Anti-deformation clamp for machining thin-wall precision assembly

Abstract

The utility model relates to the technical field of machining, in particular to an anti-deformation clamp for machining a thin-wall precision component, which is characterized in that a first connecting block is fixedly arranged on a movable block, second connecting blocks are fixedly arranged on two side walls of the first connecting block, one end of a connecting rod is fixedly connected with a clamping block, and a limiting block is fixedly arranged at the other end of the connecting rod; movable rods are fixedly arranged at the positions, located between the two connecting rods, of the side wall of the clamping block, the multiple movable rods are movably sleeved with the extrusion plates correspondingly, the movable rods are movably sleeved with springs, and the two ends of the springs are fixedly connected with the clamping block and the extrusion plates correspondingly; the rotating disc is rotationally arranged in the base through the rotating shaft, a plurality of connecting rods are hinged to the annular side wall of the rotating disc in an equal-fillet mode, an electric telescopic rod is hinged to the interior of the base, the clamping force of workpieces can be adjusted according to different workpiece materials or different machining procedures, and the situation that the workpieces deform or loosen due to improper clamping is avoided.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to an anti-deformation fixture for machining thin-walled precision components. Background Technology

[0002] In aerospace, precision machinery and other fields, the machining of thin-walled cylindrical workpieces (such as engine bushings, hydraulic cylinders, etc.) requires extremely high clamping stability. Due to the thin walls and poor structural rigidity of such workpieces, they are prone to deformation during machining due to improper clamping force, which seriously affects the dimensional accuracy and geometric tolerances of the workpiece. Existing fixtures are generally simple in structure and easy to use, but they cannot adjust the clamping force according to the material of the workpiece or the machining process, which has a large risk of clamping deformation. Therefore, there is an urgent need for a deformation-resistant fixture for machining thin-walled precision components. Utility Model Content

[0003] The purpose of this invention is to address the deficiencies and shortcomings of the existing technology by providing a reasonably designed anti-deformation fixture for machining thin-walled precision components, thereby solving the aforementioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a base and clamping blocks, with several clamping blocks distributed at the top of the base with equal rounded corners;

[0005] It also includes:

[0006] The movable blocks are of several kinds and are respectively movably arranged in several movable slots with rounded corners on the upper part of the base. A first connecting block is fixedly arranged on the movable block, and a second connecting block is fixedly arranged on both sides of the first connecting block.

[0007] Connecting rods, there are several connecting rods, which are movably installed on several No. 2 connecting blocks. One end of the connecting rod is fixedly connected to the clamping block, and the other end of the connecting rod is fixedly provided with a limit block, which is in contact with the No. 2 connecting block. A movable rod is fixedly provided on the side wall of the clamping block at the position between two connecting rods.

[0008] The extrusion plate consists of several plates, which are movably sleeved on several movable rods. Springs are movably sleeved on the movable rods, and the two ends of the springs are fixedly connected to the clamping block and the extrusion plate, respectively. The movable block is provided with an adjustment mechanism connected to the extrusion plate.

[0009] A rotating disk is rotatably mounted inside a base via a rotating shaft. Several connecting rods with equal rounded corners are hinged to the annular sidewall of the rotating disk. One end of each connecting rod is rotatably connected to a movable block via the rotating shaft. An electric telescopic rod is hinged inside the base, with one end of the electric telescopic rod hinged to the rotating disk.

[0010] Furthermore, the adjustment mechanism includes:

[0011] The movable blocks are multiple in number and are movably disposed in the movable slots opened on the movable blocks respectively, and the extrusion plate is fixedly disposed on the movable blocks;

[0012] The rotating rod consists of several rotating rods, which are rotatably inserted into several movable slots via bearings. A threaded rod is movably sleeved on the rotating rod. The threaded rod is rotatably installed in a movable slot via bearings. A movable block is rotatably sleeved on the threaded rod via threads. Several ribs with equal rounded corners are distributed on the rotating rod, and the ribs are movably inserted into the threaded rod.

[0013] An adjustment handle is mounted on the left side wall of the base via a bearing and is fixedly connected to the left rotating rod. A bevel gear ring is rotatably mounted inside the base via a bearing. A bevel gear is fixedly sleeved on one end of the rotating rod, and several bevel gears are meshed with the bevel gear ring.

[0014] Furthermore, the movable block is provided with a scale line at one side of the moving groove, and the side wall of the extrusion plate is provided with a reference point that matches the scale line.

[0015] Furthermore, a positioning inner ring is fixedly provided on the upper part of the base, and the positioning inner ring is provided with a chamfer.

[0016] Furthermore, a flexible pad is fixedly provided on the arc-shaped sidewall of the clamping block, and the flexible pad is provided with anti-slip texture.

[0017] Furthermore, the movable rod has several reinforcing ribs with equal rounded corners, and the reinforcing ribs are fixedly installed on the side wall of the clamping block.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the anti-deformation fixture for processing thin-walled precision components described in this utility model can adjust the clamping force of the workpiece according to the different workpiece materials or processing procedures, so as to avoid workpiece deformation or loosening due to improper clamping. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a cross-sectional view of the base in this utility model.

[0021] Figure 3 This is a schematic diagram showing the connection between the rotating disc, connecting rod, and electric telescopic rod in this utility model.

[0022] Figure 4 This is an exploded view of the movable block, connecting block No. 1, connecting block No. 2, connecting rod, limiting block, movable rod, extrusion plate, spring, rotating rod, threaded rod and rib in this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] Base 1, clamping block 2, movable block 3, movable groove 4, connecting block 1 5, connecting block 2 6, connecting rod 7, limiting block 8, movable rod 9, pressing plate 10, spring 11, adjusting mechanism 12, moving block 12-1, rotating rod 12-2, threaded rod 12-3, rib 12-4, adjusting handle 12-5, bevel gear ring 12-6, bevel gear 12-7, rotating disk 13, connecting rod 14, electric telescopic rod 15, movable groove 16, positioning inner ring 17, flexible pad 18, anti-slip texture 19, reinforcing rib 20, scale line 21, reference point 22. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] like Figures 1-4 As shown, this specific embodiment adopts the following technical solution: It includes a base 1 and a clamping block 2. Several clamping blocks 2 are distributed with rounded corners on the upper part of the base 1. A positioning inner ring 17 is fixedly installed on the upper part of the base 1, and the positioning inner ring 17 is provided with a chamfer. The positioning inner ring 17 can not only provide positioning for the workpiece placed on the upper part of the base 1, but also realize the internal support for the workpiece, further reducing the phenomenon of workpiece clamping deformation. The chamfer can provide a certain guide when the workpiece is fitted on the positioning inner ring 17. A flexible pad 18 is fixedly installed on the arc-shaped side wall of the clamping block 2, and the flexible pad 18 is provided with anti-slip texture 19. Through the flexible pad 18, the clamping force can be evenly distributed to the surface of the workpiece, avoiding excessive local stress and causing workpiece deformation. At the same time, the buffering effect of the flexible pad 18 can also prevent the clamping block 2 from directly contacting the surface of the workpiece and causing scratches or indentations.

[0027] It also includes:

[0028] Movable block 3, there are several movable blocks 3, which are respectively movably arranged in several movable slots 4 with rounded corners on the upper part of the base 1. A first connecting block 5 is fixedly arranged on the movable block 3, and a second connecting block 6 is fixedly arranged on both sides of the first connecting block 5.

[0029] Connecting rod 7, of which there are several, are movably inserted through several second connecting blocks 6. One end of the connecting rod 7 is fixedly connected to the clamping block 2, and the other end of the connecting rod 7 is fixedly provided with a limiting block 8, which abuts against the second connecting block 6. A movable rod 9 is fixedly provided on the side wall of the clamping block 2 at the position between two connecting rods 7. Several reinforcing ribs 20 are distributed on the movable rod 9 with equal rounded corners, and the reinforcing ribs 20 are fixedly provided on the side wall of the clamping block 2. The reinforcing ribs 20 can improve the structural strength of the connection between the movable rod 9 and the clamping block 2.

[0030] The extrusion plate 10 consists of several extrusion plates 10, which are movably sleeved on several movable rods 9. Springs 11 are movably sleeved on the movable rods 9. The two ends of the springs 11 are fixedly connected to the clamping block 2 and the extrusion plate 10, respectively. The movable block 3 is provided with an adjustment mechanism 12 connected to the extrusion plate 10.

[0031] A rotating disk 13 is rotatably mounted inside a base 1 via a rotating shaft. Several connecting rods 14 with equal rounded corners are hinged on the annular sidewall of the rotating disk 13. One end of the connecting rod 14 is rotatably connected to the movable block 3 via a rotating shaft. An electric telescopic rod 15 is hinged inside the base 1. One end of the electric telescopic rod 15 is hinged to the rotating disk 13.

[0032] The adjustment mechanism 12 includes:

[0033] The movable block 12-1 consists of several movable blocks 12-1, which are movably disposed in the movable slots 16 opened on the movable blocks 3 respectively. The extrusion plate 10 is fixedly disposed on the movable block 12-1. The movable block 3 is provided with a scale line 21 at one side of the movable slot 16. The side wall of the extrusion plate 10 is provided with a reference point 22 that cooperates with the scale line 21. Through the cooperation of the scale line 21 and the reference point 22, the operator can more accurately control the clamping force and avoid workpiece deformation due to excessive clamping force or loosening of processing due to insufficient clamping force.

[0034] Rotating rod 12-2, there are several rotating rods 12-2, which are respectively rotatably inserted into several movable slots 4 through bearings. Threaded rod 12-3 is movably sleeved on the rotating rod 12-2. The threaded rod 12-3 is rotatably installed in the movable slot 16 through bearings. Movable block 12-1 is rotatably sleeved on the threaded rod 12-3 through threaded rotation. Several ribs 12-4 with equal rounded corners are distributed on the rotating rod 12-2, and the ribs 12-4 are movably inserted into the threaded rod 12-3.

[0035] Adjustment handle 12-5 is mounted on the left side wall of base 1 via bearings and is fixedly connected to the left rotating rod 12-2. A bevel gear ring 12-6 is rotatably mounted on the upper part of the base 1 via bearings. A bevel gear 12-7 is fixedly sleeved on one end of the rotating rod 12-2. Several bevel gears 12-7 are meshed with the bevel gear ring 12-6. The rotation of the rotating rod 12-2 and the rib 12-4 can realize the rotation of the threaded rod 12-3, which is used to adjust the position of the moving block 12-1 in the moving groove 16. While changing the distance between the extrusion plate 10 and the clamping block 2, the compression degree of the spring 11 can also be changed, thereby realizing the adjustment of the clamping force of the clamping block 2 on the workpiece.

[0036] When using this utility model, the workpiece is placed on the base 1 with the positioning inner ring 17 abutting against the inner wall of the workpiece. Then, the electric telescopic rod 15 is activated to extend it. The electric telescopic rod 15 drives the rotating disk 13 to rotate, and with the cooperation of several connecting rods 14, it drives several movable blocks 3 to move to the other side of the movable groove 4. The movable blocks 3 drive the first connecting block 5 to move. The first connecting block 5 drives the clamping block 2 to move towards the workpiece through the second connecting block 6 and the connecting rod 7, realizing the synchronous clamping of the workpiece by several clamping blocks 2. During the clamping process, the spring 11 is compressed by the clamping block 2. At this time, the rebound force generated by the spring 11 on the clamping block 2 will be transformed into the clamping force on the workpiece. When adjustment is required... When applying clamping force to the workpiece, the adjusting handle 12-5 can be rotated. The adjusting handle 12-5 drives the rotating rod 12-2 connected to it to rotate. By utilizing the meshing of the bevel gear ring 12-6 and several bevel gears 12-7, the synchronous rotation of several rotating rods 12-2 can be achieved. The rotating rod 12-2 drives the threaded rod 12-3 to rotate through the rib 12-4, which can change the position of the moving block 12-1 in the moving groove 16. This adjusts the distance between the pressing plate 10 and the clamping block 2 in the workpiece clamping state, changes the compression state of the spring 11, and causes the spring 11 to change the rebound thrust applied to the clamping block 2, thereby changing the clamping force applied by the clamping block 2 to the workpiece.

[0037] Compared with the prior art, the beneficial effects of this utility model are:

[0038] By cooperating with the rotating disk 13, connecting rod 14, electric telescopic rod 15, clamping block 2 and movable block 3, synchronous clamping of multiple positions on the outside of the workpiece can be achieved, which can not only effectively improve the clamping stability of the workpiece, but also have high clamping efficiency.

[0039] By cooperating with the No. 1 connecting block 5, the No. 2 connecting block 6, the connecting rod 7, the limiting block 8, the movable rod 9, the pressing plate 10, the spring 11 and the adjusting mechanism 12, the clamping force of the workpiece can be adjusted according to the different workpiece materials or processing procedures.

[0040] The positioning inner ring 17 not only provides positioning for the workpiece placed on the base 1, but also provides internal support for the workpiece, further reducing the phenomenon of workpiece clamping deformation.

[0041] The flexible pad 18 allows the clamping force to be evenly distributed on the workpiece surface, avoiding excessive local stress that could lead to workpiece deformation. At the same time, the buffering effect of the flexible pad 18 can also prevent the clamping block 2 from directly contacting the workpiece surface and causing scratches or indentations.

[0042] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A deformation-resistant fixture for machining thin-walled precision components, comprising a base (1) and clamping blocks (2), wherein several clamping blocks (2) are distributed with equal rounded corners above the base (1); Its features are, It also includes: Movable block (3), there are several movable blocks (3), which are respectively movably arranged in several movable slots (4) with rounded corners on the upper part of the base (1). A first connecting block (5) is fixedly arranged on the movable block (3), and a second connecting block (6) is fixedly arranged on both sides of the first connecting block (5). Connecting rod (7), there are several connecting rods (7), which are movably installed on several No. 2 connecting blocks (6). One end of the connecting rod (7) is fixedly connected to the clamping block (2), and the other end of the connecting rod (7) is fixedly provided with a limiting block (8), and the limiting block (8) is in contact with the No. 2 connecting block (6). A movable rod (9) is fixedly provided on the side wall of the clamping block (2) at the position between the two connecting rods (7). The extrusion plate (10) consists of several extrusion plates (10), which are movably sleeved on several movable rods (9). A spring (11) is movably sleeved on the movable rod (9). The two ends of the spring (11) are fixedly connected to the clamping block (2) and the extrusion plate (10) respectively. An adjustment mechanism (12) connected to the extrusion plate (10) is provided on the movable block (3). A rotating disk (13) is rotatably mounted inside a base (1) via a rotating shaft. Several connecting rods (14) are hinged to the annular sidewall of the rotating disk (13) with equal rounded corners. One end of the connecting rod (14) is rotatably connected to the movable block (3) via a rotating shaft. An electric telescopic rod (15) is hinged inside the base (1), and one end of the electric telescopic rod (15) is hinged to the rotating disk (13).

2. The anti-deformation fixture for machining thin-walled precision components according to claim 1, characterized in that: The adjustment mechanism (12) includes: The movable block (12-1) consists of several movable blocks (12-1), which are respectively movably arranged in the movable slots (16) opened on several movable blocks (3), and the extrusion plate (10) is fixedly arranged on the movable block (12-1); Rotating rod (12-2), there are several rotating rods (12-2), which are respectively rotatably inserted into several movable slots (4) through bearings. Threaded rod (12-3) is movably sleeved on the rotating rod (12-2). Threaded rod (12-3) is rotatably installed in movable slot (16) through bearings. Movable block (12-1) is rotatably sleeved on threaded rod (12-3) through thread. Several ribs (12-4) with equal rounded corners are distributed on the rotating rod (12-2), and the ribs (12-4) are movably inserted into threaded rod (12-3). Adjustment handle (12-5), the adjustment handle (12-5) is set on the left side wall of the base (1) through a bearing, and the adjustment handle (12-5) is fixedly connected to the left rotating rod (12-2). A bevel gear ring (12-6) is rotatably set inside the base (1) through a bearing. A bevel gear (12-7) is fixedly sleeved on one end of the rotating rod (12-2). Several bevel gears (12-7) are meshed with the bevel gear ring (12-6).

3. The anti-deformation fixture for machining thin-walled precision components according to claim 2, characterized in that: The movable block (3) is provided with a scale line (21) located on one side of the moving groove (16), and the side wall of the extrusion plate (10) is provided with a reference point (22) that matches the scale line (21).

4. The anti-deformation fixture for machining thin-walled precision components according to claim 1, characterized in that: The base (1) is fixedly provided with a positioning inner ring (17) on the upper part, and the positioning inner ring (17) is provided with a chamfer.

5. The anti-deformation fixture for machining thin-walled precision components according to claim 1, characterized in that: A flexible pad (18) is fixedly provided on the arc-shaped sidewall of the clamping block (2), and the flexible pad (18) is provided with anti-slip texture (19).

6. The anti-deformation fixture for machining thin-walled precision components according to claim 1, characterized in that: The movable rod (9) has several reinforcing ribs (20) with equal rounded corners, and the reinforcing ribs (20) are fixedly set on the side wall of the clamping block (2).

Images