Closed clamping jaw seat, clamp and machine tool

Abstract

The invention discloses a closed clamping jaw seat, a clamp and a machine tool, the closed clamping jaw seat comprises a mounting seat, a sliding seat and a linear driving piece, the upper end of the mounting seat is concavely provided with a strip-shaped movable groove arranged along the left-right direction, the sliding seat is attached to the upper end of the mounting seat and covers the notch of the movable groove, the linear driving piece is arranged on the mounting seat, and the linear driving piece is arranged on the sliding seat. The driving end of the linear driving piece is located in the movable groove, the driving end of the linear driving piece is in transmission connection with the middle of the lower end of the sliding base, the linear driving piece is used for driving the sliding base to slide on the mounting base in the left-right direction, and when the sliding base slides leftwards or rightwards to the limiting position, the sliding base covers a groove opening of the movable groove; in this way, dust above the sliding seat can be prevented from entering the movable groove, and a dust-proof isolation barrier is formed for the linear driving piece.

Description

Technical Field

[0001] This invention belongs to the field of machine tool technology, and particularly relates to a closed chuck seat, fixture and machine tool. Background Technology

[0002] Currently, most machine tool chuck holders are driven by lead screws to clamp or release the workpiece, but this has several prominent problems: 1. The lead screw is exposed and lacks protection, making it easy for dust and iron filings to enter, causing damage to the lead screw and drive block or even jamming. 2. When operators rotate the lead screw to clamp the workpiece, they often rely on experience to judge the clamping force, which can easily lead to the use of excessive clamping force, causing the lead screw to bend, deform or even be damaged, thus affecting the alignment of the workpiece and the machining accuracy. 3. During the processing of the workpiece, it is impossible to determine whether the chuck is loose, which can easily lead to a loss of alignment accuracy and pose a significant safety risk.

[0003] Therefore, providing a closed-type chuck seat structure to overcome the above-mentioned technical defects is an urgent problem to be solved. Summary of the Invention

[0004] To achieve the above objectives, one of the objectives of this invention is to provide a closed-type chuck seat with a simple structure that can isolate the lead screw from dust and debris.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: A closed-type claw seat includes a mounting base, a sliding base, and a linear drive component. The mounting base is horizontally arranged in the left-right direction, and the upper end of the mounting base is recessed with a strip-shaped movable groove arranged in the left-right direction. The sliding base is placed against the upper end of the mounting base and covers the opening of the movable groove. The linear drive component is disposed on the mounting base, and its driving end is located in the movable groove. The driving end of the linear drive component is connected to the middle part of the lower end of the sliding base. The linear drive component is used to drive the sliding base to slide in the left-right direction on the mounting base. When the sliding base slides to the left or right to its limit position, the sliding base covers the opening of the movable groove.

[0006] The beneficial effect of the above-mentioned technical solution of the present invention is that: by placing the driving end of the linear drive member in the movable groove and having it slidably covered by the sliding seat, the linear drive member always covers the movable groove when it drives the sliding seat to slide left and right. This can prevent dust and debris above the sliding seat from entering the movable groove, thereby forming a dust and debris isolation barrier for the linear drive member.

[0007] Based on the above technical solution, the present invention can be further improved as follows: Furthermore, the linear drive includes a handle, a lead screw, and a drive block. The lead screw is horizontally arranged in the movable groove along the left-right direction, and its two ends are rotatably connected to the two ends of the movable groove. Any end of the lead screw passes through the corresponding side of the mounting base to connect with the handle. The drive block is placed in the movable groove, and a through hole is provided in the middle of the drive block. The through hole is a threaded hole that is threaded to engage with the lead screw. The lead screw passes through the through hole and is threadedly connected to the drive block. The drive block constitutes the drive end of the linear drive. The handle drives the lead screw to rotate forward or reverse to move the drive block in the movable groove along the left-right direction.

[0008] The beneficial effects of the above-mentioned further technical solution are as follows: the linear drive component has a simple structure, wherein the lead screw can limit the drive block and the sliding seat when it is stationary, and the lead screw can be driven to rotate forward or reverse when the handle is turned manually.

[0009] Furthermore, a mandrel is coaxially protruding at the middle of both ends of the lead screw. The two mandrels are rotatably connected to both ends of the movable groove. Any one of the mandrels passes through the corresponding side of the mounting base to connect with the handle. The edges of both ends of the lead screw are close to the corresponding ends of the movable groove. Pressure sensors are provided at both ends of the movable groove. The sensing end of the pressure sensor abuts against the edge of the corresponding end of the lead screw. The two pressure sensors are used to jointly detect the direction and magnitude of the force applied to the lead screw by the sliding seat in the axial direction.

[0010] The beneficial effect of the above-mentioned further technical solution is that it makes the rotatable connection between the lead screw and the mounting base better.

[0011] Furthermore, it also includes a connecting bolt. The upper end of the sliding seat has a through mounting hole in the middle. The upper end of the drive block has a connecting hole that is aligned with the mounting hole. The connecting hole is a threaded hole that mates with the connecting bolt. The connecting bolt passes through the mounting hole and is threadedly connected to the connecting hole to drive the sliding seat and the drive block. And / or the lower end of the sliding seat is recessed in the middle of a groove that mates with the upper end of the driving block, and the upper end of the driving block is inserted into the groove to drive the upper end of the driving block to the sliding seat.

[0012] The beneficial effects of the above-mentioned further technical solutions are as follows: by setting connecting bolts, the connection between the sliding seat and the drive block is made more convenient, and by setting an embedded groove at the lower end of the sliding seat, the connection between the sliding seat and the drive block can withstand a greater torque.

[0013] Furthermore, the driving end of the linear drive can slide in the left and right direction to abut against the left and right ends of the movable groove. The length of the sliding seat in the left and right direction is L1, the length of the groove opening in the left and right direction is L2, and the width of the driving end of the linear drive in the left and right direction is L3, where L1 ≥ 2L2 - L3.

[0014] The beneficial effect of the above-mentioned further technical solution is that when the driving end of the linear drive is connected to the middle position corresponding to the left and right direction of the lower end of the sliding seat, it can ensure that the sliding seat completely covers the opening of the active groove, regardless of whether the sliding seat slides to the left or right until the driving end abuts against either end of the active groove.

[0015] Furthermore, it also includes two limiting strips, which are horizontally arranged in the left-right direction and spaced apart in the front-back direction on the mounting base. The sliding seat is placed on the mounting base and slidably clamped between the two limiting strips. The lower ends of the two limiting strips on the side closest to each other are recessed with sliding grooves distributed in the left-right direction. The two sides of the sliding seat extend into the corresponding sliding grooves to slide the sliding seat on the mounting base.

[0016] The beneficial effect of the above-mentioned further technical solution is that the two limiting strips can limit the sliding seat on the mounting base, and the sliding seat on the mounting base only has a sliding range in the left and right directions.

[0017] The second objective of this invention is to provide a clamp with a simple structure that can move on one side and isolate dust and debris from the lead screw.

[0018] To achieve the above objectives, the technical solution of the present invention is as follows: a clamp includes a plurality of jaws and a closed jaw seat as described above, at least one of the jaws is disposed on the mounting base and located to the left or right of the sliding base, and the remaining jaws are disposed on the sliding base.

[0019] The beneficial effect of the above-mentioned technical solution of the present invention is that the enclosed jaw seat can drive the jaw on it to move closer to or further away from the other jaw, so as to clamp or release the workpiece.

[0020] The third objective of this invention is to provide a clamp with a simple structure that can move on both sides and can isolate dust and debris from the lead screw.

[0021] To achieve the above objectives, the technical solution of the present invention is as follows: a clamp includes a plurality of jaws and two closed jaw seats as described above, the two closed jaw seats are arranged in a left-right direction, at least one of the jaws is disposed on one of the sliding seats, and the remaining jaws are disposed on the other sliding seat.

[0022] The beneficial effect of the above-mentioned technical solution of the present invention is that the two closed jaw seats can respectively drive the jaws on them to move closer to each other or further apart, so as to clamp or release the workpiece.

[0023] Based on the above technical solution, the present invention can be further improved as follows: Furthermore, the two mounting bases extend into a single integral shape.

[0024] The beneficial effect of the above-mentioned further technical solution is that it makes the structure of the entire fixture simpler and neater.

[0025] The fourth objective of this invention is to provide a machine tool with a simple structure that can isolate dust and debris from the lead screw.

[0026] To achieve the above objectives, the technical solution of the present invention is as follows: a machine tool, including the fixture described above.

[0027] The beneficial effect of the above-mentioned technical solution of the present invention is that the machine tool can avoid the influence of dust and debris on the linear drive components. Attached Figure Description

[0028] Figure 1 This is a cross-sectional view of the closed jaw seat described in Embodiment 1 of the present invention in the left-right direction; Figure 2 This is a left or right view of the closed claw seat described in Embodiment 1 of the present invention; Figure 3 for Figure 1 Enlarged view of point A in the middle; Figure 4 This is a front or rear view of the enclosed claw seat described in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram showing the driving end of the linear drive unit described in Embodiment 1 of the present invention moving to its extreme left position; Figure 6 This is a schematic diagram showing the driving end of the linear drive unit described in Embodiment 1 of the present invention moving to its extreme right position; Figure 7 This is one of the cross-sectional views of the fixture described in Embodiment 2 of the present invention; Figure 8 This is a second cross-sectional view of the fixture described in Embodiment 2 of the present invention; Figure 9 This is a schematic diagram of the switching direction of one of the grippers in Embodiment 2 of the present invention; Figure 10 This is a cross-sectional view of the fixture described in Embodiment 3 of the present invention.

[0029] In the diagram: 1. Enclosed gripper seat; 11. Mounting base; 111. Movable groove; 12. Sliding seat; 121. Mounting hole; 122. Embedded groove; 123. Connecting groove; 124. First limiting groove; 13. Linear drive component; 131. Handle; 132. Lead screw; 1321. Mandrel; 133. Drive block; 1331. Through hole; 1332. Connecting hole; 14. Pressure sensor; 15. Connecting bolt; 16. Limiting strip; 161. Slide groove; 17. Digital display module; 18. Scraping strip; 181. Clamping strip; 182. Flexible strip; 1821. First abutting strip; 1822. Second abutting strip; 1823. Scraping strip; 183. Mounting bolt; 2. Gripper; 21. Base; 211. Limiting tooth; 22. Support column; 3. Fixed seat; 31. Second limiting groove. Detailed Implementation

[0030] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0032] It is understood that spatial relation terms such as “below,” “under,” “below,” “below,” “above,” “above,” etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as “below,” “below,” or “below” will be oriented “above” the other element or feature. Therefore, the exemplary terms “below” and “under” can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0033] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0034] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0035] Example 1 like Figure 1 As shown, this embodiment provides a closed-type claw seat 1, including a mounting base 11, a sliding base 12, and a linear drive member 13. The mounting base 11 is horizontally arranged in the left-right direction, and the upper end of the mounting base 11 is recessed with a strip-shaped movable groove 111 arranged in the left-right direction. The sliding base 12 is placed on the upper end of the mounting base 11 and covers the opening of the movable groove 111. The linear drive member 13 is disposed on the mounting base 11, and its driving end is located in the movable groove 111. The driving end of the linear drive member 13 is connected to the middle part of the lower end of the sliding base 12. The linear drive member 13 is used to drive the sliding base 12 to slide in the left-right direction on the mounting base 11. When the sliding base 12 slides to the left or right to the limit position, the sliding base 12 covers the opening of the movable groove 111. By placing the driving end of the linear drive 13 inside the movable groove 111 and having it slidably covered by the sliding seat 12, the linear drive 13 always covers the movable groove 111 when it drives the sliding seat 12 to slide left and right. This prevents dust and debris above the sliding seat 12 from entering the movable groove 111, thus forming a dust and debris barrier for the linear drive 13.

[0036] In this embodiment, the upper end of the mounting base 11 and the lower end of the sliding base 12 are flat surfaces (except for the movable groove 111). This makes the sealing performance better when the lower end of the sliding base 12 is in contact with the upper end of the mounting base 11. When the movable groove 111 is covered, even if there is dust in the area of ​​the upper end of the mounting base 11 located on the periphery of the sliding base 12, the dust will be pushed away from the sliding area of ​​the sliding base 12 during the sliding process of the sliding base 12, so as to prevent the dust from entering the movable groove 111.

[0037] In this embodiment, the mounting base 11 can be cuboid, and the sliding base 12 can be a square plate, but it is not limited to these shapes.

[0038] like Figure 1 and Figure 2As shown, the enclosed claw seat 1 in this embodiment further includes two limiting strips 16. The two limiting strips 16 are horizontally arranged in the left-right direction and spaced apart in the front-back direction on the mounting base 11. The sliding seat 12 is placed on the mounting base 11 and slidably clamped between the two limiting strips 16. The lower ends of the two limiting strips 16 on the side closest to each other are recessed with sliding grooves 161 distributed in the left-right direction. The two sides of the sliding seat 12 extend into the corresponding sliding grooves 161 to slide the sliding seat 12 on the mounting base 11. This allows the two limiting strips 16 to limit the sliding seat 12 on the mounting base 11, and the sliding seat 12 has only a left-right sliding range on the mounting base 11.

[0039] like Figure 2 As shown, in this embodiment, the end face of the limiting strip 16 is shaped like a "Γ", and the two limiting strips 16 are arranged in parallel. The sides of the two strips with the groove 161 are close to each other to limit the sliding seat 12. In this embodiment, the limiting strip 16 can be welded to the mounting base 11 or fastened to the mounting base 11 by bolts (the bolt fastening method is the prior art in this field and will not be described in detail here). This allows the limiting strip 16 to be removed from the mounting base 11 when the linear drive component 13 needs maintenance, so that the sliding seat 12 can be removed from the mounting base 11. It also facilitates the assembly of the entire enclosed claw seat 1.

[0040] like Figure 1 As shown, in this embodiment, the linear drive 13 includes a handle 131, a lead screw 132, and a drive block 133. The lead screw 132 is horizontally arranged in the movable groove 111 along the left-right direction, and both ends of the lead screw 132 are rotatably connected to both ends of the movable groove 111. Any end of the lead screw 132 passes through the corresponding side of the mounting base 11 to connect with the handle 131. The drive block 133 is placed in the movable groove 111, and a through hole 1331 is provided in the middle of the drive block 133. The through hole 1331 is a threaded hole that is threaded to the lead screw 132. The lead screw 132 passes through the through hole 1331 and is threadedly connected to the drive block 133. The drive block 133 constitutes the drive end of the linear drive 13. The handle 131 drives the lead screw 132 to rotate forward or reverse to drive the drive block 133 to move in the movable groove 111 along the left-right direction. The linear drive 13 has a simple structure. When the lead screw 132 is stationary, it can limit the drive block 133 and the sliding seat 12. When the handle 13 is turned manually, the lead screw 132 can be driven to rotate forward or backward.

[0041] In this embodiment, the handle 131 is a handwheel. At this time, the handle 131 is coaxially and fixedly connected to the end of the corresponding spindle 1321. Of course, the handle 131 can also be a torque wrench. In this case, the end of the corresponding spindle 1321 can be a regular hexagon. In this case, the torque wrench can engage with the end of the corresponding spindle 1321 and turn the lead screw 132.

[0042] In this embodiment, the threads on the lead screw 132 extend to both ends near the movable groove 111.

[0043] Specifically, such as Figure 1 As shown, in this embodiment, the middle of both ends of the lead screw 132 is coaxially provided with a spindle 1321. The two spindles 1321 are rotatably connected to both ends of the movable groove 111. Any one of the spindles 1321 passes through the corresponding side of the mounting base 11 to connect with the handle 131. The edges of both ends of the lead screw 132 are close to the corresponding ends of the movable groove 111. Pressure sensors 14 are provided at both ends of the movable groove 111. The sensing ends of the pressure sensors 14 abut against the edges of the corresponding ends of the lead screw 132. The two pressure sensors 14 are used to jointly detect the direction and magnitude of the force applied axially by the sliding seat 12 to the lead screw 132. This improves the rotatable connection between the lead screw 132 and the mounting base 11. In this embodiment, there is an annular step at the transition between the spindle 1321 and the lead screw 132, and the sensing ends of the pressure sensors 14 abut against the corresponding annular step at the end of the lead screw 132.

[0044] like Figure 4 As shown, in this embodiment, the mounting base 11 may also be equipped with a digital display module 17, and the pressure sensor 14 is electrically connected to the digital display module 17. At this time, the digital display module 17 can display the pressure values ​​sensed by the two pressure sensors 14 in real time (in this embodiment, the digital display module 17 may be disposed on the side wall of the mounting base 11). In this embodiment, the combination of the digital display module 17 and the pressure sensor 14 is similar to that of existing digital display pressure sensors. The only difference in this embodiment is that the digital display module 17 and the pressure sensor 14 are in a separate state.

[0045] like Figure 1As shown, in this embodiment, the enclosed claw seat 1 further includes a connecting bolt 15. A through mounting hole 121 is provided in the middle of the upper end of the sliding seat 12. A connecting hole 1332, aligned with the mounting hole 121, is recessed at the upper end of the driving block 133. The connecting hole 1332 is a threaded hole that mates with the connecting bolt 15. The connecting bolt 15 passes through the mounting hole 121 and is threadedly connected to the connecting hole 1332 to drive the sliding seat 12 and the driving block 133. (Since the sliding seat 12 may experience significant forces in the left-right direction, and the driving block 133 is connected to the sliding seat 12 solely by the connecting bolt 15, the strength requirement for the connecting bolt 15 is high; otherwise...) If the connecting bolt 15 is broken or bent, it will affect the accuracy of the sliding seat 12 relative to the mounting seat 11. Additionally, in this embodiment, the lower end of the sliding seat 12 has a recessed groove 122 that mates with the upper end of the driving block 133. The upper end of the driving block 133 is inserted into the recessed groove 122 to connect the upper end of the driving block 133 to the sliding seat 12. (By providing a recessed groove 122 at the lower end of the sliding seat 12 that mates with the upper end of the driving block 133, even if the sliding seat 12 is subjected to a large force in the left-right direction after the upper end of the driving block 133 extends into the recessed groove 122, the driving block 133 will directly bear the corresponding torque.) The connecting bolt 15 makes the connection between the sliding seat 12 and the driving block 133 more convenient, and the recessed groove 122 at the lower end of the sliding seat 12 allows the connection between the sliding seat 12 and the driving block 133 to withstand a larger torque.

[0046] In this embodiment, the mounting hole 121 can be a countersunk hole with its thicker end facing upwards, so that the head of the connecting bolt 15 can be accommodated in the thicker end of the mounting hole 121.

[0047] like Figure 5 and Figure 6 As shown, in this embodiment, the driving end of the linear drive member 13 can slide in the left-right direction to abut against the left and right ends of the movable groove 111. The length of the sliding seat 12 in the left-right direction is L1, the length of the opening of the movable groove 111 in the left-right direction is L2, and the width of the driving end of the linear drive member 13 in the left-right direction is L3, where L1 ≥ 2L2 - L3. This ensures that when the driving end of the linear drive member 13 is connected to the middle position corresponding to the lower end of the sliding seat 12 in the left-right direction, regardless of whether the sliding seat 12 slides to the left or right until its driving end abuts against either end of the movable groove 111, it can guarantee that the sliding seat 12 completely covers the opening of the movable groove 111.

[0048] like Figure 5 and Figure 6As shown, when L1 = 2L2 - L3, when the sliding seat 12 slides to the left on the mounting seat 11 to the limit position, the right end of the sliding seat 12 is flush with the right end of the opening of the movable groove 111. When the sliding seat 12 slides to the right on the mounting seat 11 to the limit position, the left end of the sliding seat 12 is flush with the left end of the opening of the movable groove 111.

[0049] like Figure 1 and Figure 3 As shown, in this embodiment, cleaning strips 18 can be provided at the lower left and lower right ends of the sliding seat 12 to push dust and debris on the mounting base 11 away from the sliding area of ​​the sliding seat 12 (similar to the function of a windshield wiper blade on a car). Specifically, in this embodiment, the cleaning strip 18 includes a clamping strip 181, a flexible strip 182, and multiple mounting bolts 183. The clamping strip 181 is an n-shaped strip (profile part) which is arranged along the front-back direction at the lower end of the corresponding side of the sliding seat 12, with its groove facing downward. The flexible strip 182 can be a rubber strip arranged along the front-back direction, with its upper end inserted into the groove of the clamping strip 181. The lower end of the flexible strip 182 near the sliding seat 12 has a first abutment strip 1821 protruding to engage with the sliding seat 12. The sliding seat 12 abuts against each other. The lower end of the flexible strip 182 facing away from the sliding seat 12 is provided with a scraper 1823 protruding downwards. The scraper 1823 abuts against the upper end of the mounting seat 11 to scrape dust. The lower end of the corresponding side of the sliding seat 12 is provided with a plurality of internally threaded connecting grooves 123 spaced apart in the front-back direction. The plurality of connecting grooves 123 correspond one-to-one with a plurality of mounting bolts 183. Each mounting bolt 183 is aligned with the corresponding connecting groove 123, and each mounting bolt 183 passes through the clamping strip 181 and the flexible strip 182 and is inserted into the connecting groove 123 to be threadedly connected to the connecting groove 123, thereby assembling the entire cleaning scraper 18 onto the sliding seat 12.

[0050] like Figure 3 As shown, in order to prevent the scraper 1823 from being squeezed downwards and forming curled edges during scraping, thus affecting the scraping effect, the lower end of the clamping strip 181 away from the sliding seat 12 can be bent outwards to widen the groove of the clamping strip 181. At this time, a second abutting strip 1822 can be protruded from the lower end of the flexible strip 182 away from the sliding seat 12. The second abutting strip 1822 is located above the scraper 1823, and the second abutting strip 1822 abuts against the lower end of the clamping strip 181 away from the sliding seat 12, so as to lift the scraper 1823 upwards.

[0051] Example 2 like Figure 7 and Figure 8As shown, this embodiment provides a clamp including multiple grippers 2 and a closed gripper seat 1 as described above. At least one gripper 2 is disposed on the mounting base 11 and located to the left or right of the sliding base 12, while the remaining grippers 2 are disposed on the sliding base 12. This allows the closed gripper seat 1 to move the grippers 2 thereon closer to or further away from each other, thereby clamping or releasing the workpiece.

[0052] In this embodiment, the area where the clamping claw 2 is located on the upper end of the mounting base 11 is outside the area where the sliding base 12 slides in the left and right direction.

[0053] like Figure 7 and Figure 8 As shown, in this embodiment, a fixed seat 3 can be provided on the upper end of the mounting base 11 (in this embodiment, the fixed seat 3 is similar in structure to the movable seat, the only difference being that the fixed seat 3 is fixedly provided on the mounting base 11, while the sliding seat 12 is slidably provided on the mounting base 11. At this time, the fixed seat 3 constitutes the area where the gripper 2 is provided on the upper end of the mounting base 11). The fixed seat 3 is located to the left or right of the sliding seat 12. At this time, the gripper 2 provided on the mounting base 11 can be directly provided on the fixed seat 3.

[0054] like Figure 7 and Figure 8 As shown, in this embodiment, the sliding seat 12 is provided with multiple first limiting grooves 124 that are equally spaced along the left and right directions. Similarly, the fixed seat 3 is provided with multiple second limiting grooves 31 that are equally spaced along the left and right directions. The first limiting grooves 124 and the second limiting grooves 31 have the same size and specifications and are both straight strips.

[0055] like Figure 7 and Figure 8 As shown, the gripper 2 includes a base 21 horizontally arranged in the left-right direction and a support column 22 vertically arranged on the upper end of the base 21. The lower end of the base 21 is provided with multiple limiting teeth 211 that are equally spaced in the left-right direction. The first limiting groove 124 and the second limiting groove 31 both cooperate with the limiting teeth 211. The distance between two adjacent limiting teeth 211, the distance between two adjacent first limiting grooves 124, and the distance between two adjacent second limiting grooves 31 are all the same. However, the number of first limiting grooves 124 and second limiting grooves 31 is greater than the number of limiting teeth 211 at the lower end of the gripper 2.

[0056] In this embodiment, at least one gripper 2 can be flexibly placed on both the sliding seat 12 and the fixed seat 3 as needed.

[0057] like Figure 7 and Figure 8 As shown, taking the gripper 2 placed on the fixed base 3 as an example, when the gripper 2 is placed on the fixed base 3, the multiple limiting teeth 211 at its lower end can selectively extend into multiple continuously distributed second limiting grooves 31. At this time, the gripper 2 is already in a limited state relative to the fixed base 3 in the left-right direction, but the position of the gripper 2 in the front-back direction can be adjusted as needed. The way the gripper 2 is placed on the sliding base 12 is similar to the way it is placed on the fixed base 3, and will not be described in detail here.

[0058] like Figure 7 and Figure 9 As shown, in this embodiment, the support column 22 is located at one end corresponding to the upper end of the base 21. At this time, the entire gripper 2 is in an "L" shape. The placement direction of the gripper 2 can also be changed as needed (i.e., the support column 22 is adjusted to be located at the upper left or upper right end of the base 21) so that it can meet the clamping requirements of workpieces of different sizes.

[0059] In this embodiment, at least one gripper 2 can be provided on both the fixed seat 3 and the sliding seat 12.

[0060] In this embodiment, the dust between the sliding seat 12 and the fixed seat 3 can be periodically removed using a vacuum cleaner to prevent dust from accumulating there.

[0061] In this embodiment, the dust and debris are mainly the slag (such as iron filings) generated during machining.

[0062] Example 3 Same as Example 2, except that, as Figure 10 As shown, the fixture provided in this embodiment has two enclosed jaw seats 1 as described in Embodiment 1. The two enclosed jaw seats 1 are arranged in a left-right direction, and at least one jaw 2 is disposed on one of the sliding seats 12, while the remaining jaw 2 is disposed on the other sliding seat 12. This allows the two enclosed jaw seats 1 to respectively drive the jaws 2 on them to move closer to each other or further apart, so as to clamp or release the workpiece.

[0063] In this embodiment, the two mounting bases 11 are integrally formed. This makes the overall structure of the fixture simpler and easier to manufacture.

[0064] In this embodiment, the two lead screws 132 extend out of one end of the corresponding mounting base 11 (i.e., the end assembled with the handle 131) and are far apart from each other.

[0065] In this embodiment, the way the two sliding seats 12 and the gripper 2 cooperate is similar to that in embodiment 2, and will not be described again here.

[0066] Example 4 This embodiment provides a machine tool including the fixture described in Embodiment 2 or Embodiment 3. This machine tool can prevent dust and debris from affecting the linear drive component 13.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A closed-type chuck holder, characterized in that, The device includes a mounting base (11), a sliding base (12), and a linear drive (13). The mounting base (11) is horizontally arranged in the left-right direction, and the upper end of the mounting base (11) is recessed with a strip-shaped movable groove (111) arranged in the left-right direction. The sliding base (12) is attached to the upper end of the mounting base (11) and covers the opening of the movable groove (111). The linear drive (13) is disposed on the mounting base (11), and its driving end is located in the movable groove (111). The driving end of the linear drive (13) is connected to the middle part of the lower end of the sliding base (12). The linear drive (13) is used to drive the sliding base (12) to slide in the left-right direction on the mounting base (11). When the sliding base (12) slides to the left or right limit position, the sliding base (12) covers the opening of the movable groove (111).

2. The enclosed jaw seat according to claim 1, characterized in that, The linear drive component (13) includes a handle (131), a lead screw (132), and a drive block (133). The lead screw (132) is horizontally arranged in the left-right direction within the movable groove (111), and both ends of the lead screw (132) are rotatably connected to both ends of the movable groove (111). Either end of the lead screw (132) passes through the corresponding side of the mounting base (11) to connect with the handle (131). The drive block (133) is placed within the movable groove (111), and the drive block (133) The middle part of 133) is provided with a through hole (1331) that runs from left to right. The through hole (1331) is a threaded hole that is threaded to the lead screw (132). The lead screw (132) passes through the through hole (1331) and is threaded to the drive block (133). The drive block (133) constitutes the drive end of the linear drive (13). The handle (131) drives the lead screw (132) to rotate forward or backward so as to drive the drive block (133) to move in the left and right direction in the movable groove (111).

3. The enclosed jaw seat according to claim 2, characterized in that, Both ends of the lead screw (132) are coaxially provided with a spindle (1321) at the middle. The two spindles (1321) are rotatably connected to both ends of the movable groove (111). Any one of the spindles (1321) passes through the corresponding side of the mounting base (11) to connect with the handle (131). The edges of both ends of the lead screw (132) are close to the corresponding ends of the movable groove (111). Both ends of the movable groove (111) are provided with pressure sensors (14). The sensing end of the pressure sensor (14) abuts against the edge of the corresponding end of the lead screw (132). The two pressure sensors (14) are used to jointly detect the direction and magnitude of the force applied axially by the sliding seat (12) to the lead screw (132).

4. The enclosed jaw seat according to claim 2, characterized in that, It also includes a connecting bolt (15). The upper part of the sliding seat (12) is provided with a through mounting hole (121). The upper end of the drive block (133) is recessed with a connecting hole (1332) that is aligned with the mounting hole (121). The connecting hole (1332) is a threaded hole that mates with the connecting bolt (15). The connecting bolt (15) passes through the mounting hole (121) and is threadedly connected to the connecting hole (1332) to drive the sliding seat (12) and the drive block (133). And / or the lower end of the sliding seat (12) is recessed in the middle and has an embedding groove (122) that cooperates with the upper end of the driving block (133). The upper end of the driving block (133) is inserted into the embedding groove (122) to drive the upper end of the driving block (133) to the sliding seat (12).

5. The enclosed jaw seat according to any one of claims 1-4, characterized in that, The driving end of the linear drive (13) can slide in the left and right direction to abut against the left and right ends of the movable groove (111). The length of the sliding seat (12) in the left and right direction is L1, the length of the groove opening of the movable groove (111) in the left and right direction is L2, and the width of the driving end of the linear drive (13) in the left and right direction is L3. L1≥2L2-L3.

6. The enclosed jaw seat according to any one of claims 1-4, characterized in that, It also includes two limiting strips (16), which are horizontally arranged in the left-right direction and spaced apart in the front-back direction on the mounting base (11). The sliding seat (12) is placed on the mounting base (11) and slidably clamped between the two limiting strips (16). The lower ends of the two limiting strips (16) on the side closer to each other are recessed with sliding grooves (161) distributed in the left-right direction. The two sides of the sliding seat (12) extend into the corresponding sliding grooves (161) to slide the sliding seat (12) on the mounting base (11).

7. A clamp, characterized in that, Includes multiple grippers (2) and a closed gripper seat (1) as described in any one of claims 1-6, wherein at least one of the grippers (2) is disposed on the mounting base (11) and located to the left or right of the sliding base (12), and the remaining grippers (2) are disposed on the sliding base (12).

8. A clamp, characterized in that, It includes multiple grippers (2) and two enclosed gripper seats (1) as described in any one of claims 1-6, the two enclosed gripper seats (1) being arranged in the left-right direction, at least one of the grippers (2) being disposed on one of the sliding seats (12), and the remaining grippers (2) being disposed on the other sliding seat (12).

9. The clamp according to claim 8, characterized in that, The two mounting bases (11) extend into a single unit.

10. A machine tool, characterized in that, Includes the clamp as described in any one of claims 7-9.

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