Four-tooth blind hole input shaft finish turning rod body tool

Abstract

The utility model provides a four-tooth blind hole input shaft finish turning rod body tool, and belongs to the technical field of automobile manufacturing. The four-tooth blind hole input shaft finish turning rod body tool comprises a transmission shaft end face body, the surface of the transmission shaft end face body is provided with an arc-shaped sleeve plate, the surface of the arc-shaped sleeve plate makes contact with a fixing plate, the surface of the fixing plate makes contact with a circular bottom plate, an inner cavity of the arc-shaped sleeve plate is provided with a first center connecting column, and an inner cavity of the fixing plate is provided with a rubber connecting disc. A rubber chuck is arranged on the surface of the circular bottom plate in a penetrating mode, a middle plate is arranged on the side, opposite to the rubber connecting disc, of the rubber chuck, a second center connecting column is arranged on one side of the rubber connecting disc, and a connecting shaft is arranged on the surface of the circular bottom plate in a penetrating mode. The machining efficiency and precision of the four-tooth blind hole input shaft are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile manufacturing and relates to a tool, in particular to a tool for finishing a rod body of a four-tooth blind hole input shaft. Background Art

[0002] The function of the input shaft is to transmit the power of the engine to the input shaft of the gearbox, and then to the output shaft of the gearbox through the gears of each gear of the gearbox, and then to the wheels. The input shaft adopts an end face tooth structure connection, which improves the connection reliability, transmits large torque, and is suitable for high-speed operation.

[0003] For example, Chinese patent literature discloses a four-hole positioning tooth drawing tooling structure for the end face teeth of a transmission shaft [application number: 201710315949.4; application publication number: CN106925847A], which includes a transmission shaft end face body, an arc-shaped sleeve, a circular base plate, a central connecting column, a fixed column, a positioning pillar, a semicircular groove and a socket, wherein the arc-shaped sleeve is sleeved on the upper and lower ends of the transmission shaft end face body; a central connecting column is fixedly connected to the middle of the circular base plate, and a fixed column and a positioning pillar are provided on the upper and lower sides of the central connecting column; the central connecting column, the fixed column and the positioning pillar are all welded to the same side of the circular base plate, and the fixed column is embedded in the inner side of the semicircular groove; the semicircular groove is arranged at the top end of the arc-shaped sleeve, and the socket is opened on the back side of the arc-shaped sleeve.

[0004] The above-mentioned transmission shaft end face tooth four-hole positioning tooth drawing tooling structure can improve the overall stability, but the tooling tooth positioning is a metal structure, the positioning is a rigid positioning, and the fixture life is short; at the same time, the positioning surface and the product are in point contact or line contact. When there are differences in product sizes, it is easy to cause positioning deviation, and the product after processing will run out of tolerance. The tooling adopts a forward-push axial length positioning, which is easy to cause inaccurate positioning length. Utility Model Content

[0005] The purpose of the utility model is to provide a four-tooth blind hole input shaft precision turning tooling, which has the advantage that the deformation of the fixture can be flexibly adjusted according to the product, and solves the problem that rigid positioning is prone to positioning deviation and inaccurate positioning length.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a four-tooth blind hole input shaft finishing tooling, comprising a transmission shaft end face body, the surface of the transmission shaft end face body has an arc-shaped sleeve plate, the surface of the arc-shaped sleeve plate contacts with a fixing plate, the surface of the fixing plate contacts with a circular bottom plate, the inner cavity of the arc-shaped sleeve plate is provided with a first central connecting column, the inner cavity of the fixing plate is provided with a rubber connecting disk, the surface of the circular bottom plate is penetrated by a rubber chuck, an intermediate plate is provided on the side opposite to the rubber chuck and the rubber connecting disk, a second central connecting column is provided on one side of the rubber connecting disk, and a connecting shaft is penetrated by the surface of the circular bottom plate.

[0007] During actual manufacturing, the coordination of the arc sleeve, fixed plate, circular base plate, fixed column, positioning pillar, limit bolt and toothed center connecting column is conducive to fixing and improving the end face of the transmission shaft end face body, and can position and fix the transmission shaft end face body and the arc sleeve to avoid relative rotation between the two during tooth pulling. The toothed center connecting column can facilitate improving the overall stability of the positioning tooling during tooth pulling. The tooling adopts rear-pull positioning, and the axial length positioning is accurate, thereby improving the quality of tooth pulling.

[0008] Preferably, a pad is provided on the surface of the first central connecting column, the pad is in contact with the inner wall of the fixing plate, and the outer side of the connecting shaft is provided with external teeth which fit into the middle inner tooth hole of the middle plate.

[0009] The four-tooth blind hole input shaft finishing tooling mainly uses a tooth-shaped center connecting column to facilitate improving the overall stability of the positioning tooling during the tooth pulling process.

[0010] Preferably, the inner walls of the pad, the fixing plate and the circular bottom plate are provided with insertion holes, and the inner cavities of the insertion holes are penetrated by positioning pillars.

[0011] Preferably, the rubber connecting disc, the middle plate and the rubber clamp are respectively sleeved on the surface of the connecting shaft, and the pad is arranged in the inner cavity of the second central connecting column.

[0012] In actual manufacturing, the rubber connecting disc, rubber chuck and intermediate plate are matched, and the four-tooth positioning part adopts a combination of metal and rubber. The positioning is flexible, and the positioning surface is in surface contact with the product. At the same time, when the product sizes are different, the deformation of the fixture can be flexibly adjusted according to the product to ensure the positioning contact surface between the tooling and the product. The runout of the processed parts is stable, which can improve the processing efficiency and accuracy of the four-tooth blind hole input shaft.

[0013] Preferably, the inner walls of the fixing plate and the arc-shaped sleeve plate are respectively provided with semicircular grooves, and the surface of the fixing plate is penetrated by a fixing column, and the fixing column is penetrated by an inner cavity of the semicircular groove.

[0014] The four-tooth blind hole input shaft finishing tooling can mainly position and fix the transmission shaft end face body and the arc sleeve plate through the fixing column and the positioning support column, so as to avoid relative rotation between the two during the tooth pulling process and improve the quality of the tooth pulling.

[0015] Preferably, a limiting bolt is provided through the inner walls of the first central connecting column, the rubber connecting plate and the second central connecting column, and the limiting bolt is threadedly connected to the inner wall of the first central connecting column.

[0016] Compared with the prior art, the utility model has the advantages that the deformation of the clamp can be flexibly adjusted according to the product, thus meeting the requirements of the application field of mechanical processing equipment for high-efficiency processing and precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a sectional stereoscopic schematic diagram of the utility model.

[0018] Figure 2 It is a partial left-side stereoscopic schematic diagram of the utility model.

[0019] Figure 3 It is a partial cross-sectional schematic diagram of the utility model.

[0020] Figure 4 It is a partial right side schematic diagram of the utility model.

[0021] In the figure: 1. transmission shaft end face; 2. arc-shaped sleeve plate; 3. fixing plate; 4. circular bottom plate; 5. first center connecting column; 6. rubber connecting plate; 7. rubber chuck; 8. middle plate; 9. second center connecting column; 10. connecting shaft; 11. pad; 12. socket; 13. positioning pillar; 14. semicircular groove; 15. fixing column; 16. limit bolt. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the four-tooth blind hole input shaft finishing tooling comprises a transmission shaft end face body 1, the surface of the transmission shaft end face body 1 has an arc-shaped sleeve plate 2, the surface of the arc-shaped sleeve plate 2 contacts with a fixing plate 3, the surface of the fixing plate 3 contacts with a circular bottom plate 4, the inner cavity of the arc-shaped sleeve plate 2 is provided with a first central connecting column 5, the inner cavity of the fixing plate 3 is provided with a rubber connecting disk 6, the surface of the circular bottom plate 4 is penetrated by a rubber chuck 7, the side opposite to the rubber chuck 7 and the rubber connecting disk 6 is provided with an intermediate plate 8, one side of the rubber connecting disk 6 is provided with a second central connecting column 9, and the surface of the circular bottom plate 4 is penetrated by a connecting shaft 10.

[0024] A pad 11 is provided on the surface of the first central connecting column 5 , and the pad 11 contacts the inner wall of the fixing plate 3 . The outer side of the connecting shaft 10 is provided with external teeth that fit into the inner tooth hole in the middle of the middle plate 8 .

[0025] The inner walls of the pad 11, the fixing plate 3 and the circular bottom plate 4 are provided with a plug hole 12, and the inner cavity of the plug hole 12 is penetrated by a positioning pillar 13. The rubber connecting disc 6, the middle plate 8 and the rubber clamp 7 are respectively sleeved on the surface of the connecting shaft 10, and the pad 11 is set in the inner cavity of the second central connecting column 9.

[0026] The inner walls of the fixing plate 3 and the arc-shaped sleeve plate 2 are respectively provided with semicircular grooves 14, and the surface of the fixing plate 3 is penetrated with a fixing column 15, and the fixing column 15 is penetrated and set in the inner cavity of the semicircular groove 14. The inner walls of the first central connecting column 5, the rubber connecting plate 6 and the second central connecting column 9 are penetrated with a limiting bolt 16, and the limiting bolt 16 is threadedly connected to the inner wall of the first central connecting column 5.

[0027] When in use, firstly, the arc sleeve 2 is sleeved on the outer side of the transmission shaft end face body 1 through the arc groove in the middle, and then the first center connecting column 5 is passed through the outer teeth on the outer side into the inner tooth hole in the middle of the arc sleeve 2, and at the same time, the first center connecting column 5 is rotated to make the socket 12 on the back of the pad 11 coincide with the through hole on the circular bottom plate 4, so that the positioning pillar 13 is horizontally passed through the circular bottom plate 4, the socket 12 on the outer side of the fixing plate 3 and the through hole on the pad 11, and the fixing column 15 is passed into the semicircular groove 14, and then the transmission shaft end face body 1 and the positioning tool are fixed on the broaching machine, and the tooth drawing cutter is placed on the end face of the transmission shaft end face body 1 for tooth drawing, and the first center connecting column 5 is connected to the transmission shaft end face body through the outer teeth. 1 The inner teeth in the middle are engaged to avoid relative sliding between the positioning tool and the transmission shaft end surface body 1, thereby improving the overall stability. At the same time, the first center connecting column 5 is prevented from being higher than the transmission shaft end surface body 1, which affects the tooth pulling of the end surface of the transmission shaft end surface body 1 by the tooth pulling cutter. The semicircular groove 14 is located directly above the insertion hole 12, which is convenient for embedding the fixing column 15 into the inner side of the semicircular groove 14, thereby fixing the transmission shaft end surface body 1 and the circular bottom plate 4, thereby avoiding relative rotation of the circular bottom plate 4 on the transmission shaft end surface body 1. The contact surface between the rubber connecting disk 6, the rubber chuck 7, the intermediate plate 8 and the connecting shaft 10 is positioned as a flexible positioning surface contact, thereby ensuring the stable part jump after the positioning processing of the tool and the product.

[0028] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A four-tooth blind hole input shaft finishing tool, comprising a transmission shaft end face body (1), characterized in that: The surface of the transmission shaft end surface body (1) has an arc-shaped sleeve plate (2), the surface of the arc-shaped sleeve plate (2) contacts a fixed plate (3), the surface of the fixed plate (3) contacts a circular bottom plate (4), the inner cavity of the arc-shaped sleeve plate (2) is provided with a first central connecting column (5), the inner cavity of the fixed plate (3) is provided with a rubber connecting disk (6), the surface of the circular bottom plate (4) is penetrated by a rubber clamp (7), the side opposite to the rubber clamp (7) and the rubber connecting disk (6) is provided with an intermediate plate (8), one side of the rubber connecting disk (6) is provided with a second central connecting column (9), and the surface of the circular bottom plate (4) is penetrated by a connecting shaft (10).

2. According to claim 1, a four-tooth blind hole input shaft finishing tool is characterized in that: A pad (11) is provided on the surface of the first central connecting column (5), the pad (11) is in contact with the inner wall of the fixing plate (3), and the outer side of the connecting shaft (10) is provided with external teeth that engage with the middle internal tooth hole of the middle plate (8).

3. The tooling for finishing turning a shaft of a four-tooth blind hole input shaft according to claim 2, characterized in that: The inner walls of the pad (11), the fixing plate (3) and the circular bottom plate (4) are provided with insertion holes (12), and the inner cavity of the insertion hole (12) is penetrated by a positioning pillar (13).

4. The tooling for finishing turning a shaft of a four-tooth blind hole input shaft according to claim 2, characterized in that: The rubber connection disk (6), the middle plate (8) and the rubber clamp (7) are respectively sleeved on the surface of the connection shaft (10), and the pad (11) is arranged in the inner cavity of the second central connection column (9).

5. The tooling for finishing turning a shaft of a four-tooth blind hole input shaft according to claim 1, characterized in that: The inner walls of the fixing plate (3) and the arc-shaped sleeve plate (2) are respectively provided with semicircular grooves (14), and the surface of the fixing plate (3) is penetrated by a fixing column (15), and the fixing column (15) is penetrated in the inner cavity of the semicircular groove (14).

6. The tooling for finishing turning a shaft of a four-tooth blind hole input shaft according to claim 1, characterized in that: A limiting bolt (16) is provided through the inner walls of the first central connecting column (5), the rubber connecting plate (6) and the second central connecting column (9), and the limiting bolt (16) is threadedly connected to the inner wall of the first central connecting column (5).

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