Multi-hole coaxial part machining clamp

Abstract

The utility model discloses a multi-hole coaxial part machining clamp, and particularly relates to the technical field of multi-hole positioning machining, the machining clamp is used for fixing a plurality of coaxial parts, and comprises a positioning pipe and a radial screw, one end of the positioning pipe is provided with a positioning head, the positioning head is symmetrically provided with a plurality of radial threaded holes, and the radial screw is connected with the positioning pipe. A radial threaded hole is formed in the positioning head, a center hole facilitating chip removal and workpiece retreating is formed in the center of the positioning pipe, a radial screw is installed in the radial threaded hole through threads, and after a plurality of coaxial parts are placed in the positioning head, the tail end of the radial screw abuts against the outer walls of the coaxial parts to achieve workpiece fixing. Compared with the prior art, the machining clamp has the advantages that the radial screws and the matching relation between the inner diameter of the center hole and the outer diameter of the small pipe are utilized, a machined part can be reliably fixed, the machining requirement of products with multiple holes is met, deformation of the products in the machining process is avoided, the size precision and the form and location tolerance are guaranteed, and the yield is remarkably increased.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-hole positioning processing, in particular to a multi-hole coaxial parts processing fixture. Background Art

[0002] Coaxial parts with multiple holes are common tubular structures, often used in product housings or connectors. The complex multi-hole structure inside is very easy to deform during the processing. In particular, when there are a large number of holes and a large height difference between the holes, it becomes very difficult to ensure the processing dimensional accuracy and form and position tolerances. In the prior art, some technicians use vises to fix them, but because coaxial parts with multiple holes are thin-walled parts, during the mechanical processing, the processing scrap rate is high due to problems such as concentrated force points on the jaws and poor clamping coaxiality. How to ensure the processing dimensional accuracy, form and position tolerances and coaxiality requirements of coaxial parts with multiple holes has become a technical problem in this field. Utility Model Content

[0003] In view of this, the utility model proposes a multi-hole coaxial parts processing fixture, which can reliably fix the workpiece, meet the processing requirements of multi-hole products, avoid deformation of the product during the processing, ensure dimensional accuracy and form and position tolerances, and significantly improve the yield rate.

[0004] The utility model solves the above problems through the following technical means:

[0005] A multi-hole coaxial parts processing fixture, characterized in that it is used to fix multiple coaxial parts, including a positioning tube and radial screws, wherein: a positioning head is provided at one end of the positioning tube, a plurality of radial threaded holes are symmetrically opened on the positioning head, and a center hole for chip removal and part withdrawal is opened at the center of the positioning tube; the radial screws are installed in the radial threaded holes through threads; after multiple coaxial parts are placed in the positioning head, the ends of the radial screws are used to tighten the outer walls of the multiple coaxial parts to achieve workpiece fixation.

[0006] Preferably, the inner wall of the center hole is tapped to form an internal thread.

[0007] Preferably, a positioning inner tube is movably installed inside the central hole, the outer wall of the positioning inner tube is tapped to form an external thread, a positioning platform is coaxially arranged at one end of the positioning inner tube close to the positioning head, and a slot is opened at the other end of the positioning inner tube.

[0008] Preferably, the bottom of the positioning platform is tapped, and the bottom of the positioning platform is detachably mounted in the middle hole of the positioning inner tube through threads.

[0009] Preferably, the multiple coaxial parts are composed of a large tube, a bottom plate and a small tube, the large tube and the small tube are coaxially arranged and connected by the bottom plate, a plurality of step holes are coaxially arranged inside the large tube, and a plurality of connecting ears are symmetrically arranged on the outer side of the bottom plate.

[0010] Preferably, the end of the positioning tube is fixed in the claw.

[0011] Preferably, the inner diameter of the central hole is consistent with the outer diameter of the small tube.

[0012] Preferably, the outer diameter of the positioning platform is consistent with the inner diameter of the small tube.

[0013] The utility model provides a multi-hole coaxial parts processing fixture with the following beneficial effects:

[0014] 1) The processing fixture uses radial screws and the matching relationship between the inner diameter of the center hole and the outer diameter of the small tube to reliably fix the workpiece, meet the processing requirements of multiple hole products, avoid deformation of the product during processing, ensure dimensional accuracy and form and position tolerances, and significantly improve the yield rate.

[0015] 2) A positioning inner tube is movably installed inside the center hole of the processing fixture, and the positioning inner tube can adapt to small tubes of different lengths. In addition, the outer diameter of the positioning platform of the positioning inner tube is consistent with the inner diameter of the small tube. During the tightening process of the radial screw, the positioning platform can effectively support the inside of the small tube to prevent its deformation. In addition, the positioning platform can be flexibly replaced and disassembled using a threaded structure to adapt to small tubes of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a front view schematic diagram of multiple coaxial parts of the present utility model;

[0019] Figure 3 It is a schematic diagram of the back side of multiple coaxial parts of the present utility model;

[0020] Figure 4 It is the installation diagram of the utility model;

[0021] Figure 5 It is a schematic diagram of the internal structure of the utility model.

[0022] In the figure, 1-multiple coaxial parts, 101-large tube, 102-bottom plate, 103-small tube, 104-step hole, 105-connecting ear, 2-positioning tube, 201-positioning head, 202-radial threaded hole, 203-center hole, 204-internal thread, 3-radial screw, 4-positioning inner tube, 401-external thread, 402-positioning platform, 403-slotted mouth, 5-claw. DETAILED DESCRIPTION

[0023] In the description of the present utility model, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 a limitation on the present utility model. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0024] The utility model will be described in detail below with reference to the accompanying drawings.

[0025] like Figures 1 to 5 The processing fixture for multiple coaxial parts with holes is used to fix multiple coaxial parts (1). The thin-walled cylindrical structures of multiple coaxial parts 1 need to be reliably fixed to ensure the processing size accuracy, form and position tolerance and coaxiality requirements of the multiple coaxial parts with holes. In the figure, the processing fixture includes a positioning tube 2 and a radial screw 3. Specifically, a positioning head 201 is provided at one end of the positioning tube 2. The positioning head 201 is symmetrically provided with multiple radial threaded holes 202. In the figure, three radial threaded holes 202 are provided at intervals of 120°. A center hole 203 is provided at the center of the positioning tube 2 for facilitating chip removal and workpiece withdrawal. The center hole 203 is conducive to the discharge and withdrawal of the workpiece by cutting. The radial screw 3 is installed in the radial threaded hole 202 by threading; after the multiple coaxial parts 1 are placed in the positioning head 201, the end of the radial screw 3 is used to tighten the outer wall of the multiple coaxial parts 1 to achieve workpiece fixation.

[0026] In actual application, the processing fixture uses radial screws and the matching relationship between the inner diameter of the center hole and the outer diameter of the small tube to reliably fix the workpiece, meet the processing requirements of multiple hole products, avoid deformation of the product during the processing, ensure dimensional accuracy and form and position tolerances, and significantly improve the yield rate.

[0027] It should be noted that the inner wall of the center hole 203 can be further tapped to form an internal thread 204, a positioning inner tube 4 is movably installed inside the center hole 203, the outer wall of the positioning inner tube 4 is tapped to form an external thread 401, a positioning platform 402 is coaxially arranged at one end of the positioning inner tube 4 close to the positioning head 201, and a slot 403 is provided at the other end of the positioning inner tube 4, and the slot 403 is convenient for screwdriver connection to disassemble it. In addition, the bottom of the positioning platform 402 is tapped, and the bottom of the positioning platform 402 is detachably installed in the center hole of the positioning inner tube 4 through threads.

[0028] In actual work, a positioning inner tube is movably installed inside the center hole of the processing fixture. The positioning inner tube can adapt to small tubes of different lengths. In addition, the outer diameter of the positioning platform of the positioning inner tube is consistent with the inner diameter of the small tube. During the tightening process of the radial screw, the positioning platform can effectively support the inside of the small tube to prevent its deformation. In addition, the positioning platform can use the threaded structure to flexibly replace and disassemble to adapt to small tubes of different sizes.

[0029] In the figure, the multiple coaxial parts 1 are composed of a large tube 101, a base plate 102 and a small tube 103. The large tube 101 and the small tube 103 are coaxially arranged and connected by the base plate 102. The interior of the large tube 101 is coaxially provided with a plurality of step holes 104, and the outer side of the base plate 102 is symmetrically provided with a plurality of connecting ears 105. Specifically, the multiple coaxial parts 1 are a rotating body shell, and its inner hole size accuracy is 0.013mm. There are a total of 8 inner diameter size requirements within a length of 16mm, of which 4 have higher size accuracy requirements, and the step outer diameter coaxiality requirement is 0.03mm. At the same time, the four bosses on both sides of the outer diameter have a large drop, which is very easy to deform during processing, thereby changing the inner diameter size accuracy and shape and position tolerance.

[0030] During actual processing, the end of the positioning tube 2 is fixed in the claw 5, the inner diameter of the center hole 203 is consistent with the outer diameter of the small tube 103, and the outer diameter of the positioning platform 402 is consistent with the inner diameter of the small tube 103. The specific operation is as follows: the processing fixture uses the outer diameter of the step as the reference, and the clearance with the outer diameter of the product is less than 0.03mm. When the rest of the shape and boss processing is completed, the outer diameter of the product step is matched with the inner diameter of the tooling, and the radial screws of the tooling are tightened. The use of this tooling effectively ensures the coaxiality requirements of multiple holes and outer diameters, and the clamping is convenient and fast, which not only ensures product quality but also improves work efficiency.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A multi-hole coaxial parts processing fixture, characterized in that: Used to fix multiple coaxial parts (1), comprising a positioning tube (2) and a radial screw (3), wherein: A positioning head (201) is provided at one end of the positioning tube (2), a plurality of radial threaded holes (202) are symmetrically provided on the positioning head (201), and a center hole (203) for chip removal and part removal is provided at the center of the positioning tube (2); The radial screw (3) is threadably mounted in the radial threaded hole (202); After the multiple coaxial parts (1) are placed in the positioning head (201), the ends of the radial screws (3) are used to tighten the outer walls of the multiple coaxial parts (1) to fix the workpieces.

2. The multi-hole coaxial parts processing fixture as claimed in claim 1, characterized in that: The inner wall of the central hole (203) is tapped to form an internal thread (204).

3. The multi-hole coaxial parts processing fixture as claimed in claim 2, characterized in that: A positioning inner tube (4) is movably installed inside the central hole (203); the outer wall of the positioning inner tube (4) is tapped to form an external thread (401); a positioning platform (402) is coaxially arranged at one end of the positioning inner tube (4) close to the positioning head (201); and a slotted opening (403) is provided at the other end of the positioning inner tube (4).

4. The multi-hole coaxial parts processing fixture as claimed in claim 3, characterized in that: The bottom of the positioning platform (402) is threaded, and the bottom of the positioning platform (402) is detachably mounted in the middle hole of the positioning inner tube (4) via threads.

5. The multi-hole coaxial parts processing fixture as claimed in claim 4, characterized in that: The plurality of coaxial components (1) are composed of a large tube (101), a bottom plate (102) and a small tube (103); the large tube (101) and the small tube (103) are coaxially arranged and connected by the bottom plate (102); a plurality of step holes (104) are coaxially arranged inside the large tube (101); and a plurality of connection ears (105) are symmetrically arranged on the outside of the bottom plate (102).

6. The multi-hole coaxial parts processing fixture as claimed in claim 5, characterized in that: The end of the positioning tube (2) is fixed in the claw (5).

7. The multi-hole coaxial parts processing fixture as claimed in claim 6, characterized in that: The inner diameter of the central hole (203) is consistent with the outer diameter of the small tube (103).

8. The multi-hole coaxial parts processing fixture as claimed in claim 7, characterized in that: The outer diameter of the positioning platform (402) is consistent with the inner diameter of the small tube (103).

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