High-precision hydraulic clamp capable of automatically aligning centers of two surfaces

Abstract

The utility model discloses a high-precision hydraulic clamp capable of automatically aligning centers of two surfaces, which is high in alignment center reference position accuracy and capable of automatically aligning the center reference positions of the two surfaces of a part. The clamp comprises a flange, two rib plates which are installed in parallel are arranged on one side of the flange, clamping grooves are formed in the middles of plate bodies of the two rib plates, a bottom plate is installed in the clamping grooves in a clamped mode to be connected with the two rib plates, and a clamping mechanism and a pressing mechanism are arranged on the surface of the bottom plate.

Description

Technical Field

[0001] The utility model relates to the technical field of symmetrical part fixtures, in particular to a high-precision hydraulic fixture that automatically aligns the centers of two surfaces. Background Art

[0002] For some symmetrical parts, the reference plane is the central symmetry plane of the two casting structural surfaces. Since there will be uncontrollable deformation in the casting process, there will be a large dispersion in the distance dimensions between the casting surfaces of such parts. Traditional fixtures use single side positioning, and the positions of the symmetry plane and the positioning surface in the center of the two surfaces will fluctuate, and the accuracy of aligning the center reference position of the part is low. Utility Model Content

[0003] Aiming at the shortcoming of low accuracy of traditional clamps in aligning the center reference position of parts, the utility model provides a high-precision hydraulic clamp for automatically aligning the centers of two surfaces, which has high accuracy in aligning the center reference position and can automatically align the center reference positions of two surfaces of parts.

[0004] The utility model provides the following technical solution: a high-precision hydraulic automatic two-surface center alignment fixture, comprising a flange, two rib plates installed in parallel are arranged on one side of the flange, and the characteristic is that: the middle parts of the two rib plates are provided with a slot, the bottom plate is clamped in the slot to connect the two rib plates, and the surface of the bottom plate is provided with a clamping mechanism and a clamping mechanism.

[0005] It is further characterized by:

[0006] The clamping mechanism comprises a centering vise, wherein two movable jaws are installed inside the centering vise body, and clamping blocks are installed on the upper surfaces of the two movable jaws;

[0007] The clamping mechanism comprises a pressing plate, a polyurethane pressing block is installed at one end of the bottom surface of the pressing plate, and the other end is fixedly connected to the head of the piston rod extending from the hydraulic angle cylinder;

[0008] Two sealing plugs are installed on the upper surface of the flange, and the other side of the flange is fixedly connected to a four-way oil pipe;

[0009] The bottom surfaces of the two rib plates are both provided with a slot, and the reinforcing ribs are clamped in the slot to fix the two rib plates;

[0010] The lower table of the centering vise is provided with a first positioning block, and the upper table of the centering vise is provided with a second positioning block, and the first positioning block and the second positioning block are fixedly connected to the centering vise;

[0011] A speed regulating valve is installed on the right side of the centering vise;

[0012] The upper and lower surfaces of the centering bench vise are tightly fitted with a single support seat and a support seat, and the single support seat and the support seat surface are both provided with a certain number of support pins, the support pins are distributed in a triangular shape, and the support pin bases are all installed with circular adjustment gaskets;

[0013] A cylinder pad is provided between the hydraulic angle cylinder and the cylinder base.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] The first positioning block and the second positioning block can be used to initially fix the part inside, and the movement of the part can be restricted in a large range. The pressure plate on the press mechanism drives the polyurethane pressure block to move and further press the part. The polyurethane pressure block has a certain elasticity and will not crush the part. Then the centering vise on the clamping mechanism will finally fix the part and align the center reference of the two sides of the part. The sealing plug is used to increase the sealing of the flange. The four-way oil pipe has strong stability and sealing, which can provide good guarantee for the work of subsequent components. The reinforcing rib increases the bearing capacity of the overall plate and provides higher stability for each mechanism. The speed regulating valve can adjust the running speed of the movable jaw of the centering vise, thereby driving the clamping block on the movable jaw to stably clamp the part. The adjusting gasket can improve the contact surface quality of the support pin and the base. The support pin can provide a stable supporting force for the part. The cylinder pad can reduce the pressure on the hydraulic angle cylinder, reduce the vibration and impact force of the cylinder, and improve the guarantee for its stable work. The fixture can achieve high-precision positioning of the center reference surface for parts with reference surfaces as two central symmetrical surfaces with large spacing dispersion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the clamp of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the clamping mechanism and the pressing mechanism of the utility model;

[0018] Figure 3 This is a front view of the clamping mechanism and the pressing mechanism structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the centring bench vise structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the positioning block structure of the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the hydraulic angle cylinder of the utility model;

[0022] Figure 7 It is a schematic diagram of the structure of a sample part of the utility model.

[0023] Description of reference numerals:

[0024] 1. Reinforcement ribs; 2. Flange; 3. Rib plate; 4. Bottom plate; 5. Support seat; 6. Adjustment gasket; 7. Support pin; 8. Pressure plate; 9. Polyurethane pressure block; 10. Hydraulic angle cylinder; 11. Cylinder gasket; 12. First positioning block; 13. Second positioning block; 14. Sealing plug; 15. Four-way oil pipe; 16. Speed ​​regulating valve; 17. Clamping block; 18. Centering vise. DETAILED DESCRIPTION

[0025] The utility model will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model provides Figure 1-Figure 7 The high-precision hydraulic automatic two-side centering fixture shown in the figure comprises a flange 2, two rib plates 3 are arranged on one side of the flange 2, and the middle parts of the two rib plates 3 are provided with a slot, and the bottom plate 4 is clamped in the slot to connect the two rib plates 3 (see Figure 3 ), a clamping mechanism and a pressing mechanism are arranged on the surface of the bottom plate 4.

[0027] In this embodiment, the clamping mechanism includes a centering vise 18, and two movable jaws are installed inside the centering vise 18. The upper surfaces of the two movable jaws are both equipped with clamping blocks 17 (see FIG. Figure 4 ), the clamping mechanism includes a pressing plate 8, a polyurethane pressing block 9 is installed at one end of the bottom surface of the pressing plate 8, and the other end is fixedly connected to the head of the piston rod extending from the oil pressure angle cylinder 10 (see Figure 6 ), two sealing plugs 14 are installed on the upper surface of flange 2, and the other side of flange 2 is fixedly connected to a four-way oil pipe 15 (see Figure 1 ), the bottom surfaces of the two rib plates 3 are provided with a slot, the reinforcing rib 1 is clamped in the slot to fix the two rib plates 3, the lower surface of the centering vise 18 is provided with a first positioning block 12, the upper surface of the centering vise 18 is provided with a second positioning block 12, the first positioning block 12 and the second positioning block 13 are fixedly connected to the centering vise 18 (see Figure 5 ), a speed regulating valve 16 is installed on the right side of the centering vise 18 (see Figure 3 ), the speed regulating valve 16 can control the movable jaw by controlling the flow of the fluid, the upper and lower surfaces of the centering bench vise 18 are tightly fitted with a single support seat and a support seat 5, and the single support seat and the support seat 5 are both provided with a certain number of support pins 7, and the support pins 7 are distributed in a triangular shape, Figure 1 In the figure, the base of the support pin 7 is installed with a circular adjustment gasket 6, which can accurately adjust the gap between the support pin 7 and the support pin base. A cylinder pad 11 is provided between the hydraulic angle cylinder 10 and the cylinder base, and the cylinder pad 11 can relieve the pressure generated when the hydraulic angle cylinder 10 is working.

[0028] Working principle of this utility model:

[0029] Refer to the instruction manual Figure 1-Figure 7 When using the utility model, the first positioning block 12 and the second positioning block 13 can be used to preliminarily fix the part inside, and the movement of the part can be restricted in a large range. The pressing plate 8 on the press mechanism drives the polyurethane pressing block 9 to move to further press the part. The polyurethane pressing block 9 has a certain elasticity and will not crush the part. The speed regulating valve 16 regulates the running speed of the movable jaws of the centering vise 18, thereby driving the clamping block 17 on the movable jaws to stably clamp the part. The centering vise 18 on the clamping mechanism will finally fix the part and align the center reference of the two sides of the part. The sealing wire plug 14 is used to increase the sealing of the flange. The four-way oil pipe 15 has strong stability and sealing, which can provide good guarantee for the work of subsequent components. The reinforcing rib 1 increases the bearing capacity of the overall plate and provides higher stability for each mechanism. This fixture can achieve high-precision positioning of the center reference surface for parts with two central symmetrical surfaces with large spacing dispersion on the reference surface.

Claims

1. A high-precision hydraulic automatic two-side centering fixture, comprising a flange (2), one side of the flange (2) being provided with two rib plates (3) installed in parallel, characterized in that: The middle parts of the two rib plates (3) are each provided with a slot, the bottom plate (4) is mounted in the slot to connect the two rib plates (3), and a clamping mechanism and a pressing mechanism are provided on the surface of the bottom plate (4).

2. A high-precision hydraulic automatic two-surface centering fixture according to claim 1, characterized in that: The clamping mechanism comprises a centering bench vise (18), wherein two movable jaws are installed inside a body of the centering bench vise (18), and clamping blocks (17) are installed on the upper surfaces of the two movable jaws.

3. A high-precision hydraulic automatic two-surface centering fixture according to claim 2, characterized in that: The clamping mechanism comprises a pressing plate (8), one end of the bottom surface of which is mounted a polyurethane pressing block (9), and the other end of which is fixedly connected to the head of a piston rod extending from a hydraulic angle cylinder (10).

4. A high-precision hydraulic automatic two-surface centering fixture according to claim 3, characterized in that: Two sealing plugs (14) are installed on the upper surface of the flange (2), and the other side of the flange (2) is fixedly connected to a four-way oil pipe (15).

5. A high-precision hydraulic automatic two-surface centering fixture according to claim 4, characterized in that: The bottom surfaces of the two rib plates (3) are both provided with a slot, and the reinforcing rib (1) is mounted in the slot to fixedly connect the two rib plates (3).

6. A high-precision hydraulic automatic two-surface centering fixture according to claim 5, characterized in that: The lower surface of the centering vise (18) is provided with a first positioning block (12), and the upper surface of the centering vise (18) is provided with a second positioning block (13), and the first positioning block (12) and the second positioning block (13) are fixedly connected to the centering vise (18).

7. A high-precision hydraulic automatic two-surface centering fixture according to claim 6, characterized in that: A speed regulating valve (16) is installed on the right side of the centering vise (18).

8. The high-precision hydraulic automatic two-surface centering fixture according to claim 7, characterized in that: The upper and lower surfaces of the centering bench vise (18) are tightly fitted with a single support seat and a support seat (5), and the surfaces of the single support seat and the support seat (5) are both provided with a certain number of support pins (7), the support pins (7) are distributed in a triangular shape, and the bases of the support pins (7) are both installed with circular adjustment gaskets (6).

9. A high-precision hydraulic automatic two-surface centering fixture according to claim 8, characterized in that: A cylinder pad (11) is provided between the hydraulic angle cylinder (10) and the cylinder base.

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