An irregular plate-shaped part clamping device

Abstract

This application provides a clamping device for irregularly shaped plate-like parts, including: a base, a valve body, and clamping rods. The base has an upper channel and a lower channel along the normal direction, with the ends of the upper and lower channels connected. The front end of the upper channel is connected to a sliding groove. At least four sets of upper channels, lower channels, and sliding grooves are arranged in a circumferential array. A countersunk hole is formed in the middle of the bottom surface of the base, and all lower channels are connected to the countersunk hole. The valve body is rotatably mounted within the countersunk hole. The valve body has at least four through holes arranged in a circumferential array, all of which are interconnected. A connecting pipe is provided on the bottom surface of the valve body, communicating with the through holes, and the connecting pipe is connected to a hydraulic station. The number of clamping rods is the same as the number of sliding grooves. The lower end of the clamping rod slides within the sliding groove. A push rod is provided at the lower end of the clamping rod, passing through the upper channel corresponding to the sliding groove. The outer wall of the push rod is sealed to the inner wall of the upper channel. A protrusion is provided on the outer side of the top surface of the clamping rod. This solution can adapt to the clamping of various irregularly shaped parts and has high assembly and disassembly efficiency.

Description

Technical Field

[0001] This invention belongs to the field of clamping technology, and in particular relates to a clamping device for irregularly shaped plate-shaped parts. Background Technology

[0002] In the machining of mechanical parts, it is often necessary to inspect and deburr various holes, grooves and other structures. In order to facilitate operation, the parts are usually suspended in the air so that the hole diameter can be inspected using go gauges and no-go gauges, and the holes and grooves of through structures can be deburred.

[0003] Most existing clamping devices use three or four jaws to clamp parts. There are two main ways to move the jaws. One is to use the same drive mechanism to drive multiple jaws synchronously. Although the overall structure is simple, this structure is only suitable for parts with relatively regular shapes, such as circles and squares. The other is to have a drive mechanism for each jaw. Traditional drive structures include lead screw transmission and cam clamping. Although it can accommodate parts with irregular outer contours, such as right trapezoids, hexagons with unequal side spacing, and ellipses, the overall structure of this type is more complex. Clamping and releasing require the operation of multiple drive mechanisms, making the clamping process more cumbersome. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a clamping device for irregularly shaped plate-like parts, which can adapt to the clamping of various irregularly shaped parts and has high assembly and disassembly efficiency.

[0005] In order to achieve the objective of this invention, the following solution is proposed: A clamping device for irregularly shaped plate-like parts includes: a base, a valve body, and a clamping rod.

[0006] The base has upper and lower channels spaced apart along the normal direction. The upper channel is located above the lower channel. The upper and lower channels are connected to each other at their outer ends. The upper channel is connected to a groove near the middle of the base. The length of the groove is parallel to the axis of the upper channel. At least four sets of upper channels, lower channels and grooves are arranged in a circular array along the circumference of the base. A countersunk hole is opened in the middle of the bottom surface of the base. All lower channels are connected to the countersunk hole.

[0007] The valve body is a cylindrical structure that rotates within a countersunk hole. The valve body has at least four through holes arranged in a circumferential array for connecting to the lower channel. All through holes are interconnected at one end in the middle of the valve body. The area between adjacent through holes on the outer wall of the valve body is larger than the inner diameter of the lower channel. A connecting pipe communicating with the through holes is provided in the middle of the bottom surface of the valve body. The connecting pipe is connected to the hydraulic station through an oil pipe.

[0008] The number of clamping rods is the same as the number of slide grooves. The clamping rods are slidably installed in the slide grooves through their lower ends. The lower end of the clamping rods is provided with a top rod that is aligned with the normal direction of the base. The top rod is coaxially inserted into the upper channel corresponding to the slide groove. The outer wall of the top rod is sealed to the inner wall of the upper channel. The outer side of the top surface of the clamping rod is provided with a protrusion.

[0009] The beneficial effects of this invention are as follows: during the placement and clamping of parts, each clamping tube can move independently to adapt to parts of different shapes; however, when clamping parts, multiple clamping rods can be pressed against the parts simultaneously and maintain the same clamping force, resulting in a faster clamping speed. Furthermore, when removing parts, multiple top rods can be depressurized simultaneously to achieve rapid release; at the same time, the clamping rods can be locked after clamping to maintain the durability of the clamping force. Attached Figure Description

[0010] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of the invention.

[0011] Figure 1 A schematic diagram of the overall structure of the preferred embodiment of this application is shown.

[0012] Figure 2 The diagram shows the internal structure of the base and the clamping state of the parts in this application.

[0013] Figure 3 It shows Figure 2 A magnified view of a portion of point A in the middle.

[0014] Figure 4 A schematic diagram of the valve body and valve core is shown.

[0015] Figure 5 A cross-sectional view of this application is shown during the placement of the parts.

[0016] Figure 6 It shows Figure 5 A magnified view of a section at point B.

[0017] Figure 7 A cross-sectional view of this application is shown when the locking part is in place.

[0018] Figure 8 It shows Figure 7 A magnified view of a section at point C.

[0019] Figure 9 A schematic diagram of the clamping state of the irregularly shaped part is shown.

[0020] The markings in the diagram are: base-1, upper channel-11, lower channel-12, slide groove-13, countersunk hole-14, rectangular hole-141, valve body-2, through hole-21, connecting pipe-22, cylindrical hole-23, internal threaded pipe-24, worm gear-25, sealing ring-26, clamping rod-3, push rod-31, protrusion-32, control valve-4, valve core-5, external threaded section-51, worktable-6, drive motor-61, worm gear-62. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the implementation methods of the present invention will be described in detail below with reference to the accompanying drawings. However, the embodiments described in this invention are only some embodiments of the present invention, and not all embodiments.

[0022] like Figures 2 to 8 As shown, a clamping device for irregularly shaped plate-like parts includes: a base 1, a valve body 2, and a clamping rod 3.

[0023] The base 1 has an upper channel 11 and a lower channel 12 spaced apart along the normal direction. The upper channel 11 is located above the lower channel 12. The upper channel 11 and the lower channel 12 are connected to each other at their outer ends. The upper channel 11 is connected to a groove 13 at its middle end near the base 1. The length direction of the groove 13 is parallel to the axis of the upper channel 11. The upper channel 11, the lower channel 12 and the groove 13 are arranged in at least four sets along the circumference of the base 1. A countersunk hole 14 is opened in the middle of the bottom surface of the base 1. The lower channel 12 is connected to the countersunk hole 14 at its middle end near the base 1.

[0024] The valve body 2 is a cylindrical structure that rotates within the countersunk hole 14. At least four through holes 21 are arranged in a circumferential array on the valve body 2, each corresponding to a lower channel 12. All through holes 21 are interconnected at one end in the middle of the valve body 2. The area between adjacent through holes 21 on the outer wall of the valve body 2 is larger than the inner diameter of the lower channel 12, so that the lower channel 12 can be sealed by the outer wall of the valve body 2 during clamping. A connecting pipe 22 communicating with the through holes 21 is located in the middle of the bottom surface of the valve body 2. The connecting pipe 22 is connected to the hydraulic station via an oil pipe.

[0025] The number of clamping rods 3 is the same as the number of slide grooves 13. The clamping rods 3 are slidably disposed in the slide grooves 13 through their lower ends. The lower end of the clamping rods 3 is provided with a top rod 31 that is aligned with the normal direction of the base 1. The top rod 31 is coaxially inserted into the upper channel 11 corresponding to the slide groove 13. The outer wall of the top rod 31 and the inner wall of the upper channel 11 are sealed together. Specifically, the sealed connection can be achieved by setting an annular sealing ring. The outer side of the top surface of the clamping rods 3 is provided with a protrusion 32. In use, the top surface of the clamping rods 3 is used to support the bottom surface of the part, and the protrusion 32 is used to press the outer side of the part.

[0026] The operating principle of the clamping device is as follows: The first step is to place the parts, such as Figure 5 , Figure 6 As shown, when the control valve 4 is opened, the hydraulic oil in the upper channel 11, lower channel 12, and valve body 2 is not under pressure, and the upper channel 11, lower channel 12, and valve body 2 are interconnected. Therefore, the clamping rod 3 can be manually moved along the slide groove 13. By adjusting the position of the clamping rod 3, the top surface of the clamping rod 3 supports the bottom surface of the part, and the protrusion 32 is located on the outside of the part. Because the clamping rods 3 can move freely, each clamping rod 3 can be adapted to move to the part that needs to be clamped. Figure 9 As shown, when clamping irregularly shaped parts, the distance between each clamping rod 3 and the center of the base 1 will be different.

[0027] In another state, the upper channel 11, the lower channel 12 and the valve body 2 are all filled with hydraulic oil and have a certain pressure. However, since the through holes 21 are interconnected, and thus connect the upper channels 11 and the lower channels 12, in this state, when one of the clamping rods 3 is moved, the other clamping rods 3 can also be moved accordingly, so as to adjust the position of the part on the base 1 and adjust the clamping position between the clamping rods 3 and the part.

[0028] The second step is to start the hydraulic station. Hydraulic oil will be injected into the connecting pipe 22, through hole 21, lower channel 12 and upper channel 11 through the oil pipe. After the hydraulic oil enters the upper channel 11, it will apply pressure to the clamping rod 3 through the push rod 31. The pressure is directed towards the middle of the base 1. Since the protrusion 32 is located on the outside of the part, the pressure will drive the protrusion 32 to press against the outer wall of the part, thereby achieving the purpose of pressing the part.

[0029] The third step is to lock; as shown in the image. Figure 7 , Figure 8 As shown, rotating the valve body 2 closes the lower channel 12 by utilizing the solid portion between adjacent through holes 21 on the outer wall of the valve body 2, cutting off the connection between the lower channel 12 and the interior of the valve body 2. This maintains the pressure of the hydraulic oil in the upper channel 11 and the lower channel 12, preventing the hydraulic oil in the upper channel 11 and the lower channel 12 from depressurizing, thereby maintaining the clamping force on the parts. During the rotation of the valve body 2, the hydraulic station remains in a continuous state. After the valve body 2 closes the lower channel 12, the hydraulic station can be shut down to save energy and reduce noise.

[0030] Preferred, such as Figure 6 , Figure 8As shown, the valve body 2 has a cylindrical hole 23 inside, which is connected to the through hole 21 and the connecting pipe 22. The cylindrical hole 23 is used to buffer the hydraulic oil entering the valve body 2 to reduce the impact of the hydraulic oil on the push rod 31, so that the hydraulic oil pushes the push rod 31 more smoothly. In addition, a part of the hydraulic oil is stored inside the cylindrical hole 23, which can keep the pressure inside each set of lower channel 12 and upper channel 11 balanced, thereby ensuring that the clamping force of each clamping rod 3 on the parts is the same.

[0031] Further preferred, such as Figures 2 to 8 As shown, a control valve 4 is provided on the connecting pipe 22 for cutting off or connecting hydraulic oil. The top of the valve body 2 is coaxially provided with an internally threaded pipe 24. The bottom of the countersunk hole 14 is provided with a valve core 5 coaxial with the internally threaded pipe 24. The middle section of the valve core 5 is provided with an externally threaded section 51 that mates with the internally threaded pipe 24. When the valve body 2 rotates, the valve core 5 moves along the axis. The lower end of the valve core 5 passes through the top of the valve body 2. The outer wall of the lower end of the valve core 5 is sealed to the valve body 2. Before performing the locking operation, the connection between the valve body 2 and the hydraulic station is disconnected using the control valve 4, ensuring a fixed amount of hydraulic oil is maintained in the valve body 2, the lower channel 12, and the upper channel 11. Then, the valve body 2 is rotated. When the internal thread tube 24 is a right-hand thread, the valve body 2 is rotated to the right in the direction facing the bottom surface of the base 1. At this time, the valve core 5 can be moved into the valve body 2, and the lower end of the valve core 5 will be inserted into the cylindrical hole 23. This process disconnects the connection between the lower channel 12 and the cylindrical hole 23, and at the same time, the lower end of the valve core 5 further squeezes the space inside the cylindrical hole 23, thereby forcing the hydraulic oil to flow into each lower channel 12, thereby further increasing the pressure on the push rod 31 to enhance the clamping force on the parts. The valve body 2 is rotated until the lower channel 12 is closed. To release the parts, the valve body 2 is rotated in the opposite direction. The control valve 4 can be opened in advance or simultaneously with the rotation of the valve body 2 to quickly release the pressure of the hydraulic oil.

[0032] Preferred, such as Figure 3 , Figure 4 As shown, the upper section of the valve core 5 has a rectangular structure, and the bottom of the countersunk hole 14 has a rectangular hole 141 for the valve core 5 to pass through, so as to prevent the valve core 5 from rotating around the axis, thereby maintaining its function of moving along the axis.

[0033] Preferred, such as Figure 3 As shown, the external rotation of the internally threaded tube 24 is located within the base 1 to improve the installation stability of the valve body 2.

[0034] Preferred, such as Figure 1As shown, the base 1 is spaced apart on the top surface of the workbench 6. The top of the workbench 6 is equipped with a drive motor 61. The main shaft of the drive motor 61 is equipped with a worm gear 62. The outside of the connecting pipe 22 is coaxially equipped with a worm wheel 25 that meshes with the worm gear 62. The drive motor 61 can control the rotation of the valve body 2 through the connecting pipe 22. The structure of the worm gear 62 and the worm wheel 25 can effectively prevent the valve body 2 from rotating on its own, and can effectively ensure the clamping stability of the parts.

[0035] Preferred, such as Figure 2 As shown, sealing rings 26 are provided at positions above and below the lower channel 12 between the outer wall of the valve body 2 and the inner wall of the countersunk hole 14.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to be the only or limiting of the invention. Those skilled in the art should understand that various changes or equivalent substitutions made to the present invention without departing from its scope are all within the protection scope of the present invention.

Claims

1. A clamping device for irregularly shaped plate-like parts, characterized in that, include: Base (1), valve body (2) and clamping rod (3); The base (1) has an upper channel (11) and a lower channel (12) spaced apart along the normal direction. The upper channel (11) is located above the lower channel (12). The upper channel (11) and the lower channel (12) are connected to each other at one end on the outside of the base (1). The upper channel (11) is connected to a groove (13) at one end near the middle of the base (1). The length direction of the groove (13) is parallel to the axis of the upper channel (11). The upper channel (11), the lower channel (12) and the groove (13) are arranged in at least four sets along the circumference of the base (1). A countersunk hole (14) is opened in the middle of the bottom surface of the base (1). The lower channel (12) is connected to the countersunk hole (14). The valve body (2) is a cylindrical structure and is rotatably located in the countersunk hole (14). The valve body (2) has at least four through holes (21) arranged in a circumferential array for connecting to the lower channel (12). All the through holes (21) are connected to each other at one end of the middle part of the valve body (2). The area between the adjacent through holes (21) on the outer wall of the valve body (2) is larger than the inner diameter of the lower channel (12). The bottom surface of the valve body (2) is provided with a connecting pipe (22) that communicates with the through holes (21). The connecting pipe (22) is connected to the hydraulic station through an oil pipe. The number of clamping rods (3) is the same as the number of slide grooves (13). The clamping rods (3) are slidably installed in the slide grooves (13) through their lower ends. The lower end of the clamping rods (3) is provided with a top rod (31) that is aligned with the normal direction of the base (1). The top rod (31) is coaxially inserted in the upper channel (11) corresponding to the slide groove (13). The outer wall of the top rod (31) and the inner wall of the upper channel (11) are sealed together. The outer side of the top surface of the clamping rods (3) is provided with a protrusion (32). The valve body (2) has a cylindrical hole (23) inside, which is connected to the through hole (21) and the connecting pipe (22). The connecting pipe (22) is equipped with a control valve (4). The top of the valve body (2) is coaxially equipped with an internal threaded pipe (24). The bottom of the countersunk hole (14) is equipped with a valve core (5) coaxial with the internal threaded pipe (24). The middle section of the valve core (5) is equipped with an external threaded section (51) that mates with the internal threaded pipe (24). When locked, the valve body (2) rotates and uses the solid part between the adjacent through holes (21) on the outer wall of the valve body (2) to close the lower channel (12), cutting off the connection between the lower channel (12) and the inside of the valve body (2). At the same time, the valve core (5) moves along the axis. The lower end of the valve core (5) passes through the top of the valve body (2), and the outer wall of the lower end of the valve core (5) is sealed to the valve body (2).

2. The clamping device for irregularly shaped plate-like parts according to claim 1, characterized in that, The upper section of the valve core (5) is rectangular, and the bottom of the countersunk hole (14) is provided with a rectangular hole (141) for the valve core (5) to pass through.

3. The clamping device for irregularly shaped plate-like parts according to claim 1, characterized in that, The external rotation of the internally threaded tube (24) is located inside the base (1).

4. The clamping device for irregularly shaped plate-like parts according to claim 1, characterized in that, The base (1) is spaced on the top surface of a workbench (6). The top of the workbench (6) is equipped with a drive motor (61). The main shaft of the drive motor (61) is equipped with a worm (62). The outside of the connecting pipe (22) is coaxially equipped with a worm wheel (25) that meshes with the worm (62).

5. The clamping device for irregularly shaped plate-like parts according to claim 1, characterized in that, A sealing ring (26) is provided between the outer wall of the valve body (2) and the inner wall of the countersunk hole (14) at the positions above and below the lower channel (12).

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