JPH0775953A - Lapping device - Google Patents

Abstract

PURPOSE:To facilitate lapping tape replacing work to a lapping machine so as to shorten the replacing time by a large margin by mounting a cartridge for the lapping tape removably to the lapping machine. CONSTITUTION:When a cartridge 10 is fitted to the mounting part 40 of a lapping machine, a part of a lapping tape 22 in the cartridge 10 is held in contact with the surface of a workpiece W by the pressure contact member 45 of the lapping machine, and the surface of the workpiece W is polished by rotating the workpiece W by the function of the lapping machine and imparting vibration to the lapping tape 22. After polishing, the recovery shaft 19 of the cartridge 10 receives torque by an actuator, so that the lapping tape 22 is wound to the recovery shaft 19 by the used part. When the whole lapping tape 22 of the cartridge 10 is used, the cartridge 10 is removed from the mounting part 40 of the lapping machine and replaced with a new cartridge.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lapping device for polishing and finishing the surface of a work after machining with a lapping tape (sandpaper).

[0002]

2. Description of the Related Art An example of this type of wrapping device is disclosed in the Invention Technical Disclosure Technical Bulletin No. 88-10193. In this device, a wrapping tape is stretched between a pair of reels, and various rolls arranged between these reels bring the wrapping tape into contact with the surface of the work and give a predetermined movement to the tape for polishing. We are processing.

[0003]

When replacing the wrapping tape in the above apparatus, it is necessary to remove the used wrapping tape from one reel and set a new wrapping tape on the other reel. Then, this new wrapping tape needs to be guided to the collecting side reel while being hung on the various rolls or being passed between a pair of rolls. For this reason, it takes time to replace the wrapping tape and the polishing operation is interrupted for a long time. The technical problem of the present invention is to make the wrapping tape a cartridge type, and to enable the polishing work of the work only by attaching the cartridge to the wrapping board, facilitating the replacement work of the wrapping tape and reducing the replacement time. It is to shorten.

[0004]

In order to solve the above-mentioned problems, the lapping apparatus of the present invention is constructed as follows. That is, holding the wrapping tape in contact with the surface of the work set on the wrapping machine, and rotating the work and / or vibrating the wrapping tape in this state, the surface of the work is lapped with the wrapping tape. In a lapping apparatus of a type that performs polishing and then feeds only the amount of the lapping tape used for the next polishing, in the lapping device, the lapping tape is wound in a roll shape and supported, and from the side of the feeding shaft. A cartridge for a wrapping tape is constructed by incorporating a recovery shaft capable of sequentially winding the wrapping tape fed out. On the other hand, the wrapping disk is located between the mounting portion to which the cartridge is detachable and the supply shaft and the recovery shaft when the cartridge is mounted on the mounting portion, and the wrapping tape is placed on the surface of the work. A pressure contact member to be brought into contact with the actuator and an actuator capable of applying a rotational force in a winding direction of the wrapping tape to the recovery shaft when the cartridge is attached to the mounting portion are provided.

[0005]

According to this structure, when the cartridge is attached to the mounting portion of the lapping plate, the pressure contact member of the lapping plate holds a part of the lapping tape in the cartridge in contact with the surface of the work. . Therefore, the surface of the work is polished by rotating the work or vibrating the wrapping tape by the function of the lapping machine. Further, the recovery shaft of the cartridge attached to the mounting portion of the lapping board is adapted to receive a rotational force by the actuator.
Therefore, after the polishing process, by rotating the collecting shaft, the wrapping tape is wound around the collecting shaft by the amount used. When all the wrapping tape of this cartridge is used, the cartridge is removed from the mounting portion of the wrapping board and replaced with a new cartridge.

[0006]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 4 shows a cartridge 10 for wrapping tape.
Is shown in a plan sectional view, and FIG. 5 is a vertical sectional view thereof. As is clear from these drawings, the case 12 of the cartridge 10 has a symmetrical shape in both upper and lower sides and right and left sides.
Inside the case 12, a first shaft 18 serving as a supply shaft and a second shaft 19 serving as a recovery shaft are provided in parallel with each other and rotatably with respect to both side plates 12 a of the case 12. Both the shafts 18 and 19 have a cylindrical shape, and both ends of the shafts 18 and 19 are opposite side plates 12a of the case 12.
The case 12 is opened to the outside through a hole formed in the case 12.

The first shaft 18 and the second shaft 1 in the case 12
A pair of left and right guide rolls 20 are rotatably arranged at three positions on the line connecting the shaft centers of both shafts 18 and 19. That is, each of these guide rolls 20 is located in the center of the case 12 on the left and right sides. Further, both side portions of the case 12 where the guide rolls 20 are located are openings 14 for allowing the pressure contact members 45 of the lapping plate 30 described below to enter (see FIG. 4). Moreover, the notches 16 are formed on both side plates 12a of the case 12 in these openings 14 toward the center of the case 12, and the work W described later is located here.

Inside the case 12, the first shaft 18
A wrapping tape (sandpaper) 22 wound in a roll shape is supported on the shaft of so as to rotate together with the first shaft 18. And this wrapping tape 22
As shown in FIG. 4, the feeding end portion of is guided to the second shaft 19 through the space between the guide rolls 20 and is coupled to the second shaft 19. Therefore, when the second shaft 19 is rotated, the wrapping tape 22 is unwound from the first shaft 18 and sequentially wound around the second shaft 19.
The front and back surfaces of the wrapping tape 22 are both polished, and the tape width is twice the contact width of the shoe 46 constituting the press contact member 450 with the work W, as will be described later. Is set to.

FIG. 6 shows a lapping plate 30 and a work W to be ground by the lapping plate 30. FIG. 6 (A)
A work W is set on the lapping plate 30 indicated by (1) by its spindle chuck 32 and tail stock 34. Therefore, the work W is rotated by the spindle motor 36 through the spindle chuck 32. The work W of this embodiment is, for example, as shown in FIG.
The outer peripheral surface of the flange portion is the surface to be polished Wa. FIG. 7 shows a part of FIG. 6A in an enlarged view, and FIG. 8 shows a plan view of FIG. 7. As is clear from these drawings, the lapping machine 30 is shown in FIG.
(A) and a slide base 38 that can be slid in two directions of the arrow X direction of FIG. 7 and the arrow Y direction of FIG. Moreover, the slide base 38 is configured such that vibration (oscillation) in the direction of the arrow X is applied by driving the oscillation actuator 39.

A detachable mounting portion 40 for the cartridge 10 is integrally assembled to the slide base 38. The inner surface of the mounting portion 40 is the cartridge 1
The plate 41 serving as the reference surface 41a when attaching and detaching 0
And a plate 42 opposed to the plate 41 with a dimension corresponding to the thickness of the case 12 in the cartridge 10 (dimension between the side plates 12a). Both plates 41,
A pressure contact member 45 is provided between 42. A torque keeper 54 and a drive motor 56 are provided outside the one plate 41.

FIG. 1 is a sectional view showing the cartridge 10 attached to the mounting portion 40 of the wrapping board 30.
FIG. 2 shows a sectional view taken along the line AA of FIG. As is apparent from these drawings, the press-contact member 45 enters the inside of the case 12 through the opening 14 by the attachment of the cartridge 10 to the mounting portion 40, and is located there. As shown in FIG. 1, the press-contact member 45 has a pin 49 with respect to the bracket 44 fixed to the mounting portion 40.
A pair of clamp claws 47 rotatably supported by
The clamps 47 are formed by arcuate inner circumferences formed at the tips of the clamp claws 47, and shoes 46 fixed to the inner circumferences. It should be noted that engaging holes 48 which are long in the vertical direction in FIG. 1 are respectively formed in the respective base end portions of the clamp claws 47 which are overlapped with each other, and the connecting members 52 are provided in the longitudinal direction of the holes 48. Slidably engaged along. On the other hand, the mounting portion 40 has an actuator 5 such as an air cylinder for opening and closing the pressure contact member 45.
0 is assembled, and the end of the rod 51 is connected to the connecting member 52. In other words, the operation of the actuator 50 causes both clamp claws 47 to rotate around the respective pins 49, so that the press contact member 45 opens and closes.

The cartridge 10 is a lapping board 30.
In the state where the cartridge 10 is attached to the mounting portion 40, the axis of the first shaft 18 of the cartridge 10 coincides with the shaft 55 of the torque keeper 54 as shown in FIG.
The axis of 9 coincides with the axis 57 of the drive motor 56 that is the driving actuator. And the first axis 18
Further, the collet type connecting shafts 60 respectively inserted into the inside of the second shaft 19 from the opposite side of the torque keeper 54 and the drive motor 56 connect the first shaft 18 and the shaft 55 of the torque keeper 54 to each other. The structure is such that the two shafts 19 and the shaft 57 of the drive motor 56 are coupled to each other so that torque can be transmitted.

The structure of the connecting shafts 60 themselves, the torque keeper 54, and the shafts 55 and 57 of the drive motor 56.
Since the structure of coupling with and is the same, the structure of the arbitrarily selected torque keeper 54 side will be described, and the description of the structure of the drive motor 56 side will be omitted. Connecting shaft 6 in FIG.
The joint between the first shaft 18 and the shaft 55 of the torque keeper 54 according to 0 is shown in an enlarged sectional view. As is apparent from this drawing, a pin-shaped key 61 fixed to the end of the connecting shaft 60 is engaged with the key groove 55a of the shaft 55. Further, the tip end of the notch pin 62 provided on the shaft 55 side is engaged with the recess on the outer periphery of the connecting shaft 60 by the spring force.
As a result, the shaft 55 of the torque keeper 54 and the connecting shaft 60 are coupled so that torque can be transmitted and they are positioned in the axial direction. The relationship between the key 61 and the key groove 55a may be replaced by a well-known spline connection.

In this way, the connecting shaft 60 is connected to the torque keeper 5.
4 is connected to the shaft 55, the connecting shaft 60
The collet 66 provided on the outer periphery of the first shaft 18
It is located inside. Then, the core shaft 64 provided at the shaft center of the connecting shaft 60 is screwed in by operating the handle 63 located outside the cartridge 10, and the taper at the tip of the core shaft 64 causes the collet 66 to move to the first position through the pin 65. It is pressed against the inner peripheral surface of the shaft 18. As a result, the first shaft 18 and the connecting shaft 60 are coupled so that torque can be transmitted in the centered state.

Next, the procedure for attaching the cartridge 10 to the mounting portion 40 of the lapping board 30 will be described. First, the clamp claw 47 of the pressure contact member 45 is attached to the actuator 5
The open position (not shown) is held by the operation of 0, the slide base 38 is moved in the direction of the arrow Y in FIG. 8, and the axial position of the work W set by the spindle chuck 32 and the tail stock 34. The mounting part 40 (pressing member 45) is separated from the. In this state, the cartridge 10 is attached to the mounting portion 40 in a direction in which the first shaft 18 is located on the torque keeper 54 side and the second shaft 19 is located on the drive motor 56 side. At this time, by inserting the case 12 of the cartridge 10 along the reference surface 41a of the plate 41 in the mounting portion 40, finally, as shown in FIG. The edges are attached so that they fit between the side plates 12a of the case 12 and the upper and lower plates 12b without rattling.

Thereafter, the connecting shafts 60 are inserted into the first shaft 18 and the second shaft 19 of the cartridge 10, respectively, and the first shaft 18 is connected to the shaft 55 of the torque keeper 54 by the connecting shafts 60 as described above. The second shaft 19 is connected to the shaft 57 of the drive motor 56. As a result, the inertial rotation of the first shaft 18 can be regulated by the function of the torque keeper 54, and the second shaft 19 can be rotationally driven in the winding direction of the wrapping tape 22 by the drive motor 56.

Next, the slide base 38 is moved in the direction of the arrow Y in the direction in which the mounting portion 40 and the cartridge 10 are directed toward the axial position of the work W, and the work W is inserted into the notch 16 on one side of the cartridge 10. Position it. Here, when the clamp claws 47 of the press contact member 45 which are already located inside the cartridge 10 are closed by the operation of the actuator 50 when the cartridge 10 is attached, the shoes 46 of these clamp claws 47 are used as shown in FIG. The lapping tape 22 is held in contact with the surface Wa to be polished of the work W. However, wrapping tape 22
Since the tape width of the lapping tape 22 is set to twice the contact width of the shoe 46 with the work W as described above, only half of the total width of the lapping tape 22 is the polished surface Wa of the work W.
Will come into contact with.

In the polishing process, while the work W is being rotated by the drive of the spindle motor 36 shown in FIG. 6 (A), the slide base 38 is moved by the oscillation actuator 39 together with the mounting portion 40 and the cartridge 10 as shown by the arrow in FIG. Oscillate in the X direction. As a result, the surface Wa to be polished of the work W is polished by the wrapping tape 22. Pressing member 4 after polishing
5, both clamp claws 47 are opened to the original state, and the slide base 38 is moved in the arrow Y direction of FIG. 8 to separate the mounting portion 40 and the cartridge 10 from the axial position of the work W again. Then, the drive motor 56 is driven to cause the second shaft 19 of the cartridge 10 to move the wrapping tape 22.
Take up the used length. At this time, the inertial rotation of the first shaft 18 is restricted by the torque keeper 54, and the slack of the wrapping tape 22 fed from the first shaft 18 is prevented. With the above, one cycle of polishing by the lapping plate 30 is completed.

By repeating the above polishing process, the lapping tape 22 is eventually entirely wound from the side of the first shaft 18 which is the supply shaft to the side of the second shaft 19 which is the recovery shaft. At this time, the wrapping tape 22 is in a state in which one side of the front and back polishing surfaces and only half the width thereof are used, as already described. Therefore, the cartridge 10 is removed from the mounting portion 40 of the lapping board 30 so that the second shaft 19 serves as the supply shaft (of course, the first shaft 18
If the cartridge 10 is turned upside down and attached to the mounting section 40 again, the wrapping tape 2
As for No. 2, the unused portion of the remaining half width on one side can be used in the same manner as above.

Further, the cartridge 10 is attached to the mounting portion 40 so that the pressure contact member 45 is inserted through the opening 14 on the left side of FIGS. 1 and 4, so that the opposite polishing surface of the lapping tape 22 can be reversed. The sides can be used in half widths as in the previous case. That is, as a result, the wrapping tape 22 can be reciprocated twice between the first shaft 18 and the second shaft 19, and one cartridge 10 can be used four times. Therefore, the wrapping tape 22 can be economically used in this embodiment, as compared with the case where a normal wrapping tape wound in a roll shape is set on the wrapping board and used.

The lapping tape 22 may have only one side surface as a polishing surface, and the entire width of the lapping tape 22 is used in the first polishing process, that is, the contact width of the shoe 46 in the pressing member 45 to the work W is determined by the lapping tape 22. It is also possible to set the same size as the tape width. What is important is that the wrapping tape 22 is a cartridge type.
The polishing work can be performed only by attaching 0 to the mounting portion 40 of the lapping board 30, and the used cartridge 10 and the new cartridge can be easily replaced.

[0022]

As described above, according to the present invention, the work of exchanging the wrapping tape on the wrapping plate becomes easy and the exchanging time is greatly shortened. Therefore, when the device is applied to a mass production line, Lines for replacement will be stopped for a short time, improving production efficiency.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a cartridge attached to a lapping board.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view showing a part of FIG. 1 in an enlarged manner.

FIG. 4 is a plan sectional view showing a cartridge for a wrapping tape.

FIG. 5 is a vertical sectional view of the cartridge.

FIG. 6 is a front view showing a lapping board and a work.

FIG. 7 is an enlarged front view of a part of the lapping board.

FIG. 8 is a plan view of FIG.

[Explanation of symbols]

 10 Cartridge 18 1st axis (for example, supply axis) 19 2nd axis (for example, recovery axis) 22 Lapping tape 30 Lapping board 40 Mounting part 45 Pressure contact member 56 Drive motor (actuator) W work

Claims (1)

[Claims] 1. A surface of a work set by holding the wrapping tape in contact with the surface of the work set on the wrapping board and performing at least one of rotation of the work and vibration of the wrapping tape in this state. In the lapping device of the type in which the lapping tape is polished by the lapping tape, and after the lapping tape is processed, the amount of the lapping tape is used to prepare for the next polishing process. A cartridge for the wrapping tape is constructed by incorporating a recovery shaft capable of sequentially winding the wrapping tape fed from the supply shaft side, and the wrapping board is provided with a detachable mounting portion of the cartridge and the mounting portion. It is located between the supply shaft and the recovery shaft when the cartridge is installed. A pressure contact member for bringing the wrapping tape into contact with the surface of the work; and an actuator capable of applying a rotational force in the winding direction of the wrapping tape to the recovery shaft when the cartridge is attached to the mounting portion. Wrapping device characterized by