A chamfering tool holder for automobile gear

Abstract

The present invention discloses a car gear chamfering tool holder, including a horizontal machine tool, a three-jaw chuck for clamping gears, and a tooth profile cutting mechanism arranged on the slide rail of the horizontal machine tool, wherein the tooth profile cutting mechanism includes a plurality of base blocks arranged in a circumferential array along the gear, a sliding head is slidably connected to the base block, a fitting column is fixedly connected to the sliding head, a cutting head is arranged on the sliding head along the axis of the fitting column, and the cutting head fits the side of the gear with the fitting column to cut the edge of the gear. Specifically, it relates to the technical field of gear chamfering, and the gear is fitted with the fitting column, so that when the gear rotates with the three-jaw chuck, the gear continuously moves along the root and top of the gear, so as to keep the distance between the cutting head and the gear constant, and the edge of the gear is cut by the cutting head as the three-jaw chuck rotates, so as to avoid uneven chamfering size during processing.

Description

Technical Field

[0001] The invention relates to the technical field of gear chamfering, in particular to an automobile gear chamfering tool holder. Background Art

[0002] Gear chamfering is to improve the performance and appearance of the gear, and has the effect of reducing wear, noise and impact during meshing. Chamfering is a small chamfer. Gears with chamfering are suitable for automobile reduction gears.

[0003] According to patent number CN104889506A, published (announced) date: 2015-09-09, a chamfering tool holder for the tooth end of a gear of an automobile transmission is disclosed. The chamfering tool holder is directly mounted on a T-slot pad on a slide in a lathe, and includes a tool box inner body and a tool box outer body connected by a rotating shaft, and a rotation limiting screw is provided on the rotating shaft; a replaceable tool assembly consisting of a tool shaft adjustment pad, a tool shaft and a chamfering tool is provided in the tool box inner body, and a tool shaft locking screw for preventing the tool shaft from moving forward and backward is provided on the tool shaft of the tool assembly, and the chamfering tool is divided into two left and right pieces, and the blades of the two pieces are matched with the chamfer values ​​of the two sides of the gear of the transmission, and a spring is provided between the chamfering tool and the tool box inner body; a support plate for supporting the rotating shaft is provided on the tool box outer body, and a top column is provided below the support plate. The present invention is a symmetrical structure, a large support span, and a more stable and efficient gate structure. The chamfering tool is divided into two left and right pieces and the teeth are arranged in staggered teeth after assembly, so as to meet the processing requirements of the chamfering of the helical teeth of the gear of the automobile transmission.

[0004] In the prior art including the above-mentioned patents, the chamfering of gears includes tooth top chamfering, tooth end chamfering and tooth profile chamfering. When the gear tooth profile is chamfered, special equipment is used for chamfering the tooth profile for large-scale chamfering processing, while small-scale tooth profile chamfering is mostly carried out semi-manually or by lathe. However, there are inclined surfaces on the gear tooth profile, and uneven chamfering sizes are likely to occur during semi-manual or horizontal lathe processing, which will affect the performance of the gear. Summary of the invention

[0005] The purpose of the present invention is to provide a car gear chamfering tool holder, aiming to solve the problem that the chamfer size is uneven during semi-manual or horizontal lathe processing, which affects the performance of the gear.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a kind of automobile gear chamfering tool holder, comprising a horizontal machine tool, a three-jaw chuck for clamping gears, and a tooth profile cutting mechanism arranged on the slide rail of the horizontal machine tool, the tooth profile cutting mechanism comprising a plurality of base blocks arranged in a circular array along the gear, a sliding head being slidably connected to the base block, a fitting column being fixedly connected to the sliding head, a cutting head being arranged on the sliding head along the axis of the fitting column, the cutting head fitting the side surface of the gear along the fitting column to cut the edge of the gear.

[0007] Preferably, the cutting head is rotatably connected to a base slide seat provided on the sliding head, the cutting head comprises a bevel blade and a burr surface, and the cutting head is assembled at the following two stations:

[0008] First station: the bevel blade rotates with the gear to cut the edge;

[0009] Second station: the cutting head rotates to drive the burr surface toward the gear.

[0010] Preferably, a sliding sleeve is slidably connected to the base slide, the cutting head is rotatably connected to the sliding sleeve, and the sliding sleeve moves along the gear along with the chamfer of the bevel blade to switch the first workstation to the second workstation.

[0011] Preferably, a locking slider is movably arranged between the base slide and the sliding sleeve, a first spring is arranged between the locking slider and the sliding sleeve, and the locking slider is driven to be engaged in a locking groove provided on the cutting head.

[0012] Preferably, a second slide groove is provided on the base block, the sliding head is slidably connected to the second slide groove, a threaded column is threadedly connected to the second slide groove, and a second spring is provided between the threaded column and the sliding head.

[0013] Preferably, the cutting head is provided with a rotating shaft;

[0014] It also includes a linkage component, which includes an elastic frame covering the plurality of rotating shafts, and the elastic frame is driven to rotate to drive the plurality of rotating shafts to rotate together.

[0015] Preferably, the elastic frame is provided with an inclined portion, the inclined portion includes a high position and a low position, the low position is driven to fit the rotating coupling shaft, and drives the rotating coupling shaft to rotate as the elastic frame rotates.

[0016] Preferably, a diameter adjustment mechanism is further included, which includes an arc-shaped bar arranged between two base blocks, the base blocks are provided with an arc-shaped groove for the arc-shaped bar to slide, and a plurality of the arc-shaped bars are driven to slide along the arc-shaped groove to change the spacing between adjacent base blocks.

[0017] Preferably, the diameter adjustment mechanism further comprises a fixed frame, on which a sliding frame corresponding to the base block is arranged, and the base block is slidably connected to the sliding frame to move closer to or away from the gear.

[0018] Preferably, the burr surface comprises an arc surface symmetrically arranged along the center point of the bevel edge, and grindstones are respectively arranged at both ends of the arc surface.

[0019] In the above technical scheme, the present invention provides an automobile gear chamfering tool holder, which has the following beneficial effects: the gear is fitted by a fitting column, so that when the gear rotates with the three-jaw chuck, it continuously moves along the root and top of the gear, so as to keep the distance between the cutting head and the gear constant, and cut the edge of the gear through the cutting head as the three-jaw chuck rotates, thereby avoiding uneven chamfering size during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 An overall schematic diagram provided for an embodiment of the present invention;

[0022] Figure 2 An overall explosion diagram provided for an embodiment of the present invention;

[0023] Figure 3 An exploded schematic diagram of a linkage assembly provided in an embodiment of the present invention;

[0024] Figure 4 An exploded schematic diagram of a tooth profile cutting mechanism provided by an embodiment of the present invention;

[0025] Figure 5 for Figure 4 The enlarged schematic diagram at A in the middle;

[0026] Figure 6 An overall cross-sectional schematic diagram provided for an embodiment of the present invention;

[0027] Figure 7 for Figure 6 The enlarged schematic diagram of point B in the middle;

[0028] Figure 8 A cross-sectional schematic diagram of a tooth profile cutting mechanism provided by an embodiment of the present invention;

[0029] Fig. 9 for Figure 8 Enlarged schematic diagram at point C in the middle.

[0030] Description of reference numerals:

[0031] 1. Three-jaw chuck; 11. Mobile clamping block; 12. Gear; 2. Tooth profile cutting mechanism; 21. Base block; 211. Arc groove; 212. Threaded sleeve; 213. Second screw; 214. Second slide groove; 215. Movable groove; 22. Sliding head; 221. Fitting column; 222. Locking slider; 2221. First spring; 223. Base slide; 23. Cutting head; 230. Bevel blade; 231. Rotating shaft; 232. Arc surface; 233. Exhaust channel; 234. Locking groove; 24. Threaded column; 241. Second spring; 25. Sliding sleeve; 3. Diameter adjustment mechanism; 30. Arc strip; 31. Fixed frame; 311. Fixed sheet; 312. First slide groove; 32. Sliding frame; 4. Interlocking assembly; 41. Elastic frame; 411. Inclined portion; 412. Annular groove; 42. First screw. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0033] like Figure 1-9 As shown, an automobile gear chamfering tool holder includes a horizontal machine tool, a three-jaw chuck 1 for clamping a gear 12, and a tooth profile cutting mechanism 2 arranged on the slide rail of the horizontal machine tool. The tooth profile cutting mechanism 2 includes a plurality of base blocks 21 arranged in a circular array along the gear 12, a sliding head 22 is slidably connected to the base block 21, a fitting column 221 is fixedly connected to the sliding head 22, a cutting head 23 is arranged on the sliding head 22 along the axis of the fitting column 221, and the cutting head 23 fits the side of the gear 12 with the fitting column 221 to cut the edge of the gear 12.

[0034] Specifically, the three-jaw chuck 1 is provided with a movable clamping block 11, which clamps the gear 12 by the movable clamping block 11. When the gear 12 is chamfered, the gear 12 is passed through multiple base blocks 21 and clamped on the three-jaw chuck 1, and then the sliding head 22 slides along the base block 21 and makes the fitting column 221 fit the side of the gear 12. At the same time, the cutting head 23 fits the edge of the gear 12 with the sliding head 22, and then the three-jaw chuck 1 is driven to rotate on the horizontal machine tool. During rotation, the fitting column 221 continuously moves along the tooth root and tooth top of the gear 12, so that the cutting head 23 cuts the outer contour of the gear 12 to achieve chamfering as the tooth root and tooth top move, and the fitting column 221 limits the distance between the cutting head 23 and the gear 12 to keep the depth of the chamfer uniform when cutting the outer contour of the gear 12.

[0035] Furthermore, the structure in which the base block 21 is arranged on the slide rail of the horizontal machine tool can be a constructed profile frame, which fixes the base block 21, and the profile frame is symmetrically provided with screws, and the profile frame is fixed to the slide rail of the horizontal machine tool by rotating the screws; it can also be a fixing ring, which fixes the base block 21, and the fixing ring is provided with an electromagnet, and the profile frame is fixed to the slide rail of the horizontal machine tool by the electromagnet; or other structures known to technical personnel in this field are also possible.

[0036] In the above technical solution, the gear 12 is fitted by the fitting column 221, so that when the gear 12 rotates with the three-jaw chuck 1, it continuously moves along the root and top of the teeth of the gear 12, so as to keep a constant distance between the cutting head 23 and the gear 12, and cut the edge of the gear 12 through the cutting head 23 as the three-jaw chuck 1 rotates, thereby avoiding uneven chamfering size during processing.

[0037] As an embodiment provided by the present invention, the cutting head 23 is rotatably connected to the base slide 223 provided on the sliding head 22, and the cutting head 23 includes a bevel blade 230 and a burr surface. The cutting head 23 is assembled at the following two stations:

[0038] First station: the bevel blade 230 rotates with the gear 12 to cut the edge;

[0039] Second station: the cutting head 23 rotates to drive the burr surface toward the gear 12 .

[0040] Specifically, when chamfering is required, the cutting head 23 is rotated along the sliding head 22 and switched to the first station, and the bevel blade 230 on the cutting head 23 is directed toward the gear 12, so that when the gear 12 rotates, the bevel blade 230 cuts the edge of the gear 12 to achieve chamfering. After the chamfering is completed, burrs will exist at the chamfer of the gear 12. At this time, the cutting head 23 is rotated along the sliding head 22 and switched to the second station, so that the burr surface is directed toward the gear 12. At this time, the gear 12 rotates, and the burr surface will rub along the chamfer of the rotating gear 12 to remove the burrs on the gear 12. The chamfering and deburring steps are achieved during one clamping, which improves the accuracy while speeding up the production speed and reduces the impact of re-clamping on the accuracy.

[0041] When chamfering the gear 12, the gear 12 is clamped on the three-jaw chuck 1, and then the cutting head 23 is rotated along the sliding head 22 to switch to the first station, and the bevel blade 230 on the cutting head 23 is facing the gear 12. The sliding head 22 will slide along the base block 21 and make the fitting column 221 fit the side of the gear 12. At the same time, the cutting head 23 will fit the edge of the gear 12 with the sliding head 22, and rotate with the gear 12 so that the cutting head 23 will cut the outer contour of the gear 12 to achieve chamfering as the tooth root and tooth top move. After chamfering, the cutting head 23 is rotated along the sliding head 22 to switch to the second station, so that the burr surface faces the gear 12, and then the gear 12 continues to rotate, and the edge of the gear 12 is rubbed by the burr surface.

[0042] As an embodiment provided by the present invention, a sliding sleeve 25 is slidably connected to the base slide 223, and the cutting head 23 is rotatably connected to the sliding sleeve 25. The sliding sleeve 25 moves along the gear 12 with the chamfering of the bevel blade 230 to switch the first station to the second station.

[0043] Specifically, a rotating shaft is provided on the cutting head 23, and the rotating shaft is rotatably connected to the base slide 223 on the sliding sleeve 25. The sliding sleeve 25 can slide along the base slide 223. When the cutting head 23 is in the first working position, the gear 12 is chamfered by the bevel blade 230. When the gear 12 is chamfered, the sliding sleeve 25 will slide along the base slide 223 with the depth of the cutting, and when the chamfering is completed as it slides gradually, the first working position is switched to the second working position to realize automatic switching of the working positions.

[0044] When chamfering the gear 12, the gear 12 is clamped on the three-jaw chuck 1, and then the cutting head 23 is rotated along the sliding head 22 to switch to the first station, and the bevel blade 230 on the cutting head 23 is facing the gear 12, and the sliding head 22 will slide along the base block 21 and make the fitting column 221 fit the side of the gear 12. At the same time, the cutting head 23 will fit the edge of the gear 12 with the sliding head 22, and rotate with the gear 12 so that the cutting head 23 will cut the outer contour of the gear 12 to achieve chamfering as the tooth root and tooth top move. When chamfering is continuously performed, the sliding sleeve 25 will slide along the base slide 223 with the depth of cutting, and as it gradually slides, when the chamfering is completed, the cutting head 23 is rotated along the sliding head 22 to switch to the second station, so that the burr surface faces the gear 12, and then the gear 12 continues to rotate, and the edge of the gear 12 is rubbed by the burr surface.

[0045] As an embodiment provided by the present invention, a locking slider 222 is movably arranged between the base slide 223 and the sliding sleeve 25, a first spring 2221 is arranged between the locking slider 222 and the sliding sleeve 25, and the locking slider 222 is driven to be clamped in a locking groove 234 provided on the cutting head 23.

[0046] Specifically, a through hole is provided on the sliding sleeve 25, and the locking slider 222 is slidably connected to the through hole and extends out of the through hole. The end of the locking slider 222 is an arc head, and the locking groove 234 is an arc groove. When the cutting head 23 fits the gear 12, the first spring 2221 will be compressed so that the locking slider 222 passes through the sliding sleeve 25 and fits the locking groove 234 to keep the cutting head 23 in the first position. When the chamfer on the gear 12 is cut, the first spring 2221 will extend with the movement of the sliding sleeve 25 to reduce the push on the locking slider 222, so that when the gear 12 rotates, it will drive the cutting head 23 to break free from the arc locking slider 222 and decouple the locking groove 234, so that the cutting head 23 can be switched to the second position, so that the burr surface faces the gear 12.

[0047] When chamfering the gear 12, the gear 12 is clamped on the three-jaw chuck 1, and then the cutting head 23 is switched to the first working position along the rotating sliding head 22, and the bevel edge 230 on the cutting head 23 is directed toward the gear 12. At this time, the first spring 2221 will be compressed so that the locking slider 222 passes through the sliding sleeve 25 and fits into the locking groove 234. The sliding head 22 will slide along the base block 21 and make the fitting column 221 fit the side of the gear 12. At the same time, the cutting head 23 will fit into the edge of the gear 12 with the sliding head 22, and rotate with the gear 12 so that the cutting head 23 will move along with the movement of the tooth root and the tooth top. The outer contour of the gear 12 is cut dynamically to achieve chamfering. When the chamfering is continuously performed, the sliding sleeve 25 slides along the base slide 223 according to the cutting depth, and as the chamfering is gradually completed, the first spring 2221 extends with the movement of the sliding sleeve 25 to reduce the push on the locking slider 222, so that when the gear 12 rotates, the cutting head 23 is driven to break free from the arc locking slider 222 and the locking groove 234 is decoupled, so that the cutting head 23 is switched to the second station, with the burr surface facing the gear 12, and then the gear 12 continues to rotate, rubbing the edge of the gear 12 through the burr surface.

[0048] As an embodiment provided by the present invention, a second slide groove 214 is opened on the base block 21, and the sliding head 22 is slidably connected to the second slide groove 214. A threaded column 24 is threadedly connected to the second slide groove 214, and a second spring 241 is arranged between the threaded column 24 and the sliding head 22.

[0049] Specifically, when it is necessary to adjust the depth of the chamfer, rotate the threaded column 24 to move the threaded column 24 along the second slide groove 214, thereby compressing or stretching the second spring 241 to change the compression degree of the second spring 241 when the cutting head 23 is in contact with the gear 12, so as to extend or shorten the switching time between the two workstations, thereby changing the depth of the chamfer. The diameter of the second spring 241 is smaller than that of the first spring 2221, so that the first spring 2221 will rebound first during chamfering cutting to facilitate the switching of workstations.

[0050] According to the required chamfering depth, the threaded column 24 is rotated to move the threaded column 24 along the second slide groove 214, thereby compressing or stretching the second spring 241. When the gear 12 is chamfered, the gear 12 is clamped on the three-jaw chuck 1, and then the cutting head 23 is rotated along the sliding head 22 to switch to the first working position, and the bevel blade 230 on the cutting head 23 is directed toward the gear 12. At this time, the first spring 2221 will be compressed so that the locking slider 222 passes through the sliding sleeve 25 and fits the locking groove 234. The sliding head 22 will slide along the base block 21 and make the fitting column 221 fit the side of the gear 12. At the same time, the cutting head 23 will fit the edge of the gear 12 with the sliding head 22 , and rotates with the gear 12 so that the cutting head 23 will cut the outer contour of the gear 12 to achieve chamfering as the tooth root and tooth top move. When chamfering is continuously performed, the sliding sleeve 25 will slide along the base slide 223 with the cutting depth, and as the chamfering is gradually completed, the first spring 2221 will extend with the movement of the sliding sleeve 25 to reduce the push on the locking slider 222, so that when the gear 12 rotates, it will drive the cutting head 23 to break free from the arc locking slider 222 and the locking groove 234 to decouple, so that the cutting head 23 is switched to the second station, with the burr surface facing the gear 12, and then the gear 12 continues to rotate, rubbing the edge of the gear 12 through the burr surface.

[0051] As an embodiment provided by the present invention, a rotary shaft 231 is provided on the cutting head 23;

[0052] The interlocking assembly 4 includes an elastic frame 41 covering the plurality of rotating shafts 231 . The elastic frame 41 is driven to rotate so as to drive the plurality of rotating shafts 231 to rotate together.

[0053] Specifically, a movable groove 215 is opened on the base block 21, and the movable groove 215 allows the rotating shaft 231 to extend out of the base block 21. When the deburring step is completed and the gear 12 needs to be replaced for re-chamfering, the elastic frame 41 is rotated to rotate multiple rotating shafts 231 together to rotate the cutting head 23 to switch to the first working position.

[0054] According to the required chamfering depth, the threaded column 24 is rotated to make the threaded column 24 move along the second sliding groove 214, thereby compressing or stretching the second spring 241. When chamfering the gear 12, the gear 12 is clamped on the three-jaw chuck 1, and then the cutting head 23 is rotated along the sliding head 22 to switch to the first working position, and the bevel blade 230 on the cutting head 23 is directed toward the gear 12. At this time, the first spring 2221 will be compressed so that the locking slider 222 passes through the sliding sleeve 25 to fit into the locking groove 234, the sliding head 22 will slide along the base block 21 and make the fitting column 221 fit into the side of the gear 12, and at the same time, the cutting head 23 will fit into the edge of the gear 12 with the sliding head 22, and rotate with the gear 12 so that the cutting head 23 will move the tooth root and the tooth top to the gear 12. The outer contour of the wheel 12 is cut to achieve chamfering. When the chamfering is continuously performed, the sliding sleeve 25 will slide along the base slide 223 according to the cutting depth, and as the chamfering is gradually completed, the first spring 2221 will extend with the movement of the sliding sleeve 25 to reduce the push on the locking slider 222, so that when the gear 12 rotates, it will drive the cutting head 23 to break free from the arc locking slider 222 and the locking groove 234 to decouple, so that the cutting head 23 can be switched to the second station, with the burr surface facing the gear 12, and then the gear 12 continues to rotate, and the burr surface rubs the edge of the gear 12, and the burr removal is completed. When the gear 12 is replaced, the elastic frame 41 is rotated to rotate multiple rotating shafts 231 together to rotate the cutting head 23 to the first station for chamfering.

[0055] As an embodiment provided by the present invention, an inclined portion 411 is provided on the elastic frame 41 , and the inclined portion 411 includes a high position and a low position, and the low position is driven to fit the rotating coupling 231 , and drives the rotating coupling 231 to rotate as the elastic frame 41 rotates.

[0056] Specifically, a circular groove 412 is provided on the lower position of the inclined portion 411, and the elastic frame 41 can move along the axis of the three-jaw chuck 1. When the cutting head 23 is rotated and switched to the first working position, the elastic frame 41 is first moved along the axis of the three-jaw chuck 1 to move the circular groove 412 onto the rotating shaft 231, and then the elastic frame 41 is rotated to make the lower position of the inclined portion 411 move along the rotating shaft 231 for coupling, and drive the rotating shaft 231 to rotate, thereby rotating and switching the cutting head 23 to the first working position. When not in use, the high position is turned toward the rotating shaft 231 and locked to prevent the elastic frame 41 from affecting normal use.

[0057] According to the required chamfering depth, the threaded column 24 is rotated to make the threaded column 24 move along the second sliding groove 214, thereby compressing or stretching the second spring 241. When chamfering the gear 12, the gear 12 is clamped on the three-jaw chuck 1, and then the cutting head 23 is rotated along the sliding head 22 to switch to the first working position, and the bevel blade 230 on the cutting head 23 is directed toward the gear 12. At this time, the first spring 2221 will be compressed so that the locking slider 222 passes through the sliding sleeve 25 to fit the locking groove 234, the sliding head 22 will slide along the base block 21 and make the fitting column 221 fit the side of the gear 12, and at the same time, the cutting head 23 will fit the edge of the gear 12 with the sliding head 22, and rotate with the gear 12 so that the cutting head 23 will cut the outer contour of the gear 12 to achieve chamfering as the tooth root and tooth top move. When chamfering is continuously performed, the sliding sleeve 25 will slide along the base slide 223 with the depth of cutting, and as the sliding gradually slides, when the chamfering is completed, the first spring 2221 will extend with the movement of the sliding sleeve 25 to reduce the push on the locking slider 222, so that when the gear 12 rotates, it will drive the cutting head 23 to break free from the arc locking slider 222 and decouple the locking groove 234, so that the cutting head 23 can be switched to the second station, with the burr surface facing the gear 12, and then the gear 12 continues to rotate, and the burr surface rubs the edge of the gear 12 to complete the deburring. When replacing the gear 12, press the elastic frame 41 to move the annular groove 412 onto the rotating shaft 231, and then rotate the elastic frame 41 to rotate multiple rotating shafts 231 to rotate the cutting head 23 to the first station for chamfering.

[0058] As an embodiment provided by the present invention, a diameter adjustment mechanism 3 is also included, which includes an arc-shaped bar 30 arranged between two base blocks 21, and an arc-shaped groove 211 is opened on the base block 21 for the arc-shaped bar 30 to slide, and multiple arc-shaped bars 30 are driven to slide along the arc-shaped groove 211 to change the distance between adjacent base blocks 21;

[0059] The diameter adjustment mechanism 3 further includes a fixed frame 31 , on which a sliding frame 32 corresponding to the base block 21 is disposed. The base block 21 is slidably connected to the sliding frame 32 to move closer to or away from the gear 12 .

[0060] Specifically, when it is necessary to adjust the spacing between the base blocks 21, one of the base blocks 21 is moved along the sliding frame 32. At this time, as one base block 21 moves, the adjacent base block 21 will move along the corresponding sliding frame 32 as it slides between the arc strip 30 and the arc groove 211, thereby driving the adjacent base blocks 21 to move and adjust the spacing between the multiple base blocks 21. A threaded sleeve 212 is provided on the base block 21, and a second screw 213 is threadedly connected to the threaded sleeve 212. The second screw 213 is rotated to fit the sliding frame 32 to lock the base block 21 and the fixed frame 31. A fixing plate 311 is provided on the fixed frame 31, and a first sliding groove 312 is opened on the fixing plate 311. A first screw 42 is threadedly connected to the elastic frame 41, and the first screw 42 is slidably connected in the first sliding groove 312, so that the elastic frame 41 is fixed to the fixing plate 311 by rotating the first screw 42.

[0061] First, the base block 21 is adjusted according to the diameter of the gear 12, and then the threaded column 24 is rotated according to the required chamfering depth to make the threaded column 24 move along the second slide groove 214, thereby compressing or stretching the second spring 241. When chamfering the gear 12, the gear 12 is clamped on the three-jaw chuck 1, and then the cutting head 23 is rotated along the sliding head 22 to switch to the first working position, and the bevel blade 230 on the cutting head 23 is directed toward the gear 12. At this time, the first spring 2221 will be compressed so that the locking slider 222 passes through the sliding sleeve 25 to fit the locking groove 234, and the sliding head 22 will slide along the base block 21 and make the fitting column 221 fit the side of the gear 12. At the same time, the cutting head 23 will fit the edge of the gear 12 with the sliding head 22, and rotate with the gear 12 so that the cutting head 23 will move the outer wheel of the gear 12 with the movement of the tooth root and the tooth top. The profile is cut to achieve chamfering. When chamfering is continuously performed, the sliding sleeve 25 will slide along the base slide 223 as the cutting depth increases, and as the sliding gradually slides, when the chamfering is completed, the first spring 2221 will extend with the movement of the sliding sleeve 25 to reduce the push on the locking slider 222, so that when the gear 12 rotates, it will drive the cutting head 23 to break free from the arc locking slider 222 and the locking groove 234 to decouple, so that the cutting head 23 can be switched to the second station, so that the burr surface faces the gear 12, and then the gear 12 continues to rotate, and the burr surface rubs the edge of the gear 12 to complete the deburring. When replacing the gear 12, the elastic frame 41 is pressed to move the annular groove 412 onto the rotating shaft 231, and then the elastic frame 41 is rotated to rotate multiple rotating shafts 231 to rotate the cutting head 23 to the first station for chamfering.

[0062] As the best embodiment provided by the present invention, the burr surface includes an arc surface 232 symmetrically arranged along the center point of the bevel edge 230 , and grindstones are respectively arranged at both ends of the arc surface 232 .

[0063] Specifically, the burr surface has an angle between the beveled edges 230 of 20°~70°, a recessed surface is provided between the two arc surfaces 232, the diameter of the recessed surface is larger than the arc surface 232, an exhaust channel 233 is provided on the recessed surface, and a suction groove fixedly connected to the exhaust unit (the exhaust unit may be a metal debris collector) is provided on the sliding sleeve 25. When the cutting head 23 is switched to the second station, the exhaust channel 233 on the cutting head 23 will overlap with the suction groove as it rotates, so as to exhaust the debris rubbed out by the grindstone on the arc surface 232 through the exhaust unit to avoid secondary friction of the debris on the arc surface 232.

[0064] First, the base block 21 is adjusted according to the diameter of the gear 12, and then the threaded column 24 is rotated according to the required chamfering depth to make the threaded column 24 move along the second sliding groove 214, thereby compressing or stretching the second spring 241. When chamfering the gear 12, the gear 12 is clamped on the three-jaw chuck 1, and then the cutting head 23 is rotated along the sliding head 22 to switch to the first working position, and the bevel blade 230 on the cutting head 23 is directed toward the gear 12. At this time, the first spring 2221 will be compressed so that the locking slider 222 passes through the sliding sleeve 25 to fit the locking groove 234, the sliding head 22 will slide along the base block 21 and make the fitting column 221 fit the side of the gear 12, and at the same time, the cutting head 23 will fit the edge of the gear 12 with the sliding head 22, and rotate with the gear 12 so that the cutting head 23 will cut the outer contour of the gear 12 to achieve chamfering as the tooth root and tooth top move, and when chamfering is continuously performed, the sliding sleeve 25 will move along the cutting The first spring 2221 will extend along the movement of the sliding sleeve 25 to reduce the push on the locking slider 222, so that when the gear 12 rotates, the cutting head 23 will be driven to break free from the arc locking slider 222 and the locking groove 234 to decouple, so that the cutting head 23 can be switched to the second station. At this time, the exhaust channel 233 on the cutting head 23 will coincide with the suction groove as it rotates, so that the burr surface faces the gear 12. Then the gear 12 continues to rotate, and the grinding stones on the two arc surfaces 232 on the burr surface rub the edge of the gear 12, and the generated debris will be sucked by the exhaust unit to complete the deburring. When replacing the gear 12, the elastic frame 41 is pressed to move the annular groove 412 on the rotating shaft 231. Then the elastic frame 41 is rotated to make multiple rotating shafts 231 rotate together to rotate the cutting head 23 to switch to the first station for chamfering.

[0065] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A tool holder for chamfering automobile gears, comprising a horizontal machine tool, a three-jaw chuck (1) for clamping a gear (12), characterized in that: It also includes a tooth profile cutting mechanism (2) arranged on the slide rail of the horizontal machine tool, the tooth profile cutting mechanism (2) including a plurality of base blocks (21) arranged in a circumferential array along the gear (12), a sliding head (22) being slidably connected to the base block (21), a fitting column (221) being fixedly connected to the sliding head (22), a cutting head (23) being arranged on the sliding head (22) along the axis of the fitting column (221), the cutting head (23) fitting against the side surface of the gear (12) along the fitting column (221) to cut the edge of the gear (12); The cutting head (23) is rotatably connected to a base slide (223) provided on the sliding head (22), the cutting head (23) comprises a bevel blade (230) and a burr surface, and the cutting head (23) is assembled at the following two stations: First workstation: the bevel blade (230) rotates with the gear (12) to cut the edge; Second workstation: the cutting head (23) rotates to drive the burr surface toward the gear (12); A sliding sleeve (25) is slidably connected to the base slide (223), the cutting head (23) is rotatably connected to the sliding sleeve (25), and the sliding sleeve (25) moves along the gear (12) along with the chamfering of the bevel blade (230) to switch the first workstation to the second workstation; A locking slider (222) is movably arranged between the base slide seat (223) and the sliding sleeve (25), a first spring (2221) is arranged between the locking slider (222) and the sliding sleeve (25), and the locking slider (222) is driven to engage in a locking groove (234) provided on the cutting head (23).

2. The automobile gear chamfering tool holder according to claim 1, characterized in that: The base block (21) is provided with a second slide groove (214), the sliding head (22) is slidably connected to the second slide groove (214), a threaded column (24) is threadedly connected to the second slide groove (214), and a second spring (241) is provided between the threaded column (24) and the sliding head (22).

3. The automobile gear chamfering tool holder according to claim 1, characterized in that: The cutting head (23) is provided with a rotating shaft (231); It also includes a linkage assembly (4), which includes an elastic frame (41) that covers the plurality of rotating shafts (231), and the elastic frame (41) is driven to rotate so as to drive the plurality of rotating shafts (231) to rotate together.

4. The automobile gear chamfering tool holder according to claim 3, characterized in that: The elastic frame (41) is provided with an inclined portion (411), the inclined portion (411) comprising a high position and a low position, the low position being driven to fit the rotary joint shaft (231) and driving the rotary joint shaft (231) to rotate as the elastic frame (41) rotates.

5. The automobile gear chamfering tool holder according to claim 1, characterized in that: It also comprises a diameter adjustment mechanism (3), comprising an arc-shaped bar (30) arranged between two base blocks (21), the base block (21) being provided with an arc-shaped groove (211) for the arc-shaped bar (30) to slide, and a plurality of the arc-shaped bars (30) being driven to slide along the arc-shaped groove (211) to change the spacing between adjacent base blocks (21).

6. The automobile gear chamfering tool holder according to claim 5, characterized in that: The diameter adjustment mechanism (3) further comprises a fixed frame (31), on which a sliding frame (32) corresponding one to one with the base block (21) is arranged, and the base block (21) is slidably connected to the sliding frame (32) to move closer to or farther from the gear (12).

7. The automobile gear chamfering tool holder according to claim 1, characterized in that: The burr surface comprises an arc surface (232) symmetrically arranged along the center point of the bevel edge (230), and grindstones are respectively arranged at both ends of the arc surface (232).

Images