A clamping and positioning device for testing the cover of a brake booster unit

Abstract

This utility model discloses a clamping and positioning device for testing the cover of a brake booster unit, including pads, a base, a positioning block, and a clamping mechanism. A vertical base is mounted on the two pads, and a horizontally positioned positioning block is mounted on the top of the base. The positioning block is equipped with a clamping mechanism for quickly positioning, clamping, and correcting sheet-shaped injection molded products. The clamping mechanism includes a fixing plate, a pressure plate, pins, positioning pins, and bolts. The fixing plate has a clearance groove on its side to avoid the convex surface of the product. A pressure plate is quickly positioned on the side of the fixing plate. The pressure plate has a measurement window designed according to the product's shape, and the inner wall of the measurement window has several clamping blocks for securing the product. The fixing plate has several measurement holes or openings reserved for testing the dimensions of key areas of the product. Through the above methods, this utility model ensures that the product can be tested for key dimensions in a stable state through clamping correction and precise positioning.

Description

Technical Field

[0001] This utility model relates to the field of testing technology, and in particular to a clamping and positioning device for testing the cover of a brake booster unit. Background Technology

[0002] Brake booster unit cover such as Figure 1 As shown, this is a sheet injection molded product. After the product is formed, it needs to be inspected for appearance. Sheet injection molded products are prone to deformation and warping in a free state. If the product is inspected in a free state, there will be measurement error problems, especially the inability to measure the key dimensions of the product.

[0003] Based on the above defects and shortcomings, it is necessary to improve the existing technology and design a clamping and positioning device for detecting the cover of the brake booster unit. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a clamping and positioning device for testing the cover of a brake booster unit. Through clamping correction and precise positioning, it ensures that the product is tested for key dimensions in a stable state, and guarantees the repeatability and accuracy of subsequent measurement results.

[0005] To solve the above-mentioned technical problems, the present invention provides a clamping and positioning device for detecting the cover of a brake booster unit. This device includes feet, a base, a positioning block, and a clamping mechanism. A vertical base is mounted on the two feet, and a horizontally positioned positioning block is mounted on the top of the base. The positioning block is equipped with a clamping mechanism for quickly positioning, clamping, and correcting sheet-like injection-molded products. The clamping mechanism includes a fixing plate, a pressure plate, pins, positioning pins, and bolts. The fixing plate has a clearance groove on its side to avoid the convex surface of the product. A pressure plate is quickly positioned on the side of the fixing plate. A measuring window designed according to the product's shape is provided on the pressure plate. Several clamping blocks for clamping the product are provided on the inner wall of the measuring window. Several measuring holes or openings are reserved on the fixing plate for detecting the dimensions of key areas of the product. The positioning fixing plate is secured to the base by fixing screws.

[0006] Preferably, the lower end of the fixing plate and the pressure plate is provided with a positioning surface that cooperates with the positioning block, and the positioning block serves as a reference surface in the Z direction.

[0007] Preferably, the clamping mechanism further includes pins and positioning pins. Several pins that contact the outer edge of the product are installed on the fixing plate around the clearance groove. At least two positioning pins are installed on the fixing plate, and positioning holes that cooperate with the positioning pins are provided on the pressure plate.

[0008] Preferably, the clamping mechanism further includes bolts, and the fixing plate and the pressure plate are provided with corresponding bolt holes. The fixing plate and the pressure plate are locked together by bolts, and the bolt locking pressure can be adjusted.

[0009] Preferably, the fixing plate and the pressure plate are made of hardened steel, and the surfaces of the fixing plate and the pressure plate are polished.

[0010] Preferably, the pad has a slot for placing the base, a first mounting hole for locking the base at the bottom of the slot, and a second mounting hole for mounting it to the workbench.

[0011] Compared with the prior art, the beneficial effects of this utility model are: Correction function: By applying uniform pressure (adjustable) through bolts, slight deformation of the product is corrected so that it reaches the theoretical state shown in the drawings. The clamping force can eliminate warping caused by internal stress or uneven cooling, making the measured value closer to the design value. Quick clamping: The positioning block + positioning pin design enables quick positioning and clamping, with a single clamping time of ≤5 seconds; Consistency: The design of the clamping and positioning device for repeatability can cover products with different tolerances. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a sheet injection molded product.

[0013] Figure 2 This is a schematic diagram of a clamping and positioning device for detecting the cover of a brake booster unit.

[0014] Figure 3 This is a schematic diagram of another perspective of a clamping and positioning device for detecting the cover of a brake booster unit.

[0015] Figure 4 This is a partial cross-sectional view of a clamping and positioning device for detecting the cover of a brake booster unit.

[0016] Figure 5 This is a schematic diagram of the fixing plate structure of a clamping and positioning device for testing the cover of a brake booster unit.

[0017] Figure 6 This is a schematic diagram of the pressure plate structure of a clamping and positioning device for testing the cover of a brake booster unit.

[0018] Among them, 1. pad, 11. slot, 12. first mounting hole, 13. second mounting hole, 2. base, 3. positioning block, 4. fixing plate, 40. clearance groove, 41. measuring hole or measuring opening, 5. pressure plate, 50. measuring window, 51. locking block, 52. positioning hole, 6. pin, 7. positioning pin, 8. bolt. Detailed Implementation

[0019] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0020] Please see Figures 1 to 6 The embodiments of this utility model include: A clamping and positioning device for testing the cover of a brake booster unit includes a pad 1, a base 2, a positioning block 3, a fixing plate 4, a pressure plate 5, a pin 6, a positioning pin 7, and a bolt 8.

[0021] Vertical bases 2 are installed on two feet 1. A horizontally positioned positioning block 3 is installed on the top of the base 2. A fixing plate 4 is installed on the positioning block 3. The side of the fixing plate 4 has a relief groove 40 to avoid the convex surface of the sheet-shaped injection molded product. The relief groove 40 is designed to conform to the shape of the sheet-shaped injection molded product. A pressure plate 5 is quickly positioned on the side of the fixing plate 4. The pressure plate 5 has a measurement window 50 designed to conform to the shape of the sheet-shaped injection molded product. Several clamping blocks 51 for clamping the product are provided on the inner wall of the measurement window 50. Several measurement holes or measurement openings 41 are reserved on the fixing plate 4 for measuring the dimensions of key areas of the product, so that probes such as micrometers and optical measuring instruments can contact key dimension areas (such as thickness, hole diameter, etc.). The lower end of the fixing plate 4 and the pressure plate 5 has a positioning surface that cooperates with the positioning block 3. The positioning block 3 serves as a reference surface to achieve rapid positioning of the fixing plate 4 and the pressure plate 5 in the Z direction. The positioning fixing plate 4 is fastened to the base 2 by fixing screws.

[0022] Several pins 6 are installed on the fixing plate 4 around the clearance groove 40. When the sheet injection molded product is placed on the fixing plate 4, the pins 6 contact the outer edge of the sheet injection molded product to quickly position the product. At least two positioning pins 7 are installed on the fixing plate 4, and the pressure plate 5 is provided with positioning holes 52 that cooperate with the positioning pins 7. The design of the positioning pins 7 and positioning holes 52 enables the fixing plate 4 and the pressure plate 5 to be quickly positioned in the X and Y directions with a repeatability accuracy within 0.02mm. The fixing plate 4 and the pressure plate 5 are also provided with corresponding bolt holes. The fixing plate 4 and the pressure plate 5 are locked and fixed by bolts 8. Uniform clamping pressure is applied by bolts 8. The clamping pressure is adjustable to correct slight deformation of the product and make it reach the theoretical state of the drawing.

[0023] The fixing plate 4 and the pressure plate 5 are made of hardened steel, and the surfaces of the fixing plate 4 and the pressure plate 5 are polished to avoid scratching the product.

[0024] The fixing plate 4, pressure plate 5, pin 6, positioning pin 7 and bolt 8 form a clamping mechanism for quick positioning, clamping and straightening of sheet injection molded products.

[0025] The pad 1 has a slot 11 for placing the base 2. The bottom of the slot 11 has a first mounting hole 12 for locking the base 2. The pad 1 also has a second mounting hole 13 for mounting it to the workbench.

[0026] When the clamping and positioning device for testing the cover of the brake booster unit of this utility model is working, the sheet-shaped injection molded product is placed on the fixed plate 4, with the convex surface of the product aligned with the avoidance groove 40. The pin 6 surrounds the outer edge of the sheet-shaped injection molded product. Through the cooperation of the positioning pin 7 and the positioning hole 52, the pressure plate 5 is quickly positioned on the fixed plate 4. The locking bolt 8 is tightened. The constant locking force ensures that the product is at the same level each time it is clamped. The clamping block 51 presses down on the product around its perimeter. The probes such as micrometers and optical measuring instruments are used to contact the key dimension areas of the product through the measuring window to collect data (such as thickness, hole diameter, etc.) and avoid interference from the fixture structure.

[0027] This utility model discloses a clamping and positioning device for testing the cover of a brake booster unit. Through clamping correction and precise positioning, it ensures that the product is tested for key dimensions in a stable state, thus guaranteeing the repeatability and accuracy of subsequent measurement results.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A clamping positioning device for brake booster unit cover detection, characterized in that: The device includes feet, a base, positioning blocks, and a clamping mechanism. A vertical base is mounted on each of the two feet, and a horizontally positioned positioning block is mounted on the top of the base. The positioning block has a clamping mechanism for quickly positioning, clamping, and correcting sheet-shaped injection molded products. The clamping mechanism includes a fixing plate, a pressure plate, pins, positioning pins, and bolts. The fixing plate has a clearance groove on its side to avoid the convex surface of the product. A pressure plate is quickly positioned on the side of the fixing plate. The pressure plate has a measurement window designed according to the product's shape. Several clamping blocks are provided on the inner wall of the measurement window for clamping the product. Several measurement holes or openings are reserved on the fixing plate for detecting the dimensions of key areas of the product. The positioning and fixing plate is secured to the base with fixing screws.

2. The clamping and positioning device for detecting the cover of a brake assist unit according to claim 1, characterized in that: The lower ends of the fixing plate and the pressure plate are provided with positioning surfaces that cooperate with the positioning block, and the positioning block serves as a reference surface in the Z direction.

3. The clamping and positioning device for detecting the cover of brake assist unit according to claim 1, characterized in that: The clamping mechanism also includes pins and positioning pins. Several pins that contact the outer edge of the product are installed on the fixing plate around the clearance groove. At least two positioning pins are installed on the fixing plate, and positioning holes that cooperate with the positioning pins are provided on the pressure plate.

4. The clamping and positioning device for detecting the cover of brake assist unit according to claim 1, characterized in that: The clamping mechanism also includes bolts, and the fixing plate and the pressure plate are provided with corresponding bolt holes. The fixing plate and the pressure plate are locked together by bolts, and the bolt locking pressure can be adjusted.

5. The clamping and positioning device for detecting the cover of brake assist unit according to claim 1, characterized in that: The fixing plate and pressure plate are made of hardened steel, and the surfaces of the fixing plate and pressure plate are polished.

6. The clamping and positioning device for detecting the cover of brake assist unit according to claim 1, characterized in that: The pad has a slot for placing the base, and a first mounting hole for locking the base is provided at the bottom of the slot. The pad also has a second mounting hole for mounting it to the workbench.

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