Miniature transmission shaft grinding wheel

Abstract

The utility model provides a micro transmission shaft grinding wheel which comprises a supporting and assembling component, an inner side switching component, an outer side switching component, an end limiting component, a grinding bearing component and a grinding covering component, and the inner side switching component and the outer side switching component are used for jointly positioning the supporting and assembling component. The stability and accuracy of the grinding wheel in the grinding process are ensured, reduction of the grinding accuracy caused by vibration or shaking is avoided, the grinding wheel is stably limited on the driving rotating shaft through the design of the end limiting component, displacement or deviation of the grinding wheel in the grinding process is prevented, and therefore the continuity and stability of the grinding process are ensured, and the grinding efficiency is improved. The combined design of the bearing conical edge and the bearing notch is adopted for the grinding bearing component, the weak portion of the edge of the grinding shell layer is protected, cracking caused by collision in the grinding process is avoided, and due to the improvement measures, the grinding efficiency and quality are improved, and the service life of the grinding wheel is prolonged.

Description

Technical Field

[0001] The utility model relates to a metal-based composite material, in particular to a micro transmission shaft grinding wheel. Background Art

[0002] Patent document CN203156581U discloses a grinding wheel, which can be used for grinding micro transmission shafts, and includes a grinding wheel base body extending axially in the front-to-back direction, and at least two arc-shaped grinding blocks made of superhard material are evenly spaced on the outer peripheral surface of the grinding wheel base body, and the opposite end surfaces of the two adjacent arc-shaped grinding blocks and the corresponding outer peripheral surface of the grinding wheel base body form a chip removal groove that penetrates the front and rear end surfaces of the grinding wheel in the front-to-back direction, and the grinding layer is composed of at least two arc-shaped grinding blocks evenly spaced on the outer peripheral surface of the grinding wheel base body, and the opposite end surfaces of the two adjacent arc-shaped grinding blocks and the grinding wheel base body form a chip removal groove that penetrates the front and rear end surfaces of the grinding wheel in the front-to-back direction. The corresponding peripheral surfaces of the base body are surrounded by a chip groove that runs through the front and rear end surfaces of the grinding wheel in the front-to-back direction. The slag generated by the grinding wheel grinding the workpiece can be discharged through the chip groove and will not fly around in the air. The chip groove can also increase the heat dissipation effect of each arc-shaped grinding block, thereby improving the grinding efficiency. The two adjacent arc-shaped grinding blocks are arranged at intervals, so there is no need to assemble and bond the arc-shaped grinding blocks together, which reduces the assembly time of the grinding layer and improves the manufacturing efficiency of the grinding wheel. Each arc-shaped grinding block is made of superhard material and is more suitable for processing workpieces made of high-hardness materials such as cemented carbide. However, the edge of its grinding layer is exposed outside the grinding wheel base body, and the structure of this part is relatively weak, which is easy to collide with slag or other parts during operation, causing cracking, further affecting the structural strength and grinding performance of the grinding part. Therefore, it is necessary to optimize the structure of this grinding wheel to overcome the above-mentioned defects. Utility Model Content

[0003] The utility model aims to provide a micro transmission shaft grinding wheel to improve its grinding performance.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A micro transmission shaft grinding wheel, comprising:

[0006] A support assembly member having an assembly space therein;

[0007] An inner transfer member, the inner transfer member is formed in the support assembly member, and the inner portion of the support assembly member can be engaged with the drive shaft through the inner transfer member;

[0008] An outer transfer member, which is formed in the support assembly member and corresponds to the position of the inner transfer member. The outer portion of the support assembly member can be engaged with the drive shaft through the outer transfer member. The outer transfer member and the inner transfer member jointly position the support assembly member so that the support assembly member can rotate together with the drive shaft.

[0009] An end limiting member is formed in the supporting assembly member and corresponds to the position of the inner transition member and the outer transition member, and the end limiting member limits the end of the supporting assembly member;

[0010] A grinding bearing member, which is formed in the outer transition member and can rotate together with the outer transition member, and has a bearing space inside;

[0011] The grinding cover component is formed in the grinding bearing component and can rotate together with the grinding bearing component to grind the transmission shaft.

[0012] The supporting assembly components include:

[0013] The supporting cylinder shell is made of a metal cylinder, and a mounting shaft hole is provided in the middle thereof. The mounting shaft hole extends along the axial direction of the supporting cylinder shell and passes through both ends of the supporting cylinder shell.

[0014] The inner transition member includes:

[0015] An inner boss is formed on the inner wall of the support shell, extends along the circumference of the support shell, and protrudes radially toward the inner side of the support shell;

[0016] A set of adapter inner holes are provided, each adapter inner hole respectively penetrates the two ends of the inner boss along the axial direction and is arranged sequentially along the circumference of the inner boss. The inner boss can be fixed to the driving shaft by connecting bolts adapted thereto.

[0017] The outer transition member includes:

[0018] An outer boss is formed on the outer wall of the support shell, extends along the circumference of the support shell, and protrudes radially toward the outside of the support shell;

[0019] The adapter outer hole is provided with a group, each adapter outer hole respectively penetrates the two ends of the outer boss along the axial direction, and is arranged in sequence along the circumference of the outer boss. The outer boss can be fixed to the driving shaft by connecting bolts adapted thereto.

[0020] The end limiting member comprises:

[0021] An inner end flange is formed at the inner end of the supporting cylinder shell, extends along the circumference of the supporting cylinder shell, and protrudes axially toward the side of the supporting cylinder shell, and can be matched with the inner end limit groove of the driving shaft;

[0022] The outer end flange is formed at the outer end of the supporting cylinder shell, extends along the circumference of the supporting cylinder shell, and protrudes axially toward the side of the supporting cylinder shell. It can cooperate with the outer end limiting groove of the driving shaft, and the two ends of the supporting cylinder shell are limited by the outer end flange and the inner end flange.

[0023] The grinding load-bearing component comprises:

[0024] A load-bearing tapered edge, which is formed on the outer wall of the outer boss, extends along the circumference of the outer boss, and protrudes radially toward the outer side of the outer boss, and has a conical cross section;

[0025] A pair of load-bearing recesses are provided, each of which is formed on the outer wall of the outer boss, extends along the circumference of the outer boss, and is recessed radially toward the inner side of the outer boss. The load-bearing recesses are arranged at both ends of the load-bearing cone edge and are connected to the surfaces on both sides of the load-bearing cone edge.

[0026] The grinding cover component comprises:

[0027] The grinding shell layer is made of cubic boron nitride particles, which are attached to the surfaces on both sides of the load-bearing cone edge and extend into the load-bearing recess. When the load-bearing cone edge rotates, the transmission shaft is ground by the grinding shell layer. The edges on both sides of the grinding shell layer extend into the load-bearing recess, so that the grinding shell layer and the load-bearing cone edge can be tightly combined to protect the weak parts of the edge of the grinding shell layer to avoid collision and cracking during the grinding process.

[0028] The advantages of the utility model are:

[0029] The grinding wheel adopts an inner transfer component and an outer transfer component to jointly position the supporting assembly component, thereby ensuring the stability and accuracy of the grinding wheel during the grinding process and avoiding the reduction of grinding accuracy due to vibration or shaking. Through the design of the end limiting component, the grinding wheel is stably limited on the driving shaft to prevent the displacement or offset of the grinding wheel during the grinding process, thereby ensuring the continuity and stability of the grinding process. The grinding bearing component adopts a combination design of a bearing cone edge and a bearing recess to protect the weak parts of the edge of the grinding shell layer and avoid collision and cracking during the grinding process. These improvement measures not only improve the grinding efficiency and quality, but also extend the service life of the grinding wheel, providing a more reliable and efficient tool for the manufacture and processing of the drive shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the micro transmission shaft grinding wheel proposed by the utility model;

[0031] Figure 2 It is a schematic diagram of the cross-sectional structure of the grinding wheel. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0033] like Figure 1 , Figure 2 As shown, the micro transmission shaft grinding wheel proposed by the utility model includes a supporting assembly component, an inner transfer component, an outer transfer component, an end limit component, a grinding bearing component and a grinding cover component. The supporting assembly component has an assembly space, the inner transfer component is formed in the supporting assembly component, and the inner part of the supporting assembly component can be engaged with the driving shaft through the inner transfer component. The outer transfer component is formed in the supporting assembly component and corresponds to the position of the inner transfer component. The outer part of the supporting assembly component can be engaged with the driving shaft through the outer transfer component. The transfer component and the inner transfer component jointly position the supporting assembly component so that the supporting assembly component can rotate together with the driving shaft. The end limiting component is formed in the supporting assembly component and corresponds to the position of the inner transfer component and the outer transfer component. The end of the supporting assembly component is limited by the end limiting component. The grinding bearing component is formed in the outer transfer component and can rotate together with the outer transfer component. It has a bearing space inside. The grinding cover component is formed in the grinding bearing component and can rotate together with the grinding bearing component to grind the transmission shaft.

[0034] In Example 1, the support assembly component includes a support cylinder shell 100, which is made of a metal cylinder and has an assembly shaft hole in the middle. The assembly shaft hole extends along the axial direction of the support cylinder shell and passes through both ends of the support cylinder shell.

[0035] The inner transfer component includes an inner boss 210 and a transfer inner hole 220. The inner boss is formed on the inner wall of the supporting cylinder shell, extends along the circumference of the supporting cylinder shell, and protrudes radially toward the inner side of the supporting cylinder shell. A group of transfer inner holes are provided, each of which passes through the two ends of the inner boss axially and is arranged sequentially along the circumference of the inner boss. The inner boss can be fixed to the driving shaft by connecting bolts adapted thereto.

[0036] The outer transfer component includes an outer boss 310 and a transfer outer hole 320. The outer boss is formed on the outer wall of the supporting cylinder shell, extends along the circumference of the supporting cylinder shell, and protrudes radially toward the outside of the supporting cylinder shell. A group of transfer outer holes are provided, and each transfer outer hole axially penetrates both ends of the outer boss and is arranged sequentially along the circumference of the outer boss. The outer boss can be fixed to the driving shaft by a connecting bolt that is compatible with it.

[0037] The end limiting member includes an inner end flange 410 and an outer end flange 420. The inner end flange is formed at the inner end of the supporting cylinder shell, extends along the circumference of the supporting cylinder shell, and protrudes axially toward the side of the supporting cylinder shell, and can be matched with the inner end limiting groove of the driving shaft. The outer end flange is formed at the outer end of the supporting cylinder shell, extends along the circumference of the supporting cylinder shell, and protrudes axially toward the side of the supporting cylinder shell, and can be matched with the outer end limiting groove of the driving shaft. The two ends of the supporting cylinder shell are limited by the outer end flange and the inner end flange.

[0038] The grinding bearing component includes a bearing cone 510 and a bearing recess 520. The bearing cone is formed on the outer wall of the outer boss, extends along the circumference of the outer boss, and protrudes radially toward the outside of the outer boss. Its cross section is conical. A pair of bearing recesses are provided, each of which is formed on the outer wall of the outer boss, extends along the circumference of the outer boss, and is recessed radially toward the inside of the outer boss. The bearing recesses are arranged at both ends of the bearing cone and connected with the surfaces on both sides of the bearing cone.

[0039] The grinding cover component includes a grinding shell layer 600, which is made of cubic boron nitride particles, attached to the surfaces on both sides of the load-bearing cone edge and extended into the load-bearing recess. When the load-bearing cone edge rotates, the grinding shell layer grinds the transmission shaft, and the edges on both sides of the grinding shell layer extend into the load-bearing recess, so that the grinding shell layer and the load-bearing cone edge can be tightly combined to protect the weak parts of the edge of the grinding shell layer to avoid collision and cracking during the grinding process.

[0040] In Embodiment 2, the supporting assembly component includes a supporting cylinder shell 100, which is made of a metal cylinder and has an assembly shaft hole in the middle thereof. The assembly shaft hole extends along the axial direction of the supporting cylinder shell and passes through both ends of the supporting cylinder shell.

[0041] The inner transfer component includes an inner boss 210 and a transfer inner hole 220. The inner boss is formed on the inner wall of the supporting cylinder shell, extends along the circumference of the supporting cylinder shell, and protrudes radially toward the inner side of the supporting cylinder shell. A group of transfer inner holes are provided, each of which passes through the two ends of the inner boss axially and is arranged sequentially along the circumference of the inner boss. The inner boss can be fixed to the driving shaft by connecting bolts adapted thereto.

[0042] The outer transfer component includes an outer boss 310 and a transfer outer hole 320. The outer boss is formed on the outer wall of the supporting cylinder shell, extends along the circumference of the supporting cylinder shell, and protrudes radially toward the outside of the supporting cylinder shell. A group of transfer outer holes are provided, and each transfer outer hole axially penetrates both ends of the outer boss and is arranged sequentially along the circumference of the outer boss. The outer boss can be fixed to the driving shaft by a connecting bolt that is compatible with it.

[0043] The end limiting member includes an inner end flange 410 and an outer end flange 420. The inner end flange is formed at the inner end of the supporting cylinder shell, extends along the circumference of the supporting cylinder shell, and protrudes axially toward the side of the supporting cylinder shell, and can be matched with the inner end limiting groove of the driving shaft. The outer end flange is formed at the outer end of the supporting cylinder shell, extends along the circumference of the supporting cylinder shell, and protrudes axially toward the side of the supporting cylinder shell, and can be matched with the outer end limiting groove of the driving shaft. The two ends of the supporting cylinder shell are limited by the outer end flange and the inner end flange.

[0044] The grinding bearing component includes a bearing cone 510 and a bearing recess 520. The bearing cone is formed on the outer wall of the outer boss, extends along the circumference of the outer boss, and protrudes radially toward the outside of the outer boss. Its cross section is conical. A pair of bearing recesses are provided, each of which is formed on the outer wall of the outer boss, extends along the circumference of the outer boss, and is recessed radially toward the inside of the outer boss. The bearing recesses are arranged at both ends of the bearing cone and connected with the surfaces on both sides of the bearing cone.

[0045] In this embodiment, guide annular grooves are provided on both side surfaces of the load-bearing cone edge. The guide annular grooves extend along the circumference of the load-bearing cone edge and are recessed toward the inner side of the load-bearing cone edge. The cross section of the guide annular grooves is arc-shaped.

[0046] The grinding cover component includes a grinding shell layer 600, which is made of cubic boron nitride particles, attached to the surfaces on both sides of the load-bearing cone edge and extended into the load-bearing recess. When the load-bearing cone edge rotates, the grinding shell layer grinds the transmission shaft, and the edges on both sides of the grinding shell layer extend into the load-bearing recess, so that the grinding shell layer and the load-bearing cone edge can be tightly combined to protect the weak parts of the edge of the grinding shell layer to avoid collision and cracking during the grinding process.

[0047] In this embodiment, the grinding shell layer is recessed inward at the guide ring groove, so that a gap is formed between it and the grinding surface, which facilitates the discharge of grinding fluid and slag formed in the grinding process.

[0048] In the description of the present utility model, it should be noted that when terms such as "upper", "lower", "inner", "outer", "left", "right" and the like indicating orientation or positional relationship appear, it should be understood that the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, when terms such as "first" and "second" appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "setting", and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A micro transmission shaft grinding wheel, characterized in that: include: A support assembly member having an assembly space therein; An inner transfer member, the inner transfer member is formed in the support assembly member, and the inner portion of the support assembly member can be engaged with the drive shaft through the inner transfer member; An outer transfer member, which is formed in the support assembly member and corresponds to the position of the inner transfer member. The outer portion of the support assembly member can be engaged with the drive shaft through the outer transfer member. The outer transfer member and the inner transfer member jointly position the support assembly member so that the support assembly member can rotate together with the drive shaft. An end limiting member is formed in the supporting assembly member and corresponds to the position of the inner transition member and the outer transition member, and the end limiting member limits the end of the supporting assembly member; A grinding bearing member, which is formed in the outer transition member and can rotate together with the outer transition member, and has a bearing space inside; The grinding cover component is formed in the grinding bearing component and can rotate together with the grinding bearing component to grind the transmission shaft.

2. A micro transmission shaft grinding wheel according to claim 1, characterized in that: The supporting assembly components include: The supporting cylinder shell is made of a metal cylinder, and a mounting shaft hole is provided in the middle thereof. The mounting shaft hole extends along the axial direction of the supporting cylinder shell and passes through both ends of the supporting cylinder shell.

3. A micro transmission shaft grinding wheel according to claim 2, characterized in that: The inner transition member includes: An inner boss is formed on the inner wall of the support shell, extends along the circumferential direction of the support shell, and protrudes radially toward the inner side of the support shell; A group of transition inner holes are provided, each of which penetrates through two ends of the inner boss along the axial direction and is arranged in sequence along the circumferential direction of the inner boss.

4. A micro transmission shaft grinding wheel according to claim 3, characterized in that: The outer transition member includes: An outer boss is formed on the outer wall of the support shell, extends along the circumference of the support shell, and protrudes radially toward the outside of the support shell; The transfer outer holes are provided in a group, each transfer outer hole respectively penetrates through the two ends of the outer boss along the axial direction, and is arranged in sequence along the circumferential direction of the outer boss.

5. A micro transmission shaft grinding wheel according to claim 4, characterized in that: The end limiting member comprises: An inner end flange is formed at the inner end of the support cylinder shell, extends along the circumference of the support cylinder shell, and protrudes toward the side of the support cylinder shell in the axial direction; The outer end flange is formed at the outer end of the supporting cylinder shell, extends along the circumferential direction of the supporting cylinder shell, and protrudes toward the side of the supporting cylinder shell in the axial direction.

6. A micro transmission shaft grinding wheel according to claim 5, characterized in that: The grinding load-bearing component comprises: A load-bearing tapered edge, which is formed on the outer wall of the outer boss, extends along the circumference of the outer boss, and protrudes radially toward the outer side of the outer boss, and has a conical cross section; A pair of load-bearing recesses are provided, each of which is formed on the outer wall of the outer boss, extends along the circumference of the outer boss, and is recessed radially toward the inner side of the outer boss. The load-bearing recesses are arranged at both ends of the load-bearing cone edge and are connected to the surfaces on both sides of the load-bearing cone edge.

7. A micro transmission shaft grinding wheel according to claim 6, characterized in that: The grinding cover component comprises: The grinding shell layer is made of cubic boron nitride particles, which is attached to the surfaces of both sides of the bearing cone edge and extends into the bearing recess.

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