A quick positioning fixture for special-shaped castings used in the production of hydraulic cylinders

Abstract

The utility model discloses a special-shaped casting quick positioning fixture for hydraulic cylinder production, which belongs to the technical field of hydraulic cylinder processing tooling, and comprises: a base, which is cylindrical, a sinking groove and an air avoidance groove are provided on the top surface of the base, the air avoidance groove is connected to the sinking groove and the outer wall of the base, and a plurality of positioning holes arranged in a ring array are provided on the top surface of the base; a bottom plate, which is fixedly connected to the bottom surface of the base; and a plurality of locking mechanisms, which are slidably connected to the base. The utility model avoids interference with the concave and convex surfaces of the special-shaped casting by providing the sinking groove and the air avoidance groove on the base, utilizes the flange part of the special-shaped casting to be placed on the top surface of the base, aligns the flange hole with any positioning hole, randomly slides the locking mechanism on the base to the flange hole, and the locking mechanism passes through the flange hole and the positioning hole to quickly fix the special-shaped casting and the base, so that the clamping operation is simple and convenient, and the clamping effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic cylinder processing tooling, in particular to a special-shaped casting quick positioning fixture for the production of hydraulic cylinders. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. Some parts of the hydraulic cylinder are made by casting technology.

[0003] At present, the special-shaped casting valve body is processed by drilling side holes with a simple fixture. There are concave and convex surfaces on the side of the special-shaped casting valve body. The corresponding angle needs to be adjusted each time it is clamped, which makes the clamping cumbersome and easy to fail. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned problems and to propose a fast positioning fixture for special-shaped castings used in the production of hydraulic cylinders.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solution: a special-shaped casting rapid positioning fixture for hydraulic cylinder production, which includes:

[0006] A base, which is cylindrical, with a sinking groove and a void-avoiding groove on the top surface of the base, the void-avoiding groove connecting the sinking groove and the outer wall of the base, and a plurality of positioning holes arranged in a circular array on the top surface of the base;

[0007] A bottom plate, which is fixedly connected to the bottom surface of the base;

[0008] A plurality of locking mechanisms are slidably connected to the base, and the plurality of locking mechanisms extend above the base.

[0009] As a further description of the above technical solution:

[0010] The locking mechanism includes a lower slider, an upper slider, a driving motor and a screw rod. The lower bent end of the lower slider is slidably connected to the base, the upper slider is slidably connected in the lower slider, the screw rod passes through the upper slider and is screwed to the lower slider. The driving motor is installed on the upper slider, and the driving motor is connected to and drives the screw rod. A positioning column is provided at the upper bent end of the upper slider, and the positioning column is aligned with any of the positioning holes.

[0011] As a further description of the above technical solution:

[0012] A slide groove is provided on the bottom surface of the base, and the lower bent end is slidably connected in the slide groove.

[0013] As a further description of the above technical solution:

[0014] A rectangular groove is formed on the top surface of the lower sliding block, the upper sliding block is slidably connected in the rectangular groove, and the outer wall of the upper sliding block abuts against the inner wall of the rectangular groove.

[0015] As a further description of the above technical solution:

[0016] The diameter of the positioning column is the same as the diameter of the positioning hole.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0018] 1. In the utility model, a sinking groove and an avoidance groove are provided on the base to avoid interference with the concave and convex surfaces of the special-shaped casting, the flange part of the special-shaped casting is placed on the top surface of the base, the flange hole is aligned with any positioning hole, and the locking mechanism on the base is randomly slid to the flange hole. The locking mechanism passes through the flange hole and the positioning hole to quickly fix the special-shaped casting and the base, so that the clamping operation is simple and convenient, and the clamping effect is good.

[0019] 2. In the utility model, the screw rod is driven to rotate by the driving motor. As the upper slider slides along the lower slider, the screw connection between the screw rod and the lower slider is converted into the upper slider sliding along the lower slider, so that the positioning column is inserted into the positioning hole after being inserted into the flange hole of the special-shaped casting, thereby realizing fast and accurate positioning of the special-shaped casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a special-shaped casting quick positioning fixture for hydraulic cylinder production.

[0021] Figure 2 This is a cross-sectional view of a special-shaped casting quick positioning fixture used in the production of hydraulic cylinders.

[0022] Figure 3 for Figure 2 Reference diagram for usage status.

[0023] Legend:

[0024] 1. Base; 2. Sinking groove; 3. Avoiding groove; 4. Positioning hole; 5. Bottom plate; 6. Locking mechanism; 61. Lower slider; 62. Upper slider; 63. Driving motor; 64. Screw rod; 7. Lower bending end; 8. Upper bending end; 9. Positioning column; 10. Slide groove; 11. Rectangular groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-3 The utility model provides a technical solution: a special-shaped casting rapid positioning fixture for hydraulic cylinder production, comprising:

[0027] The base 1 is cylindrical, and a sinking groove 2 and an air-avoiding groove 3 are provided on the top surface of the base 1. The air-avoiding groove 3 communicates with the sinking groove 2 and the outer wall of the base 1. The top surface of the base 1 is provided with a plurality of positioning holes 4 arranged in a circular array;

[0028] A bottom plate 5, which is fixedly connected to the bottom surface of the base 1;

[0029] A plurality of locking mechanisms 6 are slidably connected to the base 1, and the plurality of locking mechanisms 6 extend to the top of the base 1;

[0030] The locking mechanism 6 includes a lower slider 61, an upper slider 62, a driving motor 63 and a screw rod 64. The lower bent end 7 of the lower slider 61 is slidably connected to the base 1. The upper slider 62 is slidably connected to the lower slider 61. The screw rod 64 passes through the upper slider 62 and is screwed to the lower slider 61. The driving motor 63 is installed on the upper slider 62, and the driving motor 63 is connected to and drives the screw rod 64. The upper bent end 8 of the upper slider 62 is provided with a positioning column 9. The positioning column 9 is aligned with any of the positioning holes 4. The driving motor 63 rotates to drive the screw rod 64 to rotate. Since the upper slider 62 slides along the lower slider 61, the screw connection between the screw rod 64 and the lower slider 61 is converted into the upper slider 62 sliding along the lower slider 61, so that the positioning column 9 is inserted into the flange hole of the special-shaped casting and then inserted into the positioning hole 4, thereby realizing fast and accurate positioning of the special-shaped casting.

[0031] A slide groove 10 is provided on the bottom surface of the base 1, and the lower bent end 7 is slidably connected in the slide groove 10, which has a guiding effect on the sliding of the lower slider 61 along the base 1;

[0032] A rectangular groove 11 is formed on the top surface of the lower slider 61, and the upper slider 62 is slidably connected in the rectangular groove 11, and the outer wall of the upper slider 62 abuts against the inner wall of the rectangular groove 11, so as to ensure that the upper slider 62 slides smoothly;

[0033] The diameter of the positioning column 9 is the same as the diameter of the positioning hole 4, so the positioning effect is good.

[0034] Working principle: First, a sinking groove 2 and an avoidance groove 3 are opened on the base 1 to avoid interference with the concave and convex surfaces of the special-shaped casting. The flange part of the special-shaped casting is placed on the top surface of the base 1, and the flange hole is aligned with any positioning hole 4. Secondly, the locking mechanism 6 on the base 1 is randomly slid to the flange hole. At this time, the lower bending end 7 slides along the slide groove 10, and the switch is used to control the drive motor 63. The drive motor 63 can be connected to the servo controller to control the speed and forward and reverse rotation. The drive motor 63 rotates to drive the screw rod 64 to rotate. Since the upper slider 62 slides along the lower slider 61, that is, the upper slider 62 slides in the rectangular groove 11, the screw connection between the screw rod 64 and the lower slider 61 is converted into the upper slider 62 sliding along the lower slider 61, so that the positioning column 9 is inserted into the flange hole of the special-shaped casting and then inserted into the positioning hole 4, so as to realize the fast and accurate positioning of the special-shaped casting. Finally, the special-shaped casting is subjected to drilling, tapping and other processing.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fast positioning fixture for special-shaped castings used in the production of hydraulic cylinders, characterized by: include: A base (1) is cylindrical, the top surface of the base (1) is provided with a sinking groove (2) and a void-avoiding groove (3), the void-avoiding groove (3) is connected to the sinking groove (2) and the outer wall of the base (1), and the top surface of the base (1) is provided with a plurality of positioning holes (4) arranged in a circular array; A bottom plate (5) fixedly connected to the bottom surface of the base (1); A plurality of locking mechanisms (6) are slidably connected to the base (1), and the plurality of locking mechanisms (6) extend above the base (1).

2. A special-shaped casting quick positioning fixture for hydraulic cylinder production according to claim 1, characterized in that: The locking mechanism (6) comprises a lower slider (61), an upper slider (62), a driving motor (63) and a screw rod (64); the lower bent end (7) of the lower slider (61) is slidably connected to the base (1); the upper slider (62) is slidably connected inside the lower slider (61); the screw rod (64) passes through the upper slider (62) and is screwed to the lower slider (61); the driving motor (63) is mounted on the upper slider (62), and the driving motor (63) is connected to and drives the screw rod (64); the upper bent end (8) of the upper slider (62) is provided with a positioning column (9), and the positioning column (9) is aligned with any of the positioning holes (4).

3. A special-shaped casting quick positioning fixture for hydraulic cylinder production according to claim 2, characterized in that: A slide groove (10) is provided on the bottom surface of the base (1), and the lower bent end (7) is slidably connected in the slide groove (10).

4. A special-shaped casting quick positioning fixture for hydraulic cylinder production according to claim 3, characterized in that: A rectangular groove (11) is formed on the top surface of the lower sliding block (61), the upper sliding block (62) is slidably connected in the rectangular groove (11), and the outer wall of the upper sliding block (62) abuts against the inner wall of the rectangular groove (11).

5. A special-shaped casting quick positioning fixture for hydraulic cylinder production according to claim 4, characterized in that: The diameter of the positioning column (9) is the same as the diameter of the positioning hole (4).

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