Pump cover turning clamp
By designing a pump cover turning fixture, which uses a base, positioning seat, slide, expansion sleeve and tie rod structure, the turning of both ends of the pump cover is realized. This solves the problem of high fixture cost in the existing technology, reduces manufacturing cost and simplifies the clamping process.
Patent Information
- Application Number
- CN202520512269.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-21
AI Technical Summary
In the existing technology, the machining of the two end faces of the pump cover requires two sets of fixtures, which results in high fixture manufacturing costs and high equipment investment.
Design a pump cover turning fixture, including a base, a positioning seat, a slide, an expansion sleeve, a tie rod, and a limiting plate. The expansion sleeve is driven by the tie rod to expand, thus achieving simple clamping of the pump cover, which is suitable for lathe machining.
It enables the turning of both ends of the pump cover using a single set of fixtures, reducing fixture manufacturing costs and simplifying the clamping process.
Smart Images
Figure CN223933169U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of turning fixtures, specifically to a pump cover turning fixture. Background Technology
[0002] The pump cover is used to connect to the side of the pump body. Both sides of the pump cover have important mating surfaces. In the existing technology, two sets of fixtures need to be designed for machining the two sides of the pump cover, and the machining needs to be carried out by CNC milling machine or machining center. The fixture manufacturing cost is high and the equipment investment is high. Summary of the Invention
[0003] In view of the shortcomings of the prior art, the present invention provides a pump cover turning fixture, which has a simple structure, is easy to clamp, and can be used for lathe machining.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A pump cover turning fixture, characterized in that it includes a base, a positioning seat, a slide, an expansion sleeve, a pull rod, and a limiting plate, wherein the positioning seat is disposed on the base, the top surface of the positioning seat has a positioning plane, the positioning seat is provided with a set of diamond-shaped pins, the center of the positioning seat has a tapered portion, the expansion sleeve is sleeved on the tapered portion, the upper end of the pull rod passes through the tapered portion and is connected to the limiting plate, the limiting plate contacts and limits the end face of the expansion sleeve, the limiting plate is locked to the end of the pull rod by screws, the base has a movable cavity, the slide is movably disposed in the movable cavity, and the lower part of the pull rod is connected to the slide.
[0006] Furthermore, the inner surface of the expansion sleeve is a tapered surface that matches the tapered portion.
[0007] Furthermore, the upper end of the expansion sleeve has a flange, and a pad is provided between the inner side of the flange and the upper end face of the pull rod, and the pad is fitted onto the screw.
[0008] Furthermore, the rear end of the pull rod is connected to the drive cylinder on the lathe.
[0009] Furthermore, the outer side of the root of the tapered portion has a receiving groove.
[0010] The advantages of this utility model include: simple structure, low manufacturing cost of fixture, convenient clamping, and one set of fixtures can adapt to the turning and machining of both ends of the pump cover. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model;
[0012] Figure 2 This is a top view of the utility model in its clamping state;
[0013] Figure 3 This is a schematic diagram of the reverse clamping structure of the cover plate of this utility model. Detailed Implementation
[0014] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0015] One such Figure 1-3 The pump cover turning fixture shown includes a base 1, a positioning seat 2, a slide 3, an expansion sleeve 4, a pull rod 5, and a limiting plate 6. The base 1 is used to mount on the lathe spindle, and the coaxial positioning seat 2 is mounted on the base 1. The top surface of the positioning seat 2 has a positioning plane, on which one end face of the pump cover to be machined is positioned. To prevent the pump cover from rotating, a set of diamond-shaped pins 7 arranged diagonally along the pump cover is provided on the positioning seat 2. The center of the positioning seat 2 has a tapered portion 8, on which the expansion sleeve 4 is fitted and can slide axially. One end of the pull rod 5 passes through the tapered portion 8 and connects to the limiting plate 6, and the rear end of the pull rod 5 is connected to the drive cylinder on the lathe. The limiting plate 6 contacts and limits the end face of the expansion sleeve 4. The expansion sleeve 4 can be expanded by the movement of the limiting plate 6 with the pull rod 5. The limiting plate 6 is locked to the end of the pull rod 5 by screws 10. The diameter of the limiting plate 6 does not exceed the diameter of the inner hole of the inner bushing of the pump cover, thus facilitating the clamping of the pump cover. To ensure smooth movement of the pull rod 5, the base 2 in this embodiment has a movable cavity, and the slide 3 is movably disposed in the movable cavity. The slide 3 slides and guides the movable cavity, and the lower part of the pull rod 5 is connected to the slide 3.
[0016] To make the expansion sleeve 4 expand in a cylindrical structure, the inner surface of the expansion sleeve 4 is a tapered surface that matches the tapered part 8.
[0017] To prevent the expansion sleeve 4 from being excessively compressed and expanded, the upper end of the expansion sleeve 4 in this embodiment has a flange, and a pad 9 is provided between the inner side of the flange and the upper end face of the pull rod 5. The pad 9 is fitted onto the screw 10, and the pad 9 is also used to push the expansion sleeve 4 out when it is loosened.
[0018] like Figure 3 As shown, the outer side of the tapered part 8 has a receiving groove 11, which is used to receive the protruding ring part on the outer side of the pump cover when the pump cover is clamped in reverse.
[0019] 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 pump cover turning fixture, characterized in that: The assembly includes a base (1), a positioning seat (2), a slide (3), an expansion sleeve (4), a pull rod (5), and a limiting plate (6). The positioning seat (2) is disposed on the base (1), and the top surface of the positioning seat (2) has a positioning plane. The positioning seat (2) is provided with a set of diamond-shaped pins (7). The center of the positioning seat (2) has a conical part (8). The expansion sleeve (4) is sleeved on the conical part (8). The upper end of the pull rod (5) passes through the conical part (8) and is connected to the limiting plate (6). The limiting plate (6) contacts and limits the end face of the expansion sleeve (4). The limiting plate (6) is locked to the end of the pull rod (5) by screws (10). The base (1) has a movable cavity. The slide (3) is movably disposed in the movable cavity. The lower part of the pull rod (5) is connected to the slide (3).
2. The pump cover turning fixture according to claim 1, characterized in that: The inner surface of the expansion sleeve (4) is a tapered surface that matches the tapered part (8).
3. The pump cover turning fixture according to claim 1, characterized in that: The upper end of the expansion sleeve (4) has a flange, and a pad (9) is provided between the inner side of the flange and the upper end face of the pull rod (5). The pad (9) is fitted onto the screw (10).
4. A pump cover turning fixture according to claim 1, characterized in that: The rear end of the pull rod (5) is connected to the drive cylinder on the lathe.
5. A pump cover turning fixture according to claim 1, characterized in that: The tapered portion (8) has a receiving groove (11) on the outer side of its root.