Special-shaped plate-shaped part clamping device

Abstract

The invention provides a special-shaped plate-shaped part clamping device. The special-shaped plate-shaped part clamping device comprises a base, a valve body and a clamping rod. The base is provided with upper channels and lower channels in the normal direction, the tail ends of the upper channels are communicated with the tail ends of the lower channels, the front ends of the upper channels are communicated with sliding grooves, at least four sets of upper channels, lower channels and sliding grooves are arranged in a circumferential array mode, a counter bore is formed in the middle of the bottom face of the base, and the lower channels are all communicated with the counter bore. The valve body is rotationally arranged in the counter bore, at least four through holes are formed in the valve body in a circumferential array mode, all the through holes are communicated with one another, a connecting pipe communicated with the through holes is arranged on the bottom face of the valve body, and the connecting pipe is connected with a hydraulic station. The number of the clamping rods is consistent with that of the sliding grooves, the lower ends of the clamping rods are arranged in the sliding grooves in a sliding mode, ejector rods are arranged at the lower ends of the clamping rods and penetrate through the upper channels corresponding to the sliding grooves, the outer walls of the ejector rods are connected with the inner walls of the upper channels in a sealed mode, and protruding blocks are arranged on the outer sides of the top faces of the clamping rods. The special-shaped part clamping device can adapt to clamping of various special-shaped parts and has high disassembling and assembling efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of clamps, and in particular relates to a clamping device for special-shaped plate-shaped parts. Background Art

[0002] In the processing of mechanical parts, it is often necessary to inspect and deburr various types of holes, slots and other structures. In order to facilitate operation, the parts usually need to be suspended in the air so that the hole diameter can be inspected using go gauges and stop gauges, and the holes and slots that penetrate the structure can be deburred.

[0003] Most of the existing clamping devices use three or four jaws to clamp parts, and there are two main ways to move the jaws. One is to use the same drive mechanism to synchronously drive multiple jaws. Although the overall structure is simple, this structure is only suitable for parts with relatively regular appearance and structure, such as circles and squares; the other is to provide a drive mechanism for each jaw. Traditional drive structures include screw transmission, cam clamping, etc. Although they can adapt to clamping parts with special-shaped outer contours, such as right-angled trapezoids, hexagons with unequal distances between opposite sides, ellipses, etc., the overall structure of this structure is relatively complex. Multiple drive mechanisms need to be operated during clamping and loosening, and the clamping process is relatively cumbersome. Summary of the invention

[0004] In order to solve the deficiencies of the prior art, the present invention provides a special-shaped plate-like parts clamping device, which can adapt to the clamping of various special-shaped parts and has a high disassembly and assembly efficiency.

[0005] In order to achieve the purpose of the present invention, the following scheme is proposed: A clamping device for special-shaped plate-shaped parts comprises a base, a valve body and a clamping rod.

[0006] The base is provided with an upper channel and a lower channel spaced apart from each other along the normal direction, the upper channel is located above the lower channel, and the upper channel and the lower channel are connected to each other at one end located on the outer side of the base, and the end of the upper channel close to the middle of the base is connected to a slide groove, and the length direction of the slide groove is parallel to the axis of the upper channel. At least four groups of upper channels, lower channels and slide grooves are arranged in a circular array along the base, a countersunk hole is provided in the middle of the bottom surface of the base, and the lower channels are all connected to the countersunk hole.

[0007] The valve body is a cylindrical structure, which is rotatably arranged in the countersunk hole. The valve body is provided with at least four through holes along a circumferential array for connecting to the lower channel. All the through holes are connected to each other at one end located in the middle of the valve body. The area between adjacent through holes corresponding to the outer wall of the valve body is larger than the inner diameter of the lower channel. A connecting pipe connected to the through hole is provided in the middle of the bottom surface of the valve body, and the connecting pipe is connected to the hydraulic station through an oil pipe.

[0008] The number of clamping rods is consistent with the number of slide grooves. The clamping rod is slidably arranged in the slide groove by the lower end. The lower end of the clamping rod is provided with a push rod consistent with the normal direction of the base. The push rod is coaxially inserted into the upper channel corresponding to the slide groove. The outer wall of the push rod is sealed with the inner wall of the upper channel, and a protrusion is provided on the outer side of the top surface of the clamping rod.

[0009] The beneficial effects of the present invention are as follows: in the process of placing and clamping parts, each clamping tube can be moved individually to adapt to parts of different shapes; however, when clamping parts, multiple clamping rods can be pressed against the parts synchronously and the same clamping force can be maintained, with a faster clamping speed, and when removing parts, multiple push rods can be quickly and synchronously depressurized to achieve the purpose of rapid release; at the same time, the clamping rods can be locked after clamping to maintain the durability of the clamping force. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0011] Figure 1 The overall structural diagram of the preferred embodiment of the present application is shown.

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

[0013] Figure 3 Shows Figure 2 A partial enlarged view of point A in the middle.

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

[0015] Figure 5 A cross-sectional view of the present application is shown during the process of placing a part.

[0016] Figure 6 Shows Figure 5 A partial enlarged view of point B in the middle.

[0017] Figure 7 A cross-sectional view of the present application showing the locking features.

[0018] Figure 8 Shows Figure 7 A partial enlarged view of point C in the middle.

[0019] Fig. 9 A schematic diagram of the clamping state of the special-shaped parts of the present application is shown.

[0020] Markings in the figure: 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, bump-32, control valve-4, valve core-5, external threaded section-51, workbench-6, drive motor-61, worm-62. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the implementation modes of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

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

[0023] The base 1 is provided with an upper channel 11 and a lower channel 12 spaced apart from each other 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 located on the outer side of the base 1. The end of the upper channel 11 close to the middle of the base 1 is connected to a slide groove 13. The length direction of the slide groove 13 is parallel to the axis of the upper channel 11. At least four groups of upper channels 11, lower channels 12 and slide grooves 13 are arranged in a circular array along the base 1. A countersunk hole 14 is provided in the middle of the bottom surface of the base 1, and the end of the lower channel 12 close to the middle of the base 1 is connected to the countersunk hole 14.

[0024] The valve body 2 is a cylindrical structure, which is rotatably arranged in the counterbore 14. The valve body 2 is provided with at least four through holes 21 along the circumference array, and the through holes 21 correspond to the lower channel 11 one by one. All through holes 21 are connected to each other at one end located in the middle of the valve body 2, and the area between the outer wall of the valve body 2 corresponding to the adjacent through holes 21 is larger than the inner diameter of the lower channel 12, so that the lower channel 12 can be closed by the outer wall of the valve body 2 when clamping. A connecting pipe 22 connected to the through hole 21 is provided in the middle of the bottom surface of the valve body 2, and the connecting pipe 22 is connected to the hydraulic station through an oil pipe.

[0025] The number of clamping rods 3 is consistent with the number of slide grooves 13. The clamping rod 3 is slidably arranged in the slide groove 13 through the lower end. The lower end of the clamping rod 3 is provided with a push rod 31 which is consistent with the normal direction of the base 1. The push rod 31 is coaxially penetrated in the upper channel 11 corresponding to the slide groove 13. The outer wall of the push rod 31 and the inner wall of the upper channel 11 are sealed. Specifically, the sealed connection structure can be achieved by setting an annular sealing ring. A protrusion 32 is provided on the outer side of the top surface of the clamping rod 3. When in use, the top surface of the clamping rod 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 principle of use of the clamping device is as follows: The first step is to place the parts, such as Figure 5 , Figure 6 As shown, the control valve 4 is opened at this time, and the hydraulic oil in the upper channel 11, the lower channel 12 and the valve body 2 is not under pressure, and the upper channel 11, the lower channel 12 and the valve body 2 are interconnected, so 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 rod 3 can be moved at will, each clamping rod 3 can be adaptively moved to the part that needs to be clamped. Fig. 9 As shown, when clamping a special-shaped part, 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 inside of the valve body 2 are filled with hydraulic oil and have a certain pressure. However, since the through holes 21 are interconnected, and thus each group of channels 11 and the lower channel 12 are connected, in this state, when one of the clamping rods 3 is moved, the other clamping rods 3 can also move accordingly, so as to adjust the position of the part on the base 1 and adjust the clamping position between the clamping rod 3 and the part.

[0028] The second step is to start the hydraulic station. The hydraulic oil will be injected into the connecting pipe 22, the through hole 21, the lower channel 12 and the 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 toward the middle of the base 1. At this time, since the protrusion 32 is located on the outside of the part, the pressure will drive the protrusion 32 to be pressed against the outer wall of the part, thereby achieving the purpose of pressing the part.

[0029] The third step is locking; Figure 7 , Figure 8 As shown, the valve body 2 is rotated, and the lower channel 12 is closed by using the solid part between the adjacent through holes 21 on the outer wall of the valve body 2, and the connection between the lower channel 12 and the inside of the valve body 2 is cut off, so that the hydraulic oil in the upper channel 11 and the lower channel 12 maintains pressure, prevents the hydraulic oil in the upper channel 11 and the lower channel 12 from being depressurized, and then maintains the clamping force on the parts. During the rotation of the valve body 2, the hydraulic station is still in a continuous shared state; when the valve body 2 closes the lower channel 12, the hydraulic station can be shut down to save energy and reduce noise.

[0030] Preferably, Figure 6 , Figure 8As shown, the valve body 2 has a cylindrical hole 23 inside, and the cylindrical hole 23 is connected with 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 can push the push rod 31 more smoothly. In addition, a part of the hydraulic oil will be stored inside the cylindrical hole 23, so that the pressure inside each group of lower channels 12 and upper channels 11 can be balanced, thereby ensuring that the clamping force between each pair of parts of the clamping rod 3 is the same.

[0031] Further preferably, Figures 2 to 8 As shown, a control valve 4 is provided on the connecting pipe 22 for cutting off or connecting the hydraulic oil, an internal threaded tube 24 is coaxially provided on the top of the valve body 2, a valve core 5 coaxial with the internal threaded tube 24 is passed through the bottom of the counterbore 14, and an external threaded section 51 cooperating with the internal threaded tube 24 is provided in the middle section of the valve core 5. When the valve body 2 rotates, the valve core 5 moves along the axis, and 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 and connected to the valve body 2. Before the locking operation is performed, the control valve 4 is used to cut off the connection between the valve body 2 and the hydraulic station, so that a certain amount of hydraulic oil is maintained in the valve body 2 and the lower passage 12 and the upper passage 11 of the partition; then the valve body 2 is rotated, and when the internal threaded tube 24 is a right-handed thread, the valve body 2 is rotated rightward in the direction facing the bottom surface of the base 1, and the valve core 5 can be moved into the inside of the valve body 2, and the lower end of the valve core 5 will be inserted into the cylindrical hole 23. In this process, while cutting off the connection between the lower passage 12 and the cylindrical hole 23, the lower end of the valve core 5 will be used to further squeeze the space inside the cylindrical hole 23, thereby forcing the hydraulic oil to flow into each lower passage 12, thereby further increasing the pressure on the push rod 31 to enhance the clamping force on the parts, and the valve body 2 is rotated until the lower passage 12 is closed; when releasing the parts, the valve body 2 can be rotated in the opposite direction, and the control valve 4 can be opened in advance, or it can be opened synchronously with the rotation of the valve body 2, so that the pressure of the hydraulic oil can be quickly released.

[0032] Preferably, Figure 3 , Figure 4 As shown, the upper section of the valve core 5 is a rectangular structure, and a rectangular hole 141 for penetrating the valve core 5 is opened at the bottom of the counterbore 14 to prevent the valve core 5 from rotating around the axis, thereby maintaining the function of moving along the axis.

[0033] Preferably, Figure 3 As shown, the outer portion of the internal threaded tube 24 is rotatably arranged in the base 1 to improve the installation stability of the valve body 2 .

[0034] Preferably, Figure 1As shown, the base 1 is spaced apart on the top surface of a workbench 6, a driving motor 61 is provided on the top of the workbench 6, a worm 62 is provided on the main shaft of the driving motor 61, a worm wheel 25 meshing with the worm 62 is coaxially provided on the outside of the connecting tube 22, the driving motor 61 can control the rotation of the valve body 2 through the connecting tube 22, and the transmission structure of the worm 62 and the worm wheel 25 can effectively prevent the valve body 2 from rotating by itself, and can effectively ensure the clamping stability of the parts.

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

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

Claims

1. A clamping device for special-shaped plate-shaped parts, characterized in that: include: A base (1), a valve body (2) and a clamping rod (3); The base (1) is provided with an upper channel (11) and a lower channel (12) spaced apart from each other along the normal direction, the upper channel (11) being located above the lower channel (12), the upper channel (11) and the lower channel (12) being connected to each other at one end located outside the base (1), the upper channel (11) being connected to a slide groove (13) at one end close to the middle of the base (1), the length direction of the slide groove (13) being parallel to the axis of the upper channel (11), at least four groups of upper channels (11), lower channels (12) and slide grooves (13) being arranged in a circular array along the base (1), a countersunk hole (14) being provided in the middle of the bottom surface of the base (1), and the lower channels (12) being connected to the countersunk hole (14); The valve body (2) is a cylindrical structure, which is rotatably arranged in the counterbore (14). The valve body (2) is provided with at least four through holes (21) along a circumferential array for connecting to the lower channel (12). All the through holes (21) are connected to each other at one end located in the middle of the valve body (2). The area between adjacent through holes (21) corresponding to the outer wall of the valve body (2) is larger than the inner diameter of the lower channel (12). A connecting pipe (22) connected to the through hole (21) is provided in the middle of the bottom surface of the valve body (2). The connecting pipe (22) is connected to the hydraulic station through an oil pipe. The number of the clamping rods (3) is consistent with the number of the slide grooves (13). The clamping rods (3) are slidably arranged in the slide grooves (13) through the lower ends. The lower ends of the clamping rods (3) are provided with a push rod (31) which is consistent with the normal direction of the base (1). The push rod (31) is coaxially inserted into the upper channel (11) corresponding to the slide groove (13). The outer wall of the push rod (31) is sealed with the inner wall of the upper channel (11). A protrusion (32) is provided on the outer side of the top surface of the clamping rod (3).

2. A device for clamping special-shaped plate-shaped parts according to claim 1, characterized in that: The valve body (2) has a cylindrical hole (23) inside, and the cylindrical hole (23) is communicated with the through hole (21) and the connecting pipe (22).

3. A device for clamping special-shaped plate-shaped parts according to claim 2, characterized in that: A control valve (4) is provided on the connecting pipe (22), an internally threaded pipe (24) is coaxially provided on the top of the valve body (2), a valve core (5) coaxial with the internally threaded pipe (24) is passed through the bottom of the counterbore (14), an externally threaded section (51) matching with the internally threaded pipe (24) is provided in the middle section of the valve core (5), and 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), and the outer wall of the lower end of the valve core (5) is sealed and connected to the valve body (2).

4. A device for clamping special-shaped plate-shaped parts according to claim 3, characterized in that: The upper section of the valve core (5) is a rectangular structure, and a rectangular hole (141) for passing the valve core (5) is provided at the bottom of the counterbore (14).

5. The device for clamping special-shaped plate-shaped parts according to claim 3, characterized in that: The outer portion of the internally threaded tube (24) is rotatably disposed within the base (1).

6. The device for clamping special-shaped plate-shaped parts according to claim 1, characterized in that: The base (1) is spaced apart from the top surface of a workbench (6), a driving motor (61) is provided on the top of the workbench (6), a main shaft of the driving motor (61) is provided with a worm (62), and a worm wheel (25) meshing with the worm (62) is coaxially provided on the outside of the connecting pipe (22).

7. The device for clamping special-shaped plate-shaped parts according to claim 1, characterized in that: Sealing rings (26) are provided between the outer wall of the valve body (2) and the inner wall of the counterbore (14) at positions above and below the lower channel (12).

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