Rotary clamp for multi-step machining of engine connecting rod

Abstract

The utility model relates to the technical field of rotary clamps, and discloses a rotary clamp for multi-step machining of an engine connecting rod, which comprises a base, a rotary disc is arranged above the base, and first hydraulic telescopic rods are uniformly distributed on the upper surface of the rotary disc; the mounting blocks are arranged at the inner ends of the first hydraulic telescopic rods, mounting grooves are formed in the mounting blocks, adjusting rods are mounted at the bottoms of the mounting blocks through bearings, and supporting frames are rotationally connected to the surfaces of the adjusting rods; and the first clamping jaws are arranged on the upper surface of the supporting frame, and second clamping jaws are arranged above the first clamping jaws. The additionally-arranged adjusting rod can drive the supporting frame to ascend and descend, so that the height of the first clamping jaw can be adjusted, a connecting rod can be clamped through the second clamping jaw and the first clamping jaw, the connecting rod cannot interfere with or collide with a machine tool or other parts in the complex machining process, and therefore the machining error and the damage risk are reduced; and the machining precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of rotary fixture technology, specifically a rotary fixture for multi-step machining of engine connecting rods. Background Technology

[0002] The rotary fixture is an automated clamping device that integrates a servo indexing plate, hydraulic / pneumatic clamping mechanism and high-rigidity alloy substrate. It can achieve 360° multi-angle precise positioning through CNC system control and support the completion of multiple processes such as milling, drilling and boring in one clamping of workpiece.

[0003] However, traditional gripper heights are often fixed, making it difficult to adapt to the machining requirements of connecting rods of different sizes and shapes. This can lead to interference or collisions between the connecting rod and the machine tool or other components during machining, resulting in machining errors and the risk of damage. Furthermore, because the connecting rod's posture is unstable during machining, its height is easily altered by vibrations, affecting machining accuracy. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a rotary fixture for multi-step machining of engine connecting rods. This solves the problem mentioned in the background art, where the clamping height is often fixed, making it difficult to adapt to the machining requirements of connecting rods of different sizes and shapes. This leads to interference or collisions between the connecting rod and the machine tool or other components during machining, resulting in machining errors and damage risks. Furthermore, because the connecting rod's posture is unstable during machining, its height is easily altered by vibrations, affecting machining accuracy.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a rotary fixture for multi-step machining of engine connecting rods, comprising:

[0008] A base, with a turntable on top of the base, a motor mounted on the upper surface of the base, the rotor of the motor coaxially connected to the bottom axis of the turntable, and first hydraulic telescopic rods evenly distributed on the upper surface of the turntable.

[0009] The mounting block is located at the inner end of the first hydraulic telescopic rod. Each mounting block has an installation groove inside. Each mounting block has an adjusting rod installed at its bottom via a bearing. Each adjusting rod has a support frame screwed onto its surface.

[0010] The first gripper is disposed on the upper surface of the support frame. A second gripper is disposed above the first gripper. A mounting frame is disposed on the upper surface of the mounting block. A second hydraulic telescopic rod is disposed on the upper surface of the mounting frame. The output end of the second hydraulic telescopic rod is connected to the upper surface of the second gripper.

[0011] Preferably, the adjusting rods are all connected to the inner ring of the bearing, and the mounting blocks are all connected to the outer ring of the bearing, so that the adjusting rods are not obstructed by the mounting blocks when rotating, and can be connected to the bottom of the mounting blocks.

[0012] Preferably, sliders are installed on both the front and rear sides of the support frame, and grooves are opened on the inner wall of the mounting groove at positions corresponding to the sliders. The sliders are inserted into the grooves, allowing the support frame to move vertically.

[0013] Preferably, positioning blocks are installed on the front and rear upper parts of the support frame, and locking bolts are screwed onto the upper surface of each positioning block. The lower part of each locking bolt is screwed onto the upper surface of the mounting block, and the support frame can be positioned by the locking bolts.

[0014] Preferably, a connecting block is installed on the upper part of the inner cavity of the mounting groove, and the top end of the adjusting rod is connected to the bottom of the connecting block through a rotating shaft. The connecting block is located at the opening in the middle of the support frame, so that the adjusting rod can rotate stably without hindering the lifting and lowering of the support frame.

[0015] Preferably, a limiting groove is formed on the upper surface of the base, and a support cylinder is installed at the bottom of the turntable. The support cylinder can support the turntable. Inserting the support cylinder into the limiting groove ensures that the turntable is not obstructed when rotating.

[0016] Beneficial effects

[0017] Compared with the prior art, this utility model provides a rotary fixture for multi-step machining of engine connecting rods, which has the following advantages:

[0018] This rotary fixture for multi-step machining of engine connecting rods features a first hydraulic telescopic rod that adjusts the position of the jaws. The jaws grip the engine connecting rod, ensuring its stability and accuracy during machining. Rotating the adjusting rod raises and lowers the support frame, thus adjusting the height of the first jaw. Activating the second hydraulic telescopic rod moves the second jaw downwards, engaging with the first jaw to clamp the engine connecting rod. This prevents the connecting rod from interfering with or colliding with the machine tool or other components during complex machining processes, reducing machining errors and the risk of damage. Simultaneously, it compensates for the height of the connecting rod, ensuring it remains at a specific height even when subjected to vibration, thereby improving the machining accuracy of the connecting rod. Attached Figure Description

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

[0020] Figure 2 This is a schematic diagram of the installation structure of the rotary table of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the mounting block of this utility model;

[0022] Figure 4 This is a cross-sectional view of the mounting block of this utility model;

[0023] Figure 5 This is a structural schematic diagram of the base of this utility model.

[0024] In the diagram: 1. Base; 2. Turntable; 3. Motor; 4. First hydraulic telescopic rod; 5. Mounting block; 6. Mounting groove; 7. Adjusting rod; 8. Support frame; 9. First gripper; 10. Second gripper; 11. Mounting frame; 12. Second hydraulic telescopic rod; 13. Slider; 14. Slide groove; 15. Positioning block; 16. Locking bolt; 17. Connecting block; 18. Limiting groove; 19. Support cylinder. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides a technical solution: a rotary fixture for multi-step machining of engine connecting rods. (See also...) Figure 1 Includes a base 1, with a rotating disk 2 located above the base 1. Please refer to [link / reference]. Figure 2 A motor 3 is installed on the upper surface of the base 1. The rotor of the motor 3 is coaxially connected to the bottom axis of the rotary table 2. The upper surface of the rotary table 2 is evenly provided with the first hydraulic telescopic rod 4.

[0027] By driving the rotary table 2 to rotate around its axis by the motor 3, the engine connecting rod can be switched between different processing stations;

[0028] Mounting block 5 is located at the inner end of the first hydraulic telescopic rod 4. Please refer to [link / reference]. Figure 4 Each mounting block 5 has an internal mounting groove 6, and each mounting block 5 has an adjusting rod 7 mounted on its bottom via a bearing. Each adjusting rod 7 has a support frame 8 screwed onto its surface.

[0029] The first gripper 9 is located on the upper surface of the support frame 8. Please refer to [link / reference]. Figure 3 A second gripper 10 is provided above each of the first grippers 9. A mounting bracket 11 is installed on the upper surface of each mounting block 5. A second hydraulic telescopic rod 12 is installed on the upper surface of each mounting bracket 11. The output end of the second hydraulic telescopic rod 12 is connected to the upper surface of the second gripper 10.

[0030] Activating the first hydraulic telescopic rod 4 can adjust the position of the gripper, which can hold the engine connecting rod to ensure its stability and accuracy during processing;

[0031] The rotating adjustment rod 7 can drive the support frame 8 to rise and fall, thereby adjusting the height of the first gripper 9. Activating the second hydraulic telescopic rod 12 can drive the second gripper 10 to move downward and cooperate with the first gripper 9 to clamp the engine connecting rod. This prevents the connecting rod from interfering with or colliding with the machine tool or other components during complex machining processes, thereby reducing machining errors and damage risks and improving machining accuracy.

[0032] Please see Figure 4 The adjusting rods 7 are all connected to the inner ring of the bearing, and the mounting blocks 5 are all connected to the outer ring of the bearing, so that the adjusting rods 7 are not obstructed by the mounting blocks 5 when rotating, and can be connected to the bottom of the mounting blocks 5.

[0033] The support frame 8 is equipped with sliders 13 on both the front and rear sides. The inner wall of the mounting groove 6 is provided with grooves 14 corresponding to the sliders 13. The sliders 13 are inserted into the grooves 14, so that the support frame 8 can move vertically.

[0034] Positioning blocks 15 are installed on the front and rear upper parts of the support frame 8. Locking bolts 16 are screwed onto the upper surface of the positioning blocks 15. The lower part of the locking bolts 16 is screwed onto the upper surface of the mounting block 5. The support frame 8 can be positioned by the locking bolts 16.

[0035] A connecting block 17 is installed on the upper part of the inner cavity of the mounting slot 6. The top of the adjusting rod 7 is connected to the bottom of the connecting block 17 through a rotating shaft. The connecting block 17 is located at the opening in the middle of the support frame 8, so that the adjusting rod 7 can rotate stably without obstructing the lifting and lowering of the support frame 8.

[0036] Please see Figure 5 A limiting groove 18 is formed on the upper surface of the base 1. Please refer to [reference needed]. Figure 1 A support cylinder 19 is installed at the bottom of the rotary table 2. The support cylinder 19 can support the rotary table 2. The support cylinder 19 is inserted into the limiting groove 18 so that the rotary table 2 will not be obstructed by the support cylinder 19 when it rotates.

[0037] In operation, this solution works as follows: First, rotating the adjusting rod 7 raises and lowers the support frame 8, thereby adjusting the height of the first gripper 9. Activating the second hydraulic telescopic rod 12 moves the second gripper 10 downwards, where it cooperates with the first gripper 9 to clamp the engine connecting rod. This prevents the connecting rod from interfering with or colliding with the machine tool or other components during complex machining processes, reducing machining errors and damage risks, and improving machining accuracy. Then, the locking bolt 16 positions the support frame 8, ensuring the gripper can stably clamp the connecting rod. Finally, activating the first hydraulic telescopic rod 4 adjusts the position of the gripper, allowing it to hold the engine connecting rod and ensuring its stability and accuracy during machining.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary fixture for multi-step machining of engine connecting rods, characterized in that, include: A base (1) is provided above a turntable (2). A motor (3) is installed on the upper surface of the base (1). The rotor of the motor (3) is coaxially connected to the bottom axis of the turntable (2). A first hydraulic telescopic rod (4) is evenly distributed on the upper surface of the turntable (2). Mounting block (5) is set at the inner end of the first hydraulic telescopic rod (4). Mounting slot (6) is provided inside each mounting block (5). Adjusting rod (7) is installed at the bottom of each mounting block (5) through a bearing. Support frame (8) is screwed onto the surface of each adjusting rod (7). The first gripper (9) is disposed on the upper surface of the support frame (8). A second gripper (10) is disposed above the first gripper (9). A mounting frame (11) is mounted on the upper surface of the mounting block (5). A second hydraulic telescopic rod (12) is mounted on the upper surface of the mounting frame (11). The output end of the second hydraulic telescopic rod (12) is connected to the upper surface of the second gripper (10).

2. The rotary fixture for multi-step machining of engine connecting rods according to claim 1, characterized in that: The adjusting rods (7) are all connected to the inner ring of the bearing, and the mounting blocks (5) are all connected to the outer ring of the bearing.

3. The rotary fixture for multi-step machining of engine connecting rods according to claim 1, characterized in that: The support frame (8) is equipped with sliders (13) on both the front and rear sides, and the inner wall of the mounting groove (6) is provided with grooves (14) corresponding to the sliders (13).

4. A rotary fixture for multi-step machining of engine connecting rods according to claim 1, characterized in that: Positioning blocks (15) are installed on the front and rear upper parts of the support frame (8). Locking bolts (16) are screwed onto the upper surface of the positioning blocks (15). The lower part of the locking bolts (16) is screwed onto the upper surface of the mounting block (5).

5. A rotary fixture for multi-step machining of engine connecting rods according to claim 1, characterized in that: A connecting block (17) is installed on the upper part of the inner cavity of the mounting groove (6). The top end of the adjusting rod (7) is connected to the bottom of the connecting block (17) through a rotating shaft. The connecting block (17) is located at the opening in the middle of the support frame (8).

6. A rotary fixture for multi-step machining of engine connecting rods according to claim 1, characterized in that: The upper surface of the base (1) is provided with a limiting groove (18), and the bottom of the rotary table (2) is provided with a support cylinder (19).

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