Positioning block suitable for finish turning machining of scroll compressor rotary body components of various specifications

Abstract

The utility model provides a locating block suitable for finish turning of scroll compressor rotary body parts of various specifications, which comprises a locating block arranged on a lathe four-jaw hydraulic chuck and attached to a locating face of the hydraulic chuck, a through hole and an annular groove are sequentially formed in the locating block from inside to outside in the radial direction, the through hole is formed in the center of the locating block, and the annular groove is formed in the center of the locating block. The groove is concentric with the through hole; the positioning block is further provided with a notch, an installation part used for being installed on the hydraulic chuck and a positioning part used for achieving circumferential positioning, and the notch is formed in the outer edge of the positioning block. Original positioning blocks of three parts are changed into positioning blocks of one type, the requirement for finish turning of rotary body parts of scroll compressors of various specifications can be met, time for tool switching and workpiece debugging is shortened, and production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixture technology, and in particular to a positioning block suitable for precision turning of rotating parts of various specifications of scroll compressors. Background Technology

[0002] Currently, when precision machining various rotary components of scroll compressors of different specifications on a lathe with a large-stroke four-jaw chuck, the locating blocks need to be switched and adjusted for each machining operation due to differences in workpiece shape and outer diameter, which is time-consuming and labor-intensive. To address the problems existing in the current tooling fixtures, it is essential to design a locating fixture suitable for machining rotary components of scroll compressors of various specifications, thereby overcoming the existing technical limitations. Utility Model Content

[0003] To address the aforementioned technical problems, a positioning block suitable for precision turning of rotary components in various specifications of scroll compressors is provided. This block features a simple structure, ease of operation, reduced fixture switching time, and improved production efficiency. The technical means employed in this invention are as follows:

[0004] A positioning block suitable for precision turning of rotary parts of various specifications of scroll compressors includes: a positioning block placed on a four-jaw hydraulic chuck of a lathe and in contact with the positioning surface of the hydraulic chuck, wherein the positioning block is provided with a through hole and an annular groove in the radial direction from the inside to the outside, the through hole is opened at the center of the positioning block, and the groove is concentric with the through hole;

[0005] The positioning block is also provided with a notch, a mounting part for mounting with a hydraulic chuck, and a positioning part for achieving circumferential positioning. The notch is provided on the outer edge of the positioning block.

[0006] Furthermore, the mounting part includes multiple bolt holes on the positioning block, through which the positioning block and the hydraulic chuck are mounted.

[0007] Furthermore, the plurality of bolt holes are evenly distributed around the center of the positioning block in a circular pattern, and are located between the through hole and the annular groove in the radial direction.

[0008] Furthermore, the bolt holes are provided in six places.

[0009] Furthermore, the positioning part is a threaded hole opened at the bottom of the groove, and an internal hexagon bolt is fitted into the threaded hole to achieve the positioning connection between the positioning block and the workpiece through the threaded hole and the internal hexagon bolt.

[0010] Furthermore, the notches are provided in multiple quantities and are evenly distributed around the circumference.

[0011] Furthermore, there are four notches, all of which are U-shaped.

[0012] Furthermore, the positioning block has a circular structure with a first end face and a second end face on both sides. The first end face is in contact with the positioning surface of the hydraulic chuck, the groove is formed on the second end face, and the through hole penetrates through the first end face and the second end face.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. The positioning block of this utility model can meet the needs of precision machining positioning of various rotating parts of different specifications, avoiding the problem of frequent replacement of positioning blocks and frequent processing and debugging when machining workpieces of different specifications on a lathe with a large stroke four-jaw hydraulic chuck.

[0015] 2. This utility model has the advantages of simple structure, easy operation, saving time for fixture switching, improving production efficiency and reducing maintenance and replacement costs.

[0016] Based on the above reasons, this utility model can be widely promoted in fields such as workpiece positioning. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a side view of the present invention.

[0020] Figure 3 The diagram shows the positioning of different specifications of the components of this utility model, where (a) is coarse centering using the through hole of the positioning block, (b) is coarse centering using the inner diameter of the groove of the positioning block, (c) is coarse centering using the outer diameter of the groove of the positioning block, and (d) is circumferential positioning of the workpiece using the threaded hole of the positioning block.

[0021] In the diagram: 1. Bolt hole; 2. Notch; 3. Threaded hole; 4. Groove; 5. Through hole; 6. Positioning block. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] To address the problems existing in current production, this utility model provides a positioning block suitable for precision turning of rotary components of scroll compressors of various specifications, relating to the field of positioning fixtures suitable for precision turning of rotary components of scroll compressors of various specifications.

[0024] This utility model discloses a positioning block suitable for precision turning of rotary components of various specifications of scroll compressors. It includes a positioning block 6 placed on a four-jaw hydraulic chuck on a lathe and abutting the chuck's positioning surface. Along the radial direction of the positioning block 6, from the inside out, are sequentially provided a through hole 5 (coarse centering hole for the component boss), bolt holes 1 for mounting the positioning block 6 to the hydraulic chuck, a groove 4 for axial positioning and coarse centering of the rotary component, a threaded hole 3 for circumferential positioning, and a notch 2 for avoiding contact with the hydraulic four-jaw chuck. The through hole 5 can be used for coarse centering of the component with the boss using its inner diameter; the bottom of the groove 4 can provide axial positioning of the component, and the inner and outer diameters of the groove 4 can be used for coarse centering using the inner and outer diameters of the component, respectively; the threaded hole 3 for circumferential positioning is located at the bottom of the groove 4, allowing an internal hexagonal bolt to be screwed into the threaded hole 3 for circumferential positioning of the component.

[0025] Because the outer diameter and shape of the rotating parts of various scroll compressors differ significantly, each part requires a different tooling for precision machining on the same CNC lathe, necessitating tooling switching and resulting in low efficiency. To achieve the goal of using a single positioning block for axial positioning of multiple workpieces, rough centering of workpieces, and smooth clamping by a four-jaw hydraulic chuck, the positioning block 6 is designed with a central through hole 5 and an external groove 4, based on the external shape of the rotating part. The inner diameter of the central through hole 5, as well as the inner and outer diameters of the groove 4, are used for rough centering of different workpieces, while the bottom of the groove 4 provides axial positioning of the workpiece.

[0026] The positioning block 6 has a through hole 5 in the middle, which is used to coarsely center the part with the boss. The boss is inserted into the through hole 5.

[0027] The through hole 5 has a groove 4 on its outside. The groove 4 is an annular groove and concentric with the through hole 5. The inner diameter of the groove 4 can be roughly centered using the inner hole of the workpiece, and the outer diameter of the groove 4 can be roughly centered using the outer circle of the workpiece. That is, the inner and outer diameters of the groove can be roughly centered for different workpieces. The bottom of the groove 4 can be axially positioned using the end face of the workpiece.

[0028] The bottom of the groove 4 has a threaded hole 3, into which an internal hex bolt can be screwed to circumferentially position a non-circular rotating part. The positioning block 6 and the non-circular rotating part are positioned and connected through the threaded hole 3 and the internal hex bolt.

[0029] The outer edge of the positioning block 6 has four clearance notches 2, which ensure that the lathe's four-jaw chuck can move within a large range without interfering with the positioning block 6. The four clearance notches 2 are evenly distributed around the circumference. The notches 2 have a U-shaped structure.

[0030] The six bolt holes 1 on the positioning block 6 are for mounting and fixing the positioning block 6. The positioning block 6 is installed with the hydraulic chuck through the bolt holes 1 and bolts. The six bolt holes 1 are evenly distributed in a circle around the center of the positioning block 6 and are located between the through hole 5 and the annular groove 4 in the radial direction.

[0031] The positioning block 6 has a circular structure with a first end face and a second end face on both sides. The first end face fits into the positioning surface of the hydraulic chuck, and the groove 4 is opened on the second end face. The bolt hole 1 and the through hole 5 both penetrate the first end face and the second end face.

[0032] This invention replaces the original three types of positioning blocks with one type, which can meet the precision turning requirements of rotating parts of various specifications of scroll compressors, reducing the time for tooling switching and workpiece debugging, and improving production efficiency.

[0033] For components with boss structures, coarse centering of the workpiece can be achieved by placing the workpiece boss into the through hole 5 of the positioning block 6. Figure 3 As shown in (a); for workpieces with inner holes, the inner hole of the workpiece is fitted into the inner diameter of the groove 4 of the positioning block to achieve coarse centering of the workpiece, as shown in (a). Figure 3 As shown in (b); for workpieces with only an outer diameter, placing the workpiece into the outer diameter of the positioning hole groove 4 achieves coarse centering of the workpiece, as shown in (b). Figure 3 As shown in (c); by screwing the screw into the threaded hole 3 of the positioning block 6, the workpiece can be circumferentially positioned, ensuring that the clamping part of the workpiece is within the clearance notch 2 of the positioning block 6 when the workpiece is placed. Figure 3 As shown in (d) in the figure.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A positioning block suitable for precision turning of rotating parts of scroll compressors of various specifications, characterized in that, include: A positioning block (6) is placed on a four-jaw hydraulic chuck of a lathe and is in contact with the positioning surface of the hydraulic chuck. The positioning block (6) is provided with a through hole (5) and an annular groove (4) in the radial direction from the inside to the outside. The through hole (5) is opened at the center of the positioning block (6), and the groove (4) is concentric with the through hole (5). The positioning block (6) is also provided with a notch (2), a mounting part for mounting with a hydraulic chuck, and a positioning part for achieving circumferential positioning. The notch (2) is opened on the outer edge of the positioning block (6).

2. The positioning block according to claim 1, applicable to the precision turning of rotary parts of scroll compressors of various specifications, is characterized in that, The mounting part includes multiple bolt holes (1) on the positioning block (6), and the positioning block (6) is installed with the hydraulic chuck through the bolt holes (1) and bolts.

3. The positioning block according to claim 2, applicable to the precision turning of rotary parts of scroll compressors of various specifications, is characterized in that, The plurality of bolt holes (1) are evenly distributed around the center of the positioning block (6) and are located between the through hole (5) and the annular groove (4) in the radial direction.

4. The positioning block for precision turning of rotary components of scroll compressors of various specifications as described in claim 2 or 3, characterized in that, The bolt holes (1) are provided in six places.

5. The positioning block according to claim 1, applicable to the precision turning of rotary parts of scroll compressors of various specifications, is characterized in that, The positioning part is a threaded hole (3) opened at the bottom of the groove (4). An internal hexagon bolt is connected in the threaded hole (3). The positioning block (6) and the workpiece are positioned and connected through the threaded hole (3) and the internal hexagon bolt.

6. The positioning block according to claim 1, applicable to the precision turning of rotary components of scroll compressors of various specifications, is characterized in that, The notch (2) has multiple notches, which are evenly distributed around the circumference.

7. The positioning block according to claim 6, applicable to the precision turning of rotary parts of scroll compressors of various specifications, is characterized in that, There are four gaps (2), all of which are U-shaped.

8. The positioning block according to claim 1, applicable to the precision turning of rotary parts of scroll compressors of various specifications, is characterized in that, The positioning block (6) has a circular structure with a first end face and a second end face on both sides. The first end face is in contact with the positioning surface of the hydraulic chuck. The groove (4) is formed on the second end face, and the through hole (5) penetrates the first end face and the second end face.

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