Zero-point positioning clamp for numerical control lathe

Abstract

The utility model relates to the technical field of numerical control lathes, and discloses a zero-point positioning clamp for a numerical control lathe, which comprises a base and further comprises a supporting seat, the supporting seat is mounted at the top of the base, three groups of zero-point positioner bodies are mounted at the top of the supporting seat, and the zero-point positioner bodies are arranged around the top of the supporting seat; according to the zero-point positioner, gas is input into the gas inlet pipe through the gas conveying pipe, so that the zero-point positioner body clamps a workpiece or a tool, the sealing performance of the rotary joint is improved through the sealing ring, and the zero-point positioner can be used for positioning the workpiece or the tool. The zero-point positioner body can be in a gas control state all the time when rotating through the rotating connector, the operation efficiency of the zero-point positioner body is improved, the downtime caused by the gas supply problem is shortened, and a workpiece can be fixed in the mode that the zero point of the workpiece can be directly locked through the zero-point positioner body and the positioning rod.

Description

Technical Field

[0001] This utility model relates to the field of CNC lathe technology, specifically to a zero-point positioning fixture for CNC lathes. Background Technology

[0002] A zero-point positioning fixture is a precision positioning and locking device, particularly suitable for CNC lathes. It employs zero-point positioning technology to maintain the zero-point position throughout the movement of the workpiece from one station to another, from one process to another, or from one machine tool to another. This fixture is designed to save auxiliary time spent re-aligning the zero point, making it ideal for machining large batches of precision parts.

[0003] Existing zero-point positioning fixtures typically use a zero-point positioner to clamp the workpiece during use. However, in CNC machining, the zero-point positioner needs to perform frequent rotation and positioning operations, which can lead to unstable or interrupted gas supply. This can cause the zero-point positioner to malfunction, thus affecting production efficiency and processing progress. Furthermore, the clamping range of the tooling after positioning by the zero-point positioner is relatively limited, making it inconvenient to position and clamp workpieces of different sizes, which affects the overall efficiency of the CNC production line.

[0004] Therefore, it is necessary to provide a new zero-point positioning fixture for CNC lathes to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a zero-point positioning fixture for CNC lathes to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a zero-point positioning fixture for a CNC lathe, comprising a base, and further comprising:

[0007] A support base is installed on the top of the base, and three sets of zero-point locator bodies are installed on the top of the support base, with the zero-point locator bodies arranged around the top of the support base.

[0008] An air intake pipe is located at the bottom of the zero-point positioner body, and a rotary joint is provided on the outside of the air intake pipe.

[0009] A mounting slot is provided in the inner cavity of the zero-point positioner body, and a positioning rod for mounting workpieces and tooling is installed on the inner wall of the mounting slot.

[0010] A support plate is installed on the top of a positioning rod, and a drive rod is rotatably connected to the top of the positioning rod. A support plate is fixed to the top of the drive rod.

[0011] Multiple guide grooves are evenly distributed on the top of the support plate. Guide rods are slidably connected to the inner walls of the guide grooves, and clamping blocks for clamping the workpiece are installed on the top of the guide rods.

[0012] Preferably, an air supply pipe is installed on the inner wall of the rotary joint, and sealing rings are provided at both ends of the rotary joint. One end of the air supply pipe is connected to one end of the air inlet pipe.

[0013] Preferably, a vertically arranged drive motor is installed on the top of the support plate, and a first gear is fixed to the output end of the drive motor. A second gear that drives the drive rod to rotate is meshed with the outer side of the first gear.

[0014] Preferably, a fixing frame is fixed to the top of the support plate, a fixing plate is fixed to the top of the fixing frame, and a support sleeve is fixed to the top of the fixing plate.

[0015] Preferably, multiple sets of limiting rods are fixed to the outer side of the support sleeve, and a sliding sleeve for limiting the guide rod is slidably connected to the outer side of the limiting rod, and the sliding sleeve corresponds one-to-one with the guide rod.

[0016] Preferably, one end of the limiting rod is fixed with a limiting block for limiting the sliding sleeve, and a protective pad is provided on the top of the support plate.

[0017] Preferably, a mounting bracket is fixed to the top of the guide rod, and a mounting block is installed inside the mounting bracket, with each mounting block corresponding to a clamping block.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This invention introduces gas into the inlet pipe through the gas supply pipe, enabling the zero-point positioner body to clamp the workpiece or tooling. The sealing ring improves the sealing performance of the rotary joint. The rotary joint ensures that the zero-point positioner body remains in a gas-controlled state while rotating, improving the operating efficiency of the zero-point positioner body and reducing downtime caused by gas supply issues. The zero-point positioner body and positioning rod can directly lock the workpiece at the zero point to fix it, facilitating subsequent clamping and positioning of the tooling, and enabling rapid workpiece changeover and multi-process machining. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a preferred embodiment of the zero-point positioning fixture for CNC lathes provided by this utility model;

[0021] Figure 2 This is a schematic diagram of the support plate in this utility model;

[0022] Figure 3This is a schematic diagram of the support plate in this utility model;

[0023] Figure 4 This is a schematic diagram of the rotary joint in this utility model.

[0024] In the diagram: 1. Base; 2. Support base; 3. Zero-point positioner body; 4. Air inlet pipe; 5. Rotary joint; 6. Mounting slot; 7. Positioning rod; 8. Support plate; 9. Drive rod; 10. Support plate; 11. Guide groove; 12. Guide rod; 13. Clamping block; 14. Air supply pipe; 15. Sealing ring; 16. Drive motor; 17. First gear; 18. Second gear; 19. Fixing frame; 20. Fixing plate; 21. Support sleeve; 22. Limiting rod; 23. Sliding sleeve; 24. Limiting block; 25. Mounting frame; 26. Mounting block; 27. Protective pad. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-4 As shown, a zero-point positioning fixture for a CNC lathe includes a base 1 and a support base 2. The support base 2 is mounted on the top of the base 1. Three sets of zero-point positioner bodies 3 are mounted on the top of the support base 2. The zero-point positioner bodies 3 are existing technology, which utilizes the clamping and releasing principle of ball bearings to achieve rapid connection and disconnection between the positioning joint and the zero-point positioner. During the machining process, the positioning joint is fastened to the tooling fixture or workpiece, and then the zero-point positioner achieves rapid positioning with the machine tool table. The structure and working principle are the same as a zero-point positioner in patent application number CN202322200276.1. When working, the air source is disconnected and the positioning pin is automatically locked, with no energy consumption. When changing the workpiece, sufficient gas is introduced to achieve workpiece replacement. Since this is existing technology, it will not be described in detail here. The zero-point positioner bodies 3 are arranged around the top of the support base 2.

[0027] The air inlet pipe 4 is located at the bottom of the zero-point positioner body 3. The top of the air inlet pipe 4 is connected to the air inlet at the bottom of the zero-point positioner body 3. A rotary joint 5 is connected to the outside of the air inlet pipe 4. The rotary joint 5 is existing technology and can input fluid medium from a static pipeline system into a rotating or reciprocating device. Through the rotary joint 5, the zero-point positioner body 3 can always be in a gas control state when it rotates, thereby improving the operating efficiency of the zero-point positioner body 3 and reducing downtime caused by gas supply problems.

[0028] The mounting slot 6 is located in the inner cavity of the zero-point positioner body 3. The inner wall of the mounting slot 6 is equipped with a positioning rod 7 for mounting the workpiece and tooling. The workpiece can be fixed by directly locking the zero point of the workpiece through the zero-point positioner body 3 and the positioning rod 7. This also facilitates the subsequent clamping and positioning of the tooling, making it easier to quickly change the workpiece and perform multi-process processing.

[0029] The support plate 8 is installed on the top of the positioning rod 7. The top of the positioning rod 7 is rotatably connected to the drive rod 9. The top of the drive rod 9 is fixed with the support plate 10. Multiple sets of guide grooves 11 are evenly opened on the top of the support plate 10. The inner wall of the guide groove 11 is slidably connected to the guide rod 12. The top of the guide rod 12 is equipped with a clamping block 13 for clamping the workpiece. The clamping block 13 achieves the effect of clamping the workpiece.

[0030] The inner wall of the rotary joint 5 is equipped with an air supply pipe 14, through which gas is input into the air inlet pipe 4, so that the zero-point positioner body 3 clamps the workpiece or tooling. Both ends of the rotary joint 5 are provided with sealing rings 15, which improve the sealing performance of the rotary joint 5. One end of the air supply pipe 14 is connected to one end of the air inlet pipe 4.

[0031] A vertically positioned drive motor 16 is mounted on the top of the support plate 8. A first gear 17 is fixed to the output end of the drive motor 16. A second gear 18, which drives the drive rod 9 to rotate, is meshed with the outer side of the first gear 17. The second gear 18 is fixed to the outer side of the drive rod 9. The drive motor 16 drives the first gear 17 and the second gear 18 to rotate, causing the drive rod 9 to move the support plate 10. The rotation of the support plate 10 pulls the guide rod 12 to slide inside the guide groove 11, so that the clamping block 13 clamps the workpiece. A fixing frame 19 is fixed to the top of the support plate 8. A fixing plate 20 is fixed to the top of the fixing frame 19. A support sleeve 21 is fixed to the top of the fixing plate 20. The inner wall of the support sleeve 21 is rotatably connected to the outer side of the drive rod 9. Multiple sets of limiting rods 22 are fixed to the outside of the support sleeve 21. A sliding sleeve 23 that limits the guide rod 12 is slidably connected to the outside of the limiting rod 22. The sliding sleeve 23 corresponds to the guide rod 12 one by one. A limiting block 24 that limits the sliding sleeve 23 is fixed to one end of the limiting rod 22. The movement of the guide rod 12 causes the sliding sleeve 23 to slide outside the limiting rod 22, so that the sliding sleeve 23 drives the guide rod 12 to move horizontally. A protective pad 27 is provided on the top of the support plate 10. A mounting frame 25 is fixed on the top of the guide rod 12. A mounting block 26 is installed inside the mounting frame 25. The mounting block 26 and the clamping block 13 are installed inside the mounting frame 25 by bolts, which facilitates the subsequent replacement of clamping blocks 13 of different sizes. The mounting block 26 corresponds to the clamping block 13 one by one.

[0032] Working Principle: In use, this device directly locks the workpiece at its zero point using the zero-point positioner body 3 and positioning rod 7, facilitating subsequent clamping and positioning of the tooling. This enables rapid workpiece changeover and multi-process machining. Gas is supplied to the inlet pipe 4 through the gas supply pipe 14, allowing the zero-point positioner body 3 to clamp the workpiece or tooling. The sealing ring 15 improves the sealing performance of the rotary joint 5. The rotary joint 5 ensures that the zero-point positioner body 3 remains under gas control during rotation, improving its operational efficiency and reducing... During downtime caused by gas supply issues, the drive motor 16 drives the first gear 17 and the second gear 18 to rotate, causing the drive rod 9 to move the support plate 10. The rotation of the support plate 10 pulls the guide rod 12 to slide inside the guide groove 11, so that the clamping block 13 clamps the workpiece. The movement of the guide rod 12 causes the sliding sleeve 23 to slide outside the limit rod 22, so that the sliding sleeve 23 drives the guide rod 12 to move horizontally. The mounting block 26 and the clamping block 13 are installed inside the mounting frame 25 by bolts, which facilitates the subsequent replacement of clamping blocks 13 of different sizes.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] 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 claims and their equivalents.

Claims

1. A zero positioning fixture for a numerical control lathe comprising a base (1), characterized in that, Also includes: Support seat (2), the support seat (2) is installed on the top of base (1), the top of the support seat (2) is installed with three groups of zero point locator body (3), the zero point locator body (3) is arranged around the top of the support seat (2); Air inlet pipe (4), the air inlet pipe (4) is arranged at the bottom of the zero point locator body (3), the outer side of the air inlet pipe (4) is provided with a rotary joint (5); Mounting groove (6) is arranged in the inner cavity of the zero point locator body (3), the inner wall of the mounting groove (6) is provided with a positioning rod (7) for mounting workpieces and tooling; Support plate (8) is installed on the top of the positioning rod (7), the top of the positioning rod (7) is rotatably connected with a driving rod (9), and the top of the driving rod (9) is fixed with a support disc (10); A plurality of guide grooves (11) are uniformly formed in the top of the support disc (10), the inner wall of the guide groove (11) is slidably connected with a guide rod (12), and the top of the guide rod (12) is provided with a clamping block (13) for clamping workpieces.

2. A zero positioning fixture for a CNC lathe as claimed in claim 1, wherein: The inner wall of the rotary joint (5) is provided with a gas delivery pipe (14), and the two ends of the rotary joint (5) are provided with sealing rings (15), one end of the gas delivery pipe (14) is communicated with one end of the air inlet pipe (4).

3. A zero positioning fixture for a CNC lathe as claimed in claim 1, wherein: The top of the support plate (8) is provided with a vertically arranged driving motor (16), the output end of the driving motor (16) is fixed with a first gear (17), the outer side of the first gear (17) is engaged with a second gear (18) for driving the driving rod (9) to rotate.

4. A zero positioning fixture for a CNC lathe as claimed in claim 1, wherein: The top of the support plate (8) is fixed with a fixed frame (19), the top of the fixed frame (19) is fixed with a fixed disc (20), and the top of the fixed disc (20) is fixed with a support sleeve (21).

5. A zero positioning fixture for a CNC lathe as claimed in claim 4, wherein: The outer side of the support sleeve (21) is fixed with a plurality of limiting rods (22), the outer side of the limiting rod (22) is slidably connected with a sliding sleeve (23) for limiting the guide rod (12), and the sliding sleeve (23) corresponds to the guide rod (12) one by one.

6. A zero positioning fixture for a CNC lathe as claimed in claim 5 wherein: One end of the limiting rod (22) is fixed with a limiting block (24) for limiting the sliding sleeve (23), and the top of the support disc (10) is provided with a protective pad (27).

7. A zero positioning fixture for a CNC lathe as claimed in claim 1, wherein: The top of the guide rod (12) is fixed with a mounting frame (25), the inside of the mounting frame (25) is provided with a mounting block (26), and the mounting block (26) corresponds to the clamping block (13) one by one.

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