CN204771785U - Worktable mechenism on numerical control gear -hobbing machine lathe bed - Google Patents
Worktable mechenism on numerical control gear -hobbing machine lathe bed Download PDFInfo
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- CN204771785U CN204771785U CN201520386027.9U CN201520386027U CN204771785U CN 204771785 U CN204771785 U CN 204771785U CN 201520386027 U CN201520386027 U CN 201520386027U CN 204771785 U CN204771785 U CN 204771785U
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Abstract
The utility model discloses a worktable mechenism on numerical control gear -hobbing machine lathe bed, including workstation, main shaft, install knife rest axle, linear guide, nut support, ball screw pair in the main shaft. Horizontal migration is made with ball screw pair cooperation drive workstation to the nut support on linear guide. The workstation is the T font, including portion of left wing, right flank portion and vertical portion, vertical portion sets up and supplies the passageway that reciprocates that the main shaft reciprocated, install the lift drive of driving spindle lift and the rotation driving device of the drive knife rest rotation of axes on the lateral wall of vertical portion, be equipped with the guiding mechanism who reciprocates the main shaft on the inside wall of vertical portion. Above -mentioned lift drive and rotation driving device install on the lateral wall of the vertical portion of T font workstation and are located the below of portion of left wing and right flank portion, make whole worktable mechenism's structure become compact and simple. In addition, guiding mechanism can prevent that the main shaft from taking place micro - displacement deviation when reciprocating.
Description
Technical field:
The utility model relates to gear-hobbing machine equipment, the table mechanism on a kind of chain digital control gear hobbing machine lathe bed.
Background technology:
Chain digital control gear hobbing machine, main shaft is installed on the table, and workbench moves back and forth back and forth on bed piece horizontal plane, completes machine Z-axis feeding; Knife rest is arranged on main shaft, and drive unit drives saddle rotation motion; Main shaft moves both vertically relative to workbench, i.e. X-axis feeding, to complete gear hobbing process.
Chain digital control gear hobbing machine of the prior art, main shaft and workbench adopt Split type structure, not only not easily make both coordinations, and the machining accuracy of workpiece is also difficult to control.Even if main shaft and workbench adopt integrative-structure, also make Working table structure too fat to move, action inconvenience.
Utility model content:
The technical problem that the utility model solves: chain digital control gear hobbing machine of the prior art, adopts main shaft and the workbench of integral structure, makes Working table structure too fat to move, action inconvenience.
The utility model provides following technical scheme:
A table mechanism on chain digital control gear hobbing machine lathe bed, comprises workbench, main shaft, knife rest, line slideway, nut bracket, the first ball wire bar pair;
Described first ball wire bar pair and line slideway are arranged on gear-hobbing machine lathe bed, and nut bracket coordinates with the first ball wire bar pair and drives workbench on line slideway, to make level to moving back and forth back and forth;
Described main shaft is installed on the table, main shaft hollow, and described knife rest is arranged on tool axis, and described tool axis is arranged in main shaft;
Described workbench is in T shape, and T-shaped workbench comprises left wing, right wing part and vertical portion; Described nut bracket is arranged in left wing, and described left wing and right wing part make level to moving back and forth back and forth on line slideway; Described vertical portion offer run through workbench up and down move up and down passage, described spindle mobility is plugged in and moves up and down in passage; The lateral wall of described vertical portion is provided with lifting drive, and lifting drive comprises the second ball wire bar pair, and the second ball wire bar pair drive shaft moves up and down moving up and down in passage; The lateral wall of described vertical portion is offered installation through hole, the sidewall of described main shaft is offered and slides through hole, the lateral wall of vertical portion is provided with rotating driving device, rotating driving device comprises bevel gear mechanism, and bevel gear mechanism is through installing through hole and sliding the tool axis rotation in through hole drive shaft;
The madial wall of described vertical portion is provided with guiding mechanism, and described guiding mechanism comprises the first little axle and the second little axle, the first roller and the second roller; Described first little axle and the second little axle are laterally fixed on the madial wall of vertical portion, and the first little axle and the second little axle are fixed on the madial wall of vertical portion in mode arranged side by side up and down; Described first roller housing is located on the first little axle, and described second roller housing is located on the second little axle; The lateral wall of described main shaft is offered about one straight trough moved towards, described first roller and the second roller are engaged in the straight trough of main shaft, the left and right sides of described first roller contacts with the left and right sides wall of straight trough, and the left and right sides of described second roller contacts with the left and right sides wall of straight trough; Described first little axle and on the first roller, described second little axle and on the second roller can move up and down relative to straight trough when main shaft moves up and down relative to workbench.
By technique scheme, the first ball wire bar pair is by driving workbench horizontal linear on line slideway to run with coordinating of nut bracket; The second ball wire bar pair drive shaft in lifting drive moves up and down moving up and down in passage of workbench; Rotating driving device by bevel gear mechanism by power transmission to tool axis, tool axis is rotated.Because workbench is in T shape, the sidewall that above-mentioned lifting drive and rotating driving device are arranged on T-shaped workbench vertical portion is positioned at the below of left wing and right wing part, so, whole table mechanism structure under function completely prerequisite is made to become compact and simple.
What another need stressed is, when main shaft does upper and lower displacement relative to workbench, namely main shaft workbench move up and down move up and down in passage time, first little axle and on parts and the second little axle and on parts can move up and down (certainly relative to straight trough, this is a kind of relative motion, and essence is straight trough along with main shaft moves up and down).Because the left and right sides of the first roller contacts with the left and right sides wall of straight trough, the left and right sides of the second roller contacts with the left and right sides wall of straight trough (external diameter being equivalent to the first roller and the second roller equals the left and right width of straight trough), so, can prevent main shaft from when moving up and down, microdisplacement deviation occurring.So, when guiding mechanism described in the utility model can make main shaft move up and down relative to workbench, accomplish vertical not deflection, and then improve the machining accuracy of product.
Describe in detail the one of above-mentioned lifting drive as the utility model, described lifting drive also comprises the first servomotor, the first shaft coupling, worm screw, worm gear, the first housing; The second nut that described second ball wire bar pair comprises the second ball screw, coordinates with the second ball screw; Described first housing is arranged on the sidewall of T-shaped workbench vertical portion, and the first shaft coupling, worm screw, worm gear are installed in the first housing, and the first servomotor is arranged on the first housing; Described second nut is arranged on the bottom of main shaft, and the second ball screw is vertically arranged, and worm gear is arranged on the second ball screw, and worm and wheel engages, and worm screw is connected with the motor shaft of the first servomotor by the first shaft coupling.Wherein, the bottom of described main shaft is provided with base plate, and described second nut is arranged on base plate.
Describe in detail the one of above-mentioned rotating driving device as the utility model, described rotating driving device also comprises the second servomotor, the second shaft coupling, gear shaft, the second housing, contiguous block, fixed cover; Described bevel gear mechanism comprises master bevel gear and secondary bevel gear; Described second housing is arranged on the sidewall of T-shaped workbench vertical portion, and the second shaft coupling, gear shaft are positioned at the second housing, and the second servomotor is installed on the second housing; The motor shaft of the second servomotor is connected with gear shaft by the second shaft coupling, master bevel gear is arranged on gear shaft, secondary bevel gear is arranged on tool axis, master bevel gear engages with secondary bevel gear, the upper sheathed bearing of secondary bevel gear, described fixed cover is set on bearing, and fixed cover is fixedly connected with contiguous block, and contiguous block is fixedly connected with the second housing.Based on above-mentioned explanation, the one as the utility model cutter setting frame axle illustrates, the top of described main shaft is provided with top board, and the top of described tool axis is articulated on top board, and secondary bevel gear is installed in the bottom of described tool axis.
Describe in detail the one of guiding mechanism as the utility model, described guiding mechanism also comprises the first ball and the second ball; Described first little axle offers the first axially extending bore, and the front end of the first axially extending bore is provided with the first constricted arc edge; Described first ball is arranged in the first axially extending bore, the first coil tension spring and the first bolt is provided with in first axially extending bore, first bolt is screwed onto in the first axially extending bore, and one end of the first coil tension spring is against on the first bolt, and the other end of the first coil tension spring is against on the first ball; First coil tension spring is by the first ball top to the first constricted arc edge, and the first ball and the first constricted arc edge are offseted, and the first ball part gives prominence to the top end face of the first little axle; Described second little axle offers the second axially extending bore, and the front end of the second axially extending bore is provided with the second constricted arc edge; Described second ball is arranged in the second axially extending bore, the second coil tension spring and the second bolt is provided with in second axially extending bore, second bolt is screwed onto in the second axially extending bore, and one end of the second coil tension spring is against on the second bolt, and the other end of the second coil tension spring is against on the second ball; Second coil tension spring is by the second ball top to the second constricted arc edge, and the second ball and the second constricted arc edge are offseted, and the second ball part gives prominence to the top end face of the second little axle; Described first ball all contacts with the bottom surface of straight trough with the second ball; Described first little axle and upper first ball thereof, described second little axle and on the second ball can move up and down relative to straight trough when main shaft moves up and down relative to workbench.
By the above-mentioned explanation to guiding mechanism, when main shaft does upper and lower displacement relative to workbench, namely main shaft workbench move up and down move up and down in passage time, the first little axle and on parts (comprising the first roller and the first ball) and the second little axle and on parts (comprising the second roller and the second ball) can move up and down relative to straight trough.Because the first ball all contacts with the bottom surface of straight trough with the second ball, namely the first ball and the second ball are against on the bottom surface of straight trough, with the microdisplacement deviation preventing main shaft from fore-and-aft direction occurring when moving up and down; Meanwhile, already described above, the first roller and the second roller can prevent main shaft from the microdisplacement deviation of left and right directions occurring when moving up and down; To sum up, when guiding mechanism can make main shaft move up and down relative to workbench, accomplish vertical not deflection, and then improve the machining accuracy of product.
Accompanying drawing illustrates:
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the structural representation of a kind of table mechanism be arranged on gear-hobbing machine lathe bed of the utility model;
Fig. 2 is the structural representation of rotating driving device 60 in Fig. 1;
Fig. 3 is the structural representation of lifting drive 50 in Fig. 1;
Fig. 4 is the combining structure schematic diagram of the first servomotor 52, first shaft coupling 53, worm screw 54 in lifting drive 50 described in the utility model;
Fig. 5 is the structural representation of guiding mechanism 70 described in the utility model;
Fig. 6 is the structural representation after installing the first ball 75 in the little axle 31 of the utility model first;
Fig. 7 is the sectional view of the first little axle 31 described in the utility model;
Fig. 8 is the combining structure schematic diagram of the first bolt 713, first coil tension spring 712, first ball 75 in the little axle 71 of the utility model first.
Symbol description in figure:
10, workbench; 11, left wing; 12, right wing part; 13, vertical portion; 130, through hole is slided;
20, main shaft; 200, straight trough; 21, base plate; 22, top board;
30, line slideway;
40, nut bracket;
50, lifting drive; 51, the second ball wire bar pair; 52, the first servomotor; 53, the first shaft coupling; 54, worm screw; 55, worm gear; 56, the first housing; 57, the second ball screw; 58, the second nut;
60, rotating driving device; 61, bevel gear mechanism; 62, the second servomotor; 63, the second shaft coupling; 64, gear shaft; 65, the second housing; 66, contiguous block; 67, fixed cover; 68, master bevel gear; 69, secondary bevel gear;
71, the first little axle; 710, the first axially extending bore; 711, the first constricted arc edge; 712, the first coil tension spring; 713, the first bolt; 72, the second little axle; 73, the first roller; 74, the second roller; 75, the first ball; 76, the second ball;
80, tool axis.
Detailed description of the invention:
As Fig. 1, the table mechanism on a kind of chain digital control gear hobbing machine lathe bed, comprises workbench 10, main shaft 20, knife rest, line slideway 30, nut bracket 40, first ball wire bar pair; Described first ball wire bar pair and line slideway are arranged on gear-hobbing machine lathe bed, and nut bracket coordinates with the first ball wire bar pair and drives workbench on line slideway, to make level to moving back and forth back and forth; Described main shaft is installed on the table, and main shaft hollow, described knife rest is arranged on tool axis 80, and described tool axis is arranged in main shaft.
As Fig. 1, described workbench is in T shape, and T-shaped workbench comprises left wing 11, right wing part 12 and vertical portion 13; Described nut bracket is arranged in left wing, and described left wing and right wing part make level to moving back and forth back and forth on line slideway; Described vertical portion offer run through workbench up and down move up and down passage, described spindle mobility is plugged in and moves up and down in passage.The lateral wall of described vertical portion is provided with lifting drive 50, lifting drive comprises the second ball wire bar pair 51, second ball wire bar pair drive shaft moving up and down in passage and moves up and down; The lateral wall of described vertical portion is offered installation through hole, the sidewall of described main shaft is offered and slides through hole 130, the lateral wall of vertical portion is provided with rotating driving device 60, rotating driving device comprises bevel gear mechanism 61, and bevel gear mechanism is through installing through hole and sliding the tool axis rotation in through hole drive shaft.The madial wall of described vertical portion is provided with guiding mechanism 70, and as Fig. 5, described guiding mechanism comprises the first little axle 71 and the second little axle 72, first roller 73 and the second roller 74; Described first little axle and the second little axle are laterally fixed on the madial wall of vertical portion, and the first little axle and the second little axle are fixed on the madial wall of vertical portion in mode arranged side by side up and down; Described first roller housing is located on the first little axle, and described second roller housing is located on the second little axle; The lateral wall of described main shaft is offered about one straight trough moved towards 200, described first roller and the second roller are engaged in the straight trough of main shaft, the left and right sides of described first roller contacts with the left and right sides wall of straight trough, and the left and right sides of described second roller contacts with the left and right sides wall of straight trough; Described first little axle and on the first roller, described second little axle and on the second roller can move up and down relative to straight trough when main shaft moves up and down relative to workbench.
Above-mentioned lifting drive 50, composition graphs 3, Fig. 4, also comprise the first servomotor 52, first shaft coupling 53, worm screw 54, worm gear 55, first housing 56; The second nut 58 that described second ball wire bar pair 51 comprises the second ball screw 57, coordinates with the second ball screw; Described first housing is arranged on the sidewall of T-shaped workbench vertical portion 13, and the first shaft coupling, worm screw, worm gear are installed in the first housing, and the first servomotor is arranged on the first housing; Described second nut is arranged on the bottom of main shaft, and the second ball screw is vertically arranged, and worm gear is arranged on the second ball screw, and worm and wheel engages, and worm screw is connected with the motor shaft of the first servomotor by the first shaft coupling.Wherein, as Fig. 1, the bottom of described main shaft 20 is provided with base plate 21, and described second nut 58 is arranged on base plate.
Above-mentioned rotating driving device 60, as Fig. 2, also comprises the second servomotor 62, second shaft coupling 63, gear shaft 64, second housing 65, contiguous block 66, fixed cover 67; Described bevel gear mechanism 61 comprises master bevel gear 68 and secondary bevel gear 69; Described second housing is arranged on the sidewall of T-shaped workbench vertical portion 13, and the second shaft coupling, gear shaft are positioned at the second housing, and the second servomotor is installed on the second housing; The motor shaft of the second servomotor is connected with gear shaft by the second shaft coupling, master bevel gear is arranged on gear shaft, secondary bevel gear is arranged on tool axis 80, master bevel gear engages with secondary bevel gear, the upper sheathed bearing of secondary bevel gear, described fixed cover is set on bearing, and fixed cover is fixedly connected with contiguous block, and contiguous block is fixedly connected with the second housing.Wherein, the top of described main shaft 20 is provided with top board 22, and the top of described tool axis 80 is articulated on top board, and described secondary bevel gear is arranged on the bottom of tool axis.
Above-mentioned guiding mechanism 70, as Fig. 5, also comprises the first ball 75 and the second ball 76.Composition graphs 6, Fig. 7, Fig. 8, the front end that described first little axle 71 offers the first axially extending bore 710, first axially extending bore is provided with the first constricted arc edge 711; Described first ball is arranged in the first axially extending bore, the first coil tension spring 712 and the first bolt 713 is provided with in first axially extending bore, first bolt is screwed onto in the first axially extending bore, and one end of the first coil tension spring is against on the first bolt, and the other end of the first coil tension spring is against on the first ball; First coil tension spring is by the first ball top to the first constricted arc edge, and the first ball and the first constricted arc edge are offseted, and the first ball part gives prominence to the top end face of the first little axle.Identical with the 26S Proteasome Structure and Function of the first little axle 71, described second little axle 72 offers the second axially extending bore, and the front end of the second axially extending bore is provided with the second constricted arc edge; Described second ball is arranged in the second axially extending bore, the second coil tension spring and the second bolt is provided with in second axially extending bore, second bolt is screwed onto in the second axially extending bore, and one end of the second coil tension spring is against on the second bolt, and the other end of the second coil tension spring is against on the second ball; Second coil tension spring is by the second ball top to the second constricted arc edge, and the second ball and the second constricted arc edge are offseted, and the second ball part gives prominence to the top end face of the second little axle.Described first ball 75 all contacts with the bottom surface of straight trough 200 with the second ball 76; Described first little axle and upper first ball thereof, described second little axle and on the second ball can move up and down relative to straight trough when main shaft 20 moves up and down relative to workbench 10.
In practical operation, the first ball wire bar pair is by driving workbench 10 horizontal linear on line slideway 30 to run with coordinating of nut bracket 40; The second ball wire bar pair 51 drive shaft 20 in lifting drive 50 moves up and down moving up and down in passage of workbench 10; Main shaft 20 moves up and down in the process moved up and down in passage at workbench 10, and guiding mechanism 70 pairs of main shafts 20 lead; Rotating driving device 60 by bevel gear mechanism 61 by power transmission to tool axis 80, tool axis 80 is rotated.
Above content is only better embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (6)
1. the table mechanism on chain digital control gear hobbing machine lathe bed, comprises workbench (10), main shaft (20), knife rest, line slideway (30), nut bracket (40), the first ball wire bar pair; Described first ball wire bar pair and line slideway are arranged on gear-hobbing machine lathe bed, and nut bracket coordinates with the first ball wire bar pair and drives workbench on line slideway, to make level to moving back and forth back and forth; Described main shaft is installed on the table, main shaft hollow, and described knife rest is arranged on tool axis (80), and described tool axis is arranged in main shaft;
It is characterized in that:
Described workbench is in T shape, and T-shaped workbench comprises left wing (11), right wing part (12) and vertical portion (13); Described nut bracket is arranged in left wing, and described left wing and right wing part make level to moving back and forth back and forth on line slideway; Described vertical portion offer run through workbench up and down move up and down passage, described spindle mobility is plugged in and moves up and down in passage;
The lateral wall of described vertical portion is provided with lifting drive (50), lifting drive comprises the second ball wire bar pair (51), and the second ball wire bar pair drive shaft moves up and down moving up and down in passage;
The lateral wall of described vertical portion is offered installation through hole, the sidewall of described main shaft is offered and slides through hole (130), the lateral wall of vertical portion is provided with rotating driving device (60), rotating driving device comprises bevel gear mechanism (61), and bevel gear mechanism is through installing through hole and sliding the tool axis rotation in through hole drive shaft;
The madial wall of described vertical portion is provided with guiding mechanism (70), and described guiding mechanism comprises the first little axle (71) and the second little axle (72), the first roller (73) and the second roller (74); Described first little axle and the second little axle are laterally fixed on the madial wall of vertical portion, and the first little axle and the second little axle are fixed on the madial wall of vertical portion in mode arranged side by side up and down; Described first roller housing is located on the first little axle, and described second roller housing is located on the second little axle; The lateral wall of described main shaft is offered about one straight trough moved towards (200), described first roller and the second roller are engaged in the straight trough of main shaft, the left and right sides of described first roller contacts with the left and right sides wall of straight trough, and the left and right sides of described second roller contacts with the left and right sides wall of straight trough; Described first little axle and on the first roller, described second little axle and on the second roller can move up and down relative to straight trough when main shaft moves up and down relative to workbench.
2. the table mechanism on a kind of chain digital control gear hobbing machine lathe bed as claimed in claim 1, is characterized in that: described lifting drive (50) also comprises the first servomotor (52), the first shaft coupling (53), worm screw (54), worm gear (55), the first housing (56); The second nut (58) that described second ball wire bar pair (51) comprises the second ball screw (57), coordinates with the second ball screw; Described first housing is arranged on the sidewall of T-shaped workbench vertical portion (13), and the first shaft coupling, worm screw, worm gear are installed in the first housing, and the first servomotor is arranged on the first housing; Described second nut is arranged on the bottom of main shaft, and the second ball screw is vertically arranged, and worm gear is arranged on the second ball screw, and worm and wheel engages, and worm screw is connected with the motor shaft of the first servomotor by the first shaft coupling.
3. the table mechanism on a kind of chain digital control gear hobbing machine lathe bed as claimed in claim 2, is characterized in that: the bottom of described main shaft (20) is provided with base plate (21), and described second nut (58) is arranged on base plate.
4. the table mechanism on a kind of chain digital control gear hobbing machine lathe bed as claimed in claim 1, is characterized in that: described rotating driving device (60) also comprises the second servomotor (62), the second shaft coupling (63), gear shaft (64), the second housing (65), contiguous block (66), fixed cover (67); Described bevel gear mechanism (61) comprises master bevel gear (68) and secondary bevel gear (69); Described second housing is arranged on the sidewall of T-shaped workbench vertical portion (13), and the second shaft coupling, gear shaft are positioned at the second housing, and the second servomotor is installed on the second housing; The motor shaft of the second servomotor is connected with gear shaft by the second shaft coupling, master bevel gear is arranged on gear shaft, secondary bevel gear is arranged on tool axis (80), master bevel gear engages with secondary bevel gear, the upper sheathed bearing of secondary bevel gear, described fixed cover is set on bearing, and fixed cover is fixedly connected with contiguous block, and contiguous block is fixedly connected with the second housing.
5. the table mechanism on a kind of chain digital control gear hobbing machine lathe bed as claimed in claim 4, it is characterized in that: the top of described main shaft (20) is provided with top board (22), the top of described tool axis (80) is articulated on top board, and secondary bevel gear is arranged on the bottom of tool axis.
6. the table mechanism on a kind of chain digital control gear hobbing machine lathe bed as claimed in claim 1, is characterized in that:
Described guiding mechanism (70) also comprises the first ball (75) and the second ball (76);
Described first little axle (71) offers the first axially extending bore (710), and the front end of the first axially extending bore is provided with the first constricted arc edge (711); Described first ball is arranged in the first axially extending bore, the first coil tension spring (712) and the first bolt (713) is provided with in first axially extending bore, first bolt is screwed onto in the first axially extending bore, one end of first coil tension spring is against on the first bolt, and the other end of the first coil tension spring is against on the first ball; First coil tension spring is by the first ball top to the first constricted arc edge, and the first ball and the first constricted arc edge are offseted, and the first ball part gives prominence to the top end face of the first little axle;
Described second little axle (72) offers the second axially extending bore, and the front end of the second axially extending bore is provided with the second constricted arc edge; Described second ball is arranged in the second axially extending bore, the second coil tension spring and the second bolt is provided with in second axially extending bore, second bolt is screwed onto in the second axially extending bore, and one end of the second coil tension spring is against on the second bolt, and the other end of the second coil tension spring is against on the second ball; Second coil tension spring is by the second ball top to the second constricted arc edge, and the second ball and the second constricted arc edge are offseted, and the second ball part gives prominence to the top end face of the second little axle;
Described first ball (75) all contacts with the bottom surface of straight trough (200) with the second ball (76); Described first little axle and upper first ball thereof, described second little axle and on the second ball can move up and down relative to straight trough when main shaft (20) moves up and down relative to workbench (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520386027.9U CN204771785U (en) | 2015-06-04 | 2015-06-04 | Worktable mechenism on numerical control gear -hobbing machine lathe bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520386027.9U CN204771785U (en) | 2015-06-04 | 2015-06-04 | Worktable mechenism on numerical control gear -hobbing machine lathe bed |
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| CN204771785U true CN204771785U (en) | 2015-11-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104827333A (en) * | 2015-06-04 | 2015-08-12 | 浙江日创机电科技有限公司 | Worktable mechanism on numerically-controlled gear hobbing machine tool |
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2015
- 2015-06-04 CN CN201520386027.9U patent/CN204771785U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104827333A (en) * | 2015-06-04 | 2015-08-12 | 浙江日创机电科技有限公司 | Worktable mechanism on numerically-controlled gear hobbing machine tool |
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