JPH03228562A - Tape type polishing device - Google Patents

Abstract

PURPOSE:To secure a good polishing performance and also to remarkably increase a using efficiency per unit length of a tape by performing a reciprocating movement separately from the tape movement with a reciprocating mechanism and making the face performing this reciprocating movement as a polishing work face. CONSTITUTION:A polishing tape 1 is fed at comparatively low speed in a certain direction on the whole, performing a reciprocating movement by reciprocating structure 7 arranged on a moving route of the tape 1 separately from this movement in a certain direction. Consequently, a new grinding face is fed at all times for a polishing work face by the movement in a certain direction and the tape 1 is reciprocated at high speed on this polishing work face, so the polishing work is performed by bringing the body to be polished into contact with the grinding face of this tape 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a polishing device, and particularly to a tape-type polishing device that improves the efficiency of use of an abrasive surface.

[Conventional technology]

Tape-type abrasive materials are currently available in which the abrasive surface is formed by attaching highly wear-resistant particles as abrasive grains to a belt or tape, and this tape-type abrasive member is moved at a constant speed. A method of polishing an object by grinding has been implemented.

On the other hand, there is a conventional device that performs polishing by rotating a disk-shaped polishing (grinding) member, but in this device, the polishing work is limited to a part of the arc-shaped peripheral wall surface or side wall of the disk. It will be done. In contrast, the tape-type device has the advantage that the range of polishing work can be set relatively freely depending on how the tape is applied.

[Problem to be solved by the invention]

FIG. 6 shows the structural concept of a conventional tape type polishing device.

In this conventional configuration, an endless tape 50 is hung between rollers 52 and 53 with the abrasive surface on the outside, and a motor 54 circulates the endless tape 50 between these rollers 52 and 53, so that the work surface is The polishing operation is performed at 50a. This device circulates endless tape, making it possible to use the tape effectively and is economical. However, as the abrasive surface is used many times in response to the circulation of the tape, the abrasive surface wears out over time. There is a problem that polishing efficiency gradually decreases.

FIG. 7 shows another conventional configuration. In this conventional configuration, a roller 55 on which a long abrasive tape 51 is wound is disposed on one side, and a roller 56 for winding up the tape 51 fed out from this roller 55 is disposed on the other side.
It is designed to move only in one direction from to 56.

The advantages and disadvantages of this configuration of the device are exactly opposite to those of the previous configuration. In other words, since the tape moves only in a certain direction, the abrasive surface is always new and has high abrasiveness, but on the other hand, because the abrasive surface of the tape can only be used once, it may be postponed until the abrasive surface is not fully used, or the mode of polishing work may be delayed. In some cases, there is a large portion of the abrasive surface that is not used at all, resulting in an overall uneconomical device.

As mentioned above, conventional tape-type polishing devices have advantages and disadvantages depending on their configuration.For example, if you want to achieve good polishing even at the cost of economic efficiency, use the latter device, and polishing efficiency will decrease to some extent. However, the reality is that the former device is used when it is economical to do so, depending on the purpose.

[Means to solve the problem]

The present invention has been constructed to solve the technical problems of the conventional apparatus described above, and is an apparatus constructed to increase the usage efficiency of the abrasive surface and ensure high polishing efficiency.

To achieve this purpose, a tape (
A reciprocating mechanism is arranged with respect to the path of the tape (which may have an endless configuration depending on the case), and the reciprocating mechanism causes reciprocating movement with respect to the tape, apart from the movement of the tape. This device is configured so that the surface on which this reciprocating movement occurs is used as the polishing work surface.

[Operation] The abrasive tape as a whole is sent in a fixed direction at a relatively low speed, and the tape is reciprocated in addition to the fixed direction movement by a reciprocating mechanism disposed in the tape movement path.

As a result, a new abrasive surface is always supplied to the polishing work surface by the movement in the fixed direction, and since the tape is reciprocating at high speed on this polishing work surface, the object to be polished is placed on the abrasive surface of this tape. Polishing work is done by bringing it into contact.

[Detailed description of the invention]

The configuration of the present invention will be specifically explained below.

First, the structural concept of the present invention will be shown using FIGS. 1 and 2.

FIG. 1 shows a first configuration.

Reference numeral 2 denotes a feeding roll around which abrasive tape (hereinafter simply referred to as "tape") 1 having an abrasive surface formed on one side is wound, and 3 refers to a tape 1 fed out from this feeding roll 2.
A take-up roll for winding up the tape 1, in which a plurality of rollers are arranged to form a moving path for the tape 1, and a reciprocating mechanism for reciprocating the tape with respect to the tape moving path is arranged. .

First, in the illustrated configuration, the fixed rollers that determine the moving path of the tape l are designated by reference numerals 5a, 5b, 5c, 5d, 5e, 5f,
5g is installed. 6 is 5 of these fixed cola
This is a tension roller disposed between a and 5b, and is connected to an air cylinder 4 so that a constant tension is applied to the tape 1 by the air cylinder 4.

In addition to applying tension to the tape 1, the air cylinder 4 also issues a signal to the feed roll 2 to command the feed operation, as will be described later.

Next, 7 shows a reciprocating mechanism for reciprocating the tape l.

This reciprocating mechanism includes a reciprocating section 10 having two rollers 8 and 9, and a reciprocating drive section 11 that causes the reciprocating section 10 to perform reciprocating motion. In the illustrated configuration, the reciprocating drive unit 11 is a crank mechanism driven by the motor 12, but the configuration is not limited to this.In short, any type of reciprocating mechanism that reciprocates in the The composition of the bar does not matter. For example, in addition to the above-mentioned crank mechanism, it is also possible to use a configuration in which reciprocating motion is performed electromagnetically by changing the magnetic poles at a specific frequency.

Note that a sensor 13 is provided for the fixed roller 5g to detect the number of rotations of the roller 5g.
The motor 14 for driving the winding roll 3 in response to the signal of
The rotation speed may be controlled. That is, if the rotation speed of the take-up roll 3 is kept constant, the roll diameter will increase as the tape 1 is wound, and therefore the winding speed will become faster. If this is checked and the motor 14 is controlled so that the fixed roller 5g always rotates at a constant speed, the tape 1 will always be wound up at a constant speed.

Next, the operating state of the device will be explained.

First, the reciprocating portion mechanism 7 is moved by the reciprocating drive unit 11.
- It reciprocates in the Y direction. This operating speed is, for example, several dozen to
Set it to a relatively high speed of several hundred round trips/minute.

Next, to explain the reciprocating movement of the tape in more detail, for example, the reciprocating part 10 of the reciprocating mechanism 7 moves in the Y direction by a movement amount α, so that the tape 1 is drawn into the roller 8 by 2α It moves in the Y' direction by an amount of movement. On the other hand, due to this movement in the Y direction, the tape 1 is similarly fed out in the Y' direction from the other roller 9 of the reciprocating portion 1O with a movement amount of 2α. That is, the same amount of tape 1 as the amount of movement drawn by the roller 8 is fed out from the roller 9, so that the movement of the tape 1 on the upstream side of the reciprocating operation section 10 and the downstream side of the reciprocating operation section 10 is canceled out. , tape movement occurs only between fixed rollers 5d, 5e, and 5f. That is, both on the tape feeding side upstream of the reciprocating mechanism 7 and on the tape winding side downstream of this part, the reciprocating mechanism 10
There is no effect due to the operation of , therefore tape 1 in this part
No reciprocating movement occurs.

Next, when the reciprocating section 10 moves in the X direction, the tape 1 will move in the X' direction by the same amount of movement.

Therefore, by operating the reciprocating section 10, the tape 1 is moved back and forth between the rollers 5d to 5r in response to the reciprocating operation of the reciprocating section 10. Since this reciprocating movement is performed at a high speed, the polishing operation is performed using a large relative speed by bringing the object to be polished into contact with the abrasive surface of the tape 1 that is reciprocatingly moving.

During the reciprocating movement of the tape 1 described above, the winding roll 3
The entire tape 1 is wound up at a speed V (indicated by a thick arrow in the figure) by the drive. That is, in the reciprocating portion of the tape 1, at the same time as the reciprocating movement is being performed, the tape 1 is gradually moving at the speed ①, and therefore the roller 5d
In the reciprocating portion of ~5f, the tape 1 reciprocates and moves toward the take-up roll 3 at the speed V. Therefore, new tape is constantly supplied to the polishing section 15.

On the other hand, the feed roll 2 is normally stopped.

Therefore, as the tape is wound up, the tension roller 6 moves toward the fixed rollers 5a and 5b. This movement activates the limit switch S provided on the air cylinder 4, which issues an activation signal to the motor 16, and the tape 1 is fed out from the feeding roll 2. As the tape 1 is fed out, the tension roller 6 is pulled back, and the limit switch S is activated again to issue a stop signal to the motor 16, thereby stopping the tape 1 from being fed out. By repeating this operation, the tape 1 is fed out intermittently.

FIG. 2 shows the case where the configuration described above is used for an endless tape.

In contrast to the configuration described above in which the tape 1 is fed out in a fixed direction, in this configuration, the tape hung on each roller is formed endlessly.

In this configuration, a drive roll 17 for moving the endless tape 1 is provided, which allows the tape 1 to move.
For example, is always moving at the same speed (2) as the moving speed of the above configuration. On the other hand, due to the operation of the reciprocating part 10, the roller 5
Between d and 5f, the tape 1 performs X' in addition to the movement described above.
-Y' It is performing reciprocating movement in the force direction. In this configuration, since the tape 1 moves at a constant speed (2) throughout its moving path, there is no need for a switch mechanism for intermittently operating the feed roll.

Therefore, the function of the air cylinder 4 is simply to apply a constant tension to the tape 1, so a limit switch or the like is not required. Further, there is no need for a mechanism for checking the number of rotations of the fixed roller 5g to maintain a constant tape winding speed on the winding roll.

This configuration uses endless tape, so
If the abrasive surface is used for a long time, it will come back, but if you replace the tape at this point, even if it is an endless tape,
More efficient usage becomes possible.

Note that numerals 5h and 51 are fixed rollers.

〔Example〕

Examples are shown below.

This embodiment is a more specific version of the configuration shown in FIG. 1, and therefore, the same members as in FIG. 1 are designated by the same reference numerals.

First, the structure of the reciprocating mechanism 7 will be described.

3 and 4, reference numeral 20 denotes a frame material constituting a frame of a reciprocating portion (corresponding to the reference numeral 10 in FIG. 1) of the reciprocating mechanism, and a pair of frame materials 20.2
0, the rollers 8 and 9 are pivotally supported. Arrow 22 indicates a fixed frame fixedly disposed on the main body side of this device. Reference numeral 21 designates guide rods (four in total are used in the illustrated configuration) fixed to the fixed frame 22, through which guide members 23 fixed to the frame material 20 of the reciprocating section 10 are inserted. The reciprocating section 10 includes a guide member 23 and a guide rod 2.
1, it is configured to reciprocate along the guide rod 21 in the X-Y direction.

Reference numeral 25 denotes a rotating shaft that is housed in this fixed frame by a bearing 30 and supported so as to rotate about an axis 26 . 27 is a gear fixed to this rotating shaft, and the motor 1 is connected by a power transmission means 28 such as a belt.
The rotating shaft 25 is configured to be rotated by engaging with another gear 29 that receives rotational force of the second gear.

Reference numeral 31 denotes a cam attached to one end surface of the rotating shaft 25, with its center being a certain distance from the axis 26 of the rotating shaft 25. On the other hand, 32a and 32b are cam followers formed on the frame material 20 side so as to sandwich the cam 31 therebetween.

FIG. 5 conceptually shows how the cam 31 is attached to the rotating shaft 25. As is clear from the figure, the cam is attached to the rotating shaft 25 at four locations, and each attachment location is located at a distance of D+ from the axis 26 of the rotating shaft 25.
, Dz, D3, and D4 (D+>I)2>D3>D4).

33 is an opening formed in the frame material 20, and a cam 31 that is attached to the rotating shaft 25 is inserted through this opening 33.
can be replaced from the outside of the frame material 20 to another position on the rotating shaft 25. Furthermore, 34
is an opening formed to reduce the weight of the frame material 20.

In the above configuration, when the motor 12 is operated, its rotational force is transmitted to the rotating shaft 25 via the transmission means 28, gears 29, and 27, and the rotating shaft 25 rotates around the axis 26, and furthermore, A cam 31 attached to the section also rotates in the same manner. The displacement of the cam 31 due to the rotation of the rotating shaft 25 is transmitted to the cam followers 32a and 32b, but since these cam followers are attached to the frame member 20 that moves guided by the guide rod 21, the displacement is This is transmitted as a reciprocating motion in the -Y direction, and as a result, the reciprocating section 10 consisting of the frame member 21 and the rollers 8 and 9 performs a reciprocating motion along the guide rod 21. Note that the amount of displacement changes depending on the mounting position of the cam 31 at the end of the rotating shaft 25. For example, if the distance between the cam 31 and the center axis of the rotating shaft 25 increases, the amount of displacement during the entire reciprocating motion is 2D. , so the distance traveled by the tape 1 on the polishing work surface (indicated by arrow 35) is 2x2D+ which is 4D,
becomes.

The reciprocating distance of the tape 1 can be adjusted by changing the mounting position of the cam 31 on the rotating shaft 25, as shown in FIG.
As mentioned above, changing the mounting position of 1 is done by changing the frame material 20.
This can easily be done from outside the device via the opening 33 formed in the .

In addition, the tape 1 is fed out and wound up by the method explained in FIG. 1.

Next, the applicants actually conducted a polishing test using the apparatus described above, and were able to obtain very good results.

More specifically, the test was conducted with the reciprocating distance (amplitude) of the tape on the work surface 35 being between 20 cm and 15 cm, and the number of reciprocating movements (frequency) being approximately 100 to 600 times/min. Good polishing was achieved in almost all areas. This is thought to be because the tape reciprocates at a high frequency, so that the relative speed between the object to be polished and the tape is equal to or higher than that of the conventional device.

This relative speed can be achieved by increasing the amplitude or, conversely, by increasing the frequency, but - for boat fishing, it is better to use a small amplitude and a large frequency. I was able to get In other words, when the amplitude is increased in the low frequency region, depending on the state of pressure of the object to be polished against the tape, the object to be polished may undergo reciprocating motion corresponding to the reciprocating movement of the tape due to the contact resistance between the object to be polished and the abrasive surface of the tape. A situation occurred in which the work was difficult unless the object to be polished was firmly held.

On the other hand, when the frequency is increased, the inertia changes in the opposite direction in an extremely short period of time, so the overall result is that these opposite inertias cancel each other out, and as mentioned above, the object to be polished is affected by the movement of the tape. There is no longer anything to follow,
The polishing work was easy and the polishing was good.

Furthermore, since the moving speed (2) of the entire tape is quite slow at several meters, it is possible to effectively utilize the abrasive surface in the width direction of the tape 1 in the polishing work on the polishing work surface 35. Ta. In fact, with conventional devices that move the tape in a fixed direction at high speed, it is difficult to utilize the width of the tape, and especially with devices that only use a long tape once, it is virtually impossible to utilize the width of the tape. Ta.

〔effect〕

As specifically explained above, the present invention disposes a reciprocating mechanism on the path of a tape moving in a certain direction, and causes the reciprocating mechanism to perform reciprocating motion separately from the movement of the tape. Since the moving surface is used as the polishing work surface, the relative speed between the tape and the object to be polished can be maintained high due to the high-speed reciprocating movement of the tape, thus ensuring good polishing performance while also reducing the overall speed of the tape. Since the feeding speed is low, it is possible to dramatically increase the usage efficiency per unit length of tape.

[Brief explanation of drawings]

Fig. 1 is a conceptual diagram showing a first configuration of the present invention, Fig. 2 is a conceptual diagram showing a second configuration, Fig. 3 is a side view of a polishing apparatus showing an embodiment of the present invention, and Fig. 4 is a plan view centered on the reciprocating mechanism portion of the device shown in FIG. 3, FIG. 5 is a schematic diagram showing how the cam is attached to the rotating shaft, and FIG. 6 is a schematic diagram showing a conventional tape-type polishing device. FIG. 7 is a schematic diagram showing another conventional tape polishing device. l... Polishing tape 2... Feeding roll 3... - Winding roll 4... Air cylinders 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h, 5
1.5j...Fixed roller 7...Reciprocating mechanism 10...Reciprocating unit 11...Reciprocating drive unit 12...Motor 20...Frame material 21...Guide Rond 22...・Fixed frame 25... Rotating shaft 26... Axis center of rotating shaft 31... Cam 32a, 32b... Cam follower Fig. 6 Fig. 7 Fig. 1

Claims (4)

[Claims] (1) In a device that performs polishing by moving a tape on which an abrasive surface has been formed, a reciprocating mechanism is arranged along the moving path of the tape that moves in a certain direction, and this reciprocating mechanism moves the tape in the same direction. A tape-type polishing device characterized in that by performing reciprocating movement in addition to directional movement, the reciprocating portion of the tape is used as a polishing work surface. (2) The tape is moved in a fixed direction by winding up the tape fed out from the feeding roll with a take-up roll, and a tension roller is arranged on the tape feeding side upstream of the reciprocating mechanism, and the tape is fed out by displacement of the tension roller. The tape-type polishing device according to claim 1, characterized in that the roll is configured to operate intermittently. (3) The reciprocating mechanism includes a rotary shaft disposed on the fixed frame side, a cam disposed at an end of the rotary shaft at a predetermined distance from the axis, and a reciprocating portion side so as to engage with the cam. The tape according to claim 1 or 2, characterized in that the tape comprises a cam follower disposed in the cam, and the reciprocating part reciprocates in response to the rotation of the cam. Type polishing device. (4) By forming a plurality of cam attachment parts at different distances from the axis of the rotating shaft, and selecting any one of these cam attachment parts as the cam attachment position, the reciprocating part 3. The tape polishing device according to claim 3, wherein the amplitude of the polishing is adjusted.