Turning clamping device

Abstract

The utility model relates to the technical field of machining, and discloses a turning clamping device which comprises a base, a clamping mechanism is arranged at the top of the base and used for clamping a workpiece, and a replacing mechanism is arranged at the top of the base and used for replacing a clamp. The clamping mechanism comprises fixing blocks, the two fixing blocks are fixedly connected to the left side and the right side of the middle of the top wall of the base, threaded rods penetrate through the left side and the right side of the outer wall of each fixing block, bearings are fixedly connected to the adjacent ends of the outer walls of the two threaded rods, and clamping arms are fixedly connected to the outer walls of the bearings. A workpiece is arranged between the clamping jaws, the rotary knob drives the threaded rod to rotate, movement is achieved through threaded transmission, the threaded rod pushes the clamping arms and the idler wheels to reduce friction in the sliding grooves, the workpiece is clamped or loosened, accurate control is achieved by adjusting the rotation amount of the rotary knob, and it is guaranteed that clamping force is evenly distributed.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a turning clamping device. Background Technology

[0002] Turning clamping devices are specialized process equipment used in the field of machining to fix workpieces during turning, ensure that they maintain the correct position and posture relative to the lathe spindle, and withstand cutting forces and vibration loads during machining. Their core function is to ensure the machining accuracy of workpieces through reliable positioning and clamping, while improving machining efficiency and safety.

[0003] A search revealed Chinese Patent Publication No. CN217453088U, which discloses a clamping device for a three-pin turning machine tool for automobiles. The device includes a base with multiple clamping units arranged in a circular array on the top of the base. Each clamping unit includes a support rod fixed to the top of the base, with a through-hole on the support rod. A movable plate is located on one side of the support rod, with an anti-slip pad fixedly connected to the movable plate. Two spaced guide rods are fixedly mounted on the movable plate, passing through the support rod. A rack is fixedly mounted on the movable plate, passing through the through-hole. A rotating shaft is rotatably mounted inside the through-hole, with a gear fixedly mounted on the shaft. The device also includes a drive mechanism. By using an independently set hydraulic cylinder as the drive source, the cost of the clamping device is reduced. Furthermore, the output distance of the hydraulic cylinder does not require equal control, further reducing the cost. However, when clamping printer rollers and high-precision workpieces, the three-jaw chuck is prone to uneven clamping force and excessive vibration, affecting machining accuracy and surface quality. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a turning clamping device, which aims to improve the problem that the existing three-jaw chuck is prone to uneven clamping force and large vibration when clamping printer rollers and high-precision workpieces, thus affecting the machining accuracy and surface quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a turning clamping device, comprising a base, a clamping mechanism for clamping a workpiece is provided on the top of the base, and a replacement mechanism for replacing a fixture is provided on the top of the base; the clamping mechanism includes a fixing block, two fixing blocks are fixedly connected to the left and right sides of the middle of the top wall of the base, threaded rods are passed through the left and right sides of the outer wall of the fixing block, bearings are fixedly connected to adjacent ends of the outer walls of the two threaded rods, clamping arms are fixedly connected to the outer walls of the bearings, and grippers are provided on adjacent sides of the outer walls of the two clamping arms; a driving assembly is provided on the top of the base, and a moving assembly is provided on the top wall of the base.

[0006] Through the above technical solution: the clamping mechanism is responsible for fixing the workpiece, while the replacement mechanism is used to replace the clamp. The threaded rod moves and pushes the clamping arm to move by rotating on the bearing. The slider at the bottom of the clamping arm slides in the groove to complete the clamping or releasing action of the jaws on the workpiece. The jaws are made of high-strength alloy steel and the surface is hardened to improve wear resistance.

[0007] As a further description of the above technical solution:

[0008] The drive assembly includes a knob, which is fixedly connected to the end of the outer wall of the threaded rod, and the outer wall of the knob is provided with protective grooves.

[0009] The above technical solution involves a knob that rotates a threaded rod, with protective grooves used to increase friction.

[0010] As a further description of the above technical solution:

[0011] The moving component includes a slider, the top wall of which is fixedly connected to the bottom wall of the clamping arm. The bottom wall of the base has a groove, and the slider is disposed inside the groove.

[0012] With the above technical solution, the slider under the clamping arm slides within the groove.

[0013] As a further description of the above technical solution:

[0014] The replacement mechanism includes two sliders, both of which are fixedly connected to the middle of the outer walls of the two grippers on opposite sides. Each of the outer walls of the two gripping arms has a groove on one of their adjacent sides. The sliders are slidably connected to the grooves. A locking block is fixedly connected to the top wall of each slider. A groove block is fixedly connected to the rear side of the top wall of each gripping arm. A sliding plate is provided on the inner side of the outer wall of the groove block. A slot is provided on the front side of the top wall of the sliding plate, engaging with the locking block. An installation hole is provided on the rear side of the top wall of each slider. A bolt is threaded onto the top wall of the sliding plate. An elastic component is provided on the top of the base.

[0015] The above technical solution involves loosening the bolts to release the locking between the slide plate and the second slider during the replacement of the gripper. Then, the slide plate is slid backward to disengage the slot from the block. At this time, the second slider can slide freely on the second slot, and the gripper can be pulled out from the clamping arm to meet the processing needs of different workpieces.

[0016] As a further description of the above technical solution:

[0017] The elastic component includes springs, and multiple springs are fixedly connected to adjacent sides of the outer walls of the two grippers, with rubber pads fixedly connected to the ends of the multiple springs.

[0018] The above technical solution provides a buffering effect with the springs and rubber pads on the grippers when clamping the workpiece, preventing rigid contact between the grippers and the workpiece, thus avoiding damage to the workpiece, and ensuring clamping stability by increasing friction.

[0019] As a further description of the above technical solution:

[0020] The threaded rod is threaded to the middle of the outer wall of the fixed block, and the two bearings are fixedly connected to the middle of the outer walls of the two clamping arms on opposite sides.

[0021] Through the above technical solution: the threaded rod rotates in the middle of the fixed block, and the bearing is used to reduce the friction between the threaded rod and the clamping arm when the threaded rod rotates, so that the rotation of the threaded rod is smoother.

[0022] As a further description of the above technical solution:

[0023] Rollers are provided on the top left and right sides of the base. The slider is fixedly connected to the adjacent side of the outer wall of the two rollers, and the rollers are slidably connected to the slide groove.

[0024] The above technical solution uses rollers to reduce sliding friction, making the slider move smoothly within the groove.

[0025] As a further description of the above technical solution:

[0026] The sliding plate is slidably connected to the inner side of the outer wall of the slide block, and the sliding plate is threadedly connected to the mounting hole by bolts.

[0027] The above technical solution involves using a sliding block to slide the slide plate and bolts to further secure the slide plate to the gripper.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the workpiece is placed between the clamping jaws, and the knob drives the threaded rod to rotate, thereby achieving movement through threaded transmission. The threaded rod pushes the clamping arm, and the roller reduces friction in the slide groove, thereby clamping or releasing the workpiece. The amount of rotation of the knob is precisely controlled to ensure that the clamping force is evenly distributed.

[0030] 2. In this utility model, when replacing the gripper, first unscrew the bolt to unlock the slide plate and slider 2. The slide plate slides backward to disengage the slot from the block. Slider 2 can slide along the slide groove 2, making it easy to pull the gripper 205 out of the clamping arm to adapt to different workpiece processing. The spring and rubber pad of the gripper provide cushioning when clamping the workpiece to prevent damage and ensure clamping stability. Attached Figure Description

[0031] Figure 1 This is a front view of a turning clamping device proposed in this utility model;

[0032] Figure 2 This is a perspective view of a turning clamping device proposed in this utility model;

[0033] Figure 3 This is a partial structural exploded view of a turning clamping device proposed in this utility model;

[0034] Figure 4 This is a partial structural diagram of a turning clamping device proposed in this utility model;

[0035] Figure 5 This is an exploded view of a partial structure of a turning clamping device proposed in this utility model.

[0036] Legend:

[0037] 1. Base; 2. Clamping mechanism; 201. Fixing block; 202. Threaded rod; 203. Clamping arm; 204. Bearing; 205. Gripper; 206. Drive assembly; 2061. Knob; 2062. Protective groove; 207. Moving assembly; 2071. Slider one; 2072. Slide one; 3. Changing mechanism; 301. Slider two; 302. Slide two; 303. Locking block; 304. Slide block; 305. Slide plate; 306. Locking slot; 307. Mounting hole; 308. Bolt; 309. Elastic component; 3091. Spring; 3092. Rubber pad; 4. Roller. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a turning clamping device, including a base 1, a clamping mechanism 2 on the top of the base 1 for clamping a workpiece, and a replacement mechanism 3 on the top of the base 1 for replacing a fixture. The clamping mechanism 2 includes two fixing blocks 201, which are fixedly connected to the left and right sides of the middle of the top wall of the base 1. Threaded rods 202 penetrate the left and right sides of the outer walls of the fixing blocks 201. Bearings 204 are fixedly connected to adjacent ends of the outer walls of the two threaded rods 202. Clamping arms 203 are fixedly connected to the outer walls of the bearings 204. The threaded rods 202 rotate on the bearings 204 to push the clamping arms 203 to move. Clamping jaws 205 are provided on adjacent sides of the outer walls of the two clamping arms 203 for fixing the workpiece. The clamping mechanism 205 uses a high-strength clamping mechanism. The base is made of high-strength alloy steel with a surface hardened to improve wear resistance. A drive assembly 206 is provided on the top of the base 1, and a moving assembly 207 is provided on the top wall of the base 1. The drive assembly 206 includes a knob 2061, which is fixedly connected to the end of the outer wall of the threaded rod 202. The knob 2061 drives the threaded rod 202 to rotate on the fixed block 201. The outer wall of the knob 2061 is provided with protective texture 2062 to increase friction. The moving assembly 207 includes a slider 2071, whose top wall is fixedly connected to the bottom wall of the clamping arm 203. The bottom wall of the base 1 is provided with a groove 2072, and the slider 2071 is located inside the groove 2072. The slider 2071 under the clamping arm 203 is located inside the groove 2072.

[0040] Specifically, clamping mechanism 2 is responsible for fixing the workpiece, while replacement mechanism 3 is used to replace the fixture. By rotating knob 2061, the protective groove 2062 is used to increase friction, driving threaded rod 202 to rotate on fixed block 201, realizing threaded transmission, and thus moving threaded rod 202. The rotation of threaded rod 202 pushes clamping arm 203 to move through bearing 204. At the same time, slider 2071 at the bottom of clamping arm 203 slides in groove 2072, thereby completing the clamping or releasing action of jaw 205 on the workpiece. The clamping force of jaw 205 can be precisely controlled by adjusting the rotation of knob 2061 to ensure uniform distribution of clamping force. Jaw 205 is made of high-strength alloy steel, and the surface is hardened to improve wear resistance.

[0041] Reference Figure 2 , Figure 3 and Figure 5The replacement mechanism 3 includes two sliders 301, both of which are fixedly connected to the middle of the outer walls of the two grippers 205 on opposite sides. The middle of the middle of the outer walls of the two gripping arms 203 on adjacent sides is provided with a sliding groove 302. The sliders 301 are slidably connected to the sliding grooves 302. A locking block 303 is fixedly connected to the top wall of the slider 301. A sliding block 304 is fixedly connected to the rear side of the top wall of the gripping arm 203. A sliding plate 305 is provided on the inner side of the outer wall of the sliding block 304. A slot 306 is provided on the front side of the top wall of the sliding plate 305, which engages with the locking block 303. A mounting hole 307 is provided on the rear side of the top wall of the slider 301. A bolt 308 is threadedly connected to the top wall of the sliding plate 305. The top of the base 1... The part is provided with an elastic component 309, which includes springs 3091. Multiple springs 3091 are fixedly connected to adjacent sides of the outer wall of two grippers 205. Rubber pads 3092 are fixedly connected to the ends of multiple springs 3091. The springs 3091 and rubber pads 3092 on the grippers 205 provide cushioning when clamping the workpiece, avoiding damage caused by rigid contact between the grippers 205 and the workpiece, while increasing friction to ensure clamping stability. The slide plate 305 is slidably connected to the inner side of the outer wall of the slide block 304. The slide block 304 is used to slide the slide plate 305. The slide plate 305 is threadedly connected to the mounting hole 307 by bolts 308. The bolts 308 are used to further fix the slide plate 305 to the grippers 205.

[0042] Specifically, during the replacement of the gripper 205, the bolt 308 must first be loosened to release the locking state between the slide plate 305 and the second slider 301. Then, slide the slide plate 305 backward to disengage the slot 306 from the block 303. At this time, the second slider 301 can slide freely on the second slide groove 302, and the gripper 205 can be pulled out from the clamping arm 203 to meet the processing needs of different workpieces. The spring 3091 and rubber pad 3092 equipped on the gripper 205 play a buffering role when clamping the workpiece, preventing the gripper 205 from making rigid contact with the workpiece, thereby avoiding damage to the workpiece, and ensuring the stability of clamping by increasing friction. The slide block 304 is used to slide the slide plate 305, and the bolt 308 is used to further fix the slide plate 305 on the gripper 205.

[0043] Reference Figure 2 and Figure 3The threaded rod 202 is threadedly connected to the middle of the outer wall of the fixed block 201. The threaded rod 202 rotates in the middle of the fixed block 201. Two bearings 204 are fixedly connected to the middle of the outer wall of the two clamping arms 203 on opposite sides. The bearings 204 are used to reduce the friction between the threaded rod 202 and the clamping arm 203 when the threaded rod 202 rotates, so that the rotation of the threaded rod 202 is smoother. Rollers 4 are provided on the top left and right sides of the base 1. The rollers 4 are used to reduce sliding friction and improve the stability of movement. The slider 2071 is fixedly connected to the adjacent side of the outer wall of the two rollers 4. The rollers 4 are slidably connected to the slide groove 2072.

[0044] Specifically, the threaded rod 202 rotates in the middle of the fixed block 201, the bearing 204 is used to reduce the friction between the threaded rod 202 and the clamping arm 203 when the threaded rod 202 rotates, so that the rotation of the threaded rod 202 is smoother, and the roller 4 is used to reduce sliding friction and improve the stability of movement.

[0045] Working principle: During operation, the workpiece is placed between the jaws 205. By rotating the knob 2061, the threaded rod 202 rotates on the fixed block 201. The threaded transmission causes the threaded rod 202 to move. The threaded rod 202 rotates on the bearing 204 and pushes the clamping arm 203 to move. At the same time, the roller 4 on the slider 2071 under the clamping arm 203 is in the groove 2072. The roller 4 reduces the sliding friction resistance, thereby realizing the clamping or releasing of the workpiece by the jaws 205. The clamping force of the jaws 205 is precisely controlled by adjusting the rotation of the knob 2061 to ensure that the clamping force is evenly distributed.

[0046] When it is necessary to replace the gripper 205, first unscrew the bolt 308 to release the lock between the slide plate 305 and the second slider 301. Slide the slide plate 305 backward to disengage the slot 306 from the block 303. At this time, the second slider 301 can slide along the second slide groove 302, thereby pulling the gripper 205 out of the clamping arm 203 to meet the processing requirements of various workpieces. The spring 3091 and rubber pad 3092 on the gripper 205 provide cushioning when clamping the workpiece to avoid damage caused by rigid contact between the gripper 205 and the workpiece, while increasing friction to ensure clamping stability.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A turning chuck comprising a base (1), characterised in that: The base (1) is provided with a clamping mechanism (2) at the top, which is used to clamp the workpiece. The base (1) is also provided with a replacement mechanism (3) at the top, which is used to replace the fixture. The clamping mechanism (2) includes a fixing block (201), two fixing blocks (201) are fixedly connected to the left and right sides of the middle of the top wall of the base (1), threaded rods (202) are passed through the left and right sides of the outer wall of the fixing block (201), bearings (204) are fixedly connected to the adjacent ends of the outer walls of the two threaded rods (202), clamping arms (203) are fixedly connected to the outer walls of the bearings (204), and clamping claws (205) are provided on the adjacent sides of the outer walls of the two clamping arms (203). A driving component (206) is provided on the top of the base (1), and a moving component (207) is provided on the top wall of the base (1).

2. A turning chucking device according to claim 1, characterized in that: The drive assembly (206) includes a knob (2061), which is fixedly connected to the outer end of the threaded rod (202), and the outer wall of the knob (2061) is provided with protective texture (2062).

3. The turning chuck of claim 1, wherein: The moving component (207) includes a slider (2071), the top wall of which is fixedly connected to the bottom wall of the clamping arm (203), and the bottom wall of the base (1) is provided with a groove (2072), and the slider (2071) is disposed inside the groove (2072).

4. The turning chuck of claim 1, wherein: The replacement mechanism (3) includes two sliders (301). Both sliders (301) are fixedly connected to the middle of the outer walls of the two grippers (205) on opposite sides. The middle of the adjacent sides of the outer walls of the two gripping arms (203) are provided with sliding grooves (302). The sliders (301) are slidably connected to the sliding grooves (302). A locking block (303) is fixedly connected to the top wall of each slider (301). The rear side of the top wall of each gripping arm (203) is fixedly... A sliding block (304) is fixedly connected, and a sliding plate (305) is provided on the inner side of the outer wall of the sliding block (304). A slot (306) is provided on the front side of the top wall of the sliding plate (305), and the slot (306) engages with the locking block (303). An installation hole (307) is provided on the rear side of the top wall of the second slider (301). A bolt (308) is threadedly connected to the top wall of the sliding plate (305). An elastic component (309) is provided on the top of the base (1).

5. A turning chucking device according to claim 4, characterized in that: The elastic component (309) includes springs (3091), and multiple springs (3091) are fixedly connected to adjacent sides of the outer wall of two grippers (205). Rubber pads (3092) are fixedly connected to the ends of multiple springs (3091).

6. The turning chuck of claim 1, wherein: The threaded rod (202) is threadedly connected to the middle of the outer wall of the fixed block (201), and the two bearings (204) are fixedly connected to the middle of the outer wall of the two clamping arms (203) on opposite sides.

7. The turning chuck of claim 3, wherein: Rollers (4) are provided on the top left and right sides of the base (1). The slider (2071) is fixedly connected to the adjacent side of the outer wall of the two rollers (4). The rollers (4) are slidably connected to the groove (2072).

8. The turning chuck of claim 4, wherein: The slide plate (305) is slidably connected to the inner side of the outer wall of the slide block (304), and the slide plate (305) is threadedly connected to the mounting hole (307) by bolts (308).

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