Positioning and clamping device for compressor body

Abstract

The invention 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, and is characterized in that the front-end inner hole positioning mechanism comprises a chuck seat arranged on one side of the bottom plate; 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] The present invention relates to the technical field of mechanical processing positioning devices, and particularly relates to a positioning and clamping device for a compressor body. Background Art

[0002] During the processing of a compressor body, it is necessary to position and clamp it to ensure the accuracy of the processing operation. The processing operations of the compressor body generally include the processing of the inner holes at both ends of the workpiece and the processing of the peripheral surfaces of the workpiece. At present, there is a lack of a positioning and clamping device dedicated to the compressor body, and the conventional operation is to use a general fixture for clamping. However, this form of clamping with a general fixture still has some deficiencies: it is difficult to ensure the clamping stability and consistency of workpieces in different batches. In addition, when using a general fixture for processing, it is impossible to simultaneously process the peripheral surfaces. During the processing of the peripheral surfaces, it is necessary to disassemble and replace and adjust the position multiple times to process different areas of the peripheral surface, resulting in low production efficiency. Summary of the Invention

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

[0004] To achieve the above purpose, the present invention provides a positioning and clamping device for a compressor body, including: a bottom plate, a front-end inner hole positioning mechanism provided on one side of the bottom plate and including a first chuck for centering and clamping the front-end inner hole of the workpiece; a rear-end inner hole positioning mechanism provided on the other side of the bottom plate and including a second chuck for centering and clamping the rear-end inner hole of the workpiece, the center of the first chuck and the center of the second chuck being on the same straight line; an auxiliary moving mechanism connected to the second chuck for driving the second chuck to move back and forth; a pressing plate mechanism for applying pressure above the workpiece; and a positioning and supporting mechanism for providing support below the workpiece.

[0005] Further, in the positioning and clamping device for a compressor body provided by the present invention, it may further have the following features: the rear-end inner hole positioning mechanism further includes a tailstock and a coupling shaft. The tailstock is provided with an intermediate through hole, one end of the coupling shaft is fitted and inserted into the intermediate through hole, and the other end of the coupling shaft is fixed to the second chuck.

[0006] Further, in the positioning and clamping device for a compressor body provided by the present invention, the following features may also be included: It further includes a chuck positioning assembly, and the chuck positioning assembly includes a connecting bolt, a movable support plate, and a support bolt; one end of the connecting bolt is fixed on the tailstock, and the other end protrudes from the front end face of the tailstock; first bolt holes and second bolt holes are respectively formed at both ends of the movable support plate, 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] Further, in the positioning and clamping device for a compressor body provided by the present invention, the following features may also be included: The first chuck and the second chuck are three-jaw chucks.

[0008] Further, in the positioning and clamping device for a compressor body provided by the present invention, the following features may also be included: The auxiliary moving mechanism includes a chuck transmission pin, a hinge seat, and a connecting rod; the hinge seat is fixed on the bottom plate; the lower end of the connecting rod is hinged to the hinge seat, and a long strip-shaped through groove is formed in the middle of the connecting rod; the chuck transmission pin passes through the long strip-shaped through groove and is installed and fixed on the side of the second chuck.

[0009] Further, in the positioning and clamping device for a compressor body provided by the present invention, the following features may also be included: The pressing plate mechanism includes a support seat, a connecting bolt, a pressing plate, and a pressing bolt; the support seat is fixed on the bottom plate; one end of the pressing plate is rotatably connected to the support seat through the connecting bolt; the pressing bolt is inserted and installed in the threaded hole at the other end of the pressing plate.

[0010] Further, in the positioning and clamping device for a compressor body provided by the present invention, the following features may also be included: The positioning and supporting mechanism includes a first positioning and supporting mechanism, and the first positioning and supporting mechanism is arranged in cooperation with the pressing plate mechanism and is located at the position on the bottom plate corresponding to the rear end of the workpiece, and is used for supporting and pressing the rear end position of the workpiece.

[0011] Further, in the positioning and clamping device for a compressor body provided by the present invention, the following features may also be included: The first positioning and supporting mechanism includes a first support block, the first support block has a convex-shaped structure, a threaded hole is formed at the top of the first support block, and a first support bolt is installed in the threaded hole; the pressing bolt and the first support bolt respectively abut against the upper surface and the lower surface of the side convex platform at the rear end of the workpiece.

[0012] Further, in the positioning and clamping device for a compressor body provided by the present invention, the following features may also be included: The support seat is composed of a base and a vertical rod, the overall shape of the support seat is an L-shaped structure, the base is fixed on the bottom plate, the vertical rod is fixed on the base, a vertical rod internal threaded hole is provided at the top of the vertical rod, and the connecting bolt is installed in cooperation with the vertical rod internal threaded hole.

[0013] Furthermore, in the positioning and clamping device for the compressor body provided by the present invention, the following features may also be included: The positioning and supporting mechanism further includes a second positioning and supporting mechanism. The second positioning and supporting mechanism is at least one group and is located at the position corresponding to the front end of the workpiece on the bottom plate, and is used to support the lower surface of the front end position of the workpiece.

[0014] Furthermore, in the positioning and clamping device for the compressor body provided by the present invention, the following features may also be included: The second positioning and supporting mechanism includes a second supporting block. The second supporting block has a convex-shaped structure. A threaded hole is provided at the top of the second supporting block, and a second supporting bolt is installed in the threaded hole.

[0015] Functions and effects of the present invention:

[0016] The positioning and clamping device for the compressor body provided by the present invention can realize self-centering clamping and machining of the inner holes at both ends of the workpiece through the cooperation of the front-end inner hole positioning mechanism and the rear-end inner hole positioning mechanism. And the pressing plate mechanism, the first positioning and supporting mechanism, and the second positioning and supporting mechanism are provided to improve the stability of clamping and effectively improve the machining quality. In addition, the auxiliary moving mechanism can conveniently adjust the front and rear positions of the chuck. The positioning and clamping device for the compressor body can be used for simultaneous machining of the four peripheral surfaces of the workpiece, reduce the number of times of changing the tooling, and improve the production efficiency. The positioning and clamping device is a special fixture for the compressor body, and compared with the general fixture in the prior art, it can improve the stability and consistency of clamping of workpieces in different batches. Description of the drawings

[0017] Figure 1 is a schematic structural diagram of the positioning and clamping device for the compressor body in an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of the use state of the positioning and clamping device for the compressor body in an embodiment of the present invention;

[0019] Figure 3 is a schematic diagram of the use state of the positioning and clamping device for the compressor body from another perspective in an embodiment of the present invention. Detailed implementation manners

[0020] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the following embodiments will specifically elaborate on the technical solutions of the present invention in conjunction with the drawings.

[0021] See Figures 1 to 3, this embodiment provides a positioning and clamping device for a compressor body 100 (hereinafter referred to as the workpiece). This device includes: a base plate 1, a front inner hole positioning mechanism, a rear inner hole positioning mechanism, an auxiliary moving mechanism, a pressing plate mechanism, a first positioning and supporting mechanism 11, a second positioning and supporting mechanism 12, and a chuck positioning assembly 7.

[0022] In this embodiment, the base plate 1 is a rectangular plate, and a number of bolt holes are provided on the base plate 1 for bolt connection and installation of other components.

[0023] The front inner 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 arranged on one side of the base plate 1. The first chuck 4 is installed on the chuck seat 2 and locked and fixed by the fastening bolts 3. The first chuck 4 is a commercially available three-jaw chuck, which is used for automatically centering and clamping the front inner hole of the workpiece.

[0024] The rear inner hole positioning mechanism includes: a tailstock 5, fastening bolts 6, a second chuck 8, and a coupling shaft 15. The tailstock 5 is fixedly arranged on the other side of the base plate 1. The tailstock 5 is provided with a middle through hole, and one end of the coupling shaft 15 is inserted into the middle through hole in a matching manner, and the other end of the coupling shaft 15 is fixed to the second chuck 8, so that the second chuck 8 is installed on the tailstock 5 through the coupling shaft 15 in a matching manner. The fastening bolts 6 are used to lock and fix the coupling shaft 15 after the position of the second chuck 8 is adjusted. The specific operation is that the fastening bolts are screwed down into the locking holes and extend to contact and abut against the surface of the coupling shaft 15 to achieve locking and fixing. The second chuck 8 is a commercially available three-jaw chuck, which is used for automatically centering and clamping the rear inner hole of the workpiece. The center of the first chuck 4 and the center of the second chuck 8 are located on the same straight line to ensure the coaxiality of the inner holes on both sides of the workpiece to be machined.

[0025] The auxiliary moving mechanism includes a chuck driving pin 10, a hinge seat 16, and a connecting rod 9. The hinge seat 16 is fixed on the base plate 1. The lower end of the connecting rod 9 is hinged to the hinge seat 16, so that the connecting rod 9 can swing around the hinge axis. A long strip-shaped through groove is provided in the middle of the connecting rod 9. The chuck driving pin 10 is inserted into the long strip-shaped through groove on the connecting rod 9 in a matching manner, and the chuck driving pin 10 is installed and fixed on the side of the second chuck 8.

[0026] When the second chuck 8 is not locked, the operator can swing the connecting rod 9 according to the work needs to drive the second chuck 8 to move back and forth, so as to adjust the position of the second chuck 8 to better clamp the workpiece. When the second chuck 8 moves back and forth, the coupling shaft 15 is driven to move back and forth in the middle through hole of the tailstock 5. After the workpiece is clamped, the operator adjusts the fastening bolts 6 to lock the coupling shaft 15, and then locks the second chuck 8.

[0027] SeeFigure 1 and Figure 3 The 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. One end of the connecting bolt 71 is fixed on the tailstock 5, and the other end protrudes from the front end face of the tailstock 5. First bolt holes and second bolt holes are respectively formed at both ends of the movable support plate 72. 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. The threaded end of the support bolt 73 is installed and fixed in the second bolt hole of the movable support plate 72, and the bolt head end of the support bolt 73 abuts against the end face of the second chuck 8. After the workpiece is installed by the positioning chuck, the chuck positioning assembly 7 plays a supporting role to prevent the second chuck from moving.

[0028] The pressing plate mechanism is arranged in cooperation with the first positioning and supporting mechanism 11 at a position corresponding to the rear end of the workpiece 100 on the bottom plate 1.

[0029] See Figure 1 As shown in the figure, the pressing plate mechanism includes a support seat 13, a connecting bolt 17, a pressing plate 14, and a pressing bolt 18. The support seat is fixed on the bottom plate 1. The support seat is composed of a base 13a and a vertical rod 13b. The overall shape of the support seat is an L-shaped structure. The base 13a is fixed on the bottom plate 1, and the vertical rod 13b is fixed on the base. An internal thread hole of the vertical rod is provided at the top of the vertical rod, and the connecting bolt 17 is installed in cooperation with the internal thread hole of the vertical rod. One end of the pressing plate 14 is rotatably connected to the vertical rod 13b through the connecting bolt 17, and the pressing plate can be rotated to facilitate taking out or placing the workpiece. The pressing bolt 18 is inserted into a threaded hole at the other end of the pressing plate 14.

[0030] See Figure 2 As shown in the figure, the first positioning and supporting mechanism 11 includes a first support block 11a. The first support block 11a has a convex-shaped structure. A threaded hole is provided at the top of the first support block 11a, and a first support bolt 11b is installed in the threaded hole. The pressing bolt 18 and the first support bolt 11b respectively abut against the upper surface and the lower surface of the side boss 100a of the workpiece 100. The first support bolt 11b is an external hexagonal bolt. The first support bolt 11b can adjust the depth of its insertion into the threaded hole by screwing with the first support block 11a, so as to adjust the support height.

[0031] See Figure 1, the second positioning and supporting mechanism 12 is at least one group, which is set according to requirements. The second positioning and supporting mechanism 12 is located on the bottom plate 1 at the position corresponding to the front end of the workpiece 100, and is used to play an auxiliary supporting role for the lower plane of the bottom of the front end of the workpiece. The second positioning and supporting mechanism 12 includes a second supporting block 12a. The second supporting block has a convex-shaped structure. A threaded hole is formed in the top of the second supporting block 12a, and a second supporting bolt 12b is installed in the threaded hole. The second supporting bolt 12b is an external hexagon bolt. The second supporting block 12a can adjust the depth of its own insertion into the threaded hole through threaded connection with the second supporting block 12a, so as to adjust the supporting height.

[0032] The above embodiments are only the preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.

Claims

1. A positioning and clamping device for a compressor body, characterized in that Including: Base plate, Front-end inner hole positioning mechanism, arranged on one side of the base plate, including a first chuck for centering and clamping the front-end inner hole of the workpiece; Rear-end inner hole positioning mechanism, arranged on the other side of the base plate, including a second chuck for centering and clamping the rear-end inner hole of the workpiece, and the centers of the first chuck and the second chuck are on the same straight line; Auxiliary moving mechanism, connected to the second chuck, for driving the second chuck to move back and forth; Pressing plate mechanism, for applying pressure above the workpiece; Positioning and supporting mechanism, for providing support below the workpiece.

2. The positioning and clamping device for the compressor body according to claim 1, characterized in that: Among them, The rear-end inner hole positioning mechanism further includes a tailstock and a coupling shaft. There is an intermediate through hole on the tailstock, one end of the coupling shaft is inserted into the intermediate through hole in a matching manner, and the other end of the coupling shaft is fixed to the second chuck.

3. The positioning and clamping device for the compressor body according to claim 2, wherein: It further includes a chuck positioning assembly, and the chuck positioning assembly includes a connecting bolt, a movable support plate, and a support bolt; One end of the connecting bolt is fixed on the tailstock, and the other end protrudes from the front end face of the tailstock; Both 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.

4. The positioning and clamping device for the compressor body according to claim 1, characterized in that: Among them, The first chuck and the second chuck are three-jaw chucks.

5. The positioning and clamping device for the compressor body according to claim 1, characterized in that: Among them, The auxiliary moving mechanism includes a chuck transmission 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 transmission pin passes through the long strip-shaped through groove and is installed and fixed on the side of the second chuck.

6. The positioning and clamping device for the compressor body according to claim 1, characterized in that: Among them, The pressing plate mechanism includes a support seat, a connecting bolt, a pressing plate, and a pressing bolt; The support seat is fixed on the base plate; One end of the pressing plate is rotatably connected to the support seat through the connecting bolt; The pressing bolt is inserted into the threaded hole at the other end of the pressing plate.

7. The positioning and clamping device for the compressor body according to claim 6, characterized in that: Among them, The positioning and supporting mechanism includes a first positioning and supporting mechanism, which is arranged in cooperation with the pressing plate mechanism and is located at the position corresponding to the rear end of the workpiece on the base plate, for supporting and pressing the rear end position of the workpiece.

8. The positioning and clamping device for the compressor body according to claim 7, characterized in that: Among them, The first positioning and supporting mechanism includes a first support block, the first support block has a convex-shaped structure, and a threaded hole is provided at the top of the first support block, and a first support bolt is installed in the threaded hole. The pressing bolt and the first supporting bolt respectively abut against the upper surface and the lower surface of the side boss at the rear end of the workpiece.

9. The positioning and clamping device for a compressor body according to claim 1, characterized in that: Among them, The positioning and supporting mechanism further includes a second positioning and supporting mechanism, and the second positioning and supporting mechanism is at least one group, located at a position corresponding to the front end of the workpiece on the bottom plate, and is used for supporting the lower surface of the front end position of the workpiece.

10. The positioning and clamping device for a compressor body according to claim 9, characterized in that: Among them, The second positioning and supporting mechanism includes a second supporting block, the second supporting block has a convex-shaped structure, a threaded hole is formed in the top of the second supporting block, and a second supporting bolt is installed in the threaded hole.

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