JPH0618771Y2 - Super finishing device - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a superfinishing apparatus having a round work piece.

[Background of the Invention] The super-finishing device has the characteristics that stable machining efficiency and accuracy can be obtained and that it does not require skill because it is a disposable tool system.

As a conventional super-finishing device, there is, for example, one shown in FIGS. 7 and 8.

That is, as shown in FIG. 7, a contact roller 2 around which a polishing film 3 is wound is provided at a position facing the work round material 1 attached to a lathe and rotating in the arrow direction. The polishing film 3 made of a rubber elastic material is a polyester film in which well-controlled abrasive grains are uniformly dispersed and applied.

The polishing film 3 is sandwiched between the contact roller 2 and the work round material 1, and the work round material 1 is polished by the integral operation of the contact roller 2 and the axial vibration of the contact roller 2. The polishing film 3 moves, a new polishing film 3 is wound around the contact roller 2, and the superfinishing work proceeds. The grinding locus 1a of each abrasive grain has a waveform as shown by the broken line, and the superfinished surface has no directionality.

The super finishing device is usually used by being attached to the table of a lathe, and as shown in FIG. 8, a supply spool 5 and a take-up spool 19 are rotatably pivotally attached to a main body frame 4 to supply them. The spool 5 and the take-up spool 19 are large-sized ones on which approximately the same amount of the polishing film 16 can be wound.
It is wound around 7, 8 and 9 and guided and held by the take-up spool 19. The vibrating head frame 20 supports the supporting shafts 13, 1.
The movable head frame 20 is provided with guide rollers 7, 8 on the vibrating head frame 20 side, and guide rollers 6, 9 on the body frame 4 side.

The vibrating head frame 20 is provided with a movable metal fitting 11 supporting the contact roller 10 and a pneumatic cylinder 12 connected to the movable metal fitting 11.
The polishing film 16 wound around 0 is pressed against the workpiece W with a moving distance of 10 to 15 mm, vibrates together with the contact roller 10 by the motor 18, and polishes the workpiece W.
A take-up spool 19 via a toothed belt (not shown)
The used polishing film 16 is wound up by rotating.

Generally, the polishing film 16 has a width of 100 mm or less and a length of 100 mm.
Those within mm are used. There are many types of polishing film 16 depending on the coarseness and fineness of the polishing particles, but in actual work, select 2 to 3 types from these, replace them one after another, polish in order from coarse to fine, and complete each step. To do. It is sufficient for the polishing film 16 used in each step to have a length for polishing one work material W.

"Problems to be solved by the invention" However, the length of the polishing film 16 used in each process is 10 m or less, and the length of the polishing film 1 is 100 m.
In the case of using 6, the unused polishing film 16 of 40 m is wound around the supply spool 5 at the end of polishing, and the used polishing film 16 of 10 m is wound around the winding spool 19. At the time of shifting to the polishing of the next step, for example, the supply spool 5 and the take-up spool 19 are removed in the same state and stored until the next use, or the take-up spool 19 has a length of 40 m. Even the unused polishing film 16 must be wound up together and stored until the next use, and a new take-up spool 19 must be prepared, which requires man-hours and makes it difficult to efficiently perform the disposable method. There was a problem.

During the vibration polishing, the polishing film 16 stretched between the guide roller 6 on the main body frame 4 side and the guide roller 7 on the vibrating head frame 20 side forms the vibrating head frame 2.
A uniform tension is not obtained over the entire width of the film due to the vibration of 0, and the film is in a slack state, the contact resistance between the wrapped polishing film 16 and the contact roller 10, and the polishing when polishing the workpiece W. There is a problem in that the relationship with the resistance becomes unstable and efficient polishing cannot be performed.

The present invention has been made in view of the above-mentioned conventional problems, and it is possible to efficiently perform the disposable method of the polishing film and to efficiently polish the polishing film. It is to provide a solved super finishing device.

"Means for Solving Problems" The gist of the present invention for achieving such an object is to wrap an abrasive film supplied from a supply spool around a roller and press the wound portion against a work. In a superfinishing device that vibrates in the axial direction of the roller to polish a work and winds up a used polishing film, a vibration in which the roller is attached to one end side thereof so as to vibrate in the axial direction. A head, a supply spool that is rotatably pivoted to the other end of the vibrating head, and on which a short-length polishing film is mounted, brake means that serves as rotation resistance of the supply spool, and a predetermined winding amount of the supply spool. In order to be able to wind up twice the used polishing film, the winding spout is formed so that the winding diameter is a predetermined multiple of the winding diameter of the supply spool. It consists in superfinishing apparatus characterized by comprising a Le.

"Operation" To carry out polishing in a predetermined process, cut a long polishing film into short lengths necessary for the polishing in advance, attach the short polishing film to the supply spool, and remove the polishing film. The starting end is pulled out, adhered to the end of the polishing film used in the previous step and wound on the take-up spool, and the starting end is wound around the roller, and then polishing is performed. There is no need to wind the start end of the polishing film around the take-up spool in each step, and there is no waste of the abrasion film between the roller and the take-up spool, so that there is no waste.

During vibration polishing, the supply spool should be wound in a short length,
Since it is made compact and lightweight and is directly attached to the vibrating head, the supply spool vibrates integrally with the roller, and the braking means acts as a rotation resistance of the supply spool, so that the polishing film stretched between the supply spool and the roller is provided. Since a uniform tension acts over the entire width, the contact resistance between the polishing film and the roller does not decrease and is larger than the polishing resistance, efficient and appropriate polishing can be performed.

When polishing of all steps is completed, the used polishing film is all wound up on the take-up spool, and it is not necessary to replace the take-up spool between each step by the conventional method, so the setup time can be shortened. Is.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 to 6 show an embodiment of the present invention.

As shown in FIGS. 1 and 2, the main frame 21 is provided with horizontal support shafts 32, 33, 34, and the horizontal support shaft 3
The vibrating head frame 23 is supported by 2, 33, and 34 so as to be movable in the axial direction. A supply spool 24 is pivotally attached to one end of the vibrating head frame 23, and a contact roller 25 is pivotally attached to the other end of the vibrating head frame 23 via a pivot 25a.

Guide rollers 27 and 28 for guiding the polishing film 16 are provided above and below the contact roller 25 as a center, and between the two guide rollers 27 and 28, a movable metal fitting 26 that supports a pivot 25a of the contact roller 25 is provided. A pneumatic cylinder 35 connected to the movable fitting 26 is attached.

A take-up spool 30 for pulling out the polishing film 16 wound around the contact roller 25 is rotatably attached to the main body frame 21 by a rotating shaft 30a, and a motor 41 is provided to rotate the take-up spool 30. Is installed.

The dustproof cover 22 covers the body frame 21 to cover the vibrating head frame 23, the take-up spool 30, and the motor 41.
Installed on.

A vibration motor 40 is attached to the rear end of the body frame 21. An eccentric disc 43 is integrally fixed to a motor intermediate shaft 42 which is an output shaft of the vibration motor 40,
One end of a connecting rod 44 is externally fitted to the eccentric disc 43, and the other end of the connecting rod 44 and the connecting fitting 45 of the vibrating head frame 23 are connected by a pin 45a. That is, the vibrating head frame 23 is vibrated by the vibrating motor 40.

As shown in FIG. 5 and FIG. 6, the spool 52 is rotatably rotatably attached to the spool shaft 50 projecting from the side plate 57 of the vibrating head frame 23 in a substantially horizontal direction via two sets of ball bearings. Has been done. The spool 52 is the supply spool 24 in FIG. 1 for the short length polishing film 55.

At the tip of the spool shaft 50, a cylinder having a disc portion 50a is non-rotatably fitted by a key. Disk part 5
The magnetic disk 51 is placed between the inner position and the outer position with 0a in between.
a, 51b are provided, and the magnetic disks 51a, 51b are fixed to the outer cylindrical portions 50b, 50c, respectively.
The spool 52 is integrally fitted on the b and 50c.

A magnetic torque unit 51, which is a braking means, is composed of the disc portion 50a and the two magnetic discs 51a and 51b, and the two magnetic discs 51 are sandwiched by the disc portion 50a.
The rotation of the spool 52 is braked by providing a and 51b at opposite positions.

An outer side portion of the spool 52 is a detachable side plate 53. Wound bobbin 5 wound with short length polishing film 55
6 is attached to the spool 52, and then the side plate 53 is attached with a thumbscrew 54 for tightening.

As shown in FIGS. 3 and 4, the contact roller 6
The movable metal fitting for 1 is formed by combining the main body 58a and the support portion 58, and serves to facilitate the removal of the contact roller 61. A support portion 58, which supports both ends of the roller shaft 60 of the contact roller 61, is fastened to the main body 58a with an assembling bolt 59. Further, the main body 58a is provided with a connecting pin hole h for connection with a rod of a pneumatic cylinder (not shown).

Next, the operation will be described.

In order to carry out polishing in a predetermined step, a long polishing film 16 of 50 m is cut in advance to make a short length of 10 m or less necessary for one step, which is wound on a winding bobbin 56 and Attach to supply spool 24.

Next, the starting end of the polishing film 16 is pulled out from the winding bobbin 56, and the starting end is adhered to the end of the polishing film 16 used in the previous step wound around the take-up spool 30. By rotating the take-up spool 30 so that the adhered starting end portion is wound around the contact roller 61, the polishing film 16 in the previous step can be stretched between the contact roller 61 and the take-up spool 30, and the polishing can be performed. It can be used for polishing without waste from the starting end of the film 16.

Next, the lathe table is operated to set the distance between the work surface of the workpiece W and the contact roller 61 to about 8 mm.

Further, each of the motors 40 and 41 is started, and the pneumatic cylinder 35
Are controlled appropriately to start the polishing work.

When the vibration motor 40 is activated and the vibrating head frame 23 vibrates in the axial direction of the pivot 25a of the contact roller 25, the supply spool 24 and the contact roller 25 on the vibrating head frame 23 operate integrally, and the supply spool 24 Film 16 between the roller and the contact roller 25
Is not affected by the vibration of the contact roller 25,
The polishing film 16 stretched between the supply spool 24 and the contact roller 25 does not slack due to uniform tension acting on the entire width.

Further, during the vibration polishing, the polishing film 16 is used as the work material W.
Although the magnetic torque unit 51 suppresses the rotation of the supply spool 24 and pulls the polishing film 16 with a predetermined force or more, the supply spool 24 does not rotate. The polishing film 16 between the supply spool 24 and the contact roller 25 is stretched and drips. First, the contact resistance between the polishing film 16 and the contact roller 25 does not decrease and is larger than the polishing resistance, so that appropriate polishing is performed. be able to.

When the polishing of the predetermined process is completed, the polishing film 16 of a short length is prepared and used in accordance with the work process of the work of one mountain. Therefore, the polishing film 16 wound on the winding bobbin 56 is used.
When the take-up spool 30 is continuously rotated, the end portion of the polishing film 16 is removed from the unused portion of the winding bobbin 5.
Since it is pulled out from 6, it is not necessary to remove the unused polishing film 16.

In order to perform the next step, the side plate 53 is removed, the empty winding bobbin 56 from which all the polishing films 16 have been pulled out is removed, and the short length polishing film 16 for the next step prepared instead is wound. The side plate 53 is attached again with the thumbscrew 54 so that the wound bobbin 56 thus wound is not attached and removed, and the starting end portion of the polishing film 16 for the next step is adhered to the end portion of the pulled-out polishing film 16. .

When polishing of all processes is completed, a large take-up spool 30
Rolls up the polishing film 16 used in each step,
Fill up To start a new process, simply replace the full take-up spool 30 with a new empty take-up spool 30.

"Effect of device" According to the super-finishing device of the present invention, the use of the short-length polishing film according to the amount of work in each case allows the completely disposable system to be executed, which has a great effect on the work management, By adhering the end portion of the polishing film and the start portion of the polishing film in the next step, the increase rate of the unused film due to the shortening of the polishing film can be suppressed, and the same effect as in the case of long winding can be obtained, Between the supply spool and the roller,
The slack in the polishing film is eliminated and the polishing film is supplied smoothly, and good results are obtained on the finished surface.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention.
The figure shows a side view of the superfinishing device, and Fig. 2 shows the same front view.
FIG. 4 is a plan view of the vicinity of the contact roller, FIG. 4 is a front view thereof, FIG. 5 is a longitudinal sectional view of the supply spool, FIG. 6 is a transverse sectional view of the same, and FIGS. 7 and 8 are conventional superfinishing devices. FIG. 16, 55 ... Abrasive film 23 ... Vibrating head frame (vibrating head) 24 ... Supply spool 25, 61 ... Contact roller 30 ... Winding spool 51 ... Magnetic torque unit (brake means)

Claims (1)

[Scope of utility model registration request] 1. A polishing film supplied from a supply spool is wound around a roller, the wound portion is pressed against a work, and the work is polished by vibrating in the axial direction of the roller, and a used polishing film is removed. In a super-finishing device configured to wind, a vibrating head to which the roller is attached to one end side of the vibrating head so as to vibrate in the axial direction; A supply spool on which the polishing film is mounted, a brake unit that serves as a rotation resistance of the supply spool, and a winding diameter of the supply spool so that the used polishing film having a predetermined number of windings of the supply spool can be wound up. A superfinishing device, comprising: a take-up spool formed to have a predetermined winding diameter of a supply spool.