Processing tool for a vacuum pump housing

Abstract

The utility model belongs to vacuum pump casing processing technical field discloses the processing frock of vacuum pump casing, including the bottom plate, and the side -by -side setting one station and two stations on the bottom plate, set workpiece placement position on one station, four corners among workpiece placement position, wherein three corner places set up each one station fixed pad piece, another corner sets up the floating support subassembly, one station is located one side of outside still is provided with two one station positioning block, the opposite side of floating support subassembly still is provided with one station positioning block, and the adjacent place of workpiece placement position outside still is equipped with one station pressing plate, one station pressing plate pad piece is set up below one station pressing plate, and one station pressing plate is equipped with fixed bolt for positioning workpiece, and the front end and rear end on two stations set up each two station pad piece, and two station center places are equipped with two two station positioning core shafts, and each two station positioning core shaft is equipped with one two station pressing plate of movable connection. Shorten the processing time, set up the floating support subassembly on the bottom plate, can eliminate the problem that workpiece bottom plane flatness deviation is big, and the operation is convenient and fast and clamping stable.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum pump housing processing technology, and relates to processing tooling for vacuum pump housings. Background Technology

[0002] The workpiece is the housing component of a vacuum pump, with an irregular shape and a large deviation in the flatness of its bottom plane. Simultaneously, ensuring the accuracy and stability of the relative positions and hole spacing between the machined holes and locating surfaces presents significant challenges to machining. Existing machining fixtures are insufficient to meet these requirements. Furthermore, existing fixtures, designed to address the large flatness deviation of the bottom plane, require multiple locating blocks and pressure plates, necessitating constant adjustments with each stationary adjustment, extending machining time, and compromising accuracy. This results in low work efficiency, high labor costs, and a long lead time. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides a machining fixture for vacuum pump housings. The machining fixture completes two processes on a single machine. After the workpiece is fixed on the base plate, the base plate is rotated to complete the machining transition between the two processes. This shortens the machining time. The floating support assembly on the base plate eliminates the problem of large flatness deviations of the workpiece's bottom plane, making operation convenient, quick, and with stable clamping.

[0004] The above-mentioned objective of this utility model is achieved through the following technical solutions. The machining fixture for the vacuum pump housing includes a base plate with two workstations arranged side-by-side on it. A workpiece placement area is located on the first workstation. At three of the four corners of the workpiece placement area, a first-station fixing pad is installed; a floating support assembly is installed at the remaining corner. The floating support assembly includes a first-station floating support outer sleeve, a floating support mandrel, and a floating support locking bolt. The first-station floating support outer sleeve is mounted on the base plate, the floating support mandrel is mounted inside the first-station floating support outer sleeve, and the front end of the floating support locking bolt extends into the first-station floating support outer sleeve and engages with it. The internal floating support mandrel is movably connected and locked; two station positioning blocks are also provided on the outer side of the first station, and a station positioning block is also provided on the opposite side of the floating support assembly; a station pressure plate is also provided adjacent to the outer side of the workpiece placement position; a station pressure plate pad is provided below the station pressure plate; the station pressure plate is equipped with fixing bolts for positioning the workpiece; a second station pad is provided at the front and rear ends of the second station; two second station positioning mandrels are provided at the center of the second station; each second station positioning mandrel is equipped with a movably connected second station pressure plate.

[0005] Furthermore, four pressure plates are provided for each workstation. Two of them are located on the outer edge of the two workstation positioning blocks, and the workstation pressure plates are located adjacent to the workstation positioning blocks. The other two workstation pressure plates are symmetrically arranged with the aforementioned two workstation pressure plates.

[0006] Furthermore, the pressure plate pad for one workstation is mounted on the base plate by bolts.

[0007] Furthermore, a positioning block for a workstation is set on the outer periphery of the workpiece placement position.

[0008] Furthermore, the floating support jacket for one workstation is bolted to the base plate.

[0009] Furthermore, a spring is installed between the base plate and the bottom of the floating support mandrel. The floating support mandrel extends out from the top surface of the floating support outer sleeve at one workstation.

[0010] Furthermore, the centers of the two two-station positioning mandrels are on the same vertical line.

[0011] Furthermore, the two-station positioning mandrel is set to correspond to the bearing hole position on the workpiece.

[0012] Furthermore, the top of the second-position positioning mandrel is provided with a threaded hole, and the top of the second-position positioning mandrel is connected to the second-position pressure plate by bolts and the threaded hole.

[0013] Furthermore, the second-station pad is fixed to the base plate with bolts.

[0014] The advantages of this utility model compared with the prior art are: This utility model provides a machining fixture for a vacuum pump housing. The machining fixture allows for two processes to be completed on a single machine. After the workpiece is fixed on the base plate, the base plate is rotated to complete the machining transition between the two processes. A floating support assembly is installed on the base plate. The floating support mandrel can adapt to different flatness differences in the workpiece, ensuring the workpiece is stably fixed on the base plate. This eliminates the problem of large flatness deviations in the workpiece's bottom plane, making the operation convenient, fast, and stable. The workpiece and the base plate are integrated and rotate as a whole, allowing for the machining of the plane and side holes of two workpieces in a single clamping operation, resulting in convenient, fast, and more efficient work. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. All drawings are of the assembled workpiece.

[0016] Figure 1 This is a front view of the machining tooling for the vacuum pump housing of this utility model.

[0017] Figure 2 This is a top view of the machining fixture for the vacuum pump housing of this utility model.

[0018] Figure 3 This is a bottom view of the machining fixture for the vacuum pump housing of this utility model.

[0019] Figure 4 for Figure 3AA sectional view.

[0020] Figure 5 for Figure 1 BB cross-sectional view.

[0021] In the diagram: 1. Base plate, 2. Workpiece, 3. Station 1 fixed pad, 4. Station 1 floating support outer sleeve, 5. Floating support mandrel, 6. Floating support locking bolt, 7. Station 1 pressure plate, 8. Station 1 pressure plate pad A, 9. Station 1 pressure plate pad B, 10. Station 1 positioning block, 11. Station 2 pad, 12. Station 2 mandrel, 13. Station 2 pressure plate. Detailed Implementation

[0022] The present invention is described in detail below through specific embodiments, but this does not limit the scope of protection of the present invention. Unless otherwise specified, the experimental methods used in the present invention are all conventional methods, and the experimental equipment, materials, reagents, etc. used can all be obtained commercially.

[0023] Example 1 The machining fixture for the vacuum pump housing includes a base plate 1. A first station and a second station are arranged side-by-side on the base plate 1. A workpiece placement position is set on the first station. At three of the four corners of the workpiece placement position, a first station fixing pad 3 is installed; a floating support assembly is installed at the other corner. The floating support assembly includes a first station floating support outer sleeve 4, a floating support mandrel 5, and a floating support locking bolt 6. The floating support outer sleeve 4 is mounted on the base plate 1, and the floating support mandrel 5 is mounted inside the first station floating support outer sleeve 4. The front end of the floating support locking bolt 6 extends into the first station floating support outer sleeve 4 and engages with the internal floating support mandrel 5. The moving support spindle 5 is movably connected and locked; two first-station positioning blocks 10 are also provided on the outer side of the first station, and a first-station positioning block 10 is also provided on the opposite side of the floating support assembly; a first-station pressure plate 7 is also provided adjacent to the outer side of the workpiece placement position; a first-station pressure plate pad is provided below the first-station pressure plate 7; the first-station pressure plate 7 is equipped with fixing bolts for positioning the workpiece 2; a second-station pad 11 is provided at the front end and rear end of the second station; two second-station positioning spindles 12 are provided at the center of the second station; each second-station positioning spindle 12 is equipped with a movably connected second-station pressure plate 13.

[0024] Four pressure plates 7 are provided at each workstation. Two of them are located on the outer side of the two workstation positioning blocks 10, and the workstation pressure plates 7 are located adjacent to the workstation positioning blocks 10. The other two workstation pressure plates 7 are symmetrically arranged with the aforementioned two workstation pressure plates 7.

[0025] The pressure plate pad of the first station is set on the base plate 1 by bolts.

[0026] A positioning block 10 is set on the outer periphery of the workpiece placement position.

[0027] The floating support jacket 4 of the first workstation is bolted to the base plate 1.

[0028] A spring is installed between the bottom of the base plate 1 and the bottom of the floating support spindle 5.

[0029] The centers of the two two-position positioning mandrels 12 are on the same vertical line.

[0030] The positioning mandrel 12 at the second station is set to correspond to the bearing hole position on the workpiece 2.

[0031] The top of the second-position positioning mandrel 12 is provided with a threaded hole, and the top of the second-position positioning mandrel 12 is connected to the second-position pressure plate 13 by bolts and threaded holes.

[0032] The second workstation pad 11 is fixed to the base plate 1 by bolts.

[0033] In specific operation: Place the tooling on the existing machine tool, place the workpiece 2 on the three station-1 fixing pads 3, and place it against the two station-1 positioning blocks 10 on the outer side of the station. Push it against the four or three station-1 positioning blocks 10, and fix the floating support mandrel 5 by rotating the floating support locking bolts 6. The station-1 pressure plate 7 rotates and presses against the workpiece 2, and presses the workpiece 2 with bolts. Start the machine tool and start processing at station-1. After the workpiece 2 is processed at station-1, remove it, place it on the station-2 pad 11 with the bottom surface facing up, and after it is positioned and stabilized by the bearing hole on the workpiece 3, place the station-2 pressure plate 13 on the workpiece 2 to press it down. Press the workpiece 2 with the station-2 pressure plate 13 with bolts. Start the equipment and process the relevant dimensions on the bottom plane of the workpiece 2.

[0034] The embodiments described above are merely preferred embodiments of this utility model, and not all feasible embodiments of this utility model. For those skilled in the art, any obvious modifications made without departing from the principles and spirit of this utility model should be considered to be included within the scope of protection of the claims of this utility model.

Claims

1. A machining fixture for a vacuum pump housing, characterized in that, The base plate (1) has two stations arranged side by side. The first station has a workpiece placement position. At the four corners of the workpiece placement position, a first station fixing pad (3) is set at three corners. The other corner has a floating support assembly. The floating support assembly includes a first station floating support outer sleeve (4), a floating support mandrel (5), and a floating support locking bolt (6). The floating support outer sleeve (4) is set on the base plate (1), and the floating support mandrel (5) is set inside the first station floating support outer sleeve (4). The front end of the floating support locking bolt (6) extends into the first station floating support outer sleeve (4) and then connects with the floating support mandrel inside. (5) Movable connection and locking; two station positioning blocks (10) are also provided on the outer side of the first station, and a station positioning block (10) is also provided on the opposite side of the floating support assembly. A station pressure plate (7) is also provided at the adjacent position on the outer side of the workpiece placement position; a station pressure plate pad is provided below the station pressure plate (7); the station pressure plate (7) is equipped with fixing bolts for positioning the workpiece (2); a station pad (11) is provided at the front end and rear end of the second station; two station positioning mandrels (12) are provided at the center of the second station; each station positioning mandrel (12) is equipped with a movable connection station pressure plate (13).

2. The machining fixture for a vacuum pump housing as described in claim 1, characterized in that, Four station pressure plates (7) are provided, two of which are located on the outer side of the two station positioning blocks (10) and are located adjacent to the station positioning blocks (10). The other two station pressure plates (7) are symmetrically arranged with the aforementioned two station pressure plates (7).

3. The machining fixture for a vacuum pump housing as described in claim 1, characterized in that, A spring is installed between the bottom of the base plate (1) and the bottom of the floating support spindle (5).

4. The machining fixture for a vacuum pump housing as described in claim 1, characterized in that, The centers of the two two-position positioning mandrels (12) are on the same vertical line.

5. The machining fixture for a vacuum pump housing as described in claim 1, characterized in that, The two-position positioning mandrel (12) is set to correspond to the bearing hole position on the workpiece (2).

6. The machining fixture for a vacuum pump housing as described in claim 1, characterized in that, The top of the second-position positioning mandrel (12) is provided with a threaded hole, and the top of the second-position positioning mandrel (12) is connected to the second-position pressure plate (13) by bolts and threaded holes.

7. The machining fixture for a vacuum pump housing as described in claim 1, characterized in that, A positioning block (10) is set on the outer periphery of the workpiece placement position.

8. The machining fixture for a vacuum pump housing as described in claim 1, characterized in that, The floating support jacket (4) of the workstation is set on the base plate (1) by bolts.

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