CN211840461U - Positioning device for machining gear by numerical control gear hobbing machine - Google Patents
Positioning device for machining gear by numerical control gear hobbing machine Download PDFInfo
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- CN211840461U CN211840461U CN202020383435.XU CN202020383435U CN211840461U CN 211840461 U CN211840461 U CN 211840461U CN 202020383435 U CN202020383435 U CN 202020383435U CN 211840461 U CN211840461 U CN 211840461U
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- hobbing machine
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Abstract
The utility model discloses a positioner is used to numerical control gear hobbing machine processing gear relates to the technical field of gear hobbing machine, and it includes circular shape center block, the diameter of center block equals with the diameter of gear shaft, the coaxial circular shape joint piece that is fixed with of center block, the joint piece equals with the epaxial assembly groove diameter of gear to the joint is in the assembly groove, center block centre of a circle department has seted up the centre bore. When adding man-hour to the gear, with joint piece joint in the assembly groove for centre block and gear shaft terminal surface butt, then drive thimble peg graft in the centre bore, make the thimble push up the centre block tightly, thereby realize the central positioning to the gear shaft, then drive gear hobbing cutter processes the gear shaft, through setting up the centre block, makes the thimble process the gear that has great assembly groove. The utility model discloses have the effect that improves the hobbing cutter to gear machining precision.
Description
Technical Field
The utility model belongs to the technical field of the technique of gear hobbing machine and specifically relates to a positioner is used to numerical control gear hobbing machine processing gear.
Background
At present, the numerical control gear hobbing machine is the most widely applied machine tool in gear processing machines, and straight teeth and helical gears can be cut on the gear hobbing machine, and worm gears, chain wheels and the like can also be processed.
As shown in fig. 1, the prior art discloses a numerical control gear hobbing machine, which includes a rectangular work table 410, a machine box 420 is fixed at one end of the work table 410 in the length direction, a three-jaw chuck 430 is rotatably arranged on the machine box 420, and a controller 421 for controlling the rotation of the three-jaw chuck 430 is arranged on the machine box 420. The other end of the length direction of the working table 410 is slidably provided with a tail seat 440 along the length direction, and the tail seat 440 is provided with a horizontal thimble 450 in a rotating way. A driving screw 411 is rotatably arranged on one side of the workbench 410 along the length direction of the workbench, a slide carriage 412 is in threaded connection with the driving screw 411, a hobbing cutter holder 460 is fixed on the slide carriage 412, and the hobbing cutter holder 460 is in sliding connection with the workbench 410. Supporting seats 470 are arranged on two sides of the width direction of the workbench 410 in a sliding mode along the length direction of the workbench 410, horizontal hydraulic cylinders 480 are fixed on the supporting seats 470, and the hydraulic cylinders 480 are powered by hydraulic pumps. Arc-shaped clamping plates 490 are fixed on piston rods of the two hydraulic cylinders 480, and the gear shafts are clamped by the two clamping plates 490. When a long gear shaft is machined, due to the requirement of matching with other workpieces, a circular assembly groove 200 is formed in the upper end face of the gear shaft, when the assembly groove 200 is shallow and the diameter of the assembly groove is smaller than that of the ejector pin 450, when the gear shaft is installed, the three-jaw chuck 430 clamps one end of the gear shaft, then the ejector pin 450 is driven to be inserted into the assembly groove 200, the central positioning of the gear shaft is achieved, and then the hobbing cutter on the hobbing cutter frame 460 is driven to machine the gear shaft. When the assembly groove 200 is deep and the diameter of the assembly groove 200 is larger than that of the thimble 450, when the gear shaft is installed, one end of the gear shaft is clamped by the three-jaw chuck 430, then the two hydraulic cylinders 480 are driven to move, so that the two clamping plates 490 clamp the gear shaft, and then the hobbing cutter is driven to process the gear shaft.
Because the gear shaft that the processing assembly groove is darker and the diameter is greater than the thimble diameter, can't use the top to carry out the center location to the gear shaft to because the gear shaft is longer, so after pressing from both sides the gear shaft surface with the clamp plate, the lathe tool adds man-hour to the gear shaft, and the gear shaft can take place to rock, thereby influences the precision of hobbing cutter to the gear shaft processing.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a be applicable to the great numerical control gear hobbing machine processing positioner for gear of assembly groove diameter to the not enough of prior art existence.
The above object of the present invention can be achieved by the following technical solutions:
the utility model provides a positioner is used to numerical control gear hobbing machine tooling gear, includes circular shape center block, the diameter of center block equals with the diameter of gear shaft, the coaxial circular shape joint piece that is fixed with of center block, the joint piece equals with the assembly groove diameter on the gear shaft to the joint is in the assembly groove, the centre of a circle department of center block has seted up the centre bore.
Through adopting above-mentioned technical scheme, add man-hour when the gear, with joint piece joint in the assembly groove for center block and gear shaft terminal surface butt, then the drive thimble is pegged graft in the centre bore, makes the thimble push up the center block tightly, thereby realizes the center location to the gear shaft, then drives the gear hobbing cutter and processes the gear shaft, through setting up the center block, still makes the thimble can process the gear that has great diameter assembly groove, thereby improves the precision that the gear hobbing cutter processed the gear.
Further: the clamping block is provided with a supporting piece, the supporting piece comprises a supporting block and a driving sub-piece for driving the supporting block to slide, and the supporting block slides along the diameter of the clamping block.
Through adopting above-mentioned technical scheme, when the diameter of assembly groove is greater than the diameter of joint piece, with joint piece joint in the assembly groove, centre block and gear shaft butt, then start the drive subelement for drive subelement drive supporting shoe slides outward to the joint piece, thereby makes supporting shoe and assembly groove inner wall butt, thereby makes the centre block be fixed in on the gear shaft, makes the gear hobbing machine add man-hour, the skew can not take place for the centre block, influences the processing of gear hobbing machine to the gear.
Further: the clamping block is provided with a guide groove along the diameter of the clamping block, and the supporting block slides in the guide groove.
Through adopting above-mentioned technical scheme, the purpose that sets up the guide way is, plays the guide effect to the slippage of supporting shoe.
Further: and one surface of the supporting block, which is abutted against the inner wall of the assembling groove, is set into an arc surface.
Through adopting above-mentioned technical scheme, set the purpose of cambered surface to the one side of supporting shoe, can increase the area of supporting shoe and assembly groove inner wall butt to reinforcing supporting effect.
Further: the driving sub-part comprises a first gear and a first rack, the first gear rotates in the clamping block, and the first rack is fixedly connected with the supporting block and meshed with the first gear.
Through adopting above-mentioned technical scheme, after the first gear of drive rotated, first gear drove the removal of first rack to make first rack promote the removal of supporting shoe, thereby make the butt that realizes supporting shoe and assembly groove.
Further: a second gear is rotated in the center block, the first gear is meshed with teeth on an inner hole of the second gear, a second rack is horizontally slid on the center block, and the second rack is meshed with outer teeth of the second gear.
Through adopting above-mentioned technical scheme, the pulling second rack for the rotation of second gear is driven to the second rack, thereby makes the rotation of second gear drive first gear, thereby makes the first rack promote sliding of supporting shoe, makes the inner wall butt of supporting shoe and assembly groove.
Further: the lateral wall of center block is fixed with first locating plate, it has the second locating plate to slide in the first locating plate, the one end that the second locating plate is close to the second rack is fixed with the location tooth, the tooth's socket joint of location tooth and second rack, first locating plate lateral wall threaded connection has spacing bolt, one end and the second locating plate butt in the first locating plate are arranged in to spacing bolt.
Through adopting above-mentioned technical scheme, after the inner wall butt of supporting shoe and assembly groove, the second locating plate slides for the location tooth joint is in the tooth's socket of second rack, then rotates spacing bolt, makes spacing bolt and second locating plate butt, thereby realizes spacing to the second rack.
Further: and a handle is fixed at one end of the second rack extending out of the central block.
Through adopting above-mentioned technical scheme, the purpose that sets up the handle for when the staff pulled the second rack, application of force that can be better.
To sum up, the utility model discloses a beneficial technological effect does:
the clamping block and the central hole are arranged, when the gear is machined, the clamping block is clamped in the assembling groove, the central block is abutted against the end face of the gear shaft, the ejector pin is driven to be inserted into the central hole, the ejector pin tightly pushes the central block, central positioning of the gear shaft is achieved, the hobbing cutter is driven to machine the gear shaft, and the ejector pin can machine the gear with the larger assembling groove by arranging the central block, so that the precision of machining the gear by the hobbing cutter is improved;
the supporting blocks are arranged for clamping the clamping blocks in the assembling groove when the diameter of the assembling groove is larger than that of the clamping blocks, the central block is abutted against the gear shaft, then the driving sub-piece is started, the driving sub-piece drives the supporting blocks to slide outwards of the clamping blocks, so that the supporting blocks are abutted against the inner wall of the assembling groove, the central block is fixed on the gear shaft, and when the gear is machined by the gear hobbing machine, the central block cannot deviate, so that the machining of the gear by the gear hobbing machine is influenced;
the purpose of setting up location tooth and spacing bolt is, after the inner wall butt of supporting shoe and assembly groove, the second locating plate of slip for the location tooth joint is in the tooth's socket of second rack, then rotates spacing bolt, makes spacing bolt and second locating plate butt, thereby realizes spacing to the second rack.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the prior art;
FIG. 2 is a state view of the center block mounted to the gear shaft;
FIG. 3 is a structural diagram showing the positional relationship between the clamping blocks and the supporting blocks on the center block;
FIG. 4 is a cross-sectional view showing the drive sub after cutting away a portion of the center block.
Reference numerals: 100. a center block; 110. a clamping block; 200. assembling a groove; 300. a bracing member; 310. a support block; 311. a guide groove; 320. a drive subassembly; 321. a first rack; 322. a first gear; 323. a second gear; 324. a second rack; 325. a chute; 326. a slider; 329. a first positioning plate; 330. a second positioning plate; 331. a limit bolt; 340. a handle; 410. a work table; 411. driving a lead screw; 412. a slide carriage; 420. a chassis; 421. a controller; 430. a three-jaw chuck; 440. a tailstock; 450. a thimble; 460. a hobbing cutter holder; 470. a supporting seat; 480. a hydraulic cylinder; 490. and (5) clamping the plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 2, for the utility model discloses a positioner for numerical control gear hobbing machine processing gear, including center block 100, center block 100 is circular to the diameter equals with the diameter of gear shaft. The central block 100 is coaxially welded with a circular clamping block 110 (see fig. 3), the diameter of the clamping block 110 is equal to that of an assembly groove 200 (see fig. 1) on the gear shaft, and the clamping block 110 is clamped in the assembly groove 200. A center hole is formed at the center of the center block 100, and the thimble 450 is inserted into the center hole. When the gear shaft is processed, the clamping block 110 is clamped in the assembling groove 200, the central block 100 is abutted to the gear shaft, then the ejector pin 450 is driven to be inserted into the central hole, the ejector pin 450 tightly pushes the central block 100, the central positioning of the gear shaft is realized, and then the gear hobbing cutter is driven to process the gear shaft.
As shown in fig. 3, since the diameters of the assembly grooves 200 are different in size, in order to enable the clamping block 110 to adapt to the gear with the diameter of the assembly groove 200 being larger than that of the clamping block 110, the clamping block 110 is provided with the supporting member 300, the supporting member 300 comprises supporting blocks 310 and driving sub-members 320, the number of the supporting blocks 310 is three, the angles between two adjacent supporting blocks 310 are equal, the three supporting blocks 310 respectively slide oppositely along the diameters of the clamping block 110, and the driving sub-members 320 are used for driving the sliding of the supporting blocks 310. When the diameter of assembly groove 200 is greater than the diameter of joint piece 110, with joint piece 110 joint in assembly groove 200, center block 100 and gear shaft butt, then start drive son 320 for drive son 320 drive supporting shoe 310 slides outward to joint piece 110, thereby makes supporting shoe 310 and assembly groove 200 inner wall butt, thereby makes center block 100 be fixed in on the gear shaft.
In order to guide the sliding of the supporting block 310, three guide grooves 311 are uniformly formed along the diameter of the clamping block 110, and the three supporting blocks 310 respectively slide in the three guide grooves 311.
In order to enhance the tightening effect of the supporting block 310, one end of the supporting block 310 abutting against the inner wall of the assembling groove 200 is set to be a cambered surface, so that the abutting area of the supporting block 310 and the inner wall of the assembling groove 200 is increased.
As shown in fig. 4, the driving sub-assembly 320 includes three first racks 321 and three first gears 322, and the three first gears 322 are rotated in the clamping block 110 through a rotation shaft. The three first racks 321 are welded to the three support blocks 310 (see fig. 3), respectively, and one ends thereof away from the support blocks 310 are engaged with the three first gears 322, respectively. In order to drive the three first gears 322 to rotate synchronously, a second gear 323 rotates in the center block 100, and the second gear 323 is engaged with the three first gears 322. A second rack 324 is horizontally moved in the center block 100, and the second rack 324 is externally engaged with the second gear 323. Pulling the second rack 324, so that the second rack 324 drives the second gear 323 to rotate, and the second gear 323 drives the first gear 322 to rotate, so that the first rack 321 pushes the support block 310 to slide, and the support block 310 abuts against the inner wall of the assembly groove 200.
In order to support and guide the first rack 321 in sliding, a sliding groove 325 is formed in the clamping block 110 along the sliding direction, a sliding block 326 is fixed on the first rack 321, and the sliding block 326 slides in the sliding groove 325.
In order to limit the position of the second rack 324, a first positioning plate 329 is fixed on the side wall of the central block 100, a second positioning plate 330 is slidably arranged in the first positioning plate 329, and a positioning tooth is fixed at one end of the second positioning plate 330 close to the second rack 324 and is clamped in a tooth groove of the second rack 324. A limit bolt 331 is screwed on the side wall of the first positioning plate 329, and one end of the limit bolt 331 extending into the first positioning plate 329 is abutted against the second positioning plate 330. After the supporting block 310 abuts against the inner wall of the assembly groove 200, the second positioning plate 330 is slid, so that the positioning teeth are clamped in the tooth grooves of the second rack 324, and then the limiting bolt 331 is rotated, so that the limiting bolt 331 abuts against the second positioning plate 330, and therefore the limiting of the second rack 324 is realized.
In order to enable a worker to apply a force when pulling the second rack 324, a handle 340 is installed at one end of the second rack 324 extending out of the center block 100.
The specific working process of this embodiment: the clamping block 110 is installed in the assembling groove 200, so that the central block 100 is abutted to the gear shaft, and then the ejector pin 45 is driven to be inserted into the central hole, thereby realizing the central positioning of the gear shaft. After the diameter of the assembling groove 200 is larger than that of the clamping block 110, the clamping block 110 is installed in the assembling groove 200, the center block 100 is abutted to the end face of the gear shaft, then the second rack 324 is pulled, so that the second rack 324 drives the second gear 323 to rotate, the second gear 323 drives the first gear 322 to rotate, the first gear 322 drives the first rack 321 to move, the first rack 321 pushes the supporting block 310 to slide towards the outer side of the clamping block 110, so that the supporting block 310 is abutted to the inner wall of the assembling groove 200, then the second positioning plate 330 slides, so that the positioning teeth are clamped with tooth grooves on the second rack 324, then the limiting bolt 331 is rotated, the locking of the second positioning plate 330 is realized, and the installation of the center block 100 is realized.
Claims (8)
1. The utility model provides a positioner is used to numerical control gear hobbing machine processing gear which characterized in that: including circular shape center block (100), the diameter of center block (100) equals with the diameter of gear shaft, center block (100) coaxial fixation has circular shape joint piece (110), joint piece (110) equals with assembly groove (200) diameter on the gear shaft to the joint is in assembly groove (200), center block (100) centre of a circle department has seted up the centre bore.
2. The positioning device for a numerical control gear hobbing machine gear according to claim 1, characterized in that: be provided with holding member (300) on joint piece (110), holding member (300) are including supporting shoe (310) and drive sub-component (320) that drive supporting shoe (310) slided, supporting shoe (310) slide along the diameter of joint piece (110).
3. The positioning device for a numerical control gear hobbing machine gear according to claim 2, characterized in that: the clamping block (110) is provided with a guide groove (311) along the diameter of the clamping block, and the supporting block (310) slides in the guide groove (311).
4. The positioning device for a numerical control gear hobbing machine gear according to claim 3, characterized in that: one surface of the supporting block (310) which is abutted against the inner wall of the assembling groove (200) is set to be an arc surface.
5. The positioning device for a numerical control gear hobbing machine gear according to claim 2, characterized in that: the driving sub-part (320) comprises a first gear (322) and a first rack (321), the first gear (322) rotates in the clamping block (110), and the first rack (321) is fixedly connected with the supporting block (310) and meshed with the first gear (322).
6. The positioning device for a numerical control gear hobbing machine gear according to claim 5, characterized in that: a second gear (323) rotates in the center block (100), the first gear (322) is meshed with teeth on an inner hole of the second gear (323), a second rack (324) slides horizontally on the center block (100), and the second rack (324) is meshed with outer teeth of the second gear (323).
7. The positioning device for a numerical control gear hobbing machine gear according to claim 6, characterized in that: the lateral wall of center block (100) is fixed with first locating plate (329), first locating plate (329) internal slip has second locating plate (330), one end that second locating plate (330) is close to second rack (324) is fixed with the location tooth, the tooth's socket joint of location tooth and second rack (324), first locating plate (329) lateral wall threaded connection has stop bolt (331), one end and second locating plate (330) butt in first locating plate (329) are arranged in to stop bolt (331).
8. The positioning device for a numerical control gear hobbing machine gear according to claim 7, characterized in that: and a handle (340) is fixed at one end of the second rack (324) extending out of the central block (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020383435.XU CN211840461U (en) | 2020-03-23 | 2020-03-23 | Positioning device for machining gear by numerical control gear hobbing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020383435.XU CN211840461U (en) | 2020-03-23 | 2020-03-23 | Positioning device for machining gear by numerical control gear hobbing machine |
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| Publication Number | Publication Date |
|---|---|
| CN211840461U true CN211840461U (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020383435.XU Active CN211840461U (en) | 2020-03-23 | 2020-03-23 | Positioning device for machining gear by numerical control gear hobbing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116967777A (en) * | 2023-09-22 | 2023-10-31 | 南通新思迪机电有限公司 | Turning gear hobbing integrated equipment for gear shaft processing |
-
2020
- 2020-03-23 CN CN202020383435.XU patent/CN211840461U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116967777A (en) * | 2023-09-22 | 2023-10-31 | 南通新思迪机电有限公司 | Turning gear hobbing integrated equipment for gear shaft processing |
| CN116967777B (en) * | 2023-09-22 | 2023-11-28 | 南通新思迪机电有限公司 | Turning gear hobbing integrated equipment for gear shaft processing |
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