Hobbing clamp for shaft fork type parts

Abstract

The invention belongs to the field of machine tool machining, and relates to a shaft fork part hobbing fixture, which adopts upper and lower tips to be matched with a workpiece center hole for centering, realizes self-adaptive positioning by combining a first positioning block, a second positioning block and a V-shaped positioning block driven by a rectangular spring, ensures the stress balance of a workpiece, and improves the machining precision and the phase accuracy. Mounting holes are designed in the clamp base, mounting of the positioning blocks and the springs is facilitated, and the positioning blocks are symmetrically arranged about the center of the base to adapt to parts of different sizes. The lower tip is provided with an ejector rod to achieve quick replacement and improve efficiency. The base is further provided with screws for connecting the workbench and the end cover, and stability and guidance quality are enhanced. And baffles are arranged on the outer sides of the positioning blocks, and the universality is improved through the step clamping design. In conclusion, the fixture has the characteristics of self-adaptive positioning, high precision, quick tip replacement, high stability and wide applicability, the hobbing efficiency and quality of shaft fork parts are remarkably improved, and powerful support is provided for automatic machining.

Description

Technical Field

[0001] The invention belongs to the field of machine tool processing and relates to a gear hobbing fixture for shaft fork parts. Background Art

[0002] With the rapid development of modern machining technology, the automation level of machining machine tools has been continuously improved, which has led to an increasing demand for machining of various special-shaped parts, especially for shaft fork parts with specific phase requirements. During the machining process, such parts often face multiple challenges such as difficult positioning, high machining accuracy requirements, and complex phase control.

[0003] When locating such special-shaped parts, traditional fixtures usually rely on the precise shape of the parts or the processed surface for positioning. However, for shaft fork parts, especially when the positioning arc is still the blank surface, the traditional fixture positioning method is inadequate. The uncertainty and irregularity of the blank surface make it difficult for the fixture to achieve accurate and stable positioning, which in turn affects the subsequent hobbing processing accuracy and phase requirements.

[0004] In addition, during the machining process, the fork parts are prone to deformation due to uneven force, which further affects the machining quality and phase accuracy of the parts. Therefore, how to design a fixture that can adapt to the positioning of the blank surface and ensure the machining accuracy and phase requirements has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a gear rolling fixture for shaft fork parts to solve the existing problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a gear rolling fixture for shaft fork parts, comprising a base, and a first positioning block, a second positioning block and a V-shaped positioning block respectively arranged on the base; the first positioning block and the second positioning block are on the same side, and are symmetrically arranged with the V-shaped positioning block about the center of the base; a mounting hole is opened on the base, and rectangular springs installed in the mounting hole are respectively arranged between the first positioning block, the second positioning block, the V-shaped positioning block and the base; the shaft fork workpiece is adaptively positioned by the first positioning block, the second positioning block and the V-shaped positioning block, so that the force on the workpiece is balanced, thereby ensuring the processing accuracy and phase requirements of the workpiece.

[0007] Optionally, a top seat is installed at the center of the base between the first positioning block, the second positioning block and the V-shaped positioning block, and a lower top seat acting on the shaft fork workpiece is arranged at the center of the top seat.

[0008] Optionally, a push rod is connected to the bottom of the lower center, and the lower center can be quickly replaced by moving the push rod up and down.

[0009] Optionally, an upper center point is further provided on the top of the shaft fork workpiece, and the shaft fork workpiece is centered by the cooperation of the upper center point, the lower center point and the center hole.

[0010] Optionally, a plurality of first screws are also provided on the base for connecting to the workbench.

[0011] Optionally, an end cover is installed on the base through a plurality of second screws. The end cover is arranged outside the first positioning block, the second positioning block, and the V-shaped positioning block, and guides them in the vertical direction.

[0012] Optionally, baffles are respectively provided on the outer sides of the first positioning block, the second positioning block and the outer side of the V-shaped positioning block.

[0013] Optionally, a first step for limiting is provided on the inner side of the baffle plate toward the positioning block, and a second step for engaging with the first step is provided on the first positioning block, the second positioning block and the V-shaped positioning block respectively.

[0014] The beneficial effects of the present invention are:

[0015] 1) Adaptive positioning to improve machining accuracy: The upper and lower centers are matched with the center hole to achieve centering, and the first positioning block, the second positioning block and the V-shaped positioning block driven by the rectangular spring are used to adaptively position the positioning surface of the workpiece blank, so that the fixture can flexibly adapt to shaft fork parts of different shapes and sizes, effectively improving the machining accuracy;

[0016] 2) Ensure phase requirements: Due to the design of the positioning block, the workpiece is subjected to balanced force during processing, avoiding processing deformation caused by uneven force, thereby ensuring the phase requirements of the shaft fork parts and improving the overall quality of the product;

[0017] 3) Rapid replacement of the lower center: Through the cooperation of the ejector rod and the workbench pull rod, the lower center can be quickly replaced, which improves the efficiency and flexibility of the fixture and reduces production costs;

[0018] 4) Simple structure and easy maintenance: The overall structural design of the fixture is concise and clear, which is easy to install, debug and maintain, reducing the difficulty of operation and maintenance costs.

[0019] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 It is a schematic diagram of the overall internal structure of a gear hobbing fixture for shaft fork parts after assembly according to the present invention;

[0022] Figure 2 It is a schematic diagram of the installation of a gear hobbing fixture for shaft fork parts of the present invention;

[0023] Figure 3 A top view of a gear hobbing fixture for shaft fork parts of the present invention;

[0024] Figure 4 for Figure 3 BB cross-sectional view;

[0025] Figure 5 The present invention is a stereoscopic diagram of a gear hobbing fixture for shaft fork parts.

[0026] Figure numerals: upper center 1, shaft fork workpiece 2, lower center 3, center seat 4, base 5, top rod 6, first screw 7, first positioning block 8, baffle 9, second positioning block 10, second screw 11, V-shaped positioning block 12, rectangular spring 13, first step 14, second step 15, end cover 16. DETAILED DESCRIPTION

[0027] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0028] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0029] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is 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 operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] See also Figure 1 to Figure 5 , is a gear hobbing fixture for shaft fork parts, including a base 5, and a first positioning block 8, a second positioning block 10 and a V-shaped positioning block 12 respectively arranged on the base 5; the first positioning block 8 and the second positioning block 10 are on the same side, and are symmetrically arranged with the V-shaped positioning block 12 about the center of the base 5; a mounting hole is opened on the base 5, and rectangular springs 13 installed in the mounting holes are respectively arranged between the first positioning block 8, the second positioning block 10, the V-shaped positioning block 12 and the base 5; the shaft fork workpiece 2 is adaptively positioned by the first positioning block 8, the second positioning block 10, and the V-shaped positioning block 12, so that the force on the workpiece is balanced to ensure the processing accuracy and phase requirements of the workpiece, and a top seat 4 is installed at the center of the base 5 between the first positioning block 8, the second positioning block 10 and the V-shaped positioning block 12, and the center of the top seat 4 is provided with a lower top 3 acting on the shaft fork workpiece 2, and the lower top A push rod 6 is also connected to the bottom of the shaft fork workpiece 2, and the lower top 3 can be quickly replaced by moving the push rod 6 up and down. An upper top 1 is also provided on the top of the shaft fork workpiece 2, and the shaft fork workpiece 2 is centered by cooperating with the upper top 1, the lower top 3 and the center hole. A plurality of first screws 7 are also provided on the base 5 for connecting the workbench. An end cover 16 is installed on the base 5 through a plurality of second screws 11. The end cover 16 is arranged on the outside of the first positioning block 8, the second positioning block 10 and the V-shaped positioning block 12, and guides them in the vertical direction. Baffles 9 are respectively provided on the outside of the first positioning block 8, the second positioning block 10 and the V-shaped positioning block 12. A first step 14 for limiting is provided on the inner side of the baffle 9 facing the positioning block direction. A second step 15 for engaging with the first step 14 is respectively provided on the first positioning block 8, the second positioning block 10 and the V-shaped positioning block 12.

[0031] In this embodiment, the positioning block driven by the rectangular spring 13 will be adaptively adjusted according to the actual position of the workpiece to ensure the continuous stability of the workpiece during processing. This adaptive positioning capability enables the fixture to adapt to shaft fork parts of different shapes and sizes, improving the versatility and processing accuracy of the fixture.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A gear hobbing fixture for shaft fork parts, Features: It includes a base, and a first positioning block, a second positioning block and a V-shaped positioning block respectively arranged on the base; the first positioning block and the second positioning block are on the same side and are symmetrically arranged with the V-shaped positioning block about the center of the base; A mounting hole is provided on the base, and rectangular springs installed in the mounting holes are respectively provided between the first positioning block, the second positioning block, the V-shaped positioning block and the base; the shaft fork workpiece is adaptively positioned by the first positioning block, the second positioning block and the V-shaped positioning block, so that the force on the workpiece is balanced, thereby ensuring the workpiece processing accuracy and phase requirements.

2. A gear hobbing fixture for shaft fork parts according to claim 1, Features: A top seat is installed at the center of the base between the first positioning block, the second positioning block and the V-shaped positioning block, and a lower top seat acting on the shaft fork workpiece is arranged at the center of the top seat.

3. A gear hobbing fixture for shaft fork parts according to claim 2, Features: A push rod is also connected to the bottom of the lower center, and the lower center can be quickly replaced by moving the push rod up and down.

4. A gear hobbing fixture for shaft fork parts according to claim 2, Features: An upper center is also provided on the top of the shaft fork workpiece, and the shaft fork workpiece is centered by the cooperation of the upper center, the lower center and the center hole.

5. The gear hobbing fixture for shaft fork parts according to claim 1, Features: The base is also provided with a plurality of first screws for connecting the workbench.

6. A gear hobbing fixture for shaft fork parts according to claim 1, Features: An end cover is installed on the base through a plurality of second screws. The end cover is arranged outside the first positioning block, the second positioning block and the V-shaped positioning block and guides them in the vertical direction.

7. The gear hobbing fixture for shaft fork parts according to claim 1, Features: Baffles are respectively arranged on the outer sides of the first positioning block, the second positioning block and the outer side of the V-shaped positioning block.

8. A gear hobbing fixture for shaft fork parts according to claim 7, Features: A first step for limiting is arranged on the inner side of the baffle plate facing the positioning block, and a second step for engaging with the first step is arranged on the first positioning block, the second positioning block and the V-shaped positioning block respectively.

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