Rotary pressing clamp

Abstract

The utility model relates to the technical field of workpiece machining, and provides a rotary pressing clamp which is used for fixing a workpiece to be machined, a plurality of protruding structures are arranged in the circumferential direction of the workpiece, and the rotary pressing clamp comprises a main body, a plurality of fixing seats and a plurality of pressing blocks, the fixing seats are movably connected with the pressing blocks, and one ends of the pressing blocks abut against the protruding structures; the end, away from the protruding structure, of each pressing block is in threaded connection with the corresponding supporting piece. When one end of the pressing block abuts against the protruding structure and is used for fixing a workpiece, the protruding structure can generate counter-acting force which is equal in size and opposite in direction on the pressing block, and in order to balance the counter-acting force, the supporting piece abuts against the fixing base and provides supporting force which is opposite to the counter-acting force borne by the pressing block in direction. It is ensured that the pressing block cannot incline or deviate due to unbalanced force, and the rotary pressing clamp can stably and accurately position and fix a workpiece.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece processing, in particular to a rotary pressing clamp. Background Art

[0002] A fixture is a device used to fix, position and support a workpiece during machining, assembly, measurement or testing. The main purpose of a fixture is to ensure that the workpiece can maintain a stable position during operation, thereby improving machining accuracy, production efficiency and product quality.

[0003] In the prior art, when the clamp fixes the workpiece, one end of the pressing block is designed to contact and apply pressure to a specific surface of the workpiece. However, the reaction force of the workpiece on the pressing block may cause the pressing block to tilt. The tilt of the pressing block not only reduces the effective contact area with the workpiece, resulting in a decrease in the fixing effect, but also, in some cases, may generate additional horizontal thrust on the workpiece, thereby affecting the positioning accuracy of the workpiece and causing positioning deviation. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a rotating pressing clamp in view of the current status of the prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problems is to propose a rotary pressing fixture for fixing a workpiece to be processed, wherein the workpiece has a plurality of protruding structures in the circumferential direction, and the rotary pressing fixture comprises:

[0006] The main body has a plurality of fixing seats arranged in the circumferential direction;

[0007] A pressing block, each of the fixing seats is movably connected with the pressing block, one end of the pressing block is pressed against the protruding structure to fix the workpiece;

[0008] A support member, wherein one end of each of the pressing blocks away from the protruding structure is threadedly connected to the support member, and the support member can be pressed against the fixing seat due to the pressing block being pressed against the protruding structure, so as to provide support for the pressing block.

[0009] In the above-mentioned rotary pressing clamp, the supporting member is a bolt, the pressing block is provided with a threaded hole for inserting the bolt, and one end of the bolt passes through the threaded hole and movably abuts against the fixing seat.

[0010] In the above-mentioned rotary pressing clamp, a driving assembly is further provided on the main body, and the driving assembly is transmission-connected with the pressing block for driving the pressing block to move.

[0011] In the above-mentioned rotary pressing fixture, the driving assembly includes:

[0012] A lifting plate, which is arranged in the main body;

[0013] Connecting rods, a plurality of connecting rods are arranged in the circumferential direction of the lifting plate, a through hole is arranged on the fixing seat, one end of the connecting rod away from the lifting plate passes through the through hole and is connected to the pressing block, and the lifting plate drives the pressing block to move through the connecting rods;

[0014] A driving rod is arranged on the main body and connected to the lifting plate, and is used for driving the lifting plate to move up and down.

[0015] In the above-mentioned rotary pressing clamp, a guide piece is arranged on the connecting rod, and a guide groove is arranged on the side wall of the through hole. The guide piece can move along the guide groove due to the lifting and lowering of the connecting rod.

[0016] In the above-mentioned rotary pressing fixture, a plurality of positioning blocks are also arranged on the main body, which are arranged opposite to the pressing block and are used to provide positioning for the workpiece.

[0017] Compared with the prior art, the advantage of the present invention lies in that a support member is arranged at the end of the pressing block away from the protruding structure on the workpiece. When one end of the pressing block is subjected to a reaction force due to being pressed against the protruding structure, the support member directly rests against the fixed seat, providing a support force in the opposite direction to the reaction force received by the pressing block, ensuring that the pressing block will not tilt or shift due to the unbalanced force, so that the rotary pressing clamp in this scheme can provide stable and precise positioning and fixation for the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of this scheme;

[0019] Figure 2 yes Figure 1 The three-dimensional diagram of the structure of the middle part;

[0020] Figure 3 It is a three-dimensional diagram of the workpiece in this scheme.

[0021] In the figure, 1. main body; 2. fixed seat; 3. pressure block; 4. support member; 5. driving assembly; 6. lifting plate; 7. connecting rod; 8. bearing; 9. driving rod; 10. guide member; 11. guide groove; 12. positioning block; 13. workpiece; 14. protruding structure. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] like Figures 1 to 3As shown, a rotary pressing fixture of the utility model is used to fix a workpiece 13 to be processed, and the workpiece 13 has a plurality of protruding structures 14 in the circumferential direction. The rotary pressing fixture comprises: a main body 1, on which a plurality of fixing seats 2 are arranged in the circumferential direction; a pressing block 3, each fixing seat 2 is movably connected with a pressing block 3, one end of the pressing block 3 is tightly pressed against the protruding structure 14, and is used to provide fixation for the workpiece 13; a supporting member 4, each pressing block 3 is threadedly connected with a supporting member 4 at one end away from the protruding structure 14, and the supporting member 4 can be pressed against the fixing seat 2 due to the pressing block 3 being tightly pressed against the protruding structure 14, and is used to provide support for the pressing block 3.

[0024] During operation, the workpiece 13 is precisely placed on the main body 1, and one end of each pressing block 3 is in close contact with the protruding structure 14 on the workpiece 13 and applies vertical pressure to it. According to Newton's third law, the protruding structure 14 of the workpiece 13 will produce an equal and opposite reaction force on the pressing block 3. In order to balance this reaction force, the other end of the pressing block 3 forms a stable supporting structure with the fixing seat 2 through the support member 4. The support member 4 directly rests on the fixing seat 2 to provide a supporting force in the opposite direction to the reaction force received by the pressing block 3, ensuring that the pressing block 3 will not tilt or shift due to the unbalanced force. The design of the support member 4 ensures that the force of the pressing block 3 is evenly distributed in the entire area in contact with the workpiece 13 and remains stable at all times, so that the rotary pressing fixture in this scheme can provide stable and precise positioning and fixation for the workpiece 13.

[0025] The specific support member 4 is a bolt, and a threaded hole for inserting the bolt is provided on the pressure block 3. One end of the bolt passes through the threaded hole and movably abuts against the fixing seat 2. The protruding length of the bolt can be adjusted to adapt to protruding structures of different sizes on the workpiece 13. When the pressure block 3 contacts the protruding structure 14 of the workpiece 13 and applies pressure, the protruding end of the bolt just forms a stable contact with the fixing seat 2, providing a supporting force in the opposite direction to the reaction force exerted on the pressure block 3. By accurately adjusting the protruding length of the bolt, it can be ensured that no matter how the size of the protruding structure 14 of the workpiece 13 changes, the bolt can just abut against the fixing seat 2, providing sufficient support for the pressure block 3 and preventing it from tilting due to uneven force.

[0026] In order to drive the pressing block 3 to move, a driving assembly 5 is further provided on the main body 1 , and the driving assembly 5 is transmission-connected with the pressing block 3 .

[0027] Specifically, the driving assembly 5 includes: a lifting plate 6, which is arranged in the main body 1; a connecting rod 7, a plurality of connecting rods 7 are arranged in the circumferential direction of the lifting plate 6, and a bearing 8 is arranged at the end of each connecting rod 7, the inner ring of the bearing 8 is fixed on the connecting rod 7, and the outer ring of the bearing 8 is fixed on the lifting plate 6, and a through hole is arranged on the fixed seat 2, and the end of the connecting rod 7 away from the lifting plate 6 passes through the through hole and is connected to the pressure block 3; a driving rod 9, which is arranged on the main body 1 and connected to the lifting plate 6, and is used to drive the lifting plate 6 to rise and fall.

[0028] Furthermore, a guide member 10 is provided on the connecting rod 7, and a guide groove 11 is provided on the side wall of the through hole. The guide member 10 can move along the guide groove 11 during the lifting and lowering process of the connecting rod 7, thereby guiding the connecting rod 7 to rotate while lifting and lowering. The guide member 10 is preferably a pin.

[0029] After the workpiece 13 is placed on the main body 1, the driving rod 9 drives the lifting plate 6 to descend under the drive of a driving device (such as a motor, oil cylinder or air cylinder). As the lifting plate 6 descends, the connecting rod 7 also descends, and the guide member 10 moves along the guide groove 11 to guide the connecting rod 7 to rotate while descending. This rotational movement causes the pressing block 3 to rotate while descending, thereby pressing against the workpiece 13 and applying pressure to it. After the workpiece 13 is processed, the driving rod 9 moves in the opposite direction, driving the lifting plate 6 to rise, and the connecting rod 7 rises and rotates in the opposite direction. The pressing block 3 is driven by the connecting rod 7 to release the workpiece 13 and return to the initial position, ensuring that it will not interfere with the removal of the workpiece 13 and the placement of the next workpiece 13.

[0030] In order to ensure the precise positioning of the workpiece 13 during the processing, a number of positioning blocks 12 are further provided on the main body 1. These positioning blocks 12 are arranged opposite to the pressing block 3. When the workpiece 13 is placed on the main body 1, the protruding structure 14 thereon is just located above the positioning block 12 and contacts therewith, thereby realizing the preliminary positioning of the workpiece 13. Subsequently, the pressing block 3, driven by the driving assembly 5, presses against and applies pressure to the protruding structure 14 of the workpiece 13, and combines with the supporting effect of the positioning block 12 to form a stable positioning system, thereby ensuring that the workpiece 13 is in a stable position during the entire processing process and will not move or deform.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, in the present invention, the descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the scope defined by the spirit of the present invention.

Claims

1. A rotary pressing fixture for fixing a workpiece to be processed, wherein the workpiece has a plurality of protruding structures in the circumferential direction, characterized in that: The rotary pressing fixture comprises: The main body has a plurality of fixing seats arranged in the circumferential direction; A pressing block, each of the fixing seats is movably connected with the pressing block, one end of the pressing block is pressed against the protruding structure to fix the workpiece; A support member, wherein one end of each of the pressing blocks away from the protruding structure is threadedly connected to the support member, and the support member can be pressed against the fixing seat due to the pressing block being pressed against the protruding structure, so as to provide support for the pressing block.

2. A rotary pressing fixture as claimed in claim 1, characterized in that: The supporting member is a bolt, and the pressing block is provided with a threaded hole for the bolt to be inserted, and one end of the bolt passes through the threaded hole and movably abuts against the fixing seat.

3. A rotary pressing fixture as claimed in claim 1, characterized in that: The main body is also provided with a driving assembly, which is transmission-connected with the pressing block and is used for driving the pressing block to move.

4. A rotary pressing fixture as claimed in claim 3, characterized in that: The drive assembly comprises: A lifting plate, which is arranged in the main body; Connecting rods, a plurality of connecting rods are arranged in the circumferential direction of the lifting plate, a through hole is arranged on the fixing seat, one end of the connecting rod away from the lifting plate passes through the through hole and is connected to the pressing block, and the lifting plate drives the pressing block to move through the connecting rods; A driving rod is arranged on the main body and connected to the lifting plate, and is used for driving the lifting plate to move up and down.

5. A rotary pressing fixture as claimed in claim 4, characterized in that: The connecting rod is provided with a guide piece, and the side wall of the through hole is provided with a guide groove. The guide piece can move along the guide groove due to the lifting and lowering of the connecting rod.

6. A rotary pressing fixture as claimed in claim 1, characterized in that: The main body is also provided with a plurality of positioning blocks, which are arranged opposite to the pressing block and are used to provide positioning for the workpiece.

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