Auxiliary positioning fixture for milling

Abstract

The utility model relates to milling technology field discloses a kind of auxiliary positioning fixtures for milling, including clamping box, the inner wall middle part of clamping box is equipped with sliding slot, the inner wall left and right sides of clamping box are slidably connected with moving block, the far side of multiple moving blocks is equipped with multiple air slots, the inner wall of air slot is fixedly connected with pneumatic rod one, the bottom of moving block is fixedly connected with sliding block, the top of moving block is fixedly connected with fixed block, the inner wall adjacent side of multiple fixed blocks is fixedly connected buffer spring, the inner wall middle part of fixed block is fixedly connected with sliding cylinder. In the utility model, drive pneumatic rod one elongation, promote moving block to be close to workpiece, so that clamping plate is contacted with workpiece, and slide in direction of far from reaction force, stretch buffer spring, avoid greater force to make workpiece damaged, stop pneumatic rod one makes workpiece be in stable, reached the purpose of reducing workpiece clamping damaged.

Description

Technical Field

[0001] This utility model relates to the field of milling technology, and in particular to an auxiliary positioning fixture for milling. Background Technology

[0002] Milling is a common metal cutting process that uses a rotating multi-edged cutting tool to cut a workpiece. The relative movement between the milling cutter and the workpiece allows the cutting edge of the milling cutter to gradually remove excess material from the workpiece surface, thereby obtaining a workpiece with the required shape, size, and surface quality. Due to its own characteristics and advantages, milling plays an extremely important role in modern manufacturing and is one of the key processes for achieving high-quality, high-precision, and high-efficiency metal processing.

[0003] In milling processes, auxiliary positioning fixtures are often used to ensure accurate workpiece positioning and improve clamping stability. Most existing auxiliary positioning fixtures adopt rigid jaw structures, which can effectively improve clamping stability. However, due to their rigid structure, the instantaneous force exerted on the workpiece when the jaws contact it during clamping is relatively large, which can easily damage the outer surface of the workpiece, thereby reducing the utilization rate of the workpiece and limiting the application scenarios of auxiliary positioning fixtures. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an auxiliary positioning fixture for milling, which aims to improve the problem of workpiece damage due to clamping in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an auxiliary positioning fixture for milling, comprising a clamping box, wherein a sliding groove is provided in the middle of the inner wall of the clamping box, and movable blocks are slidably connected to the left and right sides of the inner wall of the clamping box, and multiple slots are provided on the opposite sides of the multiple movable blocks, a pneumatic rod is fixedly connected to the inner wall of the slot, a slider is fixedly connected to the bottom of the movable block, a fixed block is fixedly connected to the top of the movable block, buffer springs are fixedly connected to adjacent sides of the inner walls of the multiple fixed blocks, a sliding cylinder is fixedly connected to the middle of the inner wall of the fixed block, a sliding rod is slidably connected to the inner wall of the sliding cylinder, a limit ring is fixedly connected to adjacent ends of the multiple sliding rods, a clamping plate is fixedly connected to the opposite ends of the multiple sliding rods, the bottom of the clamping plate is slidably connected to the top of the movable block, and an auxiliary mechanism is slidably connected to the bottom of the clamping box, the auxiliary mechanism being used to assist in the positioning of the clamping box.

[0006] As a further description of the above technical solution: The auxiliary mechanism includes multiple positioning boxes. The bottom of the inner walls of the multiple positioning boxes are slidably connected to the bottom of the clamping box. A pneumatic rod II is fixedly connected to the rear side of the inner wall of the positioning box. A connecting plate I is fixedly connected to the front end of the pneumatic rod II. Multiple rotating plates are rotatably connected to the front side of the connecting plate I. A central shaft is rotatably connected to the adjacent side of the multiple rotating plates. A rotating shaft I is rotatably connected to the outer wall of the right rotating plate. The outer wall of the rotating shaft I is rotatably connected to the left side of the inner wall of the positioning box. A rotating shaft II is rotatably connected to the outer wall of the left rotating plate. The outer wall of the rotating shaft II is rotatably connected to the outer wall of the clamping box. Multiple connecting plates II are fixedly connected to the bottom of the positioning box. A support base is slidably connected to the outer wall of the connecting plate II. An installation groove is opened on the top of the support base. A double-acting cylinder is fixedly connected to the inner wall of the installation groove.

[0007] As a further description of the above technical solution: Each of the multiple support bases has a fixed rod fixedly connected to its bottom, and a perforated plate is fixedly connected to the outer wall of the fixed rod.

[0008] As a further description of the above technical solution: Each of the fixing rods has a base fixedly connected to its bottom, and the top of the base is fixedly connected to the bottom of the sprue plate.

[0009] As a further description of the above technical solution: A narrow conveyor belt is rotatably connected to the opposite side of each of the multiple bases, and a wide conveyor belt is rotatably connected to the adjacent side of each of the multiple bases.

[0010] As a further description of the above technical solution: A milling seat is slidably connected to the outer wall of the sluice plate, and a crossbeam is fixedly connected to the inner wall of the milling seat.

[0011] As a further description of the above technical solution: A curved ladder is fixedly connected to the right side of the outer wall of the milling base, and a straight ladder is fixedly connected to the outer wall of the milling base near the edge.

[0012] As a further description of the above technical solution: A protective railing is fixedly connected to the left side of the outer wall of the milling base, and a slidable belt is slidably connected to the left side of the bottom of the milling base.

[0013] This utility model has the following beneficial effects: 1. In this utility model, by driving the pneumatic rods on the left and right sides of the clamping box to extend, the slider at the bottom of the moving block slides in the groove, pushing the two sets of moving blocks to slide closer together, thus quickly approaching the workpiece. This causes the clamping plates on the moving blocks to contact the left and right sides of the workpiece and slide away due to the reaction force of the workpiece, which in turn stretches the buffer spring. This avoids damage to the workpiece due to excessive force during clamping. By stopping the pneumatic rods, the workpiece is in a stable clamping state, which facilitates subsequent milling. This achieves the goal of reducing workpiece damage due to clamping when clamping workpieces of different sizes, improving the utilization rate of the workpiece, and broadening the application scenarios of the auxiliary positioning fixture.

[0014] 2. In this utility model, auxiliary positioning can be achieved through an auxiliary mechanism. When the direction parallel to the clamping box is not aligned, the second pneumatic rod is activated, and its extension causes the first connecting plate to move, thereby causing the two sets of rotating plates to rotate and their angles to become parallel. This pushes the clamping box outward from the positioning box, adjusting it to a more distant position. When the direction perpendicular to the clamping box is not aligned, a double-acting cylinder is driven, and one end of the double-acting cylinder extends to push the second connecting plate in the corresponding direction, thereby pushing the positioning box in the corresponding direction and adjusting the position of the workpiece. This achieves the purpose of auxiliary positioning and increases practicality. Attached Figure Description

[0015] Figure 1 This is a front perspective view of an auxiliary positioning fixture for milling proposed in this utility model; Figure 2 This is a partial structural exploded view of the clamping box of an auxiliary positioning fixture for milling proposed in this utility model; Figure 3 This is a partial structural diagram of the moving block of an auxiliary positioning fixture for milling proposed in this utility model; Figure 4 This is a partial structural diagram of the clamping plate of an auxiliary positioning fixture for milling proposed in this utility model; Figure 5 This is a partial structural diagram of the positioning box of an auxiliary positioning fixture for milling proposed in this utility model; Figure 6 This is a partial structural diagram of the support base of an auxiliary positioning fixture for milling proposed in this utility model.

[0016] Legend: 1. Clamping box; 2. Auxiliary mechanism; 201. Positioning box; 202. Pneumatic rod two; 203. Connecting plate one; 204. Rotating plate; 205. Central shaft; 206. Rotating shaft one; 207. Rotating shaft two; 208. Support base; 209. Double-acting cylinder; 210. Mounting slot; 211. Connecting plate two; 3. Slide groove; 4. Moving block; 5. Fixed block; 6. Clamping plate; 7. Empty slot; 8. Pneumatic rod one; 9. Buffer spring; 10. Slide cylinder; 11. Limiting ring; 12. Slide rod; 13. Milling seat; 14. Crossbeam; 15. Straight ladder; 16. Guardrail; 17. Narrow conveyor belt; 18. Base; 19. Wide conveyor belt; 20. Spindle plate; 21. Fixed rod; 22. Curved ladder; 23. Slider; 24. Belt laying. Detailed Implementation

[0017] 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.

[0018] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 4 An embodiment of this utility model provides an auxiliary positioning fixture for milling, comprising a clamping box 1, a sliding groove 3 in the middle of the inner wall of the clamping box 1, movable blocks 4 slidably connected to the left and right sides of the inner wall of the clamping box 1, multiple slots 7 in the opposite sides of the multiple movable blocks 4, a pneumatic rod 8 fixedly connected to the inner wall of the slot 7, a slider 23 fixedly connected to the bottom of the movable block 4, a fixed block 5 fixedly connected to the top of the movable block 4, buffer springs 9 fixedly connected to adjacent sides of the inner walls of the multiple fixed blocks 5, a sliding cylinder 10 fixedly connected to the middle of the inner wall of the fixed block 5, a sliding rod 12 slidably connected to the inner wall of the sliding cylinder 10, a limit ring 11 fixedly connected to adjacent ends of the multiple sliding rods 12, a clamping plate 6 fixedly connected to the opposite ends of the multiple sliding rods 12, the bottom of the clamping plate 6 slidably connected to the top of the movable block 4, and an auxiliary mechanism 2 slidably connected to the bottom of the clamping box 1 for assisting in the positioning of the clamping box 1. Specifically, a sliding groove 3 is carefully cut into the middle of the inner wall of the clamping box 1 for sliding connection. The left and right sides of the inner wall of the clamping box 1 are slidably connected to the moving blocks 4 to ensure that the moving blocks 4 can move flexibly inside the clamping box 1. Multiple slots 7 are cut into the sides of the moving blocks 4 that are far apart from each other. The inner wall of these slots 7 is fixedly connected to a pneumatic rod 8 for driving. A slider 23 is firmly fixedly connected to the bottom of the moving blocks 4. The slider 23 can slide smoothly inside the inner wall of the sliding groove 3. The fixed blocks 5 are fixedly connected to a pneumatic rod 8 for driving on the adjacent side of their inner walls. A buffer spring 9 is used to ensure that the impact can be effectively reduced during movement. A slide cylinder 10 is fixedly connected to the middle of the inner wall of the fixed block 5. The inner wall of the slide cylinder 10 is in a sliding connection with the slide rod 12 so that the slide rod 12 can slide freely inside the slide cylinder 10. A limiting ring 11 is fixedly connected to each adjacent end of the slide rod 12 to limit the movement range of the slide rod 12. A clamping plate 6 is fixedly connected to each far end of the slide rod 12. The bottom of the clamping plate 6 is in a sliding connection with the top of the moving block 4 to ensure that the clamping plate 6 can be flexibly adjusted in position.

[0019] Please see the appendix Figure 2 Appendix Figure 5 and attached Figure 6 The auxiliary mechanism 2 includes multiple positioning boxes 201. The bottom of the inner wall of each positioning box 201 is slidably connected to the bottom of the clamping box 1. A pneumatic rod 202 is fixedly connected to the rear side of the inner wall of the positioning box 201. A connecting plate 203 is fixedly connected to the front end of the pneumatic rod 202. Multiple rotating plates 204 are rotatably connected to the front side of the connecting plate 203. A central shaft 205 is rotatably connected to each adjacent side of the multiple rotating plates 204. A rotating shaft 205 is rotatably connected to the outer wall of the right rotating plate 204. 06. The outer wall of the rotating shaft 206 is rotatably connected to the left side of the inner wall of the positioning box 201. The outer wall of the left rotating plate 204 is rotatably connected to the rotating shaft 207. The outer wall of the rotating shaft 207 is rotatably connected to the outer wall of the clamping box 1. Multiple connecting plates 211 are fixedly connected to the bottom of the positioning box 201. The outer wall of the connecting plate 211 is slidably connected to the support seat 208. The top of the support seat 208 is provided with an installation groove 210. The inner wall of the installation groove 210 is fixedly connected to a double-acting cylinder 209. Specifically, the bottom of the inner wall of the positioning box 201 forms a smooth and stable sliding connection with the bottom of the clamping box 1, ensuring smooth relative movement between the two. The front end of the pneumatic rod 202 is firmly fixed to the connecting plate 203, forming a stable transmission structure. The front edge of the connecting plate 203 forms a flexible rotational connection with multiple rotating plates 204, allowing the rotating plates 204 to rotate freely within a certain angle range. The adjacent sides of the multiple rotating plates 204 are connected to the central shaft 205 through a precise rotational connection device. The rotating plate 204 is connected to the rotating shaft 206 to ensure that the rotating plate 204 remains synchronized and coordinated during rotation. The outer wall of the right rotating plate 204 is reliably connected to the rotating shaft 206. The outer wall of the rotating shaft 206 is connected to the left side of the inner wall of the positioning box 201 through a rotating connection device, so that the entire structure remains balanced and stable during rotation. The outer wall of the left rotating plate 204 is also rotatably connected to the rotating shaft 207. The outer wall of the rotating shaft 207 is connected to the outer wall of the clamping box 1 through a rotating connection device, which further enhances the stability and flexibility of the entire device.

[0020] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 A fixing rod 21 is fixedly connected to the bottom of each of the multiple support bases 208. A slotted plate 20 is fixedly connected to the outer wall of the fixing rod 21. A base 18 is fixedly connected to the bottom of each of the multiple fixing rods 21. The top of the base 18 is fixedly connected to the bottom of the slotted plate 20. A narrow conveyor belt 17 is rotatably connected to the opposite side of each of the multiple bases 18. A wide conveyor belt 19 is rotatably connected to the adjacent side of each of the multiple bases 18. Specifically, the support base 208 has a fixed rod 21 securely connected to its bottom via a robust connection. The outer wall of the fixed rod 21 is reliably connected to the perforated plate 20. Furthermore, the bottoms of the multiple fixed rods 21 are also securely connected to the base 18 via a stable connection. The top of the base 18 and the bottom of the perforated plate 20 are precisely connected to ensure a tight fit. In addition, the multiple bases 18 are connected to a narrow conveyor belt 17 on their opposite sides via a rotatable connection, ensuring coordinated operation between components and stability of the overall structure.

[0021] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 A milling seat 13 is slidably connected to the outer wall of the milling plate 20. A crossbeam 14 is fixedly connected to the inner wall of the milling seat 13. A curved ladder 22 is fixedly connected to the right side of the outer wall of the milling seat 13. A straight ladder 15 is fixedly connected to the outer wall of the milling seat 13 near the edge. A guardrail 16 is fixedly connected to the left side of the outer wall of the milling seat 13. A slidable belt 24 is slidably connected to the bottom left side of the milling seat 13. Specifically, the outer wall of the milling plate 20 shown in the figure is connected to the milling seat 13 by a sliding connection, while the inner wall of the milling seat 13 is tightly connected to the crossbeam 14 by a fixed connection. In addition, a curved ladder 22 is fixedly connected to the right side of the outer wall of the milling seat 13, and a straight ladder 15 is fixedly connected to the outer wall of the milling seat 13 near the edge. Furthermore, a guardrail 16 is fixedly connected to the left side of the outer wall of the milling seat 13 to ensure operational safety. In particular, the bottom left side of the milling seat 13 is connected to the laying belt 24 by a sliding connection to enhance the stability and flexibility of the overall structure.

[0022] Working principle: When a workpiece needs to be clamped for milling, the workpiece is first placed in the middle of the clamping box 1. The pneumatic rods 8 on the left and right sides of the clamping box 1 are extended, causing the slider 23 at the bottom of the moving block 4 to slide in the slide groove 3. This pushes the two sets of moving blocks 4 to slide closer to the workpiece, so that the clamping plate 6 on the moving block 4 contacts the left and right sides of the workpiece and slides away from it due to the reaction force of the workpiece. This causes the buffer spring 9 to stretch, thus avoiding damage to the workpiece due to excessive force during clamping. By stopping the pneumatic rods 8, the workpiece is in a stable clamping state, which facilitates subsequent milling. During milling, the output port of the milling seat 13 may not be aligned with the workpiece in the clamping box 1, resulting in machining failure. In this case, the auxiliary mechanism 2 can be used to assist in positioning. When the alignment is not aligned in the direction parallel to the clamping box 1, the pneumatic rod 202 is activated. The extension of the pneumatic rod 202 drives the displacement of the connecting plate 203, thereby causing the two sets of rotating plates 204 to rotate and make their angles tend to be parallel. This pushes the clamping box 1 outward from the positioning box 201 and adjusts it to a more distant position. When the alignment is not aligned in the direction perpendicular to the clamping box 1, the double-acting cylinder 209 is driven. One end of the double-acting cylinder 209 is controlled to extend and push the connecting plate 211 in the corresponding direction, thereby pushing the positioning box 201 in the corresponding direction and adjusting the position of the workpiece.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An auxiliary positioning fixture for milling, comprising a clamping box (1), characterized in that: The clamping box (1) has a sliding groove (3) in the middle of its inner wall. The clamping box (1) has a sliding block (4) on each of its left and right sides. Multiple slots (7) are provided on the opposite sides of the multiple sliding blocks (4). A pneumatic rod (8) is fixedly connected to the inner wall of the slot (7). A slider (23) is fixedly connected to the bottom of the sliding block (4). A fixed block (5) is fixedly connected to the top of the sliding block (4). Buffer springs (9) are fixedly connected to adjacent sides of the inner walls of the multiple fixed blocks (5). A slide cylinder (10) is fixedly connected to the middle of the inner wall of the fixed block (5). A slide rod (12) is slidably connected to the inner wall of the slide cylinder (10). A limit ring (11) is fixedly connected to one adjacent end of a plurality of slide rods (12). A clamping plate (6) is fixedly connected to one far end of a plurality of slide rods (12). The bottom of the clamping plate (6) is slidably connected to the top of the moving block (4). An auxiliary mechanism (2) is slidably connected to the bottom of the clamping box (1). The auxiliary mechanism (2) is used to assist in the positioning of the clamping box (1).

2. The auxiliary positioning fixture for milling according to claim 1, characterized in that: The auxiliary mechanism (2) includes multiple positioning boxes (201). The bottom of the inner wall of each positioning box (201) is slidably connected to the bottom of the clamping box (1). A pneumatic rod (202) is fixedly connected to the rear side of the inner wall of each positioning box (201). A connecting plate (203) is fixedly connected to the front end of the pneumatic rod (202). Multiple rotating plates (204) are rotatably connected to the front side of the connecting plate (203). A central shaft (205) is rotatably connected to each adjacent side of the multiple rotating plates (204). A rotating shaft (206) is rotatably connected to the outer wall of the right rotating plate (204). The outer wall of the first rotating shaft (206) is rotatably connected to the left side of the inner wall of the positioning box (201). The outer wall of the left rotating plate (204) is rotatably connected to the second rotating shaft (207). The outer wall of the second rotating shaft (207) is rotatably connected to the outer wall of the clamping box (1). The bottom of the positioning box (201) is fixedly connected to multiple second connecting plates (211). The outer wall of the second connecting plate (211) is slidably connected to the support seat (208). The top of the support seat (208) is provided with an installation groove (210). The inner wall of the installation groove (210) is fixedly connected to a double-acting cylinder (209).

3. The auxiliary positioning fixture for milling according to claim 2, characterized in that: Each of the multiple support bases (208) has a fixed rod (21) fixedly connected to its bottom, and a perforated plate (20) is fixedly connected to the outer wall of the fixed rod (21).

4. The auxiliary positioning fixture for milling according to claim 3, characterized in that: Each of the fixed rods (21) has a base (18) fixedly connected to its bottom, and the top of the base (18) is fixedly connected to the bottom of the sprue plate (20).

5. The auxiliary positioning fixture for milling according to claim 4, characterized in that: Narrow conveyor belts (17) are rotatably connected to the opposite sides of the plurality of bases (18), and wide conveyor belts (19) are rotatably connected to the adjacent sides of the plurality of bases (18).

6. The auxiliary positioning fixture for milling according to claim 3, characterized in that: The outer wall of the sluice plate (20) is slidably connected to a milling seat (13), and the inner wall of the milling seat (13) is fixedly connected to a crossbeam (14).

7. The auxiliary positioning fixture for milling according to claim 6, characterized in that: A curved ladder (22) is fixedly connected to the right side of the outer wall of the milling seat (13), and a straight ladder (15) is fixedly connected to the outer wall of the milling seat (13) near the edge.

8. The auxiliary positioning fixture for milling according to claim 6, characterized in that: A guardrail (16) is fixedly connected to the left side of the outer wall of the milling seat (13), and a sliding belt (24) is slidably connected to the left side of the bottom of the milling seat (13).

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