Clamp for oil pump shell

Abstract

The utility model discloses a clamp for an oil pump shell. The clamp comprises a mounting seat, two groups of rotary pressing cylinders, a plurality of supporting parts and a plurality of first cylinders, a plurality of hole sites are selected on the oil pump shell for positioning, and a plurality of supporting parts are correspondingly distributed on the top surface of the mounting seat according to the positions of the selected hole sites. The multiple first air cylinders are used for supporting the oil pump shell together with the multiple supporting parts when in the lower limiting position, and are used for ejecting out the oil pump shell to separate the oil pump shell from the positioning pin when in the upper limiting position. When the rotary pressing air cylinder is in the upper limit position, the swing arm of the rotary pressing air cylinder is in the longitudinal direction, does not interfere with the installation of the oil pump shell on the multiple supporting parts, is switched to the lower limit position, rotates to the transverse direction, reaches the position above the oil pump shell and downwards presses the oil pump shell. The device has the advantages of being simple in structure, convenient to use and capable of improving efficiency.

Description

Technical Field

[0001] The utility model relates to the processing of an oil pump housing, and particularly to a fixture for an oil pump housing. Background Art

[0002] The overall shape of the oil pump housing is relatively complex. Generally, after casting, it still needs to be placed in a machining center for further processing. Correspondingly, a fixture is required to fix the oil pump housing. Currently, the fixture for fixing the oil pump housing is provided with multiple supports, and the top surface of the support matches the surface of the oil pump housing. Generally, it corresponds to the part of the edge plane of the oil pump housing, and then cooperates with the clamping block to clamp and fix the oil pump housing. The problems existing in this fixture for fixing the oil pump housing are: it is inconvenient to take out the oil pump housing, which affects the processing efficiency. Summary of the Utility Model

[0003] This application provides a fixture for an oil pump housing, which can solve the problems raised in the background art.

[0004] In this application, a fixture for an oil pump housing is provided, including:

[0005] A mounting seat;

[0006] Two groups of rotary pressing cylinders, one group is arranged at the first side position on the top surface of the mounting seat, and the other group is arranged at the opposite second side position;

[0007] Multiple supporting parts are arranged on the top surface of the mounting seat and are between the two groups of rotary pressing cylinders; the supporting part includes: a supporting column for fixedly connecting with the mounting seat and a positioning pin on the top surface of the supporting column;

[0008] Multiple first cylinders are arranged on the top surface of the mounting seat and are between the two groups of rotary pressing cylinders; when in the lower limit position, they are used to support the oil pump housing together with the multiple supporting parts, and when in the upper limit position, they are used to eject the oil pump housing to separate the oil pump housing from the positioning pin.

[0009] In some embodiments, the positioning pin is detachably connected to the supporting part.

[0010] In some embodiments, a connecting block is fixedly connected to the piston rod of the first cylinder; the connecting block can also be adjusted up and down in the fixed position on the piston rod.

[0011] In some embodiments, a pressing block is fixedly connected to the swing arm of the rotary pressing cylinder; the connecting block can also be adjusted up and down in the fixed position on the swing arm.

[0012] In some embodiments, the multiple first cylinders are all single-acting cylinders and are reset by springs.

[0013] In some embodiments, when the rotary pressing cylinder is at the lower limit position, each rotary pressing cylinder corresponds to a support part.

[0014] To sum up, in this application, a fixture for an oil pump housing includes a mounting base, two groups of rotary pressing cylinders, multiple support parts, and multiple first cylinders. Multiple hole positions are selected on the oil pump housing for positioning. According to the positions of these selected hole positions, multiple support parts are correspondingly distributed on the top surface of the mounting base. When the multiple first cylinders are at the lower limit position, they are used to support the oil pump housing together with the multiple support parts. When at the upper limit position, they are used to eject the oil pump housing to separate the oil pump housing from the positioning pins. When the rotary pressing cylinder is at the upper limit position, the swing arm of the rotary pressing cylinder is vertical and will not interfere with the installation of the oil pump housing onto the multiple support parts. When switched to the lower limit position, the swing arm rotates to the horizontal position, reaches above the oil pump housing, and presses down on the oil pump housing. It has the beneficial effects of simple structure, convenient use, and improved efficiency. Description of the Drawings

[0015] To better and more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the following will describe the drawings required for use in the embodiments of the present application or the background art.

[0016] Figure 1 It is a schematic diagram of the present application;

[0017] Figure 2 It is a schematic diagram of the air circuit for the downward movement of the rotary pressing cylinder and the first cylinder;

[0018] Figure 3 It is a schematic diagram of the air circuit for the upward movement of the rotary pressing cylinder;

[0019] Figure 4 It is a schematic diagram of the pressure block and the swing arm;

[0020] Figure 5 It is a schematic diagram of the first cylinder and the connecting block.

[0021] In the figure,

[0022] 1. Mounting base;

[0023] 2. Rotary pressing cylinder; 2a. Swing arm; 2a1. Pressure block; 2b. First air port; 2c. Second air port;

[0024] 3. Support part; 3a. Support column; 3b. Positioning pin;

[0025] 4. First cylinder; 4a. Connecting block;

[0026] 5. Solenoid valve; 5a. Three-way joint; 5b. Four-way joint. Detailed Embodiments

[0027] The following further explanations will be made in conjunction with the accompanying drawings. Unless otherwise defined, the technical terms or scientific terms used in this disclosure should have the ordinary meanings understood by those of ordinary skill in the field to which this disclosure pertains. The "first", "second" and similar terms used in this disclosure do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to represent relative position relationships, and when the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0028] Please refer to Figure 1 、 Figure 2 and Figure 3 , a fixture for an oil pump housing, comprising a mounting base 1, two groups of rotary pressing cylinders 2, a plurality of supporting parts 3 and a plurality of first cylinders 4.

[0029] The mounting base 1 can be in a plate shape, for mounting the remaining components and mounting the fixture to a machining center.

[0030] Two groups of rotary pressing cylinders 2, one group is arranged at the first side position on the top surface of the mounting base 1, and the other group is arranged at the opposite second side position. For the convenience of subsequent description of the orientation, the direction between the first side position and the second side position is set as the transverse direction. In the drawings, the numbers of the two groups of rotary pressing cylinders 2 are one and two respectively.

[0031] A plurality of supporting parts 3 are arranged on the top surface of the mounting base 1, between the two groups of rotary pressing cylinders 2. Each supporting part 3 includes a supporting column 3a for fixedly connecting with the mounting base 1 and a positioning pin 3b on the top surface of the supporting column 3a. More specifically, a plurality of hole positions are selected on the oil pump housing for positioning. According to the positions of these selected hole positions, the plurality of supporting parts 3 are correspondingly distributed on the top surface of the mounting base 1, and the heights of the supporting columns 3a in the plurality of supporting parts 3 can also be different.

[0032] In some embodiments, the positioning pin 3b is detachably connected to the supporting part 3. More specifically, the bottom surface of the positioning pin 3b can have a threaded section, and the top surface of the supporting part 3 can have a mating threaded hole.

[0033] The positioning pin 3b with different diameters can be replaced to better adapt to the hole positions on the oil pump housing.

[0034] When the rotary pressing cylinder 2 is at the upper limit position, the swing arm 2a of the rotary pressing cylinder 2 is vertical and will not interfere with the installation of the oil pump housing onto the multiple support portions 3. Process of installing the oil pump housing onto the multiple support portions 3: The oil pump housing is aligned through multiple positioning pins 3b and inserted downward into the positioning pins 3b. The positioning pins 3b restrict the movement and rotation of the oil pump housing, and the top surface of the support column 3a supports the oil pump housing. The rotary pressing cylinder 2 switches to the lower limit position, the swing arm 2a rotates to the horizontal position, reaches above the oil pump housing, and presses the oil pump housing downward.

[0035] Please refer to Figure 4 , in some embodiments, a pressing block 2a1 is fixedly connected to the swing arm 2a of the rotary pressing cylinder 2, and the pressing block 2a1 can also be adjusted vertically in its fixed position on the swing arm 2a. More specifically, threaded through holes are provided on the swing arm 2a; the pressing block 2a1 is columnar and is threadedly connected to the threaded through holes.

[0036] Adjusting the lower limit position of the rotary pressing cylinder 2 is not convenient. When the rotary pressing cylinder 2 switches to the lower limit position, if there is still a gap between the pressing block 2a1 and the oil pump housing, instead of adjusting the lower limit position of the rotary pressing cylinder 2, the pressing block 2a1 can be rotated to adjust the pressing block 2a1 so that the pressing block 2a1 moves downward to press the oil pump housing.

[0037] Please refer to Figure 1 and Figure 2 , in some embodiments, when the rotary pressing cylinder 2 is at the lower limit position, each rotary pressing cylinder 2 corresponds to a support portion 3. Correspondingly, if a pressing block 2a1 is provided on the swing arm 2a of the rotary pressing cylinder 2, then the pressing block 2a1 corresponds to the support portion 3.

[0038] The swing arm 2a of the rotary pressing cylinder 2 can press the oil pump housing more tightly, cooperate with the support portion 3 directly below, clamp the oil pump housing, and make the fixation of the oil pump housing more stable.

[0039] A plurality of first cylinders 4 are arranged on the top surface of the mounting seat 1 and are located between two groups of rotary pressing cylinders 2.

[0040] When the plurality of first cylinders 4 are at the lower limit position, they are used to support the oil pump housing together with the multiple support portions 3, and when at the upper limit position, they are used to eject the oil pump housing to separate the oil pump housing from the positioning pins 3b.

[0041] Please refer to Figure 5 , in some embodiments, a connecting block 4a is fixedly connected to the piston rod of the first cylinder 4, and the connecting block 4a can also be adjusted vertically in its fixed position on the piston rod. More specifically, threaded holes can be provided on the connecting block 4a, and a mating threaded section is provided at the top of the piston rod.

[0042] The lower limit position adjustment of the first cylinder 4 is inconvenient. When the first cylinder 4 switches to the lower limit position, if there is still a gap between the piston rod and the oil pump housing, instead of adjusting the lower limit position of the first cylinder 4, the connecting block 4a can be rotated to adjust the connecting block 4a so that the connecting block 4a moves upward to press against the oil pump housing.

[0043] The rotary pressing cylinder 2 and the first cylinder 4 can be controlled by two solenoid valves 5 respectively. More specifically, a three-way 5a, a four-way 5b and a hose can be used to form the corresponding gas path. The two solenoid valves 5 respectively switch all the rotary pressing cylinders 2 between the upper limit position and the lower limit position, and switch all the first cylinders 4 between the upper limit position and the lower limit position. The rotary pressing cylinder 2 is at the upper limit position, and the first cylinder 4 is at the lower limit position; place the oil pump housing; the rotary pressing cylinder 2 switches to the lower limit position and presses the oil pump housing; the oil pump housing is processed; the rotary pressing cylinder returns to the upper limit position; the first cylinder 4 switches to the upper limit position and ejects the oil pump housing; take out the oil pump housing; the first cylinder 4 returns to the lower limit position.

[0044] Taking the rotary pressing cylinder 2 as an example, when the electromagnet on the first side of the solenoid valve 5 is energized and the electromagnet on the second side is de-energized, the gas enters from the first air port 2b of the rotary pressing cylinder 2, causing the piston rod of the rotary pressing cylinder 2 to move downward (for the rotary pressing cylinder 2, the piston rod will also rotate during the downward movement, and the rotation angle can be 90 degrees), and the gas in the cylinder body is discharged from the second air port 2c; when the electromagnets on both the first side and the second side of the solenoid valve 5 are de-energized, the gas cannot enter the rotary pressing cylinder 2, and the gas in the cylinder body cannot leave either, and the piston rod of the rotary pressing cylinder 2 remains in the current position; when the electromagnet on the first side of the solenoid valve 5 is de-energized and the electromagnet on the second side is energized, the gas enters from the second air port 2c of the rotary pressing cylinder 2, causing the piston rod of the rotary pressing cylinder 2 to move upward, and the gas in the cylinder body is discharged from the first air port 2b.

[0045] Please refer to Figure 1 、 Figure 2 and Figure 3, in some embodiments, the plurality of first cylinders 4 are all single-acting cylinders of the spring return pre-extension type. That is, for the first cylinder 4, the air from the air pump overcomes the spring in the cylinder body to move the piston rod down to the lower limit and maintain it at the lower limit; the piston rod moves up to the upper limit and is maintained at the upper limit by the spring. Only the first air port 2b on the first cylinder 4 needs to be connected to the solenoid valve 5. Correspondingly, one solenoid valve 5 can be used to control the rotary pressing cylinder 2 and the first cylinder 4. The rotary pressing cylinder 2 and the first cylinder 4 are at the upper limit; place the oil pump housing and manually press down the oil pump housing to make it enter the positioning pin 3b. Correspondingly, the piston rod of the first cylinder 4 moves down; the rotary pressing cylinder 2 and the first cylinder 4 are switched to the lower limit to press the oil pump housing; the processing of the oil pump housing is completed; the rotary pressing cylinder 2 and the first cylinder 4 are restored to the upper limit. In this process, the rotary pressing cylinder 2 resumes relatively faster and first contacts the pressing of the oil pump housing, while the first cylinder 4 resumes relatively slower and then ejects the oil pump housing; take out the oil pump housing.

[0046] Since the upper limit of the first cylinder 4 is only used to eject the oil pump housing and the accuracy requirement is not high, a single-acting cylinder can be used to meet the requirement. At the same time, the setting of the air circuit between the solenoid valve 5 can be made simpler.

Claims

1. A fixture for an oil pump housing, characterized in that Comprising: Mounting base (1); Two groups of rotary pressing cylinders (2), one group is arranged at the first side position of the top surface of the mounting base (1), and the other group is arranged at the opposite second side position; A plurality of support parts (3) are arranged on the top surface of the mounting base (1) and are between the two groups of rotary pressing cylinders (2); The support part (3) includes: a support column (3a) for fixedly connecting with the mounting base (1) and a positioning pin (3b) on the top surface of the support column (3a); A plurality of first cylinders (4) are arranged on the top surface of the mounting base (1) and are between the two groups of rotary pressing cylinders (2); when in the lower limit position, they are used to support the oil pump housing together with the plurality of support parts (3), and when in the upper limit position, they are used to eject the oil pump housing to separate the oil pump housing from the positioning pin (3b).

2. The fixture for an oil pump housing according to claim 1, characterized in that, The positioning pin (3b) is detachably connected to the support part (3).

3. The fixture for an oil pump housing according to claim 1, wherein, A connecting block (4a) is fixedly connected to the piston rod of the first cylinder (4); the connecting block (4a) can also be adjusted up and down in the fixed position on the piston rod.

4. A fixture for an oil pump housing according to claim 1, wherein A pressing block (2a1) is fixedly connected to the swing arm (2a) of the rotary pressing cylinder (2); the connecting block (4a) can also be adjusted up and down in the fixed position on the swing arm (2a).

5. The fixture for an oil pump housing according to claim 1, wherein The plurality of first cylinders (4) are all single-acting cylinders with spring return.

6. The fixture for an oil pump housing according to claim 1, characterized in that, When the rotary pressing cylinder (2) is in the lower limit position, each rotary pressing cylinder (2) corresponds to a support part (3).

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