JP2019119040A - Polishing body and laminate before formation of teeth thereof - Google Patents

Abstract

To provide a polishing body meshing with a gear to be processed and a laminate before formation of teeth thereof which have easy restrictions on the shape and size of the gear to be processed that can be polished, and can perform polishing work with high precision with respect to the gear to be processed having high hardness.SOLUTION: A polishing body comprises a body molded in a gear shape or screw shape. Teeth 12 meshing with a gear to be processed are integrally formed on an outer periphery or inner periphery of the body. The body is composed of a plurality of laminate materials 11a, 11b laminated in an axial direction of a rotation axis S1 so that a plurality of layers are arranged in parallel in a tooth width direction of each tooth. Two types of the laminate material are provided so as to have different polishing functions and shape retaining functions.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an abrasive that meshes with a gear to be processed and a laminate before forming the teeth.

  It has been publicly known that the work of cutting the gear to be processed is performed by rotating the abraded body having a helical tooth on the outer periphery and having the gear to be processed meshed with each other. (See, for example, Patent Document 1).

  According to Patent Document 1, since the tooth surface of the gear to be processed can be polished with high accuracy, it is possible to perform finishing such as mirror finishing and honing. On the other hand, since the meshing portion between the gear to be processed and the polishing body easily interferes, the size and shape of the gear to be processed are limited.

  On the other hand, there is also known one that performs cutting work of the processed gear by rotationally operating both the shaving cutter and the processed gear with the axis cross angle and meshing with each other. (See, for example, Patent Document 2).

  According to Patent Document 2, even when the axis crossing angle between the shaving cutter and the gear to be processed is small, cutting of the gear to be processed can be performed with high accuracy. The restrictions on size and shape are relaxed, and versatility is improved.

  On the other hand, it is difficult for the shaving cutter to perform the cutting operation on the high-hardness processed gear, and further improvement is desired.

Patent No. 5450870 gazette JP, 2010-184324, A

  A polished body that meshes with a gear to be processed and a laminate before forming its teeth, wherein the restriction on the shape and size of the gear to be processed that can be polished can be relaxed, and high precision can be achieved with a gear with high hardness. It is an object of the present invention to provide a polishing body capable of performing the polishing operation of the present invention and a laminate before forming the teeth.

  In order to solve the above problems, a polishing body according to the present invention is a polishing body that meshes with a gear to be processed, and includes a main body formed in a gear shape or a screw shape, and the outer periphery or the inner periphery of the main body is A plurality of the main bodies are stacked in the axial direction of the rotation axis such that a tooth meshing with the processed gear is integrally formed, and a plurality of layers are juxtaposed in a tooth width direction or a tooth thickness direction of the tooth. The laminated material is characterized in that at least two kinds of materials having differences in polishing function and shape holding function are provided.

  At least two types of the laminated materials may be alternately arranged in the axial direction of the rotation axis.

  The laminated material may be formed by attaching abrasive grains or grinding pieces to a sheet substrate.

  The at least one laminate may be a reinforcing plate having a higher strength than the other laminates.

  The reinforcing plate may be disposed at one end or both ends of the main body.

  On the other hand, the laminate according to the present invention is a laminate of the polishing body before forming a tooth, and includes a plurality of the laminates which laminate and adhere adjacent ones, and the plurality of laminates are the laminates It is characterized in that in the axial direction of the rotation axis, the circular peripheral edges coincide over the entire circumference.

  Since the degree of freedom in meshing between the abrading body and the gear to be processed is increased, the restriction on the shape and size of the to-be-processed gear capable of the polishing operation is relaxed, and a plurality of laminated materials constituting the main body of the abrading body By appropriately selecting each of them, it becomes possible to carry out a polishing operation with high precision on a high hardness workpiece gear.

(A), (B) is respectively the principal part front view and principal part side view of the gear processing apparatus which mounts the grinding | polishing body to which this invention is applied. (A) is explanatory drawing explaining the structure of the tooth | gear of a grinding | polishing body, (B) is explanatory drawing explaining the structure of the tooth of a to-be-processed gear. It is a principal part enlarged view which shows the meshing state of a grinding | polishing body and a to-be-processed gear. (A) thru | or (C) are explanatory drawings which show the manufacturing process of a grinding | polishing body one by one. It is a perspective view which shows the structure of the tooth | gear of a grinding | polishing body. It is a perspective view which shows the structure of the tooth | gear of the grinding | polishing body which concerns on another embodiment of this invention. It is a perspective view which shows the structure of the tooth | gear of the grinding | polishing body which concerns on another embodiment of this invention. (A), (B) is respectively the principal part front view and principal part side view of the gear processing apparatus which concern on another embodiment of this invention. (A) thru | or (C) are the perspective view of the grinding | polishing body which concerns on other embodiment of this invention, a side view, and principal part sectional drawing.

  1 (A) and 1 (B) are respectively a front view and a side view of an essential part of a gear processing apparatus equipped with an abrasive body to which the present invention is applied. The gear processing apparatus includes a polishing body 10 formed in a gear shape, a polishing side support mechanism (not shown) for supporting the polishing body 10 so as to be able to rotationally drive, and a processed surface on which the tooth surface is polished by the polishing body 10 The gear 20 is detachably mounted, and is provided with a polished side support mechanism that rotatably supports the processed gear 20 at the time of mounting.

  The axis crossing angle で あ る, which is the angle between the rotation axis S1 of the polishing body 10 supported by the polishing side support mechanism and the rotation axis S2 of the processed gear 20 supported by the polished side support mechanism, It can be changed and adjusted by one or both of the polishing side support mechanism and the polishing side support mechanism. The inter-axial distance D, which is the distance between the two rotation axes S1 and S2, can also be changed and adjusted by one or both of the polishing side support mechanism and the polishing side support mechanism. Furthermore, the polishing body 10 is displaceable in the axial direction of the rotation axis S1, and the processed gear 20 is displaceable in the axial direction of the rotation axis S2.

  The gear to be processed 20 includes a main body 21 formed in a disk shape so as to have an annular outer peripheral surface formed in a direction (rotational direction) of rotation about the axis of the rotation shaft S2. The teeth 22 are formed on the outer periphery of the main body 21 at equal intervals all around.

  A mounting hole 23 through which the rotation shaft S2 is inserted is bored in the central portion of the disk shape of the main body 21. The processing gear 20 is mounted on the gear processing device using the mounting hole 23.

  The polishing body 10 includes a main body 11 formed in a disk shape so as to have an annular outer peripheral surface formed in a direction (rotational direction) of rotation about the axis of the rotation axis S1. On the outer periphery of the main body 11, teeth 12 meshing with the teeth 22 of the processed gear 20 and having an axis crossing angle 形成 are formed at equal intervals all around the entire periphery.

  A mounting hole 13 for inserting the rotation shaft S1 is formed at a central portion of the disk shape of the main body 11. The polishing body 10 is mounted and fixed to the gear processing device using the mounting hole 13.

  FIG. 2A is an explanatory view for explaining the configuration of the teeth of the polishing body, and FIG. 2B is an explanatory view for explaining the configuration of the teeth of the gear to be processed. The teeth 12 and 22 of the polishing body 10 and the gear to be processed 20 are respectively inclined by twist angles α1 and α2 which are predetermined angles with respect to the rotation axes S1 and S2. In other words, center lines L1 and L2, which are lines passing through the centers of the teeth 12 and 22 in the thickness direction of the teeth or lines parallel thereto, have the twist angles α1 and α2 with respect to the rotation axes S1 and S2. It is only tilted.

  FIG. 3 is an enlarged view of an essential part showing a meshing state of the polishing body and the processing gear. As shown in the drawing, the axis crossing angle α is determined based on the twist angle α1 of the polishing body 10 and the twist angle α2 of the processed gear 20. Specifically, the difference between the two twist angles α1 and α2 is set to the axis crossing angle ψ.

  In the gear processing apparatus configured as described above, the abrading body 10 and the work gear 20 in a meshed state having the axis crossing angle wedge are rotationally operated to contact the meshed teeth 12 and 22 Sliding (sliding) along the tooth width direction is generated between the tooth surfaces 12a and 22a (see FIG. 2), and the tooth surfaces 22a of the teeth 22 of the gear 20 to be processed are polished with high accuracy.

  Further, when the tooth surface 12a is worn by the grinding operation of a large number of the processed gears 20, the polishing body 10 reshapes the tooth surface 12a by dressing. In this case, if only the worn tooth surface 12a is continuously formed, the tooth thickness of the tooth 12 decreases and eventually the tooth 12 is broken.

  In order to delay the reduction of the thickness dimension and extend the life of the polishing body 10, when performing reshaping of the polishing body 10 by dressing, the twist angle α1 of the teeth 12 is gradually changed and reformed . Incidentally, since it is necessary to make the center lines L1 and L2 passing through the tooth surfaces 12a and 22a of the teeth 12 and 22 in mesh with each other coincide with each other, the axis crossing angle ψ is also It will be changed as appropriate. Since this technique is conventionally known, details are omitted.

  FIGS. 4A to 4C are explanatory views sequentially showing the manufacturing process of the polishing body. The main body 11 of the polishing body 10 is configured by laminating a plurality of laminated materials 11a and 11b in the axial direction of the rotation axis S1.

  Specifically, the main body 11 is formed of at least two kinds of laminated materials of a polishing sheet 11 a mainly intended for polishing and a shape retaining sheet 11 b mainly intended for shape retention. The polishing sheet 11a has a polishing function higher than that of the shape retaining sheet 11b and a shape retaining function lower than that of the shape retaining sheet 11b.

  The polishing sheet 11a may be constituted by a highly elastic grindstone sheet such as a resin grindstone, a PVA grindstone, a resinoid grindstone, or a sponge grindstone, or the abrasive grains or grindstone pieces are adhered to the sheet substrate by a binder. It may be configured by. The bonding agent is a kind of adhesive that bonds the abrasive grains or the grinding wheel pieces and adheres the abrasive grains or the grinding wheel pieces to the surface of the sheet substrate, but here, adjacent ones It is used separately from an adhesive whose main purpose is to bond the laminated materials 11a and 11b to each other.

  Specifically, the polishing sheet 11a may be formed of a resinoid grindstone sheet having high elasticity, buffer property, and flexibility, a various resin grindstone sheet, and a rubber grindstone sheet as a binder for wrapping abrasive grains. Further, the polishing sheet 11a may be formed of a grindstone sheet in which abrasive grains are bonded to various resins or various felts. Further, the polishing sheet 11a may be constituted by a polishing cloth. Further, the polishing sheet 11a may be made of an elastic grindstone sheet material not containing abrasive grains. In the case where the elastic grindstone sheet material is insufficient in elasticity, an elastic sheet such as urethane may be overlapped to compensate for the shortage. Incidentally, the bonding strength of the abrasive grains is appropriately adjusted by the selection of the binder and the like. In addition, the type and bonding strength of the abrasive may be set so that lapping polishing with free abrasive can be performed. In addition, paper, PET, felt of food fiber, non-woven fabric, resin, glass fiber, metal or the like may be used as the sheet base material, and an abrasive grain layer or a grindstone layer is adhered to one side of the sheet base material. You may comprise the sheet | seat 11a for grinding | polishing.

  The shape-retaining sheet 11b may be made of a highly rigid grindstone sheet material such as a resin grindstone, a resinoid grindstone, or a vitrified grindstone, or may be made of an adhesive containing abrasive grains. In the shape-retaining sheet 11b, abrasives are used which are finer than the sheet for polishing with emphasis on bonding force, and the polishing force is weakened. The shape retaining sheet 11b may be one having no polishing function.

  For example, a grindstone sheet containing fine abrasive grains and having high bonding degree and rigidity, and a grindstone sheet containing fine abrasive grains and capable of adhering to other laminates 11a and 11b by a binder for bonding the fine abrasive grains. A grindstone sheet formed by bonding fine abrasive grains to a highly rigid sheet substrate such as a resin or metal sheet, a brittle grindstone sheet containing fine abrasive grains and having a high degree of bonding, or containing no abrasive grains and metal, etc. The shape-retaining sheet 11 b may be configured by a sheet of The configuration of the sheet base of the shape-retaining sheet 11b is the same as that of the sheet base of the polishing sheet 11a.

  That is, compared to the shape-retaining sheet 11b, the polishing sheet 11a has high flexibility, elasticity and cushioning property, a large abrasive grain, and a high polishing function, while the sheet base material of the abrasive grains is used. Bond strength is low, overall strength and hardness are low, and shape retention is weak.

  In addition, according to the purpose and object of grinding | polishing, these said laminated materials 11a and 11b select the said sheet | seat base material, a binder, and an abrasive grain, and provide a suitable shape retention and a grinding | polishing function.

  Then, the teeth 12 of the main body 11 are formed by alternately laminating the polishing sheet 11a and the shape-retaining sheet 11b, and bonding adjacent ones of the laminated materials 11a and 11b with an adhesive or the like. The laminated body 11 'which is the state before forming is comprised (refer FIG. 4 (A), (B)).

  In the laminated body 11 ', the outer peripheral edges of the plurality of laminated materials 11a and 11b being overlapped completely coincide with each other over the entire circumference in the axial direction of the rotation axis S1. The polishing body 10 is configured by forming a plurality of the teeth 12 described above on the outer peripheral surface of the laminated body 11 ′ by processing such as dressing with a dress gear or a dress disc (FIG. 4C) reference).

  FIG. 5 is a perspective view showing the configuration of the teeth of the polishing body. A plurality of layers of the teeth 12 of the polishing body 10 are juxtaposed in the direction of the teeth width by the above-described laminated structure of the main body 11. Each layer is formed of either the polishing sheet 11a or the shape holding sheet 11b as shown in the figure.

  According to the polishing body 10 configured as described above, the multilayer structure of the layer of the polishing sheet 11 a and the layer of the shape retaining sheet 11 b alternately arranged in the width direction of the teeth 12 is The same function as the teeth of a shaving cutter is exhibited, and the tooth surface 22a of the processed gear 20 can be polished with high accuracy, and mirror finish polishing equivalent to honing can be performed.

  Moreover, since the polishing body 10 performs polishing by the function of a grinding stone (specifically, abrasive grains), it is possible to perform high-efficiency polishing operation even on the processed gear 20 with high hardness. It is highly versatile.

  In addition, in the ordinary shaving cutter, only the edge portions of the teeth act during cutting work, but since the entire peripheral surface of the polishing sheet 11a and the shape-retaining sheet 11b acts during polishing, the polishing body 10 works. Polishing with high precision is possible even for the processed gear 20 having a wide surface and high hardness.

  Furthermore, while the axis crossing angle ψ is also about 4 to 20 ° at the minimum in the shaving cutter, the polishing body 10 can be freely selected to be around 0 ° to ± 90 ° at the minimum.

  Incidentally, when the whole elastic modulus of the polishing body 10 is high, unintended deformation at the time of molding the teeth 12 is suppressed. On the other hand, when the overall rigidity of the polishing body 10 is high, deformation at the time of polishing the processed gear 20 is suppressed. In order to adjust the polishing ability and the shape-retaining power so that these two requirements are compatible, the polishing sheets 11a and the shape-retaining sheets 11b are alternately arranged in the axial direction of the rotation axis S1.

  In order to increase the rigidity, as the shape-retaining sheet 11b, a grindstone using a binder having finer abrasive grains and higher hardness, or the sheet base such as a resin or metal having higher rigidity is used, and higher than metal plating or the like. A grindstone using a strong binder or a grindstone not containing abrasive grains is used by using only the above-mentioned sheet substrate made of a resin or metal having higher rigidity. However, when the ratio of the part to which the fine abrasives of the tooth surface 12a of the tooth 12 of the polishing body 10 are attached or the part to which the abrasive is not attached is increased, the tooth of the tooth 22 of the processed gear 20 is increased. At the time of polishing in a state of being in contact with the surface 22a, there is a possibility that the adverse effect of heat due to friction may occur. In order to solve this problem, as shown in FIG. 5, it is desirable to set the thickness of the shape-retaining sheet 11b thinner than the thickness of the polishing sheet 11a.

  Further, while the mirror surface finishing and the like of the tooth surface 22a of the processed gear 20 become easy when the elastic force of the laminated materials 11a and 11b is increased, the formation accuracy of the tooth surface 12a of the polishing body 10 itself, The polishing accuracy of the tooth surface 22 a of the gear 20 is reduced. In the present embodiment, the two opposing requirements are met by sandwiching the polishing sheet 11a having high elastic force in the axial direction of the rotation axis S1 by the pair of shape-retaining sheets 11b and 11b having high rigidity. doing.

  In addition, processing close to lapping is performed by mutually arranging the shape-retaining sheet 11b having high rigidity and low bonding strength and the polishing sheet 11a having high elastic force in the axial direction of the rotation axis S1. Is also possible.

  By the way, as described above, in the present embodiment, the thickness of the shape-retaining sheet 11 b is set smaller than that of the polishing sheet 11 a. The shape-retaining sheet 11b is intended to maintain the shape of the gear of the polishing body 10, and it is preferable that the shape-retaining sheet 11b be thin. Essentially, abrasive grains are unnecessary, but finer abrasive grains used for the shape-retaining sheet 11b As a result, it is possible to leave the grinding force on the shape holding sheet 11b to such an extent that the shape of the processed gear 20 is not changed.

  According to the polishing body 10 configured as described above, since the shape retention function of the polishing body 10 is improved by the shape-retaining sheet 11b having high rigidity, the maximum number of rotations of the polishing body 10 can be improved. It becomes possible and can shorten processing time.

  Further, in manufacturing the polishing body 10, since the teeth 12 are formed after bonding the laminated materials 11a and 11b, the process of adhering adjacent ones of the plural laminated materials 11a and 11b with an adhesive is affected. The shape of the tooth 12 can be formed with high accuracy without receiving it. Then, adjacent ones of the plurality of laminated materials 11a and 11b are adhered to each other.

  On the other hand, when the laminated material 11a, 11b is adhered to each other after the teeth 12 are separately formed on each of the laminated materials 11a, 11b to manufacture the polishing body 10, each of the teeth is compared with the above procedure. The formation accuracy of 12 becomes low due to the following reasons.

  One of the reasons is that when the teeth 12 are formed individually on the laminated materials 11a and 11b, processing errors such as pressing, bending, and variations in thickness are caused. The other one is caused by an error in bonding of the laminates 11a and 11b and an accumulation of the error due to the lamination of the laminates 11a and 11b. In particular, during the work of laminating the laminated materials 11a and 11b and bonding adjacent ones, the influence of variations in the bonding position in the rotational direction, the difference in the bonding pressure, and the variation in the thickness of the adhesive are large.

  If the forming accuracy of the teeth 12 of the polishing body 10 is reduced due to such a cause, the reforming of the teeth 12 is also affected, and the accuracy at the time of the reforming is also reduced.

  The size of the shape retaining sheet 11b may be set larger than that of the polishing sheet 11a by setting the sizes of the polishing sheet 11a and the shape retaining sheet 11b in reverse.

  Further, although the layer of the polishing sheet 11a is disposed and formed at both end portions in the tooth width direction of the teeth 12, the layer of the shape retention sheet 11b may be disposed and formed here. Furthermore, the layer of the polishing sheet 11a may be disposed at one end of the teeth 12 in the tooth width direction, and the layer of the shape retention sheet 11b may be disposed at the other end.

  Furthermore, although the polishing sheets 11a and the shape-retaining sheets 11b are alternately arranged on the polishing body 10, the polishing body 10 may be configured of only a plurality of the polishing sheets 11a. More specifically, the above-mentioned polishing sheet 11a is composed of a resinoid grindstone sheet having high elasticity, buffer property and flexibility, various resin grindstone sheets, rubber grindstone sheets, and various resins or various felts. The polishing sheet 11a constituted by a grindstone sheet to which abrasive grains are bonded, the polishing sheet 11a constituted by a polishing cloth, and the polishing sheet constituted by an elastic grindstone sheet material not containing abrasive grains The polishing body 10 may be formed by aligning the members 11a with each other in the axial direction of the rotation axis S1 and bonding them with a strong adhesive. Under the present circumstances, it is good also as the said grinding | polishing body 10 by the effect of adhesive strength and a pile.

  The polishing sheet 11 a and the shape-retaining sheet 11 b may have a difference in the polishing function and the shape-retaining function according to the strength and the function required of the polishing body 10. For this reason, the polishing sheet 11a may be set higher than the shape retaining sheet 11b with respect to the shape retaining function. On the other hand, the polishing sheet 11a may be set lower than the shape-retaining sheet 11b in the polishing function.

  Next, another embodiment of the present invention will be described with reference to FIG.

  FIG. 6 is a perspective view showing the configuration of the teeth of the polishing body according to another embodiment of the present invention. In the embodiment shown in the figure, a reinforcing plate 11c is provided as a laminated material of a type different from the polishing sheet 11a and the shape holding sheet 11b.

  The reinforcing plate 11c is a reinforcing laminate having a strength higher than that of the abrasives 11a and 11b but having almost no polishing function. The strength of the polishing body 10 is enhanced by arranging the reinforcing plate 11 c at an axial end of the rotation axis S 1 of the main body 11.

  Incidentally, even in the case where the reinforcing plate 11c is provided as a laminate constituting the polishing body 10, the laminates 11a, 11b, and 11c are laminated and adhered to form a laminate 11 'as in the above embodiment. The teeth 12 are formed on the outer periphery of the laminate 11 '.

  Further, when the reinforcing plate 11c is disposed at the end of the main body 11 in the axial direction of the rotation axis S1, the layer of the reinforcing plate 11c is formed on the end side of the tooth 11 in the width direction. When the shape of the teeth 12 is formed on the polishing body 10, it is possible to prevent the reduction in the forming accuracy of the teeth 12 due to the axial deflection caused by the force acting in the axial direction of the polishing body 10. Moreover, the molding time of the said tooth 12 can be shortened by this. Furthermore, breakage of the teeth 12 due to poor handling of the polishing body 10 can be prevented.

  Although the reinforcing plate 11c is disposed on one end side of the main body 11 in the axial direction of the rotation axis S1, as shown by phantom lines in FIG. 6, the reinforcing plate 11c is in the axial direction of the rotation axis S1 of the main body 11. They may be provided at both ends and further reinforced. A midway portion in the axial direction of the rotation axis S1 of the main body 11 may be constituted by the reinforcing plate 11c.

  Next, another embodiment of the present invention will be described with reference to FIG.

  FIG. 7 is a perspective view showing the configuration of the teeth of the polishing body according to another embodiment of the present invention. In the form shown in the figure, the main body 11 is configured by alternately laminating a plurality of (specifically, two) the shape-retaining sheets 11b bonded to one another and the one polishing sheet 11a. doing. By increasing the proportion of the shape retaining sheet 11b, the strength of the main body 11 is improved.

  Next, another embodiment of the present invention will be described with reference to FIG.

  (A) and (B) of FIG. 8 are respectively a main part front view and a main part side view of a gear processing apparatus according to another embodiment of the present invention. In the embodiment described above, the polishing operation is performed on the external gear type processed gear 20, and in the embodiment shown in the figure, the internal gear type processed gear 20 in the present embodiment.

  The main body 11 may be formed in a circular ring shape, the teeth 12 may be formed on an annular inner circumferential surface of the main body 11 formed in the rotational direction, and the polishing body 10 may be an internal tooth type.

  Next, another embodiment of the present invention will be described with reference to FIG.

  9 (A) to 9 (C) are a perspective view, a side view and a cross-sectional view of an essential part of a polishing body according to another embodiment of the present invention. The main body 11 of the polishing body 10 is formed in a screw shape. Although the main body 11 is formed into a single thread of screw shape, the main body 11 may be formed into multiple threads of screw shape. A screw thread helically formed on the outer peripheral surface of the main body 11 functions as the teeth 12. In other words, the teeth 12 are spirally formed around the axis of the rotation axis S1.

  The main body 11 is configured by the laminated materials 11a and 11b laminated in the axial direction of the rotation axis S1, as in the above-described embodiment. The polishing sheet 11a, which is the laminated material 11a and 11b, and the shape-retaining sheet 11b are mutually laminated. By the configuration of the main body 11, a plurality of layers are arranged in parallel in the thickness direction of the teeth 12.

  The teeth 12 and 22 are engaged with each other such that the grinding body 10 and the work gear 20 have a vertical attachment angle. In other words, one of the rotation axis S1 vertically penetrating the center of the polishing body 10 and the rotation axis S2 vertically penetrating the center of the processed gear 20 extends in the direction perpendicular to the other. And it is arrange | positioned in the position of a twist.

DESCRIPTION OF SYMBOLS 10 Polishing body 11 main body 11 'laminated body 11a sheet | seat for polishing (laminated material)
11b Shape retention sheet (laminated material)
11c Reinforcement plate (laminated material)
12 Tooth 20 Work gear S1 Rotary shaft

Claims (6)

An abrasive that meshes with a gear to be processed,
It has a gear-shaped or screw-shaped body,
A tooth that meshes with the processed gear is integrally formed on an outer periphery or an inner periphery of the main body,
The main body is composed of a plurality of laminated materials stacked in the axial direction of the rotation axis such that a plurality of layers are arranged in parallel in the tooth width direction or the tooth thickness direction of the teeth;
The polishing body is provided with at least two types of laminate materials having different polishing functions and shape retention functions. The polishing body according to claim 1, wherein at least two types of the laminated materials are alternately arranged in the axial direction of the rotation axis. The polishing body according to any one of claims 1 and 2, wherein the laminated material is formed by attaching abrasive grains or grinding pieces to a sheet base. The polishing body according to any one of claims 1 to 3, wherein at least one of the laminated members is a reinforcing plate having a strength higher than that of the other laminated members. The polishing body according to claim 4, wherein the reinforcing plate is disposed at one end or both ends of the main body. It is a laminated body before the tooth formation of the grinding | polishing body in any one of Claims 1 thru | or 5, Comprising:
And a plurality of the laminated materials for laminating and bonding adjacent ones,
The laminate according to any one of the plurality of laminates, wherein circular peripheral edges are aligned over the entire circumference in the axial direction of the rotation axis.

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