Fixing device for large-stroke rapid tool servo high-precision machining

Abstract

The utility model relates to the technical field of high-precision machining, in particular to a large-stroke rapid cutter servo high-precision machining fixing device which comprises an installation table, a fine adjustment mechanism is arranged below the installation table and comprises a first adjustment box rotationally connected to the bottom end of the installation table, and the inner end of a first rotating rod is fixedly connected with a worm. A worm gear is meshed with the outer side of the worm, rotationally connected to the bottom of a first adjusting box and fixedly connected with the bottom end of the mounting table, and an adjusting plate is fixedly connected to the bottom end of the first adjusting box. Through the cooperation of the mounting table and the fine adjustment mechanism, the movable block moves along the inner groove by rotating the second rotating rod, and then fine adjustment of the inclination of the adjusting plate is achieved through the cooperation of the movable groove, the fixed block and the adjusting plate; rotation of the mounting table is achieved through cooperation of the worm and the worm gear, the self-locking effect is provided to prevent shaking, and therefore rotation fine adjustment is achieved, and the machining error rate is reduced.

Description

Technical Field

[0001] This utility model relates to the field of high-precision machining technology, specifically to a fixing device for high-precision machining of large-stroke rapid-speed cutting tools using servo systems. Background Technology

[0002] Fast tool servo (FTS) is a high-frequency, high-precision micro-feed device used in ultra-precision machining. It superimposes high-frequency micro-amplitude motion onto traditional machine tool motion. Large-stroke FTS specifically refers to an FTS system with a large stroke range (typically on the millimeter level). Technical characteristics Large stroke capacity: displacement up to several millimeters, far exceeding the tens of micrometers of traditional piezoelectric FTS; high frequency response: bandwidth typically above several hundred Hz; nanometer-level accuracy: positioning resolution up to the nanometer level; dynamic performance: high acceleration (up to 10g or more).

[0003] The existing processing equipment uses rigid clamping structures to hold workpieces, which cannot rotate and fine-tune the workpieces. This limits the processing of the workpieces, and if the workpieces are not compatible with the equipment's fine-tuning, more and more defective products will be produced, and the yield rate will decrease.

[0004] Therefore, it is necessary to invent a fixing device for high-precision servo machining of large-stroke, high-speed tools to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a fixing device for high-precision machining of large-stroke, high-speed cutting tools using servo systems. Fine-tuning is achieved through the cooperation of a mounting table and a fine-tuning mechanism, thereby solving the problem in the prior art that the workpiece cannot be rotated for fine-tuning, which limits the machining of the workpiece.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fixing device for high-precision servo machining of large-stroke rapid-speed cutting tools, including a mounting platform. A fine-tuning mechanism is provided below the mounting platform. The fine-tuning mechanism includes a first adjustment box rotatably connected to the bottom end of the mounting platform. A first rotating rod is rotatably connected to the outer side of the first adjustment box. A worm gear is fixedly connected to the inner end of the first rotating rod. A worm wheel meshes with the outer side of the worm gear. The worm wheel is rotatably connected to the bottom of the first adjustment box. The worm wheel is fixedly connected to the bottom end of the mounting platform. An adjustment plate is fixedly connected to the bottom end of the first adjustment box. A fixing block is hinged to the left end of the adjustment plate, and a shaped block is fixedly connected to the bottom end of the adjustment plate. The rotation of the mounting platform is achieved by utilizing the cooperation of the worm gear and the worm wheel, and a self-locking effect is provided to prevent shaking. This achieves rotational fine-tuning, reduces the machining error rate, improves the machining yield, and adjusts the tilt angle through the rotation of the adjustment plate.

[0007] Preferably, a second adjustment box is fixedly connected to the bottom end of the fixed block, and a movable groove is formed on the surface of the fixed block. The area of ​​the movable groove is larger than the area of ​​the adjustment plate, and the adjustment range of the adjustment plate is expanded by the area difference between the adjustment plate and the movable groove.

[0008] Preferably, a second rotating rod is rotatably connected inside the second adjusting box, and a movable block is threadedly connected to the outer wall of the second rotating rod. A roller seat is fixedly connected to the top of the movable block, and the movable block is moved by rotating the second rotating rod.

[0009] Preferably, the bottom end of the adjustment plate has an inner groove, inside which a movable wheel rolls and is rotatably connected to the inside of a roller seat. The roller seat is slidably connected to the inside of the inner groove, and the tilt of the adjustment plate is controlled by the cooperation between the roller seat and the inner groove.

[0010] Preferably, the top of the mounting platform is provided with several sets of threaded holes, and the top of the mounting platform is provided with a connecting seat. The top of the connecting seat is fixedly connected to a lower clamping mold. Clamping modules of different shapes are installed by cooperating with the threaded holes and the connecting seat to improve adaptability.

[0011] Preferably, the upper clamping mold is abutted against the lower clamping mold above, and two sets of extension blocks are fixedly connected to the bottom end of the upper clamping mold. The connecting seat and the extension blocks are both connected by bolts to threaded holes, and the connecting seat, extension blocks and other parts are fixed through the threaded holes.

[0012] Preferably, the top end of the upper clamping mold is threaded with a fixing screw, and the bottom end of the upper clamping mold and the top end of the extension block are fixedly connected with a friction layer. The friction layer is made of a mixture of tungsten powder and silicone. The fixing screw is used to fix the workpiece, and the friction layer is used to increase static friction to reduce displacement caused by vibration during processing, thereby further improving accuracy.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] By coordinating the mounting platform and the fine-tuning mechanism, rotating the second rotating rod causes the movable block to move along the inner groove. This, in turn, allows for fine-tuning of the tilt of the adjusting plate through the cooperation of the movable groove, the fixed block, and the adjusting plate. Rotating the first rotating rod drives the worm gear to rotate, and the cooperation between the worm gear and the worm wheel enables the mounting platform to rotate and provides a self-locking effect to prevent wobbling. This achieves rotational fine-tuning, reduces the processing error rate, and improves the processing yield. Furthermore, the tilt is adjusted by rotating the adjusting plate, thus enhancing the practicality of the structure. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

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

[0017] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the fine-tuning mechanism of this utility model;

[0019] Figure 4 This is a side view of the structure of this utility model;

[0020] Figure 5 This is an enlarged structural diagram of the extension block of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Mounting platform; 2. Fine-tuning mechanism; 201. First adjustment box; 202. First rotating rod; 203. Worm gear; 204. Worm wheel; 205. Adjustment plate; 206. Fixed block; 207. Movable groove; 208. Second adjustment box; 209. Second rotating rod; 210. Movable block; 211. Roller seat; 212. Inner groove; 3. Threaded hole; 4. Connecting seat; 5. Extension block; 6. Upper clamping mold; 7. Fixed screw; 8. Lower clamping mold; 9. Friction layer. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model provides, for example Figure 1-5The mounting device for high-precision servo machining with a large-stroke, high-speed tool, shown, includes a mounting platform 1. A fine-tuning mechanism 2 is located below the mounting platform 1. The fine-tuning mechanism 2 includes a first adjustment box 201 rotatably connected to the bottom of the mounting platform 1. A first rotating rod 202 is rotatably connected to the outer side of the first adjustment box 201. A worm gear 203 is fixedly connected to the inner end of the first rotating rod 202. A worm wheel 204 meshes with the outer side of the worm gear 203. The worm wheel 204 is rotatably connected to the bottom of the first adjustment box 201 and fixedly connected to the bottom of the mounting platform 1. An adjustment plate 205 is fixedly connected to the bottom of the first adjustment box 201. A fixed block 206 is hinged to the left end of the adjusting plate 205, and a shaped block is fixedly connected to the bottom end of the adjusting plate 205. The rotation of the mounting platform 1 is achieved through the cooperation of the worm gear 203 and the worm wheel 204, providing a self-locking effect to prevent shaking. This enables fine-tuning of rotation, reduces the processing error rate, and improves the processing yield. The tilt angle is adjusted by rotating the adjusting plate 205. A second adjusting box 208 is fixedly connected to the bottom end of the fixed block 206. A movable groove 207 is formed on the surface of the fixed block 206. The area of ​​the movable groove 207 is larger than the area of ​​the adjusting plate 205. The area difference between the adjusting plate 205 and the movable groove 207 increases the... The adjustment range of the adjustment plate 205 is determined by the following: a second rotating rod 209 is rotatably connected inside the second adjustment box 208; a movable block 210 is threadedly connected to the outer wall of the second rotating rod 209; a roller seat 211 is fixedly connected to the top of the movable block 210; rotating the second rotating rod 209 moves the movable block 210; an inner groove 212 is provided at the bottom of the adjustment plate 205; a movable wheel rolls inside the inner groove 212 and is rotatably connected to the inside of the roller seat 211; the roller seat 211 is slidably connected to the inside of the inner groove 212; the tilt of the adjustment plate 205 is controlled by the cooperation between the roller seat 211 and the inner groove 212. By cooperating with the mounting platform 1 and the fine-tuning mechanism 2, rotating the second rotating rod 209 causes the movable block 210 to move along the inner groove 212. Then, through the cooperation of the movable groove 207, the fixed block 206 and the adjusting plate 205, the tilt of the adjusting plate 205 is finely adjusted. Rotating the first rotating rod 202 drives the worm gear 203 to rotate. The cooperation of the worm gear 203 and the worm wheel 204 enables the mounting platform 1 to rotate and provides a self-locking effect to prevent shaking. This achieves rotational fine-tuning, reduces the processing error rate, and improves the processing yield. The tilt is adjusted by rotating the adjusting plate 205, thereby improving the practicality of the structure.

[0025] Refer to the instruction manual appendix Figure 1-5The mounting platform 1 has several sets of threaded holes 3 on its top. A connecting seat 4 is provided on the top of the mounting platform 1. A lower clamping mold 8 is fixedly connected to the top of the connecting seat 4. Clamping modules of different shapes are installed through the cooperation of the threaded holes 3 and the connecting seat 4 to improve adaptability. An upper clamping mold 6 is abutted above the lower clamping mold 8. Two sets of extension blocks 5 are fixedly connected to the bottom of the upper clamping mold 6. The connecting seat 4 and the extension blocks 5 are both bolted to the threaded holes 3. The connecting seat 4, extension blocks 5 and other parts are fixed through the threaded holes 3. A fixing screw 7 is threadedly connected to the top of the upper clamping mold 6. A friction layer 9 is fixedly connected to the bottom of the upper clamping mold 6 and the top of the extension blocks 5. The friction layer 9 is made of tungsten powder and silicone. The workpiece is fixed by the fixing screw 7. The friction layer 9 increases the static friction to reduce the displacement caused by vibration during processing, thereby further improving accuracy.

[0026] The working principle of this practical application is as follows:

[0027] Refer to the instruction manual appendix Figure 1-5 When a large-stroke, high-speed tool servo device is needed for precision machining of a workpiece, the extension block 5 and connecting seat 4 adapted to the workpiece are first installed onto the surface of the threaded hole 3 and mounting table 1 using bolts. Then, the fixing screw 7 is rotated to lower the fixing screw 7 to clamp the workpiece. After clamping the workpiece, the static friction is increased by the friction layer 9 to reduce the displacement caused by vibration during machining, thereby further improving accuracy. Before machining, rotating the second rotating rod 209 causes the movable block 210 to move along the inner groove 212, and then through the movable groove 207, the fixing block 206 and the adjusting plate 20 The cooperation of roller 211 causes the movable wheel inside the roller seat 211 to move the adjusting plate 205. When the movable wheel is on the left side of the irregular block of the adjusting plate 205, the adjusting plate 205 rotates downward, and vice versa, so as to achieve fine adjustment of the tilt of the adjusting plate 205. Rotating the first rotating rod 202 drives the worm gear 203 to rotate. The cooperation between the worm gear 203 and the worm wheel 204 realizes the rotation of the mounting platform 1 and provides a self-locking effect to prevent shaking, thereby realizing rotational fine adjustment, reducing the processing error rate, improving the processing yield, and adjusting the tilt by rotating the adjusting plate 205, thereby improving the practicality of the structure.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fixing device for high-precision machining of large-stroke, high-speed servo tools, comprising a mounting table (1), characterized in that: A fine-tuning mechanism (2) is provided below the mounting platform (1). The fine-tuning mechanism (2) includes a first adjustment box (201) rotatably connected to the bottom end of the mounting platform (1). A first rotating rod (202) is rotatably connected to the outer side of the first adjustment box (201). A worm gear (203) is fixedly connected to the inner end of the first rotating rod (202). A worm wheel (204) meshes with the outer side of the worm gear (203). The worm wheel (204) is rotatably connected to the bottom of the first adjustment box (201). The worm wheel (204) is fixedly connected to the bottom end of the mounting platform (1). An adjustment plate (205) is fixedly connected to the bottom end of the first adjustment box (201). A fixing block (206) is hinged to the left end of the adjustment plate (205), and a shaped block is fixedly connected to the bottom end of the adjustment plate (205).

2. The fixed device of long-stroke rapid tool servo high-precision machining according to claim 1, characterized in that: The bottom end of the fixed block (206) is fixedly connected to the second adjustment box (208), and the surface of the fixed block (206) is provided with a movable groove (207), the area of ​​the movable groove (207) being larger than the area of ​​the adjustment plate (205).

3. The fixturing apparatus for high precision machining with long stroke rapid tool servo according to claim 2, wherein: The second adjustment box (208) is rotatably connected to a second rotating rod (209), and the outer side wall of the second rotating rod (209) is threadedly connected to a movable block (210). The top of the movable block (210) is fixedly connected to a roller seat (211).

4. The fixturing apparatus for high precision machining with long stroke rapid tool servo according to claim 1, wherein: The bottom end of the adjustment plate (205) is provided with an inner groove (212), and a movable wheel rolls inside the inner groove (212) and the movable wheel is rotatably connected to the inside of the roller seat (211). The roller seat (211) is slidably connected to the inside of the inner groove (212).

5. The fixturing apparatus for high precision machining with long stroke rapid tool servo according to claim 1, wherein: The top of the mounting platform (1) is provided with several sets of threaded holes (3), and the top of the mounting platform (1) is provided with a connecting seat (4), and the top of the connecting seat (4) is fixedly connected with a lower clamping mold (8).

6. The fixed device of long-stroke rapid tool servo high-precision machining according to claim 5, characterized in that: The upper clamping mold (6) is abutted against the lower clamping mold (8). Two sets of extension blocks (5) are fixedly connected to the bottom end of the upper clamping mold (6). The connecting seat (4) and the extension blocks (5) are both connected by bolts to the threaded hole (3).

7. The fixturing apparatus for high precision machining with long stroke rapid tool servo according to claim 6, wherein: The top end of the upper clamping mold (6) is threaded with a fixing screw (7), and the bottom end of the upper clamping mold (6) is fixedly connected to the top end of the extension block (5) with a friction layer (9), which is made of tungsten powder and silicone.

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