Multi-purpose clamp

Abstract

The utility model relates to a multipurpose clamp, which belongs to the technical field of CNC (computer numerical control) machine tool clamps and comprises a worktable, mounting parts mounted on the left side and the right side of the worktable, eight workpiece placing grooves mounted at the top of the worktable and a positioning structure arranged on the worktable. According to the multi-purpose clamp, eight sets of positioning structures are arranged, an electric push rod in a lifting component is used for controlling a supporting frame to move downwards, then the moving supporting frame is used for driving a pressing assembly to move downwards through a connecting column, and a workpiece is pressed into a workpiece containing groove through a rubber roller in the pressing assembly; and after machining is completed, the initial position of the pressing assembly is restored, the feeding component is started, the connecting column is controlled to rotate through mechanical transmission, and therefore the pressing assembly on the connecting column rotates by 90 degrees, and the pressing assembly on the connecting column rotates by 90 degrees. The rubber roller is prevented from blocking workpiece replacement.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC machine tool clamps, in particular to a multi-purpose clamp. Background Art

[0002] CNC machine tool fixtures are devices used to fix the workpiece during the CNC machining process and keep it in the correct position for precise machining. Universal fixtures include three-jaw chucks, four-jaw chucks and flat-nose pliers, which are one of the most common universal fixtures. Among them, three-jaw chucks and four-jaw chucks clamp round or cylindrical workpieces with simultaneously movable jaws. They have self-centering functions and can clamp workpieces quickly and accurately. They are suitable for workpieces of various diameters. Flat-nose pliers are mainly used to clamp rectangular or flat workpieces. They have large clamping force and good stability and are suitable for the machining of small workpieces. Special fixtures are fixtures designed for specific workpieces or machining tasks. They are highly targeted and professional.

[0003] In the prior art, the universal clamp in the CNC machine tool clamp can only clamp a certain workpiece, so that the CNC machine tool can only process a single workpiece. After each processing is completed, the processed workpiece needs to be taken out and replaced with the workpiece to be processed. As a result, when processing a large number of workpieces, the workers need to repeatedly replace the workpieces, which increases the labor intensity of the workers and affects the efficiency of the CNC machine tool in processing workpieces. Therefore, a multi-purpose clamp is proposed to solve the above problem. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention provides a multi-purpose clamp with the advantage of fixing multiple workpieces, solving the problem that the universal clamp in the CNC machine tool clamp can only clamp a certain workpiece, so that the CNC machine tool can only process a single workpiece. After each processing is completed, the processed workpiece needs to be taken out and then replaced with the workpiece to be processed. As a result, when processing a large number of workpieces, the staff needs to repeatedly replace the workpieces, which increases the labor intensity of the staff and affects the efficiency of the CNC machine tool in processing workpieces.

[0005] In summary, the present invention provides the following technical solutions: a multi-purpose clamp, comprising a workbench, mounting components mounted on the left and right sides of the workbench, eight workpiece placement slots mounted on the top of the workbench, and a positioning structure provided on the workbench;

[0006] The positioning structure includes a support frame slidably mounted inside the workbench, a connecting column rotatably mounted on the bottom wall of the support frame and with one end passing through the support frame and extending to the top of the workbench, a clamping assembly fixedly mounted on the connecting column and used to clamp the workpiece to be processed, a guide component mounted inside the workbench and used to limit the sliding trajectory of the support frame, a lifting component mounted inside the workbench and used to control the up and down movement of the support frame, a gear ring fixedly mounted on the outer surface of the connecting column and located inside the support frame, and a driving unit provided inside the support frame and used to drive the gear ring to rotate;

[0007] The driving unit includes a rack slidably mounted inside the support frame and meshing with the outer edge of the gear ring, a limiting component mounted on the rear side wall of the inner cavity of the support frame and used to limit the left and right sliding trajectory of the rack, and a feeding component fixedly mounted on the bottom wall of the support frame and used to drive the rack to move.

[0008] The utility model adopts the above technical solution, realizes the use of the lifting component to control the support frame to move downward, and then uses the movable support frame to drive the clamping assembly to move downward through the connecting column, uses the clamping assembly to clamp the workpiece in the workpiece placement groove, and then shuts down the lifting component to replace the general clamp to fix the workpiece to be processed. After the processing is completed, the initial position of the clamping assembly can be restored, the feed component can be started, and the connecting column can be controlled to rotate through mechanical transmission, so that the clamping assembly on the connecting column can be rotated ninety degrees to avoid blocking the replacement of the workpiece, thereby realizing the simultaneous fixation of multiple workpieces and the replacement of processed workpieces in the same batch.

[0009] Furthermore, the pressing assembly includes a connecting sleeve fixedly mounted on the outer surface of the connecting column, a rubber roller fixedly mounted on the outer surface of the connecting sleeve, and a pressure sensor mounted on the rubber roller and electrically connected to the lifting component.

[0010] The beneficial effect of adopting the above further solution is that it is convenient to use the rubber roller to press the workpiece and trigger the pressure sensor to achieve the control of the shutdown of the lifting component.

[0011] Furthermore, the mounting component includes two connecting plates and two mounting bolts, one end of the two mounting bolts respectively passes through the two connecting plates, the two connecting plates are respectively fixedly connected to the left and right sides of the workbench, and the eight workpiece placement slots are all fixedly installed on the top of the workbench, and the number of the positioning structures is the same as the workpiece placement slots.

[0012] The beneficial effect of adopting the above further solution is that it is convenient to fix the workbench on the CNC machine tool through the installation components.

[0013] Furthermore, the guide component includes a guide plate and a connecting frame, the guide plate is fixedly installed between the inner top wall and the inner bottom wall of the workbench, the connecting frame is fixedly installed on the back of the support frame, and the outer surface of the guide plate is slidably connected to the inner wall of the connecting frame.

[0014] The beneficial effect of adopting the above further solution is that it is easy to limit the support frame to move up and down only in the direction of the guide plate.

[0015] Furthermore, the lifting component includes two electric push rods, and four mounting slots are opened on the support frame. The electric push rods are fixedly installed in the mounting slots and one end passes through and extends to the outside of the support frame. The telescopic ends of the two electric push rods are respectively fixedly connected to the inner bottom wall of the workbench.

[0016] The beneficial effect of adopting the above further solution is that it is convenient to utilize the extension and retraction of the electric push rod to control the up and down movement of the support frame.

[0017] Furthermore, a circular groove is provided on the top of the support frame, a through hole is provided on the workbench, one end of the connecting column passes through the circular groove and the through hole, the circular groove is rotatably connected to the outer surface of the connecting column at the inner wall of the through hole, and the number of the through holes is the same as the number of the connecting columns.

[0018] The beneficial effect of adopting the above further solution is that it facilitates the rotation of the connecting column on the workbench.

[0019] Furthermore, the limiting component includes a limiting bar, which is fixedly installed on the rear side wall of the inner cavity of the support frame. A limiting groove is opened on the back of the rack, and the outer surface of the limiting bar is slidably connected to the inner wall of the limiting groove.

[0020] The beneficial effect of adopting the above further solution is that the rack is restricted to move left and right only on the outer surface of the limiting strip.

[0021] Furthermore, the feeding component includes a mounting frame, a hydraulic cylinder and a connecting block. The mounting frame is fixedly installed on the inner bottom wall of the support frame, the hydraulic cylinder is fixedly installed on the mounting frame, the telescopic end of the hydraulic cylinder is fixedly connected to the connecting block, and the top of the connecting block is fixedly connected to the bottom of the rack.

[0022] The beneficial effect of adopting the above further solution is that it is convenient to control the left and right movement of the rack by utilizing the extension and contraction of the hydraulic cylinder.

[0023] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0024] The multi-purpose clamp is provided with eight groups of positioning structures, which realizes the use of the electric push rod in the lifting component to control the support frame to move downward, and then the use of the movable support frame to drive the clamping assembly to move downward through the connecting column, and the use of the rubber roller in the clamping assembly to press the workpiece into the workpiece placement groove, thereby triggering the pressure sensor on the rubber roller and shutting down the electric push rod, thereby replacing the general clamp to fix the workpiece to be processed. After the processing is completed, the initial position of the clamping assembly can be restored, the feed component can be started, and the connecting column can be controlled to rotate through mechanical transmission, so that the clamping assembly on the connecting column is rotated ninety degrees, thereby avoiding the rubber roller blocking the replacement of the workpiece, thereby enhancing the practicality of the multi-purpose clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the utility model;

[0026] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0027] Figure 3 It is a three-dimensional schematic diagram of the structural support frame and guide components of the utility model.

[0028] Description of reference numerals:

[0029] 1. Workbench; 2. Mounting parts; 3. Workpiece placement groove; 41. Support frame; 42. Connecting column; 43. Clamping assembly; 44. Guide part; 45. Lifting part; 46. Gear ring; 47. Rack; 48. Limiting part; 49. Feeding part. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figures 1 to 3 The multi-purpose clamp in this embodiment includes a workbench 1, a mounting component 2 installed on the left and right sides of the workbench 1, eight workpiece placement slots 3 installed on the top of the workbench 1, and a positioning structure arranged on the workbench 1. The mounting component 2 includes two connecting plates and two mounting bolts. One end of the two mounting bolts passes through the two connecting plates respectively, and the two connecting plates are fixedly connected to the left and right sides of the workbench 1 respectively. The eight workpiece placement slots 3 are all fixedly installed on the top of the workbench 1. The number of positioning structures is the same as the workpiece placement slots 3, which is convenient for fixing eight workpieces at the same time.

[0032] Among them, it is convenient to utilize the eight workpiece placement slots 3 and the positioning structure to realize the processing of eight workpieces in the same batch, thereby improving the efficiency of workpiece processing, and replacing the staff to position and fix all eight workpieces at one time, thereby reducing the labor intensity of the staff and reducing unnecessary repetitive operations of the staff.

[0033] See also Figures 1 to 3 In this embodiment, the positioning structure includes a support frame 41 slidably mounted inside the workbench 1, a connecting column 42 rotatably mounted on the inner bottom wall of the support frame 41 and one end passing through the support frame 41 and extending to the top of the workbench 1, a clamping assembly 43 fixedly mounted on the connecting column 42 and used to clamp the workpiece to be processed, a guide component 44 mounted inside the workbench 1 and used to limit the sliding trajectory of the support frame 41, a lifting component 45 mounted inside the workbench 1 and used to control the up and down movement of the support frame 41, a gear ring 46 fixedly mounted on the outer surface of the connecting column 42 and located inside the support frame 41, and a driving unit arranged inside the support frame 41 and used to drive the gear ring 46 to rotate. A circular groove is provided on the top of the support frame 41, and a through hole is provided on the workbench 1. One end of the connecting column 42 passes through the circular groove and the through hole. The circular groove is rotatably connected to the outer surface of the connecting column 42 at the inner wall of the through hole. The number of through holes is the same as the number of connecting columns 42, so that the connecting column 42 can rotate on the workbench 1.

[0034] Among them, the clamping assembly 43 includes a connecting sleeve fixedly installed on the outer surface of the connecting column 42, a rubber roller fixedly installed on the outer surface of the connecting sleeve, and a pressure sensor installed on the rubber roller and electrically connected to the lifting component 45, so as to facilitate the use of the rubber roller to stably press the workpiece in the workpiece placement groove 3, while avoiding scratching the workpiece surface during the clamping process.

[0035] In addition, the guide component 44 includes a guide plate and a connecting frame. The guide plate is fixedly installed between the inner top wall and the inner bottom wall of the workbench 1, and the connecting frame is fixedly installed on the back of the support frame 41. The outer surface of the guide plate and the inner wall of the connecting frame are slidably connected to limit the support frame 41 to move up and down only along the direction of the guide plate, and provide a reliable support effect for the support frame 41 to slide up and down.

[0036] It should be noted that the lifting component 45 includes two electric push rods, and four mounting slots are opened on the support frame 41. The electric push rods are fixedly installed in the mounting slots and one end passes through and extends to the outside of the support frame 41. The telescopic ends of the two electric push rods are respectively fixedly connected to the inner bottom wall of the workbench 1, so that the support frame 41 can be driven up and down by the telescopic movement of the electric push rods.

[0037] By adopting the above technical solution, it is possible to control the rotation of the gear ring 46 by using the driving unit, thereby controlling the connecting column 42 and driving the clamping assembly 43 to rotate synchronously, so that the rubber roller in the clamping assembly 43 rotates to directly above the workpiece, and then the electric push rod in the lifting component 45 is started, so that the electric push rod contracts and drives the support frame 41 to move downward along the direction of the guide plate, so that the moving support frame 41 drives the connecting column 42 and the rubber roller to move downward synchronously until the rubber roller presses the workpiece.

[0038] See also Figures 1 to 3 In this embodiment, the driving unit includes a rack 47 that is slidably installed inside the support frame 41 and meshes with the outer edge of the gear ring 46, a limiting component 48 that is installed on the rear side wall of the inner cavity of the support frame 41 and is used to limit the left and right sliding trajectory of the rack 47, and a feeding component 49 that is fixedly installed on the inner bottom wall of the support frame 41 and is used to drive the rack 47 to move.

[0039] Among them, the limiting component 48 includes a limiting bar, which is fixedly installed on the rear side wall of the inner cavity of the support frame 41. A limiting groove is opened on the back of the rack 47. The outer surface of the limiting bar is slidably connected to the inner wall of the limiting groove, so as to limit the rack 47 to move left and right only on the outer surface of the limiting bar.

[0040] In addition, the feeding component 49 includes a mounting frame, a hydraulic cylinder and a connecting block. The mounting frame is fixedly installed on the inner bottom wall of the support frame 41, and the hydraulic cylinder is fixedly installed on the mounting frame. The telescopic end of the hydraulic cylinder is fixedly connected to the connecting block, and the top of the connecting block is fixedly connected to the bottom of the rack 47, so that the hydraulic cylinder can be used to control the left and right movement of the rack 47.

[0041] By adopting the above technical solution, eight workpieces to be processed are placed in the workpiece placement groove 3, and then the hydraulic cylinder in the feed component 49 is started, so that the hydraulic cylinder drives the rack 47 to move to the right on the outer surface of the limit bar through the connecting block, so that the moving rack 47 drives the gear ring 46 engaged with it to rotate.

[0042] The working principle of the above embodiment is:

[0043] When using this multi-purpose clamp, eight workpieces to be processed are placed in the workpiece placement slot 3, and then the hydraulic cylinder in the feed component 49 is started, so that the hydraulic cylinder drives the rack 47 to move to the right on the outer surface of the limit bar through the connecting block, so that the moving rack 47 drives the gear ring 46 engaged with it to rotate, thereby controlling the connecting column 42 and driving the clamping component 43 to rotate synchronously, so that the rubber roller in the clamping component 43 rotates to directly above the workpiece, and then the electric push rod in the lifting component 45 is started, so that the electric push rod contracts and drives the support frame 41 to move downward along the direction of the guide plate, so that the moving support frame 41 drives the connecting column 42 and the rubber roller to move downward synchronously until the rubber roller presses the workpiece.

[0044] When it is necessary to remove the processed workpiece, the electric push rod in the lifting component 45 is started and drives the support frame 41 and the connecting column 42 to move upward synchronously, so that the moving connecting column 42 drives the rubber roller to move, thereby releasing the pressing state of the workpiece, and then the rack 47 is driven to move by the hydraulic cylinder, and the rack 47 is used to drive the gear ring 46 engaged with it to rotate, so that the connecting column 42 drives the rubber roller to rotate until the rubber roller rotates to one side to avoid blocking the staff from removing the processed workpiece.

Claims

1. A multi-purpose clamp, characterized by: It comprises a workbench (1), mounting components (2) mounted on the left and right sides of the workbench (1), eight workpiece placement slots (3) mounted on the top of the workbench (1), and a positioning structure arranged on the workbench (1); The positioning structure includes a support frame (41) slidably mounted inside the workbench (1), a connecting column (42) rotatably mounted on the inner bottom wall of the support frame (41) and with one end penetrating the support frame (41) and extending to the top of the workbench (1), a clamping assembly (43) fixedly mounted on the connecting column (42) and used for clamping the workpiece to be processed, a guide component (44) mounted inside the workbench (1) and used for limiting the sliding trajectory of the support frame (41), a lifting component (45) mounted inside the workbench (1) and used for controlling the upward and downward movement of the support frame (41), a gear ring (46) fixedly mounted on the outer surface of the connecting column (42) and located inside the support frame (41), and a driving unit arranged inside the support frame (41) and used for driving the gear ring (46) to rotate; The driving unit includes a rack (47) slidably mounted inside the support frame (41) and meshing with the outer edge of the gear ring (46), a limiting component (48) mounted on the rear side wall of the inner cavity of the support frame (41) and used to limit the left and right sliding trajectory of the rack (47), and a feeding component (49) fixedly mounted on the inner bottom wall of the support frame (41) and used to drive the rack (47) to move.

2. The multi-purpose clamp according to claim 1, characterized in that: The pressing assembly (43) includes a connecting sleeve fixedly mounted on the outer surface of the connecting column (42), a rubber roller fixedly mounted on the outer surface of the connecting sleeve, and a pressure sensor mounted on the rubber roller and electrically connected to the lifting component (45).

3. The multi-purpose clamp according to claim 1, characterized in that: The mounting component (2) includes two connecting plates and two mounting bolts, one end of each of the two mounting bolts passes through the two connecting plates, and the two connecting plates are fixedly connected to the left and right sides of the workbench (1), respectively. The eight workpiece placement slots (3) are all fixedly mounted on the top of the workbench (1), and the number of the positioning structures is the same as the number of the workpiece placement slots (3).

4. The multi-purpose clamp according to claim 1, characterized in that: The guide component (44) includes a guide plate and a connecting frame, wherein the guide plate is fixedly mounted between the inner top wall and the inner bottom wall of the workbench (1), and the connecting frame is fixedly mounted on the back of the support frame (41), and the outer surface of the guide plate is slidably connected to the inner wall of the connecting frame.

5. The multi-purpose clamp according to claim 1, characterized in that: The lifting component (45) includes two electric push rods. Four mounting slots are provided on the support frame (41). The electric push rods are fixedly installed in the mounting slots and one end thereof passes through and extends to the outside of the support frame (41). The telescopic ends of the two electric push rods are respectively fixedly connected to the inner bottom wall of the workbench (1).

6. The multi-purpose clamp according to claim 1, characterized in that: A circular groove is provided on the top of the support frame (41), a through hole is provided on the workbench (1), one end of the connecting column (42) passes through the circular groove and the through hole, the inner wall of the circular groove and the through hole are rotatably connected to the outer surface of the connecting column (42), and the number of the through holes is the same as the number of the connecting columns (42).

7. The multi-purpose clamp according to claim 2, characterized in that: The limiting component (48) includes a limiting strip, which is fixedly mounted on the rear side wall of the inner cavity of the support frame (41). A limiting groove is provided on the back of the rack (47), and the outer surface of the limiting strip is slidably connected to the inner wall of the limiting groove.

8. The multi-purpose clamp according to claim 2, characterized in that: The feeding component (49) includes a mounting frame, a hydraulic cylinder and a connecting block, wherein the mounting frame is fixedly mounted on the inner bottom wall of the support frame (41), the hydraulic cylinder is fixedly mounted on the mounting frame, the telescopic end of the hydraulic cylinder is fixedly connected to the connecting block, and the top of the connecting block is fixedly connected to the bottom of the rack (47).

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