Adjustable air chamber support polishing clamp

Abstract

The utility model provides an adjustable polishing clamp for an air chamber support. The adjustable polishing clamp comprises a base, a moving block movably embedded in the top face of the base and a clamping plate installed on the moving block. A plurality of parallel transverse through grooves and a plurality of longitudinal through grooves perpendicular to and parallel to the transverse through grooves are formed in the top face of the base. The moving block can be axially inserted into the transverse through groove or the longitudinal through groove, opening plates are movably embedded in the two sides of the moving block, an opening mechanism is further arranged in the moving block, and the opening plates can be opened towards the inner wall of the transverse through groove or the inner wall of the longitudinal through groove on the two sides relative to the moving block by triggering the opening mechanism, so that the moving block is locked; the clamping plate is perpendicular to the top face of the base, a positioning column for positioning a workpiece is detachably arranged on the clamping plate, and stabilizing mechanisms are arranged on the two sides of the bottom of the clamping plate and support the clamping plate in the direction parallel to the stress direction of the clamping plate. Free adjustment is achieved through the through groove and the movable block, positioning is ensured in combination with the opening mechanism, and meanwhile positioning and supporting are achieved through the positioning column and the wedge-shaped supporting foot.

Description

Technical Field

[0001] This utility model relates to the field of air chamber production, and in particular to an adjustable air chamber support grinding fixture. Background Technology

[0002] In vehicle braking or air suspension systems, air chambers (such as brake chambers and air spring chambers) are critical components, and the machining accuracy of their internal cavities and connecting end faces directly affects sealing performance and durability. To ensure the fitting accuracy between the air chamber and related components, its inner wall, flange end face, or welded interface must be finely ground to eliminate burrs, improve surface finish, and ensure dimensional consistency.

[0003] However, the current process of grinding air chambers presents the following problems: air chamber grinding mainly relies on general-purpose fixtures or manual hand-held fixation, which has the following issues: the dimensions of different models of air chambers vary significantly, and traditional fixtures require repeated replacement of positioning components or remanufacturing of positioning components, affecting the production efficiency of multiple product categories.

[0004] Therefore, with the trend of vehicle lightweighting leading to more complex air chamber structures, there is an urgent need for a special grinding fixture that can adapt to different contours, provide stable clamping, and has surface protection functions. Utility Model Content

[0005] To address the issue that traditional fixtures require repeated replacement of positioning components or remanufacturing of the positioning components due to significant differences in the size of air chambers of different models, thus affecting the production efficiency of multiple product categories, this utility model proposes an adjustable air chamber support grinding fixture, the technical solution of which is as follows.

[0006] An adjustable air chamber support grinding fixture includes a base, a movable block movably embedded in the top surface of the base, and a clamping plate installed on the movable block.

[0007] The top surface of the base is provided with several parallel transverse through slots and several longitudinal through slots that are perpendicular to and parallel to the transverse through slots.

[0008] The movable block can be axially slidably inserted into the transverse through groove or the longitudinal through groove, and the movable block is movably embedded with a support plate on both sides. The movable block is also provided with a support mechanism. Triggering the support mechanism can cause the support plate to be supported relative to the movable block towards the inner wall of the transverse through groove or the inner wall of the longitudinal through groove on both sides, thereby locking the movable block.

[0009] The clamping plate is perpendicular to the top surface of the base, and a positioning post for positioning the workpiece is detachably provided on the clamping plate. A stabilizing mechanism is provided on both sides of the bottom of the clamping plate, which provides stable support to the clamping plate in the direction of force parallel to the clamping plate.

[0010] Furthermore, the transverse through groove and the longitudinal through groove have the same axial cross section and are both dovetail grooves. The axial cross section of the moving block is a dovetail shape that matches the cross sections of the transverse through groove and the longitudinal through groove. The outer wall of the moving block and the inner walls on both sides of the transverse through groove and the longitudinal through groove are provided with a margin of movement.

[0011] Furthermore, the transverse through grooves and the longitudinal through grooves are respectively parallel and equidistantly opened on the top surface of the base, and the spacing between the transverse through grooves is equal to the spacing between the longitudinal through grooves.

[0012] Furthermore, the movable blocks are arranged in pairs, with each pair of movable blocks being slidably inserted into two adjacent transverse through slots or two adjacent longitudinal through slots, and the bottom of the clamping plate is simultaneously supported on the top surface of the pair of movable blocks.

[0013] Furthermore, the spreading mechanism includes a V-shaped movable through hole opened in the movable block, and the axes at both ends of the movable through hole are perpendicular to the inner walls of the transverse or longitudinal through grooves on both sides of the movable block. A pair of movable blocks are symmetrically arranged on both sides inside the movable through hole, and a pressing block is arranged between the pair of movable blocks. The pressing block is slidably connected to the movable blocks on both sides of the pressing block, and the pressing block transmits force to the movable blocks through the inclined surfaces on both sides. A bolt is vertically screwed on the top surface of the movable block, and an adjustment chamber is provided in the movable block, so that the pressing block can move up and down relative to the top surface of the movable block in the adjustment chamber. The bolt passes through the movable block and extends into the adjustment chamber to be rotatably connected to the pressing block. Tightening the bolt can make the pressing block move downward, thereby pressing the movable blocks on both sides of the pressing block to move out of the movable through hole. Tightening the bolt in the opposite direction can make the pressing block move upward, thereby moving the two movable blocks of the pressing block into the movable through hole, so that the movable block is close to the inner wall of the transverse or longitudinal through groove, thereby making the spreading plate tightly abut against the inner wall of the transverse or longitudinal through groove.

[0014] Furthermore, the left and right sidewalls of the extrusion block are symmetrical, and each sidewall is machined with an inverted trapezoidal guide groove. The side of the movable block facing the extrusion block is provided with a guide protrusion that cooperates with the guide groove.

[0015] Furthermore, the support plate is installed on the side of the movable block near the inner wall of the transverse or longitudinal through groove, and the contact surface between the support plate and the transverse or longitudinal through groove is provided with an anti-slip pad.

[0016] Furthermore, the stabilizing mechanism is a support foot, which is perpendicular to the clamping plate and extends from the side of the clamping plate near the top surface of the base to both sides of the clamping plate. The support foot has a wedge-shaped structure, and the bottom of the support foot is in contact with the top surface of the base.

[0017] Furthermore, the positioning post is detachably connected to the clamping plate through a threaded structure at its bottom, and the top surface of the positioning post is provided with a spherical contact surface, the surface of which is covered with an elastic buffer layer.

[0018] This utility model has the following beneficial effects: By setting a base with dovetail grooves and transverse and longitudinal through grooves, and a sliding moving block that can be quickly locked by a spreading mechanism, combined with a detachable positioning column on the clamping plate and a bottom adaptive support structure, this technology enables a single clamp to adapt to the stepless adjustment of multiple models of air chamber sizes. It fundamentally solves the problems of traditional clamps relying on manual fixing and requiring frequent replacement or customization of positioning components. It achieves the comprehensive benefits of quick switching of positioning, tool-free adjustment, and clamping stability when grinding multiple types of air chambers, significantly improving production efficiency. Attached Figure Description

[0019] Appendix Figure 1 This is a top view of the entire utility model;

[0020] Appendix Figure 2 This is a schematic diagram of the overall installation of this utility model;

[0021] Appendix Figure 3 This is a schematic diagram of the installation of the movable block in this utility model;

[0022] Appendix Figure 4 This is a side view of the clamping plate of this utility model;

[0023] Appendix Figure 5 This is a schematic diagram showing the connection relationship between the movable block and the extrusion block of this utility model.

[0024] In the above-mentioned attached figures: 1. base, 2. movable block, 3. clamping plate, 4. transverse through groove, 5. longitudinal through groove, 6. support plate, 7. movable through hole, 8. movable block, 9. extrusion block, 10. guide groove, 11. guide protrusion, 12. anti-slip pad, 13. support foot, 14. positioning post, 15. spherical contact surface, 16. elastic buffer layer, 17. adjustment chamber, 18. bolt. Detailed Implementation

[0025] like Figure 1 , Figure 2 , Figure 3 As shown, an adjustable air chamber support grinding fixture includes a base 1, a movable block 2 movably embedded in the top surface of the base 1, and a clamping plate 3 mounted on the movable block 2. The top surface of the base 1 has several parallel transverse through slots 4 and several longitudinal through slots 5 perpendicular to and parallel to the transverse through slots 4. The movable block 2 can be axially slidably inserted into the transverse through slots 4 or the longitudinal through slots 5, and the movable block 2 has a supporting plate 6 movably embedded on both sides. The movable block 2 is also provided with a supporting mechanism. Triggering the supporting mechanism can cause the supporting plate 6 to be opened relative to the movable block 2 towards the inner wall of the transverse through slots 4 or the inner wall of the longitudinal through slots 5 on both sides, thereby locking the movable block 2. The clamping plate 3 is perpendicular to the top surface of the base 1, and the clamping plate 3 is detachably provided with a positioning post 14 for positioning the workpiece. The bottom sides of the clamping plate 3 are provided with stabilizing mechanisms, which provide stable support to the clamping plate 3 in a force direction parallel to the clamping plate 3.

[0026] like Figure 1 , Figure 2 As shown, preferably, the transverse through-slot 4 and the longitudinal through-slot 5 have the same axial cross-section and are both dovetail grooves. The axial cross-section of the moving block 2 is a dovetail shape matching the cross-sections of the transverse through-slot 4 and the longitudinal through-slot 5. Furthermore, the outer wall of the moving block 2 has a margin of movement with the inner walls of both sides of the transverse through-slot 4 and the longitudinal through-slot 5. Preferably, the transverse through-slot 4 and the longitudinal through-slot 5 are respectively parallel and equidistantly formed on the top surface of the base 1, and the spacing between the transverse through-slots 4 is equal to the spacing between the longitudinal through-slots 5. The grid arrangement of the transverse through-slots 4 and the longitudinal through-slots 5, combined with the dovetail structure and margin of movement design of the moving block 2, enables the moving block 2 to be flexibly positioned with multiple degrees of freedom in the horizontal and vertical directions. Simultaneously, the mechanical limiting characteristics of the dovetail grooves prevent the moving block 2 from detaching from the base 1, thus improving stability.

[0027] like Figure 1 , Figure 2 As shown, preferably, the movable blocks 2 are arranged in pairs, with each pair of movable blocks 2 slidably inserted into two adjacent transverse through slots 4 or two adjacent longitudinal through slots 5. The bottom of the clamping plate 3 is simultaneously supported on the top surface of the pair of movable blocks 2. The design of installing the movable blocks 2 in pairs in adjacent through slots allows for easy adjustment of the spacing between the movable blocks 2 to accommodate workpieces of different sizes. At the same time, the clamping plate 3 spans multiple movable blocks 2 to distribute the load evenly and avoid local stress concentration.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, preferably, the spreading mechanism includes a V-shaped movable through hole 7 opened in the movable block 2, and the axes of the two ends of the movable through hole 7 are perpendicular to the inner walls of the transverse through groove 4 or the longitudinal through groove 5 on both sides of the movable block 2, respectively. A pair of movable blocks 8 are symmetrically arranged on both sides inside the movable through hole 7, and a pressing block 9 is arranged between the pair of movable blocks 8. The pressing block 9 is slidably connected to the movable blocks 8 on both sides of the pressing block 9, and the pressing block 9 transmits force to the movable blocks 8 through the inclined surfaces on both sides. A bolt 18 is vertically screwed on the top surface of the movable block 2, and an adjustment chamber 17 is provided in the movable block 2. The extrusion block 9 can move up and down relative to the top surface of the movable block 2 in the adjustment chamber 17. The bolt 18 extends through the movable block 2 into the adjustment chamber 17 and is rotatably connected to the extrusion block 9. Tightening the bolt 18 moves the extrusion block 9 downward, causing the movable blocks 8 on both sides of the extrusion block 9 to move outward from the movable through hole 7. Tightening the bolt 18 in the opposite direction moves the extrusion block 9 upward, causing the two movable blocks 8 of the extrusion block 9 to move inward from the movable through hole 7. This brings the movable blocks 8 closer to the inner wall of the transverse through groove 4 or the longitudinal through groove 5, thereby causing the spreading plate 6 to press tightly against the inner wall of the transverse through groove 4 or the longitudinal through groove 5. Preferably, the left and right side walls of the extrusion block 9 are symmetrical, and each side wall is machined with an inverted trapezoidal guide groove 10. The movable block 8 facing the extrusion block 9 is provided with a guide protrusion 11 that cooperates with the guide groove 10. Preferably, the support plate 6 is installed on the side of the movable block 8 near the inner wall of the transverse through groove 4 or the longitudinal through groove 5, and the contact surface between the support plate 6 and the transverse through groove 4 or the longitudinal through groove 5 is provided with an anti-slip pad 12. Through the matching structure between the inclined surface of the extrusion block 9 in the V-shaped movable through hole 7 and the guide groove 10, the bolt 18 drives the generation of symmetrical mechanical components, converting the vertically downward locking force into a horizontal expansion force, ensuring that the support plates 6 on both sides press against the groove wall synchronously. The inverted trapezoidal guide groove 10 not only increases the contact area and improves the torque transmission efficiency, but also prevents the movable block 8 from shifting and becoming unstable.

[0029] like Figure 2 , Figure 3 , Figure 4 As shown, preferably, the stabilizing mechanism is a support foot, which is perpendicular to the clamping plate 3 and extends from the side of the clamping plate 3 near the top surface of the base 1 to both sides of the clamping plate 3. The support foot 13 has a wedge-shaped structure, and the bottom of the support foot 13 is in contact with the top surface of the base 1. Preferably, the positioning post 14 is detachably connected to the clamping plate 3 through a threaded structure at its bottom, and the top surface of the positioning post 14 is provided with a spherical contact surface 15, and the contact surface is covered with an elastic buffer layer 16. The wedge-shaped support foot 13 is based on the principle of reaction force, and when the clamping plate 3 is subjected to lateral pressure from the workpiece, it is converted into horizontal support force through bottom surface contact; the coupling design of the elastic buffer layer 16 and the spherical contact surface 15 protects the workpiece surface and compensates for positioning errors through flexible contact.

[0030] Furthermore, during use, multiple clamping mechanisms consisting of moving blocks 2 and clamping plates 3 can be installed on the base 1 to clamp the air chamber.

[0031] The method of use and principle of this utility model are as follows: A pair of movable blocks 2 are inserted into the transverse or longitudinal through slots 5. After sliding to the required coordinate alignment, the bolts 18 are tightened to drive the opening mechanism, locking the movable blocks 2 in both directions, achieving rigid fixation through expansion friction. Positioning pins 14 are installed via a threaded structure. The spacing between each positioning point is adjusted according to the workpiece shape, and the support feet 13 automatically form a stable surface contact support. After the workpiece is placed on the spherical contact surface 15 of the positioning pins 14, its own weight and the elastic buffer layer 16 increase the contact area. The wedge-shaped support feet 13 generate a component force to resist deflection vibration under processing force, ensuring processing accuracy. The entire system, through the coordinated action of mechanical expansion locking, friction torque balance, and passive support mechanism, achieves high rigidity positioning characteristics while ensuring multi-directional adjustment flexibility, making it suitable for the rapid clamping requirements of complex workpieces.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An adjustable plenum support polishing fixture, characterized by: It includes a base (1), a movable block (2) movably embedded in the top surface of the base (1), and a clamping plate (3) installed on the movable block (2); The top surface of the base (1) is provided with several horizontal through grooves (4) that are parallel to each other, and several vertical through grooves (5) that are perpendicular to and parallel to each other. The movable block (2) can be axially slidably inserted into the transverse through groove (4) or the longitudinal through groove (5), and the movable block (2) is movably embedded with the support plate (6) on both sides. The movable block (2) is also provided with a support mechanism. Triggering the support mechanism can cause the support plate (6) to be pushed open relative to the movable block (2) towards the inner wall of the transverse through groove (4) or the inner wall of the longitudinal through groove (5) on both sides, thereby locking the movable block (2). The clamping plate (3) is perpendicular to the top surface of the base (1), and the clamping plate (3) is detachably provided with a positioning column (14) for positioning the workpiece. The bottom sides of the clamping plate (3) are provided with stabilizing mechanisms, which provide stable support to the clamping plate (3) in a force direction parallel to the clamping plate (3).

2. The adjustable plenum stake sander clamp of claim 1, wherein: The transverse through groove (4) and the longitudinal through groove (5) have the same axial cross section and are both dovetail grooves. The axial cross section of the moving block (2) is a dovetail shape that matches the cross sections of the transverse through groove (4) and the longitudinal through groove (5). The outer wall of the moving block (2) and the inner walls on both sides of the transverse through groove (4) and the longitudinal through groove (5) are provided with a margin of movement.

3. The adjustable plenum stake sander clamp of claim 2, wherein: The transverse through groove (4) and the longitudinal through groove (5) are respectively parallel and equidistantly opened on the top surface of the base (1), and the interval between the transverse through grooves (4) is equal to the interval between the longitudinal through grooves (5).

4. The adjustable plenum stake sander clamp of claim 3, wherein: The movable blocks (2) are in pairs. The pair of movable blocks (2) are slidably inserted into two adjacent transverse through slots (4) or two adjacent longitudinal through slots (5). The bottom of the clamping plate (3) is simultaneously mounted on the top surface of the pair of movable blocks (2).

5. The adjustable plenum stake sander clamp of claim 2, wherein: The opening mechanism includes a V-shaped movable through hole (7) opened in the movable block (2), and the axes of the two ends of the movable through hole (7) are perpendicular to the inner walls of the transverse through groove (4) or the longitudinal through groove (5) on both sides of the movable block (2). A pair of movable blocks (8) are symmetrically arranged on both sides inside the movable through hole (7), and a pressing block (9) is arranged between the pair of movable blocks (8). The pressing block (9) is slidably connected to the movable blocks (8) on both sides of the pressing block (9), and the pressing block (9) transmits force to the movable blocks (8) through the inclined surfaces on both sides. A bolt (18) is vertically screwed on the top surface of the movable block (2) through a threaded hole, and an adjustment chamber (17) is provided in the movable block (2) so that the pressing block ( 9) It can move up and down relative to the top surface of the moving block (2) in the adjustment chamber (17). The bolt (18) extends through the moving block (2) into the adjustment chamber (17) and is rotatably connected to the extrusion block (9). Tightening the bolt (18) can make the extrusion block (9) move downward, thereby causing the moving blocks (8) on both sides of the extrusion block (9) to move out of the movable through hole (7). Tightening the bolt (18) in the opposite direction will make the extrusion block (9) move upward, thereby causing the moving blocks (8) on both sides of the extrusion block (9) to move into the movable through hole (7), thereby causing the moving blocks (8) to approach the inner wall of the transverse through groove (4) or the longitudinal through groove (5), thereby causing the spreading plate (6) to press against the inner wall of the transverse through groove (4) or the longitudinal through groove (5).

6. The adjustable plenum stake sander clamp of claim 5, wherein: The extrusion block (9) has symmetrical left and right sidewalls, and each sidewall is machined with an inverted trapezoidal guide groove (10). The movable block (8) has a guide protrusion (11) that cooperates with the guide groove (10) on the side facing the extrusion block (9).

7. The adjustable plenum stake sander clamp of claim 1, wherein: The support plate (6) is installed on the side of the movable block (8) near the inner wall of the transverse through groove (4) or the longitudinal through groove (5), and the contact surface between the support plate (6) and the transverse through groove (4) or the longitudinal through groove (5) is provided with an anti-slip pad (12).

8. The adjustable plenum stake sander clamp of claim 1, wherein: The stabilizing mechanism is a support foot (13) perpendicular to the clamp plate (3), which extends from the side of the clamp plate (3) near the top surface of the base (1) to both sides of the clamp plate (3). The support foot (13) has a wedge-shaped structure, and the bottom of the support foot (13) is attached to the top surface of the base (1).

9. The adjustable plenum stake sander clamp of claim 1, wherein: The positioning post (14) is detachably connected to the clamping plate (3) through the threaded structure at its bottom, and the top surface of the positioning post (14) is provided with a spherical contact surface (15), and the contact surface is covered with an elastic buffer layer (16).

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