A clamping device for machining

Abstract

The utility model discloses a kind of pressing plate devices for machining, including pressing plate and fixed mounting seat, one end of pressing plate is pressure setting end, the other end of pressing plate is mounting end, characterized in that fixed mounting seat is provided with internally hollow mounting sleeve, the lower portion of mounting end is provided with the rotating installation part matched with the inner cavity of mounting sleeve, rotating installation part is rotatably extended into being arranged in mounting sleeve, mounting end and fixed mounting seat are provided with the positioning mechanism for positioning the pressure setting position of pressing plate and the lock position mechanism for realizing position locking after the pressure setting position of pressing plate is positioned, which is simple in structure, can realize pressing and avoidance, has low cost, and is convenient for maintenance and spare parts replacement.

Description

Technical Field

[0001] This utility model relates to the field of workpiece machining technology, and in particular to a pressure plate device for machining. Background Technology

[0002] In the field of machining, the pressure plate device is a key component of the clamping system used to clamp the workpiece and ensure machining accuracy. At present, the most common pressure plate device for machining is the hydraulic rotary cylinder with a pressure plate. It integrates the drive source (hydraulic), the rotary actuator and the pressure plate into one unit, which can realize the automatic rotation and straight clamping of the pressure plate, effectively improving the clamping efficiency. However, this highly integrated pressure plate device also has obvious disadvantages: (1) Due to the complex structure of the hydraulic rotary cylinder itself, the purchase price is relatively high, and the usage cost is relatively high for the processing of small batches of products; (2) Due to the precision of its use, the cycle from ordering to delivery is long, which is not conducive to the rapid transformation and deployment of the production line; (3) Once the internal core components are damaged (such as the rotary seal), it is basically necessary to replace the entire assembly or customize special parts, resulting in high maintenance costs and long downtime; (4) When the processed products are changed, the original hydraulic rotary cylinder is often difficult to reuse directly and needs to be customized again, which further increases the production cost and preparation time. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a machining pressure plate device that is simple in structure, can achieve both pressing and avoidance, and is low in cost, short in manufacturing cycle, and easy to maintain and replace parts.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: A pressure plate device for machining includes a pressure plate and a fixed mounting base. One end of the pressure plate is a pressing end, and the other end of the pressure plate is a mounting end. The fixed mounting base is provided with an internally hollow mounting sleeve. The lower part of the mounting end is provided with a rotating mounting part that cooperates with the inner cavity of the mounting sleeve. The rotating mounting part can be rotatably extended into the mounting sleeve. A positioning mechanism for positioning the pressing position of the pressure plate and a locking mechanism for locking the position after the pressing position of the pressure plate is positioned are provided between the mounting end and the fixed mounting base. The positioning mechanism includes a matching positioning groove and a positioning protrusion, and the locking mechanism includes a matching locking rod and a locking nut. The mounting sleeve is provided with a positioning groove with an upper opening, and the side of the mounting end is provided with a positioning protrusion. The positioning protrusion is embedded in the positioning groove to achieve positioning. The mounting end has a locking cavity that runs vertically through the top and bottom. The locking cavity includes an upper locking section and a lower locking section that are coaxially arranged from top to bottom. The inner diameter of the upper locking section is larger than the inner diameter of the lower locking section, forming a locking step surface. The locking rod is fixedly installed inside the mounting sleeve. The top of the locking rod is coaxially provided with a threaded connection section that mates with the locking nut. The threaded connection section extends from bottom to top through the lower locking section and into the upper locking section to be screwed to the locking nut. Once the positioning protrusion is embedded in the positioning groove for positioning, tightening the locking nut causes the bottom surface of the locking nut to press against the locking step surface, thereby locking the pressing position of the pressure plate; loosening the locking nut releases the lock.

[0005] The top of the locking nut is provided with a hexagonal operating protrusion or a hexagonal operating groove.

[0006] A spring is provided inside the mounting sleeve, and the top end of the spring abuts against the bottom end of the rotating mounting part. In the locked state, the spring is in a compressed state.

[0007] The spring is sleeved on the locking rod.

[0008] The pressing end is equipped with a pressing head.

[0009] The pressure head is detachably mounted on the pressing end.

[0010] The pressing end is provided with a connecting screw hole, and the upper part of the pressing head is provided with a matching threaded connection part. The pressing head and the pressing end are detachably connected by the threaded connection part being screwed into the connecting screw hole.

[0011] Compared with the prior art, the advantages of this utility model are: (1) The structure of the split fixed mounting base and the pressure plate is used to replace the traditional complex hydraulic rotary cylinder assembly, which significantly reduces the cost; (2) The core components of the main body consist only of a rotating mounting part and a mounting sleeve. The structure is simple. If the core components are damaged, there is no need to replace the entire device. It is easy to maintain and has low cost, effectively shortening the equipment downtime. (3) The modular split design means that the whole does not depend on a specific drive source and can be flexibly configured as needed, which facilitates the rapid transformation and deployment of the production line and shortens the supply cycle; (4) When the processed products change, the general fixed mounting base can usually be retained. Only some parts such as the pressure plate need to be adjusted or replaced to adapt to the new requirements, which improves the reuse rate of the equipment and reduces the investment in modification. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention in the locked state; Figure 2 This is a first cross-sectional view of the present invention in the locked position. Figure 3 This is a second cross-sectional view of the present invention in the locked position. Figure 4 This is a cross-sectional view of the pressure plate of this utility model. Figure 5 This is an exploded structural diagram of the present invention. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0014] As shown in the figure, a pressure plate device for machining includes a pressure plate 1 and a fixed mounting base 2. One end of the pressure plate 1 is a pressing end 11, and the other end of the pressure plate 1 is a mounting end 12. The fixed mounting base 2 is provided with a hollow mounting sleeve 21. The lower part of the mounting end 12 is provided with a rotating mounting part 121 that cooperates with the inner cavity 210 of the mounting sleeve 21. The rotating mounting part 121 can be rotatably extended into the mounting sleeve 21. A positioning mechanism for positioning the pressing position of the pressure plate 1 and a locking mechanism for locking the position after the pressing position of the pressure plate 1 is positioned are provided between the mounting end 12 and the fixed mounting base 2.

[0015] In this specific embodiment, the positioning mechanism includes a cooperating positioning groove 211 and a positioning protrusion 10, and the locking mechanism includes a cooperating locking rod 3 and a locking nut 4. The mounting sleeve 21 is provided with a positioning groove 211 with an upper opening, and the side of the mounting end 12 is provided with a positioning protrusion 10. The positioning protrusion 10 is embedded in the positioning groove 211 to achieve positioning. The mounting end 12 has a locking cavity 122 that runs vertically through the upper and lower parts. The locking cavity 122 includes an upper locking section 1221 and a lower locking section 1222 that are coaxially arranged from top to bottom. The inner diameter of the upper locking section 1221 is larger than the inner diameter of the lower locking section 1222, forming a locking step surface 1223. The locking rod 3 is fixedly installed inside the mounting sleeve 21. The top of the locking rod 3 is coaxially provided with a threaded connection section 31 that cooperates with the locking nut 4. The threaded connection section 31 extends from bottom to top through the lower locking section 1222 and into the upper locking section 1221 to be screwed to the locking nut 4. After the positioning protrusion 10 is embedded in the positioning groove 211 and positioned, the bottom end of the locking nut 4 is pressed against the locking step surface 1223 by tightening the locking nut 4, thereby locking the pressing position of the pressure plate 1; the locking position can be released by loosening the locking nut 4.

[0016] The positioning groove 211 and the positioning protrusion 10 work together to achieve fast and accurate positioning. The locking rod 3 and the locking nut 4 work together to provide a stable mechanical locking force, ensuring the rigidity and stability of the pressure plate 1 in the working state. The positioning and locking action logic is clear and the operation is smooth: the positioning protrusion 10 is inserted into the positioning groove 211 to complete the initial positioning, then tightening the nut completes the final locking, and loosening the nut releases the lock. The operation is simple and intuitive.

[0017] In this specific embodiment, the top protrusion of the locking nut 4 is provided with a hexagonal operating protrusion 41. This facilitates tightening or loosening using common tools (such as wrenches), making operation convenient and improving clamping efficiency. After locking, at least a portion of this protrusion extends above the pressing end 11 to facilitate tightening operations.

[0018] In this specific embodiment, a spring 5 is provided inside the mounting sleeve 21. The top end of the spring 5 abuts against the bottom end of the rotating mounting part 121. In the locked state, the spring 5 is in a compressed state. The spring 5 provides an upward pre-pushing force. After the locking nut 4 is loosened, the compressed spring 5 returns to its original position, which can automatically push the rotating mounting part 121 of the pressure plate 1 upward a small distance, making it easier for the positioning protrusion 10 to disengage from the positioning groove 211, facilitating the rotation operation of the pressure plate 1 and preventing jamming.

[0019] In this specific embodiment, the spring 5 is sleeved on the locking rod 3. Sleeving the spring 5 onto the locking rod 3 results in a compact structure, ensuring the centering and stability of the spring 5 during operation and preventing its deflection.

[0020] In this specific embodiment, the pressing end 11 is provided with a pressing head 6.

[0021] In this specific embodiment, the pressure head 6 is detachably mounted on the pressing end 11. Providing an independent pressure head 6 allows for the design or replacement of different types of pressure heads 6 according to the workpiece shape and clamping requirements, enhancing the applicability of the device.

[0022] In this specific embodiment, the pressing end 11 is provided with a connecting screw hole 111, and the upper part of the pressing head 6 is provided with a matching threaded connection part 61. The pressing head 6 and the pressing end 11 are detachably connected by the threaded connection part 61 screwed into the connecting screw hole 111. The use of a threaded connection to achieve the detachability of the pressing head 6 is simple in structure, reliable in connection, and convenient in assembly and disassembly. When the pressing head 6 is worn or needs to be replaced, it can be quickly replaced, reducing maintenance costs and expanding the versatility of the device.

[0023] In this specific embodiment, the fixed mounting base 2 is fixedly mounted on the tooling base plate, the inner cavity 210 of the mounting sleeve 21 is vertically through, and the bottom of the locking rod 3 extends downwards and is fixedly mounted on the tooling base plate.

Claims

1. A pressure plate device for machining, comprising a pressure plate and a fixed mounting base, wherein one end of the pressure plate is a pressing end and the other end of the pressure plate is a mounting end, characterized in that... The fixed mounting base is provided with an internally hollow mounting sleeve. The lower part of the mounting end is provided with a rotating mounting part that cooperates with the inner cavity of the mounting sleeve. The rotating mounting part can be rotatably extended into the mounting sleeve. A positioning mechanism for positioning the pressing position of the pressure plate and a locking mechanism for locking the position after the pressing position of the pressure plate is positioned are provided between the mounting end and the fixed mounting base. The positioning mechanism includes a matching positioning groove and a positioning protrusion, and the locking mechanism includes a matching locking rod and a locking nut. The mounting sleeve is provided with a positioning groove with an upper opening, and the side of the mounting end is provided with a positioning protrusion. The positioning protrusion is embedded in the positioning groove to achieve positioning. The mounting end has a locking cavity that runs vertically through the top and bottom. The locking cavity includes an upper locking section and a lower locking section that are coaxially arranged from top to bottom. The inner diameter of the upper locking section is larger than the inner diameter of the lower locking section, forming a locking step surface. The locking rod is fixedly installed inside the mounting sleeve. The top of the locking rod is coaxially provided with a threaded connection section that mates with the locking nut. The threaded connection section extends from bottom to top through the lower locking section and into the upper locking section to be screwed to the locking nut. Once the positioning protrusion is embedded in the positioning groove for positioning, tightening the locking nut causes the bottom surface of the locking nut to press against the locking step surface, thereby locking the pressing position of the pressure plate; loosening the locking nut releases the lock.

2. The pressure plate device for machining as described in claim 1, characterized in that... The top of the locking nut is provided with a hexagonal operating protrusion or a hexagonal operating groove.

3. The pressure plate device for machining as described in claim 1, characterized in that... A spring is provided inside the mounting sleeve, and the top end of the spring abuts against the bottom end of the rotating mounting part. In the locked state, the spring is in a compressed state.

4. The pressure plate device for machining as described in claim 1, characterized in that... The pressing end is equipped with a pressing head.

5. A pressure plate device for machining as described in claim 4, characterized in that... The pressure head is detachably mounted on the pressing end.

6. A pressure plate device for machining as described in claim 5, characterized in that... The pressing end is provided with a connecting screw hole, and the upper part of the pressing head is provided with a matching threaded connection part. The pressing head and the pressing end are detachably connected by the threaded connection part being screwed into the connecting screw hole.

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