Positioning clamp with built-in oil way

Abstract

The utility model discloses a positioning fixture with built-in oil ways, which comprises a positioning bottom plate, two groups of oil ways are arranged in the positioning bottom plate, the oil ways are communicated with an oil cylinder arranged on the positioning bottom plate, and the oil cylinder drives a claw arranged at the upper end of the oil cylinder to move to fix a hub. The positioning bottom plate is further provided with an adjustable positioning pin and a positioning polish rod fixedly arranged in the middle of the positioning bottom plate. The oil way is arranged in the positioning bottom plate, so that the problem that the multi-angle rotating machining difficulty of the hub by machining equipment is large is solved; meanwhile, through the arrangement of the clamping jaw, the adjustable positioning pin and the positioning polish rod, products of different specifications can be conveniently positioned, and the universality of the clamp is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining, and particularly relates to a positioning fixture with an internal oil circuit for machining motorcycle wheels. Background Technique

[0002] When machining a motorcycle wheel, the wheel is usually fixed on a machining device for machining, and a fixed fixture is used for clamping and fixing. However, the external shape structure of the current motorcycle aluminum alloy wheel is becoming more and more complex, and the requirements for machining equipment and positioning tooling fixtures are becoming more and more diverse. Generally, the fixture uses pneumatic or hydraulic cylinders for fixing, but the existing fixtures all use external pipelines, so it is difficult to meet the requirements of multi-angle rotary machining on a five-axis device. Content of the Utility Model

[0003] Aiming at the above deficiencies, the purpose of the utility model is to provide a positioning fixture with an internal oil circuit, which solves the problem that it is difficult for the positioning fixture in the prior art to meet the requirements of multi-angle rotary machining on a machining device with external pipelines.

[0004] To achieve the above purpose, the technical solution provided by the utility model is:

[0005] A positioning fixture with an internal oil circuit includes a positioning bottom plate, which is internally provided with two groups of oil circuits. The oil circuits are communicated with hydraulic cylinders arranged on the positioning bottom plate, and the hydraulic cylinders drive the claws arranged at their upper ends to move to fix the wheel. An adjustable positioning pin and a positioning optical rod fixedly arranged in the middle of the positioning bottom plate are also provided on the positioning bottom plate.

[0006] With the above structural design, the oil circuits are built inside the positioning bottom plate, which solves the problem of great difficulty in multi-angle rotary machining of the wheel by the machining device; at the same time, through the arranged claws, adjustable positioning pins and positioning optical rods, it is convenient to position products of different specifications, improving the versatility of the fixture.

[0007] Preferably, the two groups of oil circuits arranged in the positioning bottom plate are cross-arranged and are arranged in two layers. There are 4 hydraulic cylinders, which are respectively arranged at the four corners of the positioning bottom plate.

[0008] With the above structural design, clamping can be realized at 180-degree diagonals, improving the clamping stability.

[0009] Preferably, a piston rod that moves up and down is arranged in the hydraulic cylinder, and the claw is fixedly installed on the piston rod. The claw includes an installation part, and a plurality of clamping parts with different specifications are arranged on the installation part.

[0010] With the above structural design, by setting multiple clamping parts, when it is necessary to clamp hubs of different specifications, different clamping parts can be adjusted for clamping and fixing, further improving the versatility of the fixture.

[0011] Preferably, a support block for placing the hub is provided at the front end of the oil cylinder, and the clamping part of the claw is higher than the upper end surface of the support block.

[0012] Preferably, the positioning pin is installed on the positioning base plate through an adjusting structure. The adjusting structure includes a first slide table and a second slide table, and the second slide table is adjustably and perpendicularly installed on the first slide table.

[0013] Preferably, a first chute is provided on the first slide table, a second chute is provided on the second slide table, and the first chute and the second chute are in a "convex" shape structure. A first mounting hole is provided on the second slide table, and the second slide table is fixedly connected to the first chute through a bolt passing through the first mounting hole; a fixing hoop is provided at the lower end of the positioning pin, and second mounting holes are provided at both ends of the fixing hoop, and the fixing hoop is fixedly connected to the second chute through a bolt passing through the second mounting hole.

[0014] With the above structural design, the design of the double-slide-table structure can achieve circumferential rotation positioning of different products, improving the stability of hub fixation.

[0015] Preferably, the positioning optical rod is detachably installed on the positioning base plate, and a centering sleeve is provided on the positioning optical rod, which is matched with the center of the hub.

[0016] With the above structural design, by replacing the positioning optical rod with different heights according to different products, the versatility of the fixture is further improved.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. The present utility model realizes the clamping of the hub by arranging 2 groups of oil circuit driven oil cylinders inside the positioning base plate, solving the problem that it is difficult to perform multi-angle rotary machining on the hub by processing equipment.

[0019] 2. The present utility model is provided with a double-slide-table structure, multiple clamping parts with different specifications are provided on the mounting part of the claw, and the positioning optical rod is designed to be detachable and replaceable. When it is necessary to position hubs of different specifications, the positioning pin can be adjusted through the slide table, the position of the clamping part of the claw can be adjusted, and the positioning optical rod can be replaced. Therefore, the versatility of the positioning fixture is improved. Description of the Drawings

[0020] The accompanying drawings are used to provide a further understanding of the present utility model and form a part of the specification. Together with the following specific embodiments, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0021] Figure 1 is a schematic structural view of the present utility model;

[0022] Figure 2 is a schematic structural view of the present utility model after installing the wheel hub;

[0023] Figure 3 is Figure 1 a schematic structural view of the built-in oil circuit of the positioning base plate in

[0024] In the figure:

[0025] positioning base plate 1, oil circuit 2, oil cylinder 3, piston rod 3a, claw 4, mounting portion 4a, clamping portion 4b, cushion block 4c, positioning pin 5, fixing hoop 5a, second mounting hole 5b, positioning optical rod 6, centering sleeve 6a, adjusting structure 7, first sliding table 7a, second sliding table 7b, first chute 7c, second chute 7d, first mounting hole 7e, support block 8. Specific Embodiments

[0026] In order to describe in detail the technical content, structural features, achieved purposes and effects of the present utility model, the following is described in detail in conjunction with the embodiments and with reference to the accompanying drawings.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0028] Please refer to Figures 1 to 3, a positioning fixture with a built-in oil circuit, which is used in cooperation with machining equipment and installed on the machining equipment to clamp and position the hub and then process the hub through the frame equipment. The positioning fixture includes a positioning base plate 1, and an installation plate is further provided below the positioning base plate 1 for installation with the frame equipment. Two groups of oil circuits 2 are built in the positioning base plate 1, with opposite directions forming a group of oil circuits, and the two built-in oil circuits 2 are arranged in a cross pattern and in two layers without affecting each other. The oil circuit 2 is communicated with an oil cylinder 3 arranged on the positioning base plate 1, and there are 4 oil cylinders 3 on the positioning base plate 1, which are respectively arranged at the four corners of the positioning base plate 1 to facilitate clamping and fixing the hub at multiple positions and improve the stability of the hub. The oil cylinder 3 drives the claw 4 arranged at its upper end to move to fix the edge of the hub. An adjustable positioning pin 5 and a positioning optical rod 6 fixedly arranged in the middle of the positioning base plate 1 are also provided on the positioning base plate 1. The positioning pin 5 passes through the hub to prevent the hub from moving during rotary machining. The positioning optical rod 6 can be used for positioning and limiting during installation. At the same time, the positioning pin 5 and the positioning optical rod 6 are detachably and adjustably arranged, and the position can be adjusted and replaced for different products, improving the stability of the positioning fixture.

[0029] Please continue to refer to Figure 1 , specifically, a support block 8 for placing the hub is provided at the front end of the oil cylinder 3 for placing and supporting the hub. A piston rod 3a that moves up and down is arranged in the oil cylinder 3, and the claw 4 is fixedly installed on the piston rod 3a. The claw 4 includes an installation part 4a, and a plurality of clamping parts 4b with different specifications are provided on the installation part 4a. The clamping part 4b of the claw 4 is higher than the upper end surface of the support block 8 to facilitate the piston rod 3a to move up and down to drive the clamping part 4b to fix the hub. In this embodiment, two clamping parts 4b are provided and have different heights, and can be adjusted for hubs with different thicknesses by simply rotating the clamping part 4b installed on the piston rod 3a. Further, a cushion block 4c is provided on the contact surface between the clamping part 4b and the hub to prevent damage to the hub during fixation.

[0030] The positioning pin 5 is installed on the positioning base plate 1 through an adjusting structure 7. The adjusting structure 7 includes a first sliding table 7a and a second sliding table 7b. The second sliding table 7b is adjustably and perpendicularly installed on the first sliding table 7a. Among them, a first sliding groove 7c is formed on the first sliding table 7a, and a second sliding groove 7d is formed on the second sliding table 7b. The first sliding groove 7c and the second sliding groove 7d are in a "convex" shape structure. A first mounting hole 7e is formed on the second sliding table 7b. The second sliding table 7b is fixedly connected to the first sliding groove 7c by a bolt passing through the first mounting hole 7e. The lower end of the bolt is clamped in the first sliding groove 7c, and the upper end is fixed by a nut. A fixing hoop 5a is provided at the lower end of the positioning pin 5. Second mounting holes 5b are formed at both ends of the fixing hoop 5a. The fixing hoop 5a is fixedly connected to the second sliding groove 7d by a bolt passing through the second mounting holes 5b. The adjusting structure 7 adopts a double-sliding-table structure, so that position adjustment in multiple directions can be performed to adapt to different products for limiting.

[0031] The positioning optical rod 6 is detachably installed on the positioning base plate 1, which is convenient for replacing the positioning optical rod 6 to adapt to different product heights. A centering sleeve 6a is provided on the positioning optical rod 6, and the centering sleeve 6a is fixedly matched with the center of the hub to further ensure the stability of the hub clamping.

[0032] The working principle of the present utility model is as follows:

[0033] When it is necessary to install the hub on this positioning fixture for processing the hub, first, when installing the hub, the positioning optical rod 6 is docked with the center of the hub, and the centering sleeve 6a is fixed to the center of the hub. At the same time, the position of the positioning pin 5 is adjusted according to the specification size of the hub, so that the positioning pin 5 passes through the hub to limit the hub to prevent its rotation and movement. At this time, the side edge of the hub is placed on the support block 8, and at the same time, a suitable clamping part 4b is selected according to the size of the hub, and then the piston rod 3a and the claw 4 are driven by the oil cylinder 3 to move downward to fix the hub. Therefore, the present utility model avoids the interference during processing caused by the external oil pipeline through the internal setting of the oil circuit 2 of the oil cylinder 3. At the same time, the claw 4, the positioning pin 5 and the positioning optical rod 6 of the present utility model adopt an adjustable or replaceable design, so that they can be adjusted and replaced according to different products, thus improving the versatility of this positioning fixture.

[0034] Based on the disclosure and teachings of the above specification, those skilled in the art to which the present utility model pertains can also make changes and modifications to the above embodiments. Therefore, the present utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present utility model should also fall within the protection scope of the claims of the present utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model. Other devices using the same or similar ones are all within the protection scope of the present utility model.

Claims

1. A positioning fixture with a built-in oil circuit, characterized in that It includes a positioning base plate (1) which is internally provided with two groups of oil circuits (2). The oil circuits (2) are communicated with an oil cylinder (3) arranged on the positioning base plate (1), and the oil cylinder (3) drives a claw (4) arranged at its upper end to move to fix the hub. The positioning base plate (1) is also provided with an adjustable positioning pin (5) and a positioning optical rod (6) fixedly arranged in the middle of the positioning base plate (1).

2. The positioning fixture with an internal oil circuit according to claim 1, characterized in that The two groups of oil circuits (2) arranged in the positioning base plate (1) are cross - arranged and are arranged in two layers. There are 4 oil cylinders (3), which are respectively arranged at the four corners of the positioning base plate (1).

3. The positioning fixture with an internal oil circuit according to claim 1, characterized in that, The oil cylinder (3) is internally provided with a piston rod (3a) that moves up and down. The claw (4) is fixedly installed on the piston rod (3a). The claw (4) includes a mounting portion (4a), and a plurality of clamping portions (4b) with different specifications are arranged on the mounting portion (4a).

4. The positioning fixture with an internal oil circuit according to claim 3, characterized in that, A support block (8) for placing the hub is arranged at the front end of the oil cylinder (3). The clamping portion (4b) of the claw (4) is higher than the upper end surface of the support block (8).

5. The positioning fixture with an internal oil circuit according to claim 1, characterized in that The positioning pin (5) is installed on the positioning base plate (1) through an adjusting structure (7). The adjusting structure (7) includes a first sliding table (7a) and a second sliding table (7b). The second sliding table (7b) is adjustably and perpendicularly installed on the first sliding table (7a).

6. The positioning fixture with an internal oil path as described in claim 5, characterized in that, A first sliding groove (7c) is formed on the first sliding table (7a), and a second sliding groove (7d) is formed on the second sliding table (7b). The first sliding groove (7c) and the second sliding groove (7d) are in a "convex" - shaped structure. A first mounting hole (7e) is formed on the second sliding table (7b). The second sliding table (7b) is fixedly connected to the first sliding groove (7c) by bolts passing through the first mounting hole (7e). A fixing hoop (5a) is arranged at the lower end of the positioning pin (5). Second mounting holes (5b) are formed at both ends of the fixing hoop (5a). The fixing hoop (5a) is fixedly connected to the second sliding groove (7d) by bolts passing through the second mounting holes (5b).

7. The positioning fixture with an internal oil circuit according to claim 1, characterized in that The positioning optical rod (6) is detachably installed on the positioning base plate (1), and a centering sleeve (6a) is arranged on the positioning optical rod (6), and the centering sleeve (6a) cooperates with the center of the hub.

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