Turning tool and clamping device

Abstract

The utility model provides a turning tool and a clamping device. The turning tool comprises a tool bar, a mounting hole is formed in the tool bar, a blade is inserted into the mounting hole, the first end of the blade extends out of the side wall of the tool bar, and an inclined machining face is arranged at the first end of the blade. A fastening device is arranged at one end of the cutter bar and abuts against the blade. And when the fastening device is loosened, the blade can rotate in the mounting hole. The blade is inserted into the mounting hole, and the fastening device is screwed down, so that the fastening device abuts against the blade, and the blade is fixed in the mounting hole. After the blade is used for machining the spiral oil groove in one rotating direction, the fastening device is loosened, so that the fastening device is separated from the blade, and the fastening device does not limit the blade at the moment. The blade is rotated in the mounting hole to change the orientation of the inclined machining surface of the first end of the blade, so that the blade is suitable for machining another spiral oil groove. And turning tools do not need to be replaced when spiral oil grooves with different rotating directions are machined, so that working procedures are reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe processing, in particular to a turning tool and a clamping device. Background Art

[0002] The compressor flange and the crankshaft need to be matched with each other in a clearance manner. When the crankshaft is running at high speed, the flange needs to use a spiral oil groove for oil supply to ensure that the crankshaft will not wear due to lack of oil when running at high speed.

[0003] Flanges are divided into upper flanges and lower flanges, and spiral oil grooves have two rotation directions: left-handed and right-handed. The spiral oil groove needs to be processed by the company itself, using ordinary CNC lathes, so a special turning tool needs to be designed. Since the spiral oil groove has two rotation directions, when processing spiral oil grooves with different rotation directions, the turning tool needs to be replaced so that the tilting direction of the turning tool corresponds to the rotation direction of the spiral oil groove. Replacing the turning tool will add a process, thereby increasing production costs.

[0004] Therefore, a turning tool that can be applied to spiral oil grooves of different rotation directions is needed, and the turning tool does not need to be replaced when processing spiral oil grooves of different rotation directions, thereby reducing the number of working steps and reducing production costs. Utility Model Content

[0005] In order to overcome the problems existing in the related technology, the purpose of the utility model is to provide a turning tool, which can be suitable for spiral oil grooves with different rotation directions. There is no need to replace the turning tool when processing spiral oil grooves with different rotation directions, thereby reducing the number of working steps and reducing production costs.

[0006] A turning tool comprises a tool bar, the tool bar is provided with a mounting hole, a blade is inserted into the mounting hole, the first end of the blade extends out from the side wall of the tool bar, and the first end of the blade is provided with an inclined processing surface; the first end of the tool bar is connected to a fastening device, and the fastening device abuts against the blade; when the fastening device is loosened, the blade can rotate in the mounting hole.

[0007] The first end of the blade has a certain inclination angle. Since the spiral oil groove has two rotation directions, left-handed and right-handed, the blade can only be used for one type of spiral oil groove at a time, such as a left-handed spiral oil groove. Insert the blade into the mounting hole, tighten the fastening device so that the fastening device abuts against the blade, thereby fixing the blade in the mounting hole. After using the blade to process a spiral oil groove of one rotation direction, loosen the fastening device so that the fastening device is separated from the blade, and the fastening device does not have a limiting effect on the blade at this time. Rotate the blade in the mounting hole to change the direction of the inclined processing surface of the first end of the blade, so that the blade is suitable for processing another type of spiral oil groove, such as a right-handed spiral oil groove. The above-mentioned turning tool can quickly rotate the blade after processing one type of spiral oil groove to process another type of spiral oil groove, which has the advantages of convenience and speed. There is no need to replace the turning tool when processing spiral oil grooves of different rotation directions, thereby reducing the number of processes and reducing production costs.

[0008] In a preferred technical solution of the utility model, a groove is provided in the arbor along the axial direction, the groove is communicated with the mounting hole, and an inner wall of the groove is provided with an internal thread.

[0009] The fastening device is rotated in a first direction so that the fastening device approaches the blade along the axis of the knife bar until the fastening device abuts the blade. The fastening device is rotated in a second direction so that the fastening device moves away from the blade along the axis of the knife bar until the fastening device is separated from the blade.

[0010] In a preferred technical solution of the utility model, the fastening device is adapted to the groove, and the groove is used for allowing the fastening device to move along the axial direction of the knife rod.

[0011] The size of the fastening device is the same as that of the groove, and the fastening device can move in the groove so that the fastening device abuts against or separates from the blade in the mounting hole.

[0012] In a preferred technical solution of the utility model, the fastening device includes a fastening screw, and the fastening screw is provided with an external thread, and the external thread is adapted to the internal thread.

[0013] With the cooperation of the internal thread of the groove and the external thread of the fastening screw, screw in the fastening screw so that the fastening screw moves toward the blade until the fastening screw contacts the blade to limit the blade. Unscrew the fastening screw so that the fastening screw moves away from the blade until the fastening screw separates from the blade and the blade is rotated in the mounting hole so that the blade is suitable for rotating oil grooves with different rotation directions.

[0014] In a preferred technical solution of the utility model, the turning tool further comprises a tool sleeve, the second end of the tool rod is inserted into the tool sleeve, and the tool sleeve is used to fix the tool rod.

[0015] Use the tool holder to secure the tool bar, thereby securing the blade in the mounting hole of the tool bar.

[0016] In a preferred technical solution of the utility model, the angle range of the front angle of the blade is 5 degrees to 9 degrees, the angle range of the back angle of the blade is 40 degrees to 50 degrees, and the angle range of the blade inclination angle is 1 degree to 3 degrees.

[0017] The front angle, back angle and edge inclination angle of the blade have different angle ranges, so that the blade can cut spiral oil grooves on flanges of different models.

[0018] The second purpose of the utility model is to provide a clamping device, including a chuck, a fixed block is installed on the chuck, and a positioning structure is arranged near the fixed block; a clamping claw is circumferentially arranged on the chuck, the positioning structure is used to position the flange, and the clamping claw is used to clamp the flange, and the flange is cut using any of the turning tools described above.

[0019] The clamping device is set on the CNC machine tool, and the flange is clamped by the clamping device, and the spiral oil groove is cut on the inner wall of the flange by the turning tool. The clamping jaws and the fixed block are set at intervals, that is, a fixed block is set on both sides of a clamping jaw. Under the guidance of the positioning structure, the flange is placed on the fixed block, and the end face of the flange contacts the fixed block. The clamping jaws are opened before the flange is placed, and the clamping jaws clamp the flange after the flange is placed. After fixing the flange, the turning tool performs linear feed motion, and the chuck rotates to realize the cutting path of the turning tool for processing the spiral oil groove. After multiple cycles, the spiral oil groove of the flange is cut out.

[0020] In a preferred technical solution of the utility model, the positioning structure includes a rhombus pin and a cylindrical pin relatively arranged on both sides of the chuck, the rhombus pin is inserted into the first positioning hole of the flange, and the cylindrical pin is inserted into the second positioning hole of the flange.

[0021] The diamond pin is matched with the first positioning hole of the flange, and the cylindrical pin is matched with the second positioning hole of the flange. Combining the diamond pin and the cylindrical pin, the angle of the flange can be fixed to prevent the flange from rotating when the turning tool performs cutting processing on the inner wall of the flange.

[0022] In a preferred technical solution of the utility model, the clamping device also includes a main shaft, the end surface of the main shaft is provided with a base pad, the end of the base pad away from the main shaft is connected to a clamping claw base, and the clamping claw is provided on the clamping claw base.

[0023] The clamping jaw is connected to the spindle using a clamping jaw base and a base pad. When the relative positions of the clamping jaw and the chuck remain unchanged, the clamping jaw can clamp the flange to improve the precision of the turning tool cutting process.

[0024] In a preferred technical solution of the utility model, the end surface of the main shaft is also provided with a chassis, and the chassis is connected to the chuck.

[0025] The chassis is located in the middle of the end surface of the spindle. The chuck is connected to the spindle using the chassis, and the chuck is locked on the chassis.

[0026] The beneficial effects of the utility model are:

[0027] The utility model provides a turning tool, which includes a tool bar, a mounting hole, a blade inserted in the mounting hole, a first end of the blade extending from the side wall of the tool bar, and an inclined processing surface arranged at the first end of the blade; a fastening device is arranged at one end of the tool bar, and the fastening device abuts against the blade; when the fastening device is loosened, the blade can rotate in the mounting hole. The first end of the blade has a certain inclination angle, and since the spiral oil groove has two rotation directions, left-handed and right-handed, the blade can only be used for one type of spiral oil groove at a time, such as a left-handed spiral oil groove. The blade is inserted into the mounting hole, and the fastening device is tightened so that the fastening device abuts against the blade, thereby fixing the blade in the mounting hole. After the blade is used to process a spiral oil groove of one rotation direction, the fastening device is loosened so that the fastening device is separated from the blade, and the fastening device does not have a limiting effect on the blade at this time. The blade is rotated in the mounting hole to change the direction of the inclined processing surface of the first end of the blade, so that the blade is suitable for processing another type of spiral oil groove, such as a right-handed spiral oil groove. The turning tool can quickly rotate the blade after processing one spiral oil groove to process another spiral oil groove, which has the advantages of convenience and speed. When processing spiral oil grooves of different rotation directions, there is no need to replace the turning tool, thereby reducing the process and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a first structural schematic diagram of the turning tool provided by the utility model;

[0029] Figure 2 It is a second structural schematic diagram of the turning tool provided by the utility model;

[0030] Figure 3 This is a front view of the knife bar provided by the utility model;

[0031] Figure 4 yes Figure 3 Cross-sectional view along AA direction;

[0032] Figure 5 It is a structural schematic diagram of the flange provided by the utility model being assembled on the clamping device;

[0033] Figure 6 It is a structural schematic diagram of the clamping device provided by the utility model;

[0034] Figure 7It is a structural schematic diagram of the base pad provided by the utility model;

[0035] Figure 8 The utility model provides a structural schematic diagram of cutting a flange using a turning tool.

[0036] Figure numerals: 1. turning tool; 11. tool rod; 12. mounting hole; 13. blade; 14. fastening device; 141. fastening screw; 15. groove; 16. tool sleeve; 2. clamping device; 21. chuck; 22. fixing block; 23. positioning structure; 231. diamond pin; 232. cylindrical pin; 24. clamping jaw; 25. spindle; 26. base pad; 27. clamping jaw base; 28. chassis; 3. flange; 31. first positioning hole; 32. second positioning hole. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0038] Example 1

[0039] like Figure 1 , Figure 3 and Figure 4 As shown, this embodiment provides a turning tool 1, including a tool rod 11, the tool rod 11 is provided with a mounting hole 12, a blade 13 is inserted into the mounting hole 12, the first end of the blade 13 extends out from the side wall of the tool rod 11, and the first end of the blade 13 is provided with an inclined processing surface; the first end of the tool rod 11 is connected to a fastening device 14, and the fastening device 14 abuts against the blade 13; when the fastening device 14 is loosened, the blade 13 can rotate in the mounting hole 12.

[0040] The knife bar 11 is used to clamp the blade 13. The knife bar 11 is arranged in the horizontal direction, and the mounting hole 12 passes through the side wall of the knife bar 11. The blade 13 is arranged in the height direction, and the blade 13 is perpendicular to the knife bar 11.

[0041] The mounting hole 12 is arranged near the first end of the blade 11, and the relative position between the fastening device 14 and the blade 13 in the mounting hole 12 is adjustable. The fastening device 14 is screwed on so that the fastening device 14 moves toward the direction close to the blade 13 until the fastening device 14 abuts against the blade 13. The fastening device 14 is loosened so that the fastening device 14 moves away from the blade 13 until the fastening device 14 is separated from the blade 13.

[0042] The second end of the blade 13 is located in the mounting hole 12 and is flush with the side wall of the shank 11. The second end of the blade 13 may also extend from the mounting hole 12, which is not limited here. A portion of the blade 13 is cylindrical, and the other portion, i.e., the first end of the blade 13, is conical with an inclined angle. The first end of the blade 13 is used to cut and process a spiral oil groove on the inner wall of the flange 3.

[0043] After the blade 13 is fixed by the fastening device 14, the blade 13 is used to process a spiral oil groove, such as a left-handed spiral oil groove. After the processing, the relative position of the fastening device 14 and the blade 13 is adjusted so that the fastening device 14 and the blade 13 are separated. After the fastening device 14 is separated from the blade 13, the blade 13 is rotated in the mounting hole 12 to change the direction of the first end of the blade 13, and the blade 13 is used to process another spiral oil groove, such as a right-handed spiral oil groove. Compared with the traditional blade 13, the blade 13 of this embodiment does not need to switch the blade 13 when processing spiral oil grooves of different rotation directions, which saves processes and reduces processing costs.

[0044] The diameter of the tool bar 11 is 12 mm. The tool bar 11 is made of 304 austenitic stainless steel, which is low in cost and meets the strength requirements. The tool bar 11 can also be made of 45# medium carbon steel. The blade 13 is made of cemented carbide YG10 to meet the requirements of cutting flanges 3 made of powder metallurgy, gray cast iron and ductile iron.

[0045] A turning tool 1 provided in this embodiment includes a tool bar 11, the tool bar 11 is provided with a mounting hole 12, a blade 13 is inserted into the mounting hole 12, the first end of the blade 13 extends from the side wall of the tool bar 11, and the first end of the blade 13 is provided with an inclined processing surface; a fastening device 14 is provided at one end of the tool bar 11, and the fastening device 14 abuts against the blade 13; when the fastening device 14 is loosened, the blade 13 can rotate in the mounting hole 12. The first end of the blade 13 has a certain inclination angle. Since the spiral oil groove has two rotation directions, left-handed and right-handed, the blade 13 can only be used for one type of spiral oil groove at a time, such as a left-handed spiral oil groove. The blade 13 is inserted into the mounting hole 12, and the fastening device 14 is tightened so that the fastening device 14 abuts against the blade 13, thereby fixing the blade 13 in the mounting hole 12. After the blade 13 is used to process a spiral oil groove of a rotation direction, the fastening device 14 is loosened so that the fastening device 14 is separated from the blade 13, and the fastening device 14 does not have a limiting effect on the blade 13 at this time. The blade 13 is rotated in the mounting hole 12 to change the orientation of the inclined processing surface of the first end of the blade 13, so that the blade 13 is suitable for processing another spiral oil groove, such as a right-hand spiral oil groove. The above-mentioned turning tool 1 can quickly rotate the blade 13 after processing one spiral oil groove to process another spiral oil groove, which has the advantages of convenience and speed. When processing spiral oil grooves of different rotation directions, there is no need to replace the turning tool 1, thereby reducing the process and reducing the production cost.

[0046] Example 2

[0047] like Figure 1 , Figure 3 and Figure 4 As shown, this embodiment provides a turning tool, including a tool rod 11, the tool rod 11 is provided with a mounting hole 12, a blade 13 is inserted into the mounting hole 12, the first end of the blade 13 extends out from the side wall of the tool rod 11, and the first end of the blade 13 is provided with an inclined processing surface; the first end of the tool rod 11 is connected to a fastening device 14, and the fastening device 14 abuts against the blade 13; when the fastening device 14 is loosened, the blade 13 can rotate in the mounting hole 12.

[0048] A groove 15 is formed in the arbor 11 along the axial direction. The groove 15 is communicated with the mounting hole 12 , and an inner wall of the groove 15 is provided with an internal thread.

[0049] The fastening device 14 is adapted to the groove 15 , and the groove 15 is used for allowing the fastening device 14 to move along the axial direction of the knife rod 11 .

[0050] The groove 15 in the knife bar 11 is adapted to the fastening device 14. The fastening device 14 at the first end of the knife bar 11 can move in the groove 15. The fastening device 14 is rotated in a first direction so that the fastening device 14 moves toward the blade 13 until the fastening device 14 abuts against the blade 13. The fastening device 14 is rotated in a second direction so that the fastening device 14 moves away from the blade 13 until the fastening device 14 separates from the blade 13. The groove 15 in the knife bar 11 extends along the axis of the knife bar 11, and the diameter of the groove 15 is smaller than the diameter of the knife bar 11. This embodiment takes the first direction as a clockwise direction and the second direction as a counterclockwise direction as an example.

[0051] The fastening device 14 includes a fastening screw 141 . The fastening screw 141 is provided with an external thread that is adapted to the internal thread.

[0052] In this embodiment, the fastening screw 141 is taken as an example of a hexagon socket head screw. The diameter of the arbor 11 is 12 mm. A mounting hole 12 is provided near the first end of the arbor 11, and the diameter of the mounting hole 12 is 6 mm. The screw rod of the fastening screw 141 is inserted into the groove 15, and an external thread is provided on the screw rod, and the external thread is adapted to the internal thread in the groove 15. The fastening screw 141 is screwed in until the screw rod of the fastening screw 141 abuts against the blade 13, thereby fixing the blade 13 in the mounting hole 12. The fastening screw 141 is unscrewed until the screw rod of the fastening screw 141 is separated from the blade 13. The nut of the fastening screw 141 is located outside the arbor 11, and the groove 15 is provided between the nut and the mounting hole 12, and the groove 15 provides space for axial movement of the fastening screw 141.

[0053] The direction of screwing in the fastening screw 141 is the clockwise direction, and the direction of screwing out the fastening screw 141 is the counterclockwise direction.

[0054] The length of the screw rod of the fastening screw 141 is greater than or equal to the length of the groove 15. If the length of the screw rod of the fastening screw 141 is equal to the length of the groove 15, when the screw rod of the fastening screw 141 abuts against the blade 13, the screw rod of the fastening screw 141 is completely located in the groove 15, and the nut of the fastening screw 141 abuts against the first end of the knife bar 11. If the length of the screw rod of the fastening screw 141 is greater than the length of the groove 15, when the screw rod of the fastening screw 141 abuts against the blade 13, a part of the screw rod of the fastening screw 141 is located in the groove 15, and the other part is located outside the knife bar 11, and there is a gap between the nut of the fastening screw 141 and the first end of the knife bar 11.

[0055] In the present embodiment, a groove 15 is provided in the axial direction of the shank 11, the groove 15 is connected to the mounting hole 12, and the inner wall of the groove 15 is provided with an internal thread. The fastening device 14 is adapted to the groove 15, and the groove 15 is used for the fastening device 14 to move along the axial direction of the shank 11. The fastening device 14 includes a fastening screw 141, and the fastening screw 141 is provided with an external thread, and the external thread is adapted to the internal thread. The fastening screw 141 is screwed in, so that the fastening screw 141 moves in a direction close to the blade 13, until the fastening screw 141 abuts against the blade 13, thereby fixing the blade 13 in the mounting hole 12. After the blade 13 is used to machine a spiral oil groove of a corresponding rotation direction on the inner wall of a flange 3, the fastening screw 141 is screwed out, so that the fastening screw 141 moves in a direction away from the blade 13, until the fastening screw 141 is separated from the blade 13. At this time, the blade 13 is rotated in the mounting hole 12 to change the orientation of the inclined processing surface of the first end of the blade 13 , and the spiral oil groove of the corresponding rotation direction is processed on the inner wall of the other flange 3 using the rotated blade 13 .

[0056] Example 3

[0057] like Figure 2 As shown, this embodiment provides a turning tool, including a tool rod 11, the tool rod 11 is provided with a mounting hole 12, a blade 13 is inserted into the mounting hole 12, the first end of the blade 13 extends out from the side wall of the tool rod 11, and the first end of the blade 13 is provided with an inclined processing surface; the first end of the tool rod 11 is connected to a fastening device 14, and the fastening device 14 abuts against the blade 13; when the fastening device 14 is loosened, the blade 13 can rotate in the mounting hole 12.

[0058] The turning tool 1 further includes a tool sleeve 16 , into which the second end of the tool rod 11 is inserted, and the tool sleeve 16 is used to fix the tool rod 11 .

[0059] Preferably, a limiting mechanism is provided in the knife sleeve 16, and the knife bar 11 is inserted into the knife sleeve 16, and the limiting mechanism is used to limit the knife bar 11. The limiting mechanism can be a buckle or a fixing ring, and the size of the buckle and the fixing ring is adapted to the size of the knife bar 11.

[0060] The tool holder 16 is made of 45# medium carbon steel and needs to undergo vacuum heat treatment to reach a hardness of 55-60HRC, thereby increasing the clamping hardness requirements and reducing abnormal clamping displacement caused by wear. Overall, it meets the lathe clamping requirements.

[0061] The front angle of the blade 13 ranges from 5 degrees to 9 degrees, the back angle of the blade 13 ranges from 40 degrees to 50 degrees, and the rake angle of the blade 13 ranges from 1 degree to 3 degrees.

[0062] After fixing the flange 3, the thread cutting program is written on the CNC lathe, and the lathe controls the cutting feed mode of the turning tool 1 to perform cutting processing to complete the spiral groove processing. The design of the turning tool 1 needs to meet the current processing requirements. The radius of the spiral oil groove of different models of flanges 3 has four specifications of 1 mm, 1.5 mm, 2.0 mm and 2.5 mm.

[0063] Preferably, the front angle of the blade 13 is set to 7 degrees, the back angle is set to 45 degrees, and the edge inclination angle is set to 2 degrees. The blade tip arc is designed according to the radius of the spiral oil groove, and the tip R angle uses the R0.4 standard, that is, the tip R angle meets the specification of a radius of 0.4 mm.

[0064] Existing turning tools include R-type, S-type, C-type, W-type, T-type, D-type and V-type turning tools, which are unable to process some more complex spiral oil grooves. The back angle of the blade 13 of the turning tool 1 of this embodiment has higher strength, and the cutting edge can be designed according to the spiral oil groove radius of the flange 3, so that the spiral oil groove can be formed in one step, which is more efficient and less costly.

[0065] The turning tool 1 of this embodiment also includes a tool sleeve 16, and the second end of the tool rod 11 is inserted into the tool sleeve 16. A buckle or a fixing ring can be provided in the tool sleeve 16 to fix the tool rod 11. When the turning tool 1 performs cutting processing on the inner wall of the flange 3, the tool sleeve 16 is used to fix the tool rod 11 to prevent the tool rod 11 from displacement.

[0066] Example 4

[0067] like Figure 5 and Figure 8 As shown, this embodiment provides a clamping device 2, including a chuck 21, a fixed block 22 is installed on the chuck 21, and a positioning structure 23 is arranged near the fixed block 22; a clamping jaw 24 is circumferentially arranged on the chuck 21, the positioning structure 23 is used to position the flange 3, and the clamping jaw 24 is used to clamp the flange 3, and the flange 3 is cut using the turning tool 1 described in any one of Examples 1 to 3.

[0068] The clamping device 2 is arranged on a numerically controlled machine tool. The clamping device 2 is used to clamp the flange 3. The turning tool 1 is used to cut and process a spiral oil groove on the inner wall of the flange 3. The flange 3 in this embodiment refers to the upper flange of the compressor.

[0069] In this embodiment, three fixing blocks 22 and three clamping jaws 24 are provided circumferentially on the chuck 21 as an example, and the clamping jaws 24 and the fixing blocks 22 are arranged at intervals, that is, a fixing block 22 is provided on both sides of a clamping jaw 24. A plurality of screw holes are provided on the chuck 21, and the clamping jaws 24 and the fixing blocks 22 are screw-connected to the chuck 21.

[0070] A positioning structure 23 is provided inside the fixing block 22, and the flange 3 is placed on the chuck 21 under the guidance of the positioning structure 23. The flange 3 is placed on the fixing block 22, and the end surface of the flange 3 is closely attached to the upper surface of the fixing block 22.

[0071] The clamping jaws 24 can be opened and clamped. The clamping jaws 24 are opened to place the flange 3 on the fixing block 22. At this time, the flange 3 is located inside the three clamping jaws 24. The clamping jaws 24 are clamped to fix the flange 3. After fixing the flange 3, the turning tool 1 performs a linear feed motion, and the chuck 21 rotates to realize the cutting path of the turning tool 1 to process the spiral oil groove. After multiple cycles, the spiral oil groove of the flange 3 is cut out.

[0072] The clamping jaw 24 includes a first arcuate surface, the first arcuate surface contacts the flange 3, and the first arcuate surface is used to clamp the flange 3. The clamping jaw 24 also includes a second arcuate surface, the second arcuate surface is arranged opposite to the first arcuate surface, and the length of the second arcuate surface is greater than the length of the first arcuate surface. The clamping jaw 24 also includes a side surface, the side surface is linear, and a fixing block 22 is arranged near the side surface of the clamping jaw 24.

[0073] The chuck 21 is circular in shape, and the end surface of the chuck 21 is provided with a positioning structure 23 and a fixing block 22 in sequence from the inside to the outside. The clamping jaw 24 can be arranged above the chuck 21, and the bottom of the clamping jaw 24 does not contact the chuck 21; or the clamping jaw 24 can be connected to the chuck 21, and the bottom of the clamping jaw 24 contacts the chuck 21.

[0074] This embodiment provides a clamping device 2, including a chuck 21, a fixed block 22 is installed on the chuck 21, and a positioning structure 23 is arranged near the fixed block 22; a clamping jaw 24 is arranged circumferentially on the chuck 21, the positioning structure 23 is used to position the flange 3, and the clamping jaw 24 is used to clamp the flange 3, and the flange 3 is cut using the turning tool 1 of any one of the embodiments 1 to 3. Under the guidance of the positioning structure 23, the flange 3 is placed on the fixed block 22, and the end face of the flange 3 contacts the fixed block 22. The clamping jaw 24 is opened before the flange 3 is placed, and the clamping jaw 24 clamps the flange 3 after the flange 3 is placed. After fixing the flange 3, the turning tool 1 performs a linear feed motion, and the chuck 21 rotates to realize the cutting path of the turning tool 1 for processing the spiral oil groove. After multiple cycles, the spiral oil groove of the flange 3 is cut out.

[0075] Example 5

[0076] like Figure 5 and Figure 8 As shown, this embodiment provides a clamping device 2, including a chuck 21, a fixed block 22 is installed on the chuck 21, and a positioning structure 23 is arranged near the fixed block 22; a clamping jaw 24 is circumferentially arranged on the chuck 21, the positioning structure 23 is used to position the flange 3, and the clamping jaw 24 is used to clamp the flange 3, and the flange 3 is cut using the turning tool 1 described in any one of Examples 1 to 3.

[0077] like Figure 6-Figure 7 As shown, the positioning structure 23 includes a rhombus pin 231 and a cylindrical pin 232 arranged on both sides of the chuck 21 , the rhombus pin 231 is inserted into the first positioning hole 31 of the flange 3 , and the cylindrical pin 232 is inserted into the second positioning hole 32 of the flange 3 .

[0078] The diamond pin 231 is matched with the first positioning hole 31 of the flange 3, and the cylindrical pin 232 is matched with the second positioning hole 32 of the flange 3. Combining the diamond pin 231 and the cylindrical pin 232, the angle of the flange 3 can be fixed to prevent the flange 3 from rotating when the turning tool 1 cuts the inner wall of the flange 3.

[0079] The clamping device further comprises a main shaft 25 , an end surface of the main shaft 25 is provided with a base pad 26 , an end of the base pad 26 away from the main shaft 25 is connected to a clamping jaw base 27 , and the clamping jaw 24 is provided on the clamping jaw base 27 .

[0080] The base pad 26 serves to connect the clamping jaw base 27 and the main shaft 25, and the clamping jaw 24 is installed on the clamping jaw base 27. A plurality of screw holes are provided on the top of the clamping jaw 24, and screws are inserted into the screw holes. The clamping jaw 24 includes a first arcuate surface and a second arcuate surface. The first arcuate surface abuts against the flange 3, and the first arcuate surface is used to clamp the flange 3, and the second arcuate surface abuts against the clamping jaw base 27. The side of the clamping jaw 24 away from the flange 3 is clamped with the clamping jaw base 27. Under the connection effect of the screw and the clamping effect of the clamping jaw base 27 on the clamping jaw 24, the clamping jaw 24 is fixed on the clamping jaw base 27.

[0081] The end surface of the spindle 25 is also provided with a chassis 28, and the chassis 28 is connected to the chuck 21. The chassis 28 is located in the middle of the end surface of the spindle 25, and the chuck 21 is locked on the chassis 28. In this embodiment, the shape of the chassis 28 is Y-shaped as an example, a through hole is opened in the middle of the chassis 28, and an annular flange is provided on the side of the chuck 21 close to the chassis 28. The annular flange of the chuck 21 is inserted into the through hole of the chassis 28, so that the chuck 21 is installed on the chassis 28.

[0082] An oil cylinder is arranged inside the main shaft 25 , and the clamping jaws 24 are connected with an inclined cylinder. The extension or retraction of the oil cylinder will cause the clamping jaws 24 to clamp or release the flange 3 .

[0083] The positioning structure 23 of this embodiment includes a rhombus pin 231 and a cylindrical pin 232 arranged on both sides of the chuck 21, the rhombus pin 231 is inserted into the first positioning hole 31 of the flange 3, and the cylindrical pin 232 is inserted into the second positioning hole 32 of the flange 3. The clamping device 2 also includes a main shaft 25, the end surface of the main shaft 25 is provided with a base pad 26, the end of the base pad 26 away from the main shaft 25 is connected to a clamping claw base 27, and the clamping claw 24 is arranged on the clamping claw base 27. The end surface of the main shaft 25 is also provided with a chassis 28, and the chassis 28 is connected to the chuck 21. Under the joint action of the rhombus pin 231 and the cylindrical pin 232, the flange 3 can be limited to prevent the flange 3 from rotating during the process of the turning tool 1 cutting the inner wall of the flange 3. The clamping claw base 27 is used to fix the clamping claw 24, and the chassis 28 is used to fix the chuck 21. The clamp 24 is connected to the spindle 25 using the clamp base 27 and the base pad 26, and the chuck 21 is connected to the spindle 25 using the chassis 28. When the relative positions of the clamp 24 and the chuck 21 remain unchanged, the clamp 24 can clamp the flange 3 to improve the cutting accuracy of the turning tool 1.

[0084] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a restriction. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in the subsequent accompanying drawings.

[0085] It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would then be positioned "below" or "below" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0086] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0087] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A turning tool, characterized in that: It comprises a tool rod, the tool rod is provided with a mounting hole, a blade is inserted into the mounting hole, the first end of the blade extends out from the side wall of the tool rod, and the first end of the blade is provided with an inclined processing surface; the first end of the tool rod is connected to a fastening device, and the fastening device abuts against the blade; when the fastening device is loosened, the blade can rotate in the mounting hole.

2. The turning tool according to claim 1, characterized in that: A groove is provided in the knife rod along the axial direction, the groove is communicated with the mounting hole, and an inner wall of the groove is provided with an internal thread.

3. The turning tool according to claim 2, characterized in that: The fastening device is adapted to the groove, and the groove is used for allowing the fastening device to move along the axial direction of the knife rod.

4. The turning tool according to claim 2, characterized in that: The fastening device comprises a fastening screw, wherein the fastening screw is provided with an external thread, and the external thread is adapted to the internal thread.

5. The turning tool according to claim 1, characterized in that: It also includes a knife sleeve, the second end of the knife rod is inserted into the knife sleeve, and the knife sleeve is used to fix the knife rod.

6. The turning tool according to claim 1, characterized in that: The front angle of the blade ranges from 5 degrees to 9 degrees, the back angle of the blade ranges from 40 degrees to 50 degrees, and the inclination angle of the blade ranges from 1 degree to 3 degrees.

7. A clamping device, characterized in that: It comprises a chuck, a fixing block is mounted on the chuck, and a positioning structure is arranged near the fixing block; a clamping jaw is arranged circumferentially on the chuck, the positioning structure is used to position the flange, the clamping jaw is used to clamp the flange, and the flange is cut using the turning tool described in any one of claims 1 to 6.

8. The clamping device according to claim 7, characterized in that: The positioning structure comprises a rhombus pin and a cylindrical pin which are arranged oppositely on two sides of the chuck, the rhombus pin is inserted into the first positioning hole of the flange, and the cylindrical pin is inserted into the second positioning hole of the flange.

9. The clamping device according to claim 7, characterized in that: It also includes a main shaft, the end surface of the main shaft is provided with a base pad, the end of the base pad away from the main shaft is connected to a clamping claw base, and the clamping claw is provided on the clamping claw base.

10. The clamping device according to claim 9, characterized in that: The end surface of the main shaft is also provided with a chassis, and the chassis is connected to the chuck.

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