A positioning fixture for metal cutting

Abstract

The present application relates to the field of positioning tool for cutting processing, in particular to a positioning tool for metal cutting processing, which comprises a positioning tool shell, a falling groove is formed in the upper end surface of the positioning tool shell, a waste chip groove, a filtering groove and a cutting fluid groove are formed in the inside of the positioning tool shell, the waste chip groove is above the filtering groove, the filtering groove is above the cutting fluid groove, a recycling unit is installed at one end of the positioning tool shell, a cutting unit is installed at the other end of the positioning tool shell, a positioning unit is installed on the upper end surface of the positioning tool shell, the metal is positioned through the positioning unit, then the metal is cut through the cutting unit, the waste chip and the cutting fluid generated after cutting are from the falling groove to the waste chip groove, then the cutting fluid is filtered through the recycling unit, the cutting fluid enters the cutting fluid groove from the filtering groove and falls into the inside of the recycling unit.

Description

Technical Field

[0001] This invention relates to the field of positioning fixtures for cutting processes, specifically a positioning fixture for metal cutting processes. Background Technology

[0002] In metal cutting, the metal is usually secured or released by manually rotating screws. Each cutting operation requires two manual screw rotations: one to secure the metal and one to release it, which is quite cumbersome. Furthermore, some cutting positioning fixtures cannot collect or recycle the chips and cutting fluid after cutting, making the cutting positioning fixture table messy and wasting cutting fluid.

[0003] Existing technologies have also developed some positioning fixtures that can automatically clamp and position workpieces. However, most of these positioning fixtures are only suitable for clamping certain specific workpieces. When the workpiece size changes, the clamping position cannot be adjusted. On the other hand, using movable clamping methods requires manual fixing or disassembly of the fixtures one by one, which is very inconvenient during operation.

[0004] In view of this, in order to improve the convenience for workers in the process of clamping irregularly shaped workpieces, the inventors designed a positioning fixture for metal cutting. Summary of the Invention

[0005] To address the problems in the prior art, this invention provides a positioning fixture for metal cutting, which solves the problem of inconvenience for workers when clamping irregularly shaped workpieces.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] This invention proposes a positioning fixture for metal cutting, comprising a positioning unit, wherein the positioning unit includes positioning mechanisms, two positioning mechanisms are mounted on the upper end face of the positioning fixture housing, a pulling mechanism is mounted on one side of the two positioning mechanisms, and a fixing plate mechanism is mounted on the other side of the two positioning mechanisms.

[0008] The positioning mechanism includes a rectangular plate fixed to the upper surface of the positioning fixture housing. A first pull rope groove is formed inside the rectangular plate. A pressing rod is fixed to one side of the rectangular plate. A retraction spring rod groove is formed inside the pressing rod. A circular slot is formed at one end of the pressing rod, and the retraction spring rod groove communicates with the circular slot. One end of the retraction spring rod passes through the circular slot at one end of the retraction spring rod groove and connects to the fixing plate mechanism. A retraction spring, which is a tension spring, is fitted onto the outer wall of the retraction spring rod. A second tension groove is formed inside the retraction spring rod, and the retraction spring is located inside the retraction groove. A retraction groove is formed inside the positioning mechanism housing, and one end of the positioning mechanism housing is connected to the fixing plate mechanism. The fixing plate mechanism is used to clamp the workpiece. The pulling mechanism works in conjunction with the retraction spring to achieve the forward and backward movement of the fixing plate mechanism. This invention uses a pulling mechanism to pull apart the two fixing plate mechanisms, then places the workpiece between the two fixing plate mechanisms, and then the pulling mechanism pushes the two fixing plate mechanisms to clamp the workpiece.

[0009] In a preferred embodiment of the present invention, the fixing plate mechanism includes fixing plates, two fixing plates are fixedly connected to one end of a retraction spring rod, two fixing plates are fixedly connected to one end of a positioning mechanism housing, a telescopic plate is fixedly connected between the two fixing plates, and an L-shaped rod is fixed to one side of each of the two fixing plates.

[0010] In a preferred embodiment of the present invention, the pulling mechanism includes a servo motor, which is bolted to the side wall of the positioning fixture housing. A first winding wheel and a second winding wheel are fixed to the drive end of the servo motor. The first winding wheel is positioned above the second winding wheel. The inner wall of the first winding wheel is fixedly connected to one end of a first pulling rope. The other end of the first pulling rope passes through a first pulling rope groove and a second tension groove and is fixedly connected to a fixing plate on the side of the positioning fixture housing where the servo motor is fixed. A pressure sensor is installed on one side of the fixing plate. The servo motor can precisely control the rotation angle, and the pressure sensor is used to detect the pressure between the fixing plate and the workpiece. The servo motor, in conjunction with the pressure sensor, can provide different clamping forces according to the rigidity of different workpieces, avoiding excessive clamping force that could damage the workpiece, or insufficient clamping force that would prevent workpiece fixation.

[0011] In a preferred embodiment of the present invention, brackets are fixed at two included angles on one side of the upper end face of the positioning fixture housing, and two limiting components are respectively installed on the side walls of the two brackets. Limiting components are installed on the rectangular plate opposite to the side where the servo motor is fixed on the positioning fixture housing. All five limiting components are at the same horizontal height. The inner wall of the second reel is fixedly connected to one end of the second pull rope. The other end of the second pull rope passes through the five limiting components, the first pull rope groove, and the second tension groove, and is fixedly connected to the fixing plate opposite to the side where the servo motor is fixed on the positioning fixture housing.

[0012] In a preferred embodiment of the present invention, the limiting component includes a C-shaped housing, the C-shaped housings on the side walls of the two supports are respectively fixedly connected to the side walls of the supports, the C-shaped housing on the rectangular plate is fixedly connected to one side of the rectangular plate, a roller is rotatably connected inside the C-shaped housing, and one end of the second pull rope passes through the interior of the five C-shaped housings and slides along the outer wall of the roller.

[0013] In a preferred embodiment of the present invention, a drop groove is provided on the upper end face of the positioning fixture housing, and a waste chip trough, a filter trough, and a cutting fluid trough are provided inside the positioning fixture housing. The waste chip trough is located above the filter trough, and the filter trough is located above the cutting fluid trough. A recycling unit is installed at one end of the positioning fixture housing, and a cutting unit is installed at the other end of the positioning fixture housing. A positioning unit is installed on the upper end face of the positioning fixture housing. The metal is positioned by the positioning unit, and then the metal is cut by the cutting unit. The waste chips and cutting fluid generated after cutting fall from the drop groove to the waste chip trough, and then the cutting fluid is filtered by the recycling unit. The cutting fluid enters the cutting fluid trough from the filter trough and falls into the interior of the recycling unit.

[0014] In a preferred embodiment of the present invention, the recycling unit includes a filter plate placed inside the waste bin. The filter plate has uniformly sized filter holes inside, which are located at the same vertical height as the filter bin and are connected to each other. A slot is provided below one end of the filter plate, and a limit block is fixed above one end of the filter plate.

[0015] In a preferred embodiment of the present invention, a cutting fluid tank is placed inside the cutting fluid tank, and a second slot is provided above one end of the cutting fluid tank. A connecting plate is inserted between the second slot and the first slot.

[0016] In a preferred embodiment of the present invention, the sidewall of the drop trough is wedge-shaped to facilitate the sliding of some waste chips and cutting fluid along the wedge-shaped surface.

[0017] The beneficial effects of this invention are:

[0018] (1) The positioning fixture for metal cutting processing described in this invention has a positioning mechanism, a pulling mechanism and a fixing plate mechanism designed on the outer shell of the positioning fixture. The pulling mechanism is pulled or released by the forward and reverse rotation of the servo motor, thereby controlling the contraction or release of the positioning mechanism to fix or release the metal by the fixing plate mechanism. This process realizes the fast and automatic fixing or release of the metal, and improves the convenience of metal clamping.

[0019] (2) The positioning fixture for metal cutting processing described in this invention has a drop groove, a filter groove, a filter hole and a cutting fluid tank inside the outer shell of the positioning fixture. The drop groove, filter groove, filter hole and cutting fluid tank are connected to each other. During the cutting process, the waste chips and cutting fluid generated fall from the drop groove onto the filter plate. The waste chips remain on the filter plate, and the cutting fluid flows from the filter hole and filter groove into the cutting fluid tank, so as to realize the recycling of waste chips and cutting fluid, so as to adapt to the improved positioning fixture. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 A three-dimensional view of the overall structure provided for this invention;

[0022] Figure 2 A second perspective view of the overall structure provided for this invention;

[0023] Figure 3 A partial sectional view of the overall structure provided for this invention;

[0024] Figure 4 for Figure 3 Enlarged view of region a in the middle;

[0025] Figure 5 for Figure 3 A magnified view of region b in the middle.

[0026] In the diagram: 1. Positioning fixture housing; 11. Drop trough; 12. Waste chip trough; 13. Filter tank; 14. Cutting fluid tank; 2. Recovery unit; 21. Filter plate; 211. Filter hole; 212. Slot 1; 213. Limiting block; 22. Cutting fluid tank; 221. Slot 2; 23. Linkage plate; 3. Positioning unit; 31. Positioning mechanism; 311. Positioning mechanism housing; 312. Shrinkage groove; 313. Shrinkage spring rod; 314. Shrinkage spring; 315. Second stretching groove; 316. Extrusion... 317. Pressure bar, 318. Retraction spring bar groove, 319. Circular groove, 319. Fixing plate, 3191. First pull rope groove, 32. Fixing plate mechanism, 321. Fixing plate, 322. Telescopic plate, 323. L-shaped rod, 33. Pulling mechanism, 331. Second pull rope, 332. Limiting assembly, 3321. C-shaped housing, 3322. Roller, 333. Bracket, 334. First pull rope, 35. Servo motor, 36. First winding wheel, 37. Second winding wheel, 4. Cutting unit, 5. Pressure sensor. Detailed Implementation

[0027] The technical solution of the present invention will be explained in detail below with reference to specific embodiments, so that those skilled in the art can reproduce the invention based on these specific embodiments.

[0028] The overall concept of this invention is as follows: A positioning mechanism 31, a pulling mechanism 33, and a fixing plate mechanism 32 are designed on the outer shell 1 of the positioning fixture. When the fixture opens, the controller controls the servo motor 35 to rotate forward and drive the pulling mechanism 33. The pulling mechanism 33 pulls the fixing plate mechanism 32, and the fixing plate mechanism 32 then pulls the positioning mechanisms 31 on both sides. The positioning mechanism 31 is compressed by the tension and contracts. Its internal contraction spring 314 deforms and generates elastic force. When the positioning mechanism 31 contracts, it pulls the fixing plate mechanism 32 until the distance between the two fixing plate mechanisms 32 is sufficient to place the metal.

[0029] When clamping, the controller controls the start servo motor 35 to reverse, and the pulling mechanism 33 no longer pulls the positioning mechanism 31. The fixing plate mechanism 32 is pushed to both sides of the metal by the elastic force of the contraction spring 314 and squeezes the metal, thereby achieving the effect of fixing the metal.

[0030] After the cutting operation is completed, the servo motor 35 is controlled to rotate forward by the controller, causing the pulling mechanism 33 to pull the fixing plate mechanism 32 again. The fixing plate mechanism 32 then pulls the positioning mechanisms 31 on both sides, thereby releasing the metal. Compared with the existing positioning fixtures that use manual screw rotation to fix or release the metal, the positioning unit 3 in this technical solution can quickly and automatically fix or release the metal, improving the efficiency and convenience of metal cutting.

[0031] A drop trough 11, a chip trough 12, a filter trough 13, and a cutting fluid trough 14 are provided inside the housing 1 of the positioning fixture. A filter plate 21 is placed in the chip trough 12, and a cutting fluid tank 22 is placed in the cutting fluid trough 14. During the cutting process, the chips and cutting fluid generated fall from the drop trough 11 to the filter plate 21 in the chip trough 12. The filter plate 21 then filters the cutting fluid from the filter trough 13 into the cutting fluid tank 22. After the cutting work is completed, the filter plate 21 and the cutting fluid tank 22 can be extracted from the chip trough 12 and the cutting fluid trough 14, respectively, thereby achieving the cleaning of the cutting positioning fixture and the recycling of the cutting fluid. Compared with the existing cutting positioning fixture, where chips fly everywhere and cutting fluid is lost during cutting, the recycling unit 2 in this technical solution can effectively recycle chips and cutting fluid.

[0032] The specific embodiments of the present invention are as follows:

[0033] like Figures 1-5 As shown, the positioning fixture for metal cutting according to the present invention includes a positioning fixture housing 1. The upper end face of the positioning fixture housing 1 is provided with a drop groove 11. The interior of the positioning fixture housing 1 is provided with a waste chip groove 12, a filter groove 13, and a cutting fluid groove 14. The waste chip groove 12 is located above the filter groove 13, and the filter groove 13 is located above the cutting fluid groove 14. A recovery unit 2 is installed at one end of the positioning fixture housing 1, and a cutting unit 4 is installed at the other end of the positioning fixture housing 1. A positioning unit 3 is installed on the upper end face of the positioning fixture housing 1. The metal is positioned by the positioning unit 3, and then the metal is cut by the cutting unit 4. The waste chips and cutting fluid generated after cutting are discharged from the drop groove 11 to the waste chip groove 12, and then the cutting fluid is recovered by the recovery unit 2. The cutting fluid enters the cutting fluid groove 14 from the filter groove 13 and falls into the interior of the recovery unit 2. The activity state of the recovery unit 2 is limited by the working state of the positioning unit 3.

[0034] The recycling unit 2 includes a filter plate 21, which is placed inside the waste chip trough 12. The filter plate 21 has uniformly sized filter holes 211 inside, which are located in the same vertical direction as the filter trough 13 and are connected to each other. A slot 212 is opened at the bottom of one end of the filter plate 21, and a limit block 213 is fixed above one end of the filter plate 21. A cutting fluid tank 22 is placed inside the cutting fluid tank 14, and a second slot 221 is opened above one end of the cutting fluid tank 22. A connecting plate 23 is inserted between the second slot 221 and the first slot 212. The connecting plate 23 can connect the filter plate 21 and the cutting fluid tank 22 together, which facilitates the synchronous pushing and pulling of the filter plate 21 and the cutting fluid tank 22.

[0035] The positioning unit 3 includes a positioning mechanism 31. Two positioning mechanisms 31 are installed on the upper surface of the positioning fixture housing 1. A pulling mechanism 33 is installed on one side of the two positioning mechanisms 31, and a fixing plate mechanism 32 is installed on the other side of the two positioning mechanisms 31. The positioning mechanism 31 includes a rectangular plate 319, which is fixed to the upper surface of the positioning fixture housing 1.

[0036] The rectangular plate 319 has a pull rope groove 3191 inside. A pressing rod 316 is fixed on one side of the rectangular plate 319. A retraction spring rod groove 317 is opened inside the pressing rod 316. A circular slot 318 is opened at one end of the pressing rod 316. The retraction spring rod groove 317 communicates with the circular slot 318. One end of the retraction spring rod 313 passes through the circular slot 318 opened at one end of the retraction spring rod groove 317 and is connected to the fixing plate mechanism 32.

[0037] The outer wall of the retraction spring rod 313 is fitted with a retraction spring 314. The retraction spring rod 313 has a second tension groove 315 inside. The retraction spring 314 is located inside the retraction groove 312. The positioning mechanism housing 311 has a retraction groove 312 inside. One end of the positioning mechanism housing 311 is connected to the fixing plate mechanism 32.

[0038] The fixing plate mechanism 32 includes fixing plates 321. Two fixing plates 321 are fixedly connected to one end of a retraction spring rod 313. Two fixing plates 321 are fixedly connected to one end of a positioning mechanism housing 311. A telescopic plate 322 is fixedly connected between the two fixing plates 321. An L-shaped rod 323 is fixed to one side of each of the two fixing plates 321. A pressure sensor 5 is installed on one side of each fixing plate 321.

[0039] The pulling mechanism 33 includes a servo motor 35, which is fixed to the side wall of the positioning fixture housing 1 by bolts. The drive end of the servo motor 35 is fixed with a first winding wheel 36 and a second winding wheel 37. The first winding wheel 36 is located above the second winding wheel 37. The inner wall of the first winding wheel 36 is fixedly connected to one end of a first pulling rope 334. The other end of the first pulling rope 334 passes through a first pulling rope groove 3191 and a second tension groove 315 and is fixedly connected to a fixing plate 321 on the side of the positioning fixture housing 1 where the servo motor 35 is fixed.

[0040] The positioning fixture housing 1 has two brackets 333 fixed at the two included corners on one side of the upper end face. Two limiting components 332 are installed on the side walls of the two brackets 333 respectively. The limiting components 332 are installed on the rectangular plate 319 opposite to the side on which the servo motor 35 is fixed on the positioning fixture housing 1. All five limiting components 332 are at the same horizontal height.

[0041] The inner wall of the second reel 37 is fixedly connected to one end of the second pull rope 331. The other end of the second pull rope 331 passes through five limiting components 332, as well as the first pull rope groove 3191 and the second tension groove 315, and is fixedly connected to the fixing plate 321 on the opposite side of the side on which the servo motor 35 is fixed on the positioning fixture housing 1.

[0042] The limiting component 332 includes a C-shaped outer shell 3321. The C-shaped outer shell 3321 on the side wall of the two supports 333 is fixedly connected to the side wall of the supports 333 respectively. The C-shaped outer shell 3321 on the rectangular plate 319 is fixedly connected to one side of the rectangular plate 319. A roller shaft 3322 is rotatably connected inside the C-shaped outer shell 3321. One end of the second pull rope 331 passes through the interior of the five C-shaped outer shells 3321 and slides along the outer wall of the roller shaft 3322.

[0043] The sidewall of the drop trough 11 is wedge-shaped to allow some of the waste chips and cutting fluid to slide down along the wedge-shaped surface.

[0044] In actual operation, the controller first controls the servo motor 35 to rotate forward. The servo motor 35 drives the first winding wheel 36 and the second winding wheel 37 to rotate. The first winding wheel 36 and the second winding wheel 37 respectively wind up the first pull rope 334 and the second pull rope 331. At this time, two actions occur:

[0045] The first action is that the first pull rope 334 retracts and pulls the fixed plate 321 to one side. The fixed plate 321 pushes the positioning mechanism housing 311, the retraction spring rod 313 and the L-shaped rod 323 to one side. The retraction spring rod 313 enters the interior of the retraction spring rod groove 317, so that the compression rod 316 enters the retraction groove 312 and compresses the retraction spring 314. The retraction spring 314 is compressed, and the fixed plate 321 pulls the telescopic plate 322 to extend.

[0046] The second action is that the second pull rope 331 slides and retracts along the roller 3322 and pulls the fixed plate 321 on the opposite side. The fixed plate 321 on the opposite side then pulls and squeezes the positioning mechanism 31 on the opposite side. At the same time, the L-shaped rod 323 on the opposite side moves together, and the positioning mechanism 31 on the opposite side begins to retract until metal can be placed between the two fixed plates 321. The two actions occur simultaneously.

[0047] Then the controller controls the servo motor 35 to stop rotating, placing the metal on the upper surface of the positioning fixture housing 1. At this time, the two L-shaped rods 323 limit the two limit blocks 213, preventing the recycling unit 2 from being pulled out. Then the controller controls the servo motor 35 to reverse, driving the first winding wheel 36 and the second winding wheel 37 to reverse. The first winding wheel 36 and the second winding wheel 37 release the first pull rope 334 and the second pull rope 331 respectively. The fixed plates 321 on both sides are no longer pulled by the first pull rope 334 and the second pull rope 331. Under the elastic force of the contraction spring 314, the contraction spring 314 pushes the fixed plates 321 on both sides to move towards the metal side. The fixed plates 321 move towards the metal side and pull the positioning mechanism housing 311, the contraction spring rod 313, the first pull rope 334 and the second pull rope 331 to move to the same side until the fixed plates 321 on both sides contact the metal.

[0048] At the end of the movement, the contraction spring 314 has not fully returned to its original position and still retains its elastic force. The elastic force of the contraction spring 314 clamps and fixes the metal, achieving the purpose of using the servo motor 35 to drive the positioning mechanism 31. The contraction spring 314 inside the positioning mechanism 31 has a relatively large elastic force, making it convenient to use mechanical transmission to achieve the deformation of the contraction spring 314. When the fixing plates 321 on both sides contact and compress the metal, the pressure sensor 5 contacts the metal. When the compressive force of the fixing plate 321 on the metal reaches the set pressure value, the pressure sensor 5 sends an electrical signal, and the controller controls the servo motor 35 to stop rotating. At this point, the metal can be cut by the cutting unit 4.

[0049] During the cutting process, since the two fixed plates 321 and the two telescopic plates 322 form an annular surround, the metal inside the annular surround is less likely to splash everywhere when cutting, and falls from the drop trough 11 onto the filter plate 21 in the waste chip trough 12. Meanwhile, the cutting fluid generated during cutting falls from the drop trough 11 onto the filter plate 21, and flows from the filter hole 211 and the filter trough 13 into the cutting fluid tank 22 in the cutting fluid tank 14.

[0050] After the cutting work is completed, the controller controls the servo motor 35 to rotate forward. The servo motor 35 drives the pulling mechanism 33 to cause the fixed plate mechanism 32 to squeeze and position the positioning mechanism 31 to retract until the metal can be easily removed. Then, the controller controls the servo motor 35 to stop rotating and remove the metal.

[0051] Then, the controller controls the servo motor 35 to reverse, causing the contraction spring 314 in the positioning mechanism 31 to reset under elastic force and drive the positioning mechanism 31, the fixing plate mechanism 32, and the pulling mechanism 33 to fully reset. After resetting, the fixing plate mechanism 32 drives the L-shaped rod 323 to reset, at which point the L-shaped rod 323 no longer limits the limit block 213. With the connection of the linkage plate 23, either the filter plate 21 or the cutting fluid tank 22 can be pulled to make the filter plate 21 or the cutting fluid tank 22 move synchronously, pulling the filter plate 21 and the cutting fluid tank 22 out from the inside of the waste chip tank 12 and the cutting fluid tank 14 respectively, cleaning up the waste chips, recovering the cutting fluid, and finally reinstalling the filter plate 21 and the cutting fluid tank 22 into the inside of the waste chip tank 12 and the cutting fluid tank 14 respectively for use in the next cutting operation.

[0052] Working principle of recycling unit 2: During the cutting process, the waste chips and cutting fluid generated fall from the drop trough 11 onto the filter plate 21. The waste chips remain on the filter plate 21, and the cutting fluid flows through the filter holes 211 and the filter tank 13 into the cutting fluid tank 22, thereby realizing the recycling of waste chips and cutting fluid. At the same time, through the displacement change of the L-shaped rod 323 and the cooperation of the limiting block 213, the filter plate 21 and the cutting fluid tank 22 cannot be pulled out during the cutting operation. The filter plate 21 and the cutting fluid tank 22 can only be removed after the cutting operation is completed and the fixing plate mechanism 32 is reset.

[0053] The working principle of the positioning unit 3 is as follows: the forward and reverse rotation of the servo motor 35 controls the pulling mechanism 33 to pull or release the fixing plate mechanism 32. When the fixing plate mechanism 32 is pulled, it squeezes and contracts the positioning mechanism 31 and places the metal between the fixing plate mechanisms 32. When the fixing plate mechanism 32 is released by the pulling mechanism 33, the positioning mechanism 31 pushes the fixing plate 321 inside the fixing plate mechanism 32 under the elastic force of the internal contraction spring 314. The metal is clamped and fixed by squeezing the fixing plate 321.

[0054] The working principle, connection relationship, and positional relationship of the technical solution of the present invention have been introduced above. The present invention can be manufactured through the above solution, providing a different solution for positioning and clamping, waste chip collection and cleaning of coolant in machining equipment.

Claims

1. A positioning tool for metal cutting, comprising a positioning unit, the positioning unit comprising positioning mechanisms, two positioning mechanisms are installed on the upper end surface of the positioning tool shell, one side of the two positioning mechanisms is provided with a pulling mechanism, and the other side of the two positioning mechanisms is provided with a fixed plate mechanism; characterized in that: the positioning mechanism comprises a rectangular plate, the rectangular plate is fixed on the upper end surface of the positioning tool shell, a No. 1 pulling rope groove is formed in the inside of the rectangular plate, an extrusion rod is fixed on one side of the rectangular plate, a contraction spring rod groove is formed in the inside of the extrusion rod, a circular slot is formed at one end of the extrusion rod, the contraction spring rod groove is communicated with the circular slot, one end of the contraction spring rod is pulled out from the circular slot at one end of the contraction spring rod groove and connected with the fixed plate mechanism, a contraction spring is sleeved on the outer wall of the contraction spring rod, a No. 2 stretching groove is formed in the inside of the contraction spring rod, the contraction spring is located in the contraction groove, a contraction groove is formed in the inside of the positioning mechanism shell, one end of the positioning mechanism shell is connected with the fixed plate mechanism, the fixed plate mechanism is used to realize clamping of the workpiece, and the pulling mechanism is used to realize forward and backward movement of the fixed plate mechanism in cooperation with the contraction spring; the metal is clamped and fixed under the elastic force of the contraction spring; the fixed plate mechanism comprises a fixed plate, two fixed plates are fixedly connected with one end of the contraction spring rod, the two fixed plates are fixedly connected with one end of the positioning mechanism shell, a telescopic plate is fixedly connected between the two fixed plates, and L-shaped rods are fixedly arranged on one side of the two fixed plates; the pulling mechanism comprises a servo motor, the servo motor is fixed on the side wall of the positioning tool shell through bolts, a No. 1 winding wheel and a No. 2 winding wheel are fixed on the driving end of the servo motor, the No. 1 winding wheel is located above the No. 2 winding wheel, the inner wall of the No. 1 winding wheel is fixedly connected with one end of a No. 1 pulling rope, the other end of the No. 1 pulling rope passes through the No. 1 pulling rope groove and the No. 2 stretching groove and is fixedly connected with a fixed plate on the side of the positioning tool shell where the servo motor is fixed, and a pressure sensor is arranged on one side of the fixed plate; two brackets are fixedly arranged at two included angles on one side of the upper end surface of the positioning tool shell, two limiting assemblies are arranged on the side walls of the two brackets respectively, a limiting assembly is arranged on the rectangular plate on the side of the positioning tool shell where the servo motor is fixed, the five limiting assemblies are all at the same horizontal height, the inner wall of the No. 2 winding wheel is fixedly connected with one end of a No. 2 pulling rope, the other end of the No. 2 pulling rope passes through the five limiting assemblies and the No. 1 pulling rope groove and the No. 2 stretching groove and is fixedly connected with the fixed plate on the side of the positioning tool shell where the servo motor is fixed; the limiting assembly comprises a C-shaped shell, the C-shaped shells on the side walls of the two brackets are fixedly connected with the side walls of the brackets respectively, the C-shaped shell on the rectangular plate is fixedly connected with one side of the rectangular plate, a roller shaft is rotatably connected in the C-shaped shell, and one end of the No. 2 pulling rope passes through the inside of the five C-shaped shells and is slidably connected along the outer wall of the roller shaft; a limiting block is fixedly arranged above one end of the filter plate; a cutting fluid tank is arranged in the cutting fluid groove, a No. 2 insertion groove is formed above one end of the cutting fluid tank, and a linkage plate is inserted between the No. 2 insertion groove and the No. 1 insertion groove.

2. The positioning tooling fixture for metal cutting machining according to claim 1, characterized in that: The upper end surface of the positioning tool shell is provided with a falling groove, the inside of the positioning tool shell is provided with a scrap groove, a filtering groove and a cutting fluid groove, the scrap groove is above the filtering groove, the filtering groove is above the cutting fluid groove, one end of the positioning tool shell is provided with a recycling unit, and the other end of the positioning tool shell is provided with a cutting unit.

3. The positioning tooling fixture for metal cutting machining according to claim 2, characterized in that: The recycling unit comprises a filter plate, the filter plate is placed in the scrap groove, the inside of the filter plate is provided with filter holes with uniform size, the filter holes are at the same vertical height with the filtering groove and communicate with each other, and a No.1 insertion slot is formed below one end of the filter plate.

4. The positioning tooling fixture for metal cutting machining according to claim 3, characterized in that: The side wall of the falling groove is a wedge surface, so that part of the scrap and cutting fluid slide along the wedge surface.

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