Positioning device for pump body blank pipe fitting machining

Abstract

The utility model relates to a positioning device for pump body blank pipe fitting machining, and belongs to the technical field of pump body machining. The four sets of radial positioning assemblies form a four-claw centering structure, the driving assembly drives the radial positioning assemblies to move synchronously, coaxial centering is carried out on the pump body blank pipe fitting, the coaxiality of the pump body blank pipe fitting after positioning is guaranteed, and the precision of the pump body blank pipe fitting is guaranteed by finely adjusting the limiting assembly. The four contact points are connected and positioned with the inner hole wall of the pump body blank pipe fitting, the problem that positioning is unstable due to the fact that an irregular circular hole inner wall is generated after the pump body blank pipe fitting is cast and formed is solved, the positioning device can be suitable for positioning workpieces with irregular circular holes, the machining precision of the workpieces can be improved, and the product quality is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pump body processing, and in particular relates to a positioning device for processing a pump body blank pipe fitting. Background Art

[0002] In existing processing workshops, it is often necessary to process parts with centrally symmetrical cross-sectional shapes, which need to be clamped with special tools before finding the center.

[0003] During the processing of pump body blank pipe fittings, positioning accuracy is crucial to the quality of the product. Most existing positioning devices use a three-claw centering structure. After the blank pipe fittings are cast, their inner hole wall presents an irregular circular structure, and the three-claw centering is only connected to the workpiece through three contact points, which is not stable enough and has low positioning accuracy. It is difficult to ensure its coaxiality. During the processing, the workpiece is prone to slight shaking or tilting, which affects the processing accuracy of the workpiece and reduces the product quality. Summary of the invention

[0004] In order to overcome the problem that most of the existing positioning devices in the background technology use a three-claw centering structure, since the inner ring of the blank pipe fitting presents an irregular circular structure after casting, and the three-claw centering is connected to the workpiece only through three contact points, the stability is insufficient, and the positioning accuracy is not high, it is difficult to ensure its coaxiality, and during the processing, the workpiece is prone to slight shaking or tilting, thereby affecting the processing accuracy of the workpiece and reducing the product quality. The utility model provides a positioning device for processing pump body blank pipe fittings; four groups of radial positioning components are set to form a four-claw centering structure, and the radial positioning components are driven by the driving component to move synchronously to coaxially center the pump body blank pipe fitting, thereby ensuring the coaxiality of the pump body blank pipe fitting after positioning, and by fine-tuning the limit component, the four contact points are connected and positioned with the inner hole wall of the pump body blank pipe fitting, thereby avoiding the problem of unstable positioning caused by the irregular inner wall of the circular hole after the pump body blank pipe fitting is cast and formed. It can be suitable for positioning workpieces with irregular circular holes, which is beneficial to improving the processing accuracy of the workpiece and further improving the product quality.

[0005] To achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a positioning device for processing pump body blank pipe fittings mainly includes a chuck, a protective cover, a driving assembly, a radial positioning assembly, a rotating shaft, a base, a column, an axial positioning assembly, a limit assembly, and a motor. The base is symmetrically equipped with columns on both sides, a protective cover is installed on the chuck, a rotating shaft is fixedly installed on the protective cover, the rotating shaft is installed on the column through a bearing seat, an axial positioning assembly is installed on the other column, the motor is installed on the base, and the motor output shaft is connected to the rotating shaft end through a belt transmission machine; transverse slide grooves are provided on the left and right sides of the chuck, longitudinal slide grooves are provided on the upper and lower sides of the chuck, radial positioning assemblies that can slide radially along the chuck are installed on the transverse slide grooves and the longitudinal slide grooves, a limit assembly for supporting the inner wall of the pump body blank pipe fitting is installed on the radial positioning assembly, and a driving assembly for driving the radial positioning assembly to move synchronously is installed inside the protective cover.

[0006] The axial positioning assembly includes a sleeve, a threaded rod, and a handwheel. The sleeve is installed on the column through a bearing, a threaded rod is installed on the sleeve, a handwheel for easy shaking is installed at the end of the threaded rod, and a rotating shaft is inserted in the sleeve and the end is fixedly connected to the threaded rod.

[0007] The radial positioning assembly includes a first slider, a guide groove, and a second slider. The limiting assembly includes a screw rod, a third slider, and an arc-shaped support plate. The first slider and the second slider are both provided with guide grooves. The third slider is slidably installed in the guide groove. A screw rod threadably connected to the third slider is installed in the guide groove. The third slider is connected to an arc-shaped support plate for supporting the inner wall of the pump body blank pipe fitting.

[0008] The driving assembly includes a bidirectional screw, a first L-shaped connecting rod, a connecting plate, a connecting column, a connecting block, a second L-shaped connecting rod, and a crank. The first slider is slidably installed in the horizontal slide groove, and the second slider is slidably installed in the longitudinal slide groove. A connecting column is provided at the center of the chuck, and a rotatable connecting plate is installed on the connecting column. One end of the first L-shaped connecting rod is hinged on the connecting plate, and the other end is hinged on the first slider. One end of the second L-shaped connecting rod is hinged on the connecting plate, and the other end is hinged on the second slider. The bidirectional screw is installed on the protective cover through a bearing, one end of the bidirectional screw penetrates the protective cover and a crank is provided at its end. A connecting block is provided on the first slider, and the connecting block is threadedly connected to the bidirectional screw.

[0009] The upper surface of the arc-shaped support plate is provided with a rubber pad for increasing friction.

[0010] Beneficial effects of the utility model:

[0011] The four groups of radial positioning components arranged in the utility model constitute a four-claw centering structure, and the driving component drives the radial positioning components to move synchronously, so as to carry out coaxial centering on the pump body blank pipe fittings, thereby ensuring the coaxiality of the pump body blank pipe fittings after positioning, and through fine-tuning the limit component, the four contact points are connected and positioned with the inner hole wall of the pump body blank pipe fittings, thereby avoiding the problem of unstable positioning caused by the irregular inner wall of the circular hole produced after the pump body blank pipe fittings are cast and formed, and can be suitable for the positioning of workpieces with irregular circular holes, which is beneficial to improving the machining accuracy of the workpieces and further improving the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0013] Figure 2 It is a three-dimensional structural schematic diagram of the radial positioning component in the installed state.

[0014] Figure 3 It is a three-dimensional structural diagram of the drive component installation status.

[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the radial positioning component and the limit component.

[0016] Figure 5 It is a cross-sectional view of the axial positioning component. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technicians.

[0018] The utility model discloses a positioning device for processing a pump body blank pipe fitting, the positioning device for processing a pump body blank pipe fitting mainly comprises a chuck 1, a protective cover 2, a drive assembly 3, a radial positioning assembly 4, a rotating shaft 5, a base 6, a column 7, an axial positioning assembly 8, a limit assembly 9, and a motor 10. The base 6 is symmetrically provided with columns 7 on both sides, a protective cover 2 is installed on the chuck 1, a rotating shaft 5 is fixedly installed on the protective cover 2, the rotating shaft 5 is installed on the column 7 through a bearing seat, the axial positioning assembly 8 is installed on another column 7, and the motor 1 0 is installed on the base 6, and the output shaft of the motor 10 is connected to the end of the rotating shaft 5 through a belt transmission mechanism; the left and right sides of the chuck 1 are provided with transverse slide grooves 101, and the upper and lower sides of the chuck 1 are provided with longitudinal slide grooves 102, and radial positioning components 4 that can slide radially along the chuck 1 are installed on the transverse slide grooves 101 and the longitudinal slide grooves 102, and the radial positioning components 4 are installed with limit components 9 for supporting the inner wall of the pump body blank pipe fitting, and the protective cover 2 is installed with a driving component 3 for driving the radial positioning component 4 to move synchronously.

[0019] When in use, the ends of the pump body blank pipe fittings to be processed are respectively docked with the chucks 1 on the column 7, and the distance between the chucks 1 is adjusted by the axial positioning component 8, so that the inner hole wall of the pump body blank pipe fitting overlaps the limit component 9, and the operator adjusts the driving component 3, and drives the radial positioning component 4 to move synchronously along the radial direction of the chuck 1 through the driving component 3, and coaxially centers the inner hole wall of the pump body blank pipe fitting. Then, the operator fine-tunes the position of the limit component 9 to make it contact and press against the inner hole wall of the blank pipe fitting, so as to avoid the problem of unstable positioning caused by the irregular inner wall of the circular hole produced after the pump body blank pipe fitting is cast; after the positioning is completed, the motor 10 is started, and the motor 10 drives the rotating shaft 5 rotates, further driving the chuck 1 to rotate, thereby driving the pump body blank pipe fitting to rotate for processing; the four groups of radial positioning components arranged in the utility model constitute a four-claw centering structure, and the radial positioning components are driven to move synchronously by the driving component to coaxially center the pump body blank pipe fitting, thereby ensuring the coaxiality of the pump body blank pipe fitting after positioning, and by fine-tuning the limit component, the four contact points are connected and positioned with the inner hole wall of the pump body blank pipe fitting, thereby avoiding the problem of unstable positioning caused by the irregular inner wall of the circular hole produced after the pump body blank pipe fitting is cast and formed, and can be suitable for positioning workpieces with irregular circular holes, which is beneficial to improving the processing accuracy of the workpiece and further improving the product quality.

[0020] The axial positioning assembly 8 includes a sleeve 801, a threaded rod 802, and a handwheel 803. The sleeve 801 is installed on the column 7 through a bearing, and a threaded rod 802 is installed on the sleeve 801. A handwheel 803 for easy shaking is installed at the end of the threaded rod 802. The rotating shaft 5 is inserted in the sleeve 801 and the end is fixedly connected to the threaded rod 802. When in use, the operator rotates the handwheel 803 and drives the threaded rod 802 to rotate. The threaded rod 802 drives the rotating shaft 5 to move axially along the sleeve 801, and further drives the chuck 1 to move axially, thereby adjusting the distance between the two chucks 1 to achieve the axial positioning function of the pump body blank pipe fittings.

[0021] The radial positioning component 4 includes a first slider 401, a guide groove 402, and a second slider 403. The limiting component 9 includes a screw 901, a third slider 902, and an arc-shaped support plate 903. The first slider 401 and the second slider 403 are both provided with a guide groove 402. The third slider 902 is slidably installed in the guide groove 402. The screw 901 threadedly connected to the third slider 902 is installed in the guide groove 402. The third slider 902 is connected to the arc-shaped support plate 903 for supporting the inner wall of the pump body blank pipe fitting; the driving component 3 includes a bidirectional screw 301, a first L-shaped connecting rod 302, a connecting plate 303, a connecting column 304, a connecting block 305, a second L-shaped connecting rod 306, and a crank 3 07, the first slider 401 is slidably installed in the horizontal slide groove 101, the second slider 403 is slidably installed in the longitudinal slide groove 102, a connecting column 304 is provided at the center of the chuck 1, a rotatable connecting plate 303 is installed on the connecting column 304, one end of the first L-shaped connecting rod 302 is hinged on the connecting plate 303, and the other end is hinged on the first slider 401, one end of the second L-shaped connecting rod 306 is hinged on the connecting plate 303, and the other end is hinged on the second slider 403, the bidirectional screw rod 301 is installed on the protective cover 2 through a bearing, one end of the bidirectional screw rod 301 passes through the protective cover 2 and a crank 307 is provided at its end, and a connecting block 305 is provided on the first slider 401, and the connecting block 305 is threadedly connected to the bidirectional screw rod 301

[0022] When in use, the operator turns the crank 307, and the crank 307 drives the bidirectional screw 301 to rotate, and drives the connecting block 305 to move axially along the bidirectional screw 301, thereby driving the first slider 401 to move toward or in the opposite direction. During the movement of the first slider 401, the first L-shaped connecting rod 302 drives the connecting plate 303 to rotate, and the connecting plate 303 drives the second slider 403 to move radially along the chuck 1 through the second L-shaped connecting rod 306, and the inner hole wall of the pump body blank pipe is positioned and supported by the arc support plate 903, so as to realize the synchronous adjustment function of the radial positioning component 4, and ensure the pump body blank The coaxiality of the pipe fittings after positioning improves the processing accuracy of the pump body blank pipe fittings; after the pump body blank pipe fittings are centered, the operator checks whether each arc support plate 903 is in contact with the inner hole wall of the pump body blank pipe fittings. If there is a gap, use the Allen wrench to rotate the screw rod 901. The screw rod 901 drives the arc support plate 903 to move through the third slider 902, so that it is in contact with the inner hole wall of the pump body blank pipe fittings, avoiding the problem of unstable positioning caused by the irregular inner wall of the circular hole produced after the pump body blank pipe fittings are cast, further improving the stability of the workpiece during the processing, and ensuring the processing accuracy of the workpiece.

[0023] The upper surface of the arc-shaped support plate 903 is provided with a rubber pad for increasing friction, which is beneficial to improving the stability of the workpiece.

[0024] Working process:

[0025] When in use, the ends of the pump body blank pipe fittings to be processed are respectively docked with the chucks 1 on the column 7, and the operator turns the hand wheel 803, which drives the threaded rod 802 to rotate, and the threaded rod 802 drives the rotating shaft 5 to move axially along the sleeve 801, and further drives the chuck 1 to move axially, thereby adjusting the distance between the two chucks 1, so that the inner hole wall of the pump body blank pipe fitting overlaps the arc support plate 903, and the axial positioning function of the pump body blank pipe fitting is realized; the operator turns the crank 307, and the crank 307 drives the bidirectional screw rod 301 to rotate, and drives the connecting block 305 to move axially along the bidirectional screw rod 301 The first slider 401 moves, thereby driving the first slider 401 to move toward or in the opposite direction. During the movement of the first slider 401, the first L-shaped connecting rod 302 drives the connecting plate 303 to rotate, and the connecting plate 303 drives the second slider 403 to move radially along the chuck 1 through the second L-shaped connecting rod 306, and the inner hole wall of the pump body blank pipe fitting is positioned and supported by the arc support plate 903, so as to realize the synchronous adjustment function of the radial positioning component 4, ensure the coaxiality of the pump body blank pipe fitting after positioning, and improve the processing accuracy of the pump body blank pipe fitting; after the centering of the pump body blank pipe fitting is completed, the operator checks each arc support plate Check whether 903 is in contact with the inner hole wall of the pump body blank pipe fitting. If there is a gap, use the hexagonal wrench to rotate the screw rod 901, and the screw rod 901 drives the arc support plate 903 to move through the third slider 902, so that it contacts and presses against the inner hole wall of the pump body blank pipe fitting, avoiding the problem of unstable positioning caused by the irregular inner wall of the circular hole produced after the pump body blank pipe fitting is cast, further improving the stability of the workpiece during the processing, and ensuring the processing accuracy of the workpiece; after the positioning is completed, start the motor 10, the motor 10 drives the rotating shaft 5 to rotate, further drives the chuck 1 to rotate, thereby driving the pump body blank pipe fitting The workpiece rotates for processing; the four groups of radial positioning components arranged in the utility model constitute a four-claw centering structure, and the radial positioning components are driven to move synchronously by the driving component to coaxially center the pump body blank pipe fittings, thereby ensuring the coaxiality of the pump body blank pipe fittings after positioning, and by fine-tuning the limit component, the four contact points are connected and positioned with the inner hole wall of the pump body blank pipe fittings, thereby avoiding the problem of unstable positioning caused by the irregular inner wall of the circular hole produced after the pump body blank pipe fittings are cast and formed. This can be suitable for positioning workpieces with irregular circular holes, is beneficial to improving the machining accuracy of the workpieces, and further improves the product quality.

[0026] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A positioning device for processing pump body blank pipe fittings, characterized in that: The positioning device for processing a pump body blank pipe fitting comprises a chuck (1), a protective cover (2), a driving assembly (3), a radial positioning assembly (4), a rotating shaft (5), a base (6), a column (7), an axial positioning assembly (8), a limit assembly (9), and a motor (10). The columns (7) are symmetrically mounted on both sides of the base (6). The chuck (1) is mounted with a protective cover (2). The rotating shaft (5) is fixedly mounted on the protective cover (2). The rotating shaft (5) is mounted on the column (7) through a bearing seat. The axial positioning assembly (8) is mounted on another column (7). The motor (10) is mounted on the base (6). ), the output shaft of the motor (10) is connected to the end of the rotating shaft (5) through a belt transmission mechanism; the left and right sides of the chuck (1) are provided with transverse slide grooves (101), the upper and lower sides of the chuck (1) are provided with longitudinal slide grooves (102), the transverse slide grooves (101) and the longitudinal slide grooves (102) are both provided with radial positioning components (4) that can slide radially along the chuck (1), the radial positioning components (4) are provided with a limit component (9) for supporting the inner wall of the pump body blank pipe fitting, and the protective cover (2) is provided with a driving component (3) for driving the radial positioning component (4) to move synchronously.

2. A positioning device for processing a pump body blank pipe fitting according to claim 1, characterized in that: The axial positioning assembly (8) comprises a sleeve (801), a threaded rod (802), and a handwheel (803); the sleeve (801) is mounted on the column (7) via a bearing; the threaded rod (802) is mounted on the sleeve (801); a handwheel (803) is mounted at the end of the threaded rod (802) for easy shaking; the rotating shaft (5) is inserted into the sleeve (801) and the end thereof is fixedly connected to the threaded rod (802).

3. A positioning device for processing a pump body blank pipe fitting according to claim 1 or 2, characterized in that: The radial positioning assembly (4) comprises a first slider (401), a guide groove (402), and a second slider (403); the limiting assembly (9) comprises a screw rod (901), a third slider (902), and an arc-shaped support plate (903); the first slider (401) and the second slider (403) are both provided with a guide groove (402); the third slider (902) is slidably mounted in the guide groove (402); a screw rod (901) threadedly connected to the third slider (902) is mounted in the guide groove (402); and the third slider (902) is connected to an arc-shaped support plate (903) for supporting the inner wall of the pump body blank pipe fitting.

4. A positioning device for processing a pump body blank pipe fitting according to claim 3, characterized in that: The driving assembly (3) comprises a bidirectional screw rod (301), a first L-shaped connecting rod (302), a connecting plate (303), a connecting column (304), a connecting block (305), a second L-shaped connecting rod (306), and a crank (307). The first slider (401) is slidably mounted in the transverse slide groove (101), and the second slider (403) is slidably mounted in the longitudinal slide groove (102). The center of the chuck (1) is provided with a connecting column (304), and a rotatable connecting plate (303) is mounted on the connecting column (304). The first L-shaped connecting rod (304) is provided with a connecting column (304). One end of the second L-shaped connecting rod (306) is hinged on the connecting plate (303) and the other end is hinged on the first slider (401). One end of the second L-shaped connecting rod (306) is hinged on the connecting plate (303) and the other end is hinged on the second slider (403). The bidirectional screw rod (301) is mounted on the protective cover (2) via a bearing. One end of the bidirectional screw rod (301) passes through the protective cover (2) and a crank handle (307) is provided at the end thereof. A connecting block (305) is provided on the first slider (401). The connecting block (305) is threadedly connected to the bidirectional screw rod (301).

5. A positioning device for processing a pump body blank pipe fitting according to claim 3, characterized in that: The upper surface of the arc-shaped support plate (903) is provided with a rubber pad for increasing friction.

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