JP3017373B2 - Dressing machine for internal grinding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dressing device for an inner diameter grinding machine, and in particular, stores a dresser head position predetermined for each work and automatically controls the dresser head based on the position information. Positioning and dresser setup work accompanying work change can be performed very easily.
The present invention relates to a dressing device for an inner diameter grinding machine capable of accurately positioning in a short time and improving the processing accuracy of a grinding process, and capable of greatly improving work efficiency.

[0002]

2. Description of the Related Art When grinding the inside diameter of a work, it is necessary to perform a dressing operation in which the outer shape of the grindstone is brought into contact with a dressing tip of a dresser and rotated to adjust the shape of the grindstone prior to grinding. Each time it is changed, a setup operation for adjusting the position of the dresser in accordance with the inner diameter of the work is required.

In a conventional setup operation, the tip of the dresser tip for dressing is adjusted to the same position as the inner diameter of the work to be machined by manually operating the dresser head adjustment handle, and then the grindstone is dressed to adjust the inner diameter of the work. Test grinding had been done.

[0004] Then, the inner diameter of the ground work is measured to calculate an error from the target dimension, and the operation of correcting the dresser position by the error and grinding again is repeated until the target dimension is obtained. Was.

[0005] Among the set-up operations, dresser position adjustment has a large direct effect on the machining accuracy of the work, and requires work and intuition. Only experienced workers having many years of experience can perform this operation. However, there is a disadvantage that even a veteran worker takes a long time for the setup due to the repetitive work described above, and cannot improve the work efficiency.

[0006] In addition, many of the parts to be ground are relatively expensive parts subjected to high precision processing, and it is necessary to prepare a special work for test grinding for setup work.
There is a disadvantage that the cost of the product is increased accordingly.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to eliminate the above-mentioned disadvantages of the prior art, and has as its object to control a feed screw of a feed screw mechanism for moving a dresser head. The dresser head can be positioned at an arbitrary position with high precision by controlling and rotating it by the device, and this facilitates the setup work associated with work change, especially the dresser position adjustment work that is particularly difficult. Is to be able to do it.

Another object of the present invention is to make it possible to carry out a setup operation without test grinding by the above-mentioned configuration, to greatly reduce the time required for the setup operation and to improve the operation efficiency. Is to do
Another object of the present invention is to reduce costs by eliminating the need for a test grinding work, thereby reducing product costs.

[0009] Yet another object is by transferring the card to a predetermined dresser head position for each workpiece is stored in the control device for controlling the dresser head position by reading the position information, to be processed corresponding to the work
And that to allow the dresser head can be accurately positioned by a simple operation of just placing the card in the card reader and is to ensure that immediate response without mistaking this also often work changes.

[0010]

In summary, the present invention (Claim 1) provides a work holder for holding and rotating a work, and a work holder disposed opposite to the work holder and rotating a grindstone on an inner diameter portion of the work. medium in dresser inner diameter grinding machine for dressing the outer peripheral portion of the rotary grindstone and a grindstone, a dresser dressing chip is attached to the distal end of the support shaft the contacted by grinding the inner diameter portion of the workpiece
A dresser head that is configured to be rotatable vertically in the center and that is horizontally movable in a direction to approach or separate from the rotating grindstone; and a female screw provided in the dresser head, which is screwed and rotated by a driving device. A feed screw mechanism for causing the dresser head to move toward or away from the rotating grindstone, and a control for sending a command signal to the drive device to move the dresser head to a predetermined position. Equipped with an internal grinding machine ,
Automatically position the dresser head based on stored information
It is characterized in that it is configured so that

Further, according to the present invention (claim 2), a work holder for holding and rotating a work, and a grinding wheel, which is disposed opposite to the work holder, is brought into contact with an inner diameter portion of the work while rotating a grindstone. A dressing device equipped with a rotating grindstone that grinds an inner diameter portion and dressing the outer peripheral portion of the rotating grindstone, wherein a dresser having a tip for dressing mounted at the tip can be turned up and down around a spindle.
And a dresser head disposed horizontally movably in a direction to approach or separate from the rotating grindstone, and screwed into a female screw disposed on the dresser head and rotated by a driving device to rotate the dresser head. A feed screw mechanism for moving in the direction of approaching or leaving the rotating grindstone, a control device for sending a command signal to the drive device to move the dresser head to a predetermined position, and the inner diameter of Research and a card reader for transmitting to the controller from the card to predetermined dresser head position is stored by reading the positional information
Comprising the Kezuban, serial the dresser head of each of the workpiece
It is characterized in that it can be automatically positioned based on memory information .

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. 1 and 2, a dressing device 1 for an inner diameter grinding machine according to the present invention includes a dresser head 2, a feed screw mechanism 3, a control device 4, and a card reader 5 in an inner diameter grinding machine 6.
In preparation.

In the inner diameter grinding machine 6, a work holder 9 is mounted on a main shaft (not shown) rotatably arranged on a base 8, and the work 10 is held and rotated by the work holder 9. It has become.

A grindstone holder 13 which is opposed to the work holder 9 and rotates a rotating grindstone 11 mounted by being driven by a motor 12 is rotatably arranged on the base 8.

The grindstone position adjusting handle 14 is operated to turn the rotary grindstone 11 into the inner diameter portion 10a of the workpiece 10 to be machined.
Then, the feed handle 15 is operated to move the work 10 in the left-right direction in FIG. 1 to grind the inner diameter portion 10a of the work 10.

The dresser head 2 is for dressing the outer peripheral portion 11a of the rotary grindstone 11, and has a dresser 18 having a dressing tip 16 mounted at the tip.
Are fixed to the dresser support 19.

The dresser base 21 is slidably mounted on the sliding shaft 20 that is fixed to the base 8, the arrow A or the supporting shaft 2 7 dresser support 19 is fixed to the dresser base 21 It is supported rotatably in the direction B , that is, in the vertical direction .

The feed screw mechanism 3 is for horizontally moving the dresser head 2 in a direction of approaching the rotating grindstone 11 (arrow C direction) or in a direction of separating from the rotating grindstone (arrow D direction). A feed screw 23 screwed into a female screw 22 fixed to the base 21 is rotatably provided on the base 8 by a radial bearing 24 and a thrust bearing 25.

A worm wheel 26 is fixed to one end of the feed screw 23. A worm 30 fixed to a shaft 29 rotated by a driving device 28 meshes with the worm wheel 26. The worm 30 is driven by the driving device 28. Is driven to rotate the worm wheel 26, that is, the feed screw 23, to move the dresser head 2 horizontally in the direction of arrow C or D.

The control device 4 controls the rotation of the drive device 28 and includes a known computer including a central processing unit 31, an external storage device 32, and an input / output device 33. It is electrically connected to the driving device 28 by a signal line 34.

The control device 4 is also provided with a pulse handle 35 for manually moving the driving device 28 and a plurality of switches 36 for manual operation.

The card reader 5 reads information stored in a magnetic card (not shown) as an example of a card and transmits the information to the control device 4. 4 is a known magnetic card reader electrically connected to the magnetic card reader 4.

Then, the information stored in the magnetic card is read out and input to the control device 4, and after the information is appropriately processed by the control device 4, a control signal is output to the drive device 28 to rotate the drive device 28. Is configured.

The present invention is configured as described above,
Hereinafter, the operation will be described. In FIG. 1 and FIG.
Then, a magnetic card (not shown) corresponding to “0” is selected, and the stored information is read by a card reader 5 and transmitted to the control device 4.

The control device 4 calculates the position of the dressing tip 16 based on the information, sends a control signal to the driving device 28, and operates the driving device 28 to operate the worm 3
0, the feed screw 23 is rotated via the worm wheel 26, and the dresser head 2 is moved in the direction of arrow C or D to move it to a predetermined position corresponding to the work 10, that is, the position of the inner diameter portion 10a of the work 10.

[0026] After the dresser head 2 is rotated in the arrow A direction around the supporting shaft 2 7, grinding wheel position adjustment handle 14
Is operated to move the rotary grindstone 11 in the direction of arrow E, and the outer peripheral portion 11a of the rotary grindstone 11 is brought into contact with the dressing chip 16 to dress the outer peripheral portion 11a of the rotary grindstone 11, and then the dresser head 2 is moved to the arrow B direction. The workpiece 10 is retracted from the work 10 by rotating in the direction.

The set-up operation is completed by the above operation, and after the work 10 is mounted on the work holder 9 and rotated by the grindstone 11 while being rotated, the dimensions of the inner diameter portion 10a are measured and processed to a predetermined size. Make sure that

Since the dressing tip 16 can be positioned at the optimum position suitable for the work 10 to be machined by the simple operation described above, even if the type of the work 10 is changed, the dressing tip 16 can be quickly and reliably coped with easily. be able to.

If it is desired to machine the inner diameter portion 10a to one of the tolerances, or if it cannot be machined to a predetermined size for any reason, the pulse handle 35 is manually operated to drive the drive unit. 28 is rotated by a slight angle, and the dresser head 2 is slightly moved in the direction of arrow C or D to adjust the finished dimensions.

In the above embodiment, the card storing information is described as a magnetic card. However, the card storing information is not limited to a magnetic card.
It may be a punch card, an IC card, or the like.

[0031]

According to the present invention, the feed screw of the feed screw mechanism for moving the dresser head is controlled and rotated by the control device as described above, so that the dresser head can be accurately positioned at an arbitrary position. In addition, as a result, there is an effect that the setup work accompanying the work change, particularly the work of adjusting the position of the dresser, which is particularly difficult work, can be easily performed.

Further, according to the above configuration, the setup operation can be performed without performing the test grinding process, so that the time required for the setup operation can be greatly reduced and the working efficiency can be improved. This eliminates the necessity of the device, thereby reducing costs and reducing the product cost.

[0033] Furthermore, since as transmitted from the card to predetermined dresser head position for each workpiece is stored in the control device for controlling the dresser head position by reading the position information, the work to be processed has the effect of a dresser head can be accurately positioned by a simple operation of just placing the card must be installed <br/> de corresponding to the card reader, and as immediate response without mistakes even result frequent work changes Is obtained.

[Brief description of the drawings]

FIG. 1 is a front view of an inner diameter grinding machine.

FIG. 2 is a partial longitudinal sectional side view of a dresser head.

[Explanation of symbols]

Reference Signs List 1 dressing device for inner diameter grinding machine 2 dresser head 3 feed screw mechanism 4 control device 5 card reader 9 work holder 10 work 10a inner diameter portion 11 rotating grindstone 11a outer peripheral portion 16 dressing tip 18 dresser 22 female screw 27 support shaft 28 drive device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B24B 53/00 B24B 53/08

Claims (2)

(57) [Claims] 1. A work holder for holding and rotating a work, and a rotating grindstone disposed opposite to the work holder and configured to contact the inner diameter of the work while rotating the grindstone to grind the inner diameter of the work. In the dressing device of the inner diameter grinding machine for dressing the outer peripheral portion of the rotary whetstone comprising
Supporting the dresser dressing chip is mounted on the tip
A dresser head that is configured to be rotatable up and down around an axis and that is disposed so as to be horizontally movable in a direction to approach or separate from the rotating grindstone; A feed screw mechanism that is rotated in the direction of moving the dresser head toward or away from the rotary grindstone, and sending a command signal to the driving device to move the dresser head to a predetermined position. a controller for including <br/> the inner diameter grinding machine, automatically on the basis of the dresser head in the storage information
A dressing device for an inner diameter grinding machine, wherein the dressing device is configured to be capable of positioning . 2. A work holder for holding and rotating a work, and a rotating grindstone disposed opposite to the work holder, the grinding wheel being rotated to contact the inner diameter of the work while grinding the inner diameter of the work. In the dressing device of the inner diameter grinding machine for dressing the outer peripheral portion of the rotary whetstone comprising
Supporting the dresser dressing chip is mounted on the tip
A dresser head that is configured to be rotatable up and down around an axis and that is disposed so as to be horizontally movable in a direction to approach or separate from the rotating grindstone; A feed screw mechanism that is rotated in the direction of moving the dresser head toward or away from the rotary grindstone, and sending a command signal to the driving device to move the dresser head to a predetermined position. a control device for, and a card reader predetermined dresser head position for each of the workpiece is transmitted from the stored card to the controller reads the position information on the inner diameter grinding machine, the Doressahe
Position is automatically determined based on the stored information for each workpiece.
A dressing device for an inner diameter grinding machine, wherein the dressing device is configured so as to be determined .