TWI812137B - with processing unit - Google Patents

Abstract

The belt processing device (10) that moves the processing belt (34) relatively to the workpiece (W) to process the workpiece is equipped with: a first roller (40), which is a processing roller; a second roller (32), which is a driven roller; The processing belt is supported by the first roller and the second roller; the air motor (60) rotates the first roller or the second roller; the elastic ring (44) is installed on the outer periphery of the first roller; and the expansion prevention member ( 46), which is installed on the elastic ring and has a larger elastic modulus than the elastic ring.

Description

With processing device

Field of invention

The present invention relates to a belt processing device that processes the surface of a workpiece using an annular processing belt installed between a plurality of rollers.

Background of the invention

For example, the surface of a mold used in plastic injection molding, or a precision sealing surface provided in a vacuum chamber, etc., is usually ground after cutting in order to improve functionality or aesthetics. In order to perform such a grinding process using an existing machine tool, a grinding tool that can be mounted on the spindle of the machine machine may be used.

Patent Document 1 describes a belt polishing tool including a main body, a holder part coupled to the main body, a power generating part, an annular polishing belt, and a polishing belt that can be supported. A driving roller that rotates and transmits the rotational power received from the power generation unit to the polishing belt, a first driven roller that rotatably supports the polishing belt, and a first driven roller that rotatably supports the polishing belt and contacts the workpiece during polishing. The second driven roller, which is the processing roller, is supported by the polishing belt.

[Prior technical literature] [Patent Document]

[Patent Document 1] Japanese Patent Application Publication No. 2020-163552

[Summary of the invention]

Summary of the invention

In the belt grinding tool of Patent Document 1, the processing roller is supported so as to be rotatable around a rotation axis that is perpendicular to the rotation axis of the processing roller, so that the posture of the polishing belt follows the shape of the processing surface (surface to be polished). However, due to poor installation alignment of the processing roller, it may not be possible to completely grind the belt width. Furthermore, even for workpieces that have been flattened, unpolished areas may occur on the machined surface due to mounting alignment of the workpiece. It is not possible to create a program that allows the processing belt to follow the subtle undulations of the processing surface and imitate the processing surface every time.

The present invention aims to solve the problems of the conventional technology as a technical subject, and to provide a belt that can efficiently obtain a good machined surface (polished surface) by simply installing a normal processing belt without adding a complicated structure. Processing equipment for the purpose.

In order to achieve the above object, according to the present invention, a belt processing device is provided, which moves the processing belt relatively to the workpiece to process the aforementioned workpiece. It is characterized in that it is provided with: a first roller, which is a processing roller; a second roller; a belt is supported by the first roller and the second roller; a rotational power generating unit rotates the first roller or the second roller; an annular elastic body is installed on the outer periphery of the first roller; and a ring A shape-shaped expansion preventing member is mounted on the elastomer and has a greater elastic modulus than the elastomer.

According to the present invention, by installing an elastic body on the surface of the processing roller, the elastic body absorbs the alignment of the processing roller during processing (during belt grinding), the mounting alignment of the workpiece, the step difference in the joint of the processing belt, or the unevenness of the workpiece. The undulating shape of the machined surface can be used to obtain a good machined surface. In addition, the expansion prevention member prevents the elastic body from expanding and deforming in the radial direction due to centrifugal force during the rotation of the processing roller.

10: With processing device

12: Fixture Department

12a: Center hole

14:Tapered part

16: Extension part

16a: Tool mounting hole

18:Flange part

18a:V groove

20: Ontology part

22:Frame

24:Base

24a: Bolt

24b: Bolt

26: Side wall part

28:Joint

28a: Chimeric part

28b: Flange part

28c: Center hole

30: Belt drive part

32: 2nd roller

34: Processing belt

36: Bracket

36a:Bearing

36b:Bearing

38:Rotation axis

38a: Tenon piece

40:Roll 1

42:Roller body

42a: Center hole

42b: ditch

42c: Flange part

42d: concave part

44:Elastic ring

44a:Slit

44b:Inner circumferential surface

46: Expansion prevention member

48:End plate

48a: Body part

48b: Flange part

48c: Center hole

50: Cradle

52:Rotation axis

54:Screw

56:coil spring

58:pin

59: Guide

60: Rotary power generation unit

62:Turbine housing

64:Cylinder

66: Fluid inlet port

68:Output shaft

70: Power transmission department

72: 1st pulley

74: 2nd pulley

76: Drive belt

78: Tensioner

78a: Sliding roller

100:Working machinery

102:Base

104:Workbench

108:Pillar

110:X-axis slider

112:Spindle head

114:Spindle

120: 1st roller

122:Roller body

122c: Flange part

122e: slit

124:Elastic ring

124a: slit

126a: Expansion prevention member

126b: Expansion prevention member

126c: expansion prevention member

128:End plate

128b: Flange part

128d: Flange part

A:arrow

O: axis of rotation

O ₁ : central axis

O ₂ : central axis

W: workpiece

X,Y,Z: axis

Fig. 1 is a side view of an example of a working machine in which the belt processing device of the present invention can be installed.

FIG. 2 is a side view of a belt processing device according to an embodiment of the present invention.

Fig. 3 is a perspective view of the belt processing device of Fig. 2;

Fig. 4 is a cross-sectional view of the belt processing device of Fig. 2;

Fig. 5 is a cross-sectional view of the first roller according to one embodiment.

Figure 6 is a cross-sectional view of the elastic link.

FIG. 7 is a cross-sectional view showing a modification of the first roller.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a side view showing a machine tool 100, which is a general vertical machining center, and a belt processing device 10 according to an embodiment of the present invention installed thereon. The machine tool 100 shown in Fig. 1 is provided with a base 102 as a base fixed to the floor surface of the factory. The upper surface of the base 102 is movable in the Y-axis direction or the front-rear direction (the left-right direction in Fig. 1) and in the The workbench 104 with the workpiece W fixed on the upper surface, and the support 108 erected from the upper surface at the rear part of the base 102 are provided so that the front surface of the support 108 can face the X-axis direction or the left and right direction (in FIG. direction), the front surface of the X-axis slider 110 is configured to move in the Z-axis direction or the up-down direction relative to the Spindle head 112 for central rotation.

Furthermore, the machine tool 100 is provided with an X-axis feeding device (not shown) that reciprocates the X-axis slider 110 in the X-axis direction, and a Y-axis feeding device (not shown) that reciprocates the table 104 in the Y-axis direction. (shown), and a Z-axis feeding device (not shown) that moves the spindle head 112 back and forth in the Z-axis direction. The machine tool 100 further includes a spindle motor (not shown) that drives the spindle 114 to rotate. The spindle motor may be disposed outside or inside the housing (not shown) of the spindle head 112 . The spindle motor is preferably one that can maintain the spindle 114 at a predetermined angular position around the rotation axis O by its torque. The machine tool 100 is further equipped with an NC device (not shown) that controls a spindle motor and a feed device for three orthogonal axes: X-axis, Y-axis, and Z-axis.

The machine tool 100 is preferably further equipped with an automatic tool exchange device (not shown) for exchanging tools (not shown) installed on the front end of the spindle 114 . In this way, the working machine 100 forms an upright In the machining center, the spindle 114 can relatively move and position the workpiece W in three orthogonal directions of the X-axis, Y-axis, and Z-axis, as well as angular positioning around the rotation axis O.

A tapered hole (not shown) for mounting a tool (not shown) is formed at the front end of the spindle 114 of the machine tool 100 . In addition, the main shaft 114 is formed such that a center hole (not shown) penetrates along the rotation axis O. The central hole of the spindle 114 is provided with a tool holding device such as a tie rod (not shown) for fixing the tool installed in the tapered hole. In this embodiment, the tool holding device is configured such that a HSK-type holder, which is a type that is bound on both sides, is fixed to the tapered hole of the spindle 114 .

The tape processing device 10 is a tapered hole that is installed on the spindle 114 of the machine tool 100 . As shown in FIGS. 2 to 4 , the tape processing device 10 includes a main body 20 and a holder 12 fitted into a tapered hole of the spindle 114 of the machine tool 100 . The tapered hole can be used as a tapered hole for installing a tool holder (not shown) that complies with HSK specifications (DIN69893). The tapered hole can also be made to fit into the tapered portion of other shank shapes, such as a 7/24 tapered shank shape.

The retainer part 12 includes a tapered part 14 capable of being in close contact with the inner peripheral surface of the tapered hole of the main shaft 114 of the machine tool 100 , a cylindrical extension part 16 coupled to the main body part 20 , and the extension part 16 and the retainer. The flange portion 18 between the portions 12. The flange portion 18 is formed with a V groove 18 a extending in the circumferential direction, and the V groove 18 a is formed to engage with an exchange arm (not shown) of an automatic tool exchange device attached to the machine tool 100 . In this embodiment, the retainer part 12, especially the tapered part 14 and the flange part 18, are formed to comply with HSK standards (DIN69893). As shown in FIG. 4 , the holder portion 12 may be a commercially available tool holder that complies with HSK standards (DIN69893). At this time, a central hole 12a and a tool mounting hole 16a may be formed inside the holder part ₁₂ along the central axis O1.

When the retainer part 12 has a shape that complies with the HSK standard (DIN69893), since the spindle 114 clamps the retainer part 12 in the tapered hole of the spindle 114, the hollow spindle 114 is equipped with a tie rod (not shown), A clamping device with a plurality of jackets (not shown) and a plurality of disc springs (not shown). The aforementioned pull rod is extended along the rotation axis O in its hollow internal space. The aforementioned plurality of jackets are in tapered hole The plurality of disc springs are arranged in the inner space of the main shaft with the tie rod as the center and at equal angular intervals in the circumferential direction.

The tie rod of the clamping device is a hollow member that forms a fluid passage through which gas such as pressurized air or liquid such as refrigerant circulates. The fluid passage is connected to a fluid source (not shown). When the supplied fluid is pressurized air, the fluid source may include a compressor (not shown) that compresses the air, a storage tank (not shown) that stores the pressurized air, and an outlet disposed in the storage tank. A pressure regulating valve (not shown), etc., which adjusts the pressure of the supplied pressurized air to a predetermined pressure. When the supplied liquid is a liquid such as a refrigerant, the fluid source may include a pump (not shown) that pressurizes the liquid, and a pressure regulating valve arranged at the pump outlet to adjust the pressure of the supplied liquid to a predetermined pressure. (not shown) etc. As the fluid source, a service air system (service air system) of a factory where the machine tool 100 is installed or a refrigerant supply device (not shown) attached to the machine machine 100 can be used.

The main body part 20 includes a belt drive part 30, a rotational power generation part 60, and a power transmission part 70 as main components. The belt driving part 30 , the rotational power generating part 60 and the power transmitting part 70 are installed on the frame 22 . The frame 22 has at least a base 24 and a side wall 26 extending perpendicularly from the base 24 . As shown in FIG. 1 , when the tape processing device 10 is installed on the front end of the spindle 114 of the machine tool 100 , the side wall portion 26 extends in a direction in which the workbench 104 and the workpiece W fixed to the workbench 104 approach. In this embodiment, the base 24 and the side wall 26 are different members and are fastened to each other by the bolts 24 a. However, the base 24 and the side wall 26 may be integrated.

When a commercially available tool holder is used as the holder portion 12 , the main body portion 20 of the tape processing device 10 is provided with a coupling portion 28 coupled to the frame 22 . The coupling portion 28 protrudes from the upper surface of the base portion 24 toward the side opposite to the side wall portion 26 . In this embodiment, the coupling part 28 is fastened to the base part 24 by a plurality of bolts 24b. When a commercially available tool holder is not used as the holder part 12, a fastening mechanism such as a bolt may be used to couple the extension part 16 of the holder part 12 to the base part 24.

The coupling part 28 has a fitting part 28a fitted into the tool mounting hole 16a of the holder part 12 and a flange part 28b integrally coupled to the lower end part of the fitting part 28a, and is formed along the central axis O ₂ Extended central hole 28c. When the fitting portion 28a is fitted into the tool mounting hole 16a of the holder portion 12, the central axis _O1 of the holder portion 12 and the central axis _O2 of the coupling portion 28 coincide with each other. In the embodiment of FIG. 4 , the holder part 12 and the coupling part 28 are formed from different components, and the central hole 12 a of the holder part 12 is formed to open toward the tool mounting hole 16 a. In this embodiment, when the fitting portion 28a is fitted into the tool mounting hole 16a of the holder portion 12, the center hole 12a of the holder portion 12 and the center hole 28c of the coupling portion 28 are connected to form one fluid line. Supply path.

When the retainer part 12 and the coupling part 28 are integrated, the central hole 12 a of the retainer part 12 is formed to penetrate the retainer part 12 along the central axis O ₁ . In this case, the central hole 12a of the retainer portion 12 forms a fluid supply passage. This fluid supply passage communicates with the fluid passage formed in the tie rod of the clamping device when the holder part 12 is clamped in the tapered hole of the spindle 114 .

The belt driving part 30 is attached to the side wall part 26 of the frame 22 . The belt drive unit 30 is provided with a first roller 40 and a second roller 32 , and the processing belt 34 is stretched between the first roller 40 and the second roller 32 . The processing belt 34 is formed by joining both ends of a base material such as cloth adhered to an abrasive material to form an annular shape. The particle size of the subsequent grinding material can be appropriately determined according to the surface roughness required for the grinding or grinding process to be performed.

The first roller 40 is rotatably supported by the side wall portion 26 and the bracket 36 attached to the side wall portion 26 . More specifically, the first roller 40 is attached to the rotation shaft 38 rotatably supported by the side wall portion 26 and the bracket 36 via bearings 36 a and 36 b. A tenon 38 a engaged with the inner peripheral surface of the first roller 40 and the outer peripheral surface of the rotating shaft 38 may be disposed between the first roller 40 and the rotating shaft 38 so that the first roller 40 does not rotate relative to the rotating shaft 38 . When the first roller 40 is installed on the side wall part 26 and the bracket 36, the outer peripheral surface of the first roller 40 protrudes in the direction of the central axis _O1 further than the side wall part 26.

The first roller 40 includes a cylindrical roller body 42 , at least one elastic ring 44 as an elastic body fitted to the outer peripheral surface of the roller body 42 , and an end plate 48 . The roller body 42 has a central hole 42a through which the rotation shaft 38 passes. A groove 42b for passing the tenon 38a and extending in the axial direction may be formed on the inner peripheral surface of the roller body 42. A flange portion 42 c protruding in the radial direction to prevent the elastic ring 44 from coming off is provided at one end of the roller body 42 . A recess 42d for accommodating the end plate 48 is formed at the other end of the roller body 42.

The elastic ring 44 is an annular member formed of an elastic material such as foam rubber, such as fluorine rubber sponge, installed on the outer peripheral surface of the roller body 42 . The elastic ring 44 has a slit 44 a extending in the circumferential direction, and an inner peripheral surface 44 b that is in close contact with the outer peripheral surface of the roller body 42 . The slit 44a is formed with a predetermined depth in the radial direction from the outer peripheral surface of the elastic ring 44 and a predetermined width (axial dimension) in the axial direction. The slit 44a may be merely a cutout cut to a predetermined depth from the outer peripheral surface in the radial direction.

An expansion prevention member 46 is embedded in the slit 44 a to prevent the elastic ring 44 from expanding and deforming in the radial direction due to centrifugal force when the first roller 40 rotates. The expansion prevention member 46 may be a ring-shaped member made of a material having a larger elastic modulus than the elastic ring 44 which is an elastic body, such as a resin thin plate. Alternatively, the expansion prevention member 46 may be two arcuate members obtained by dividing the above-mentioned annular member along a diameter of 2 or three arcuate members divided into three equal parts so that the center angle becomes 120°. Furthermore, when the expansion prevention member 46 contacts the processing belt 34, it will have a negative impact on the erection of the processing belt 34. Therefore, the outer diameter of the expansion prevention member 46 is larger than the outer diameter of the elastic ring 44 both during processing and non-processing. The one with smaller diameter is better.

The end plate 48 has a cylindrical body part 48a and a flange part 48b protruding in the radial direction from one end of the body part 48a. The end plate 48 is formed with a central hole 48c through which the rotation shaft 38 passes. When the end plate 48 is fitted into the recessed portion 42d of the roller body 42, the elastic ring 44 fitted to the outer peripheral surface of the roller body 42 is sandwiched between the flange portion 42c of the roller body 42 and the flange portion 48b of the end plate 48. between. This prevents the elastic ring 44 from moving in the axial direction and being separated from the roller body 42 .

字形的搖架50的旋轉軸52。搖架50是設成可沿著導件59朝箭頭A所示的方向移動。螺釘(stud)54固定於托架36，具有間隙地貫入搖架50的孔(圖未示)，在螺釘54的周圍配設螺旋彈簧56。搖架50藉由螺旋彈簧56而朝從托架36遠離的方向賦予勢能。搖架50可藉由為固定機構的銷58，而在從托架36分離任意距離的狀態固定。具體來說，利用作成銷58貫通螺 合於搖架50且銷58的前端抵接於貫入到搖架50內部的螺釘54的外周，而可在使銷58旋轉動作時，固定搖架50的位置。於加工帶的交換作業中，在將加工帶卸除的情況，首先解除銷58的固定，使搖架50沿著導件59接近於托架36，將銷58固定，作成已將加工帶34的架設狀態解除了的狀態之後，可從第1輥40和第2輥32將加工帶34卸除。又，在進行加工帶34的安裝的情況，於已將上述之加工帶34卸除的狀態下，將要新安裝的加工帶34安裝於第1輥40和第2輥32，解除銷58的固定時，搖架50藉由螺旋彈簧56的彈力而從托架36分離，加工帶34成為架設狀態，所以進一步藉由銷58來固定搖架50的位置，藉以完成加工帶34的安裝。藉由該等構造和作業順序，不管作業者的熟練度而可進行帶的交換作業，且可設定加工帶34的張力。 The second roller 32 is rotatably supported on the

The rotation axis 52 of the cradle 50 is shaped like a font. The cradle 50 is movable along the guide 59 in the direction indicated by arrow A. A screw (stud) 54 is fixed to the bracket 36 and penetrates a hole (not shown) of the cradle 50 with a gap. A coil spring 56 is arranged around the screw 54 . The cradle 50 is given potential energy in the direction away from the bracket 36 by the coil spring 56 . The cradle 50 can be fixed at any distance away from the bracket 36 by the pin 58 as a fixing mechanism. Specifically, the pin 58 is threaded through the cradle 50 and the front end of the pin 58 is in contact with the outer periphery of the screw 54 that penetrates into the cradle 50 , so that when the pin 58 is rotated, the cradle 50 can be fixed. Location. In the process of replacing the processing belt, when removing the processing belt, first release the fixation of the pin 58, bring the cradle 50 close to the bracket 36 along the guide 59, fix the pin 58, and make the processing belt 34 After the erection state is released, the processing belt 34 can be removed from the first roller 40 and the second roller 32 . In addition, when installing the processing belt 34, in the state where the processing belt 34 has been removed, the processing belt 34 to be newly installed is installed on the first roller 40 and the second roller 32, and the fixation of the pin 58 is released. At this time, the cradle 50 is separated from the bracket 36 by the elastic force of the coil spring 56, and the processing belt 34 is in an erect state. Therefore, the position of the cradle 50 is further fixed by the pin 58, thereby completing the installation of the processing belt 34. With these structures and operation procedures, the belt exchange operation can be performed regardless of the skill level of the operator, and the tension of the processing belt 34 can be set.

The rotational power generation unit 60 includes a rotational motor. The rotary motor may be an electric motor, but a fluid motor, especially a pneumatic motor with a turbine (not shown) is preferred. The air motor as the rotational power generation unit 60 has a cylinder 64 that rotatably accommodates a turbine, and a turbine housing 62 that forms a fluid inlet port 66 that communicates with the cylinder 64 . Fluid inlet port 66 communicates with the fluid supply passage. In this embodiment, the fluid inlet port 66 is connected to the central holes 12 a and 28 c of the retainer part 12 and the coupling part 28 .

The power transmission unit 70 includes a first pulley 72 , a second pulley 74 , a drive belt 76 extending between the first pulley 72 and the second pulley 74 , and a tensioner 78 . The first pulley 72 is attached to the output shaft 68 so as to rotate together with the output shaft 68 of the air motor of the rotational power generating unit 60, and forms an input pulley. The second pulley 74 is attached to the rotation shaft 38 so as to rotate together with the rotation shaft 38 for the first roller 40 . The drive belt 76 may be configured as a toothed belt or a cog belt. When the drive belt 76 is a toothed belt or a toothed belt, the first pulley 72 and the second pulley 74 are formed of toothed pulleys having a plurality of teeth that engage with the drive belt 76 . A certain tension is applied to the drive belt 76 by a tensioner 78 having a sliding roller 78 a engaged with the back surface of the drive belt 76 between the first pulley 72 and the second pulley 74 .

When the tape processing device 10 is clamped in the tapered hole of the spindle 114 of the machine tool 100, the flow The body supply passages 12a and 28c are then connected to the fluid passage of the tie rod of the clamping device. The fluid, such as pressurized air or refrigerant, passes from the fluid supply source through the fluid passage of the tie rod of the tool holding device of the spindle, the fluid supply passages 12 a and 28 c of the belt processing device 10 and the fluid inlet port 66 of the fluid motor as the rotational power generation unit 60 It is supplied to the cylinder 64 to rotate the turbine arranged in the cylinder 64 .

This rotation is transmitted to the rotating shaft 38 through the first pulley 72, the drive belt 76, and the second pulley 74 attached to the output shaft 68 of the fluid motor. Therefore, the first roller 40, which is a processing roller, is rotated and is mounted on the first pulley 72. The processing belt 34 between the roller 40 and the second roller 32 is driven. During this time, the first roller 40 functions as a driving roller, and the second roller 32 functions as a driven roller. In this way, while the processing belt 34 is driven to circulate between the first roller 40 and the second roller 32, the processing belt 34 is sandwiched therebetween and the first roller 40 is pressed against the surface of the workpiece W, and the spindle 114 is It moves relative to the worktable 104, whereby the surface of the workpiece W is processed (grinded or ground).

By arranging the elastic ring 44 which is an elastic body at the outer peripheral portion of the first roller 40 which is the processing roller, the elastic body can prevent the installation misalignment of the processing roller that is a problem during processing or the workpiece that becomes the processing target. Absorbing the undulating shape of the surface, etc., without forming a special program, as long as the belt processing device is moved along the surface to be processed of the workpiece W according to the processing formula (NC program) according to the designed shape, a good machined surface can be obtained. Furthermore, the expansion prevention member 46 is embedded in the elastic ring 44 to prevent the elastic ring 44 from expanding and deforming in the radial direction due to centrifugal force during the rotation of the first roller 40 . That is, the expansion prevention member 46 can solve the problem of unintentional tension being applied to the processing belt 34 and adversely affecting the processing of the workpiece W, or the elastic ring 44 in the portion that is not engaged with the processing belt 34 . There is a problem of expansion and interference with various parts of the main body 20 .

In the above-described embodiment, the expansion prevention member 46 is formed from the outer peripheral surface of each elastic ring 44 with a predetermined depth in the radial direction and a predetermined width (axial dimension) in the axial direction, and is arranged to extend in the circumferential direction. The slit 44a includes, for example, an annular member made of a resin thin plate, two arcuate members, or three arcuate members, but the present invention is not limited thereto. In the present invention, the expansion prevention member can prevent the elastic body disposed on the outer peripheral surface of the processing roller from expanding in the radial direction due to centrifugal force during the rotation of the processing roller. Just deform.

FIG. 7 shows the first roller 120 which is a modification of the processing roller. The first roller 120 of this embodiment is different from the first roller 40 of the above embodiment except that the elastic ring and the expansion prevention member are elastic bodies and are different from the expansion prevention member 46 in the above embodiment. The composition is roughly the same.

In FIG. 7 , the elastic ring 124 has a slit 124 a extending in the circumferential direction. The slit 124a is formed with a predetermined depth from two opposite side surfaces in the axial direction of the elastic ring 124 and a predetermined width (radial dimension) in the radial direction. The slit 124a may be fitted with expansion prevention members 126a and 126b that prevent the elastic ring 124 from expanding and deforming in the radial direction due to the centrifugal force generated by the rotation of the first roller 120 .

The expansion prevention members 126a and 126b may be, for example, ring-shaped members made of a resin thin plate. Alternatively, the expansion prevention members 126a and 126b may be formed into two arcuate members obtained by dividing the above-mentioned ring-shaped member along a diameter of 2, or may be formed into three parts obtained by dividing the above-mentioned ring-shaped member into three parts such that the central angle becomes 120°. Bow member. The expansion prevention member 126a is disposed on the slit 128d of the flange portion 128b of the end plate 128 and the slit 124a formed on the side surface of the elastic ring 124 opposite to the slit 128d. The expansion prevention member 126b is disposed on the two elastic members. The slit 124a on the side facing the ring 124 and the expansion prevention member 126c are arranged in the slit 122e of the flange portion 122c of the roller body 122 and the slit 124a on the side of the elastic ring 124 facing the slit 122e. .

The first roller 120 of FIG. 7 also functions in the same manner as the first roller 40 of the above-mentioned embodiment.

The spindle 114 can relatively move and position the workpiece W in three orthogonal axes directions of the X-axis, Y-axis, and Z-axis, as well as angular positioning around the rotation axis O. Therefore, the spindle 114 can be adapted to the machine tool 100 and the belt processing device 10 The workpiece W is subjected to belt processing. The belt processing is to form a grinding finish surface or a grinding finish surface having grinding marks or grinding marks parallel to a suitable tool feed direction on a precision sealing surface provided in a vacuum chamber or the like. Furthermore, since the machine tool 100 is provided with a tool exchange device, processing steps other than grinding or grinding performed by the belt processing device 10 can be integrated into the processing performed by the machine tool 100 . process steps. Furthermore, by applying a fluid motor or a pneumatic motor to a rotary motor, the belt processing device can be driven by using a fluid supply source that supplies refrigerant, pressurized air, etc., which the working machine 100 already has for lubrication or cooling. 10, there is no need to install a new drive source for the tape processing device 10.

In the above description, an embodiment in which one or two expansion prevention members are installed on one elastic ring is explained. However, it is also possible to more strongly prevent the expansion of the elastic ring due to centrifugal force. situations, etc., install more expansion prevention components as necessary.

10: With processing device

12: Fixture Department

14:Tapered part

16: Extension part

18:Flange part

18a:V groove

20: Ontology part

22:Frame

24b: Bolt

26: Side wall part

28b: Flange part

30: Belt drive part

32: 2nd roller

34: Processing belt

36: Bracket

38:Rotation axis

40:Roll 1

50: Cradle

52:Rotation axis

54:Screw

56:coil spring

58:pin

59: Guide

60: Rotary power generation unit

A:arrow

Claims (5)

A belt processing device that moves a processing belt relative to a workpiece to process the workpiece is characterized in that it is provided with: a first roller, which is a processing roller; a second roller; 2 rollers are supported; a rotational power generating unit rotates the first roller or the second roller; an annular elastic body is installed on the outer periphery of the first roller and has a slit formed at a predetermined depth from the outer peripheral surface; and The annular expansion prevention member is embedded in the slit of the elastomer, has a greater elastic modulus than the elastomer, and has an outer diameter smaller than the outer diameter of the elastomer both during processing and non-processing. The belt processing device according to claim 1, wherein in the processing belt, a portion engaged with the first roller contacts the surface of the workpiece and processes the surface of the workpiece. The belt processing device of claim 1 or 2, wherein the rotational power generating unit is equipped with a fluid motor. The belt processing device of claim 3, wherein the fluid motor is a pneumatic motor. The processing device of claim 1 further includes a holder that is attachable and detachable to the front end of a spindle of a machine tool, and the machine machine includes: the spindle; a worktable configured to face the spindle and fix the workpiece; and The feeding device moves the spindle and the worktable relatively.