Bar clamping mechanism of numerical control lathe

Abstract

The utility model discloses a bar clamping mechanism of a numerically controlled lathe, which belongs to the technical field of numerically controlled lathes and comprises a clamping seat, a first through hole is arranged at the center of the clamping seat, a first cavity is arranged on one side inside the clamping seat, and the first cavity is communicated with the first through hole. And a protection fixing assembly and an auxiliary dust removal assembly are arranged in the first cavity. According to the long bar clamping and fixing device, the driving motor drives the rotating shaft, the first lead screw and the second lead screw to rotate, so that the two threaded sleeves respectively drive the flat plate, the arc-shaped block, the spring and the flexible plate to move relatively, the long bar is clamped and fixed in an auxiliary mode through the flexible plate, and the clamping and fixing effect on the long bar is further improved; and meanwhile, the arc-shaped blocks can shield the first through holes, so that sweeps are prevented from entering the numerical control lathe in the long bar machining process, and therefore the use protection performance of the device is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of numerically controlled lathes, and in particular relates to a bar material clamping mechanism for numerically controlled lathes. Background Art

[0002] Bar stock is a workpiece frequently used in the field of mechanical production and processing. In the process of bar stock production, CNC lathes are often required to process it. In order to ensure the processing stability and accuracy of the CNC lathe on the bar stock workpiece, a clamping mechanism is required to fix the bar stock workpiece.

[0003] For example, a CNC lathe disclosed in Chinese patent document (CN115156967A) comprises a CNC lathe body, a centrifugal block, a clamping device, a fixing device and a dynamic limiting mechanism. A rotating block is rotatably connected to the CNC lathe body, and a plug-in slot is provided in the rotating block. This CNC lathe is convenient for simultaneously fixing two sides of a workpiece through the clamping device and the fixing device by arranging the clamping device, the fixing device and the dynamic limiting mechanism, thereby improving the strength and stability of the fixation. At the same time, when the workpiece rotates, the dynamic limiting mechanism will link the clamping device to continuously clamp the workpiece to prevent the workpiece from being deflected and affecting the processing accuracy. The device is simple and quick to operate, and dynamic fixing can be achieved without manual operation during the rotation processing of the workpiece, which greatly improves the stability of the workpiece during processing and is convenient for disassembly and assembly and use. However, during use, the device is inconvenient to protect the chuck, and waste chips during the workpiece processing will enter the chuck and the inside of the claw, resulting in an impact on the movement of the claw and the performance of the device. Therefore, certain improvements are needed. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that in the prior art, it is inconvenient to protect the chuck during use, and waste chips in the workpiece processing process will enter the chuck and the inside of the claw, resulting in affecting the movement of the claw and the performance of the device, and to propose a CNC lathe bar clamping mechanism.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A bar clamping mechanism for a CNC lathe comprises a holder, a first through hole is formed at the center of the holder, a first cavity is formed at one side of the holder, the first cavity is connected to the first through hole, and a protective fixing component and an auxiliary dust removal component are respectively disposed inside the first cavity;

[0007] The protective and fixing component includes a rotating shaft, a first lead screw, and a second lead screw. Threaded sleeves are threadedly connected to both the first lead screw and the second lead screw. A flat plate is fixedly connected to the outer peripheral side of the threaded sleeve. Arc-shaped blocks are fixedly connected to one side of the two flat plates facing each other. A plurality of springs are fixedly connected to the inner peripheral side of the arc-shaped block. The other side of the spring is fixedly connected to a flexible plate. By rotating the first lead screw and the second lead screw, the threaded sleeve, the arc-shaped block, and the flexible plate are driven to move, so as to protect and fix the bar workpiece.

[0008] As a further description of the above technical solution:

[0009] The bottom end of the rotating shaft is fixedly connected to the top end of the first lead screw. The bottom end of the first lead screw is fixedly connected to the top end of the second lead screw. The thread directions on the first lead screw and the second lead screw are arranged in opposite directions. The rotating shaft and the second lead screw are both rotatably connected to the inside of the card seat through bearings.

[0010] As a further description of the above technical solution:

[0011] The top end of the rotating shaft extends to the outside of the card seat and is fixedly connected to a driving motor. The bottom of the driving motor is fixedly connected to the outer wall of the card seat.

[0012] As a further description of the above technical solution:

[0013] A limit slider is fixedly connected to the side of the flat plate away from the threaded sleeve. The other side of the limit slider is slidably connected to a limit chute. The limit chute is located inside the card seat. A driving component is arranged on one side inside the card seat. The driving component is arranged on the side away from the first cavity, and a claw is arranged on the other side of the driving component. The claw is slidably connected to the inside of the card seat.

[0014] As a further description of the above technical solution:

[0015] The auxiliary dust removal component includes an airbag. One side of the airbag is fixedly connected to the outer wall of the flat plate. The other side of the airbag is fixedly connected to a cross plate. One side of the cross plate is fixedly connected to the inner wall of the card seat. One side of the airbag is communicated with a one-way air inlet pipe. The other side of the airbag is communicated with a one-way air outlet pipe. The other end of the one-way air outlet pipe is provided with an annular frame.

[0016] As a further description of the above technical solution:

[0017] The annular frame is arranged inside the first through hole, and the outer peripheral side of the annular frame is fixedly connected to the inner wall of the card seat. A second cavity is opened inside the annular frame. One side of the second cavity is communicated with the one-way air outlet pipe. A plurality of air outlets are circumferentially distributed on the other side of the second cavity. The air outlets are communicated with the annular frame.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present utility model are:

[0019] 1. In the present utility model, through the provided protective fixing assembly, the driving motor drives the rotating shaft, the first lead screw, and the second lead screw to rotate, so that the two threaded sleeves drive the flat plate, the arc-shaped block, the spring, and the flexible plate to move relatively. The flexible plate is used to assist in clamping and fixing the long bar stock, further improving the clamping and fixing effect on the long bar stock, preventing the clamping jaws from being worn after long-term use and affecting the fixing stability of the long bar stock. At the same time, the arc-shaped block will block the first through hole to prevent the waste chips generated during the processing of the long bar stock from entering the interior of the CNC lathe, thereby effectively improving the use protection performance of the device.

[0020] 2. In the present utility model, through the provided auxiliary dust removal assembly, after the long bar stock is processed, first, the driving motor drives the flexible plate and the flat plate to move and squeeze the airbag. The gas inside the airbag is sprayed to the clamping jaws through the one-way air inlet pipe, the second cavity, and multiple air outlets to clean the impurities adhered to the surface of the clamping jaws, thereby preventing the waste chips from adhering to the surface of the clamping jaws and preventing the clamping jaws from rubbing and wearing against the clamping seat and the driving components inside during the movement, further improving the protection performance of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the overall three-dimensional structure schematic diagram of the present utility model;

[0022] Figure 2 is the three-dimensional structure schematic diagram of the protective fixing assembly and the auxiliary dust removal assembly in the present utility model;

[0023] Figure 3 is in the present utility model Figure 2 local enlarged structure schematic diagram at A.

[0024] LEGEND DESCRIPTION:

[0025] 1. Clamping seat; 2. Protective fixing assembly; 201. Rotating shaft; 202. First lead screw; 203. Driving motor; 204. Threaded sleeve; 205. Flat plate; 206. Arc-shaped block; 207. Spring; 208. Flexible plate; 209. Second lead screw; 210. Limit slider; 3. Auxiliary dust removal assembly; 301. Airbag; 302. Cross plate; 303. One-way air inlet pipe; 304. One-way air outlet pipe; 305. Ring frame; 306. Air outlet; 4. Clamping jaw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0027] Please refer to Figures 1-3 , the present invention provides a technical solution: a bar clamping mechanism for a numerically controlled lathe, including a clamping seat 1. A first through hole is provided at the center of the clamping seat 1. A first cavity is provided on one side inside the clamping seat 1. The first cavity is communicated with the first through hole, and a protective fixing component 2 and an auxiliary dust removal component 3 are respectively arranged inside the first cavity.

[0028] The protective fixing component 2 includes a rotating shaft 201, a first lead screw 202 and a second lead screw 209. Threaded sleeves 204 are threadedly connected to both the first lead screw 202 and the second lead screw 209. A flat plate 205 is fixedly connected to the outer peripheral side of the threaded sleeve 204. Arc-shaped blocks 206 are fixedly connected to the opposite sides of the two flat plates 205. A plurality of springs 207 are fixedly connected to the inner peripheral side of the arc-shaped block 206. The other side of the spring 207 is fixedly connected to a flexible plate 208. By rotating the first lead screw 202 and the second lead screw 209 to drive the threaded sleeve 204, the arc-shaped block 206 and the flexible plate 208 to move, so as to protect and fix the bar workpiece. The bottom end of the rotating shaft 201 is fixedly connected to the top end of the first lead screw 202. The bottom end of the first lead screw 202 is fixedly connected to the top end of the second lead screw 209. The thread directions on the first lead screw 202 and the second lead screw 209 are oppositely arranged. The rotating shaft 201 and the second lead screw 209 are both rotatably connected to the inside of the clamping seat 1 through bearings. The top end of the rotating shaft 201 extends to the outside of the clamping seat 1 and is fixedly connected to a driving motor 203. The bottom of the driving motor 203 is fixedly connected to the outer wall of the clamping seat 1. A limiting slider 210 is fixedly connected to the side of the flat plate 205 away from the threaded sleeve 204. The other side of the limiting slider 210 is slidably connected to a limiting chute. The limiting chute is located inside the clamping seat 1. A driving component is arranged on one side inside the clamping seat 1. The driving component is arranged on the side away from the first cavity, and a claw 4 is arranged on the other side of the driving component. The claw 4 is slidably connected to the inside of the clamping seat 1.

[0029] Specific implementation method: First, fix the card seat 1 at a suitable position on an external numerical control lathe, and then pass one end of the long bar stock through the first through hole from one side of the flexible plate 208. After the long bar stock is adjusted to a suitable position, an operator operates a tool to drive the drive assembly inside the card seat 1 to rotate. The drive assembly drives the claw 4 to move towards the long bar stock, and the long bar stock is clamped and fixed by the claw 4. At the same time, start the drive motor 203, and the drive motor 203 drives the rotating shaft 201, the first lead screw 202, and the second lead screw 209 to rotate. By utilizing the linkage effect between the first lead screw 202, the second lead screw 209, and the threaded sleeve 204, the power is transmitted to the threaded sleeve 204, so that the two threaded sleeves 204 drive the flat plate 205, the arc-shaped block 206, the spring 207, and the flexible plate 208 to move relatively. The long bar stock is assisted to be clamped and fixed by the flexible plate 208, further improving the clamping and fixing effect on the long bar stock, preventing the claw 4 from being worn after long-term use and affecting the fixing stability of the long bar stock. At the same time, the arc-shaped block 206 will block the first through hole to prevent waste chips during the processing of the long bar stock from entering the interior of the numerical control lathe, thereby effectively improving the use protection of the device.

[0030] The auxiliary dust removal assembly 3 includes an air bag 301. One side of the air bag 301 is fixedly connected to the outer wall of the flat plate 205, and the other side of the air bag 301 is fixedly connected to a cross plate 302. One side of the cross plate 302 is fixedly connected to the inner wall of the card seat 1. One side of the air bag 301 is communicated with a one-way air inlet pipe 303, and the other side of the air bag 301 is communicated with a one-way air outlet pipe 304. The other end of the one-way air outlet pipe 304 is provided with an annular frame 305. The annular frame 305 is arranged inside the first through hole, and the outer peripheral side of the annular frame 305 is fixedly connected to the inner wall of the card seat 1. A second cavity is opened inside the annular frame 305. One side of the second cavity is communicated with the one-way air outlet pipe 304, and the other side of the second cavity is circumferentially provided with a plurality of air outlet holes 306. The air outlet holes 306 are communicated with the annular frame 305.

[0031] Specific implementation method: When the long bar stock is processed, first make the drive motor 203 drive the flexible plate 208 and the flat plate 205 to reset. At this time, the flat plate 205 will move away from the long bar stock and squeeze the air bag 301, and the gas inside the air bag 301 is transported to the second cavity opened inside the annular frame 305 through the one-way air inlet pipe 303, and then sprayed to the claw 4 through a plurality of air outlet holes 306 to clean the impurities adhered to the surface of the claw 4, thereby preventing waste chips from adhering to the surface of the claw 4 and preventing friction and wear phenomena from occurring between the claw 4 and the card seat 1 and its internal drive assembly during the movement of the claw 4, further improving the protection of the device during use.

[0032] Working principle: When in use, first fix the card seat 1 at a suitable position on the external CNC lathe, and then pass one end of the long bar stock through the first through hole from one side of the flexible plate 208. After the long bar stock is adjusted to a suitable position, the operator operates the tool to drive the drive assembly inside the card seat 1 to rotate. The drive assembly drives the clamping jaws 4 to move towards the long bar stock, and the long bar stock is clamped and fixed by the clamping jaws 4. At the same time, start the drive motor 203, and the drive motor 203 drives the rotating shaft 201, the first lead screw 202, and the second lead screw 209 to rotate. Utilizing the linkage effect between the first lead screw 202, the second lead screw 209, and the threaded sleeve 204, the power is transmitted to the threaded sleeve 204, so that the two threaded sleeves 204 drive the flat plate 205, the arc-shaped block 206, the spring 207, and the flexible plate 208 to move relatively. The long bar stock is assisted and clamped and fixed by the flexible plate 208, and the arc-shaped block 206 blocks and protects the first through hole. When the long bar stock is processed, first make the drive motor 203 drive the flexible plate 208 and the flat plate 205 to reset. At this time, the flat plate 205 moves away from the long bar stock and squeezes the airbag 301. The gas inside the airbag 301 is transported through the one-way air inlet pipe 303 to the second cavity opened inside the annular frame 305, and then sprayed to the clamping jaws 4 through a plurality of air outlets 306 to clean the impurities adhered to the surface of the clamping jaws 4. It is convenient to use.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A bar clamping mechanism for a numerically controlled lathe, comprising a clamping seat (1), characterized in that: A first through hole is provided at the center of the card holder (1). A first cavity is provided on one side inside the card holder (1). The first cavity is communicated with the first through hole, and a protection and fixation component (2) and an auxiliary dust removal component (3) are respectively arranged inside the first cavity. The protection and fixation component (2) includes a rotating shaft (201), a first lead screw (202) and a second lead screw (209). Threaded sleeves (204) are threadedly connected to both the first lead screw (202) and the second lead screw (209). A flat plate (205) is fixedly connected to the outer peripheral side of the threaded sleeve (204). Arc-shaped blocks (206) are fixedly connected to the opposite sides of the two flat plates (205). A plurality of springs (207) are fixedly connected to the inner peripheral side of the arc-shaped block (206). The other side of the spring (207) is fixedly connected to a flexible plate (208). By rotating the first lead screw (202) and the second lead screw (209), the threaded sleeve (204), the arc-shaped block (206) and the flexible plate (208) are driven to move, so as to protect and fix the bar workpiece.

2. The bar clamping mechanism of a numerically controlled lathe according to claim 1, characterized in that: The bottom end of the rotating shaft (201) is fixedly connected to the top end of the first lead screw (202). The bottom end of the first lead screw (202) is fixedly connected to the top end of the second lead screw (209). The thread directions on the first lead screw (202) and the second lead screw (209) are arranged in opposite directions. The rotating shaft (201) and the second lead screw (209) are both rotatably connected inside the card holder (1) through bearings.

3. The bar clamping mechanism of a numerically controlled lathe according to claim 2, wherein: The top end of the rotating shaft (201) extends to the outside of the card holder (1) and is fixedly connected to a driving motor (203). The bottom of the driving motor (203) is fixedly connected to the outer wall of the card holder (1).

4. The bar clamping mechanism of a CNC lathe according to claim 3, characterized in that: A limiting slider (210) is fixedly connected to the side of the flat plate (205) away from the threaded sleeve (204). The other side of the limiting slider (210) is slidably connected to a limiting chute. The limiting chute is located inside the card holder (1). A driving component is arranged on one side inside the card holder (1). The driving component is arranged on the side away from the first cavity, and a claw (4) is arranged on the other side of the driving component. The claw (4) is slidably connected inside the card holder (1).

5. A bar clamping mechanism for a numerically controlled lathe according to claim 4, characterized in that: The auxiliary dust removal component (3) includes an air bag (301). One side of the air bag (301) is fixedly connected to the outer wall of the flat plate (205). The other side of the air bag (301) is fixedly connected to a cross plate (302). One side of the cross plate (302) is fixedly connected to the inner wall of the card holder (1). One side of the air bag (301) is communicated with a one-way air inlet pipe (303). The other side of the air bag (301) is communicated with a one-way air outlet pipe (304). The other end of the one-way air outlet pipe (304) is provided with an annular frame (305).

6. The bar clamping mechanism of a numerically controlled lathe according to claim 5, characterized in that: The annular frame (305) is arranged inside the first through hole, and the outer peripheral side of the annular frame (305) is fixedly connected to the inner wall of the card holder (1). A second cavity is provided inside the annular frame (305). One side of the second cavity is communicated with the one-way air outlet pipe (304). A plurality of air outlet holes (306) are circumferentially distributed on the other side of the second cavity. The air outlet holes (306) are communicated with the annular frame (305).

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