Pneumatic ball lock zero-point clamp

Abstract

The utility model discloses a pneumatic ball lock zero-point clamp, which relates to the technical field of precision machining and comprises a workbench, a zero-point clamp body rotatably arranged on the workbench and a plurality of positioning balls slidably arranged in the zero-point clamp body. According to the zero-point clamp, workpiece chippings attached to the positioning balls are conveniently cleaned through the arranged cleaning assembly, the driving motor is started to drive the rotating shaft to rotate, the rotating shaft drives the driving gear to rotate in the rotating process, and the workpiece chippings are cleaned through the transmission gear. According to the zero-point clamp, chippings attached to the positioning balls are thrown away through centrifugal force generated by rotation, and therefore the purpose of cleaning the chippings on the positioning balls is achieved; and the situation that the device easily breaks down due to excessive chippings is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of precision mechanical processing, and specifically relates to a pneumatic ball lock zero point fixture. Background Art

[0002] The zero point positioning system is a unique positioning and locking device that can keep the zero point of the workpiece unchanged from one station to another, from one process to another, or from one machine tool to another, so that the auxiliary time for re-aligning the zero point can be saved, the continuity of work can be ensured, and the work efficiency can be improved. The existing Chinese patent (application number: CN202321437829.9) provides a pneumatic ball lock zero point clamp, including a base, the top of the base is equidistantly provided with three top covers near the front and back sides, the top of the top cover is provided with a sleeve at the center, the inner center of the sleeve is provided with a piston, the inner part of the sleeve and the outer periphery of the piston are provided with a plurality of steel balls, the bottom of the piston is provided with a bottom cover, and a plurality of springs are provided between the top cover and the bottom cover and the outer periphery of the piston, and a sensor is provided at the top of the base and near the left side between the top covers, the front of the base is provided with four air pipe holes, and the top center of the base is provided with four middle holes from left to right.

[0003] During use of the above-mentioned zero-point clamp, gas is introduced into the clamp to cause the ball to extend from the middle hole to position the workpiece. During the processing of the workpiece, chips generated by the processing may fall and stick to the ball. After the workpiece is processed and the ball retracts into the middle hole, the chips are likely to fall into the clamp. As the use time increases, the chips accumulated in the clamp continue to increase, which may affect the extension of the ball and cause the clamp to malfunction.

[0004] In view of this, this application is hereby filed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a pneumatic ball lock zero point clamp to achieve the purpose of cleaning processing debris.

[0006] In order to solve the above technical problems, the utility model provides a pneumatic ball lock zero-point clamp, comprising: a workbench, a zero-point clamp body rotatably arranged on the workbench, and a plurality of positioning balls slidably arranged in the zero-point clamp body. A cleaning component is arranged in the workbench, and the cleaning component includes a transmission gear connected to the zero-point clamp body, one side of the transmission gear is meshedly connected with a driving gear, and a rotating shaft is connected to the driving gear. A driving motor for driving the rotating shaft to rotate is arranged at the bottom of the workbench.

[0007] Furthermore, a mounting frame is connected to the bottom of the workbench, the driving motor is connected to the bottom of the mounting frame, and the cleaning component is arranged in the mounting frame.

[0008] Furthermore, an air inlet pipe is connected to the bottom of the zero-point fixture body, and one end of the air inlet pipe extends to the outside of the mounting frame and is rotatably connected to a rotary joint.

[0009] Furthermore, a protective component is provided in the workbench, and the protective component includes a protective cover slidably arranged in the workbench. A transmission screw is rotatably connected in the workbench, a nut is threadedly connected to the transmission screw, the top of the nut is connected to the bottom of the protective cover, and the bottom of the mounting frame is connected to a servo motor that drives the transmission screw to rotate.

[0010] Furthermore, the number of the transmission screw and the nut are both two, the transmission screw is connected to a synchronous wheel, and a synchronous belt is connected between the two synchronous wheels.

[0011] Furthermore, a guide groove is provided in the workbench, the guide groove is matched with the nut, and one end of the nut is slidably connected in the guide groove.

[0012] Furthermore, the protective cover is a hollow cylinder with openings at both ends, and a mounting opening for the protective cover to slide is provided on the top of the workbench.

[0013] Furthermore, a battery is connected inside the protective cover, and the other side of the battery is electrically connected to an electromagnet.

[0014] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.

[0015] 1. In the utility model, the cleaning component is provided to facilitate cleaning of the workpiece debris attached to the positioning ball. The driving motor is started to drive the rotating shaft to rotate. During the rotation of the rotating shaft, the driving gear is driven to rotate. Then, the rotating shaft meshingly connected on one side of the driving gear can drive the transmission gear, the zero point fixture body and the positioning ball to rotate. The setting utilizes the centrifugal force generated by the rotation to throw away the debris attached to the positioning ball, thereby achieving the purpose of cleaning the debris on the positioning ball and avoiding the situation where the device is prone to malfunction due to excessive debris.

[0016] 2. In the utility model, the protective component is set up to block the debris thrown off by the positioning ball, so as to prevent the thrown debris from causing harm to the staff. The servo motor is driven to drive the transmission screw to rotate, and then the nut threaded on the transmission screw can drive the protective cover to gradually extend out from the workbench. When the positioning ball rotates and throws off the debris, the debris can be blocked by the protective cover, thereby preventing the flying debris from injuring the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0020] Figure 3 It is a transverse cross-sectional view of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the cleaning component in the utility model;

[0022] Figure 5 It is a vertical cross-sectional view of the utility model;

[0023] Figure 6 It is a schematic diagram of the internal structure of the protective cover in the utility model.

[0024] Numbers in the figure:

[0025] 1. Workbench; 2. Zero point fixture body; 3. Positioning ball; 4. Cleaning assembly; 401. Transmission gear; 402. Driving gear; 403. Rotating shaft; 404. Driving motor; 5. Rotary joint; 6. Mounting frame; 7. Protection assembly; 701. Protection cover; 702. Transmission screw; 703. Nut; 704. Servo motor; 8. Synchronous wheel; 9. Synchronous belt; 10. Guide groove; 11. Battery; 12. Electromagnet.

[0026] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Embodiment 1

[0031] A pneumatic ball lock zero point fixture, reference Figure 1-Figure 4 , including: a workbench 1, a zero-point fixture body 2 rotatably arranged on the workbench 1, a plurality of positioning balls 3 slidably arranged in a circular array at equal intervals in the zero-point fixture body 2, and an inspection plate detachably connected to one side of the workbench 1 by screws, the inspection plate is convenient for repairing the parts in the workbench 1, the bottom of the workbench 1 is connected to a support leg, the bottom of the zero-point fixture body 2 is connected to an air intake pipe, one end of the air intake pipe extends to the outside of the mounting frame 6 and is rotatably connected to a rotary joint 5, the air intake pipe can pass the outside air into the zero-point fixture body 2, the rotary joint 5 is a pipeline connection device, and the connected pipelines can rotate relatively, which can be used to transmit various media such as gas, liquid, oil, etc. The rotary joint 5 is convenient for inputting gas into the zero-point fixture body 2 during the rotation of the zero-point fixture body 2;

[0032] A cleaning component 4 for cleaning debris attached to the positioning ball 3 is provided in the workbench 1, and the cleaning component 4 includes a transmission gear 401 connected to the zero-point fixture body 2, and a driving gear 402 is meshed and connected to one side of the transmission gear 401, and a rotating shaft 403 is connected to the driving gear 402. A driving motor 404 for driving the rotating shaft 403 to rotate is provided at the bottom of the workbench 1, and a mounting frame 6 is connected to the bottom of the workbench 1. The driving motor 404 is connected to the bottom of the mounting frame 6, and the cleaning component 4 is arranged in the mounting frame 6. The mounting frame 6 is arranged to facilitate the connection of the cleaning component 4 to the components.

[0033] It should be noted that the zero-point fixture body 2 is provided with an air pipe hole, a piston and a spring. The air pipe hole is connected to an external air source, and the air pressure can effectively move the piston up and down in the cavity. The spring drives the piston to move up and down in the cavity, pushing the positioning ball 3 to lock and release, and processing the workpiece. This is the prior art that people in this field should know, so it will not be explained in detail here. For details, please refer to the prior art (patent publication number: CN220312592U).

[0034] The cleaning component 4 is provided to facilitate cleaning of workpiece debris attached to the positioning ball 3. The driving motor 404 is started to drive the rotating shaft 403 to rotate. During the rotation of the rotating shaft 403, the driving gear 402 is driven to rotate. Then, the rotating shaft 403 meshingly connected to one side of the driving gear 402 can drive the transmission gear 401, the zero point fixture body 2 and the positioning ball 3 to rotate. At this time, the centrifugal force generated by the rotation can throw off the debris attached to the positioning ball 3, thereby achieving the purpose of cleaning the debris on the positioning ball 3.

[0035] Embodiment 2

[0036] On the basis of Example 1, a protective component 7 for preventing debris from splashing is provided in the workbench 1, and the protective component 7 includes a protective cover 701 slidably arranged in the workbench 1, a transmission screw 702 is rotatably connected in the workbench 1, a nut 703 is threadedly connected to the transmission screw 702, the top of the nut 703 is connected to the bottom of the protective cover 701, and a servo motor 704 for driving the transmission screw 702 to rotate is connected to the bottom of the mounting frame 6, a battery 11 is connected in the protective cover 701, and the other side of the battery 11 is electrically connected to an electromagnet 12, and the battery 11 and the electromagnet 12 are used in conjunction to adsorb the debris that is thrown off on the protective cover 701 to prevent the debris from hitting the protective cover 701 and causing further splashing.

[0037] The protective component 7 provided can block the debris thrown off by the positioning ball 3 to prevent the thrown debris from causing harm to the staff. The servo motor 704 is driven to drive the transmission screw 702 to rotate, and then the nut 703 threaded on the transmission screw 702 can drive the protective cover 701 to gradually extend out from the workbench 1. When the positioning ball 3 rotates and throws off the debris, the debris can be blocked by the protective cover 701.

[0038] Specifically, refer to Figure 2 and Figure 3There are two transmission screws 702 and two nuts 703. The transmission screw 702 is connected with a synchronous wheel 8. A synchronous belt 9 is connected between the two synchronous wheels 8. The two nuts 703 can improve the stability of the lifting and lowering of the protective cover 701, and the synchronous wheel 8 and the synchronous belt 9 can conveniently drive the two transmission screws 702 to rotate synchronously, thereby reducing the manufacturing cost of the device.

[0039] Specifically, refer to Figure 5 A guide groove 10 is provided in the workbench 1, and the guide groove 10 is adapted to the nut 703. One end of the nut 703 is slidably connected in the guide groove 10. The guide groove 10 can provide a limiting and guiding effect for the sliding of the nut 703, further improving the stability of the nut 703 during the sliding process. Figure 1 The protective cover 701 is a hollow cylinder with openings at both ends, and a mounting opening for the protective cover 701 to slide is provided on the top of the workbench 1.

[0040] It is configured as a hollow cylinder with openings at both ends and is used in conjunction with the mounting opening to facilitate the upward and downward movement of the protective cover 701.

[0041] Working principle: The cleaning component 4 is provided to facilitate cleaning of the workpiece debris attached to the positioning ball 3, and the driving motor 404 is started to drive the rotating shaft 403 to rotate. During the rotation of the rotating shaft 403, the driving gear 402 is driven to rotate. Then, the rotating shaft 403 meshingly connected to one side of the driving gear 402 can drive the transmission gear 401, the zero point fixture body 2 and the positioning ball 3 to rotate. At this time, the centrifugal force generated by the rotation can throw off the debris attached to the positioning ball 3, thereby achieving the purpose of cleaning the debris on the positioning ball 3;

[0042] The protective component 7 provided can block the debris thrown off by the positioning ball 3 to prevent the thrown debris from causing harm to the staff. The servo motor 704 is driven to drive the transmission screw 702 to rotate, and then the nut 703 threaded on the transmission screw 702 can drive the protective cover 701 to gradually extend out from the workbench 1. When the positioning ball 3 rotates and throws off the debris, the debris can be blocked by the protective cover 701, thereby preventing the flying debris from injuring the staff.

[0043] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A pneumatic ball lock zero point fixture, comprising: Workbench (1); Rotating a zero-point fixture body (2) disposed on a workbench (1); A plurality of positioning balls (3) slidably arranged in the zero point fixture body (2); The invention is characterized in that a cleaning assembly (4) is arranged in the workbench (1), and the cleaning assembly (4) includes a transmission gear (401) connected to the zero-point fixture body (2), one side of the transmission gear (401) is meshedly connected with a driving gear (402), and a rotating shaft (403) is connected to the driving gear (402), and a driving motor (404) for driving the rotating shaft (403) to rotate is arranged at the bottom of the workbench (1).

2. A pneumatic ball lock zero point fixture according to claim 1, characterized in that: The bottom of the workbench (1) is connected to a mounting frame (6), the drive motor (404) is connected to the bottom of the mounting frame (6), and the cleaning component (4) is arranged in the mounting frame (6).

3. The pneumatic ball lock zero point fixture according to claim 1, characterized in that: The bottom of the zero-point fixture body (2) is connected to an air intake pipe, one end of which extends to the outside of the mounting frame (6) and is rotatably connected to a rotary joint (5).

4. The pneumatic ball lock zero point fixture according to claim 2, characterized in that: The workbench (1) is provided with a protection component (7), the protection component (7) comprising a protection cover (701) slidably arranged in the workbench (1), a transmission screw (702) rotatably connected in the workbench (1), a nut (703) threadedly connected on the transmission screw (702), the top of the nut (703) being connected to the bottom of the protection cover (701), and the bottom of the mounting frame (6) being connected to a servo motor (704) for driving the transmission screw (702) to rotate.

5. The pneumatic ball lock zero point fixture according to claim 4, characterized in that: The number of the transmission screw (702) and the number of the nut (703) are both two, the transmission screw (702) is connected to a synchronous wheel (8), and a synchronous belt (9) is connected between the two synchronous wheels (8).

6. The pneumatic ball lock zero point fixture according to claim 4, characterized in that: A guide groove (10) is provided in the workbench (1), the guide groove (10) is matched with the nut (703), and one end of the nut (703) is slidably connected in the guide groove (10).

7. The pneumatic ball lock zero point fixture according to claim 4, characterized in that: The protective cover (701) is a hollow cylinder with openings at both ends, and a mounting opening for the protective cover (701) to slide is provided on the top of the workbench (1).

8. The pneumatic ball lock zero point fixture according to claim 4, characterized in that: A storage battery (11) is connected inside the protective cover (701), and the other side of the storage battery (11) is electrically connected to an electromagnet (12).

Images