CNC jig

Abstract

The CNC jig comprises a base, a workbench and two sliding plates, two rotating mechanisms are arranged on the base, the two ends of the workbench are connected with the two rotating mechanisms in a rotating mode respectively, a groove position penetrates through the workbench, an advancing mechanism is arranged on the workbench and comprises a double-thread lead screw and an advancing motor, and the double-thread lead screw is connected with the advancing motor. The double-thread lead screw is rotationally connected with the workbench, the advancing motor is fixedly connected with the workbench, an output shaft of the advancing motor is fixedly connected with the double-thread lead screw, the two sliding plates are connected with two sections of threads of the double-thread lead screw in a matched mode respectively, the sliding plates are connected with the workbench in a sliding mode, and clamping jaws are arranged on the sliding plates. The clamping jaws are close to the groove position, the two clamping jaws are opposite to each other, a driving assembly is arranged on the sliding plate, and the driving assembly is connected with the clamping jaws. The utility model provides a CNC jig. The top or the bottom of a workpiece can be machined in the same clamping process.

Description

TECHNICAL FIELD

[0001] The utility model relates to numerical control processing equipment field especially, it relates to a kind of CNC fixture. BACKGROUND

[0002] Clamp is important one clamping device in CNC machining and production process, to hold processing workpiece, so that workpiece can be firmly fixed in preset position, then carry out cutting and other processing steps.

[0003] In existing CNC fixture is used in three-axis milling machine processing, in once clamping, only the top of workpiece can be processed, when the bottom of workpiece needs to be processed, workpiece is to be disassembled and is adjusted, twice clamping workpiece is needed to re-centering workpiece, so that single workpiece is long in time to process double face. UTILITY MODEL CONTENTS

[0004] The utility model is to provide a kind of CNC fixture, in same once clamping can process the top or bottom of workpiece.

[0005] The utility model discloses a kind of CNC fixture, and the technical scheme adopted is:

[0006] Including base, workbench and two sliding plates, two rotating mechanisms are provided on the base, the two ends of the workbench are respectively rotationally connected with two rotating mechanisms, slot is penetrated on the workbench, travel mechanism is provided on the workbench, the travel mechanism includes double thread screw rod and travel motor, the double thread screw rod is rotationally connected with the workbench, the travel motor is fixedly connected with the workbench, the output shaft of the travel motor is fixedly connected with the double thread screw rod, two the sliding plates are respectively connected with the thread cooperation of two sections of the double thread screw rod, the sliding plate is slidably connected with the workbench, the sliding plate is equipped with clamping jaw, the clamping jaw is close to slot, two The clamping jaws are opposite each other, driving assembly is provided on the sliding plate, and the driving assembly is connected with the clamping jaw.

[0007] As a preferred scheme, the clamping jaw includes connecting seat, lifting plate, upper clamping plate and lower clamping plate, the connecting seat is fixedly connected with the sliding plate, the lifting plate is slidably connected with the connecting seat, the driving assembly is connected with the lifting plate, the adjusting screw rod is rotationally connected on the lifting plate, the upper clamping plate is rotationally connected with the tail end of the adjusting screw rod, the lower clamping plate is fixedly connected with the sliding plate, and the clamping area is formed between the upper clamping plate and the lower clamping plate.

[0008] As a preferred scheme, the travel mechanism is two, two travel mechanisms are symmetrically placed, two travel mechanisms are respectively located on the two sides of the sliding plate, and the connecting portions of the two double thread screw rods and the sliding plate are respectively located on the two sides of the sliding plate.

[0009] As a preferred embodiment, the drive assembly includes a mounting base and a rocker arm. The mounting base is fixedly connected to the slide plate, and a cylinder is rotatably connected to the mounting base. The middle part of the rocker arm is rotatably connected to the mounting base, the output shaft of the cylinder is rotatably connected to one end of the rocker arm, and the other end of the rocker arm is slidably connected to the lifting plate.

[0010] As a preferred embodiment, the skateboard has two drive components.

[0011] As a preferred embodiment, the rotating mechanism includes a column, the bottom of which is fixedly connected to a base, a rotary motor is embedded in the column, and two connectors are fixedly connected to the upper part of the worktable, with the output shaft of the rotary motor fixedly connected to the connectors.

[0012] The beneficial effects of the CNC fixture disclosed in this utility model are:

[0013] The workpiece to be processed is placed between two grippers. The travel motor drives the double-threaded screw to rotate forward, which in turn drives the two slide plates to move closer together, bringing the two grippers closer together. After the drive assembly drives the grippers to clamp the workpiece, the external tool processes the top of the workpiece. After the top is processed, the rotary mechanism drives the worktable to rotate 180° with the workpiece, and the external tool passes through the slot to process the bottom of the workpiece. After the bottom is processed, the rotary mechanism drives the worktable to rotate 180° with the workpiece to reset, thus achieving processing of both sides of the workpiece in one clamping. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a CNC fixture according to this utility model.

[0015] Figure 2 This is a schematic diagram of the worktable of a CNC fixture of this utility model rotated 180°.

[0016] Figure 3 This is a schematic diagram of the worktable structure of a CNC fixture according to this utility model.

[0017] Figure 4 This is a schematic diagram of the traveling mechanism of a CNC fixture according to this utility model.

[0018] Figure 5 This is a schematic diagram of the gripper structure of a CNC fixture according to this utility model.

[0019] Figure 6 This is a schematic diagram of the drive component structure of a CNC fixture according to this utility model.

[0020] Figure 7 This is a cross-sectional view of the worktable and grippers of a CNC fixture according to this utility model. Detailed Implementation

[0021] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings:

[0022] Please refer to Figures 1-3 .

[0023] This utility model discloses a CNC fixture, including a base 1, a worktable 3, and two slides 5.

[0024] The base 1 is provided with two rotating mechanisms 2. In this embodiment, the two rotating mechanisms 2 are preferably located near the two ends of the base 1 respectively. The rotating mechanism 2 includes a column 21. The bottom of the column 21 is fixedly connected to the base 1. A rotating motor is embedded in the column 21. The output shaft of the rotating motor passes through the column 21. In this embodiment, the output shafts of the two rotating motors are preferably located on the same axis.

[0025] Two connectors 31 are fixedly connected to the upper part of the worktable 3. The two connectors 31 are respectively close to the two ends of the worktable 3. The output shaft of the rotary motor is fixedly connected to the connectors 31. The two ends of the worktable 3 are rotatably connected to the two rotary mechanisms 2 through the two connectors 31 respectively. The worktable 3 is located between the two columns 21. The output shafts of the two rotary motors rotate synchronously, driving the worktable 3 to rotate a certain angle.

[0026] Please refer to Figure 3 .

[0027] A slot 32 runs through the workbench 3. In this embodiment, the slot 32 is preferably located at the center of the workbench 3. A traveling mechanism 4 is provided on the workbench 3. In this embodiment, there are preferably two traveling mechanisms 4, which are placed symmetrically and located on both sides of the slot 32. The traveling mechanism 4 includes a double-threaded screw 41, a traveling motor 42, and a traveling guide rail 43. In this embodiment, the two threads of the double-threaded screw 41 are preferably left-hand threads and right-hand threads, respectively. Both ends of the double-threaded screw 41 are rotatably connected to the workbench 3. The traveling motor 42 is fixedly connected to the workbench 3, and the output shaft of the traveling motor 42 is fixedly connected to one end of the double-threaded screw 41. The traveling guide rail 43 is fixedly connected to the workbench 3 and is parallel to the double-threaded screw 41.

[0028] Two slide plates 5 are respectively connected to the two ends of the double threaded screw 41. Two traveling mechanisms 4 are located on both sides of the slide plate 5. The connection points of the two double threaded screws 41 and the slide plate 5 are located on both sides of the slide plate 5. The slide plate 5 is slidably connected to the traveling guide rail 43. The output shaft of the traveling motor 42 drives the double threaded screw 41 to rotate forward or reverse, so that the double threaded screw 41 drives the two slide plates 5 to slide closer to each other or slide further away from each other on the double threaded screw 41.

[0029] Please refer to Figures 4-7.

[0030] Four guide rails 33 are fixedly connected to the workbench 3. The four guide rails 33 are respectively close to both ends of the workbench 3. Each end of the workbench 3 has two guide rails 33. The four guide rails 33 are parallel to each other. The slide plate 5 is slidably connected to the guide rails. The slide plate 5 is provided with a gripper 6. The gripper 6 is close to the slot 32. The two grippers 6 are opposite to each other. The gripper 6 includes a connecting seat 61, a lifting plate 62, an upper clamping plate 63 and a lower clamping plate 64. The bottom of the connecting seat 61 is fixedly connected to the top of the slide plate 5. Two symmetrical lifting rails 611 are fixedly connected to the connecting seat 61. The two lifting rails 611 are parallel to each other. The slide plate 5 is placed between the two lifting rails 611. The slide plate 5 and the connecting seat 61 are slidably connected through the two lifting rails 611.

[0031] Furthermore, an adjusting screw 621 is rotatably connected to the lifting plate 62. In this embodiment, it is preferred that there are two adjusting screws 621, which pass through the lifting plate 62. One end of the adjusting screw 621 is fixedly connected to a handwheel, which is located above the lifting plate 62. The other end of the adjusting screw 621 is rotatably connected to the upper clamping plate 63. The lower clamping plate 64 is fixedly connected to the slide plate 5. A clamping area is formed between the upper clamping plate 63 and the lower clamping plate 64. The two lower clamping plates 64 are horizontally parallel to each other, so that the two clamping areas are located on the same horizontal plane. By rotating the handwheel, the adjusting screw 621 is driven to rotate forward or backward, which drives the upper clamping plate 63 to descend or rise a certain height, so that the height of the clamping area becomes longer or shorter, allowing the gripper 6 to adapt to workpieces of different sizes. In this embodiment, it is preferred that the height of the clamping area after adjustment only needs to be 5 mm higher than the workpiece, so that the gripper 6 can smoothly release or clamp the workpiece.

[0032] The slide plate 5 is equipped with a drive assembly 7. In this embodiment, it is preferred that there are two drive assemblies 7 on the slide plate 5. The drive assembly 7 is connected to the gripper 6 and the lifting plate 62. The drive assembly 7 includes a mounting base 71 and a rocker arm 711. The mounting base 71 is fixedly connected to the slide plate 5. A cylinder 72 is rotatably connected to the mounting base 71. The middle part of the rocker arm 711 is rotatably connected to the mounting base 71. The output shaft of the cylinder 72 is rotatably connected to one end of the rocker arm 711. The other end of the rocker arm 711 is slidably connected to the lifting plate 62. A sliding groove runs through one side of the rocker arm 711. The sliding groove is close to the other end of the rocker arm 711. Two connecting columns are fixedly connected to the lifting plate 62. The connecting columns are placed in the sliding groove and make sliding contact. The output shaft of the cylinder 72 pushes or pulls the rocker arm 711 to rotate on the mounting base 71, so that the rocker arm 711 pries the lifting plate 62 to slide up or down on the connecting base 61, so that the gripper 6 can clamp or release the workpiece.

[0033] Please refer to Figures 1-7 .

[0034] The workpiece to be processed is placed between two grippers 6. The traveling mechanism 4 drives two sliding plates 5 to slide closer to the workpiece, so that both ends of the workpiece are placed in the two clamping areas respectively. The drive assembly 7 drives the lifting plate 62 to descend, so that the grippers 6 can clamp the workpiece. The external tool processes the top of the workpiece. After the processing of the top of the workpiece is completed, the rotating mechanism 2 drives the worktable 3 to rotate 180°. The external tool passes through the slot 32 to process the bottom of the workpiece. After the processing of the bottom of the workpiece is completed, the rotating mechanism 2 drives the worktable 3 to rotate another 180° to reset. The drive assembly 7 drives the grippers 6 to release the workpiece. The traveling mechanism 4 drives the two sliding plates 5 to slide away from the workpiece, making it easier for the worker to remove the processed workpiece.

[0035] This utility model provides a CNC fixture. The workpiece to be processed is placed between two grippers. A travel motor drives a double-threaded screw to rotate forward, which in turn drives two sliding plates to move closer together, causing the two grippers to move closer together. After the drive assembly drives the grippers to clamp the workpiece, an external tool processes the top of the workpiece. After the top is processed, a rotary mechanism drives the worktable to rotate 180° with the workpiece, and the external tool passes through the slot to process the bottom of the workpiece. After the bottom is processed, the rotary mechanism drives the worktable to rotate 180° with the workpiece to reset, thus realizing the processing of both sides of the workpiece in one clamping.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A CNC fixture, characterized in that, Includes a base, a worktable, and two slides; The base is provided with two rotating mechanisms, and the two ends of the worktable are respectively rotatably connected to the two rotating mechanisms. The worktable has through slots and a traveling mechanism. The traveling mechanism includes a double-threaded lead screw and a traveling motor. The double-threaded lead screw is rotatably connected to the worktable, the traveling motor is fixedly connected to the worktable, and the output shaft of the traveling motor is fixedly connected to the double-threaded lead screw. The two slide plates are respectively connected to the two threaded sections of the double-threaded lead screw. The slide plates are slidably connected to the worktable. The slide plates are equipped with grippers. The grippers are close to the slots. The two grippers are opposite to each other. The slide plates are equipped with a drive assembly, which is connected to the grippers.

2. The CNC fixture as described in claim 1, characterized in that, The gripper includes a connecting seat, a lifting plate, an upper clamping plate, and a lower clamping plate. The connecting seat is fixedly connected to the slide plate, the lifting plate is slidably connected to the connecting seat, the drive assembly is connected to the lifting plate, an adjusting screw is rotatably connected to the lifting plate, the upper clamping plate is rotatably connected to the end of the adjusting screw, the lower clamping plate is fixedly connected to the slide plate, and a clamping area is formed between the upper clamping plate and the lower clamping plate.

3. A CNC fixture as described in claim 2, characterized in that, There are two traveling mechanisms, which are placed symmetrically and located on both sides of the slide plate. The connection points of the two double-threaded screws with the slide plate are located on both sides of the slide plate.

4. A CNC fixture as described in claim 3, characterized in that, The drive assembly includes a mounting base and a rocker arm. The mounting base is fixedly connected to the slide plate. A cylinder is rotatably connected to the mounting base. The middle part of the rocker arm is rotatably connected to the mounting base. The output shaft of the cylinder is rotatably connected to one end of the rocker arm. The other end of the rocker arm is slidably connected to the lifting plate.

5. A CNC fixture as described in claim 4, characterized in that, The skateboard has two drive components.

6. A CNC fixture as described in claim 5, characterized in that, The rotating mechanism includes a column, the bottom of which is fixedly connected to a base. A rotary motor is embedded in the column. Two connectors are fixedly connected to the upper part of the worktable. The output shaft of the rotary motor is fixedly connected to the connectors.

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