A cutting device and tool for volute production

Abstract

The utility model discloses a cutting device and tool for spiral case production belong to the technical field of worm gear supercharger production, including base, the upper end surface articulation of base has the frame, and the right -hand member of frame is rotatably connected with two parallel cutting piece, and the left end of frame is provided with first driving device, and first driving device is used to drive two cutting piece rotation simultaneously. The utility model uses, fixes good then, and first driving device drives two cutting piece rotation, and then second driving device drives frame rotation, makes the right -hand member of frame rotatory and presses down and drives two two cutting piece simultaneously cutting section c and cutting section d, then adjusts the position of spiral case and cuts section a and cutting section b respectively, when cutting section a and cutting section b, complete through any cutting piece, and then next station only needs to cut the riser of the air inlet flange of compressor end spiral case and the air inlet flange of waste gas end spiral case, improves work efficiency and reduces the strength of manual work.

Description

Technical Field

[0001] This utility model belongs to the technical field of worm gear turbocharger production, and particularly relates to a cutting device and tooling for worm gear casing production. Background Technology

[0002] Please see Figure 11 and Figure 12 Currently, turbocharger casings are generally manufactured through casting. The cast casing includes a compressor-side casing 3 and an exhaust-side casing 4. An intermediate riser 5 is provided between the compressor-side casing 3 and the exhaust-side casing 4. External risers 6 are provided on the outer surfaces of both the compressor-side casing 3 and the exhaust-side casing 4. Flange risers 7 are provided on the intake flanges of both the compressor-side casing 3 and the exhaust-side casing 4. A riser is a supplementary part added to the top or side of the casting to prevent defects. In the mold, the riser cavity is a cavity that stores liquid metal. It replenishes metal during casting formation, preventing shrinkage cavities and porosity, venting gas, and slag accumulation. The main function of the riser is feeding. Therefore, after the volute is cast, the first step is to remove the riser, and then the cut surfaces are finished. The connection between the compressor end volute 3 and the exhaust end volute 4 and the intermediate riser 5 are cut surfaces a and b, respectively. The connection between the outer surface of the compressor end volute 3 and the exhaust end volute 4 and the outer riser 6 are cut surfaces c and d, respectively. The existing riser removal process involves four cuts, and the cutting sequence is cut surface a, cut surface b, cut surface c, and cut surface d. The cutting time is long, and it can only be done manually, which affects the cutting efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a cutting device and tooling for volute production, which has the advantage of high cutting efficiency and effectively solves the problem of low cutting efficiency caused by a large number of cutting operations in the prior art.

[0004] The present invention adopts the following technical solution: a cutting device for volute production, comprising a base, a frame hinged to the upper end of the base, two parallel cutting blades rotatably connected to the right end of the frame, a first driving device provided at the left end of the frame, the first driving device being used to drive the two cutting blades to rotate simultaneously, and a second driving device for driving the frame to rotate inside the base.

[0005] Furthermore, a telescopic mechanism with a locking device is provided between the cutting blade and the right end of the frame to adjust the distance between the two cutting blades.

[0006] Furthermore, two bushings are fixedly installed at the right end of the frame in the horizontal direction, and a rotating shaft is rotatably connected inside each bushing. The inner end of each rotating shaft is fixedly installed with the corresponding cutting blade.

[0007] Furthermore, the first driving device includes two motors fixedly mounted on the left end of the frame. Each motor's output shaft is fixedly equipped with a drive wheel, and each rotating shaft's outer end is fixedly equipped with a driven wheel. The drive wheel is connected to the corresponding driven wheel via a synchronous belt.

[0008] Furthermore, the telescopic mechanism includes an inner shaft that is slidably disposed within the rotating shaft along the axial direction, the inner end of the inner shaft being fixedly disposed with the cutting blade, and a locking device for locking the relative position of the inner shaft and the rotating shaft.

[0009] Furthermore, the locking device includes a plurality of set screws arranged radially within the rotating shaft, each set screw being threadedly connected to the rotating shaft.

[0010] Furthermore, the outer surface of the inner shaft is fixedly provided with a number of limiting keys along the axial direction, and the inner sidewall of the rotating shaft is provided with limiting grooves that are adapted to the limiting keys. Each limiting key of the inner shaft is located in the corresponding limiting groove.

[0011] Furthermore, the inner end of the inner shaft is coaxially fixed with a threaded post, which passes through the center hole of the cutting disc and is threadedly connected to a lock nut.

[0012] Furthermore, the second driving device includes a hydraulic telescopic rod hinged to the base, with a connecting rod hinged to the output end of the hydraulic telescopic rod, and the top end of the connecting rod hinged to the left end of the frame.

[0013] A tooling fixture, characterized in that it includes the cutting device for producing volutes as described in any one of the above claims, and further includes a machine base. A worktable is slidably arranged on the upper end face of the machine base in the front-back direction. Three pads are arranged on the upper end face of the worktable. Three vertical rods are arranged on the upper end face of the worktable. A horizontal bar is fixedly arranged at the top of each vertical rod in the horizontal direction. A locking screw is threadedly connected to the inside of each horizontal bar. A pressure block is rotatably connected to the bottom end of each locking screw. A slide rail is fixedly arranged on the upper end face of the machine base. Each slide rail is slidably arranged with the worktable. A threaded rod is arranged on the upper end face of the machine base in the front-back direction. The threaded rod is rotatably connected to the machine base. A driving block is threadedly connected to the outer surface of the threaded rod. The driving block is fixedly arranged with the lower end face of the worktable.

[0014] I. This utility model, by setting up a frame, a first drive device, a second drive device, and two cutting blades, allows the volute to be fixed in place during use. Then, the first drive device drives the two cutting blades to rotate, and the second drive device drives the frame to rotate, causing the right end of the frame to rotate and press down, thereby driving the two cutting blades to simultaneously cut surface c and surface d. Then, the position of the volute is adjusted to cut surface a and surface b respectively. When cutting surface a and surface b, either cutting blade can complete the cutting. Then, the next station only needs to cut the riser of the inlet flange of the compressor end volute and the inlet flange of the exhaust end volute, which improves work efficiency and reduces the intensity of manual labor.

[0015] II. This utility model, by setting a rotating shaft, an inner shaft, and set screws, allows for the adjustment of the distance between two cutting blades when the distance between them needs to be adjusted. Rotating each set screw causes it to move outward, disengaging the inner end of each set screw from the outer surface of the inner shaft. The inner shaft can then slide along the axis within the rotating shaft, thus adjusting the distance between the two cutting blades. After adjustment, rotating each set screw causes it to move inward, bringing the inner end of each set screw into contact with the outer surface of the inner shaft, locking the inner shaft and fixing the relative positions of the rotating shaft and the inner shaft. Attached Figure Description

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

[0017] Figure 2 This is a front view structural diagram of the present utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the motor in this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the driven wheel in this utility model;

[0020] Figure 5 This is a schematic diagram of the internal three-dimensional structure of the bushing in this utility model;

[0021] Figure 6 This is a schematic diagram of the internal three-dimensional structure of the rotating shaft in this utility model;

[0022] Figure 7 This is a schematic diagram of the internal three-dimensional structure of the base in this utility model;

[0023] Figure 8 This is a three-dimensional structural diagram of the servo motor in this utility model;

[0024] Figure 9 This is a three-dimensional structural diagram of the pressure block and pad block in this utility model;

[0025] Figure 10This is a schematic diagram of the internal three-dimensional structure of the workbench in this utility model;

[0026] Figure 11 This is a three-dimensional structural diagram of the volute in this utility model;

[0027] Figure 12 This is a three-dimensional structural diagram of the flange riser in this utility model;

[0028] Figure 13 This is a three-dimensional structural diagram of the volute shell placed on the pad block in this utility model.

[0029] In the diagram, 1. Base; 2. Cutting blade; 3. Compressor end volute; 4. Exhaust gas end volute; 5. Intermediate riser; 6. Outer riser; 7. Flange riser; 8. Bushing; 9. Rotating shaft; 10. Motor; 11. Drive wheel; 12. Driven wheel; 13. Synchronous belt; 14. Inner shaft; 15. Set screw; 16. Limit key; 17. Threaded post; 18. Center hole; 19. Locking nut; 20. Hydraulic telescopic rod; 21. Connecting rod; 22. Base plate; 23. Fixed arm; 24. Machine base; 25. Worktable; 26. Pad block; 27. Vertical rod; 28. Horizontal rod; 29. ​​Locking screw; 30. Pressure block; 31. Slide rail; 32. Threaded rod; 33. Drive block; 34. Servo motor. Detailed Implementation

[0030] Please see Figure 1-13 The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0031] The cutting device for volute production described in this utility model includes a base 1, with a frame hinged to the upper end of the base 1. Two parallel cutting blades 2 are rotatably connected to the right end of the frame. A first driving device is provided at the left end of the frame to drive the two cutting blades 2 to rotate simultaneously. A second driving device is also provided inside the base 1 to drive the frame to rotate, thereby enabling the right end of the frame to simultaneously lift and press the two cutting blades 2, achieving the purpose of cutting the workpiece on both sides simultaneously.

[0032] The production of existing turbocharger casings is generally achieved through casting. The cast casing includes a compressor-side casing 3 and an exhaust-side casing 4. An intermediate riser 5 is provided between the compressor-side casing 3 and the exhaust-side casing 4. External risers 6 are provided on the outer surfaces of both the compressor-side casing 3 and the exhaust-side casing 4. Flange risers 7 are provided on the intake flanges of both the compressor-side casing 3 and the exhaust-side casing 4. A riser is a supplementary part added to the top or side of the casting to prevent defects. In the mold, the riser cavity is a cavity that stores molten metal. It replenishes metal during casting formation, preventing shrinkage cavities and porosity, venting gas, and slag accumulation. The primary function of the riser is feeding. Therefore, after the volute is cast, the first step is to remove the riser, and then the cut surfaces are finished. The connection between the compressor end volute 3 and the exhaust end volute 4 and the intermediate riser 5 are cut surfaces a and b, respectively. The connection between the outer surface of the compressor end volute 3 and the exhaust end volute 4 and the outer riser 6 are cut surfaces c and d, respectively. The existing process for removing the riser is to make four cuts, and the cutting sequence is cut surface a, cut surface b, cut surface c and cut surface d.

[0033] The cutting process based on the technical solution of this application is as follows: two cutting blades 2 simultaneously cut surface c and surface d, and then the position of the volute is adjusted to cut surface a and surface b respectively. When cutting surface a and surface b, either cutting blade 2 is used to complete the cutting. Then, the next station only needs to cut the riser of the inlet flange of the compressor end volute 3 and the inlet flange of the exhaust end volute 4, which improves work efficiency and reduces the intensity of manual labor.

[0034] In this embodiment, a telescopic mechanism with a locking device is provided between the cutting blade 2 and the right end of the frame to adjust the distance between the two cutting blades 2 so as to accommodate the simultaneous cutting of the volute surface c and d of products of different specifications.

[0035] In this embodiment, two bushings 8 are fixedly installed at the right end of the frame in the horizontal direction. Each bushing 8 is rotatably connected to a rotating shaft 9. The inner end of each rotating shaft 9 is fixedly installed with the corresponding cutting blade 2. When the cutting blade 2 rotates, it drives the rotating shaft 9 to rotate within the bushing 8, thereby achieving the purpose of rotatably connecting the cutting blade 2 with the right end of the frame.

[0036] In this embodiment, the first driving device includes two motors 10 fixedly mounted on the left end of the frame. Each motor 10 has a drive wheel 11 fixedly mounted on its output shaft, and a driven wheel 12 fixedly mounted on the outer end of each rotating shaft 9. The drive wheel 11 is connected to the corresponding driven wheel 12 via a synchronous belt 13. In use, the two motors 10 are started, and the motors 10 drive the rotating shaft 9 to rotate via the drive wheel 11, the synchronous belt 13, and the driven wheel 12. The rotating shaft 9 drives the cutting blade 2 to rotate, thereby achieving the purpose of driving the two cutting blades 2 to rotate simultaneously.

[0037] In this embodiment, the telescopic mechanism includes an inner shaft 14 that is slidably disposed within the rotating shaft 9 along the axial direction. The inner end of the inner shaft 14 is fixedly disposed with the cutting blade 2. The locking device is used to lock the relative position of the inner shaft 14 and the rotating shaft 9, so as to fix the inner shaft 14 and the rotating shaft 9 at any position, thereby achieving the purpose of adjusting the distance between the two cutting blades 2.

[0038] In this embodiment, the locking device includes a plurality of set screws 15 arranged radially inside the rotating shaft 9. Each set screw 15 is threadedly connected to the rotating shaft 9. Rotating each set screw 15 causes it to move outward, so that the inner end of each set screw 15 disengages from the outer surface of the inner shaft 14. The inner shaft 14 can slide along the axis inside the rotating shaft 9 to adjust the distance between the two cutting blades 2. After adjustment, rotating each set screw 15 causes it to move inward, so that the inner end of each set screw 15 abuts against the outer surface of the inner shaft 14, thereby locking the inner shaft 14 and fixing the relative positions of the rotating shaft 9 and the inner shaft 14.

[0039] In this embodiment, a plurality of limiting keys 16 are fixedly provided on the outer surface of the inner shaft 14 along the axial direction. The inner sidewall of the rotating shaft 9 is provided with limiting grooves that are adapted to the limiting keys 16. Each limiting key 16 of the inner shaft 14 is located in the corresponding limiting groove. When the inner shaft 14 slides relative to the rotating shaft 9, the limiting key 16 slides in the corresponding limiting groove. At the same time, the limiting key 16 restricts the rotation of the inner shaft 14 relative to the rotating shaft 9. The motor 10 drives the rotating shaft 9, the rotating shaft 9 drives the inner shaft 14 to rotate, and the inner shaft 14 drives the cutting blade 2 to rotate.

[0040] In this embodiment, a threaded post 17 is coaxially fixed at the inner end of the inner shaft 14. The threaded post 17 passes through the center hole 18 of the cutting disc 2 and is threadedly connected to a locking nut 19. By rotating the locking nut 19, the locking nut 19 presses the cutting disc 2, thereby achieving the purpose of fixing the cutting disc 2 and the inner shaft 14.

[0041] In this embodiment, the second driving device includes a hydraulic telescopic rod 20 hinged to the base 1. The output end of the hydraulic telescopic rod 20 is hinged to a connecting rod 21, and the top end of the connecting rod 21 is hinged to the left end of the frame. In use, the motor 10 drives the two cutting blades 2 to rotate simultaneously. Then, the hydraulic telescopic rod 20 extends and drives the right end of the frame to rotate downward, so that the two cutting blades 2 press down simultaneously to cut the volute below, thereby achieving the purpose of the two cutting blades 2 pressing down to cut the workpiece simultaneously.

[0042] In this embodiment, the frame includes a base plate 22. Two fixed arms 23 are fixedly installed on the right side of the base plate 22. The right end of each fixed arm 23 is fixedly installed with a corresponding bushing 8. Two motors 10 are fixedly installed on the upper end of the base plate 22. The top end of the connecting rod 21 is hinged to the base plate 22. The connection between the base plate 22 and the fixed arm 23 is hinged to the base 1.

[0043] When using the cutting device, the volute is fixed below the cutting blade 2. Then, by starting the motor 10, the motor 10 sequentially drives the drive wheel 11, the synchronous belt 13, the driven wheel 12, the rotating shaft 9, the inner shaft 14, and the threaded column 17 to rotate, which in turn drives the cutting blade 2 fixed on the threaded column 17 to rotate. Then, the hydraulic telescopic rod 20 extends, driving the base plate 22 and the fixed arm 23 to rotate, causing the right end of the fixed arm 23 to rotate and press down, so that the two cutting blades 2 simultaneously cut surface c and surface d. Then, the position of the volute is adjusted, and surface a and surface b are cut by either cutting blade 2. Then, the next station only needs to cut the riser of the inlet flange of the compressor end volute 3 and the inlet flange of the exhaust end volute 4, which improves work efficiency and reduces the intensity of manual labor.

[0044] A tooling for fixing a volute casing and cooperating with a cutting device to complete the work of cutting the riser of the volute casing includes a base 24. A worktable 25 is slidably arranged on the upper end face of the base 24 in the front-back direction. Three pads 26 are arranged on the upper end face of the worktable 25. Three vertical rods 27 are arranged on the upper end face of the worktable 25. A horizontal bar 28 is fixedly arranged at the top of each vertical rod 27 in the horizontal direction. A locking screw 29 is threadedly connected to each horizontal bar 28. A pressure block 30 is rotatably connected to the bottom end of each locking screw 29.

[0045] In use, place the volute on the pad 26, so that there is a pad 26 below the compressor end volute 3, the exhaust end volute 4, and the intermediate riser 5. Each product specification has a corresponding pad 26. When changing products, the pads 26 need to be replaced at the same time. Then, by rotating the locking screw 29, the locking screw 29 moves downward, causing the pressure block 30 to press against the upper end face of the volute. This ensures that the three pressure blocks 30 press against the upper end faces of the compressor end volute 3, the intermediate riser 5, and the exhaust end volute 4, respectively, thus fixing the volute. Then, by extending the hydraulic telescopic rod 20, the support is rotated, causing the right end of the support to press down, so that the cutting blade 2 contacts the outer surface of the volute. At this time, the cutting blade 2 does not rotate. Observe whether each cutting blade 2 is aligned with the cutting surface c and the cutting surface d. If there is an error, adjust the position of the inner shaft 14 relative to the rotating shaft 9 to adjust the cutting. The position of blade 2 is adjusted (for the production of the same product, check once every morning at work to see if the position of blade 2 is aligned with the cut surfaces c and d. If there is an error, move the worktable 25, since the spacing between the two blades 2 has been adjusted). Align blade 2 with cut surfaces c and d, then lift blade 2, start motor 10 to rotate blade 2, and then use hydraulic telescopic rod 20 to press down both blades 2 simultaneously to cut cut surfaces c and d. After cutting, lift blade 2, move worktable 25 to align cut surface a with any blade 2, and cut surface a. Then move worktable 25 to align cut surface b with any blade 2, and cut surface b. Then move to the next workstation to cut the risers of the inlet flange of compressor end volute 3 and exhaust end volute 4.

[0046] In this embodiment, a slide rail 31 is fixedly provided on the upper end face of the base 24, and each slide rail 31 is slidably disposed with the worktable 25. A threaded rod 32 is provided on the upper end face of the base 24 in the front-back direction. The threaded rod 32 is rotatably connected to the base 24. A drive block 33 is threadedly connected to the outer surface of the threaded rod 32. The drive block 33 is fixedly disposed with the lower end face of the worktable 25. A servo motor 34 is fixedly disposed on one side of the base 24. The output shaft of the servo motor 34 is fixedly disposed with the threaded rod 32. By rotating the threaded rod 32, the drive block 33 is driven to move, thereby driving the worktable 25 to move, achieving the purpose of driving the worktable 25 to move back and forth. In normal production, since the dimensions of products of the same specification are the same, and the upper end face of the pad 26 is provided with an arc surface adapted to the volute, the middle pad 26 and The intermediate riser 5 has a positioning groove at its contact point that matches the intermediate riser 5. Therefore, the volute is positioned when placed on the pad 26. Thus, the worktable 25 can be moved by program control. First, the volute is placed on the pad 26 and then fixed by the pressure block 30. Then, the servo motor 34 is started by program control to move the worktable 25 to the first cutting position. Then, the motor 10 is started to rotate the two cutting blades 2. The hydraulic telescopic rod 20 extends and drives the two cutting blades 2 to press down on the cutting surfaces c and d at the same time. Second, the servo motor 34 is started by program control to move the worktable 25 to the second cutting position (the hydraulic telescopic rod 20 is used to lift the cutting blades 2). Then, the hydraulic telescopic rod 20 drives the two cutting blades 2 to press down on the cutting surface a. The same applies to the third step, cutting surface b.

Claims

1. A cutting device for producing volutes, comprising a base (1), characterized in that: The upper end of the base (1) is hinged to a frame. The right end of the frame is rotatably connected to two parallel cutting blades (2). The left end of the frame is provided with a first driving device, which is used to drive the two cutting blades (2) to rotate simultaneously. The base (1) is also provided with a second driving device for driving the frame to rotate.

2. The cutting device for volute production according to claim 1, characterized in that: A telescopic mechanism with a locking device is provided between the cutting blade (2) and the right end of the frame to adjust the distance between the two cutting blades (2).

3. The cutting device for volute production according to claim 1, characterized in that: Two bushings (8) are fixedly installed on the right end of the frame in the horizontal direction. Each bushing (8) is rotatably connected to a rotating shaft (9). The inner end of each rotating shaft (9) is fixedly installed with the corresponding cutting blade (2).

4. The cutting device for volute production according to claim 3, characterized in that: The first driving device includes two motors (10) fixedly installed on the left end of the frame. Each motor (10) has a drive wheel (11) fixedly installed on its output shaft. Each rotating shaft (9) has a driven wheel (12) fixedly installed on its outer end. The drive wheel (11) is connected to the corresponding driven wheel (12) via a synchronous belt (13).

5. The cutting device for volute production according to claim 2, characterized in that: The telescopic mechanism includes an inner shaft (14) that is slidably disposed within a rotating shaft (9) along the axial direction. The inner end of the inner shaft (14) is fixedly disposed with the cutting blade (2). A locking device is used to lock the relative position of the inner shaft (14) and the rotating shaft (9).

6. The cutting device for producing volutes according to claim 5, characterized in that: The locking device includes a plurality of set screws (15) arranged radially within the rotating shaft (9), each set screw (15) being threadedly connected to the rotating shaft (9).

7. The cutting device for volute production according to claim 6, characterized in that: The outer surface of the inner shaft (14) is fixedly provided with several limit keys (16) along the axial direction. The inner sidewall of the rotating shaft (9) is provided with a limit groove that matches the limit key (16). Each limit key (16) of the inner shaft (14) is located in the corresponding limit groove.

8. The cutting device for producing volutes according to claim 5, characterized in that: The inner end of the inner shaft (14) is coaxially fixed with a threaded post (17), which passes through the center hole (18) of the cutting disc (2) and is threadedly connected with a lock nut (19).

9. The cutting device for producing volutes according to claim 1, characterized in that: The second drive device includes a hydraulic telescopic rod (20) hinged to the base (1), and a connecting rod (21) is hinged to the output end of the hydraulic telescopic rod (20). The top end of the connecting rod (21) is hinged to the left end of the frame.

10. A tooling, characterized in that, The cutting device for producing a volute, as described in any one of claims 1 to 9, further includes a base (24), a worktable (25) slidably disposed on the upper end face of the base (24) in the front-rear direction, three pads (26) disposed on the upper end face of the worktable (25), three vertical rods (27) disposed on the upper end face of the worktable (25), a horizontal rod (28) fixedly disposed at the top of each vertical rod (27) in the horizontal direction, a locking screw (29) threadedly connected to each horizontal rod (28), and a pressure block (3) rotatably connected to the bottom end of each locking screw (29). 0); A slide rail (31) is fixedly installed on the upper end face of the base (24). Each slide rail (31) is slidably installed with the worktable (25). A threaded rod (32) is installed on the upper end face of the base (24) along the front-back direction. The threaded rod (32) is rotatably connected to the base (24). A drive block (33) is threadedly connected to the outer surface of the threaded rod (32). The drive block (33) is fixedly installed with the lower end face of the worktable (25). A servo motor (34) is fixedly installed on one side of the base (24). The output shaft of the servo motor (34) is fixedly installed with the threaded rod (32).

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