Pressure clamping device

Abstract

The utility model discloses a pressure clamping device which comprises a clamping device body, a transmission shaft is arranged in the clamping device body, and one end of the transmission shaft is fixedly connected with a motor rotating shaft of the device body. The clamping device body is further provided with a first air inlet and outlet channel and a second air inlet and outlet channel, and the first air inlet and outlet channel and the second air inlet and outlet channel are used for being matched with the pressure movable assembly to move. The clamping rotating chuck is further provided with a plurality of clamping sliding grooves. The pressure moving assembly is used for driving the clamping jaw to clamp the workpiece. The pressure movable assembly is not provided with a gas distribution ring, so that the pressure clamping device can rotate during clamping, the problem that the gas distribution ring needs to be replaced is solved, and the clamping force and precision are improved. When the pressure clamping device needs to adapt to workpieces of different specifications, the clamping jaw can slide in the clamping sliding groove by adjusting the screw, and after the clamping jaw is adjusted to a proper position, the clamping jaw is fixed in the clamping sliding groove, so that the pressure clamping device can adapt to the workpieces of different specifications.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of clamping device especially relates to a pressure clamping device. BACKGROUND

[0002] Clamping device is often used in the processing process, and the workpiece to be processed is clamped by the clamping device for cutting and other machining work in the rotating process.

[0003] The clamping device on the market needs to replace the corresponding jaw to clamp different specifications of workpieces when clamping workpieces of different diameters, which reduces the processing efficiency.

[0004] Some clamping devices clamp workpieces through spring sleeves, and the clamping force of such devices is small, and the clamping device is prone to loose clamping when rotating, and the spring sleeve also causes low clamping precision.

[0005] And some clamping devices with gas distribution rings cannot rotate the chuck during clamping, and the gas distribution ring needs to be replaced after a period of use. INVENTION CONTENTS

[0006] The utility model aims at providing a pressure clamping device to solve the problem that some clamping devices need to replace the jaw to adapt to workpieces of different sizes, the device clamped by the spring sleeve causes small clamping force and low precision, and the clamping device with the gas distribution ring cannot rotate the chuck and needs to replace the gas distribution ring.

[0007] To solve the above problems, the utility model provides a pressure clamping device, which comprises a clamping device body, a transmission shaft is arranged in the clamping device body, one end of the transmission shaft is fixedly connected with the motor rotating shaft of the device body, the motor is used for driving the transmission shaft to rotate, the other end of the transmission shaft is fixedly connected with a clamping rotary chuck, and the transmission shaft is used for driving the clamping rotary chuck to rotate.

[0008] A first inlet and outlet air passage and a second inlet and outlet air passage are further arranged on the clamping device body, and the first inlet and outlet air passage and the second inlet and outlet air passage are used for cooperating with the movement of the pressure movable assembly.

[0009] A plurality of clamping sliding grooves are further arranged on the clamping rotary chuck, a jaw is detachably connected in the clamping sliding groove through a clamping screw, the jaw is in sliding connection with the clamping sliding groove when the clamping screw is not fastened, the jaw is in fixed connection with the clamping sliding groove when the clamping screw is fastened, and the pressure movable assembly is used for clamping the workpiece by the jaw.

[0010] Further, the pressure movable assembly comprises a pressure piston, the pressure piston comprises a piston head and a piston rod, and the piston head is fixedly connected with the piston rod.

[0011] Further, one side of the piston head is in contact with the gas in the first gas inlet and outlet channel; the other side of the piston head and the piston rod are in contact with the gas in the second gas inlet and outlet channel.

[0012] Further, the piston rod is further fixedly connected with a pushing block, and the pushing block is in sliding connection with the clamping device body.

[0013] Further, the pushing block is in sliding connection with a wedge-shaped block, the inclined surface of the wedge-shaped block is in sliding connection with the pushing block, and the surface connected between the pushing block and the wedge-shaped block is an inclined surface.

[0014] The end of the wedge-shaped block away from the pushing block is in sliding connection with a clamping sliding block, and the side of the clamping sliding block close to the clamping device body is provided with a sliding block pushing groove, and the wedge-shaped block is arranged in the sliding block pushing groove.

[0015] The clamping sliding block is in sliding connection with the clamping rotating chuck.

[0016] The clamping sliding block is provided with a clamping sliding groove.

[0017] Further, the clamping jaw is provided with a fixed screw hole, and a clamping screw is arranged in the fixed screw hole.

[0018] Further, one interface of a gas assembly of the first gas inlet and outlet channel is connected with another interface of the gas assembly of the second gas inlet and outlet channel, the gas assembly is used for gas inlet or outlet of the first gas inlet and outlet channel, and the gas assembly is used for gas inlet or outlet of the second gas inlet and outlet channel.

[0019] The pressure clamping device has the advantages that, compared with the prior art, the first gas inlet and outlet channel and the second gas inlet and outlet channel are arranged on the clamping device body and are used for cooperating with the movement of the pressure movable assembly, the pressure movable assembly cancels the gas distribution ring, the pressure movable assembly drives the clamping jaw to clamp the workpiece, the pressure movable assembly is not provided with the gas distribution ring, the pressure clamping device can rotate during clamping, the problem of needing to replace the gas distribution ring is solved, and the clamping force and accuracy are improved. When different specifications of workpieces need to be matched, the clamping jaw can slide in the clamping sliding groove by adjusting the screw, the clamping jaw is fixed in the clamping sliding groove after being adjusted to the appropriate position, and the pressure clamping device can adapt to different specifications of workpieces. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a sectional view of the pressure clamping device.

[0021] Fig. 2 It is a front view of the pressure clamping device. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the utility model, the following will be combined with the attached Figs. 1-2 The utility model discloses a pressure clamping device for further detailed description.

[0023] As Figs. 1-2 The utility model discloses a pressure clamping device, including clamping device body 100, be provided with transmission shaft 300 in this clamping device body 100.The one end of transmission shaft 300 is fixedly connected with the motor rotating shaft of device body, and the motor is used to drive transmission shaft 300 to rotate.The other end of transmission shaft 300 is fixedly connected with clamping rotary chuck 400, and transmission shaft 300 is used to drive clamping rotary chuck 400 to rotate.The first inlet and outlet gas passage 110 and second inlet and outlet gas passage 120 are still provided on clamping device body 100, and the first inlet and outlet gas passage 110 and second inlet and outlet gas passage 120 are used to cooperate pressure movable assembly movement.The clamping sliding groove 442 is still provided on clamping rotary chuck 400, and the clamping jaw 410 is detachably connected in the clamping sliding groove 442 through clamping screw 430, the clamping jaw 410 is slidably connected with clamping sliding groove 442 when clamping screw 430 is not fastened, the clamping jaw 410 is fixedly connected with clamping sliding groove 442 when clamping screw 430 is fastened, and pressure movable assembly is used to drive the clamping jaw to clamp workpiece.

[0024] In the utility model, pressure movable assembly contains pressure piston 210, and pressure piston 210 includes piston head 211 and piston rod 212, and piston head 211 is fixedly connected with piston rod 212.The side of piston head 211 is contacted with the gas in first inlet and outlet gas passage 110;The other side of piston head 211 and piston rod 212 are contacted with the gas in second inlet and outlet gas passage 120.Piston rod 212 is also fixedly connected with push block 220, and push block 220 is slidably connected with clamping device body 100.

[0025] Push block 220 is slidably connected with wedge block 230, and the inclined surface of wedge block 230 is slidably connected with push block 220, and the surface connected with push block 220 of wedge block 230 is inclined surface.The end, away from push block 220 of wedge block 230, is slidably connected in clamping sliding block 440, and the side, close to clamping device body 100 of clamping sliding block 440, is provided with sliding block push groove 441, and wedge block 230 is arranged in sliding block push groove 441.Clamping sliding block 440 is slidably connected with clamping rotary chuck 400, and clamping sliding groove 442 is arranged on clamping sliding block 440.

[0026] It can be understood that the fixed screw hole 420 is arranged on the clamping jaw 410, and the clamping screw 430 is arranged in the fixed screw hole 420.

[0027] Need to explain, the first access of the gas assembly 500 of the first gas passage 110, the second gas passage 120 is connected with the other interface of the gas assembly 500, the gas assembly 500 is used to the first gas passage 110 gas inlet or outlet, the gas assembly 500 is used to the second gas passage 120 gas inlet or outlet.

[0028] In use, if the workpiece needs to be clamped, the gas assembly is used to continuously input gas with a certain pressure into the first gas passage 110, and the gas in the second gas passage 120 is discharged.

[0029] After the first gas passage 110 is input with a certain pressure, the pressure piston 210 is pushed to slide in the opposite direction of the first gas passage 110, and the gas in the second gas passage 120 is discharged, which is more conducive to the sliding of the pressure piston 210. One end of the piston rod 212 of the pressure piston 210 is connected with the push block 220 and the pressure piston 210 slides together. The sliding of the push block 220 to the clamping rotary chuck 400 direction will extrude the wedge block 230 to slide downward. Because one end of the wedge block 230 is arranged in the sliding block push groove 441, the downward sliding of the wedge block 230 will push the clamping sliding block 440 to slide on the clamping rotary chuck 400, and at this time the clamping sliding block 440 slides to the center of the clamping rotary chuck 400. The clamping jaw 410 is fixed in the clamping sliding block 440, so that the clamping jaw 410 moves to the center of the clamping rotary chuck 400. Because a plurality of clamping sliding blocks 440 are arranged on the clamping rotary chuck 400, a plurality of clamping jaws 410 will simultaneously move to the center of the clamping rotary chuck 400, thereby realizing the clamping of the workpiece. The process uses gas to promote, which can adjust the clamping force of the clamping jaw 410 by adjusting other pressure, realizing the purpose of high clamping force and high clamping precision. Because the gas in the first gas passage 110 and the second gas passage 120 is not affected when flowing, the clamping can be maintained when the chuck rotates.

[0030] If the workpiece needs to be released, the gas assembly 500 needs to stop maintaining the pressure of the gas in the first gas passage 110, and if the workpiece needs to be released quickly, the gas assembly 500 can also input gas into the second gas passage 120 to promote the movement of the pressure piston 210 to the direction of the first gas passage 110, that is, to the direction away from the clamping rotary chuck 400.

[0031] The clamping sliding groove 442 is arranged on the clamping sliding block 400, and the clamping jaw 410 is arranged in the clamping sliding groove 442. When different specifications of workpieces need to be clamped, the clamping jaw 410 is fixed by rotating the clamping screw 430 in the fixed screw hole 420, so that the clamping jaw 410 can slide in the clamping sliding groove 442. When the clamping jaw 410 is adjusted to the appropriate position, the clamping jaw 410 is fixed on the clamping sliding block 400 by the clamping screw 430. Therefore, the pressure clamping device can adapt to different specifications of workpieces without replacing the clamping jaw 410.

[0032] In an embodiment, the clamping sliding groove 442 is a dovetail groove structure, and an abutting block is further arranged between the clamping sliding groove 442 and the clamping jaw 410. The abutting block is abutted and fixed with the clamping sliding groove 442 by rotating the clamping screw 430, so that the clamping jaw 410 is fixed on the clamping sliding block 400.

[0033] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A pressure clamping device, characterized in that The utility model provides a clamping device, comprising a clamping device body (100), a transmission shaft (300) is arranged in the clamping device body (100), one end of the transmission shaft (300) is fixedly connected with the motor rotating shaft of the device body, the motor is used to drive the transmission shaft (300) to rotate, the other end of the transmission shaft (300) is fixedly connected with a clamping rotary chuck (400), and the transmission shaft (300) is used to drive the clamping rotary chuck (400) to rotate. The clamping device body (100) is further provided with a first inlet and outlet air passage (110) and a second inlet and outlet air passage (120), and the first inlet and outlet air passage (110) and the second inlet and outlet air passage (120) are used to cooperate with the pressure movable assembly to move. The clamping rotary chuck (400) is further provided with a plurality of clamping sliding grooves (442), a clamping jaw (410) is detachably connected in the clamping sliding groove (442) through a clamping screw (430), the clamping jaw (410) is slidably connected with the clamping sliding groove (442) when the clamping screw (430) is not fastened, the clamping jaw (410) is fixedly connected with the clamping sliding groove (442) when the clamping screw (430) is fastened, and the pressure movable assembly is used to drive the clamping jaw to clamp a workpiece.

2. The pressure clamping device according to claim 1, characterized in that The pressure movable assembly comprises a pressure piston (210), and the pressure piston (210) comprises a piston head (211) and a piston rod (212), wherein the piston head (211) is fixedly connected with the piston rod (212).

3. The pressure clamping device according to claim 2, characterized in that One side of the piston head (211) is in contact with gas in the first inlet and outlet air passage (110), and the other side of the piston head (211) and the piston rod (212) are in contact with gas in the second inlet and outlet air passage (120).

4. The pressure clamp of claim 3, wherein The piston rod (212) is further fixedly connected with a pushing block (220), and the pushing block (220) is slidably connected with the clamping device body (100).

5. The pressure clamp of claim 4, wherein The pushing block (220) is slidably connected with a wedge-shaped block (230), the inclined surface of the wedge-shaped block (230) is slidably connected with the pushing block (220), and the surface connected between the pushing block (220) and the wedge-shaped block (230) is an inclined surface. One end of the wedge-shaped block (230) away from the pushing block (220) is slidably connected with a clamping sliding block (440), one side of the clamping sliding block (440) close to the clamping device body (100) is provided with a sliding block pushing groove (441), and the wedge-shaped block (230) is arranged in the sliding block pushing groove (441). The clamping sliding block (440) is slidably connected with the clamping rotary chuck (400). The clamping sliding groove (442) is arranged on the clamping sliding block (440).

6. The pressure clamp of claim 5, wherein The clamping jaw (410) is provided with a fixed screw hole (420), and the clamping screw (430) is arranged in the fixed screw hole (420).

7. The pressure clamp of claim 6, wherein One interface of the first gas inlet / outlet channel (110) gas assembly (500) is connected with the other interface of the second gas inlet / outlet channel (120) gas assembly (500), and the gas assembly (500) is used for gas inlet or outlet of the first gas inlet / outlet channel (110), and the gas assembly (500) is used for gas inlet or outlet of the second gas inlet / outlet channel (120).

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