JPH0911130A - Dressing method - Google Patents

Abstract

PURPOSE: To easily perform highly accurate dressing without detaching a grinding wheel from a grinder. CONSTITUTION: A dressing device with a disc dresser 21 whose axial direction crosses at right angles with the axial direction of a grinding wheel 15 is detachably mounted on a rotary table of a grinder. This constitution eliminates any necessity of detaching the grinding wheel 15 from the grinder in dressing so as to improve workability in dressing. And in dressing, the dresser 21 is rotated, and the dresser 21 and the grinding wheel 15 are relatively moved in the vertical direction. In this state, the axial line of the dresser 21 is made to change in such a state as following the use face 15a of the grinding wheel 15 so that the use face 15a of the grinding wheel 15 is dressed in the specified shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dressing method for dressing a grindstone of a forming grinder.

[0002]

2. Description of the Related Art The grinding wheel of a forming grinder must be dressed in an accurate shape according to the shape of a workpiece to be ground. Conventionally, when dressing a grindstone, the grindstone was removed from the grinder, and the grindstone was mounted on a dedicated independent dressing device to dress the grindstone. Then, after the dressing of the grindstone was completed, the grindstone was mounted on the grinder again.

However, in the conventional dressing method, since the grindstone must be attached to and detached from the grinder every time the grindstone is dressed, work efficiency is poor. In addition, when the grindstone is mounted on the grinder after the dressing, there is a problem that the grindstone loses the balance and the grinding accuracy is deteriorated.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a dressing method capable of easily and accurately dressing without removing a grindstone from a grinder. .

[0005]

In order to achieve the above object, in the invention according to claim 1, a flat section arcuate edge portion whose axial direction is orthogonal to the axial direction of the grindstone is provided on the table of the grinder. Attaching a dresser having a, contacting the use surface of the rotating grindstone to the peripheral surface of the dresser, dressing the grindstone by moving the relative position of the dresser and the grindstone so that the axis of the dresser follows the use surface of the grindstone. What to do is the gist.

The gist of the invention of claim 2 is to perform dressing of a grindstone while rotating the dresser. The gist of the dressing method according to claim 3 is to perform dressing of the grindstone while relatively moving the dresser and the grindstone in the vertical direction.

[0007]

According to the first aspect of the invention, when dressing is performed, first, the dressing device is mounted on the table of the grinding machine. Next, while rotating the grindstone, the surface of the grindstone is brought into contact with the peripheral surface of the dresser. In a state where the both are in contact with each other, the dresser is moved along the use surface of the grindstone to dress the use surface of the grindstone into a predetermined shape.

According to the second aspect of the present invention, the first aspect is provided.
In addition to the operation of the invention described in (1), dressing of the grindstone while rotating the dresser prevents uneven wear of the dresser.

According to a third aspect of the invention, there is provided the above-mentioned second aspect.
In addition to the effect of the invention described in (1), dressing of the whetstone is performed while moving the dresser and the whetstone in the vertical direction, whereby further uneven wear of the dresser is prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a grindstone base unit 12 and a table 13 are arranged on the bed 11. The grindstone base unit 12 is moved relative to the bed 11 in the front-rear direction Y (left-right direction in FIG. 1) and the left-right direction X (left-right direction in FIG. 2) by a drive mechanism (not shown). A grindstone shaft motor 14 oriented in the X direction is supported on the grindstone base unit 12. The grindstone shaft motor 14 is supported by the grindstone base unit 12 so as to be vertically movable (swingable). A grindstone 15 is rotatably supported by the grindstone shaft motor 14. As shown in FIG. 5, this grindstone 1
The cross section of the use surface 15a of No. 5 is formed in a circular arc shape which is a part of a perfect circle.

The table 13 moves relative to the bed 11 by a drive mechanism (not shown). Further, on the upper surface of the table 13, a rotary table 16 having a rotation axis orthogonal to the top surface of the table 13, that is, a rotation axis orthogonal to the rotation axis of the grindstone 15, is rotatably supported by driving the motor M. A dressing device 17 is supported on the upper surface of the.

As shown in FIGS. 3 and 4, the base 18 constituting the dressing device 17 is the rotary table 16 described above.
It is detachably attached to the upper part with a bolt 26. A shaft 19 is fixed to the upper surface of the base 18 via bolts 20. A dresser 21 is inserted through the shaft 19. The dresser 21 is formed by alternately stacking disc-shaped steel materials 22 and titanium materials 23, and is clamped and fixed by a nut 25 while being sandwiched between a nut 24 and a step surface 19 a of the shaft 19.

Next, the operation of this embodiment will be described.
When dressing the grindstone 15, first, the grindstone 15 and the rotary table 16 are rotated. Next, the grinding wheel base unit 12 and the table 13 are moved to move the usage surface 1 of the grinding wheel 15.
5a and the dresser 21 are brought into contact with each other. Then, the table 13 is moved to change the locus of the shaft 19 with respect to the use surface 15a, that is, the locus of the rotation axis of the dresser 21 so as to follow the use surface 15a of the grindstone 15 as shown in FIGS. At the same time, the grindstone 15 is moved up and down. In this way, the use surface 15a is dressed in a predetermined shape.

As described above, in this embodiment, the dressing device 17 having the disk-shaped dresser 21 is mounted on the rotary table 16, so that the dressing can be performed without attaching or detaching the grindstone 15 to or from the grinder. it can.
As a result, the whetstone 15 can be efficiently dressed. In addition, since the work of attaching and detaching the grindstone 15 is not required, the balance of the grindstone 15 can be prevented from being lost, and the grinding accuracy can be improved. Further, if the dressing device 17 interferes with the grinding process, the dressing device 17 can be removed from the rotary table 16.

Further, the dresser 21 is rotated and the grindstone 15 is used.
Use surface 15a while moving vertically relative to
By performing the dressing, it is possible to prevent uneven wear of the dresser 21. Further, since the dresser 21 is formed by laminating two different types, dressing with higher accuracy becomes possible.

The present invention can also be configured as follows. (1) In the above-described embodiment, the dresser 21 in which a plurality of different materials are laminated is used, but the present invention may be embodied in a dresser in which the same material is laminated or a dresser having one layer. Good. Further, the material of the dresser 21 may be changed appropriately.

(2) In the above embodiment, the dresser 21 was rotated and moved vertically relative to the grindstone 15 during dressing. However, the dresser 21 may be rotated,
The dressing may be performed without moving it in the vertical direction.

(3) Although the disk-shaped dresser 21 is used in the above embodiment, the dresser may not necessarily be disk-shaped as long as its planar shape is an arc shape. (4) In the above embodiment, the dresser 21 is used during dressing.
Dressing was performed by moving the dresser 21 so that the center of the pattern follows the use surface 15a of the grindstone 15. However, as shown in FIG. 6, the dresser 21 may be fixed and the grindstone 15 may be moved to perform dressing. .

The technical ideas other than the claims, which are grasped from the above-mentioned respective embodiments, will be described below together with their effects. (1) The dressing method according to any one of claims 1 to 3, wherein the dressing method is performed by using a dresser configured by laminating different materials.

According to this dressing method, the method according to claim 1 is provided.
~ In addition to the effect of the dressing method according to any one of claims 3 to 5, dressing can be performed more efficiently and accurately.

[0021]

According to the invention of claim 1, dressing of a grindstone can be performed without removing the grindstone from the grinder.

According to the invention of claim 2, according to claim 1,
In addition to the effect of the invention described in (1), it is possible to prevent uneven wear of the dresser, which enables highly accurate dressing, which in turn enables highly accurate grinding.

According to the invention of claim 3, according to claim 2,
In addition to the effect of the invention described in (1), it is possible to further prevent uneven wear of the dresser, which enables highly accurate dressing, which in turn enables more highly accurate grinding.

[Brief description of the drawings]

FIG. 1 is a partial front view of a forming and grinding machine of an embodiment embodying the present invention.

FIG. 2 is a partial side view of a forming and grinding machine.

FIG. 3 is a plan view of a dressing device.

FIG. 4 is a partial front sectional view of a dressing device.

FIG. 5 is a plan view showing a state of a dress and a whetstone during dressing.

FIG. 6 is a plan view showing a state of a dress and a whetstone during dressing of another example.

[Explanation of symbols]

15 ... Whetstone, 15a ... Use surface, 16 ... Rotary table as a table, 17 ... Dressing device, 21 ... Dresser.

Claims (3)

[Claims] 1. A dresser having an arcuate edge of a flat cross section whose axial direction is orthogonal to the axial direction of the grindstone is mounted on a table of a grinding machine, and a peripheral surface of the dresser is brought into contact with a surface of a rotating grindstone. A dressing method for dressing a grindstone by moving the relative position between the dresser and the grindstone so that the axis of the dresser follows the surface of the grindstone. 2. The dressing method according to claim 1, wherein the dresser is dressed while rotating the dresser. 3. The dressing method according to claim 2, wherein dressing of the grindstone is performed while moving the dresser and the grindstone relatively in the vertical direction.