Part machining positioning clamp for numerical control machine tool

Abstract

The utility model provides a part machining positioning fixture for a numerical control machine tool, and relates to the technical field of part fixtures, the part machining positioning fixture comprises the numerical control machine tool, a fixture table arranged at the top of the numerical control machine tool, a fixture mounted at the top of the fixture table and a clamping assembly arranged at the top of the fixture, and the clamping assembly comprises a clamping cylinder, a telescopic rod a, a connector, a mounting seat and a clamping block. According to the part machining positioning clamp for the numerical control machine tool, the clamping assemblies are arranged to be of a triangular structure, three different clamping point positions are provided for a part, clamping force can be dispersed in a larger range, the part machining positioning clamp can adapt to parts of different shapes to be clamped and fixed, it is guaranteed that the part cannot move or incline in the drilling machining process, and the machining efficiency is improved. And the part drilling machining precision is prevented from being affected, and the part machining quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of parts clamping technology, specifically a parts machining positioning clamping fixture for CNC machine tools. Background Technology

[0002] CNC machine tools can perform various types of machining operations, and drilling is one of the common machining methods. Specifically, in drilling, CNC machine tools can drill holes of a specified diameter and depth on the workpiece with great precision. It is suitable for various materials, including metals, plastics, and wood. CNC machine tool machining not only improves production efficiency and product quality, but also reduces reliance on manual skills. It is particularly suitable for the mass production of complex-shaped parts. CNC machine tool fixtures are devices used to fix the workpiece and ensure that it maintains the correct position and stability during machining.

[0003] Regarding positioning fixtures for CNC machine tool machining, a search revealed a machine tool positioning fixture (publication number: CN215880777U). This fixture uses an abutment component to clamp the workpiece. Combined with the adjustment effect of the adjustment component and the rotation of the movable block and the fixed rod, it achieves tilt clamping. Furthermore, a dial allows for convenient and precise tilt adjustment. The rotation of the ring limiting component and the L-shaped sliding component, as well as the rotation of the toothed ring and the limiting ring, enables tilting at multiple positions. The locking component further ensures precise positioning, expanding its applicability and making it more suitable for machining workpieces requiring tilting. However, this fixture still has shortcomings in practical use. Its abutment component has a parallel symmetrical structure. When clamping parts of different shapes, the parallel symmetrical abutment plates may not evenly distribute the clamping force, making it difficult to achieve precise position fixation. Consequently, it cannot provide sufficient contact surface to stably clamp the workpiece, causing the workpiece to move or tilt during machining, affecting machining accuracy. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a positioning fixture for machining parts for CNC machine tools. The clamping components are arranged in a triangular structure, with three different clamping points for the parts. This allows the clamping force to be distributed over a wider range, enabling it to clamp and fix parts of different shapes. This ensures that the parts will not move or tilt during drilling, thus avoiding affecting the drilling accuracy and improving the quality of the parts.

[0005] The technical problem to be solved by this utility model is achieved by the following technical solution:

[0006] A part machining positioning fixture for a CNC machine tool includes: a CNC machine tool, a fixture table disposed on the top of the CNC machine tool, a fixture mounted on the top of the fixture table, and a clamping assembly disposed on the top of the fixture. The clamping assembly includes: a clamping cylinder, a telescopic rod a, a connector, a mounting base, and a clamping block.

[0007] Preferably, three clamping cylinders are fixedly installed on the top of the clamp by bolts. The three clamping cylinders are in a triangular structure. Each of the three clamping cylinders has a telescopic rod a installed at its output end. Each of the telescopic rods a has a connector installed at its inner end. Each of the three clamping cylinders has a mounting seat on its inner side. Each mounting seat has a clamping block fixedly installed on its top by bolts. The top of the clamping block is fixedly installed to the connector by bolts.

[0008] Preferably, the clamp has three movable grooves on its top, and each of the mounting bases has a limiting slider that is slidably connected to the movable grooves on its bottom.

[0009] Preferably, the fixture is equipped with a servo motor at the top, a mounting block is mounted on the outside of the servo motor, a mounting head is mounted on the output shaft at the bottom of the servo motor, and a drill rod is mounted on the bottom of the mounting head.

[0010] Preferably, a fixed block is installed on one side of the top of the CNC machine tool, a Y-axis stepper motor is installed on the outer end of the fixed block, a Y-axis lead screw is installed on the output end of the Y-axis stepper motor, the other end of the Y-axis lead screw is rotatably connected to one side of the top of the CNC machine tool through a bearing, a moving block is threaded onto the Y-axis lead screw, the moving block is connected to the fixture table, Y-axis slide rods are installed on both sides of the inner end of the fixed block, and Y-axis sliders that are slidably connected to the Y-axis slide rods are installed on both sides of the bottom of the fixture table.

[0011] Preferably, a movable frame is provided on the outside of the servo motor, a lifting cylinder is installed on the top of the movable frame, a telescopic rod b is installed at the bottom output end of the lifting cylinder, a movable block is installed at the bottom of the telescopic rod b, the mounting block is connected to the movable block, sliding sleeves are installed on both sides of the top of the movable block, and guide slide rods that are slidably connected to the sliding sleeves are installed on both sides inside the movable frame.

[0012] Preferably, the CNC machine tool has support frames installed on both sides of its top. One of the support frames has an X-axis stepper motor installed on one side of its outer end. The output end of the X-axis stepper motor is equipped with an X-axis lead screw. The other end of the X-axis lead screw is rotatably connected to the other support frame via a bearing. The outer side of the movable frame has a threaded hole for threaded connection with the X-axis lead screw. An X-axis slide bar is installed between the two support frames. An X-axis slider is installed on the outer side of the movable frame and is slidably connected to the X-axis slide bar.

[0013] The beneficial effects of this utility model are:

[0014] (1) The clamping component of this utility model is set in a triangular structure, with three different clamping points for the part. The clamping force can be distributed over a larger range, which can adapt to the clamping and fixing of parts of different shapes, ensuring that the parts will not move or tilt during the drilling process, avoiding affecting the drilling accuracy of the parts and improving the quality of the parts processing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic cross-sectional view of the present invention.

[0017] Figure 3 This is a schematic diagram of the fixture structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the connection structure of the servo motor, mounting head, and drill rod of this utility model.

[0019] Figure 5 This is a schematic diagram of the connection structure between the Y-axis stepper motor and the Y-axis lead screw of this utility model.

[0020] Figure 6 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0021] Figures 1-6 Components: 1. CNC machine tool; 101. Fixture table; 102. Fixture; 2. Clamping cylinder; 201. Telescopic rod a; 202. Connector; 203. Mounting base; 204. Clamping block; 205. Moving slide; 206. Limiting slider; 3. Servo motor; 301. Mounting block; 302. Mounting head; 303. Drill rod; 4. Fixing block; 401. Y-axis stepper motor; 402. Y-axis lead screw; 403. Moving block; 404. Y-axis slide bar; 405. Y-axis slider; 5. Moving frame; 501. Lifting cylinder; 502. Telescopic rod b; 503. Movable block; 504. Sliding sleeve; 505. Guide slide bar; 6. Support frame; 601. X-axis stepper motor; 602. X-axis lead screw; 603. Screw hole; 604. X-axis slide bar; 605. X-axis slider. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0024] Example

[0025] like Figures 1-6 As shown, a part machining positioning fixture for a CNC machine tool includes: a CNC machine tool 1, a fixture table 101 disposed on the top of the CNC machine tool 1, a fixture 102 mounted on the top of the fixture table 101, and a clamping assembly disposed on the top of the fixture 102. The clamping assembly includes: a clamping cylinder 2, a telescopic rod a201, a connector 202, a mounting base 203, and a clamping block 204.

[0026] The clamp 102 has three clamping cylinders 2 fixedly mounted on its top by bolts. The three clamping cylinders 2 are triangular in structure. Each of the three clamping cylinders 2 has a telescopic rod a201 installed at its output end. Each of the telescopic rods a201 has a connector 202 installed at its inner end. Each of the three clamping cylinders 2 has a mounting seat 203 on its inner side. Each of the mounting seats 203 has a clamping block 204 fixedly mounted on its top by bolts. The top of the clamping block 204 is fixedly mounted to the connector 202 by bolts.

[0027] When drilling a part, place the part at the top center of the fixture 102, ensuring that all clamping blocks 204 face the part. Press the part down firmly to prevent it from tipping over. Once the part is clamped, remove your hand. At this point, activate the clamping cylinder 2. The clamping cylinder 2 drives the telescopic rod a201 to move the clamping blocks 204 toward the part, making them contact the outer side of the part. Because the three clamping cylinders 2 and the clamping blocks 204 are arranged in a triangular structure, there are three different clamping points for the part. This allows for a wider distribution of clamping force, enabling clamping and fixing of parts with different shapes. This ensures that the part will not move or tilt during drilling, avoiding affecting the drilling accuracy and improving the quality of the part processing.

[0028] The fixture 102 has three movable slide grooves 205 on its top. The mounting base 203 is equipped with a limiting slider 206 that is slidably connected to the movable slide grooves 205. When the telescopic rod a201 pushes the connector 202, the clamping block 204 and the mounting base 203 to move back and forth for adjustment, the limiting slider 206 at the bottom of the mounting base 203 slides synchronously inside the movable slide grooves 205 to avoid resistance at the bottom of the mounting base 203 and ensure that the clamping block 204 can move and adjust normally to clamp and fix the parts.

[0029] Among them, a fixed block 4 is installed on one side of the top of the CNC machine tool 1, a Y-axis stepper motor 401 is installed on the outer end of the fixed block 4, a Y-axis lead screw 402 is installed on the output end of the Y-axis stepper motor 401, the other end of the Y-axis lead screw 402 is rotatably connected to one side of the top of the CNC machine tool 1 through a bearing, a moving block 403 is threaded on the Y-axis lead screw 402, the moving block 403 is connected to the fixture table 101, Y-axis slide rods 404 are installed on both sides of the inner end of the fixed block 4, and Y-axis sliders 405 that are slidably connected to the Y-axis slide rods 404 are installed on both sides of the bottom of the fixture table 101.

[0030] After the part is clamped and fixed on the fixture 102, the Y-axis stepper motor 401 is started. The Y-axis stepper motor 401 drives the Y-axis lead screw 402 to reverse. Since the moving block 403 is threadedly connected to the Y-axis lead screw 402, the Y-axis lead screw 402 can rotate threadedly with the moving block 403. The Y-axis lead screw 402 can drive the moving block 403 to move backward, so that the moving block 403 will drive the fixture table 101 and the fixture 102 to move backward, move the part to the bottom of the drill rod 303, and then turn off the Y-axis stepper motor 401.

[0031] As the moving block 403 drives the fixture table 101 to move back and forth, the Y-axis sliders 405 on both sides of the bottom of the fixture table 101 can slide synchronously back and forth on the Y-axis slider 404 to maintain the stability of the fixture table 101's back and forth movement and ensure the smooth use of the fixture table 101.

[0032] The fixture 102 has a servo motor 3 on top, a mounting block 301 on the outside of the servo motor 3, a mounting head 302 on the output shaft at the bottom of the servo motor 3, a drill rod 303 on the bottom of the mounting head 302, a moving frame 5 on the outside of the servo motor 3, a lifting cylinder 501 on top of the moving frame 5, a telescopic rod b502 on the bottom output end of the lifting cylinder 501, a movable block 503 on the bottom of the telescopic rod b502, the mounting block 301 and the movable block 503 are connected, a sliding sleeve 504 is installed on both sides of the top of the movable block 503, and guide rods 505 that are slidably connected to the sliding sleeves 504 are installed on both sides inside the moving frame 5.

[0033] After the part is moved to the bottom of the drill rod 303, the lifting cylinder 501 and the servo motor 3 are started. The lifting cylinder 501 drives the telescopic rod b502 to move downward. The telescopic rod b502 pushes the movable block 503, the mounting block 301, the servo motor 3 and the drill rod 303 downward, so that the drill rod 303 moves down to contact the part. At this time, the servo motor 3 drives the output shaft to drive the mounting head 302 and the drill rod 303 to rotate at high speed, so that the drill rod 303 performs drilling operations on the part.

[0034] During the up-and-down movement of the movable block 503 driven by the telescopic rod b502, the sliding sleeves 504 on both sides of the top of the movable block 503 can slide up and down synchronously on the guide slide rod 505 to maintain the stability of the up-and-down movement of the movable block 503 and ensure the smooth use of the movable block 503.

[0035] The CNC machine tool 1 has support frames 6 installed on both sides of its top. One of the support frames 6 has an X-axis stepper motor 601 installed on one side of its outer end. The output end of the X-axis stepper motor 601 is equipped with an X-axis lead screw 602. The other end of the X-axis lead screw 602 is rotatably connected to the other support frame 6 through a bearing. The outer side of the movable frame 5 has a screw hole 603 that is threaded to the X-axis lead screw 602. An X-axis slide bar 604 is installed between the two support frames 6. An X-axis slider 605 that is slidably connected to the X-axis slide bar 604 is installed on the outer side of the movable frame 5.

[0036] During the drilling process of the part, the X-axis stepper motor 601 is started. The X-axis stepper motor 601 can drive the X-axis lead screw 602 to rotate forward and backward. Since the moving frame 5 is threadedly connected to the X-axis lead screw 602 through the screw hole 603, the X-axis lead screw 602 can rotate with the moving frame 5. The X-axis lead screw 602 can drive the moving frame 5 to move left and right, so that the moving frame 5 can drive the movable block 503, the mounting block 301, the servo motor 3, and the drill rod 303 to move left and right for adjustment. In conjunction with the Y-axis stepper motor 401 and the Y-axis lead screw 402, the fixture 102 and the part can be moved back and forth, so that the drill rod 303 can drill holes at different positions on the top surface of the part.

[0037] After drilling the part is completed, the Y-axis stepper motor 401 is started to drive the Y-axis lead screw 402 to rotate forward. Since the moving block 403 is threadedly connected to the Y-axis lead screw 402, the Y-axis lead screw 402 can rotate with the moving block 403. The Y-axis lead screw 402 can drive the moving block 403 to move forward, so that the moving block 403 will drive the fixture table 101 and the fixture 102 to move forward, remove the part from the bottom of the drill rod 303, and then the clamping block 204 is removed from the outside of the part to release the clamp, making it easier to disassemble the part clamped on the fixture 102.

[0038] During the left and right movement of the moving frame 5 driven by the X-axis lead screw 602, the X-axis slider 605 on the outside of the moving frame 5 can slide synchronously on the X-axis slide bar 604 to maintain the stability of the left and right movement of the moving frame 5 and ensure the smooth use of the moving frame 5.

[0039] Working principle:

[0040] When drilling a part, place the part at the top center of the fixture 102, ensuring that all clamping blocks 204 face the part. Press the part down firmly to prevent it from tipping over. Once the part is clamped, remove your hand. At this point, activate the clamping cylinder 2. The clamping cylinder 2 drives the telescopic rod a201 to move the clamping blocks 204 toward the part, making them contact the outer side of the part. Because the three clamping cylinders 2 and the clamping blocks 204 are arranged in a triangular structure, there are three different clamping points for the part. This allows for a wider distribution of clamping force, enabling clamping and fixing of parts with different shapes. This ensures that the part will not move or tilt during drilling, avoiding affecting the drilling accuracy and improving the quality of the part processing.

[0041] After the part is clamped and fixed on the fixture 102, the Y-axis stepper motor 401 is started. The Y-axis stepper motor 401 drives the Y-axis lead screw 402 to reverse. Since the moving block 403 is threadedly connected to the Y-axis lead screw 402, the Y-axis lead screw 402 can rotate threadedly with the moving block 403. The Y-axis lead screw 402 can drive the moving block 403 to move backward, so that the moving block 403 will drive the fixture table 101 and the fixture 102 to move backward, moving the part to the bottom of the drill rod 303. The Y-axis stepper motor 401 is turned off, and the lifting cylinder 501 and servo motor 3 are started. The lifting cylinder 501 drives the telescopic rod b502 to move downward. The telescopic rod b502 pushes the movable block 503, the mounting block 301, the servo motor 3, and the drill rod 303 downward, so that the drill rod 303 moves down to contact the part. At this time, the servo motor 3 drives the output shaft to drive the mounting head 302 and the drill rod 303 to rotate at high speed, so that the drill rod 303 performs drilling operations on the part.

[0042] During the drilling process of the part, the X-axis stepper motor 601 is started. The X-axis stepper motor 601 can drive the X-axis lead screw 602 to rotate forward and backward. Since the moving frame 5 is threadedly connected to the X-axis lead screw 602 through the screw hole 603, the X-axis lead screw 602 can rotate with the moving frame 5. The X-axis lead screw 602 can drive the moving frame 5 to move left and right, so that the moving frame 5 can drive the movable block 503, the mounting block 301, the servo motor 3, and the drill rod 303 to move left and right for adjustment. In conjunction with the Y-axis stepper motor 401 and the Y-axis lead screw 402, the fixture 102 and the part can be moved back and forth, so that the drill rod 303 can drill holes at different positions on the top surface of the part.

[0043] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0044] The above provides a detailed description of a CNC machine tool part machining positioning fixture provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A part positioning jig for use in a numerically controlled machine tool, characterized by, The utility model relates to a numerical control machine tool (1) is provided with the clamping table (101) of the clamping table (101) top of numerical control machine tool (1), the clamping (102) of the clamping (102) top of clamping table (101), the clamping assembly of the clamping assembly top of clamping (102), the clamping assembly includes: clamping cylinder (2), telescopic rod a (201), connector (202), mounting seat (203) and clamping block (204). Three clamping cylinders (2) are fixedly installed on the top of the clamping (102) through bolts, the three clamping cylinders (2) are in a triangular structure, telescopic rod a (201) is installed on the output end of the three clamping cylinders (2), connector (202) is installed on the inner end of the telescopic rod a (201), mounting seat (203) is arranged on the inner side of the three clamping cylinders (2), clamping block (204) is fixedly installed on the top of the mounting seat (203) through bolts, and the top of the clamping block (204) is fixedly installed with the connector (202) through bolts. Three moving grooves (205) are formed in the top of the clamping (102), and a limiting sliding block (206) in sliding connection with the moving grooves (205) is arranged on the bottom of the mounting seat (203). A servo motor (3) is arranged on the top of the clamping (102), a mounting block (301) is arranged on the outside of the servo motor (3), an installation head (302) is arranged on the output shaft at the bottom of the servo motor (3), and a drill rod (303) is arranged on the bottom of the installation head (302). A fixed block (4) is arranged on one side of the top of the numerical control machine tool (1), a Y-axis stepping motor (401) is arranged on the outer end of the fixed block (4), a Y-axis lead screw (402) is arranged on the output end of the Y-axis stepping motor (401), the other end of the Y-axis lead screw (402) is rotatably connected to one side of the top of the numerical control machine tool (1) through a bearing, a moving block (403) is threadedly connected to the Y-axis lead screw (402), the moving block (403) is connected to the clamping table (101), Y-axis sliding rods (404) are arranged on the inner end of the fixed block (4), Y-axis sliding blocks (405) in sliding connection with the Y-axis sliding rods (404) are arranged on the bottom of the clamping table (101).

2. The part positioning fixture for CNC machine tools according to claim 1, characterized in that, A movable frame (5) is arranged on the outside of the servo motor (3), a lifting cylinder (501) is arranged on the top of the movable frame (5), a telescopic rod b (502) is arranged on the output end at the bottom of the lifting cylinder (501), a movable block (503) is arranged on the bottom of the telescopic rod b (502), the mounting block (301) is connected to the movable block (503), slide sleeves (504) are arranged on the top of the movable block (503), guide sliding rods (505) in sliding connection with the slide sleeves (504) are arranged on the inner sides of the movable frame (5).

3. The part positioning fixture for CNC machine tools according to claim 2, characterized in that, ​ 4. The part positioning fixture for CNC machine tools according to claim 1, characterized in that, ​ 5. The part positioning fixture for CNC machine tools according to claim 1, characterized in that, ​ 6. The part positioning fixture for CNC machine tools according to claim 4, characterized in that, ​ 7. The part positioning fixture for CNC machine tools according to claim 6, characterized in that, The numerical control machine tool (1) top both sides are installed with support frame (6), one of the support frame (6) outer end one side is installed with X axis stepping motor (601), the output of X axis stepping motor (601) is installed with X axis screw rod (602), the other end of X axis screw rod (602) is rotatably connected with the other support frame (6) through bearing, the outer side of moving frame (5) is opened with the screw hole (603) that is connected with the thread of X axis screw rod (602), X axis sliding rod (604) is installed between two support frames (6), the outer side of moving frame (5) is installed with X axis sliding block (605) that is connected with the sliding of X axis sliding rod (604).

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