Machining tool for turning head of hollow piston

Abstract

The hollow piston head turning machining tool comprises a hydraulic chuck, a positioning block and a chuck chuck, the positioning block and the chuck chuck are located on the clamping face of the hydraulic chuck, the positioning block is fixedly arranged on the hydraulic chuck, and a profiling positioning structure is arranged at the end, close to the chuck center of the hydraulic chuck, of the positioning block. The positioning block is used for positioning a hollow piston, the hollow piston is located in the center of the chuck, and the chuck chuck is installed on the hydraulic chuck in the mode that the chuck chuck can be driven by hydraulic force of the hydraulic chuck to move in the direction close to or away from the positioning block in a directional mode. And the end surface R of the head part of the hollow piston is clamped by matching with the profiling positioning structure. The machining tool for turning the head of the hollow piston is high in working efficiency and good in clamping stability, the machining quality of products can be ensured, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hollow piston processing tooling, in particular to a hollow piston lathe head processing tooling. Background Art

[0002] The automobile air-conditioning compressor is the heart of the automobile air-conditioning refrigeration system. It plays the role of compressing and transporting refrigerant vapor. It is mainly divided into fixed displacement and variable displacement. The variable displacement compressor can automatically adjust the power output according to the set temperature.

[0003] At present, the processing of the variable displacement hollow piston head on the automobile air-conditioning compressor is to first place the piston on the positioning tooling and then tighten it manually. This has the problems of low production efficiency and high labor intensity. In addition, this fixing method also has the problem of unstable products, which affects the processing quality, resulting in a high product defect rate and some products cannot be used during assembly. Utility Model Content

[0004] One advantage of the utility model is that it provides a hollow piston car head processing tool, in which the hollow piston can be quickly placed with the contoured positioning structure on the positioning block as the positioning reference, and pressing the hydraulic switch clamping button on the hydraulic chuck can drive the chuck clamp to cooperate with the contoured positioning structure to quickly clamp and fix the head R end face of the hollow piston, thereby providing a uniform hydraulic clamping force to the hollow piston, ensuring the stability of the hollow piston, thereby improving the product processing quality and yield rate, and reducing labor intensity.

[0005] One advantage of the utility model is that it provides a hollow piston lathe head processing tool, wherein the positioning block can be quickly and accurately positioned and installed through the cooperation of the arc-shaped limit groove and the arc-shaped step, which can further improve work efficiency, wherein the semicircular positioning groove can be quickly and accurately positioned and installed with the contour positioning structure, and at the same time, the corresponding contour positioning structure can be replaced when processing hollow pistons of different specifications, and the application range is wide, wherein the positioning block can be quickly and accurately installed on the chuck block by using the existing two-jaw hydraulic chuck through the cooperation of the chuck block and the positioning groove.

[0006] In order to achieve at least one of the above advantages of the utility model, the utility model provides a hollow piston lathe head processing tool, including a hydraulic chuck and a positioning block and a chuck collet located on the clamping surface of the hydraulic chuck, wherein the positioning block is fixedly arranged on the hydraulic chuck, and the positioning block is provided with a contour positioning structure at one end of the positioning block close to the chuck center of the hydraulic chuck to position the hollow piston and make the hollow piston located in the center of the chuck, wherein the chuck collet is installed on the hydraulic chuck in a manner that it can be driven by the hydraulic pressure of the hydraulic chuck to move in a direction close to or away from the positioning block, so as to cooperate with the contour positioning structure to clamp the head R end face of the hollow piston.

[0007] According to one embodiment of the utility model, the hydraulic chuck is provided with an arc-shaped limit groove at the center of the chuck, the positioning block is provided with an arc-shaped step matching the arc-shaped limit groove, and a plurality of bolt holes are opened on the outer side of the arc-shaped step, a first fastening bolt is installed in the bolt hole, and the positioning block is connected to the hydraulic chuck via the first fastening bolt.

[0008] According to one embodiment of the utility model, the positioning block is provided with a semicircular positioning groove near the center on a side away from the hydraulic chuck, and the semicircular positioning groove is provided with a threaded through hole vertically on the groove wall. The contoured positioning structure is installed in the semicircular positioning groove, and a connecting threaded hole is provided corresponding to the threaded through hole. The positioning block passes through the threaded through hole through a second fastening bolt and is threadedly connected to the connecting threaded hole.

[0009] According to one embodiment of the utility model, the hydraulic chuck is implemented as a two-jaw chuck having two chuck blocks relatively distributed up and down along the same straight line direction, the chuck chuck is arranged on the chuck block near the top, and the positioning block is provided with a positioning groove matching the chuck block near the bottom on one side near the hydraulic chuck.

[0010] These and other purposes, features and advantages of the present invention are fully reflected in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A three-dimensional structural schematic diagram of a hollow piston lathe head processing tooling according to a preferred embodiment of the present application is shown.

[0012] Figure 2 A schematic diagram of the exploded structure of a hollow piston turning head processing tooling according to a preferred embodiment of the present application is shown.

[0013] Figure 3 A schematic diagram of the three-dimensional structure of the positioning block in the present application is shown. DETAILED DESCRIPTION

[0014] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0015] Those skilled in the art should understand that, in the disclosure of the specification, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which 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. Therefore, the above terms should not be understood as limiting the present invention.

[0016] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0017] refer to Figures 1 to 3 A hollow piston lathe head processing tool according to a preferred embodiment of the utility model will be described in detail below, wherein the hollow piston lathe head processing tool comprises a hydraulic chuck 10 and a positioning block 20 and a chuck chuck 30 located on the clamping surface of the hydraulic chuck, wherein the positioning block 20 is fixedly arranged on the hydraulic chuck 10, and the positioning block 20 is provided with a contoured positioning structure 21 at one end of the positioning block 20 close to the chuck center of the hydraulic chuck 10 to position the hollow piston and make the hollow piston located at the center of the chuck, wherein the chuck chuck 30 is capable of being clamped by the hydraulic The chuck 10 is installed on the hydraulic chuck 10 in a manner of being driven by the hydraulic pressure to move in a direction close to or away from the positioning block 20, so as to cooperate with the profiling positioning structure 21 to clamp the R end face of the head of the hollow piston. In this way, by utilizing the existing hydraulic chuck structure and taking the profiling positioning structure 21 on the positioning block 20 as the positioning reference, the R end face of the head of the hollow piston can be clamped quickly and accurately through the chuck clamp 30, thereby facilitating and quickly processing the head of the hollow piston with high work efficiency. At the same time, the hydraulic clamping force is stable and uniform, which can ensure the processing quality, improve the yield rate, and reduce labor intensity.

[0018] According to the Baidu Encyclopedia entry "Hydraulic chuck", a hydraulic chuck is a clamp controlled by a hydraulic system, used to clamp workpieces on the spindle of a CNC lathe. Working principle: We give a hydraulic chuck locking command on the system, and the system will send the command to the PLC - the PLC controls the relay to act - the relay drives the solenoid valve to act - the direction of the hydraulic oil movement then changes - drives the rotary cylinder piston to move forward and backward - then drives the pull tube - the pull tube is connected to the hydraulic chuck - a wedge-shaped mechanism inside the chuck converts the axial motion into radial motion.

[0019] That is to say, a hollow piston is placed on the hydraulic chuck with the fixed positioning block 20 as the positioning reference, and the chuck clamp 30 is driven by hydraulic pressure to move in a directional manner, thereby achieving the tooling to clamp the hollow piston or release the hollow piston.

[0020] In one embodiment, the hydraulic chuck 10 is provided with an arc-shaped limit groove 101 at the center of the chuck, and the positioning block 20 is provided with an arc-shaped step 22 that matches the arc-shaped limit groove 101, so that the positioning block 20 can be quickly and accurately installed on the hydraulic chuck 10 through the cooperation of the arc-shaped limit groove 101 and the arc-shaped step 22, and the working efficiency is high. In addition, the positioning block 20 is also provided with a plurality of bolt holes 201 on the outer side of the arc-shaped step 22, and a first fastening bolt is installed in the bolt hole 201, and the positioning block 20 is connected to the hydraulic chuck 10 through the first fastening bolt.

[0021] Further preferably, the positioning block 20 is provided with a semicircular positioning groove 202 near the center on the side away from the hydraulic chuck 10, and the semicircular positioning groove 202 is provided with a threaded through hole 203 vertically on the groove wall, wherein the contoured positioning structure 21 is installed in the semicircular positioning groove 202, and a connecting threaded hole 204 is provided corresponding to the threaded through hole 203, and the positioning block 20 is penetrated by a second fastening bolt through the threaded through hole 203 and threadedly connected to the connecting threaded hole 204, so that the contoured positioning structure 21 can be quickly and accurately placed through the semicircular positioning groove 202 to form a positioning reference, and then the contoured positioning structure 21 and the positioning block 20 are connected together by the second fastening bolt.

[0022] Further preferably, the hydraulic chuck 10 is implemented as a two-jaw chuck, having two chuck blocks 11 relatively distributed in the same straight line direction, wherein the chuck chuck 30 is arranged on the chuck block 11 near the top, and wherein the positioning block 20 is provided with a positioning groove 205 on the side close to the hydraulic chuck 10 and matched with the chuck block 11 near the bottom, thereby the chuck block 11 on the existing hydraulic chuck 10 can be utilized, and then a double positioning reference is formed based on the cooperation of the arc-shaped limit groove 101 and the arc-shaped step 21 and the cooperation of the positioning groove 205 and the chuck block 11, with high positioning accuracy, and at the same time, there is no need to make many improvements to the existing hydraulic chuck, so that the tooling is easier to manufacture and use.

[0023] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. Hollow piston lathe head processing tooling, characterized in that: It comprises a hydraulic chuck and a positioning block and a chuck collet located on the clamping surface of the hydraulic chuck, wherein the positioning block is fixedly arranged on the hydraulic chuck, and the positioning block is provided with a contour positioning structure at one end close to the chuck center of the hydraulic chuck to position a hollow piston and make the hollow piston located at the center of the chuck, wherein the chuck collet is installed on the hydraulic chuck in a manner that it can be driven by the hydraulic pressure of the hydraulic chuck to move in a direction close to or away from the positioning block, so as to cooperate with the contour positioning structure to clamp the head R end face of the hollow piston.

2. The hollow piston lathe head processing tool as claimed in claim 1, characterized in that: The hydraulic chuck is provided with an arc-shaped limit groove at the center of the chuck, the positioning block is provided with an arc-shaped step matching the arc-shaped limit groove, and a plurality of bolt holes are opened on the outer side of the arc-shaped step, the first fastening bolts are installed in the bolt holes, and the positioning block is connected to the hydraulic chuck through the first fastening bolts.

3. The hollow piston lathe head processing tool as claimed in claim 2, characterized in that: The positioning block is provided with a semicircular positioning groove near the center on a side away from the hydraulic chuck, and a threaded through hole is vertically provided in the groove wall of the semicircular positioning groove. The contoured positioning structure is installed in the semicircular positioning groove, and a connecting threaded hole is provided corresponding to the threaded through hole. The positioning block passes through the threaded through hole through a second fastening bolt and is threadedly connected to the connecting threaded hole.

4. The hollow piston lathe head processing tool as claimed in claim 2, characterized in that: The hydraulic chuck is implemented as a two-jaw chuck, having two chuck blocks relatively distributed up and down along the same straight line direction, the chuck chuck is arranged on the chuck block near the top, and the positioning block is provided with a positioning groove matching the chuck block near the bottom on one side near the hydraulic chuck.

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