Fixture for gear grinding of new energy speed reducer with high-precision tooth part

Abstract

The utility model belongs to the technical field of gear grinding machining clamps, and particularly relates to a clamp for grinding a gear of a new energy speed reducer with a high-precision tooth part. The gear fixing piece is inserted into the positioning hole, and a gear placing position is formed on the periphery of the gear fixing piece; the gasket assembly is arranged in an annular gasket mounting position arranged at the upper part of the clamp body in a sleeving manner; after the gear is arranged at the gear placing position in a sleeving manner, the gear is supported by the gasket assembly; the gasket assembly is arranged, the supporting base and the floating gasket are additionally arranged between the lower end face of the gear and the clamp body, the hard supporting base is used for supporting the lower end face of the gear, and when the lower end face of the gear is uneven, a gap exists between the supporting base and the clamp body after the supporting base is attached to the lower end face of the gear; the floating gasket fills a gap between the supporting seat and the clamp body so as to improve the supporting rigidity of the lower end face of the gear.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear grinding fixtures, and in particular relates to a fixture for grinding gears of a new energy reducer with high-precision teeth. Background Art

[0002] When the existing fixture scheme is working, a vertical rod is fixed on the gear to be processed, the fixture base is fixed to the machine tool spindle by bolts, and the fixture cone is fixedly connected to the fixture base by bolts. When working, the piston cylinder pushes the elastic chuck to move up and down, so that the inner diameter of the elastic chuck becomes smaller, thereby achieving the action of clamping the vertical rod, thereby keeping the gear still; during processing, the grinding wheel approaches the workpiece for grinding, thereby completing the product processing.

[0003] However, in this processing scheme, there is no support for the lower end surface of the gear to be processed. When the gear is ground, the grinding wheel will cause the gear to tilt during the vertical tooth cutting process, resulting in unstable accuracy of the ground gear teeth.

[0004] Therefore, a fixture for grinding gears of new energy reducer with high tooth precision is designed to solve the technical problem in the prior art that the lower end face of the gear lacks support during the machining process. Utility Model Content

[0005] The utility model aims to provide a fixture for grinding gears of a new energy reducer with high-precision teeth, so as to solve the above-mentioned technical problems.

[0006] In order to solve the above technical problems, the utility model provides a high-precision new energy reducer gear grinding fixture, comprising:

[0007] A clamp body, the upper portion of which is provided with a positioning hole; and

[0008] A gear fixing member is inserted into the positioning hole and the periphery of the gear fixing member forms a gear placement position; and

[0009] A gasket assembly, which is sleeved in an annular gasket installation position arranged on the upper part of the clamp body;

[0010] After the gear is sleeved on the gear placement position, the gear is supported by the spacer assembly.

[0011] Further, the gasket assembly comprises:

[0012] At least one annular support seat is sleeved in the annular gasket installation position; wherein

[0013] The upper end surface of the annular support seat is in contact with the lower end surface of the gear; and

[0014] At least one floating gasket is arranged between the lower end surface of the annular support seat and the clamp body; wherein

[0015] The floating gasket is suitable for filling the gap between the annular support seat and the clamp body when the upper end surface of the annular support seat is in contact with the lower end surface of the gear.

[0016] Furthermore, the outer diameters of the annular support seat and the floating gasket are both smaller than the outer diameter of the gear.

[0017] Furthermore, a sliding chamber is provided inside the clamp body;

[0018] The sliding chamber is in an inverted T-shape, the vertical portion of the sliding chamber is connected to the positioning hole, and the cross-section of the inner wall of the top end of the positioning hole is an inverted trapezoid;

[0019] A T-shaped piston is disposed in the sliding chamber and is slidably connected to the inner wall of the sliding chamber; and

[0020] The fastening assembly is arranged on the vertical portion of the T-shaped piston and is used to connect the vertical portion of the T-shaped piston and the lower portion of the gear fixing member.

[0021] Further, the fastening assembly comprises:

[0022] The connecting piece is divided into an upper half and a lower half; wherein

[0023] The lower half of the connecting piece is threadedly connected to the vertical portion of the T-shaped piston; and

[0024] A plurality of contraction grooves are provided on the outer wall of the upper half of the connecting piece to divide the upper half of the connecting piece into a plurality of clamping parts;

[0025] The lower part of the gear fixing member is suitable for being inserted into the upper part of the connecting member, and during the sliding process of the T-shaped piston, the lower part of the connecting member is driven to move, thereby driving the upper part of the connecting member to contract to clamp the lower part of the gear fixing member.

[0026] Furthermore, the top end wall thickness of each clamping portion is greater than the bottom end wall thickness thereof.

[0027] Furthermore, a gap is provided between the upper end surface of the horizontal portion of the sliding chamber and the upper end surface of the horizontal portion of the T-shaped piston, namely, a hydraulic chamber;

[0028] The clamp body is provided with an oil circuit;

[0029] The oil outlet end of the oil circuit is connected to the hydraulic chamber.

[0030] Furthermore, an oil tank is provided on one side of the clamp body;

[0031] The output end of the oil tank is connected to the oil inlet end of the oil circuit so that the hydraulic oil inside the oil tank is pumped into the hydraulic cavity through the oil circuit, thereby pushing the T-shaped piston to move downward in the sliding chamber.

[0032] The beneficial effect of the utility model is that, by providing a gasket assembly, a support seat and a floating gasket are added between the lower end face of the gear and the clamp body, and the hard support seat is used to support the lower end face of the gear. When the lower end face of the gear is uneven, there will be a gap between the support seat and the clamp body after the lower end face of the gear is fitted. The floating gasket is used to fill the gap between the support seat and the clamp body to improve the support stiffness of the lower end face of the gear.

[0033] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0037] Figure 2 It is a schematic cross-sectional structural diagram of the clamp body of the utility model;

[0038] Figure 3 It is a schematic cross-sectional structure diagram of the fastening assembly of the utility model;

[0039] Figure 4 It is a three-dimensional structural schematic diagram of the connecting piece of the utility model.

[0040] In the figure:

[0041] 1. Clamping body; 2. Gear fixing part; 20. Gear; 3. Annular support seat; 4. Floating gasket; 5. Sliding chamber; 6. T-type piston; 8. Connecting part; 80. Clamping part; 81. Contraction groove; 9. Hydraulic chamber; 10. Oil circuit; 11. Positioning hole. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] When the existing fixture scheme is working, a vertical rod is fixed on the gear to be processed, the fixture base is fixed to the machine tool spindle by bolts, and the fixture cone is fixedly connected to the fixture base by bolts. When working, the piston cylinder pushes the elastic collet to move up and down, so that the inner diameter of the elastic collet becomes smaller, thereby achieving the action of clamping the vertical rod, thereby keeping the gear still; during processing, the grinding wheel approaches the workpiece for grinding, thereby completing the product processing. However, in this processing scheme, there is no support for the lower end face of the gear to be processed. When grinding the gear, the grinding wheel will cause the gear to tilt during the process of vertical tooth opening, thereby resulting in unstable accuracy of the ground gear tooth portion.

[0044] In order to solve the above technical problems, in at least one embodiment, a clamp for high-precision new energy reducer gear grinding is provided, including: a clamp body 1, a positioning hole 11 is arranged on the upper part of the clamp body; and a gear fixing part 2, which is inserted into the positioning hole 11 and the periphery of the gear fixing part 2 forms a gear placement position; and a gasket assembly, which is sleeved in the annular gasket installation position arranged on the upper part of the clamp body 1; after the gear 20 is sleeved in the gear placement position, the gear 20 is supported by the gasket assembly.

[0045] By providing a gasket assembly, a support seat 3 and a floating gasket 4 are added between the lower end surface of the gear 20 and the clamp body 1, and the hard support seat 3 is used to support the lower end surface of the gear 20. When the lower end surface of the gear 20 is uneven, there will be a gap between the support seat 3 and the clamp body 1 after the lower end surface of the gear 20 is fitted. The floating gasket 4 is used to fill the gap between the support seat 3 and the clamp body 1 to increase the support stiffness of the lower end surface of the gear 20.

[0046] In some embodiments, the gear fixing member 2 is passed through the center of the gear 20 along the axial direction of the gear 20 and fixed to the gear 20, and then the lower part of the gear fixing member 2 is inserted into the positioning hole 11 opened on the upper part of the clamp body 1. At this time, the lower end surface of the gear 20 is located above the annular gasket installation position, and the upper end surface of the annular support seat 3 is fitted with the lower end surface of the gear 20. If the lower end surface of the gear 20 is uneven and has an inclined surface, a gap is generated between the annular support seat 3 and the inclined surface of the gear 20 and the clamp body 1 after fitting. The floating gasket 4 placed between the annular support seat 3 and the clamp body 1 is used to compensate for the gap, thereby improving the support stiffness of the annular support seat 3 on the lower end surface of the gear 20, thereby preventing the gear 20 from being tilted by the grinding wheel during the gear grinding process, resulting in unstable accuracy of the ground gear teeth.

[0047] In some embodiments, when the lower portion of the gear fixing member 2 is inserted into the positioning hole 11 opened in the upper portion of the clamp body 1, the connecting member 8 is located at the top end of the positioning hole 11, and the lower portion of the gear fixing member 2 is inserted into the interior of the connecting member 8. When the connecting member 8 moves downward, since the top wall thickness of each clamping portion 80 is greater than the bottom wall thickness, and the cross-section of the top inner wall of the positioning hole 11 is an inverted trapezoid, the upper half of the connecting member 8 (i.e., each clamping portion 80) is gradually squeezed and contracted by the top inner wall of the positioning hole 11 during the downward movement, and the gap of the contraction groove 81 is reduced, thereby achieving tight clamping of the bottom of the gear fixing member 2. In order to avoid debris getting stuck in the contraction groove 81 during the processing, as a preferred embodiment, elastic rubber can be filled in the contraction groove 81. This can prevent debris from entering during the gear grinding process and will not affect the contraction of each clamping portion 80.

[0048] In some embodiments, the output end of the oil tank is connected to the oil inlet end of the oil circuit (the oil tank and the oil pump are not shown in the figure), and the oil pump is used to pump the hydraulic oil into the hydraulic chamber 9 through the oil circuit, and the hydraulic oil is used to push the T-type piston 6 to slide downward in the sliding chamber 5, and the bottom of the connecting member 8 and the vertical part of the T-type piston 6 are connected by threads (the bottom outer wall of the connecting member 8 is provided with an external thread, and the top center of the vertical part of the T-type piston 6 is recessed, and an internal thread is provided on the inner wall of the recessed part to connect the two), so as the T-type piston 6 moves downward, the connecting member 8 is driven to move downward to tightly clamp the bottom of the gear fixing member 2.

[0049] As another embodiment, the clamp body 1 can be divided into two parts: a clamp base and a clamp cone. The clamp base is fixed to the machine tool spindle by bolts, and the clamp cone is fixedly connected to the clamp base by bolts, and a limit rod is vertically fixed in the center of the clamp base. The limit rod passes through the vertical part of the T-type piston and extends into the clamp cone to guide the sliding direction of the T-type piston. The bottom center of the clamp cone is recessed to form an inverted T-shaped sliding chamber between the upper end surface of the clamp base, and a sealing ring is used to seal the horizontal outer wall of the T-type piston and the horizontal inner wall of the sliding chamber, and a sealing ring is used to seal the vertical outer wall of the T-type piston and the horizontal inner wall of the sliding chamber to avoid leakage of hydraulic oil.

[0050] To summarize, by providing a gasket assembly, a support seat and a floating gasket are added between the lower end face of the gear and the clamp body, and a hard support seat is used to support the lower end face of the gear. When the lower end face of the gear is uneven, there will be a gap between the support seat and the clamp body after the lower end face of the gear is fitted. The floating gasket is used to fill the gap between the support seat and the clamp body to increase the support stiffness of the lower end face of the gear.

[0051] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0053] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A high-precision new energy reducer gear grinding fixture, characterized in that: include: A clamp body, the upper part of which is provided with a positioning hole; and A gear fixing piece is inserted into the positioning hole and the periphery of the gear fixing piece forms a gear placement position; as well as A gasket assembly, which is sleeved in an annular gasket installation position arranged on the upper part of the clamp body; After the gear is sleeved on the gear placement position, the gear is supported by the spacer assembly.

2. The clamp according to claim 1, characterized in that The gasket assembly comprises: At least one annular support seat is sleeved in the annular gasket installation position; wherein The upper end surface of the annular support seat is in contact with the lower end surface of the gear; and At least one floating gasket is arranged between the lower end surface of the annular support seat and the clamp body; wherein The floating gasket is suitable for filling the gap between the annular support seat and the clamp body when the upper end surface of the annular support seat is in contact with the lower end surface of the gear.

3. The clamp according to claim 2, characterized in that The outer diameters of the annular support seat and the floating gasket are both smaller than the outer diameter of the gear.

4. The clamp according to claim 3, characterized in that The interior of the clamp body is provided with a sliding chamber; The sliding chamber is in an inverted T-shape, the vertical portion of the sliding chamber is connected to the positioning hole, and the cross-section of the inner wall of the top end of the positioning hole is an inverted trapezoid; A T-shaped piston is disposed in the sliding chamber and is slidably connected to the inner wall of the sliding chamber; as well as The fastening assembly is arranged on the vertical portion of the T-shaped piston and is used to connect the vertical portion of the T-shaped piston and the lower portion of the gear fixing member.

5. The clamp according to claim 4, characterized in that The fastening assembly comprises: The connecting piece is divided into an upper half and a lower half; wherein The lower half of the connecting piece is threadedly connected to the vertical portion of the T-shaped piston; and A plurality of contraction grooves are provided on the outer wall of the upper half of the connecting piece to divide the upper half of the connecting piece into a plurality of clamping parts; The lower part of the gear fixing member is suitable for being inserted into the upper part of the connecting member, and during the sliding process of the T-shaped piston, the lower part of the connecting member is driven to move, thereby driving the upper part of the connecting member to contract to clamp the lower part of the gear fixing member.

6. The clamp according to claim 5, characterized in that The top end wall thickness of each clamping portion is greater than the bottom end wall thickness thereof.

7. The clamp according to claim 6, characterized in that A gap is provided between the upper end surface of the horizontal part of the sliding chamber and the upper end surface of the horizontal part of the T-shaped piston, namely, a hydraulic chamber; The clamp body is provided with an oil circuit; The oil outlet end of the oil circuit is connected to the hydraulic chamber.

8. The clamp according to claim 7, characterized in that An oil tank is provided on one side of the clamp body; The output end of the oil tank is connected to the oil inlet end of the oil circuit so that the hydraulic oil inside the oil tank is pumped into the hydraulic cavity through the oil circuit, thereby pushing the T-shaped piston to move downward in the sliding chamber.

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