A machine tool clamp assembly and a machine tool

Abstract

This invention relates to the field of CNC machine tool technology, specifically to a machine tool fixture assembly and machine tool, used for a machine tool body. A four-jaw chuck is rotatably connected to an inner wall of the machine tool body, including a ring body. The four-jaw chuck is located inside the ring body, and the ring body is fixedly connected to an inner wall of the machine tool body. A connecting frame is fixedly connected to the outer wall of the ring body. An abutment mechanism is provided on one side of the ring body, and a moving mechanism for adjusting the abutment mechanism is provided inside the connecting frame. The abutment mechanism includes four support rods connected end to end. In this invention, by activating the moving mechanism, the abutment mechanism is controlled to clamp the outer wall of a cylindrical workpiece, thereby improving the stability of the workpiece by clamping one end of the workpiece and the outer wall by the four-jaw chuck and the abutment mechanism, respectively. Activating the moving mechanism also controls the abutment mechanism to remove any debris that may be entangled or accumulated on the cylindrical workpiece, thus facilitating the operator's processing of the cylindrical workpiece.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool technology, and more specifically to a machine tool fixture assembly and a machine tool. Background Technology

[0002] CNC machine tools are used for cutting internal and external cylindrical surfaces, internal and external conical surfaces with arbitrary cone angles, complex rotating internal and external curved surfaces, and cylindrical and conical threads of shaft or disc parts. They can also perform grooving, drilling, reaming, boring, and other operations. Existing CNC machine tool fixtures mostly use four-corner chucks or triangular chucks, which mainly clamp one end of shaft workpieces. The chuck then drives the workpiece to rotate, and a movable tool is used to cut the end face and outer wall of the workpiece. However, during operation, the outer wall of the workpiece is not subjected to clamping force. When some workpieces with damaged ends are clamped by the chuck, the clamping may be unstable due to the damage to the end of the workpiece. Furthermore, during cutting, long iron filings may wrap around the workpiece, affecting the machining process, or some of the wrapped iron filings may become entangled and accumulate on the workpiece, affecting the machining process. In such cases, some factories and workshops need to manually remove the iron filings, which is inconvenient. Summary of the Invention

[0003] In order to overcome the above-mentioned technical problems, the present invention aims to provide a machine tool fixture assembly and a machine tool, which controls the abutment mechanism to clamp the outer wall of the columnar workpiece by activating the moving mechanism, so that one end of the workpiece and the outer wall are respectively clamped by the four-jaw chuck and the abutment mechanism, thereby improving the stability of the workpiece. The moving mechanism controls the abutment mechanism to remove any debris that may be entangled or accumulated on the columnar workpiece, thereby facilitating the user to process the columnar workpiece.

[0004] The objective of this invention can be achieved through the following technical solutions:

[0005] A machine tool clamping assembly is used for a machine tool body, and a four-jaw chuck is rotatably connected to an inner wall of the machine tool body. The assembly includes a ring body, the four-jaw chuck is located inside the ring body, and the ring body is fixedly connected to an inner wall of the machine tool body. A connecting frame is fixedly connected to the outer wall of the ring body. An abutment mechanism is provided on one side of the ring body, and a moving mechanism for adjusting the abutment mechanism is provided inside the connecting frame. The moving mechanism controls the abutment mechanism to deform and abut against the outer wall of a columnar workpiece for positioning. This allows the workpiece to be clamped at one end by the four-jaw chuck on the machine tool body, and the outer wall of the workpiece can also be abutted and assisted by the abutment mechanism to improve the stability of the workpiece during processing. Furthermore, after the tool leaves the workpiece, the moving mechanism controls the abutment mechanism to remove any debris that may be entangled or accumulated on the columnar workpiece, thus facilitating the operator's processing of the columnar workpiece.

[0006] The abutment mechanism includes four support rods connected end-to-end. A connecting shaft is rotatably connected between adjacent ends of every two adjacent support rods. Two arms are symmetrically fixedly connected to one side of the ring body, and a slide rail is fixedly connected to one end of each arm. A slider is slidably connected inside each slide rail, and a U-shaped rod is rotatably connected to one end of each slider. A rotating block is rotatably connected between one end of each arm of the two U-shaped rods, and a connecting rod is fixedly connected to one end of each rotating block. One end of each connecting rod is rotatably connected to one end of two parallel and symmetrical connecting shafts. The four support rods are connected end-to-end... The four support rods are rotated and connected by connecting shafts, forming a rhombus shape that can deform freely. The two opposite connecting shafts in this rhombus are limited by two connecting rods, so that the two connecting shafts move along two slide rails when moving, thereby limiting the four support rods. In use, the moving mechanism controls the movement of one connecting shaft that is not connected to a connecting rod, so that the two connecting shafts connected to the connecting rods either move away from each other or towards each other, thereby adjusting the relative distance between the two rotating blocks. This allows the two rotating blocks to abut and clamp the outer wall of the workpiece, providing auxiliary clamping to improve the stability of the workpiece.

[0007] Furthermore, the length of the support arm is greater than the thickness of the four-jaw chuck, and the slide rail is located on one side of the four-jaw chuck, so that the movement of the slider, U-shaped rod, connecting rod and support rod does not affect the clamping of the workpiece by the four-jaw chuck.

[0008] Furthermore, the two U-shaped rods are arranged symmetrically with the center of one side of the ring as the center point, and both U-shaped rods are inclined in opposite directions. This allows the two U-shaped rods to rotate on adjacent sliders and the two sliders to slide on adjacent slide rails for adaptive adjustment when the moving mechanism is activated to adjust the relative positions of the four connecting shafts. This ensures that when the relative positions of the four connecting shafts are adjusted, the two rotating blocks abut against the workpiece, and the two U-shaped rods, connecting rods, and sliders do not come into contact with the workpiece.

[0009] Furthermore, a pad frame is fixedly connected to the other end of the rotating block, and multiple rubber rollers are rotatably connected between the two opposite inner sidewalls of the pad frame. The pad frame and the rubber rollers contact the workpiece, making the workpiece less susceptible to interference during rotation and reducing friction on the rotating block.

[0010] Furthermore, the pad frame is an arc-shaped plate structure, which allows the pad frame to fit closer to the columnar workpiece for contact. The size of the pad frame can be set to a suitable arc according to the specific diameter of the workpiece being processed.

[0011] Furthermore, the distance between the adjacent ends of the two slide rails is equal to the diameter of the four-jaw chuck, so that the four support rods and the two rotating blocks will not affect the four-jaw chuck's clamping of the workpiece. Moreover, after the workpiece is clamped at one end by the four-jaw chuck, the position of the four support rods can be adjusted by the moving mechanism, so that the two U-shaped rods move towards each other, and the two rotating blocks abut against the outer wall of the workpiece.

[0012] Furthermore, the moving mechanism includes a locking block; a screw is disposed inside the connecting frame, with both ends of the screw rotatably connected to both ends of the connecting frame; the locking block is slidably engaged inside the connecting frame, and one end of the locking block has a locking hole for engaging with the outer wall of the screw; a sliding plate is disposed inside the connecting frame, with one end of the sliding plate slidably engaged inside the connecting frame; one end of the sliding plate has a threaded hole for engaging with the outer wall of the screw; the sliding plate is located between the locking block and the ring; an electric push rod is disposed between one side of the sliding plate and the locking block; a rotating plate is rotatably connected to one side of the electric push rod; one side of the rotating plate is rotatably connected to one end of the electric push rod; and the movable end of the electric push rod is rotatably connected to a connecting plate; one side of the sliding plate has a... A guide groove is provided, and a rotating shaft is provided inside the guide groove. The center of one side of the connecting plate is rotatably connected to one end of the rotating shaft, and a circular plate is rotatably connected to the other end of the rotating shaft. A fixed plate is fixedly connected to the center of one side of the circular plate, and one end of the fixed plate is rotatably connected to one end of a connecting shaft. A tension spring is fixedly connected to one end of the other side of the slide plate (440), and one end of the tension spring is fixedly connected to one side of the fixed plate. By starting the drive motor, the screw rotates and synchronously drives the slide plate and the engagement block to move at the same time. The diameters of the circular plate and the connecting plate are both greater than the width of the guide groove. The tension spring can keep the angle of the fixed plate from changing, so that the rotating shaft on the slide plate can squeeze a connecting shaft to move. A connecting shaft is not connected to any connecting rod, so that a connecting shaft is driven by the slide plate to move towards the ring body. During operation, one connecting shaft deforms the four support rods, causing the two connecting shafts connected to the connecting rods to move in opposite directions, thus separating the two rotating blocks and releasing the workpiece. When one connecting shaft is driven by the sliding plate to move towards the engagement block, the other connecting shaft pulls the four support rods to deform, causing the two pad frames on the two rotating blocks to move relative to each other and clamp the workpiece. When the electric push rod is activated, it can drive the four support rods to slide synchronously along the guide groove without deformation or change in relative position. Thus, by using the electric push rod and the drive motor in conjunction, the clamping position of the two rotating blocks on the outer wall of the workpiece can be adjusted. The guide groove is divided into a wavy groove and a straight groove. The straight groove is longer than the workpiece length. When the tool on the machine tool is removed, the other end of the workpiece that is not clamped is not obstructed. The obstruction mechanism works as follows: When the fixed plate, which moves with the rotating shaft, pulls a connecting shaft, it drives four support rods to move along the straight groove. The four support rods, in turn, drive two rotating blocks to scrape the workpiece surface, removing any debris entangled or accumulated on the workpiece and pushing it to the end of the workpiece. Once the four support rods are pulled to one end of the straight groove by the fixed plate, the two rotating blocks detach from the workpiece, allowing the debris scraped to the end to fall off naturally. Then, the rotating shaft enters the wavy groove and moves along it, causing the four support rods to move synchronously along the wavy groove via the fixed plate and a connecting shaft, shaking off any debris that may be hanging on the support rods. The lengths of the straight groove and wavy groove, as well as the lengths of the slide rail and U-shaped rod, can be set to appropriate lengths according to different practical needs.Because the pitch of the screw-in hole and the threaded hole are equal, the relative distance between the screw-in block and the slide plate remains constant.

[0013] Furthermore, a guide wheel is rotatably sleeved on the outer wall of the rotating shaft, making the rotating shaft move more smoothly in the guide groove.

[0014] Furthermore, a connecting shaft is located between the adjacent ends of two connecting rods, so that when one connecting shaft is pulled, the two rotating blocks can be moved by the four supports of the four-bar linkage.

[0015] A machine tool includes a clamping assembly and a machine tool body. The machine tool body, together with a four-jaw chuck, a moving mechanism, and a contacting mechanism, can not only assist in clamping the outer wall of the workpiece, but also clean up accumulated or entangled debris on the workpiece, thereby facilitating the processing of the workpiece.

[0016] The beneficial effects of this invention are:

[0017] 1. The moving mechanism controls the contact mechanism to deform and clamp the outer wall of the columnar workpiece, so that not only one end of the workpiece is clamped by the four-jaw chuck, but the outer wall of the workpiece can also be clamped by the contact mechanism, thereby improving the stability of the workpiece. In addition, the moving mechanism controls the contact mechanism to remove any debris that may be entangled or accumulated on the columnar workpiece, thereby making it easier for the user to process the columnar workpiece.

[0018] 2. By activating the moving mechanism, the four end-to-end support rods are deformed by the moving mechanism, thereby controlling the two connecting shafts connected to the two connecting rods to move towards each other or away from each other, thereby controlling the pad frames on the two rotating blocks to clamp or release the outer wall of the workpiece, so that in addition to one end being clamped by the four-jaw chuck, the outer wall of the workpiece can also be auxiliaryly clamped by the pad frames on the two rotating blocks, thereby improving the stability of the workpiece.

[0019] 3. By starting the drive motor, the screw rotates and synchronously drives the engagement block and slide plate to move. The slide plate presses a connecting shaft through the fixed plate, causing the four support rods to deform. When one connecting shaft moves in the direction of the ring body, the two connecting shafts connected to the adjacent connecting rods move away from each other, causing the two rotating blocks to detach from the workpiece. When one connecting shaft is driven by the slide plate to move towards the engagement block, one connecting rod pulls the four support rods to deform, causing the two connecting shafts connected to the adjacent connecting rods to move towards each other, causing the two rotating blocks to clamp the workpiece. When the electric push rod is started, it can pull the four support rods along the guide groove without deformation through the rotating shaft and the fixed plate, while the relative distance between the engagement block and the slide plate remains unchanged. This allows the position of the pad frame on the two rotating blocks clamping the outer wall of the workpiece to be adjusted by the cooperation of the drive motor and the electric push rod.

[0020] 4. After the tool is removed, there is no obstruction on the other end of the workpiece that is not clamped. Then, when the rotating shaft pulls a connecting shaft through the fixed plate and drives the four support rods to move along the straight groove, the four support rods drive two rotating blocks to scrape the surface of the workpiece, scraping the debris wrapped or accumulated on the workpiece to the end of the workpiece. After the four support rods are pulled to one end of the straight groove by the fixed plate, the two rotating blocks disengage from the workpiece, so that the debris scraped to the end of the workpiece is further scraped off the workpiece by the two rotating blocks and falls off naturally. Then the rotating shaft enters the wave groove and moves along the wave groove, so that the rotating shaft drives the four support rods to move synchronously along the wave groove through the fixed plate and a connecting shaft, shaking off any debris that may be hanging on the four support rods. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram showing the positional relationship between the four-jaw chuck, the contact mechanism, and the moving mechanism in this invention;

[0024] Figure 3 This is a schematic diagram showing the positional relationship between the contact mechanism and the moving mechanism in this invention;

[0025] Figure 4 This is an exploded view of the contact mechanism structure in this invention;

[0026] Figure 5 This is an exploded view of the moving mechanism structure in this invention;

[0027] Figure 6 This is a schematic diagram showing the positional relationship between the fixed plate, the circular plate, and the guide wheel in this invention;

[0028] Figure 7 This is a schematic diagram showing the usage of the contact mechanism and the moving mechanism in this invention;

[0029] Figure 8 This is a schematic diagram of the structure of the transfer block, pad frame, and rubber roller in this invention.

[0030] In the diagram: 100, machine tool body; 110, four-jaw chuck; 200, ring body; 201, support arm; 210, connecting frame; 211, screw; 220, drive motor; 300, contact mechanism; 310, support rod; 311, connecting shaft; 320, slide rail; 330, slider; 340, U-shaped rod; 350, rotating block; 351, pad frame; 352, rubber roller; 360, connecting rod; 400, moving mechanism; 410, engagement block; 411, rotating plate; 412, engagement hole; 420, electric push rod; 421, connecting plate; 430, rotating shaft; 431, guide wheel; 432, round plate; 433, fixed plate; 434, tension spring; 440, sliding plate; 441, threaded hole; 442, guide groove. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1-8 As shown, a machine tool fixture assembly is used for a machine tool body 100, and a four-jaw chuck 110 is rotatably connected to an inner wall of the machine tool body 100. The assembly includes a ring body 200, with the four-jaw chuck 110 located inside the ring body 200. The ring body 200 is fixedly connected to an inner wall of the machine tool body 100. A connecting frame 210 is fixedly connected to the outer wall of the ring body 200. An abutment mechanism 300 is provided on one side of the ring body 200, and a moving mechanism 400 for adjusting the abutment mechanism 300 is provided inside the connecting frame 210. Mechanism 400 controls the contact mechanism 300 to deform and contact the outer wall of the columnar workpiece for positioning. This allows the workpiece to be clamped at one end by the four-jaw chuck 110 on the machine tool body 100, and the outer wall of the workpiece can also be contacted and assisted by the contact mechanism 300 to improve the stability of the workpiece during processing. Furthermore, after the tool leaves the workpiece, the moving mechanism 400 controls the contact mechanism 300 to remove any debris that may be entangled or accumulated on the columnar workpiece, making it easier for the user to process the columnar workpiece.

[0033] The abutment mechanism 300 includes four support rods 310 connected end to end. A connecting shaft 311 is rotatably sleeved between adjacent ends of every two adjacent support rods 310. Two support arms 201 are symmetrically fixedly connected to one side of the ring body 200, and a slide rail 320 is fixedly connected to one end of each support arm 201. Sliding sliders 330 are slidably connected inside each slide rail 320, and a U-shaped rod 340 is rotatably connected to one end of each slider 330. A rotating block 350 is rotatably connected between one end of each arm of the two U-shaped rods 340, and a connecting rod 360 is fixedly connected to one end of each rotating block 350. One end of each connecting rod 360 is rotatably connected to one end of each of two parallel and symmetrical connecting shafts 311. The four support rods 310... The four support rods 310 are rotatably connected by connecting shafts 311 at both ends, forming a rhombus shape that can deform freely. The two opposite connecting shafts 311 in this rhombus are limited by two connecting rods 360, so that the two connecting shafts 311 move along two slide rails 320 when moving, thereby limiting the four support rods 310. In use, the moving mechanism 400 controls the movement of one connecting shaft 311 that is not connected to the connecting rod 360, so that the two connecting shafts 311 connected to the connecting rod 360 move either away from each other or towards each other, thereby adjusting the relative distance between the two rotating blocks 350, so that the two rotating blocks 350 abut and clamp the outer wall of the workpiece, providing auxiliary clamping to improve the stability of the workpiece.

[0034] The length of the support arm 201 is greater than the thickness of the four-jaw chuck 110, and the slide rail 320 is located on one side of the four-jaw chuck 110, so that the movement of the slider 330, U-shaped rod 340, connecting rod 360 and support rod 310 does not affect the clamping of the workpiece by the four-jaw chuck 110.

[0035] The two U-shaped rods 340 are arranged symmetrically with the center of one side of the ring 200 as the center point, and both U-shaped rods 340 are inclined in opposite directions. This allows the two U-shaped rods 340 to rotate on adjacent sliders 330 and slide on adjacent slide rails 320 for adaptive adjustment when the moving mechanism 400 starts to adjust the relative position of the four connecting shafts 311. This ensures that the two rotating blocks 350 abut against the workpiece when the relative position of the four connecting shafts 311 is adjusted, and the two U-shaped rods 340, connecting rods 360 and sliders 330 do not come into contact with the workpiece.

[0036] The other end of the rotating block 350 is fixedly connected to a pad frame 351, and multiple rubber rollers 352 are rotatably connected between the two opposite inner sidewalls of the pad frame 351. The pad frame 351 and the rubber rollers 352 contact the workpiece, so that the workpiece is not easily affected when rotating, and at the same time, the friction on the rotating block 350 is reduced.

[0037] The pad frame 351 has an arc-shaped plate structure, which allows the pad frame 351 to further conform to the columnar workpiece for contact. The size of the pad frame 351 can be set to a suitable arc according to the specific diameter of the workpiece being processed.

[0038] The distance between the two adjacent ends of the slide rails 320 is equal to the diameter of the four-jaw chuck 110, so that the four support rods 310 and the two rotating blocks 350 will not affect the four-jaw chuck 110 in clamping the workpiece. After the workpiece is clamped at one end by the four-jaw chuck 110, the position of the four support rods 310 can be adjusted by the moving mechanism 400, so that the two U-shaped rods 340 move towards each other, and the two rotating blocks 350 abut against the outer wall of the workpiece.

[0039] The moving mechanism 400 includes a locking block 410. A screw 211 is disposed inside the connecting frame 210, with both ends of the screw 211 rotatably connected to both ends of the connecting frame 210. The locking block 410 is slidably engaged inside the connecting frame 210, and one end of the locking block 410 has a locking hole 412 for engaging with the outer wall of the screw 211. A sliding plate 440 is disposed inside the connecting frame 210, with one end of the sliding plate 440 slidably engaged inside the connecting frame 210. One end of the sliding plate 440 has a threaded hole 441 for engaging with the outer wall of the screw 211. The sliding plate 440 is located between the locking block 410 and the ring 200. An electric push rod 420 is disposed between one side of the sliding plate 440 and the locking block 410. A rotating plate 411 is rotatably connected to one side of the electric push rod 420. One side of the rotating plate 411 is rotatably connected to one end of the electric push rod 420. A connecting plate 421 is rotatably connected to the movable end of the electric push rod 420. A guide groove 442 is provided on one side of the slide plate 440, and a rotating shaft 430 is installed inside the guide groove 442. The center of one side of the connecting plate 421 is rotatably connected to one end of the rotating shaft 430, and a circular plate 432 is rotatably connected to the other end of the rotating shaft 430. A fixing plate 433 is fixedly connected to the center of one side of the circular plate 432, and one end of the fixing plate 433 is rotatably connected to one end of a connecting shaft 311. A tension spring 434 is fixedly connected to one end of the other side of the slide plate 440, and one end of the tension spring 434 is fixedly connected to one side of the fixing plate 433. The system is activated by a drive. Motor 220 rotates screw 211, synchronously driving slide plate 440 and engagement block 410 to move simultaneously. The diameters of circular plate 432 and connecting plate 421 are both larger than the width of guide groove 442. Tension spring 434 keeps the angle of fixed plate 433 from changing, allowing the rotating shaft 430 on slide plate 440 to press a connecting shaft 311 to move. One connecting shaft 311 is not connected to any connecting rod 360. When one connecting shaft 311 is driven by slide plate 440 to move towards ring 200, it compresses four support rods 310, causing two connecting shafts 311 connected to connecting rods 360 to move in opposite directions, thus separating the two rotating blocks 350 and releasing the workpiece. When one connecting... When the connecting shaft 311 is moved towards the engagement block 410 by the slide plate 440, one connecting shaft 311 pulls the four support rods 310 to deform, causing the two pad frames 351 on the two rotating blocks 350 to move relative to each other and clamp the workpiece. When the electric push rod 420 is activated, it can drive the four support rods 310 to slide synchronously along the guide groove 442 without deformation or change in relative position. Thus, by using the electric push rod 420 and the drive motor 220 in conjunction, the clamping position of the two rotating blocks 350 on the outer wall of the workpiece can be adjusted. The guide groove 442 is divided into a wavy groove and a straight groove. The straight groove is longer than the length of the workpiece, so when the tool on the machine tool is removed, there is no obstruction on the other end of the workpiece that is not clamped.When the fixed plate 433, which moves with the rotating shaft 430, pulls a connecting shaft 311, causing the four support rods 310 to move along the straight groove, the four support rods 310 drive the two rotating blocks 350 to scrape the surface of the workpiece, scraping the debris wrapped or accumulated on the workpiece to the end of the workpiece. After the four support rods 310 are pulled to one end of the straight groove by the fixed plate 433, the two rotating blocks 350 detach from the workpiece, allowing the debris scraped to the end of the workpiece to continue to be scraped off the workpiece by the two rotating blocks 350 and fall off naturally. Then the rotating shaft 430 enters the wave... The wave groove section moves along the wave groove section, causing the rotating shaft 430 to drive the four support rods 310 to move synchronously along the wave groove section and sway through the fixed plate 433 and a connecting shaft 311, shaking off any debris that may be hanging on the four support rods 310. The lengths of the straight groove section and the wave groove section, as well as the lengths of the slide rail 320 and the U-shaped rod 340, can be set to appropriate lengths according to different actual needs. Since the pitch of the screw-in hole 412 and the threaded hole 441 is equal, the relative distance between the screw-in locking block 410 and the sliding plate 440 remains unchanged.

[0040] A guide wheel 431 is rotatably sleeved on the outer wall of the rotating shaft 430, which makes the rotating shaft 430 move more smoothly in the guide groove 442.

[0041] A connecting shaft 311 is located between the adjacent ends of two connecting rods 360, so that when the connecting shaft 311 is pulled, the two rotating blocks 350 can be moved by the four support rods 310 of the four-bar linkage.

[0042] A machine tool includes a clamping assembly and a machine tool body 100. The machine tool body 100 cooperates with a four-jaw chuck 110, a moving mechanism 400, and a contacting mechanism 300 to not only assist in clamping the outer wall of the workpiece, but also to clean up the accumulated or entangled debris on the workpiece, thereby facilitating the processing of the workpiece.

[0043] Working principle: In use, one end of the cylindrical workpiece is inserted into the four-jaw chuck 110, and the four-jaw chuck 110 is activated to clamp and secure one end of the workpiece. Then, the electric push rod 420 is activated, which drives the rotating shaft 430 to move in the linear groove. This causes the fixed plate 433 to pull the four support rods 310 synchronously through a connecting shaft 311 to adjust the position of the two rotating blocks 350. Then, the drive motor 220 is activated, which drives the screw-on locking block 410 and the sliding plate 440 synchronously towards the ring body 200 through the screw 211. This causes the connecting shaft 311 to compress and deform the four support rods 310, causing the two connecting shafts 311 connected to the connecting rods 360 to move towards each other. This causes the rubber rollers 352 on the two pad frames 351 to come into contact with the outer wall of the workpiece for clamping. Then, the workpiece rotates, and the cutter moves to clamp the rotating workpiece. During the cutting operation, the drive motor 220 can be started to control the engagement block 410 and the slide plate 440 to move towards the drive motor 220, causing the four support rods 310 to deform and the two rotating blocks 350 to move away from each other to release the workpiece. Then, the electric push rod 420 is started to retract its movable end, so that the movable end of the electric push rod 420 pulls the four support rods 310 to move synchronously through the rotating shaft 430 to adjust the position of the two rotating blocks 350 on the outer wall of the workpiece. Then, the drive motor 220 is started again to drive the engagement block 410 and the slide plate 440 to move, so that the two rotating blocks 350 move towards each other to clamp the workpiece. Thus, when the tool is cutting the workpiece, the rubber rollers 352 on the two rotating blocks 350 can continuously change positions to assist in clamping the workpiece without affecting the movement of the tool.

[0044] When cutting stops, the tool is removed, and then the drive motor 220 is started, causing the slide plate 440 and the engagement block 410 to move slightly towards the drive motor 220, so that the rubber rollers 352 on the two rotating blocks 350 are close to the workpiece but not in contact with it. Then the electric push rod 420 is started, and its movable end extends to pull the four support rods 310 along the straight groove through the rotating shaft 430, so that the two rotating blocks 350 scrape the debris wrapped or accumulated on the outer wall of the workpiece to one end of the workpiece. After the electric push rod 420 moves... After the end moves to one end of the straight groove, the two rotating blocks 350 detach from the workpiece, causing the debris wrapped or accumulated on the workpiece to be scraped to the end of the workpiece that is not clamped and then fall off naturally. Then, the moving end of the electric push rod 420 drives the rotating shaft 430 into the wave groove, causing the fixed plate 433 to pull the four support rods 310 to move synchronously along the wave groove. The fixed plate 433 synchronously drives the four support rods 310 to move along the wave groove, causing the four support rods 310 to shake and shake off any debris that may be wrapped on the four support rods 310.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The above description is merely an example and illustration of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A machine tool clamp assembly for a machine tool body (100), and the machine tool body (100) is rotatably connected with a four-jaw chuck (110) on an inner side wall, characterized in that, Includes a ring body (200), the four-jaw chuck (110) is located inside the ring body (200), and the ring body (200) is fixedly connected to an inner side wall of the machine tool body (100). A connecting frame (210) is fixedly connected to the outer side wall of the ring body (200). A resisting mechanism (300) is provided on one side of the ring body (200), and a moving mechanism (400) for adjusting the resisting mechanism (300) is provided inside the connecting frame (210). The abutment mechanism (300) includes four support rods (310), which are connected end to end. A connecting shaft (311) is rotatably sleeved between the adjacent ends of each pair of adjacent support rods (310). Two support arms (201) are symmetrically fixedly connected to one side of the ring body (200), and a slide rail (320) is fixedly connected to one end of each of the two support arms (201). A slider (330) is slidably connected inside each of the two slide rails (320), and a U-shaped rod (340) is rotatably connected to one end of each of the two sliders (330). A rotating block (350) is rotatably connected between the two arms of each of the two U-shaped rods (340), and a connecting rod (360) is fixedly connected to one end of each of the two rotating blocks (350). One end of each of the two connecting rods (360) is rotatably connected to one end of each of the two parallel and symmetrical connecting shafts (311). The moving mechanism (400) includes a locking block (410). A screw (211) is provided inside the connecting frame (210), and both ends of the screw (211) are rotatably connected to both ends inside the connecting frame (210). The locking block (410) is slidably engaged inside the connecting frame (210), and one end of the locking block (410) is provided with a locking hole (412) for engaging with the outer wall of the screw (211). A sliding plate (440) is provided inside the connecting frame (210), and one end of the sliding plate (440) is slidably engaged inside the connecting frame (210). One end of the sliding plate (440) is provided with a threaded hole (441) for engaging with the outer wall of the screw (211). The sliding plate (440) is located between the locking block (410) and the ring (200). An electric push rod is provided between one side of the sliding plate (440) and the locking block (410). 420), and a rotating plate (411) is rotatably connected to one side of the electric push rod (420). The rotating plate (411) is rotatably connected to one end of the electric push rod (420). The movable end of the electric push rod (420) is rotatably connected to a connecting plate (421). A guide groove (442) is provided on one side of the slide plate (440). A rotating shaft (430) is provided inside the guide groove (442). The center of one side of the connecting plate (421) is rotatably connected to one end of the rotating shaft (430). A circular plate (432) is rotatably connected to the other end of the rotating shaft (430). A fixing plate (433) is fixedly connected to the center of one side of the circular plate (432). One end of the fixing plate (433) is rotatably connected to one end of a connecting shaft (311). A tension spring (434) is fixedly connected to one end of the other side of the slide plate (440). One end of the tension spring (434) is fixedly connected to one side of the fixing plate (433).

2. A machine tool fixture assembly according to claim 1, characterized in that, The length of the support arm (201) is greater than the thickness of the four-jaw chuck (110), and the slide rail (320) is located on one side of the four-jaw chuck (110).

3. A machine tool fixture assembly according to claim 1, characterized in that, The two U-shaped rods (340) are arranged in a mirror symmetrical manner with the center of one side of the ring (200) as the center point, and both U-shaped rods (340) are arranged at an angle.

4. A machine tool fixture assembly according to claim 1, characterized in that, The other end of the rotating block (350) is fixedly connected to a pad frame (351), and multiple rubber rollers (352) are rotatably connected between the two opposite inner sidewalls of the pad frame (351).

5. A machine tool fixture assembly according to claim 4, characterized in that, The pad frame (351) is an arc-shaped plate structure.

6. A machine tool fixture assembly according to claim 1, characterized in that, The distance between the two adjacent ends of the slide rails (320) is equal to the diameter of the four-jaw chuck (110).

7. A machine tool fixture assembly according to claim 1, characterized in that, The outer wall of the rotating shaft (430) is rotatably sleeved with a guide wheel (431).

8. A machine tool fixture assembly according to claim 1, characterized in that, A connecting shaft (311) is located between the adjacent ends of two connecting rods (360).

9. A machine tool, characterized in that, The invention includes a machine tool fixture assembly and a machine tool body (100) as described in any one of claims 1-8.

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