CN114769743A

CN114769743A - Clamping tool for bevel gear machining

Info

Publication number: CN114769743A
Application number: CN202210451815.6A
Authority: CN
Inventors: 杨尚岭; 李进
Original assignee: Nanjing Qunwei Precision Machinery Manufacturing Co ltd
Current assignee: Nanjing Qunwei Precision Machinery Manufacturing Co ltd
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-07-22

Abstract

The utility model relates to a tight frock of helical gear processing clamp relates to the field of gear machining technique, and it includes the base, is provided with the location clamping jaw that is used for advancing line location to the gear blank on the base, slides on the base and wears to be equipped with the location axle, is provided with the drive assembly who is used for controlling location axle and removes on the base, fixes a position epaxial control assembly who is provided with control location clamping jaw and removes, and the gear blank cover is established at the location epaxially, and fixes a position epaxial being provided with and being used for compressing tightly the subassembly that compresses tightly on the base with the gear blank. This application has the effect that improves the machining precision of helical gear.

Description

Clamping tool for bevel gear machining

Technical Field

The application relates to the field of gear machining technology, in particular to a clamping tool for machining a bevel gear.

Background

A gear is a common component that is often used in mechanical transmissions. The helical gear has the characteristics of stable transmission, small impact, vibration and noise and the like, so the helical gear is widely used in high-speed and heavy-load occasions.

As shown in fig. 1 and 2, the helical gear 1 includes a gear blank 11, the gear blank 11 is a solid of revolution, and one end of the gear blank 11 along its own axis direction is provided with a mounting groove 12, one end of the gear blank 11 departing from the mounting groove 12 is integrally formed with a first convex ring 13, and a diameter of the first convex ring 13 is smaller than a diameter of a root circle of the gear blank 11, one end of the first convex ring 13 departing from the gear blank 11 is integrally formed with a second convex ring 14, and a diameter of the second convex ring 14 is smaller than a diameter of the first convex ring 13, and the gear blank 11 is coaxially provided with a central hole 15 penetrating through the gear blank 11, the first convex ring 13 and the second convex ring 14 along its own axis direction. A process boss 16 is arranged on one side, away from the gear blank 11, of the first convex ring 13, and a plurality of process grooves 17 are formed in the process boss 16.

The helical gear is usually machined by a gear hobbing machine, the helical gear needs to be fixed by a clamp in the machining process, and when the shape of the helical gear is complex, the helical gear cannot be stably clamped by the common clamp, so that the helical gear can shake and shift in the machining process, and the machining precision of the helical gear is seriously influenced.

Disclosure of Invention

In order to improve the machining precision of helical gear, this application provides a tight frock of helical gear processing clamp.

The application provides a tight frock of helical gear processing clamp adopts following technical scheme:

the utility model provides a tight frock of helical gear processing clamp, includes the base, be provided with the location clamping jaw that is used for advancing line location to the gear blank on the base, slide on the base and wear to be equipped with the location axle, be provided with on the base and be used for control the drive assembly that the location axle removed, the epaxial control that is provided with of location the control assembly that the location clamping jaw removed, gear blank cover is established epaxially in the location, just the epaxial dismantlement of location is provided with and is used for compressing tightly the gear blank the subassembly that compresses tightly on the base.

Through adopting above-mentioned technical scheme, the operator places the gear blank on the base for the locating shaft is worn to establish in the centre bore of gear blank, then the operator will compress tightly the unit mount and be epaxial in the location, the operator drives each clamping jaw through control assembly and removes and fix a position the gear blank, compress tightly the gear blank on the base through compressing tightly the subassembly again, realize the rigidity of gear blank on the base, be favorable to improving the installation stability of gear blank on the base, and then improve the machining precision of gear blank.

Optionally, the control assembly includes a sleeve, a cavity is provided in the base, the positioning shaft slides along the axis direction of the positioning shaft and penetrates through the base, the positioning shaft is partially located in the cavity, the sleeve is fixedly sleeved on the positioning shaft, a plurality of linkage rods are hinged on the sleeve, each linkage rod is hinged with a sliding block, sliding grooves corresponding to the sliding blocks one by one are formed in the base, and each sliding block is arranged in the corresponding sliding groove in a sliding manner;

the positioning clamping jaw comprises a plurality of positioning blocks, the positioning blocks correspond to the sliding blocks one to one, and the positioning blocks are fixedly connected to the corresponding sliding blocks.

By adopting the technical scheme, an operator places the gear blank on the base, the gear blank is enabled to be abutted against each positioning block, the operator controls the positioning shaft to move through the driving assembly, then the sleeve is driven to move, each linkage rod is enabled to turn over, the linkage rod turns over to drive the corresponding sliding block to slide in the sliding groove, each positioning block is enabled to be close to each other and clamp the gear blank, meanwhile, the radial position of the gear blank is also positioned, and the gear blank machining precision is improved.

Optionally, the sleeve slides along self axis direction and is equipped with the shift ring in the cover, the sleeve both ends all are provided with the spacing ring, the cover is equipped with and is used for promoting each on the sleeve the reset spring of locating piece clamp gear blank.

Through adopting above-mentioned technical scheme, the operator is through setting up reset spring for each locating piece folds each other and fixes a position the back to the gear blank, and the location axle still can have certain removal allowance, makes things convenient for the operator to drive through the location axle and compresses tightly the subassembly fixed gear blank.

Optionally, the driving assembly comprises a bevel gear disc rotatably connected to the base, a threaded cylinder is arranged on the bevel gear disc, one end of the positioning shaft, which deviates from the inserted rod, is inserted into the threaded cylinder, the positioning column is in threaded connection with the threaded cylinder, a plurality of bevel gears are rotatably connected to the base, and the bevel gears are all meshed with the bevel gear disc.

By adopting the technical scheme, an operator drives the bevel gear disc to rotate by rotating any one bevel gear, and the bevel gear disc rotates to drive the positioning shaft to move on the base along the axis direction of the positioning shaft due to the threaded connection of the threaded cylinder and the positioning shaft, so that the operator can conveniently control each positioning block to be close to or away from each other, and the operator can conveniently position the gear blank.

Optionally, a driving shaft for controlling the rotation of each bevel gear is coaxially arranged on each bevel gear, a rotation stopping ring is arranged on the base, a plurality of fastening bolts are connected to the rotation stopping ring in a threaded manner, each fastening bolt is rotatably connected to the base, a plurality of rotation stopping grooves are formed in the rotation stopping ring, the rotation stopping grooves correspond to the driving shafts one to one, and anti-slip pads for limiting the rotation of the driving shafts are arranged in the rotation stopping grooves.

Through adopting above-mentioned technical scheme, the operator supports tight bolt through rotating and drives the stop swivel and remove towards each drive shaft direction for the stop swivel all compresses tightly each slipmat in the drive shaft that corresponds, and then restricts each drive shaft and takes place to rotate, is favorable to reducing the not hard up condition of gear blank.

Optionally, the compressing assembly comprises an installation barrel, an insertion rod is arranged on the end face of the positioning shaft penetrating into the gear blank, the installation barrel is slidably sleeved on the insertion rod and abutted against the end face of the positioning shaft, a limiting unit used for limiting the installation barrel is arranged on the insertion rod, and a plurality of pressing plates used for pressing the gear blank onto the base are arranged on the installation barrel.

Through adopting above-mentioned technical scheme, the operator fixes an installation section of thick bamboo on the inserted bar through spacing unit earlier, and the axial position of a restriction installation section of thick bamboo on the inserted bar drives the location axle through drive assembly and removes, and then drives each clamp plate and remove and compress tightly the gear blank on the base towards the base, realizes the rigidity of gear blank on the base, makes things convenient for the operator to process the gear blank.

Optionally, a plurality of stoppers for abutting against the inner ring wall of the mounting groove are arranged on the mounting cylinder, a first connecting rod and a second connecting rod are arranged between each stopper and the mounting cylinder, one end of each of the first connecting rod and the second connecting rod is hinged on the mounting cylinder, the other end of each of the first connecting rod and the second connecting rod is hinged on the corresponding stopper, the first connecting rod and the second connecting rod on the same stopper are parallel to each other, the distance between the hinged axes at the two ends of the first connecting rod is the same as the distance between the hinged axes at the two ends of the second connecting rod, a retaining ring for abutting against the groove bottom wall of the mounting groove is further arranged on the mounting cylinder, the retaining ring is arranged on the mounting cylinder in a sliding manner along the axis direction of the retaining ring, and a third connecting rod is arranged at the position corresponding to each stopper, and one end of each third connecting rod is hinged to the corresponding limiting block, and the other end of each third connecting rod is hinged to the retaining ring.

Through adopting the above-mentioned technical scheme, when the operator will install the section of thick bamboo and fix on the inserted bar, each stopper all is located gear blank's mounting groove, the operator drives the location axle through drive assembly and moves towards the base direction, and then when driving and keep off the ring and move towards the base direction, this in-process, keep off the ring gradually with the tank bottom wall butt of mounting groove, and then make each third connecting rod upset, and drive each stopper and keep away from each other, all compress tightly on the lateral wall of mounting groove until each stopper, realize the rigidity of gear blank and base, improve the installation stability of gear blank on the base. Through setting up first connecting rod and second connecting rod for each stopper is at the upset in-process, and its angle does not change, is favorable to improving the butt effect of each stopper to the mounting groove inner wall.

Optionally, a plurality of mount pads of fixedly connected with on the installation section of thick bamboo, the mount pad with the clamp plate one-to-one, each the equal fixed connection of clamp plate is corresponding on the mount pad, keep off the ring and correspond each the mount pad position all is provided with the guide post, each slide on the guide post and run through the correspondence the mount pad, and each on the guide post keep off the ring with it is used for promoting all to overlap between the mount pad keep off the ring and keep away from the top of mount pad pushes away the spring.

Through adopting above-mentioned technical scheme, keep off the ring when not receiving exogenic action, the top pushes away that the spring promotes to keep off the ring and keeps away from the mount pad, and then makes the upset of third connecting rod to drive each stopper and be close to each other, when reducing the operator on the inserted bar fixed mounting section of thick bamboo, the stopper removes at will, influences the condition that the operator inserts each stopper in the mounting groove, is favorable to making things convenient for an operator on the inserted bar fixed mounting section of thick bamboo.

Optionally, the limiting unit includes an insertion block, the insertion block is slidably disposed on the mounting barrel, a limiting plate for limiting a distance that the insertion block is inserted into the mounting barrel is disposed on the insertion block, the limiting plate abuts against the mounting barrel, a slot is formed in the insertion rod corresponding to the insertion block, and the insertion block is inserted into the slot;

the inserted bar is kept away from set up on the terminal surface of location axle with the holding tank of slot intercommunication, follow in the holding tank the inserted bar axis direction slides and is provided with a location section of thick bamboo, the constant head tank has been seted up on the inserted bar, a location section of thick bamboo joint is in the constant head tank, a location section of thick bamboo deviates from the one end of location axle is rotated and is connected with the regulating block, regulating block threaded connection is in the holding tank.

Through adopting above-mentioned technical scheme, the operator establishes installation section of thick bamboo cover on the inserted bar, then the operator slides the inserted block and pegs graft on installation section of thick bamboo, and make the inserted block penetrate the slot in, until the stopper butt is on installation section of thick bamboo, the operator drives a location section of thick bamboo through twisting the regulating block again and removes towards the inserted block direction, make a location section of thick bamboo peg graft at the constant head tank, and then restrict the inserted block in the slot, through the relative displacement between a inserted block restriction installation section of thick bamboo and the inserted bar, realize the quick installation between installation section of thick bamboo and the inserted bar

Optionally, the inserted block is provided with two, the installation section of thick bamboo corresponds two the position of inserted block all is provided with the mounting panel, two all be provided with on the mounting panel and be used for promoting the inserted block inserts and corresponds the spacing spring of slot, two one side that the inserted block inserted the slot all is provided with first inclined plane, two the first inclined plane is kept away from the slope of one side back of the body of regulating block, the lower extreme of location section of thick bamboo still is provided with the ejector pad, the ejector pad corresponds two the second inclined plane that first inclined plane position all was provided with the adaptation.

Through adopting above-mentioned technical scheme, set up the ejector pad in the holding tank, when operator antiport regulating block, the location section of thick bamboo drives the ejector pad and removes towards keeping away from location axle direction, then remove the spacing effect of a location section of thick bamboo to two inserted blocks, a location section of thick bamboo continues to remove towards keeping away from location axle direction, make two second inclined planes on the ejector pad and the first inclined plane butt that corresponds, a location section of thick bamboo continues to remove then to drive the ejector pad and promote two inserted block roll-off slots, remove the position limited effect of an installation section of thick bamboo and inserted bar, make things convenient for the operator to dismantle an installation section of thick bamboo from the inserted bar, and made things convenient for the gear blank to dismantle.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the gear blank is positioned and pre-fixed through the positioning block, and is further fixed through the matching of the pressing plate and the limiting block, so that the mounting stability of the gear blank on the base is improved, and the machining precision of the gear blank is further improved;

2. the operator drives a positioning barrel and a push block to move along the axis direction of the installation barrel through aiming at the adjusting block, so that the operator can conveniently install or dismantle the installation barrel on the inserted rod, and the operator can conveniently install and dismantle the gear blank on the base.

Drawings

Fig. 1 is an overall structural diagram of the related art.

FIG. 2 is a schematic view of a structure for embodying a process boss and a process groove.

Fig. 3 is a schematic overall structure diagram of an embodiment of the present application.

FIG. 4 is a cross-sectional view of an embodiment of the present application for embodying a control assembly.

Fig. 5 is a schematic structural diagram for embodying a driving assembly according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram for embodying a hold-down assembly according to an embodiment of the present application.

Fig. 7 is an enlarged schematic view of a portion a in fig. 4.

Description of the reference numerals: 1. a helical gear; 11. a gear blank; 12. mounting grooves; 13. a first convex ring; 14. a second convex ring; 15. a central bore; 16. a process boss; 17. a process tank; 2. a base; 21. positioning the shaft; 3. a drive assembly; 31. a conical fluted disc; 32. a through hole; 33. a housing; 34. a chamber; 35. a bevel gear; 36. a drive shaft; 37. a rotation stopping ring; 371. a rotation stopping groove; 372. a non-slip mat; 38. tightly abutting against the bolt; 39. a threaded barrel; 4. a control component; 41. a sleeve; 42. a cavity; 43. a moving ring; 44. a limiting ring; 45. a return spring; 46. a linkage rod; 47. a slider; 48. a chute; 49. a clamping jaw; 491. positioning blocks; 5. a compression assembly; 51. mounting the cylinder; 52. inserting a rod; 53. a mounting seat; 54. pressing a plate; 6. a limiting unit; 61. inserting a block; 62. a sliding hole; 63. a limiting plate; 64. mounting a plate; 65. a limiting spring; 7. a slot; 71. accommodating grooves; 72. a positioning cylinder; 73. positioning a groove; 74. an adjusting block; 75. a first inclined plane; 76. a connecting rod; 77. a push block; 78. a wing plate; 79. a second inclined surface; 8. a limiting block; 81. a first link; 82. a second link; 83. a first rotating shaft; 84. a second rotating shaft; 85. a third link; 86. a baffle ring; 87. a guide post; 88. pushing a spring; 89. and (5) blocking the ring.

Detailed Description

The present application is described in further detail below with reference to figures 3-7.

The embodiment of the application discloses tight frock of helical gear processing clamp. As shown in fig. 3, the bevel gear machining and clamping tool comprises a cylindrical base 2, a positioning shaft 21 for performing preliminary positioning with a gear blank 11 is coaxially slidably arranged on the base 2, the positioning shaft 21 is arranged in a central hole 15 of the gear blank 11 in a penetrating manner, and a driving assembly 3 for controlling the positioning shaft 21 to move along the axis direction of the driving assembly is arranged on one end face of the base 2. One side of base 2, which faces away from driving assembly 3, is provided with a positioning clamping jaw 49 for positioning gear blank 11, and positioning shaft 21 is provided with a control assembly 4 for controlling positioning clamping jaw 49 to position gear blank 11. The positioning shaft 21 is provided with a pressing assembly 5 for pressing the gear blank 11 on the base 2, and the gear blank 11 is positioned between the control assembly 4 and the pressing assembly 5.

As shown in fig. 4 and 5, the driving assembly 3 includes a bevel gear plate 31 rotatably connected to a side of the base 2 facing away from the positioning jaw 49, and a bevel gear 35 is coaxially disposed with the base 2. A through hole 32 is coaxially formed in the conical fluted disc 31, and a threaded sleeve 41 is coaxially and fixedly connected in the through hole 32. The positioning shaft 21 penetrates through the base 2 and is arranged in the threaded sleeve 41, and the positioning shaft 21 is in threaded connection with the threaded sleeve 41. A cylindrical housing 33 is coaxially fixed on the side of the base 2 facing away from the positioning clamping jaw 49, a cavity 34 is arranged in the housing 33, and the bevel gear disc 31 is positioned in the cavity 34. The housing 33 is rotatably connected with three bevel gears 35 in the chamber 34, the three bevel gears 35 are uniformly arranged along the circumferential direction of the housing 33, and each bevel gear 35 is meshed with the bevel gear disc 31. All coaxial fixedly connected with drive shaft 36 on three bevel gear 35, each drive shaft 36 all runs through housing 33, and each drive shaft 36 all rotates with housing 33 and is connected.

It is provided with only change ring 37 to slide along self axis direction on the housing 33, and only change ring 37 and be located between base 2 and each drive shaft 36, only change ring 37 and deviate from one side of base 2 and seted up three only change groove 371, only change groove 371 and drive shaft 36 one-to-one, and all be provided with in each only change groove 371 and be used for preventing drive shaft 36 pivoted slipmat 372, slipmat 372 is the semicircle ring shape, and each slipmat 372 all with the drive shaft 36 butt that corresponds. The base 2 is connected with the abutting bolts 38 between the two adjacent anti-rotation grooves 371 in a threaded manner, each abutting bolt 38 is connected to the base 2 in a rotating manner, an operator drives the anti-rotation ring 37 to move away from the base 2 by rotating each abutting bolt 38, so that the anti-rotation ring 37 compresses each driving shaft 36, each driving shaft 36 is prevented from rotating, and the condition that the gear blank 11 is installed loosely due to rotation of the driving shaft 36 is reduced.

The control assembly 4 comprises a sleeve 41 fixedly sleeved on the positioning shaft 21, a cavity 42 is arranged in the base 2, the sleeve 41 is located in the cavity 42, a moving ring 43 is sleeved on the sleeve 41 in a sliding mode along the axis direction of the sleeve, and two ends of the sleeve 41 along the axis direction of the sleeve are fixedly connected with limiting rings 44 used for limiting the moving ring 43 to slide out of the sleeve 41. A return spring 45 is sleeved on the sleeve 41 between the limit ring 44 far away from the housing 33 and the moving ring 43, one end of the return spring 45 abuts against the limit ring 44 far away from the housing 33, the other end of the return spring 45 abuts against the moving ring 43, and the return spring 45 is always in a compressed state.

Three linkage rods 46 are arranged on the moving ring 43, the three linkage rods 46 are uniformly arranged along the circumferential direction of the sleeve 41, one end of each linkage rod 46 is hinged to the outer circumferential wall of the moving ring 43, and one end, far away from the sleeve 41, of each linkage rod 46 is hinged to a sliding block 47. Base 2 deviates from one side of housing 33 and sets up three spout 48 that run through the end wall of base 2, and three spout 48 evenly sets up along the circumferencial direction of base 2, and the length direction of each spout 48 all with base 2's radial parallel. The sliding blocks 47 correspond to the sliding grooves 48 one by one, the sliding blocks 47 are arranged in the corresponding sliding grooves 48 in a sliding mode, and all the sliding blocks 47 are located outside the cavity 42 partially. The positioning clamping jaw 49 comprises three positioning blocks 491, the positioning blocks 491 are in one-to-one correspondence with the sliding blocks 47, and each positioning block 491 is fixedly connected to the end face, far away from the housing 33, of the corresponding sliding block 47. The process grooves 17 on the process bosses 16 correspond to the positioning blocks 491 one by one, and each positioning block 491 is inserted into the corresponding process groove 17.

When an operator controls the positioning shaft 21 and the sleeve 41 to move towards the housing 33, under the elastic force pushing action of the return spring 45 on the moving ring 43, the moving ring 43 moves towards the housing 33 along with the sleeve 41 for a distance, and the moving ring 43 moves to drive the linkage rod 46 to turn over, so that the sliding blocks 47 are driven to approach and move away from each other, and the operator can position the gear blank 11 conveniently; when each positioning block 491 abuts against the circumferential surface of the first convex ring 13, the sleeve 41 continues to move for a distance toward the housing 33, and in this process, the limiting ring 44 far away from the housing 33 overcomes the elastic force of the return spring 45 and moves for a distance toward the moving ring 43, so that the return spring 45 applies a thrust force to the moving ring 43, and further, each positioning block 491 is pressed against the first convex ring 13, thereby positioning and pre-fixing the gear blank 11.

As shown in fig. 4 and 6, the pressing assembly 5 includes a cylindrical mounting tube 51, an insertion rod 52 with a diameter smaller than that of the positioning shaft 21 is coaxially and fixedly connected to the upper end surface of the positioning shaft 21, and the mounting tube 51 is slidably sleeved on the insertion rod 52 along the axial direction thereof. The mounting tube 51 is in contact with one end of the positioning shaft 21 facing the insertion rod 52, and the mounting tube 51 is provided with a stopper unit 6 for restricting the movement of the mounting tube 51 on the insertion rod 52 at one end away from the positioning shaft 21. Three mounting seats 53 are fixedly connected to the outer peripheral wall of the mounting tube 51, and a pressing plate 54 for pressing the gear blank 11 onto each positioning block 491 is arranged on one side of each mounting seat 53 away from the mounting tube 51.

As fig. 4 and 7, spacing unit 6 includes two rectangular inserted blocks 61, two inserted blocks 61 set up about the axis direction symmetry of installation section of thick bamboo 51, the length direction of two inserted blocks 61 all is parallel with sleeve 41 radially, the installation section of thick bamboo 51 corresponds two inserted block 61 positions and has all seted up sliding hole 62, and two inserted blocks 61 all slide along self length direction and wear to establish in corresponding sliding hole 62, the equal fixedly connected with in one side that two inserted blocks 61 carried on the back mutually is used for restricting the inserted block 61 and inserts the limiting plate 63 of installation section of thick bamboo 51 distance. The mounting tube 51 is provided with mounting plates 64 corresponding to the two limiting plates 63, and the two mounting plates 64 are provided with limiting springs 65 for pushing the corresponding limiting plates 63 to move towards the sliding holes 62.

The slot 7 is provided on the insert rod 52, the two insert blocks 61 are partially inserted into the slot 7, and the two insert blocks 61 are abutted against the slot wall of the slot 7 away from the positioning shaft 21. The end surface of the insertion rod 52 far away from the positioning shaft 21 is provided with a receiving groove 71 communicated with the slot 7, the receiving groove 71 is cylindrical, and the receiving groove 71 and the insertion rod 52 are coaxial. A positioning barrel 72 is arranged in the accommodating groove 71 in a sliding mode along the axis direction, positioning grooves 73 are formed in the positions, corresponding to the positioning barrel 72, of the two insertion blocks 61, the barrel wall part of the positioning barrel 72 is inserted into the two positioning grooves 73, and the two insertion blocks 61 are limited to slide out of the insertion grooves 7. An adjusting block 74 is coaxially and rotatably connected to one side of the positioning cylinder 72 far away from the positioning shaft 21, and the adjusting block 74 is in threaded connection in the mounting groove 12. An operator drives the positioning cylinder 72 to move by rotating the adjusting block 74, so that the operator can conveniently limit the two inserting blocks 61 through the positioning cylinder 72.

The opposite ends of the two insertion blocks 61 are provided with first inclined planes 75, one ends, far away from the positioning shaft 21, of the two first inclined planes 75 incline oppositely, and the two insertion blocks 61 are arranged at intervals along the length direction of the two insertion blocks. A connecting rod 76 is fixedly connected in the positioning cylinder 72, one end of the connecting rod 76 far away from the adjusting block 74 is fixedly connected with a push block 77, and two wing plates 78 are fixedly connected on the push block 77. The two wing plates 78 are provided with second inclined surfaces 79 matched with the first inclined surfaces 75 at positions corresponding to the first inclined surfaces 75, and when the push block 77 moves towards the direction of the adjusting block 74, the two insertion blocks 61 can be pushed out of the slot 7. When the positioning cylinder 72 is inserted into the positioning grooves 73 of the two insertion blocks 61, a certain gap exists between the first inclined surface 75 and the corresponding second inclined surface 79.

If fig. 4 and fig. 6, be provided with three stopper 8 that are used for supporting tight mounting groove 12 lateral walls on the mount pad 53, three stopper 8 is the cylindricality, and stopper 8's length direction is parallel with the axis direction of installation section of thick bamboo 51, and three stopper 8 evenly sets up along the circumferencial direction of installation section of thick bamboo 51, and three stopper 8 sets up with three mount pad 53 interval. All be connected with second connecting rod 82 through first connecting rod 81 between each stopper 8 and the installation section of thick bamboo 51, first connecting rod 81 and second connecting rod 82 on same stopper 8 are parallel to each other, and the one end of first connecting rod 81 and second connecting rod 82 all articulates on mount pad 53 through first pivot 83, and the other end of first connecting rod 81 and second connecting rod 82 all articulates on corresponding stopper 8 through second pivot 84. And on the same limiting block 8, the distance between the hinge axes at the two ends of the first connecting rod 81 is the same as the distance between the hinge axes at the two ends of the second connecting rod 82.

The second rotating shaft 84 of each second connecting rod 82 is rotatably connected with a third connecting rod 85, the mounting cylinder 51 is coaxially provided with a retaining ring 86 for abutting against the bottom wall of the mounting groove 12, the retaining ring 86 is located on one side of the three mounting seats 53 facing the positioning shaft 21, and each third connecting rod 85 is hinged on one side of the retaining ring 86 facing the mounting seat 53. The upper end of the baffle ring 86 is fixedly connected with three guide posts 87, and the axial directions of the three guide posts 87 are all parallel to the axial direction of the mounting tube 51. The guide posts 87 correspond to the mounting seats 53 one by one, and each guide post 87 slides along the axis direction thereof and penetrates through the corresponding mounting seat 53. Each guide post 87 is sleeved with a pushing spring 88 between the corresponding mounting seat 53 and the retaining ring 86, one end of each pushing spring 88 is pressed on the corresponding mounting seat 53, the other end of each pushing spring 88 abuts against the retaining ring 86, and each pushing spring 88 is in a compressed state. One end of each guide post 87 penetrating out of the mounting seat 53 is fixedly connected with a blocking ring 89 used for preventing the guide post 87 from sliding out of the mounting seat 53.

When the positioning shaft 21 drives the installation barrel 51 to move towards the direction of being far away from the base 2, drive three clamp plates 54 to move towards the direction of the gear blank 11, meanwhile, still drive the tank bottom wall direction of keeping off the ring 86 towards the installation groove 12 to move, when keeping off the tank bottom wall butt of the ring 86 and the installation groove 12, the installation barrel 51 continues to move towards the direction of the base 2, and then make the ring 86 and the installation barrel 51 move, and drive each third connecting rod 85 to overturn, make three stopper 8 keep away from each other and support tightly on the inner wall of the installation groove 12, at this moment, three clamp plates 54 all compress tightly one side that deviates from the base 2 at the gear blank 11, realize the position fixation of the gear blank 11 on the base 2.

The implementation principle of the embodiment of the application is as follows: in the initial state, the positioning blocks 491 on the base 2 are away from each other. When an operator clamps the gear blank 11, the operator firstly sleeves the gear blank 11 on the positioning shaft 21, the mounting groove 12 of the gear blank 11 deviates from one side of the base 2, the operator moves the gear blank 11 to enable the first convex ring 13 to abut against the end surface of the base 2 and the positioning blocks 491, the positioning blocks 491 are all embedded in the corresponding process grooves 17, and then the operator needs to install the mounting cylinder 51 on the positioning shaft 21.

When fixing the installation section of thick bamboo 51 on location axle 21, the operator overlaps the installation section of thick bamboo 51 on inserted bar 52 for installation section of thick bamboo 51 and location axle 21 are towards the terminal surface butt of inserted bar 52, keep off ring 86 and each stopper 8 this moment and all stretch into mounting groove 12 in, and two holes 62 that slide all align with slot 7. Under the elastic force effect of limiting spring 65, two inserted blocks 61 are pegged graft in the slot 7 that corresponds for limiting plate 63 on two inserted blocks 61 all with the outer wall butt of installation section of thick bamboo 51, realize the rigidity of installation section of thick bamboo 51 on inserted bar 52. An operator can screw the adjusting block 74, so that the adjusting block 74 drives the positioning cylinder 72 to move towards the positioning shaft 21, and part of the positioning cylinder 72 is inserted into the positioning grooves 73 of the two insertion blocks 61, so as to limit the two limiting blocks 8 to be separated from the slot 7, complete the position fixation between the mounting cylinder 51 and the positioning shaft 21, and improve the connection stability between the mounting cylinder 51 and the positioning shaft 21.

After the fixing between the mounting cylinder 51 and the positioning shaft 21 is completed, the operator rotates the movable driving shaft 36 therein to drive the corresponding bevel gear 35 to rotate, so that the bevel gear disc 31 drives the threaded cylinder 39 to rotate, and since the positioning shaft 21 is in threaded connection with the threaded cylinder 39, the bevel gear disc 31 drives the positioning shaft 21 to move on the base 2 in a direction away from the inserted rod 52. In the process that the positioning shaft 21 moves away from the insertion rod 52, the positioning shaft 21 drives the sleeve 41 and the mounting tube 51 to move toward the housing 33.

During the movement of the sleeve 41 toward the housing 33, the moving ring 43 moves a distance toward the housing 33 with the moving ring 43 under the elastic force of the return spring 45. In the process that the moving ring 43 moves towards the housing 33, the moving ring 43 drives each linkage rod 46 to turn over and pulls each positioning block 491 to draw close each other until all three positioning blocks 491 abut against the outer peripheral surface of the second bulge loop 14. The sleeve 41 continues to move a predetermined distance toward the housing 33, so that the return spring 45 is compressed, and the elastic force of the return spring 45 pushes the moving ring 43, so that the positioning blocks 491 clamp the outer peripheral surface of the second collar 14. The positioning of the gear blank 11 is effected such that the axis of the gear blank 11 is collinear with the axis of the chassis 2.

In the process that the installation cylinder 51 moves towards the direction of the housing 33, the installation cylinder 51 drives the stop ring 86 and the press plates 54 to move towards the direction of the bottom wall of the installation groove 12, after the stop ring 86 abuts against the bottom wall of the installation groove 12, the installation cylinder 51 continues to move towards the direction of the bottom wall of the installation groove 12 under the driving of the positioning shaft 21, the installation cylinder 51 and the stop ring 86 approach each other and compress the pushing springs 88, the installation cylinder 51 and the stop ring 86 approach each other and drive the third connecting rod 85 to turn over, so that the three limit blocks 8 are away from each other and abut against the inner wall of the installation groove 12, and before the three limit blocks 8 abut against the inner wall of the installation groove 12, the positioning blocks 491 abut against the outer peripheral surface of the gear blank 11. When the three limit blocks 8 abut against the inner wall of the mounting groove 12, each press plate 54 is also pressed on one side of the gear blank 11 departing from the base 2, so that the position of the gear blank 11 on the base 2 is fixed.

After finishing fixing gear blank 11, the operator drives anti-rotation ring 37 to move towards each driving shaft 36 direction by screwing each abutting bolt 38, compresses each driving shaft 36 through anti-rotation ring 37, restricts the rotation of driving shaft 36, and then reduces the condition that gear blank 11 rocks and leads to gear blank 11 machining error to be too big in the gear blank 11 course of working.

After the operator finishes machining the blank gear 11, the operator needs to detach the finished blank gear 11 from the base 2. An operator needs to reversely screw each abutting bolt 38, position limitation of each driving shaft 36 by each anti-rotation ring 37 is removed, then the operator reversely rotates one of the driving shafts 36 to drive the corresponding bevel gear 35 to rotate in the direction, so that the bevel gear disc 31 resets and further drives the positioning shaft 21 to reset, the positioning shaft 21 resets and then drives the sleeve 41 and the mounting cylinder 51 to reset, and the limiting effect of the gear blank 11 on the base 2 is removed; finally, the operator drives the positioning cylinder 72 to move towards the direction far away from the positioning shaft 21 through the reverse rotation adjusting block 74, the limiting effect of the positioning cylinder 72 on the two insertion blocks 61 is relieved, the operator continues to drive the push block 77 to move away from the positioning shaft 21 through the reverse rotation adjusting block 74, the corresponding first inclined planes 75 are pushed through the two second inclined planes 79 on the positioning block 491, so that the two insertion blocks 61 are pushed out of the insertion slots 7 under the action of the elastic force of the limiting springs 65, the limiting effect of the installation cylinder 51 on the insertion rods 52 is relieved, the operator can conveniently detach the installation cylinder 51 from the insertion rods 52, and the operator can conveniently detach the gear blank 11 from the base 2.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a tight frock of helical gear processing clamp which characterized in that: including base (2), be provided with location clamping jaw (49) that are used for advancing line location to gear blank (11) on base (2), slide on base (2) and wear to be equipped with location axle (21), be provided with on base (2) and be used for control drive assembly (3) that location axle (21) removed, be provided with useful control on location axle (21) control assembly (4) that location clamping jaw (49) removed, gear blank (11) cover is established on location axle (21), just can dismantle on location axle (21) and be provided with and be used for compressing tightly gear blank (11) compress tightly subassembly (5) on base (2).

2. The bevel gear machining clamping tool according to claim 1, characterized in that: the control assembly (4) comprises a sleeve (41), a cavity (42) is formed in the base (2), the positioning shaft (21) penetrates through the base (2) in a sliding mode along the axis direction of the positioning shaft, part of the positioning shaft (21) is located in the cavity (42), the sleeve (41) is fixedly sleeved on the positioning shaft (21), a plurality of linkage rods (46) are hinged to the sleeve (41), sliding blocks (47) are hinged to the linkage rods (46), sliding grooves (48) which correspond to the sliding blocks (47) in a one-to-one mode are formed in the base (2), and the sliding blocks (47) are arranged in the corresponding sliding grooves (48) in a sliding mode;

the positioning clamping jaw (49) comprises a plurality of positioning blocks (491), the positioning blocks (491) correspond to the sliding blocks (47) one by one, and each positioning block (491) is fixedly connected to the corresponding sliding block (47).

3. The clamping tool for processing the bevel gear according to claim 2, wherein the clamping tool comprises: the sleeve (41) is sleeved with a moving ring (43) in a sliding mode along the axis direction of the sleeve, two ends of the sleeve (41) are provided with limiting rings (44), and the sleeve (41) is sleeved with a return spring (45) used for pushing each positioning block (491) to clamp the gear blank (11).

4. The clamping tool for processing the bevel gear according to claim 1, wherein the clamping tool comprises: drive assembly (3) are including rotating awl fluted disc (31) of connecting on base (2), be provided with screw thread section of thick bamboo (39) on awl fluted disc (31), location axle (21) deviate from the one end of inserted bar (52) is inserted in screw thread section of thick bamboo (39), just the reference column with screw thread section of thick bamboo (39) threaded connection, rotate on base (2) and be connected with a plurality of bevel gears (35), and each bevel gear (35) all with awl fluted disc (31) meshing.

5. The bevel gear machining clamping tool according to claim 4, characterized in that: each coaxial being provided with on bevel gear (35) and being used for controlling self pivoted drive shaft (36), be provided with on base (2) and end swivel (37), threaded connection has a plurality of tight bolts (38) of supporting on ending swivel (37), each it all rotates to connect to prop tight bolt (38) and be connected on base (2), a plurality of grooves (371) that end have been seted up on ending swivel (37), end groove (371) with drive shaft (36) one-to-one, and each all be provided with in ending groove (371) and be used for the restriction drive shaft (36) pivoted slipmat (372).

6. The bevel gear machining clamping tool according to claim 1, characterized in that: compress tightly subassembly (5) including installation section of thick bamboo (51), location axle (21) penetrate and are provided with inserted bar (52) on the terminal surface of gear blank (11), installation section of thick bamboo (51) slide the cover and establish inserted bar (52) are gone up and the butt is in on the terminal surface of location axle (21), be provided with on inserted bar (52) be used for with installation section of thick bamboo (51) carry out spacing unit (6), be provided with on installation section of thick bamboo (51) a plurality of be used for compressing tightly gear blank (11) clamp plate (54) on base (2).

7. The bevel gear machining clamping tool according to claim 6, characterized in that: the mounting barrel (51) is provided with a plurality of limiting blocks (8) used for abutting against the inner ring wall of the mounting groove (12), a first connecting rod (81) and a second connecting rod (82) are arranged between each limiting block (8) and the mounting barrel (51), one ends of the first connecting rod (81) and the second connecting rod (82) are hinged on the mounting barrel (51), the other ends of the first connecting rod (81) and the second connecting rod (82) are hinged on the corresponding limiting blocks (8), the first connecting rod (81) and the second connecting rod (82) on the same limiting block (8) are parallel to each other, the distance between hinge axes at two ends of the first connecting rod (81) is the same as the distance between hinge axes at two ends of the second connecting rod (82), the mounting barrel (51) is further provided with a retaining ring (86) used for abutting against the groove bottom wall of the mounting groove (12), keep off ring (86) and slide the setting along self axis direction and be in on installation section of thick bamboo (51), keep off ring (86) and correspond each stopper (8) position all sets up third connecting rod (85), each third connecting rod (85) homogeneous end articulates and is corresponding stopper (8), each the other end of third connecting rod (85) all articulates keep off ring (86) are last.

8. The clamping tool for bevel gear machining according to claim 7, characterized in that: a plurality of mount pads (53) of fixedly connected with on installation cylinder (51), mount pad (53) with clamp plate (54) one-to-one, each the equal fixed connection in clamp plate (54) corresponds on mount pad (53), keep off ring (86) and correspond each mount pad (53) position all is provided with guide post (87), each slide on guide post (87) and run through the correspondence mount pad (53), and each go up guide post (87) and be in keep off ring (86) with all overlap between mount pad (53) and establish and be used for promoting keep off ring (86) and keep away from the top of mount pad (53) pushes away spring (88).

9. The clamping tool for processing the bevel gear according to claim 6, wherein the clamping tool comprises: the limiting unit (6) comprises an inserting block (61), the inserting block (61) is arranged on the installation barrel (51) in a sliding mode, a limiting plate (63) used for limiting the distance of the inserting block (61) inserted into the installation barrel (51) is arranged on the inserting block (61), the limiting plate (63) abuts against the installation barrel (51), a slot (7) is formed in the position, corresponding to the inserting block (61), of the inserting rod (52), and the inserting block (61) is inserted into the slot (7);

keep away from inserted bar (52) set up on the terminal surface of location axle (21) with holding tank (71) of slot (7) intercommunication, follow in holding tank (71) slide and be provided with location section of thick bamboo (72) in inserted bar (52) axis direction, constant head tank (73) have been seted up on inserted bar (52), location section of thick bamboo (72) joint is in constant head tank (73), location section of thick bamboo (72) deviate from the one end of location axle (21) is rotated and is connected with regulating block (74), regulating block (74) threaded connection be in holding tank (71).

10. The clamping tool for bevel gear machining according to claim 9, characterized in that: insert (61) are provided with two, installation section of thick bamboo (51) correspond two the position of insert (61) all is provided with mounting panel (64), two all be provided with on mounting panel (64) and be used for promoting insert (61) insert and correspond spacing spring (65) of slot (7), two one side that insert slot (7) were inserted in insert (61) all is provided with first inclined plane (75), two one side back of the body slope of keeping away from regulating block (74) in first inclined plane (75), the lower extreme of a location section of thick bamboo (72) still is provided with ejector pad (77), ejector pad (77) correspond two first inclined plane (75) position all is provided with second inclined plane (79) of adaptation.