Workpiece machining positioning head structure

Abstract

The utility model relates to the technical field of clamps, in particular to a workpiece machining positioning head structure which comprises an outer sleeve shaft, at least the top end of the outer sleeve shaft is provided with an outer expansion assembly, the outer expansion assembly at least comprises two outer expansion pieces, and the multiple outer expansion pieces are annularly distributed at intervals along the axis of the outer sleeve shaft. And each outer expansion sheet is detachably assembled with the outer sleeve shaft. According to the device, the outer expansion assembly and the outer sleeve shaft are detachably assembled, when the outer expansion assembly is used and does not have rebound resilience, all the outer expansion pieces are detached one by one, then new outer expansion pieces are replaced, replacement is easy and convenient, and cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, and in particular to a workpiece machining positioning head structure. Background Technology

[0002] In the production and processing of aluminum radiators, it is necessary to fix and position the aluminum radiators to facilitate subsequent processing steps. However, existing devices either cannot reliably position and fix the aluminum radiators, or they can only clamp and fix them externally, which can damage the outer surface of the aluminum radiator.

[0003] To address the aforementioned issues, the applicant previously proposed an aluminum radiator processing and positioning device (publication number: CN106002411A). When the aluminum radiator needs to be processed and positioned, the center hole of the aluminum radiator is fitted onto the outer sleeve shaft of the positioning component. Then, the control component controls the cylinder to retract downwards. The downward retraction of the cylinder pulls the inner pull rod downwards, and the end of the inner pull rod gradually increases the force acting on the inner wall of the upper end of the outer sleeve shaft, causing the upper end of the outer sleeve shaft to expand outwards. The upper end of the outer sleeve shaft expands, and the diameter of the upper end of the outer sleeve shaft increases. The outer sleeve shaft is fixed against the inner wall of the center hole, thereby preventing the aluminum radiator from rotating and achieving the positioning and fixing of the aluminum radiator.

[0004] However, as the outer expansion plate at the top of the outer sleeve shaft repeatedly tightens and loosens, the root of the outer expansion plate will reach its fatigue limit, making it difficult for the outer expansion plate to return to its original position. If the outer expansion plate cannot return to its original position and spring back, the workpiece will be difficult to fit onto the outer sleeve shaft. When the outer expansion plate is difficult to return to its original position, the usual practice is to replace it with a new sleeve shaft. On the one hand, replacing the entire outer sleeve shaft is costly, and on the other hand, since the outer sleeve shaft is fixed to the base plate of the device and is blocked by the tapered head at the top of the inner tie rod, the replacement is also quite difficult. Utility Model Content

[0005] The purpose of this utility model is to solve the shortcomings of the existing technology, such as the high cost of replacing the entire outer sleeve shaft, and the difficulty of replacement due to the fixed outer sleeve shaft and the obstruction of the tapered head at the top of the inner tie rod. Therefore, a workpiece machining positioning head structure is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A workpiece machining positioning head structure includes an outer sleeve shaft. The outer sleeve shaft has an outer expansion assembly at least at its top end. The outer expansion assembly includes at least two outer expansion plates. A plurality of the outer expansion plates are distributed in a ring at intervals along the axis of the outer sleeve shaft. Each outer expansion plate is detachably assembled with the outer sleeve shaft.

[0008] The outer expansion piece has an integrally formed mounting post at one end near the outer sleeve shaft, and the outer sleeve shaft has mounting holes corresponding to the number and position of the outer expansion pieces at one end. The mounting post is inserted into the mounting hole, and the two are interference-fitted.

[0009] The end of the outer expansion piece away from the mounting post has an inner chamfer.

[0010] The outer expansion piece is an arc-shaped strip with the same curvature as the outer sleeve axis.

[0011] The outer sleeve shaft is an aluminum alloy stretched tube, and the mounting hole is a stretched hole along the axial direction of the outer sleeve shaft.

[0012] The outer circumference of the outer sleeve shaft has an outwardly protruding extension portion, which is integrally stretched and formed along the axial direction of the outer sleeve shaft. The mounting hole is located inside the extension portion, and the radial interface of the extension portion along the outer sleeve shaft is C-shaped.

[0013] Each end of the outer sleeve shaft is provided with an expansion component.

[0014] The workpiece machining positioning head structure proposed in this utility model has the following advantages: the outer expansion component and the outer sleeve shaft of this device are detachably assembled. When the outer expansion component loses its elasticity, each outer expansion piece can be removed one by one and then replaced with a new outer expansion piece. The replacement is simple and convenient and the cost will be reduced. Attached Figure Description

[0015] Figure 1 A schematic diagram of the single-head external expansion component structure of this utility model;

[0016] Figure 2 Schematic diagram of the dual-headed external expansion component structure of this utility model Figure 1 ;

[0017] Figure 3 Schematic diagram of the dual-headed external expansion component structure of this utility model Figure 2 ;

[0018] Figure 4 This is a schematic diagram of the radial cross-section structure of another embodiment of the outer sleeve shaft of this utility model.

[0019] In the diagram: 1. Outer shaft; 2. Mounting socket; 3. Outer expansion plate; 4. Inner chamfer; 5. Outer extension; 6. Mounting post; 7. Outer expansion assembly. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-4 A workpiece machining positioning head structure includes an outer sleeve shaft 1. The outer sleeve shaft 1 has an outer expansion component 7 at least at its top end. The outer expansion component 7 includes at least two outer expansion pieces 3. Multiple outer expansion pieces 3 are distributed in a ring at intervals along the axis of the outer sleeve shaft 1. Each outer expansion piece 3 is detachably assembled with the outer sleeve shaft 1.

[0022] The outer expansion assembly 7 and the outer sleeve shaft 1 of this device are detachably assembled. When the outer expansion assembly 7 loses its elasticity, each outer expansion piece 3 can be removed one by one and replaced with a new outer expansion piece 3. The replacement is simple and convenient and the cost will be reduced.

[0023] As an installation method, the outer expansion piece 3 has an integrally formed mounting post 6 at the end near the outer sleeve shaft 1. The outer sleeve shaft 1 has mounting holes 2 corresponding to the number and position of the outer expansion pieces 3 at the end near the outer expansion piece 3. The mounting post 6 is inserted into the mounting hole 2 and the two are interference fit. The installation is carried out by directly using a tight-fitting plug-in method, which is simple to install and can be easily removed by simply pulling it out.

[0024] To facilitate the movement of the tie rod end, the outer expansion piece 3 has an inner chamfer 4 at the end away from the mounting post 6.

[0025] The outer expansion piece 3 is an arc-shaped strip with the same curvature as the outer sleeve shaft 1, which makes it easy to adapt to the shape of the outer sleeve shaft 1.

[0026] The outer sleeve shaft 1 is an aluminum alloy drawn tube, and the mounting hole 2 is a drawn hole along the axis of the outer sleeve shaft 1. The mounting hole 2 on the outer sleeve shaft 1 of this device is drawn and does not require secondary processing.

[0027] refer to Figure 4 As another embodiment, the outer circumference of the outer sleeve shaft 1 has an outwardly protruding extension 5. The extension 5 is integrally stretched and formed along the axial direction of the outer sleeve shaft 1. The mounting hole 2 is located inside the extension 5. The radial interface of the extension 5 along the outer sleeve shaft 1 is C-shaped. The extension 5 has a C-shaped structure and a certain deformation space, which is conducive to the interference fit of the mounting post 6 into the mounting hole 2.

[0028] As another implementation, each end of the outer sleeve shaft 1 is provided with an outer expansion component 7. The two outer expansion components 7 are beneficial for the stable support of the workpiece. You can refer to the applicant's application 2024228394959, "An Aluminum Heatsink Processing Positioning Device".

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technical solution, concept, or design obtained by those skilled in the art by making equivalent substitutions or changes based on the technical solution and utility model concept disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A workpiece machining positioning head structure, comprising an outer sleeve shaft (1), characterized in that, The outer shaft (1) is provided with an outer expansion component (7) at least at its top end. The outer expansion component (7) includes at least two outer expansion pieces (3). Multiple outer expansion pieces (3) are distributed in a ring-shaped interval along the axis of the outer shaft (1). Each outer expansion piece (3) is detachably assembled with the outer shaft (1).

2. The workpiece machining positioning head structure according to claim 1, characterized in that, The outer expansion piece (3) has an integrally formed mounting post (6) at one end near the outer sleeve shaft (1). The outer sleeve shaft (1) has a mounting hole (2) at one end near the outer expansion piece (3) that corresponds to the number and position of the outer expansion pieces (3). The mounting post (6) is inserted into the mounting hole (2) and the two are interference fit.

3. The workpiece machining positioning head structure according to claim 2, characterized in that, The outer expansion piece (3) has an inner chamfer (4) at the end away from the mounting post (6).

4. The workpiece machining positioning head structure according to claim 2, characterized in that, The outer expansion piece (3) is an arc-shaped strip with the same curvature as the outer sleeve shaft (1).

5. A workpiece machining positioning head structure according to any one of claims 2-4, characterized in that, The outer sleeve shaft (1) is an aluminum alloy stretch tube, and the mounting hole (2) is a stretch hole along the axial direction of the outer sleeve shaft (1).

6. The workpiece machining positioning head structure according to claim 5, characterized in that, The outer circumference of the outer sleeve shaft (1) has an outwardly protruding extension (5), which is integrally stretched along the axial direction of the outer sleeve shaft (1). The mounting hole (2) is located inside the extension (5), and the radial interface of the extension (5) along the outer sleeve shaft (1) is C-shaped.

7. A workpiece machining positioning head structure according to any one of claims 1-4 and 6, characterized in that, Each end of the outer sleeve shaft (1) is provided with an outer expansion component (7).

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