Special fixture for machining pump body of gear pump

Abstract

The utility model relates to a special fixture for machining a pump body of a gear pump, which is characterized in that an upright post is connected to the center of a supporting seat, a bottom supporting plate is connected to the upright post, a fixing device is arranged on the bottom supporting plate, and the pump body of the gear pump is stably connected with the fixture through the fixing device; a strip-shaped groove is formed in the upper surface of the supporting base and is formed by four branch grooves in a butt joint mode, a spherical shell is arranged at the center of the strip-shaped groove, a spherical ball is arranged in the spherical shell in a matched mode and can rotate in the spherical shell, a stand column is connected to the spherical ball, and the stand column can be driven to turn over when the spherical ball rotates. The stand columns are matched in the branch grooves; the utility model has the beneficial effects that when the stand column drives the pump body of the gear pump to turn over until the stand column is adaptive to the branch groove of the cylinder, different side surfaces of the pump body of the gear pump can be processed; and the brush can clean dirt and sweeps on the pump body of the gear pump, so that an operator is prevented from manually cleaning the dirt and the sweeps, and the operation is relatively simple.

Description

Technical Field

[0001] The utility model belongs to a clamping and fixing device, in particular to a special clamp for machining a gear pump body. Background Art

[0002] A gear pump is a pump that uses a pair of meshing gears to draw liquid from one end and discharge it from the other end. The gear pump body is a universal part, and a boring machine is required during its processing. When the boring machine is processing the gear pump body, the gear pump body needs to be clamped and positioned.

[0003] In the prior art, an adjustable fixture for machining a gear pump body is disclosed, with document number CN214560196U. The fixture comprises a base plate, a side plate disposed on one side of the base plate, a fixing block disposed on the top of the base plate, a telescopic plate disposed inside the side plate, an electric telescopic rod disposed on one side of the telescopic plate, and a push plate mounted on one side of the electric telescopic rod.

[0004] However, in the above scheme, although the clamp can play the role of clamping and positioning the gear pump body, after completing the processing of one surface of the gear pump body, when it is necessary to process other surfaces of the gear pump body, it is necessary to first adjust the push plate and the electric push rod. After turning the gear pump body over, the electric push rod and the push rod need to be adjusted again so that the push plate can clamp the gear pump body, which is a more troublesome operation. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a special fixture for conveniently processing multiple surfaces of a gear pump body.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is: a special fixture for machining a gear pump body, comprising an operating table, a support base provided at the center of the operating table, the support base being connected to a column via a center base, a bottom support plate being connected to the free end of the column, a fixing device being provided on the bottom support plate, the fixing device being connected to the gear pump body, the fixing device applying an internal support force to the gear pump body;

[0007] The center seat is movably connected to the center of the support seat, and the center seat can rotate freely with the column. When the center seat rotates freely, it can drive the column to flip;

[0008] The fixing device includes a sleeve fixed at the center of the bottom support plate, a plurality of inner support components are provided on the sleeve, a vertical arm is connected to the center of the bottom support plate, the vertical arm is located on the vertical center axis of the sleeve, an external thread is provided on the vertical arm, and the inner top can be screwed onto the vertical arm;

[0009] The inner top is in the shape of a truncated cone and can move axially when the inner top rotates, so that the inner support assembly moves in a direction away from the vertical center axis of the sleeve until the inner support assembly applies thrust to the inner wall of the gear pump body.

[0010] Furthermore, the sleeve is provided with a plurality of through holes extending in its radial direction, and the plurality of through holes are distributed in a circular array around the vertical center axis of the sleeve. The inner support assembly includes a limiting arm passing through the through holes, the outer end of the limiting arm is connected to a clamping plate, and the inner end surface of the limiting arm is a spherical surface.

[0011] Furthermore, a linear groove is provided on the inner wall of the through hole, a protruding column is provided on the limiting arm, the protruding column is located in the linear groove, and a compression return spring is provided between the protruding column and the end of the linear groove away from the vertical center axis of the sleeve.

[0012] Furthermore, a support platform is provided at the center of the operating table, and a through hole is provided at the center of the support platform for vertically penetrating the support platform. The support seat passes through the through hole, and a brush is provided on the support platform. The column can be flipped to the surface of the gear pump body to contact the brush.

[0013] Furthermore, the support seat includes a reference seat and a protective shell. The protective shell is fixed at the center of the operating table. An annular groove is provided on the bottom surface of the reference seat, and the upper end of the protective shell is adapted to fit in the annular groove.

[0014] Furthermore, a driving motor is provided in the protective shell, and the output shaft of the driving motor is connected to the center of the bottom surface of the reference seat. When the driving motor is working, it can control the rotation of the reference seat.

[0015] Furthermore, a groove is provided at the center of the upper surface of the support seat, and the groove is connected to four branch grooves. The four branch grooves are distributed in a circular array around the central axis of the groove, and the angle between two adjacent branch grooves is 90°. The center seat is adapted in the groove, and the center seat can rotate freely in the groove.

[0016] Furthermore, the four branch grooves divide the upper surface of the support base into four blank areas. Two shafts are provided on the support base. The shafts are rotatable and are located in two non-adjacent blank areas.

[0017] Furthermore, the upper end of each shaft is hinged with a locking plate, which can be flipped to a horizontal state. The free end of the buckle plate is provided with a vertical through hole, and two threaded blind holes are provided on the upper surface of the support seat, and the two threaded blind holes are located in the other two blank areas.

[0018] Furthermore, the through hole on the locking plate can be rotated to the top of the threaded blind hole as the locking plate rotates. At this time, the through hole is aligned with the threaded blind hole, and the thread can be screwed into the hole.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the inner support assembly of the device is located on the bottom support plate, and the inner support assembly applies an outward thrust to the inner wall of the gear pump body, so that several required side surfaces of the gear pump body are all exposed. When the column with the gear pump body is turned over until the column fits into the branch groove of the non-cylinder, different side surfaces of the gear pump body can be processed by a machine tool;

[0020] In addition, the support seat can rotate. When the support seat rotates, the gear pump and the brush on the support platform move relative to each other. The brush can clean the dirt and waste on the gear pump body, avoiding the operator to manually clean the dirt and waste. The operation is relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the utility model from a top view;

[0023] Figure 3 This is a schematic diagram of the main cross-sectional structure of the connection between the pump body and the fixing device of the utility model;

[0024] Figure 4 This is a schematic diagram of the top main cross-sectional structure of the utility model;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the spherical shell of the utility model;

[0026] Figure 6 This is a schematic diagram of the main cross-sectional structure of the connection between the gusset plate and the support seat of the utility model;

[0027] In the figure, 1-operating table, 2-column, 3-bottom support plate, 4-support platform, 5-gear pump body, 6 sleeve, 7-groove, 8-limiting arm, 9-protruding column, 10-compression return spring, 11-pressing plate, 12-vertical arm, 13-inner top, 14-screw handle, 15-branch groove, 16-groove, 18-center seat, 19-reference seat, 20-protective shell, 21-drive motor, 22-brush, 23-gourd-shaped ball, 24-locking plate, 25-threaded rod. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention. In the embodiments, the components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for which protection is claimed, but merely represents selected embodiments of the present application.

[0029] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," "back," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections; electrical connections; hydraulic connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0031] See Figure 1 and Figure 2As shown, a special fixture for processing a gear pump body comprises an operating table 1, a support seat is provided at the center of the operating table 1, a column 2 is connected to the center of the support seat, the free end of the column 2 is connected to a bottom support plate 3, a fixing device is provided on the bottom support plate 3, the gear pump body 5 is stably connected to the device through the fixing device, a support platform 4 is provided on the operating table 1, a through hole is provided at the center of the support platform 4 for vertically passing through the support seat, the support seat passes through the through hole on the support platform 4, the above-mentioned column 2 can be flipped, and when the column 2 is flipped, it can drive the gear pump body 5 to flip, and the flipped gear pump body 5 is placed on the support platform 4, so as to facilitate the processing of different sides of the gear pump body 5.

[0032] See Figure 3 and Figure 4 As shown, the above-mentioned fixing device includes a sleeve 6 fixed at the center of the bottom support plate 3, and a plurality of inner support components are arranged on the sleeve 6 in a circular array around its vertical central axis. The sleeve 6 is provided with a plurality of through holes extending in its radial direction, and the plurality of through holes are distributed in a circular array around the vertical central axis of the sleeve 6. A linear groove 7 is provided on the inner wall of each through hole, and the linear groove 7 extends along the length direction of the through hole. Both ends of the linear groove 7 are closed, and the inner support component includes a limit arm 8 passing through the through hole. , the limiting arm 8 can slide along the length direction of the through hole, and a protruding column 9 is provided on the limiting arm 8, which is adapted to the linear groove 7. A compression return spring 10 is provided between the end of the linear groove 7 away from the central axis of the sleeve 6 and the protruding column 9. The outer end of the limiting arm 8 passes through the through hole and is connected to a clamping plate 11. An anti-slip rubber gasket is provided on the outer surface of the clamping plate 11. The inner end of the limiting arm 8 is located in the area surrounded by the inner wall of the sleeve 6, and the inner end surface of the limiting arm 8 is a spherical surface. In the initial state, the compression return spring 10 is in a natural state;

[0033] The bottom support plate 3 is fixedly connected to a vertical arm 12, and the vertical arm 12 is located on the vertical center axis of the sleeve 6. The vertical arm 12 is provided with an external thread, and the vertical arm 12 can be screwed to an inner top 13. The inner top 13 is truncated and has a thread on the inner wall of the inner top 13. A screwing handle 14 is provided on the end face of the inner top 13. When the inner top 13 is screwed to the vertical arm 12, the inner top 13 can be gradually moved toward the bottom support plate 3 by rotating the screwing handle 14. In the process of the inner top 13 gradually approaching the bottom support plate 3, several limiting arms 8 move simultaneously in the direction away from the center axis of the sleeve 6 under the action of the inner top 13 until several clamping plates 11 apply an outward thrust to the inner wall of the gear pump body 5, that is, the inner support assembly applies an inner support force to the gear pump body 5, thereby connecting the gear pump body 5 to this device.

[0034] See Figure 2 and Figure 5As shown, a groove 16 is provided at the center of the upper surface of the support seat, the inner wall of the groove 16 is a spherical surface, the groove 16 has an upper opening, the groove 16 is connected with four branch grooves 15 provided on the support seat, and the four branch grooves 15 are arranged in a ring array around the central axis of the groove 16. At this time, the angle between two adjacent branch grooves 15 is 90°. The four branch grooves 15 divide the upper surface of the support seat into four blank areas. A spherical center seat 18 is adapted in the groove, the center seat 18 is fixedly connected to the column 2, and the column 2 extends along the radial direction of the center seat 18. The center seat 18 can rotate in the groove 16. During this process, the column 2 is flipped over and just fits in the strip groove, and the side of the gear pump body 5 just rests on the support platform 4;

[0035] The support seat includes a reference seat 19 and a protective shell 20. The protective shell 20 is cylindrical and fixed at the center of the operating table 1. The protective shell 20 and the reference seat 19 are docked and the protective shell 20 is located below the reference seat 19. The bottom surface of the reference seat 19 is provided with an annular groove, and the upper end of the protective shell 20 is adapted in the annular groove. The protective shell 20 has a certain supporting effect on the support seat. A drive motor 21 is provided in the protective shell 20, and the output shaft of the drive motor 21 is fixedly connected to the center of the bottom surface of the reference seat 19. When the drive motor 21 is working, it can control the rotation of the reference seat 19, thereby driving the gear pump body 5 to rotate; a brush 22 is provided on the upper surface of the support platform 4. During the rotation of the gear pump body 5, the brush 22 has a certain cleaning effect on the waste chips and dirt on the gear pump body 5.

[0036] See Figure 2 and Figure 6 As shown, in order to further enhance the cleaning effect, that is, in the process of the brush 22 cleaning the surface of the gear pump body 5, the gear pump body 5 can contact the upper surface of the support platform 4, a rotatable shaft is provided on the support seat, and there are two shafts and the two shafts are located in two non-adjacent blank areas. The upper end of each shaft is hinged with a locking plate 24, which can be flipped to a horizontal state. A perforation is provided on the free end of the locking plate 24, and the other two blank areas are provided with threaded blind holes. When the shaft rotates, the locking plate 24 can pass through the top of the two threaded blind holes in turn. When the locking plate 24 is located just above the threaded blind holes, the perforation is aligned with the threaded blind holes. At this time, the threaded rod 25 can be screwed into the threaded blind holes. When the gear pump body is flipped over so that its surface contacts the support platform 4, the locking plate 24 can be aligned with the pin hole at the corresponding position and screwed in the threaded rod 25. At this time, the locking plate 24 is located above the column, and the locking plate 24 presses the column tightly, thereby making the contact between the gear pump and the support platform 4 more stable.

[0037] When using the special fixture for processing the gear pump body 5, first install the operating table 1 on the machine tool, then flip the column 2 to any branch groove 15, and put the gear pump body 5 on the sleeve 6. At this time, the gear pump body 5 is placed on the brush 22 on the support table 4, and the gear pump body 5 is moved to make the pump body contact with the bottom support plate 3, and then the handle 14 is screwed until the internal support assembly has a certain internal support effect on the gear pump body 5, and then the corresponding position of the buckle plate 24 is placed on the column 2 and the threaded rod 25 is screwed on to lock the position of the column 2 and the gear pump body 5. Then the gear pump body 5 is processed by a machine tool; after one side of the gear pump body 5 is processed, the threaded rod 25 is unscrewed, and the gear pump is turned over so that the column 2 is turned over to the other branch groove 15, and then the lock plate 24 at the corresponding position is placed on the column 2 and the threaded rod 25 is screwed on, and the other side of the gear pump body 5 is processed by a machine tool; before or after the gear pump body 5 is processed by the machine tool, the drive motor 21 can be operated. When the drive motor 21 is working, the brush 22 on the support platform 4 has a certain cleaning effect on the dirt and waste on the gear pump body 5.

[0038] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based primarily on the scope of protection of the claims.

Claims

1. A special fixture for machining a gear pump body, comprising an operating table with a support seat provided at the center thereof, characterized in that: The support seat is connected to a column through a central seat, the free end of the column is connected to a bottom support plate, a fixing device is provided on the bottom support plate, the gear pump body is installed on the fixing device, and the fixing device applies an internal support force to the gear pump body; The center seat is movably connected to the center of the support seat, and the center seat can rotate freely with the column. When the center seat rotates freely, it can drive the column to flip; The fixing device includes a sleeve fixed at the center of the bottom support plate, a plurality of inner support components are provided on the sleeve, a vertical arm is connected to the center of the bottom support plate, the vertical arm is located on the vertical center axis of the sleeve, an external thread is provided on the vertical arm, and the inner top can be screwed onto the vertical arm; The inner top is in the shape of a truncated cone and can move axially when the inner top rotates, so that the inner support assembly moves in a direction away from the vertical center axis of the sleeve until the inner support assembly applies thrust to the inner wall of the gear pump body.

2. A special fixture for machining a gear pump body according to claim 1, characterized in that: The sleeve is provided with a plurality of through holes extending in its radial direction, and the plurality of through holes are distributed in a circular array around the vertical center axis of the sleeve. The inner support assembly includes a limit arm passing through the through holes, the outer end of the limit arm is connected to a clamping plate, and the inner end surface of the limit arm is a spherical surface.

3. The special fixture for machining a gear pump body according to claim 2, characterized in that: A linear groove is provided on the inner wall of the through hole, a protruding column is provided on the limiting arm, the protruding column is located in the linear groove, and a compression return spring is provided between the protruding column and the end of the linear groove away from the vertical center axis of the sleeve.

4. The special fixture for machining a gear pump body according to claim 1, characterized in that: A support platform is provided at the center of the operating table, and a through hole is provided at the center of the support platform for vertically penetrating the support platform. The support seat passes through the through hole. A brush is provided on the support platform, and the column can be flipped to the surface of the gear pump body to contact the brush.

5. The special fixture for machining a gear pump body according to claim 4, characterized in that: The support seat includes a reference seat and a protective shell. The protective shell is fixed at the center of the operating table. The bottom surface of the reference seat is provided with an annular slide groove, and the upper end of the protective shell is adapted to fit in the annular slide groove.

6. The special fixture for machining a gear pump body according to claim 5, characterized in that: A driving motor is arranged in the protective shell, and the output shaft of the driving motor is connected to the center of the bottom surface of the reference seat. When the driving motor is working, it can control the rotation of the reference seat.

7. The special fixture for machining a gear pump body according to claim 1, characterized in that: A groove is provided at the center of the upper surface of the support seat, and the groove is connected to four branch grooves. The four branch grooves are distributed in a circular array around the central axis of the groove. The angle between two adjacent branch grooves is 90°. The center seat is adapted in the groove, and the center seat can rotate freely in the groove.

8. The special fixture for machining a gear pump body according to claim 7, characterized in that: The four branch grooves divide the upper surface of the support base into four blank areas. Two shafts are provided on the support base. The shafts are rotatable and are located in two non-adjacent blank areas.

9. The special fixture for machining a gear pump body according to claim 8, characterized in that: The upper end of each shaft is hinged with a locking plate, which can be flipped to a horizontal state. The free end of the buckle plate is provided with a vertical through hole. Two threaded blind holes are provided on the upper surface of the support seat, and the two threaded blind holes are located in the other two blank areas.

10. The special fixture for machining a gear pump body according to claim 9, characterized in that: The through hole on the locking plate can be rotated to the top of the threaded blind hole as the locking plate rotates. At this time, the through hole is aligned with the threaded blind hole, and the thread can be screwed into the hole.

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