CNC positioning auxiliary jig

Abstract

The utility model discloses a CNC positioning auxiliary jig, and relates to the technical field of CNC machining. Comprising a bottom plate, a moving mechanism is installed on the bottom plate, lifting mechanisms used for adjusting the height of a workpiece are installed at the two ends of the outer wall of the top of the moving mechanism correspondingly, rotating mechanisms used for turning over the workpiece are installed on the lifting mechanisms correspondingly, a containing plate is arranged at the top of the bottom plate, and notches are formed in the outer walls of the two ends of the containing plate correspondingly; and a correcting mechanism is installed on the containing plate, the rotating mechanism comprises a fixed circular plate, and the outer walls of the two ends of the fixed circular plate are rotationally connected with a rotating circular block and a groove block correspondingly. Through the arrangement of the rotating mechanism and the lifting mechanism, the workpiece can be turned over quickly, the situation that when the workpiece is turned over, workers need to take down and turn over the workpiece manually and then reset the workpiece is avoided, the work efficiency is improved, the workload of the workers is reduced, the operation process of turning over the workpiece is simple, and the work efficiency is improved. The operation is easy.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, specifically to a CNC positioning auxiliary fixture. Background Technology

[0002] CNC machine tools are machine tools that perform machining through computer control, enabling high-precision and high-efficiency processing. They are widely used in various industries, such as aerospace, automobile manufacturing, and mold processing. During the operation of CNC machine tools, positioning auxiliary fixtures are often used to fix the workpiece. Positioning auxiliary fixtures are tools used to help position and fix workpieces, and are usually used in the machining and assembly process. They can improve production efficiency, reduce human error, and ensure product quality.

[0003] A CNC machining positioning fixture, disclosed in patent publication number CN220260285U, includes a base. An electric telescopic rod assembly and a support plate are mounted on the upper surface of the base. A hydraulic cylinder is fixedly installed near the upper end of the outer surface of the two sets of support plates facing away from each other. A hydraulic rod is installed through the middle of the hydraulic cylinder. A clamping support is fixedly installed at one end of the hydraulic rod extending to the opposite side of the two sets of support plates. The advantages of this invention are: when the hydraulic cylinder is activated, the hydraulic rod drives the clamping support to move laterally under hydraulic pressure. When the two sets of clamping supports move to the appropriate position, the bottom of the clamping support supports holds and fixes the workpiece. Furthermore, after the guide rod extends through the storage hole via a compression spring, the clamping plate clamps the upper end of the workpiece under the elastic action of the compression spring. This facilitates the positioning of workpieces with different specifications and parameters. The application of this fixture effectively avoids the aforementioned problems and improves the practicality of the equipment.

[0004] However, in actual use, when processing workpieces, such positioning fixtures do not have the function of flipping the workpiece. Therefore, when processing the other side of the workpiece, the operator needs to manually remove the workpiece, flip it over, and then put it back into the fixture. This manual flipping and repositioning process is cumbersome and increases the workload of the operator, which is not conducive to improving work efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a CNC positioning auxiliary fixture to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a CNC positioning auxiliary fixture, comprising a base plate, a moving mechanism mounted on the base plate, lifting mechanisms for adjusting workpiece height mounted at both ends of the top outer wall of the moving mechanism, and a rotating mechanism for flipping the workpiece mounted on each lifting mechanism, a placement plate provided on the top of the base plate, slots opened at both ends of the outer wall of the placement plate, and a correction mechanism mounted on the placement plate, the rotating mechanism comprising a fixed circular plate, a rotating circular block and a slotted block rotatably connected to the two ends of the fixed circular plate respectively, a gripping handle mounted on the rotating circular block, a clamping mechanism for fixing and limiting the workpiece mounted on the slotted block, and a locking mechanism for fixing the position of the clamping mechanism mounted on the slotted block and the fixed circular plate.

[0007] Preferably, the moving mechanism includes two T-shaped blocks, and the top outer wall of the base plate has a horizontal groove. A first bidirectional threaded rod driven by a drive motor is rotatably connected in the horizontal groove, and the two T-shaped blocks are respectively sleeved on the outer walls of the two ends of the first bidirectional threaded rod.

[0008] Preferably, the lifting mechanism includes an electric push rod installed on the top outer wall of the T-shaped block, first telescopic rods installed on both sides of the T-shaped block, a fixed block fixedly connected to one end of the piston rod of the electric push rod and the first telescopic rod, and a fixed circular plate installed on the fixed block.

[0009] Preferably, the clamping mechanism includes two clamping plates, each clamping surface of which is fixedly connected to a rubber plate. A vertical groove is opened on the outer wall of the groove block, and a second bidirectional threaded rod driven by a second rotating block is rotatably connected in the vertical groove. The two clamping plates are respectively sleeved on the top and bottom of the outer wall of the second bidirectional threaded rod.

[0010] Preferably, the locking mechanism includes two locking hole plates respectively installed on the top and bottom of the slot block. The fixed circular plate corresponding to the slot block has two circular holes that are adapted to the holes in the locking hole plates. Each circular hole is provided with a limit pin, and the limit pins are inserted into the circular holes through the locking hole plates.

[0011] Preferably, the correction mechanism includes two correction blocks, and the top outer wall of the placement plate has a sliding groove. A third bidirectional threaded rod driven by a first rotating block is installed in the sliding groove, and the two correction blocks are respectively sleeved on the two outer walls of the third bidirectional threaded rod.

[0012] Preferably, an mounting plate is installed in the middle of the top outer wall of the base plate, and two second telescopic rods are installed at both ends of the top outer wall of the base plate. A hydraulic cylinder is installed on the top outer wall of the mounting plate, and one end of the piston rod of the hydraulic cylinder and the second telescopic rod is fixedly connected to the bottom outer wall of the placement plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This CNC positioning auxiliary fixture, through the setting of a rotation mechanism and a lifting mechanism, can quickly flip the workpiece, avoiding the need for the operator to manually remove the workpiece and reset it after flipping. This improves work efficiency and reduces the workload of the operator. Moreover, the operation of flipping the workpiece is simple and easy to learn.

[0015] Meanwhile, the locking mechanism can lock the position of the slot block to prevent it from rotating and affecting the processing of the workpiece. The rubber plate increases friction and acts as a buffer when clamping the workpiece, which helps protect it. The first and second telescopic rods make the lifting and lowering of the slot block, its components, and the placement plate more stable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the moving mechanism structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the lifting mechanism structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the clamping mechanism of this utility model.

[0020] In the diagram: 1. Base plate; 2. Moving mechanism; 201. Drive motor; 202. T-block; 203. First bidirectional threaded rod; 3. Lifting mechanism; 301. First telescopic rod; 302. Electric push rod; 303. Fixed block; 4. Rotating mechanism; 401. Handle; 402. Rotating round block; 403. Fixed round plate; 404. Groove block; 5. Locking mechanism; 501. Locking hole plate; 502. Round hole; 503. Limit pin; 6. Clamping mechanism; 601. Second rotating block; 602. Vertical groove; 603. Second bidirectional threaded rod; 604. Clamping plate; 605. Rubber plate; 7. Correction mechanism; 701. First rotating block; 702. Third bidirectional threaded rod; 703. Correction block; 8. Placement plate; 9. Groove; 10. Second telescopic rod; 11. Hydraulic cylinder; 12. Mounting plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the process of CNC machine tool processing, positioning auxiliary fixtures are required. The positioning auxiliary fixture provided by this utility model is specifically used for auxiliary positioning, fixing and flipping of workpieces in CNC machining. When using this device to assist in positioning and flipping of workpieces, it is necessary to ensure the cleanliness of the working environment and to power the equipment that needs power in the device in advance, so as to ensure the normal operation of the equipment.

[0023] like Figures 1-4 As shown, this utility model provides a technical solution: a CNC positioning auxiliary fixture, including a base plate 1, a moving mechanism 2 installed on the base plate 1, lifting mechanisms 3 for adjusting the height of the workpiece installed at both ends of the top outer wall of the moving mechanism 2, a rotating mechanism 4 for flipping the workpiece installed on the lifting mechanism 3, a placement plate 8 provided on the top of the base plate 1, slots 9 opened at both ends of the outer wall of the placement plate 8, a correction mechanism 7 installed on the placement plate 8, the rotating mechanism 4 including a fixed circular plate 403, a rotating circular block 402 and a slot block 404 respectively rotatably connected to the outer walls of both ends of the fixed circular plate 403, a gripping handle 401 installed on the rotating circular block 402, a clamping mechanism 6 for fixing and limiting the workpiece installed on the slot block 404, and a locking mechanism 5 for fixing the position of the clamping mechanism 6 installed on the slot block 404 and the fixed circular plate 403.

[0024] It should be noted that there are two lifting mechanisms 3, rotating mechanisms 4, locking mechanisms 5, and clamping mechanisms 6, located at both ends of the top outer wall of the base plate 1. When positioning a workpiece, the worker places the workpiece on top of the placement plate 8, and the position of the workpiece is initially adjusted by adjusting the correction mechanism 7. Then, the moving mechanism 2 adjusts the two clamping mechanisms 6 to contact the workpiece, further adjusting the position of the workpiece to make it level. The clamping mechanisms 6 then clamp the workpiece, making it more stable and less prone to shaking during processing, thus completing the workpiece positioning. When it is necessary to flip the workpiece, the lifting mechanism 3 is activated to raise the height of the clamping mechanisms 6 to their maximum height. The worker releases the locking mechanism 5 to fix the position of the clamping mechanism 6, and then rotates any one of the grips 401 to rotate the rotating block 402. This rotates one of the slot blocks 404 and the clamping mechanism 6 on the slot block 404. Through the action of the workpiece itself, the other slot block 404 and the clamping mechanism 6 on the slot block 404 can be rotated, thus rotating the workpiece. After rotating 180 degrees, the workpiece can be flipped, which helps reduce the workload of the worker and improves work efficiency. After the workpiece is flipped, the worker uses the locking mechanism 5 to fix the position of the clamping mechanism 6, and then the height of the workpiece is reset by starting the lifting mechanism 3.

[0025] like Figure 2 As shown, the moving mechanism 2 includes two T-shaped blocks 202. A horizontal groove is opened on the top outer wall of the base plate 1. A first bidirectional threaded rod 203 driven by a drive motor 201 is rotatably connected in the horizontal groove. The two T-shaped blocks 202 are respectively sleeved on the outer walls of the two ends of the first bidirectional threaded rod 203.

[0026] It should be noted that when the moving mechanism 2 is needed, the first bidirectional threaded rod 203 is rotated by starting the drive motor 201, which in turn adjusts the distance between the two T-blocks 202, thereby adjusting the distance between the two clamping mechanisms 6, making it convenient to clamp workpieces of different sizes and easy to use.

[0027] like Figure 3 As shown, the lifting mechanism 3 includes an electric push rod 302 installed on the top outer wall of the T-shaped block 202, and first telescopic rods 301 installed on both sides of the T-shaped block 202. One end of the piston rod of the electric push rod 302 and the first telescopic rod 301 is fixedly connected to a fixing block 303, and a fixing circular plate 403 is installed on the fixing block 303.

[0028] It should be noted that when the lifting mechanism 3 is needed, the height of the fixed block 303 can be raised or lowered by activating the electric push rod 302, thereby adjusting the height of the clamping mechanism 6, which facilitates the flipping operation of the workpiece. The first telescopic rod 301 makes the lifting of the fixed block 303 more stable.

[0029] like Figure 4 As shown, the clamping mechanism 6 includes two clamping plates 604, and rubber plates 605 are fixedly connected to the clamping surfaces of the clamping plates 604. A vertical groove 602 is opened on the outer wall of the groove block 404. A second bidirectional threaded rod 603 driven by the second rotating block 601 is rotatably connected in the vertical groove 602. The two clamping plates 604 are respectively sleeved on the top and bottom of the outer wall of the second bidirectional threaded rod 603.

[0030] It should be noted that by setting the slot 9 on the placement plate 8, the clamping range of the clamping mechanism 6 for the workpiece can be increased. When the workpiece needs to be clamped, the clamping mechanism 6 is moved by the moving mechanism 2 until the slot 404 is in contact with the workpiece, and the position of the workpiece is further adjusted. By rotating the second rotating block 601, the second bidirectional threaded rod 603 is rotated until both rubber plates 605 are in contact with the workpiece, and the position of the workpiece can be fixed. The rubber plates 605 can increase the friction while buffering when clamping the workpiece, which is beneficial to protecting the workpiece.

[0031] like Figure 3 and Figure 4As shown, the locking mechanism 5 includes two locking hole plates 501 respectively installed on the top and bottom of the slot block 404. The fixed circular plate 403 corresponding to the slot block 404 has two circular holes 502 that are adapted to the holes in the locking hole plates 501. Each circular hole 502 is provided with a limit pin 503, and the limit pin 503 is inserted into the circular hole 502 through the locking hole plate 501.

[0032] It should be noted that when the locking mechanism 5 is needed to release the lock on the slot block 404, the limit pin 503 in the locking hole plate 501 can be pulled out. Conversely, the slot block 404 can be locked to prevent the slot block 404 from rotating.

[0033] like Figure 2 As shown, the calibration mechanism 7 includes two calibration blocks 703. The top outer wall of the placement plate 8 has a groove, in which a third bidirectional threaded rod 702 driven by the first rotating block 701 is installed. The two calibration blocks 703 are respectively sleeved on the two outer walls of the third bidirectional threaded rod 702.

[0034] It should be noted that when the position of the workpiece needs to be corrected, the first rotating block 701 is rotated to drive the third bidirectional threaded rod 702 to rotate until both correction blocks 703 are in contact with the workpiece, so that the workpiece can be initially corrected.

[0035] like Figure 1 As shown, an mounting plate 12 is installed in the middle of the top outer wall of the base plate 1. Two second telescopic rods 10 are installed at both ends of the top outer wall of the base plate 1. A hydraulic cylinder 11 is installed on the top outer wall of the mounting plate 12. One end of the piston rod of the hydraulic cylinder 11 and the second telescopic rod 10 is fixedly connected to the bottom outer wall of the placement plate 8.

[0036] It should be noted that the height of the placement plate 8 can be adjusted by the hydraulic cylinder 11, which makes it easier to flip the workpiece. The hydraulic cylinder 11 also makes the lifting and lowering of the placement plate 8 more stable.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A CNC positioning auxiliary fixture, comprising a base plate (1), characterized in that: A moving mechanism (2) is installed on the base plate (1). A lifting mechanism (3) for adjusting the height of the workpiece is installed on both ends of the top outer wall of the moving mechanism (2). A rotating mechanism (4) for flipping the workpiece is installed on the lifting mechanism (3). A placement plate (8) is provided on the top of the base plate (1). A slot (9) is opened on both ends of the outer wall of the placement plate (8). A correction mechanism (7) is installed on the placement plate (8). The rotating mechanism (4) includes a fixed circular plate (403). A rotating circular block (402) and a slot block (404) are rotatably connected to the outer walls of both ends of the fixed circular plate (403). A grip (401) is installed on the rotating circular block (402). A clamping mechanism (6) for fixing and limiting the workpiece is installed on the slot block (404). A locking mechanism (5) for fixing the position of the clamping mechanism (6) is installed on the slot block (404) and the fixed circular plate (403).

2. The CNC positioning auxiliary fixture according to claim 1, characterized in that: The moving mechanism (2) includes two T-shaped blocks (202). The top outer wall of the base plate (1) has a horizontal groove, and a first bidirectional threaded rod (203) driven by a drive motor (201) is rotatably connected in the horizontal groove. The two T-shaped blocks (202) are respectively sleeved on the outer walls of the two ends of the first bidirectional threaded rod (203).

3. The CNC positioning auxiliary fixture according to claim 1, characterized in that: The lifting mechanism (3) includes an electric push rod (302) installed on the top outer wall of the T-shaped block (202), and first telescopic rods (301) installed on both sides of the T-shaped block (202). A fixed block (303) is fixedly connected to one end of the piston rod of the electric push rod (302) and the first telescopic rod (301), and a fixed circular plate (403) is installed on the fixed block (303).

4. A CNC positioning auxiliary fixture according to claim 1, characterized in that: The clamping mechanism (6) includes two clamping plates (604), and rubber plates (605) are fixedly connected to the clamping surfaces of the clamping plates (604). A vertical groove (602) is opened on the outer wall of the groove block (404). A second bidirectional threaded rod (603) driven by a second rotating block (601) is rotatably connected in the vertical groove (602). The two clamping plates (604) are respectively sleeved on the top and bottom of the outer wall of the second bidirectional threaded rod (603).

5. A CNC positioning auxiliary fixture according to claim 1, characterized in that: The locking mechanism (5) includes two locking hole plates (501) respectively installed on the top and bottom of the slot block (404). The fixed circular plate (403) corresponding to the slot block (404) has two circular holes (502) that are adapted to the holes in the locking hole plates (501). Each circular hole (502) is provided with a limit pin (503), and the limit pin (503) is inserted into the circular hole (502) through the locking hole plate (501).

6. A CNC positioning auxiliary fixture according to claim 1, characterized in that: The correction mechanism (7) includes two correction blocks (703). The top outer wall of the placement plate (8) has a sliding groove, in which a third bidirectional threaded rod (702) driven by a first rotating block (701) is installed. The two correction blocks (703) are respectively sleeved on the outer walls of the two sides of the third bidirectional threaded rod (702).

7. A CNC positioning auxiliary fixture according to claim 1, characterized in that: An mounting plate (12) is installed in the middle of the top outer wall of the base plate (1). Two second telescopic rods (10) are installed at both ends of the top outer wall of the base plate (1). A hydraulic cylinder (11) is installed on the top outer wall of the mounting plate (12). One end of the piston rod of the hydraulic cylinder (11) and the second telescopic rod (10) is fixedly connected to the bottom outer wall of the placement plate (8).

Images