Positioning tool for five-axis machining center

Abstract

The utility model discloses a positioning tool for a five-axis machining center, and relates to the technical field of machining positioning, the positioning tool comprises a table top, a clamping device is arranged on the top surface of the table top, the clamping device comprises a base, a plurality of through grooves distributed at equal intervals are formed in the top surface of the base, a two-way threaded rod is rotationally connected between the through grooves in the middle, and the two-way threaded rod is connected with the top surface of the table top. The outer surface of the bidirectional threaded rod is sleeved with two first screw blocks in a threaded mode, a guide rail is fixedly connected between the through grooves in the two sides, sliding blocks are symmetrically and slidably connected to one side of the upper end of the guide rail, a fixing frame is symmetrically arranged on one side of the top face of the base, and a plurality of clamping blocks are symmetrically arranged on one side of the fixing frame. According to the positioning tool for the five-axis machining center, workpieces of different sizes and types can be clamped and fixed, and the clamped and fixed workpieces can be driven to be subjected to angle adjustment.

Description

Technical Field

[0001] This application relates to the field of machining positioning technology, and in particular to a positioning fixture for a five-axis machining center. Background Technology

[0002] Five-axis machining is an advanced CNC machining technology that uses computer control to enable the cutting tools to perform complex cutting operations on the workpiece under flexible control and linkage, thus enabling the manufacturing of complex-shaped parts. Therefore, positioning fixtures are essential for five-axis machining.

[0003] Regarding the aforementioned technologies, the inventors believe that during the processing, such as milling and drilling, the workpiece may be displaced due to equipment vibration. For irregularly shaped workpieces, if the machine cannot adapt to their outline, it is inconvenient to effectively fix workpieces of various sizes and types, resulting in low practicality. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this application is to provide a positioning fixture for a five-axis machining center to improve the problem of inconvenience in clamping and fixing workpieces of different sizes and types.

[0005] The positioning fixture for a five-axis machining center provided in this application adopts the following technical solution: A positioning fixture for a five-axis machining center includes a table, a clamping device on the top surface of the table, a base, a plurality of equally spaced through slots on the top surface of the base, a bidirectional threaded rod rotatably connected between the through slots, a first motor fixedly connected to one side of the base, the output end of the first motor extending into the through slot and fixedly connected to the bidirectional threaded rod, two first threaded blocks threaded onto the outer surface of the bidirectional threaded rod, a fixing frame symmetrically provided on one side of the top surface of the base, a plurality of clamping blocks symmetrically provided on one side of the fixing frame, and an adjustment device fixedly connected to the bottom surface of the base and the top surface of the table.

[0006] By adopting the above technical solution, the workpiece is first placed in the middle of the base. When it is necessary to clamp and position the workpiece, the first motor is started. The output end of the first motor drives the bidirectional threaded rod to rotate. When the bidirectional threaded rod rotates, the two first threaded blocks will move in opposite directions along the bidirectional threaded rod. During the movement of the first threaded blocks, the slider slides along the guide rail, which can ensure that the fixed frame moves smoothly with the first threaded blocks. When the fixed frame moves, the rotation of the first turntable and the second turntable drives the clamping block to move, so that the clamping block can better adapt to the shape contour of the workpiece. Multiple clamping blocks approach from different directions, thereby achieving the purpose of clamping and fixing workpieces of different sizes and types.

[0007] Optionally, the adjusting device includes symmetrically distributed connecting frames. A lead screw is movably inserted through one side of the connecting frame. One end of the lead screw is rotatably connected to the inner wall of one side of the connecting frame. A sprocket is fixedly connected to the other end of the lead screw. A chain is meshed between the sprockets. A second motor is fixedly connected to the top surface of the platform. The output end of the second motor is fixedly connected to one of the sprockets. A base plate is provided above the platform. A limit frame is symmetrically fixedly connected to one side of the base plate. A limit rod is symmetrically fixedly connected to the upper end of the platform. A sliding groove is provided on one side of the limit frame. A second lead block is threaded onto the outer surface of the lead screw. Two fixing blocks are symmetrically fixedly connected to the second lead block on one side of the base plate. A rotating plate is rotatably connected between every two adjacent fixing blocks.

[0008] By adopting the above technical solution, when the angle of the workpiece needs to be adjusted, the second motor is started. The output end of the second motor drives the sprocket fixedly connected to it to rotate. When one sprocket rotates, the chain will synchronously drive the other sprocket to rotate, which in turn drives the lead screw to rotate. The second lead block will move linearly along the lead screw. The limiting frame cooperates with the limiting rod through the sliding groove to play a guiding and limiting role. The linear movement of the second lead block will drive the rotating plate to rotate. Under the pushing action of the rotating plate, the base plate will slowly tilt to adjust the angle of the workpiece, thereby achieving the purpose of adjusting the angle of the clamped and fixed workpiece.

[0009] Optionally, a guide rail is fixedly connected between the through slots on both sides, and a slider is symmetrically slidably connected to one side of the upper end of the guide rail.

[0010] By adopting the above technical solution, the slider slides along the guide rail during the movement of the first wire block.

[0011] Optionally, the top surface of the slider on the same side and the first wire block are fixedly connected to the fixed frame.

[0012] By adopting the above technical solution, the slider slides along the guide rail, which can ensure that the fixed frame moves smoothly with the first wire block.

[0013] Optionally, a first turntable is symmetrically rotatably connected to one side of the top surface of the fixed frame, a second turntable is symmetrically rotatably connected to one side of the top surface of the first turntable, and the top surface of the second turntable is rotatably connected to two clamping blocks.

[0014] By adopting the above technical solution, when the fixed frame moves, the rotation connection of the first turntable and the second turntable drives the clamping block to move, so that the clamping block can better adapt to the shape contour of the workpiece, and multiple clamping blocks approach from different directions to clamp and fix workpieces of different sizes and types.

[0015] Optionally, the two first threaded blocks are respectively threaded onto opposite threads on the outer surface of the bidirectional threaded rod.

[0016] By adopting the above technical solution, the two first thread blocks will move in opposite directions along the bidirectional threaded rod in a straight line.

[0017] Optionally, a first connecting plate is symmetrically fixedly connected to the side of the platform away from the chain, and a second connecting plate is hinged to the upper end of the first connecting plate, with the top surface of the second connecting plate fixedly connected to the bottom plate.

[0018] By adopting the above technical solution, the first connecting plate and the second connecting plate can better cooperate with the tilting and rotation of the base plate.

[0019] Optionally, the outer surface of the limiting rod is in contact with the inner wall of the slide groove.

[0020] By adopting the above technical solution, the limiting frame uses a sliding groove and a limiting rod to guide and limit movement.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] This invention utilizes the first threaded block to move in opposite directions along the bidirectional threaded rod. The rotation of the first and second turntables drives the movement of the clamping blocks, allowing the clamping blocks to better adapt to the shape and contour of the workpiece. Multiple clamping blocks approach from different directions, thereby achieving the purpose of clamping and fixing workpieces of different sizes and types. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a schematic diagram of the clamping device of this utility model.

[0025] Figure 3 This is a schematic diagram of the adjustment device of this utility model.

[0026] In the diagram, 1. Tabletop; 2. Adjustment device; 3. Clamping device; 201. Connecting frame; 202. Lead screw; 203. Sprocket; 204. Chain; 205. Second motor; 206. First connecting plate; 207. Second connecting plate; 208. Base plate; 209. Limiting frame; 210. Limiting rod; 211. Slide groove; 212. Second lead screw block; 213. Fixing block; 214. Turning plate; 301. Base; 302. Through groove; 303. Bidirectional threaded rod; 304. First motor; 305. Guide rail; 306. Slider; 307. First lead screw block; 308. Fixing frame; 309. First turntable; 310. Second turntable; 311. Clamping block. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1 - Appendix Figure 3This application will be described in further detail below.

[0028] A positioning fixture for a five-axis machining center, as shown in the reference. Figure 1 and Figure 2 The system includes a tabletop 1, with a clamping device 3 on the top surface of the tabletop 1. The clamping device 3 includes a base 301, with multiple equally spaced through slots 302 on the top surface of the base 301. A bidirectional threaded rod 303 is rotatably connected between the through slots 302 in the middle. A first motor 304 is fixedly connected to one side of the base 301. The output end of the first motor 304 extends into the through slot 302 and is fixedly connected to the bidirectional threaded rod 303. A guide rail 305 is fixedly connected between the through slots 302 on both sides. A slider 306 is symmetrically slidably connected to one side of the upper end of the guide rail 305. During the movement of the first threaded block 307, the slider 306 slides along the guide rail 305, which can ensure that the fixed frame 308 moves smoothly with the first threaded block 307. Two first threaded blocks 307 are threadedly sleeved on the outer surface of the bidirectional threaded rod 303. The two first threaded blocks 307 are respectively threadedly sleeved on the opposite threads on the outer surface of the bidirectional threaded rod 303.

[0029] Reference Figure 2 The output end of the first motor 304 drives the bidirectional threaded rod 303 to rotate. When the bidirectional threaded rod 303 rotates, the two first thread blocks 307 will move in opposite directions along the bidirectional threaded rod 303. A fixed frame 308 is symmetrically provided on one side of the top surface of the base 301. The slider 306 on the same side and the top surface of the first thread blocks 307 are fixedly connected to the fixed frame 308. A plurality of clamping blocks 311 are symmetrically provided on one side of the fixed frame 308. A first turntable 309 is symmetrically rotatably connected to one side of the top surface of the fixed frame 308. A second turntable 310 is symmetrically rotatably connected to one side of the top surface of the first turntable 309.

[0030] Reference Figure 2 The top surface of the second turntable 310 is rotatably connected to two clamping blocks 311. When the fixed frame 308 moves, the rotational connection of the first turntable 309 and the second turntable 310 drives the clamping blocks 311 to move, so that the clamping blocks 311 can better adapt to the outline of the workpiece. Multiple clamping blocks 311 approach from different directions to clamp and fix workpieces of different sizes and types. The bottom surface of the base 301 and the top surface of the table 1 are fixedly connected to the adjustment device 2.

[0031] Reference Figure 3The adjusting device 2 includes a symmetrically distributed connecting frame 201. A lead screw 202 is movably inserted through one side of the connecting frame 201. One end of the lead screw 202 is rotatably connected to the inner wall of one side of the connecting frame 201. The other end of the lead screw 202 is fixedly connected to a sprocket 203. A chain 204 is meshed between the sprockets 203. A second motor 205 is fixedly connected to the top surface of the platform 1. The output end of the second motor 205 is fixedly connected to one of the sprockets 203. The output end of the second motor 205 drives the sprocket 203 fixedly connected to it to rotate. When one of the sprockets 203 rotates, the chain 204 will synchronously drive the other sprocket 203 to rotate, which in turn will drive the lead screw 202 to rotate.

[0032] Reference Figure 3 A base plate 208 is provided above the platform 1. A first connecting plate 206 is symmetrically fixedly connected to the side of the platform 1 away from the chain 204. A second connecting plate 207 is hinged to the upper end of the first connecting plate 206. The top surface of the second connecting plate 207 is fixedly connected to the base plate 208. A limit frame 209 is symmetrically fixedly connected to one side of the base plate 208. A limit rod 210 is symmetrically fixedly connected to the upper end of the platform 1. A groove 211 is provided on one side of the limit frame 209. The outer surface of the limit rod 210 fits against the inner wall of the groove 211. The second screw block 212 will move linearly along the screw 202. The limit frame 209 cooperates with the limit rod 210 through the groove 211 to guide and limit the movement.

[0033] Reference Figure 3 The outer surface of the lead screw 202 is threaded with a second lead block 212. Two fixing blocks 213 are symmetrically fixed to one side of the base plate 208 and the second lead block 212. A rotating plate 214 is rotatably connected between every two adjacent fixing blocks 213. The linear movement of the second lead block 212 will drive the rotating plate 214 to rotate. Under the pushing action of the rotating plate 214, the base plate 208 will slowly tilt to adjust the angle of the workpiece, which can drive the clamped and fixed workpiece to adjust the angle.

[0034] Working principle: First, the workpiece is placed in the middle of the base 301. When it is necessary to clamp and position the workpiece, the first motor 304 is started. The output end of the first motor 304 drives the bidirectional threaded rod 303 to rotate. When the bidirectional threaded rod 303 rotates, the two first thread blocks 307 will move in opposite directions along the bidirectional threaded rod 303. During the movement of the first thread blocks 307, the slider 306 slides along the guide rail 305, which can ensure that the fixed frame 308 moves smoothly with the first thread blocks 307. When the fixed frame 308 moves, the rotation connection of the first turntable 309 and the second turntable 310 drives the clamping block 311 to move, so that the clamping block 311 can better adapt to the shape contour of the workpiece. Multiple clamping blocks 311 approach from different directions, thereby achieving the purpose of clamping and fixing workpieces of different sizes and types.

[0035] When the angle of the workpiece needs to be adjusted, the second motor 205 is started. The output end of the second motor 205 drives the sprocket 203 fixedly connected to it to rotate. When one sprocket 203 rotates, the chain 204 will synchronously drive the other sprocket 203 to rotate, which in turn drives the lead screw 202 to rotate. The second lead block 212 will move linearly along the lead screw 202. The limiting frame 209 cooperates with the limiting rod 210 through the sliding groove 211. The limiting rod 210 plays a guiding and limiting role. The linear movement of the second lead block 212 will drive the rotating plate 214 to rotate. Under the pushing action of the rotating plate 214, the base plate 208 will slowly tilt to adjust the angle of the workpiece, thereby achieving the purpose of adjusting the angle of the clamped and fixed workpiece.

[0036] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A positioning tool for five-axis machining center comprising a table (1), characterized in that: The top surface of the table top (1) is provided with clamping devices (3); The clamping device (3) comprises a base (301), a plurality of through grooves (302) are formed in the top surface of the base (301) and are distributed at equal intervals, a bidirectional threaded rod (303) is rotatably connected between the middle through grooves (302), a first motor (304) is fixedly connected to one side of the base (301), the output end of the first motor (304) extends into the through groove (302) and is fixedly connected with the bidirectional threaded rod (303), two first silk blocks (307) are threadedly connected to the outer surface of the bidirectional threaded rod (303), a fixed frame (308) is symmetrically arranged on one side of the top surface of the base (301), a plurality of clamping blocks (311) are symmetrically arranged on one side of the fixed frame (308), and an adjusting device (2) is fixedly connected between the bottom surface of the base (301) and the top surface of the table top (1).

2. The positioning tooling for a five-axis machining center of claim 1, wherein: The adjusting device (2) comprises symmetrically arranged connecting frames (201), a lead screw (202) movably penetrates one side of the connecting frame (201), one end of the lead screw (202) is rotatably connected with the inner wall of one side of the connecting frame (201), a sprocket (203) is fixedly connected to the other end of the lead screw (202), a chain (204) is engagedly connected between the sprockets (203), a second motor (205) is fixedly connected to the top surface of the table top (1), the output end of the second motor (205) is fixedly connected with one of the sprockets (203), a bottom plate (208) is arranged above the table top (1), a limiting frame (209) is fixedly connected to one side of the bottom plate (208), a limiting rod (210) is fixedly connected to the upper end of the table top (1), a sliding groove (211) is formed in one side of the limiting frame (209), a second silk block (212) is threadedly connected to the outer surface of the lead screw (202), two fixed blocks (213) are fixedly connected to one side of the second silk block (212) and symmetrically arranged on one side of the bottom plate (208), and a rotating plate (214) is rotatably connected between every two adjacent fixed blocks (213).

3. The positioning tooling for a five-axis machining center of claim 1, wherein: The through grooves (302) on both sides are fixedly connected with guide rails (305), and the upper ends of the guide rails (305) are symmetrically and slidably connected with sliding blocks (306).

4. The positioning tooling for a five-axis machining center of claim 3, wherein: The sliding blocks (306) and the top surfaces of the first silk blocks (307) on the same side are fixedly connected with the fixed frame (308).

5. The positioning tooling for a five-axis machining center of claim 1, wherein: The top surface of the fixed frame (308) is symmetrically rotatably connected with a first rotating disc (309), the top surface of the first rotating disc (309) is symmetrically rotatably connected with a second rotating disc (310), and the top surface of the second rotating disc (310) is rotatably connected with the two clamping blocks (311).

6. The positioning tooling for a five-axis machining center of claim 1, wherein: The two first silk blocks (307) are threadedly connected to opposite threads on the outer surface of the bidirectional threaded rod (303).

7. The positioning tooling for a five-axis machining center of claim 2, wherein: The first connecting plate (206) is symmetrically and fixedly connected with the side of the table board (1) away from the chain (204), the upper end of the first connecting plate (206) is hingedly connected with the second connecting plate (207), and the top surface of the second connecting plate (207) is fixedly connected with the bottom plate (208).

8. The positioning tooling for a five-axis machining center of claim 2, wherein: The outer surface of the limiting rod (210) is attached to the inner wall of the sliding groove (211).

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