 22 ... copy spring, 23 ... pin, 24 ... hanger, 25 ... diamond tool, 26 ... diamond bar, 31 ... diamond cutting handle, 32 ... diamond Notch screw, 33 ... Bearing, 34 ... Traverse base, 39 ... Cross slide.

Claims (2)

[Claims] 1. A bed having a traverse guide surface parallel to the grindstone axis on the upper surface, a traverse body having a cross guide surface in the radial direction of the grindstone guided on the traverse guide surface via a linear bearing, and the bed. A traverse screw feed device provided for traversing the traverse body, a copying body guided through the cross guide surface via a linear bearing, and a guide capable of moving back and forth relatively to the copying body in the same direction as the copying body. A diamond cutting body for cutting, a screw feed device for cutting, which is provided in the copy body and gives a cutting feed to the diamond cutting body, and a whetstone correcting tool provided in the diamond cutting body. , A template provided on the bed in parallel with the grindstone axis and having a contact surface on the surface opposite to the grindstone, and a template provided on the lower surface of the copy body It includes a stylus to be touched, and a spring member that is interposed between the traverse body and the copying body and that biases the copying body toward the grindstone so that the template and the stylus are in constant contact, and is regulated by the template. A grinding wheel correction device that feeds in the axial direction of the grindstone by a traverse screw feed device and feeds in the cutting direction by the cutting screw feed device regardless of the template. 2. The cross guide surface is two parallel cutting direction guide surfaces, and three linear bearings are engaged with each of the cross guide surfaces to form a diamond cutting body carrying a grindstone correcting tool. Of the three linear bearings that engage one cutting direction guide surface, the two linear bearings from the side closer to the inner grindstone and the other three linear bearings that engage one cutting direction guide surface Fixed to one linear bearing on the side closest to the grindstone, the copy body is fixed to the remaining linear bearing, and the relative position in the cutting direction of the copy body and the diamond cutting body is variable. The grindstone repair device according to item 1.