Double-station pump cover end face machining clamp
By designing a dual-station pump cover end face machining fixture and adopting structures such as positioning seats and expansion cores, the problem of needing two sets of fixtures to process pump covers in the existing technology has been solved, and low-cost and high-efficiency pump cover processing has been achieved.
Patent Information
- Application Number
- CN202520533929.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-25
AI Technical Summary
The existing technology requires two sets of fixtures to process the two end faces and holes of the variable displacement oil pump cover, which results in high cost, complicated clamping method and reduced processing efficiency.
Design a dual-station pump cover end face machining fixture, which adopts a first clamping station and a second clamping station arranged in parallel, combined with a positioning seat, lever clamping cylinder, expansion core and other structures, to realize the simultaneous machining of the front and back sides of the pump cover with one set of fixture.
It achieves a simple structure and convenient clamping, reduces fixture costs, and can complete the machining of both sides of the pump cover in one clamping process, thus improving machining efficiency.
Smart Images
Figure CN223917350U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to machine tool fixture field, concretely relates to a double position pump cover end face machine tool fixture. BACKGROUND
[0002] Because variable oil pump design structure is complex, is provided with multiple connecting hole positions on the pump cover, and the pump cover side is connected with the pump body end face, therefore needs to machine the connecting end face and multiple hole inner walls and hole end faces on the pump cover, thereby improves assembly accuracy. In the prior art, two sets of fixtures are needed to machine the end faces and holes on both sides of the workpiece, which is high in fixture cost, complex in clamping mode, and needs to replace the fixture in the middle, affecting the machining efficiency. SUMMARY
[0003] In view of the above deficiencies in the prior art, the utility model provides a double position pump cover end face machine tool fixture, which is simple in structure and can machine the pump cover hole and connecting end face with one set of fixture.
[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0005] A double position pump cover end face machine tool fixture, characterized by comprising a fixture base plate, a first clamping station and a second clamping station are arranged side by side on the fixture base plate, wherein the first clamping station comprises a positioning seat arranged on the fixture base plate and a lever pressing cylinder, the lever pressing cylinder is arranged on the side surface of the positioning seat, the pressing arm of the lever pressing cylinder is opposite to the top surface of the positioning seat, a fixed positioning block is arranged on the positioning seat, an adjustable positioning block opposite to the fixed positioning block is arranged on one side of the positioning seat, the fixed positioning block and the adjustable positioning block are provided with V-shaped positioning surfaces, the positioning seat and the fixture base plate are provided with through holes corresponding to the hole positions on the pump cover, the second clamping station comprises a positioning column and an expansion core arranged on the fixture base plate.
[0006] Further, a sliding support is arranged on the fixture base plate, a sliding groove is arranged on the sliding support, and the adjustable positioning block is slidably arranged on the sliding support.
[0007] Further, the number of lever pressing cylinders is two, and they are arranged opposite to the two sides of the positioning seat.
[0008] Further, the number of expansion cores is two, each expansion core comprises a tapered block arranged on the fixture base plate, an expansion sleeve sleeved on the tapered block, and a pull rod penetrating the axis of the tapered block, the upper end of the pull rod is provided with a disc head limiting the expansion sleeve, and the lower end of the pull rod is connected with a driving device.
[0009] Furthermore, a top block is fitted onto the upper part of the pull rod, the top block being positioned within an annular groove on the pull rod and below the flange on the upper part of the expansion sleeve.
[0010] Furthermore, the driving device includes a tensioning cylinder inverted on the base plate of the clamp, and the front end of the piston rod of the tensioning cylinder is connected to the lower part of the pull rod through a connecting block.
[0011] The advantages of this utility model include: simple structure, convenient clamping, low fixture cost, and the ability to clamp two pump covers at the same time to achieve one-time processing of the front and back sides, thereby improving machining efficiency. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model;
[0013] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;
[0014] Figure 3 yes Figure 2 A magnified view of a portion of the image. Detailed Implementation
[0015] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0016] One such Figures 1-3 The dual-station pump cover end face machining fixture shown includes a fixture base plate 1. The fixture base plate 1 has a first clamping station and a second clamping station arranged side-by-side. The first clamping station is used to clamp the front of the pump cover for machining the inner wall and end face of the outer hole. The first clamping station includes a positioning seat 2 and a lever clamping cylinder 3 mounted on the fixture base plate 1. Two lever clamping cylinders 3 are arranged opposite each other on the side of the positioning seat 2, with the pressure arm of the lever clamping cylinder 3 facing the top surface of the positioning seat 2, used to press the edge of the pump cover onto the positioning seat 2. To ensure accurate positioning of the pump cover, a fixing positioning block 4 is provided on the positioning seat 2. A movable positioning block 5 is provided on one side of the positioning seat 2, opposite to the fixed positioning block 4. Both the fixed positioning block 4 and the movable positioning block 5 have V-shaped positioning surfaces for positioning the arc surfaces of the two ends of the pump cover. When the pump cover is placed on the top surface of the positioning seat 2, the pump cover is first positioned by the fixed positioning block 4 and the movable positioning block 5, and then pressed by the lever clamping cylinder 3. The positioning seat 2 and the fixture base plate 1 have through holes corresponding to the holes on the pump cover, which facilitates the falling of chips when machining holes on the pump cover.
[0017] Furthermore, a sliding support 8 is provided on the fixture base plate 1, and a sliding groove is provided on the sliding support 8. The movable positioning block 5 is slidably disposed on the sliding support 8.
[0018] The second clamping station is used to clamp the reverse side of the pump cover, which is used to process the inner side of the pump cover that contacts the pump body. The second clamping station includes a positioning post 6 and an expansion core 7 set on the fixture base plate 1. There are two expansion cores 7. Each expansion core 7 includes a conical block 10 set on the fixture base plate 1, an expansion sleeve 11 sleeved on the conical block 10, and a pull rod 12 passing through the axis of the conical block 10. The upper end of the pull rod 12 has a disc head that limits the expansion sleeve 11, and the lower end of the pull rod 12 is connected to a driving device 13. When the driving device 13 pulls the pull rod 12 downward, the expansion sleeve 11 slides relative to the conical block 10, and the expansion sleeve 11 expands so that it can tighten the hole on the pump cover, thereby fixing the pump cover.
[0019] To facilitate the release of the clamp and the retraction of the expansion sleeve 11, a top block 14 is fitted on the upper part of the pull rod 12. The top block 14 is positioned within an annular groove on the pull rod 12 and below the flange on the upper part of the expansion sleeve 11. When the pull rod 12 is pushed upward, the top block 14 pushes the expansion sleeve 11 up, thereby moving the expansion sleeve 11 toward the small end of the conical block 10. The drive device 13 includes a tensioning cylinder 15 inverted on the clamp base plate 1. The front end of the piston rod of the tensioning cylinder 15 is connected to the lower part of the pull rod 12 via a connecting block 16.
[0020] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A two-station pump cover end facing machine fixture, characterized by: The utility model provides a clamp bottom plate (1) is provided with first clamping station, second clamping station arranged side by side, wherein the first clamping station includes the positioning seat (2) set up on the clamp bottom plate (1), lever pressing cylinder (3), the lever pressing cylinder (3) is set up in the side of positioning seat (2), and the pressing arm of lever pressing cylinder (3) is directly opposite the top surface of positioning seat (2), the positioning seat (2) is provided with fixed positioning block (4), one side of positioning seat (2) is provided with movable positioning block (5) opposite fixed positioning block (4), both fixed positioning block (4) and movable positioning block (5) have V-shaped locating surface, the positioning seat (2) and clamp bottom plate (1) have through hole corresponding to the hole position on the pump cover, and the second clamping station includes positioning column (6) and inflation core (7) set up on the clamp bottom plate (1).
2. A two-station pump cover end facing machine clamp as defined in claim 1 wherein: The clamp bottom plate (1) is provided with a sliding support (8), and the sliding support (8) is provided with a sliding groove.
3. A two-station pump cover end facing machine clamp as defined in Claim 1, wherein: The number of lever pressing cylinders (3) is two, and they are oppositely arranged on both sides of the positioning seat (2).
4. The dual station pump cover end facing machine clamp of claim 1, wherein: The number of inflation cores (7) is two, each inflation core (7) includes a tapered block (10) arranged on the clamp bottom plate (1), an expansion sleeve (11) sleeved on the tapered block (10), and a pull rod (12) penetrating through the axis of the tapered block (10), wherein the upper end of the pull rod (12) has a disc head limiting the expansion sleeve (11), and the lower end of the pull rod (12) is connected with a driving device (13).
5. A two-station pump cover end facing machine clamp as defined in claim 4 wherein: A top block (14) is sleeved on the upper part of the pull rod (12), and the top block (14) is limited in the ring groove on the pull rod (12), and the top block (14) is limited below the flange on the upper part of the expansion sleeve (11).
6. A two-station pump cover end facing machine clamp as defined in Claim 4 wherein: The driving device (13) includes a tensioning cylinder (15) inverted on the clamp bottom plate (1), and the front end of the piston rod of the tensioning cylinder (15) is connected with the lower part of the pull rod (12) through a connecting block (16).