Supporting clamp structure for part gear shaping machining

Abstract

The utility model discloses a supporting clamp structure for part gear shaping processing, which comprises a clamp body, a supporting plate arranged on the clamp body, a Haver cushion block arranged on the supporting plate and a pressing piece used for pressing a part on the Haver cushion block, and the clamp body is provided with an accommodating part used for accommodating a radial plate of the part. A center shaft of a part is arranged in the supporting plate and the Harvard cushion block in a penetrating mode, and the Harvard cushion block abuts against the supporting and locating face on the center shaft. A supporting and positioning mode of combining the supporting plate and the Harvard cushion block is adopted, the design diameter of the Harvard cushion block is reduced, the stress torque of the Harvard cushion block is reduced, the problem of poor rigidity of the clamp is solved, the gear shaping precision is improved, meanwhile, the size of the Harvard cushion block can be customized according to different parts, and the machining cost is reduced. Different parts of the same type can be clamped by the clamp only by manufacturing auxiliary supports of different Haver cushion blocks, the problem that a gear shaping clamp is not high in universality is solved, multiple purposes can be achieved, the number of clamps is reduced, the production cost is reduced, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to a fixture in mechanical processing, in particular to a supporting fixture structure for part gear shaping processing, which is suitable for fixing and positioning a part of a disc shaft gear when it needs to avoid a large-diameter thin-spoke gear for gear shaping (spline) and other processing support. Background Art

[0002] In existing mechanical processing, for disc-shaft gears that need to avoid large-diameter thin spokes and small supporting surfaces, the design of the gear-shaping fixture generally adopts a single Haversian block support, a large flat pressure plate design, and is tightened with bolts. The distance between the support point and the clamping point of the single Haversian block is long, the force torque is large, and the deformation is large, resulting in poor fixture rigidity and easy generation of sinking force; while the structure of the bolt-clamping pressure plate is adopted, the different bolt tightening sequences will lead to unbalanced clamping force, the parts cannot be compacted, and the parts will become loose during the processing, making the gear-shaping quality difficult to guarantee (some high-precision gear shafts have spline quality problems during the spline processing process, and the spline tooth direction, accumulation and runout are all unqualified. The spline qualification rate can only reach 60%, seriously affecting product delivery). If a dedicated gear-shaping fixture is used for each part, the processing cost will be greatly increased due to its small scope of application. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a supporting fixture structure for part gear shaping processing, which is beneficial to reducing the force moment and improving the fixture rigidity and gear shaping accuracy.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A support fixture structure for part gear shaping processing includes a clamping body, a support plate provided on the clamping body, a Haver pad provided on the support plate, and a pressing member for pressing the part against the Haver pad. The clamping body is provided with a receiving portion for accommodating a spoke plate of the part, the central axis of the part is passed through the support plate and the Haver pad, and the Haver pad abuts against a supporting positioning surface on the central axis.

[0006] As a further improvement of the above technical solution: the clamping member is a clamping nut, the support plate is provided with a convex portion with an external thread, the clamping nut is connected to the convex portion, and the central axis is passed through the clamping nut.

[0007] As a further improvement of the above technical solution: a compression washer is provided between the compression nut and the part.

[0008] As a further improvement of the above technical solution: the support plate and the clamp body are fixedly connected by fasteners.

[0009] As a further improvement of the above technical solution: the support plate is provided with a plurality of waist-shaped grooves along the circumferential direction, the fastener is passed through the waist-shaped groove, the diameter of one end of the waist-shaped groove is smaller than the outer diameter of the fastener, and the diameter of the other end of the waist-shaped groove is larger than the outer diameter of the fastener.

[0010] As a further improvement of the above technical solution: a handle is provided on the support plate.

[0011] As a further improvement of the above technical solution: a positioning groove is provided on the support plate, and the Haver pad is arranged in the positioning groove.

[0012] As a further improvement of the above technical solution: the clamp body is installed on the machine tool through fasteners.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] The utility model discloses a support fixture structure for part gear shaping processing, wherein a support plate is installed on a fixture body, and a Haver pad is installed on the support plate, and a supporting positioning method combining the support plate and the Haver pad is adopted, so that the design diameter of the Haver pad is reduced, and the force torque of the Haver pad is reduced, thereby solving the problem of poor fixture rigidity and improving gear shaping accuracy. At the same time, the size of the Haver pad can be customized according to different parts. Different parts of the same type only need to make auxiliary supports of different Haver pads to be suitable for clamping of the fixture, which solves the problem of low versatility of the gear shaping fixture and can realize multiple uses of one clamp, thereby reducing the number of fixtures, reducing production costs, and having a wide range of applications.

[0015] Furthermore, the support fixture structure for part gear shaping processing disclosed by the utility model adopts a clamping method of a clamping nut, which can avoid the problem of unbalanced clamping force and failure to compact parts caused by the different clamping sequence and clamping force implemented during manual operation when a traditional screw clamping structure is clamped. The clamping force of the clamping nut is automatically perpendicular to the clamping end face of the part, and the clamping force is stable and reliable.

[0016] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic cross-sectional view of a supporting fixture structure used for part gear shaping processing.

[0018] Figure 2 It is a schematic diagram of the main structure of the clamp body in the present utility model.

[0019] Figure 3 It is a schematic diagram of the main structure of the support plate in the utility model.

[0020] Figure 4It is a schematic diagram of the main structure of the Haver washer in the utility model.

[0021] The numbers in the figure represent:

[0022] 1. Clamping body; 11. Accommodating part; 2. Support plate; 21. Protrusion; 22. Waist-shaped groove; 23. Positioning groove; 3. Haver pad; 4. Parts; 41. Spoke plate; 42. Center axis; 43. Support and positioning surface; 5. Clamping piece; 51. Clamping washer; 6. Fastener. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 a limitation on the present invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0025] In this utility model, unless otherwise specified or limited, the terms "assemble," "connect," "connect," "fix," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Figures 1 to 4An embodiment of the support fixture structure for part gear shaping processing of the utility model is shown. The support fixture structure for part gear shaping processing of this embodiment includes a clamp body 1, a support plate 2 provided on the clamp body 1, a Havers pad 3 provided on the support plate 2 and a pressing member 5 for pressing the part 4 onto the Havers pad 3. The clamp body 1 is provided with a receiving portion 11 for accommodating the spoke plate 41 of the part 4. The central axis 42 of the part 4 is passed through the support plate 2 and the Havers pad 3, and the Havers pad 3 abuts against the supporting positioning surface 43 on the central axis 42.

[0028] The support fixture structure for part gear shaping processing of this embodiment has a support plate 2 installed on the fixture body 1, and a Haver pad 3 installed on the support plate 2. A support and positioning method combining the support plate 2 and the Haver pad 3 is adopted to reduce the design diameter of the Haver pad 3, and the force torque of the Haver pad 3 becomes smaller, thereby solving the problem of poor fixture rigidity and being beneficial to improving gear shaping accuracy. At the same time, the size of the Haver pad 3 can be customized according to different parts 4. Different parts 4 of the same type only need to make different Haver pads 3 to be suitable for clamping in the fixture, which solves the problem of low versatility of the gear shaping fixture and can achieve multiple uses of one clamp, thereby reducing the number of fixtures, reducing production costs, and having a wide range of applications.

[0029] Furthermore, in this embodiment, the pressing member 5 is a pressing nut, a protrusion 21 with an external thread is provided on the support plate 2, the pressing nut is connected to the protrusion 21, and the central shaft 42 is passed through the pressing nut.

[0030] The support fixture structure for part gear shaping processing in this embodiment adopts a clamping method of a clamping nut, which can avoid the problem of unbalanced clamping force and failure to compact part 4 caused by the different clamping sequence and clamping force implemented during manual operation when a traditional screw clamping structure is clamped. The clamping force of the clamping nut is automatically perpendicular to the clamping end face of part 4, and the clamping force is stable and reliable.

[0031] Furthermore, in this embodiment, a compression washer 51 is provided between the compression nut and the part 4. By assembling the compression washer 51 between the compression nut and the part 4, the friction force can be increased and the part 4 can be prevented from being crushed.

[0032] As a preferred embodiment, the support plate 2 and the clamp body 1 are fixedly connected by fasteners 6 (such as bolts, screws, etc.). The use of fasteners 6 to fix the support plate 2 and the clamp body 1 has good reliability and is convenient for replacing the support plate 2 and components such as the Haval pad 3 thereon.

[0033] Furthermore, in this embodiment, the support plate 2 is provided with three waist-shaped grooves 22 along its circumference, through which fasteners 6 are inserted. The diameter of one end of the waist-shaped groove 22 is smaller than the outer diameter of the fastener 6, while the diameter of the other end of the waist-shaped groove 22 is larger than the outer diameter of the fastener 6. When replacing a part 4, it is not necessary to completely remove the fastener 6 from the waist-shaped groove 22. The fastener 6 only needs to be loosened until the support plate 2 can rotate. Then, the support plate 2 is rotated so that the fastener 6 is located at the end with the larger diameter of the waist-shaped groove 22. At this point, the support plate 2 can be removed upward, enabling quick replacement. The waist-shaped groove 22 also helps reduce the weight of the support plate 2, making it easier to disassemble and assemble the support plate 2.

[0034] Furthermore, in this embodiment, a handle (not shown) is provided on the support plate 2. The operator can use the handle to disassemble and assemble the support plate 2, which is more convenient and labor-saving.

[0035] Furthermore, in this embodiment, a positioning groove 23 is provided on the support plate 2, and the Haver pad 3 is arranged in the positioning groove 23, which can realize fast and accurate positioning of the Haver pad 3 on the support plate 2, and the structure is simple and effective.

[0036] As a preferred embodiment, the clamp body 1 is mounted on the machine tool by means of fasteners 6 (such as bolts, screws, etc.), which fixes the entire clamp and has a simple and reliable structure.

[0037] The support fixture structure for gear shaping of parts in this utility model solves the problems of low gear shaping precision and high processing costs, and the actual feedback from production has increased the processing qualification rate to 100%. The specific usage method is as follows:

[0038] (1) Manufacture the gear shaping fixture as required and inspect it to be qualified;

[0039] (2) Installation: Install the fixture body 1 on the machine tool, align the fixture support surface to no more than 0.01, and then install the bolts;

[0040] (3) Clamping parts: Install part 4 into the clamp body 1, and support and position it through the support plate 2 and the Haver pad 3, and tighten the clamping nut to fix part 4.

[0041] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the present invention, or modify it into equivalent embodiments with equivalent variations. Therefore, any simple modifications, equivalent variations, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the scope of protection of the present invention.

Claims

1. A support fixture structure for gear shaping of parts, characterized by: The invention comprises a clamp body (1), a support plate (2) arranged on the clamp body (1), a Haver pad (3) arranged on the support plate (2), and a pressing member (5) for pressing a part (4) onto the Haver pad (3). The clamp body (1) is provided with a receiving portion (11) for receiving a spoke plate (41) of the part (4). The central axis (42) of the part (4) is passed through the support plate (2) and the Haver pad (3). The Haver pad (3) abuts against a supporting positioning surface (43) on the central axis (42).

2. The support fixture structure for part gear shaping according to claim 1, characterized in that: The pressing member (5) is a pressing nut. A convex portion (21) with an external thread is provided on the support plate (2). The pressing nut is connected to the convex portion (21). The central axis (42) is passed through the pressing nut.

3. The support fixture structure for part gear shaping according to claim 2, characterized in that: A compression washer (51) is provided between the compression nut and the part (4).

4. The support fixture structure for part gear shaping according to any one of claims 1 to 3, characterized in that: The support plate (2) and the clamp body (1) are fixedly connected via fasteners (6).

5. The supporting fixture structure for part gear shaping according to claim 4, characterized in that: The support plate (2) is provided with a plurality of waist-shaped grooves (22) along the circumferential direction, and the fastener (6) is inserted into the waist-shaped groove (22). The diameter of one end of the waist-shaped groove (22) is smaller than the outer diameter of the fastener (6), and the diameter of the other end of the waist-shaped groove (22) is larger than the outer diameter of the fastener (6).

6. The support fixture structure for part gear shaping according to claim 4, characterized in that: The support plate (2) is provided with a handle.

7. The support fixture structure for part gear shaping according to any one of claims 1 to 3, characterized in that: A positioning groove (23) is provided on the support plate (2), and the Haversian pad (3) is arranged in the positioning groove (23).

8. The support fixture structure for part gear shaping according to any one of claims 1 to 3, characterized in that: The clamp body (1) is mounted on a machine tool via a fastener (6).

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