Positioning and clamping device for compressor body

Abstract

The utility model provides a positioning and clamping device for a compressor body, which comprises a bottom plate, a front end inner hole positioning mechanism, a rear end inner hole positioning mechanism, an auxiliary moving mechanism, a pressing plate mechanism, a first positioning and supporting mechanism and a second positioning and supporting mechanism, a first chuck is mounted on the chuck seat; the rear end inner hole positioning mechanism comprises a tailstock arranged on the other side of the bottom plate, and the second chuck is installed on the tailstock in a matched mode through a connecting shaft. The circle center of the first chuck and the circle center of the second chuck are located on the same straight line. The auxiliary moving mechanism is movably connected with the bottom plate and the second chuck. The pressing plate mechanism is matched with the first positioning and supporting mechanism and located at the position, corresponding to the rear end of the workpiece, of the bottom plate. The second positioning and supporting mechanisms are located at the positions, corresponding to the front ends of the workpieces, of the bottom plate.

Description

Technical Field

[0001] This utility model relates to the field of positioning devices for machining, and in particular to a positioning and clamping device for a compressor body. Background Technology

[0002] During the machining of compressor bodies, precise positioning and clamping are essential to ensure accurate operation. The machining of compressor bodies typically includes machining the inner holes at both ends and the four sides of the workpiece. Currently, there is a lack of dedicated positioning and clamping devices for compressor bodies; conventional operation involves using general-purpose fixtures. However, this method of using general-purpose fixtures has several drawbacks: the stability and consistency of clamping different batches of workpieces with these fixtures is difficult to guarantee. Furthermore, when machining with general-purpose fixtures, simultaneous machining of all four sides is not possible; multiple adjustments and repositioning are required to machine different areas of the perimeter, resulting in low production efficiency. Utility Model Content

[0003] In order to solve the above problems, the present invention aims to provide a positioning and clamping device for a compressor body.

[0004] To achieve the above objectives, this utility model provides a positioning and clamping device for a compressor body, comprising: a base plate, a front end inner hole positioning mechanism, a rear end inner hole positioning mechanism, an auxiliary moving mechanism, a pressure plate mechanism, a first positioning support mechanism, and a second positioning support mechanism. The front end inner hole positioning mechanism includes a chuck seat disposed on one side of the base plate, on which a first chuck is mounted. The rear end inner hole positioning mechanism includes a tailstock disposed on the other side of the base plate, on which a second chuck is mounted via a connecting shaft. The centers of the first and second chucks are on the same straight line. The auxiliary moving mechanism is movably connected to the base plate and the second chuck. The pressure plate mechanism is configured to cooperate with the first positioning support mechanism and is located on the base plate at a position corresponding to the rear end of the workpiece. At least one second positioning support mechanism is provided, located on the base plate at a position corresponding to the front end of the workpiece.

[0005] Furthermore, the positioning and clamping device for the compressor body provided by this utility model may also have the following features: a central through hole is provided on the tailstock, one end of the connecting shaft is inserted into the central through hole, and the other end of the connecting shaft is fixed to the second chuck.

[0006] Furthermore, the positioning and clamping device for the compressor body provided by this utility model may also have the following features: it further includes a chuck positioning assembly, which includes a connecting bolt, a movable support plate, and a support bolt; one end of the connecting bolt is fixed to the tailstock, and the other end protrudes from the front end face of the tailstock; the two ends of the movable support plate are respectively provided with a first bolt hole and a second bolt hole, and the movable support plate is connected to the connecting bolt through the first bolt hole and rotates around the connecting bolt; one end of the support bolt is installed and fixed in the second bolt hole of the movable support plate, and the other end abuts against the end face of the second chuck.

[0007] Furthermore, the positioning and clamping device for the compressor body provided by this utility model may also have the following features: the first chuck and the second chuck are three-jaw chucks.

[0008] Furthermore, the positioning and clamping device for the compressor body provided by this utility model may also have the following features: the auxiliary moving mechanism includes a chuck drive pin, a hinge seat, and a connecting rod; the hinge seat is fixed on the base plate; the lower end of the connecting rod is hinged to the hinge seat, and a long strip-shaped through groove is provided in the middle of the connecting rod; the chuck drive pin passes through the long strip-shaped through groove and is installed and fixed on the side of the second chuck.

[0009] Furthermore, the positioning and clamping device for the compressor body provided by this utility model may also have the following features: the pressure plate mechanism includes a support base, connecting bolts, a pressure plate, and a clamping bolt; the support base is fixed on the base plate; one end of the pressure plate is rotatably connected to the support base through the connecting bolts; and the clamping bolt is inserted into a threaded hole installed at the other end of the pressure plate.

[0010] Furthermore, the positioning and clamping device for the compressor body provided by this utility model may also have the following features: the first positioning support mechanism includes a first support block, the first support block has a convex structure, the top of the first support block is provided with a threaded hole, and a first support bolt is installed in the threaded hole; the clamping bolt and the first support bolt respectively abut against the upper surface and lower surface of the side boss of the workpiece.

[0011] Furthermore, the positioning and clamping device for the compressor body provided by this utility model may also have the following features: the support base is composed of a base and a vertical rod, the support base has an overall L-shaped structure, the base is fixed on the bottom plate, the vertical rod is fixed on the base, the top of the vertical rod is provided with a vertical rod internal thread hole, and the connecting bolt is installed in conjunction with the vertical rod internal thread hole.

[0012] Furthermore, the positioning and clamping device for the compressor body provided by this utility model may also have the following features: the second positioning support mechanism includes a second support block, the second support block has a convex structure, and a threaded hole is opened on the top of the second support block, in which a second support bolt is installed.

[0013] The function and effects of this utility model:

[0014] This utility model provides a positioning and clamping device for compressor bodies. Through the cooperation of a front-end inner hole positioning mechanism and a rear-end inner hole positioning mechanism, it enables self-centering clamping and machining of the inner holes at both ends of the workpiece. Furthermore, the inclusion of a pressure plate mechanism, a first positioning support mechanism, and a second positioning support mechanism enhances clamping stability and effectively improves machining quality. Additionally, an auxiliary moving mechanism facilitates easy adjustment of the chuck's front and rear positions. This positioning and clamping device for compressor bodies can be used for simultaneous machining of all four sides of the workpiece, reducing the number of tooling changes and improving production efficiency. This positioning and clamping device is a specialized clamping fixture for compressor bodies; compared to existing general-purpose clamping fixtures, it improves the stability and consistency of clamping different batches of workpieces. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the positioning and clamping device for the compressor body in an embodiment of this utility model;

[0016] Figure 2 This is a schematic diagram of the usage state of the positioning and clamping device for the compressor body in an embodiment of this utility model;

[0017] Figure 3 This is a schematic diagram of the usage state of the positioning and clamping device for the compressor body from another perspective in an embodiment of this utility model. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the following embodiments, in conjunction with the accompanying drawings, will specifically illustrate the technical solution of this utility model.

[0019] See Figures 1 to 3 This embodiment provides a positioning and clamping device for a compressor body 100 (hereinafter referred to as workpiece). The device includes: a base plate 1, a front end inner hole positioning mechanism, a rear end inner hole positioning mechanism, an auxiliary moving mechanism, a pressure plate mechanism, a first positioning support mechanism 11, a second positioning support mechanism 12, and a chuck positioning assembly 7.

[0020] In this embodiment, the base plate 1 is a rectangular plate, and several bolt holes are provided on the base plate 1 for bolting and installing other components.

[0021] The front-end internal hole positioning mechanism includes a chuck seat 2, fastening bolts 3, and a first chuck 4. The chuck seat 2 is an integral structure composed of a vertical plate 2a, a base plate 2b, and two symmetrically arranged support plates 2c, welded or bolted together. The chuck seat 2 is fixedly mounted on one side of the base plate 1. The first chuck 4 is mounted on the chuck seat 2 and locked in place by the fastening bolts 3. The first chuck 4 is a commercially available three-jaw chuck used for automatic centering and clamping of the workpiece's front-end internal hole.

[0022] The rear-end inner hole positioning mechanism includes: a tailstock 5, a fastening bolt 6, a second chuck 8, and a connecting shaft 15. The tailstock 5 is fixedly mounted on the other side of the base plate 1. The tailstock 5 has a central through hole, one end of which is inserted into the central through hole, and the other end of the connecting shaft 15 is fixed to the second chuck 8, so that the second chuck 8 is mounted on the tailstock 5 through the connecting shaft 15. The fastening bolt 6 is used to lock and fix the connecting shaft 15 after the position of the second chuck 8 is adjusted. Specifically, the fastening bolt is screwed downward into the locking hole and extends into contact with the surface of the connecting shaft 15 to achieve locking and fixation. The second chuck 8 is a commercially available three-jaw chuck used for automatic centering and clamping of the rear-end inner hole of the workpiece. The center of the first chuck 4 and the center of the second chuck 8 are on the same straight line to ensure the coaxiality of the inner holes on both sides of the workpiece to be processed.

[0023] The auxiliary moving mechanism includes a chuck drive pin 10, a hinge seat 16, and a connecting rod 9. The hinge seat 16 is fixed to the base plate 1. The lower end of the connecting rod 9 is hinged to the hinge seat 16, allowing the connecting rod 9 to swing around the hinge axis. A long strip-shaped through slot is provided in the middle of the connecting rod 9. The chuck drive pin 10 is engaged with the long strip-shaped through slot on the connecting rod 9, and the chuck drive pin 10 is mounted and fixed to the side of the second chuck 8.

[0024] With the second chuck 8 unlocked, the operator can swing the connecting rod 9 to move the second chuck 8 back and forth as needed, adjusting its position for better workpiece clamping. As the second chuck 8 moves back and forth, the connecting shaft 15 is moved back and forth within the central through hole of the tailstock 5. After the workpiece is clamped, the operator adjusts the fastening bolts 6 to lock the connecting shaft 15, thereby locking the second chuck 8.

[0025] See Figure 1 and Figure 3The chuck positioning assembly 7 includes a connecting bolt 71, a movable support plate 72, and a support bolt 73. The connecting bolt 71 is an internal hexagonal bolt, with one end fixed to the tailstock 5 and the other end protruding from the front face of the tailstock 5. The movable support plate 72 has a first bolt hole and a second bolt hole at both ends. The movable support plate 72 is connected to the connecting bolt 71 through the first bolt hole and rotates around the connecting bolt 71. The support bolt 73 is an external hexagonal bolt, with its threaded end fixed in the second bolt hole of the movable support plate 72, and its bolt head abutting against the end face of the second chuck 8. After the workpiece is mounted by the positioning chuck, the chuck positioning assembly 7 provides support to prevent the second chuck from moving.

[0026] The pressure plate mechanism is configured in conjunction with the first positioning support mechanism 11 and is located on the base plate 1 at the position corresponding to the rear end of the workpiece 100.

[0027] See Figure 1 The pressure plate mechanism includes a support base 13, connecting bolts 17, a pressure plate 14, and clamping bolts 18. The support base is fixed to the base plate 1. The support base consists of a base 13a and a vertical rod 13b. The support base has an overall L-shaped structure. The base 13a is fixed to the base plate 1, and the vertical rod 13b is fixed to the base. The top of the vertical rod has an internal threaded hole, and the connecting bolts 17 are fitted into the internal threaded hole. One end of the pressure plate 14 is rotatably connected to the vertical rod 13b via the connecting bolts 17. Rotating the pressure plate allows for easy removal or placement of the workpiece. The clamping bolts 18 are inserted into the threaded hole at the other end of the pressure plate 14.

[0028] See Figure 2 The first positioning support mechanism 11 includes a first support block 11a, which has a convex shape. A threaded hole is formed at the top of the first support block 11a, and a first support bolt 11b is installed in this threaded hole. The clamping bolt 18 and the first support bolt 11b abut against the upper and lower surfaces of the side boss 100a of the workpiece 100, respectively. The first support bolt 11b is an external hexagonal bolt. The first support bolt 11b can adjust its insertion depth into the threaded hole through its threaded connection with the first support block 11a, thereby adjusting the support height.

[0029] See Figure 1At least one second positioning support mechanism 12 is provided, configured according to requirements. The second positioning support mechanism 12 is located on the base plate 1 at the position corresponding to the front end of the workpiece 100, and serves to provide auxiliary support for the lower surface of the front end of the workpiece. The second positioning support mechanism 12 includes a second support block 12a, which has a convex shape. A threaded hole is provided at the top of the second support block 12a, in which a second support bolt 12b is installed. The second support bolt 12b is an external hexagonal bolt. The depth to which the second support block 12a is inserted into the threaded hole can be adjusted through the threaded connection with the second support block 12a, thereby adjusting the support height.

[0030] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

Claims

1. A positioning and clamping device for a compressor body, characterized in that, include: Base plate, front inner hole positioning mechanism, rear inner hole positioning mechanism, auxiliary moving mechanism, pressure plate mechanism, first positioning support mechanism, and second positioning support mechanism. The front end inner hole positioning mechanism includes a chuck seat disposed on one side of the base plate, and a first chuck is mounted on the chuck seat; The rear end inner hole positioning mechanism includes a tailstock disposed on the other side of the base plate, and the second chuck is mounted on the tailstock via a connecting shaft. The center of the first chuck and the center of the second chuck are on the same straight line; The auxiliary moving mechanism is connected to the base plate and the second chuck, respectively. The pressure plate mechanism is configured in conjunction with the first positioning support mechanism and is located on the base plate at the position corresponding to the rear end of the workpiece; The second positioning support mechanism consists of at least one set, located on the base plate at the position corresponding to the front end of the workpiece.

2. The positioning and clamping device for a compressor body as described in claim 1, characterized in that: in, The tailstock has a central through hole, one end of the connecting shaft is inserted into the central through hole, and the other end of the connecting shaft is fixed to the second chuck.

3. The positioning and clamping device for a compressor body as described in claim 2, characterized in that: It also includes a chuck positioning assembly, which includes connecting bolts, a movable support plate, and support bolts; One end of the connecting bolt is fixed to the tailstock, and the other end protrudes from the front end face of the tailstock; The movable support plate has a first bolt hole and a second bolt hole at its two ends, and the movable support plate is connected to the connecting bolt through the first bolt hole and rotates around the connecting bolt. One end of the support bolt is installed and fixed in the second bolt hole of the movable support plate, and the other end abuts against the end face of the second chuck.

4. The positioning and clamping device for a compressor body as described in claim 1, characterized in that: in, The first chuck and the second chuck are three-jaw chucks.

5. The positioning and clamping device for a compressor body as described in claim 1, characterized in that: in, The auxiliary moving mechanism includes a chuck drive pin, a hinge seat, and a connecting rod; The hinge seat is fixed to the base plate; The lower end of the connecting rod is hinged to the hinge seat, and a long strip-shaped through groove is provided in the middle of the connecting rod. The chuck drive pin passes through the elongated slot and is fixed to the side of the second chuck.

6. The positioning and clamping device for a compressor body as described in claim 1, characterized in that: in, The pressure plate mechanism includes a support base, connecting bolts, a pressure plate, and clamping bolts; The support base is fixed to the base plate; One end of the pressure plate is rotatably connected to the support base via connecting bolts; The clamping bolt is inserted into a threaded hole installed at the other end of the pressure plate.

7. The positioning and clamping device for a compressor body as described in claim 6, characterized in that: in, The first positioning support mechanism includes a first support block, which has a convex-shaped structure. A threaded hole is provided on the top of the first support block, and a first support bolt is installed in the threaded hole. The clamping bolt and the first support bolt respectively abut against the upper and lower surfaces of the side boss of the workpiece.

8. The positioning and clamping device for a compressor body as described in claim 6, characterized in that: in, The support base consists of a base and an upright. The support base has an overall L-shaped structure. The base is fixed to the bottom plate, and the upright is fixed to the base. The top of the upright has an internal threaded hole, and the connecting bolt is installed by engaging the internal threaded hole.

9. The positioning and clamping device for a compressor body as described in claim 1, characterized in that: in, The second positioning support mechanism includes a second support block, which has a convex structure. A threaded hole is provided on the top of the second support block, and a second support bolt is installed in the threaded hole.

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