CN104439556B - Heavy accurate digital control gear-hobbing machine hob head - Google Patents
Heavy accurate digital control gear-hobbing machine hob head Download PDFInfo
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- CN104439556B CN104439556B CN201410832944.5A CN201410832944A CN104439556B CN 104439556 B CN104439556 B CN 104439556B CN 201410832944 A CN201410832944 A CN 201410832944A CN 104439556 B CN104439556 B CN 104439556B
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Abstract
nullThe present invention relates to machine tool field，A kind of heavy accurate digital control gear-hobbing machine hob head，Including column slide，It is characterized in that column slide is provided with rotating seat、Tool-post structure、Electronic floating tensioning mechanism、Electronic active tensioning mechanism、Tool-post structure driving means、Tailstock driving means and hobboing cutter assembly，The slideway that described tool-post structure lower end is provided with through lower slider guide rail and rotating seat is slidably connected，It is slidably connected with the tailstock in electronic floating tensioning mechanism through upper rail plate on the left of upper end，Fix with electronic active tensioning mechanism on the right side of upper end and be connected，Described tool-post structure front end is provided with tailstock driving means，Rear end is provided with tool-post structure driving means，Described hobboing cutter assembly one end fixes through electronic floating tensioning mechanism，The other end fixes through electronic active tensioning mechanism，Effectively prevent location or positioned inaccurate problem，Can automatically compensate the thermal stretching of axis system in working angles，It is greatly reduced in working angles heat in metal cutting to hobboing cutter service life and the impact of part processing precision.
Description
Technical field
The present invention relates to machine tool technology field, a kind of heavy accurate digital control gear-hobbing machine hob head.
Background technology
At present, the hob head of domestic existing large-scale gear hobbing machine is lightweight construction, main shaft bearing typically uses sliding bearing or master end list hydrostatic bearing structure (such as public announcement of a patent application number: CN102059408A), typically have the feature that under the conditions of heavy cut, main shaft bearing is particularly easy to abrasion, often causes Gear Processing precision to reduce because of main shaft precision stability difference；Main shaft rigidity is not enough, it is impossible to meeting heavy load cutting, roughing feed cutting requirement, working (machining) efficiency is low；Hobboing cutter tool changing many employings manual mode, cutter tension is fluid-pressure straining device, and structure is complicated, response speed is slow, and main shaft both sides mostly are rigidity take-up device, it is impossible to automatically compensate the thermal stretching of axis system in working angles, affect the service life of hobboing cutter and the machining accuracy of part.
Summary of the invention
Present invention aim to address above-mentioned the deficiencies in the prior art, it is provided that the heavy accurate digital control gear-hobbing machine hob head that a kind of processing precise is high, precision stability is good, heavy load cutting power is strong, working (machining) efficiency is high.
The technical scheme of heavy type accurate digital control gear-hobbing machine hob head of the present invention is:
nullA kind of heavy accurate digital control gear-hobbing machine hob head，Including column slide，It is characterized in that column slide is provided with rotating seat、Tool-post structure、Electronic floating tensioning mechanism、Electronic active tensioning mechanism、Tool-post structure driving means、Tailstock driving means and hobboing cutter assembly，The slideway that described tool-post structure lower end is provided with through lower slider guide rail and rotating seat is slidably connected，It is slidably connected with the tailstock in electronic floating tensioning mechanism through upper rail plate on the left of upper end，Fix with electronic active tensioning mechanism on the right side of upper end and be connected，Described tool-post structure front end is provided with tailstock driving means，Rear end is provided with tool-post structure driving means，Described hobboing cutter assembly one end fixes through electronic floating tensioning mechanism，The other end fixes through electronic active tensioning mechanism，It is beneficial to be prevented effectively from location or positioned inaccurate problem，Reach automatically to compensate the thermal stretching of axis system in working angles，It is greatly reduced in working angles heat in metal cutting to hobboing cutter service life and the impact of part processing precision.
nullElectronic active tensioning mechanism of the present invention includes hydrostatic spindle、Main static pressure axle sleeve、Long draw、Location bearing、Locating ring、Driving wheel、Main broaching tool claw、Auxiliary spring bearing and main electronic tension cylinder，Location taper hole and pull bar drive hole it is sequentially provided with from front to back in described hydrostatic spindle，It is machined with main static pressure axle sleeve on external cylindrical surface the most successively and coordinates face、The shaft shoulder and the installation conical surface，The main static pressure axle sleeve of described hydrostatic spindle outer surface coordinates face to be provided with main static pressure axle sleeve，The shaft shoulder is respectively provided on two sides with location bearing and driving wheel，The conical surface is installed and is provided with auxiliary spring bearing，The pull bar drive hole of described hydrostatic spindle is provided with main broaching tool claw and long draw，Described hydrostatic spindle front end is provided with locating ring，Rear end is provided with main electronic tension cylinder，Described hydrostatic spindle is connected with tool-post structure through main static pressure axle sleeve，It is connected with column slide with location bearing through auxiliary spring bearing，Described driving wheel is located in column slide，Described long draw one end is fixing with main broaching tool claw to be connected，The other end is connected with main electronic tension cylinder，Before being beneficial to drive main broaching tool claw by main electronic tension cylinder, in-migration reaches to catch on hobboing cutter assembly，Reach the effect that right-hand member is automatically positioned.
nullElectronic floating tensioning mechanism of the present invention includes axle sleeve、Auxiliary electric tension cylinder、Pull bar、Broaching tool claw、Axially position bearing、Elastic pretension dish、Bearing race、Adpting flange、Spacer、Locking nut and ring flange，Inner hole of shaft sleeve right-hand member is machined with taper hole，It is machined with static pressure axle sleeve on external cylindrical surface and coordinates face、The location bearing installation shaft shoulder，Described axle sleeve outer end axially positions bearing through being provided with、Elastic pretension dish、Bearing race、Spacer、Locking nut、Ring flange and static pressure axle sleeve are fixed with tailstock and are connected，Endoporus is provided with pull bar and broaching tool claw，Described axle sleeve front end is provided with auxiliary electric tension cylinder，Described pull bar one end is fixing with auxiliary electric tension cylinder to be connected，The other end is fixing with broaching tool claw to be connected，It is beneficial to be driven the broaching tool claw reach tension hobboing cutter assembly left end of pull bar front end by auxiliary electric tension cylinder，Reach the effect that left end is automatically positioned.
The present invention also can be provided with support, lead, inductive disks and detection switch on electronic floating tensioning mechanism, described auxiliary electric tension cylinder rear end is provided with lead, inductive disks is arranged on lead, described ring flange front end is fixing with support to be connected, described detection switch is fixed on support and corresponding with inductive disks, is beneficial to detect tailstock tool changing point position signalling.
nullTool-post structure driving means of the present invention is by tool-post structure servomotor、Motor mounting plate、Bearing block、Drive gear、Travelling gear、Screw mandrel spring bearing、Ball wire bar pair and connecting plate composition，The described ball wire bar pair connecting plate through being fixed on nut is fixing with rotating seat right-hand member to be connected，Described ball wire bar pair right-hand member screw mandrel spring bearing in bearing block is connected with travelling gear，Described tool-post structure servomotor is connected with the driving gear in bearing block through motor mounting plate，Described driving gear is meshed with travelling gear，Described bearing block is fixing with the gear-box of column slide to be connected，It is beneficial to by servomotor action，Ball wire bar pair is passed motion to through driving gear pair，Drive tool-post structure and the electronic active in the right side tensioning mechanism of Spindle Static pressure device being mounted thereon、Tailstock is together to left movement，Make the electronic active in the right side tensioning mechanism of Spindle Static pressure device slowly close to hobboing cutter assembly，Reach self-holding effect.
nullTailstock driving means of the present invention includes that tailstock drives motor、Motor mounting plate、Driving gear pair、Screw mandrel spring bearing、Bearing block、Connect seat、Ball wire bar pair、Screw mounting seat、Tail spindle bearing sleeve and spring bearing，Driving gear pair it is provided with from front to back on described ball screw、Screw mandrel spring bearing、Connect seat、Screw、Screw mounting seat and spring bearing、Tail spindle bearing sleeve，Described ball screw is through spring bearing、Tail spindle bearing sleeve is inserted in the pilot hole that tailstock bottom is provided with，Middle part is connected with tailstock through screw mounting seat，It is anterior that through connecting, seat and tool-post structure are fixing to be connected，Described bearing block front end is fixing with tailstock driving motor to be connected，It is provided with driving gear pair in described bearing block，It is beneficial to drive motor action by tailstock，Ball wire bar pair is passed motion to through driving gear pair，Move right together with tailstock and the electronic floating tensioning mechanism that is mounted thereon，Make electronic floating tensioning mechanism slowly close to hobboing cutter assembly，Together hobboing cutter assembly is clamped together with electronic active tensioning mechanism.
Hobboing cutter assembly of the present invention includes hob rod, hobboing cutter, sleeve I, sleeve II, flat key, hydraulic locking nut, blind rivet I and blind rivet II, described hobboing cutter is fixed on hob rod by sleeve I, sleeve II, flat key and hydraulic locking nut, hob rod right-hand member is machined with taper shank and is provided with blind rivet I, and hob rod left end is machined with taper shank and is provided with blind rivet II.
Hob rod right-hand member of the present invention is also machined with straight end-face key mounting groove, and described hob rod is connected through straight end-face key mounting groove and main shaft are fixing through straight end-face key, is beneficial to transmit main-shaft torque to hobboing cutter assembly.
The invention has the beneficial effects as follows: this heavy accurate digital control gear-hobbing machine hob head main shaft uses the design of big span hydrostatic bearing, and base bearing loading capability is big, precision stability good, can meet heavy load cutting, roughing feed cutting requirement, stock-removing efficiency is high；Hobboing cutter tension uses electronic take-up device, has simple in construction, and response is fast, strains stable advantage；On the right side of static pressure spindle device, electronic active tensioning mechanism uses electronic tension, taper shank location mode, on the left of main shaft, electronic floating tensioning mechanism uses electronic floating tension, taper shank location mode, effectively prevent location or positioned inaccurate problem, can automatically compensate the thermal stretching of axis system in working angles, be greatly reduced in working angles heat in metal cutting to hobboing cutter service life and the impact of part processing precision.
Accompanying drawing explanation
Fig. 1 is hob head overall structure schematic diagram.
Fig. 2 is static pressure spindle device structural representation.
Fig. 3 is knife rack feed apparatus structural representation.
Fig. 4 is tailstock feed arrangement structural representation.
Fig. 5 is toolbox structural representation.
Label in figure:
null1 rotating seat、2 tool-post structures、3 electronic active tensioning mechanisms、4 tailstocks、5 tool-post structure driving means、6 tailstock driving means、7 hobboing cutter assemblies、8 main static pressure axle sleeves、9 static pressure axle sleeves、10 main shafts、11 main electronic tension cylinders、12 long draws、13BT60 broaching tool claw、14 location bearings 15 assist spring bearing、16 axle sleeves、17 auxiliary electric tension cylinders、18 pull bars、19BT50 broaching tool claw、20 location bearings、21 elastic pretension dishes、22 bearing races、23 adpting flanges、24 spacers、25 locking nuts、26 ring flanges、27 supports、28 inductive disks、29 leads、30 detection switches、31 main servo motors、32 motor mounting plates、33 bearing blocks、34-35 travelling gear、36 screw mandrel spring bearings、37 ball wire bar pairs、38 connecting plates、39 tailstocks drive motor、40 motor mounting plates、41 driving gear pairs、42 screw mandrel spring bearings、43 bearing blocks、44 connect seat、45 ball screws、46 screw mounting seats、47 tail spindle bearing sleeves、48 spring bearings、49 hob rods、50 hobboing cutters、51 sleeves I、52 sleeves II、53 flat keys、54 hydraulic locking nuts、55 blind rivets I、56 blind rivets II、57 straight end-face keys、58 electronic floating tensioning mechanisms、Locating ring 59、Driving wheel 60.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
nullAs shown in drawings，A kind of heavy accurate digital control gear-hobbing machine hob head，Including column slide，It is characterized in that column slide is provided with rotating seat 1、Tool-post structure 2、Electronic floating tensioning mechanism 58、Electronic active tensioning mechanism 3、Tool-post structure driving means 5、Tailstock driving means 6 and hobboing cutter assembly 7，The slideway that described tool-post structure 2 lower end is provided with through lower slider guide rail and rotating seat 1 is slidably connected，It is slidably connected with the tailstock 4 in electronic floating tensioning mechanism 58 through upper rail plate on the left of upper end，Fix with electronic active tensioning mechanism 3 on the right side of upper end and be connected，Described tool-post structure 2 front end is provided with tailstock driving means 6，Rear end is provided with tool-post structure driving means 5，Described hobboing cutter assembly 7 one end fixes through electronic floating tensioning mechanism 58，The other end fixes through electronic active tensioning mechanism 3，It is beneficial to be prevented effectively from location or positioned inaccurate problem，Reach automatically to compensate the thermal stretching of axis system in working angles，It is greatly reduced in working angles heat in metal cutting to hobboing cutter service life and the impact of part processing precision.
nullElectronic active tensioning mechanism 3 of the present invention includes hydrostatic spindle 10、Main static pressure axle sleeve 8、Long draw 12、Location bearing 14、Locating ring 59、Driving wheel 60、The main broaching tool claw of BT60 13、Auxiliary spring bearing 15 and main electronic tension cylinder 11，Location taper hole and pull bar drive hole it is sequentially provided with from front to back in described hydrostatic spindle 10，It is machined with main static pressure axle sleeve on external cylindrical surface the most successively and coordinates face、The shaft shoulder and the installation conical surface，The main static pressure axle sleeve of described hydrostatic spindle 10 outer surface coordinates face to be provided with main static pressure axle sleeve 8，The shaft shoulder is respectively provided on two sides with location bearing 14 and driving wheel 60，The conical surface is installed and is provided with auxiliary spring bearing 15，The pull bar drive hole of described hydrostatic spindle 10 is provided with the main broaching tool claw of BT60 13 and long draw 12，Described hydrostatic spindle 10 front end is provided with locating ring 59，Rear end is provided with main electronic tension cylinder 11，Described hydrostatic spindle 10 is connected with tool-post structure 2 through main static pressure axle sleeve 8，It is connected with column slide with location bearing 14 through auxiliary spring bearing 15，Described driving wheel 60 is located in column slide，Described long draw 12 one end broaching tool claw main with BT60 13 is fixing to be connected，The other end is connected with main electronic tension cylinder 11，Before being beneficial to drive the main broaching tool claw of BT60 13 by main electronic tension cylinder 11, in-migration reaches to catch on hobboing cutter assembly 7，Reach the effect that right-hand member is automatically positioned.
nullElectronic floating tensioning mechanism 58 of the present invention includes axle sleeve 16、Auxiliary electric tension cylinder 17、Pull bar 18、Broaching tool claw 19、Axially location bearing 20、Elastic pretension dish 21、Bearing race 22、Adpting flange 23、Spacer 24、Locking nut 25 and ring flange 26，Axle sleeve 16 endoporus right-hand member is machined with BT50 taper hole，It is machined with static pressure axle sleeve 9 on external cylindrical surface and coordinates face、The location bearing 20 installation shaft shoulder，Described axle sleeve outer end is through being provided with axially location bearing 20、Elastic pretension dish 21、Bearing race 22、Spacer 24、Locking nut 25、Ring flange 26 and static pressure axle sleeve 9 are fixed with tailstock 4 and are connected，Endoporus is provided with pull bar 18 and BT50 broaching tool claw 19，Described axle sleeve 16 front end is provided with auxiliary electric tension cylinder 17，Described pull bar 18 one end is fixing with auxiliary electric tension cylinder 17 to be connected，The other end is fixing with BT50 broaching tool claw 19 to be connected，It is beneficial to be driven BT50 broaching tool claw 19 reach tension hobboing cutter assembly 7 left end of pull bar 18 front end by auxiliary electric tension cylinder 17，Reach the effect that left end is automatically positioned.
The present invention also can be provided with support 27, lead 29, inductive disks 28 and detection switch 30 on electronic floating tensioning mechanism 58, described auxiliary electric tension cylinder 17 rear end is provided with lead 29, inductive disks 28 is arranged on lead 29, described ring flange 26 front end is fixing with support 27 to be connected, described detection switch 30 is fixed on support 27 and corresponding with inductive disks 28, is beneficial to detect tailstock tool changing point position signalling.
nullTool-post structure driving means 5 of the present invention is by tool-post structure servomotor 31、Motor mounting plate 32、Bearing block 33、Drive gear 34、Travelling gear 35、Screw mandrel spring bearing 36、Ball wire bar pair 37 and connecting plate 38 form，The described ball wire bar pair 37 connecting plate 38 through being fixed on nut is fixing with rotating seat 1 right-hand member to be connected，Described ball wire bar pair 37 right-hand member screw mandrel spring bearing 36 in bearing block 33 is connected with travelling gear 35，Described tool-post structure servomotor 31 is connected with the driving gear 34 in bearing block 33 through motor mounting plate 32，Described driving gear 34 is meshed with travelling gear 35，Described bearing block 33 is fixing with the gear-box of column slide to be connected，It is beneficial to by servomotor action，Ball wire bar pair 37 is passed motion to through driving gear pair 34-35，Drive tool-post structure 2 and the electronic active in the right side tensioning mechanism of Spindle Static pressure device being mounted thereon、Tailstock 4 is together to left movement，Make the electronic active in the right side tensioning mechanism of Spindle Static pressure device slowly close to hobboing cutter assembly 7，Reach self-holding effect.
nullTailstock driving means of the present invention includes that tailstock drives motor 39、Motor mounting plate 40、Driving gear pair 41、Screw mandrel spring bearing 42、Bearing block 43、Connect seat 44、Ball wire bar pair 45、Screw mounting seat 46、Tail spindle bearing sleeve 47 and spring bearing 48，Driving gear pair 41 it is provided with from front to back on described ball wire bar pair 45、Screw mandrel spring bearing 42、Connect seat、43 screws、Screw mounting seat 46 and spring bearing 48、Tail spindle bearing sleeve 47，Described ball wire bar pair 45 is through spring bearing 42、Tail spindle bearing sleeve 47 is inserted in the pilot hole that tailstock 4 bottom is provided with，Middle part is connected with tailstock 4 through screw mounting seat 46，It is anterior that through connecting, seat 44 is fixing with tool-post structure 2 to be connected，Described bearing block 43 front end is fixing with tailstock driving motor 39 to be connected，It is provided with driving gear pair 41 in described bearing block 43，It is beneficial to drive motor 39 action by tailstock，Ball wire bar pair 45 is passed motion to through driving gear pair 41，Move right together with tailstock 4 and the electronic floating tensioning mechanism that is mounted thereon，Make electronic floating tensioning mechanism slowly close to hobboing cutter assembly 7，Together hobboing cutter assembly is clamped together with electronic active tensioning mechanism.
Hobboing cutter assembly of the present invention includes hob rod 49, hobboing cutter 50, sleeve I 51, sleeve II 52, flat key 53, hydraulic locking nut 54, blind rivet I 55 and blind rivet II 56, described hobboing cutter 50 is fixed on hob rod 49 by sleeve I 51, sleeve II 52, flat key 53 and hydraulic locking nut 54, hob rod right-hand member is machined with BT60 taper shank and is provided with blind rivet I 55, and hob rod left end is machined with BT50 taper shank and is provided with blind rivet II 56.
Hob rod right-hand member of the present invention is also machined with straight end-face key mounting groove, and described hob rod is connected through straight end-face key mounting groove and main shaft are fixing through straight end-face key, is beneficial to transmit main-shaft torque to hobboing cutter assembly.
The installation process of this heavy type accurate digital control gear-hobbing machine hob head hobboing cutter assembly is: be vertically placed on work platforms by hob rod 49, first flat key 53 is arranged on knife bar 49, once load sleeve I 51, hobboing cutter 50, sleeve II 52, lock firmly with precise hydraulic locking nut 54, the knife bar installed is lain in knife brackets, hob rod left and right sides BT60 blind rivet I 55 and BT50 blind rivet II 56, hobboing cutter assembly 7 installation are installed again.
nullThis heavy type accurate digital control gear-hobbing machine hob head cutter changing work process is as follows: mounted hobboing cutter assembly 7 knife brackets is transported to gear-hobbing machine tool changing point position，Gear-hobbing machine digital control system sends tool changing instruction，Servomotor 31 action in tool-post structure driving means 5，Ball wire bar pair 37 is passed motion to through driving gear pair 34-35，Drive tool-post structure 2 and the electronic active in the right side tensioning mechanism of Spindle Static pressure device being mounted thereon、Tailstock 4 is together to left movement，The electronic active in the right side tensioning mechanism of Spindle Static pressure device is slowly close to hobboing cutter assembly 7，After tool-post structure moves to arrive tool-post structure tool changing point，Tool-post structure servomotor 31 stops action，Digital control system sends master end tension instruction，Main electronic tension cylinder 11 action，Long draw 12 and BT60 broaching tool claw 13 is driven to move right，Claw on BT60 broaching tool claw 13 hooks the boss of the BT60 blind rivet I 55 of hobboing cutter assembly 7 right-hand member，BT60 taper shank on the right side of hob rod 49 is close proximity in the BT60 taper hole of main shaft 10 left end，After tension puts in place，Main electronic tension cylinder 11 stops action，Realize static pressure spindle device master end tensioning action；nullDigital control system sends secondary side tension instruction，Tailstock in tailstock driving means 6 drives motor 39 action，Ball wire bar pair 45 is passed motion to through driving gear pair 41，Tailstock 4 and the left side electronic floating tensioning mechanism of Spindle Static pressure device that is mounted thereon is driven to move right together，The electronic floating in the left side tensioning mechanism of Spindle Static pressure device is slowly close to hobboing cutter assembly 7，Hob rod 49 left surface is close and oppresses the lead 29 being arranged in axle sleeve 16，Drive inductive disks 28 to left movement，After detection switch 30 senses and sends signal，Tailstock drives motor 39 to stop action，Arrive tailstock tool changing point，After time delay 1 second，Auxiliary electric tension cylinder 17 action，Drive pull bar 18 and BT50 broaching tool claw 19 to left movement，Claw on BT50 broaching tool claw 19 hooks the boss of the BT50 blind rivet II 56 of hobboing cutter assembly 7 left end，BT50 taper shank on the left of hob rod 49 is close proximity in the BT50 taper hole of axle sleeve 16 right-hand member，Because hobboing cutter assembly 7 has been in position stationary state，So that elastic pretension dish 21 oppressed by axle sleeve 16 realizes floating clamping mechanism，Auxiliary electric tension cylinder 17 stops action，Realize static pressure spindle device 3 secondary side tensioning action，Hob head cutter tensioning action completes.
The invention has the beneficial effects as follows: this heavy accurate digital control gear-hobbing machine hob head main shaft uses the design of big span hydrostatic bearing, and base bearing loading capability is big, precision stability good, can meet heavy load cutting, roughing feed cutting requirement, stock-removing efficiency is high；Hobboing cutter tension uses electronic take-up device, has simple in construction, and response is fast, strains stable advantage；On the right side of static pressure spindle device, electronic active tensioning mechanism uses electronic tension, taper shank location mode, on the left of main shaft, electronic floating tensioning mechanism uses electronic floating tension, taper shank location mode, effectively prevent location or positioned inaccurate problem, can automatically compensate the thermal stretching of axis system in working angles, be greatly reduced in working angles heat in metal cutting to hobboing cutter service life and the impact of part processing precision.
Claims (8)
1. a heavy accurate digital control gear-hobbing machine hob head, including column slide, it is characterized in that column slide is provided with rotating seat, tool-post structure, electronic floating tensioning mechanism, electronic active tensioning mechanism, tool-post structure driving means, tailstock driving means and hobboing cutter assembly, the slideway that described tool-post structure lower end is provided with through lower slider guide rail and rotating seat is slidably connected, it is slidably connected with the tailstock in electronic floating tensioning mechanism through upper rail plate on the left of upper end, fix with electronic active tensioning mechanism on the right side of upper end and be connected, described tool-post structure front end is provided with tailstock driving means, rear end is provided with tool-post structure driving means, described hobboing cutter assembly one end fixes through electronic floating tensioning mechanism, the other end fixes through electronic active tensioning mechanism.
nullA kind of heavy accurate digital control gear-hobbing machine hob head the most according to claim 1，It is characterized in that described electronic active tensioning mechanism includes hydrostatic spindle、Main static pressure axle sleeve、Long draw、Location bearing、Locating ring、Driving wheel、Main broaching tool claw、Auxiliary spring bearing and main electronic tension cylinder，Location taper hole and pull bar drive hole it is sequentially provided with from front to back in described hydrostatic spindle，It is machined with main static pressure axle sleeve on external cylindrical surface the most successively and coordinates face、The shaft shoulder and the installation conical surface，The main static pressure axle sleeve of described hydrostatic spindle outer surface coordinates face to be provided with main static pressure axle sleeve，The shaft shoulder is respectively provided on two sides with location bearing and driving wheel，The conical surface is installed and is provided with auxiliary spring bearing，The pull bar drive hole of described hydrostatic spindle is provided with main broaching tool claw and long draw，Described hydrostatic spindle front end is provided with locating ring，Rear end is provided with main electronic tension cylinder，Described hydrostatic spindle is connected with tool-post structure through main static pressure axle sleeve，It is connected with column slide with location bearing through auxiliary spring bearing，Described driving wheel is located in column slide，Described long draw one end is fixing with main broaching tool claw to be connected，The other end is connected with main electronic tension cylinder.
A kind of heavy accurate digital control gear-hobbing machine hob head the most according to claim 1, it is characterized in that described electronic floating tensioning mechanism includes axle sleeve, auxiliary electric tension cylinder, pull bar, broaching tool claw, axially position bearing, elastic pretension dish, bearing race, adpting flange, spacer, locking nut and ring flange, inner hole of shaft sleeve right-hand member is machined with taper hole, it is machined with static pressure axle sleeve on external cylindrical surface and coordinates face, the location bearing installation shaft shoulder, described axle sleeve outer end axially positions bearing through being provided with, elastic pretension dish, bearing race, spacer, locking nut, ring flange and static pressure axle sleeve are fixed with tailstock and are connected, endoporus is provided with pull bar and broaching tool claw, described axle sleeve front end is provided with auxiliary electric tension cylinder, described pull bar one end is fixing with auxiliary electric tension cylinder to be connected, the other end is fixing with broaching tool claw to be connected.
A kind of heavy accurate digital control gear-hobbing machine hob head the most according to claim 3, it is characterized in that described electronic floating tensioning mechanism is provided with support, lead, inductive disks and detection switch, described auxiliary electric tension cylinder rear end is provided with lead, inductive disks is arranged on lead, described ring flange front end is fixing with support to be connected, and described detection switch is fixed on support and corresponding with inductive disks.
A kind of heavy accurate digital control gear-hobbing machine hob head the most according to claim 1, it is characterized in that described tool-post structure driving means is by tool-post structure servomotor, motor mounting plate, bearing block, drive gear, travelling gear, screw mandrel spring bearing, ball wire bar pair and connecting plate composition, the described ball wire bar pair connecting plate through being fixed on nut is fixing with rotating seat right-hand member to be connected, described ball wire bar pair right-hand member screw mandrel spring bearing in bearing block is connected with travelling gear, described tool-post structure servomotor is connected with the driving gear in bearing block through motor mounting plate, described driving gear is meshed with travelling gear, described bearing block is fixing with the gear-box of column slide to be connected.
nullA kind of heavy accurate digital control gear-hobbing machine hob head the most according to claim 1，It is characterized in that described tailstock driving means includes that tailstock drives motor、Motor mounting plate、Driving gear pair、Screw mandrel spring bearing、Bearing block、Connect seat、Ball wire bar pair、Screw mounting seat、Tail spindle bearing sleeve and spring bearing，Driving gear pair it is provided with from front to back on described ball screw、Screw mandrel spring bearing、Connect seat、Screw、Screw mounting seat and spring bearing、Tail spindle bearing sleeve，Described ball screw is through spring bearing、Tail spindle bearing sleeve is inserted in the pilot hole that tailstock bottom is provided with，Middle part is connected with tailstock through screw mounting seat，It is anterior that through connecting, seat and tool-post structure are fixing to be connected，Described bearing block front end is fixing with tailstock driving motor to be connected，It is provided with driving gear pair in described bearing block，It is beneficial to drive motor action by tailstock，Ball wire bar pair is passed motion to through driving gear pair，Move right together with tailstock and the electronic floating tensioning mechanism that is mounted thereon，Make electronic floating tensioning mechanism slowly close to hobboing cutter assembly，Together hobboing cutter assembly is clamped together with electronic active tensioning mechanism.
A kind of heavy accurate digital control gear-hobbing machine hob head the most according to claim 1, it is characterized in that described hobboing cutter assembly includes hob rod, hobboing cutter, sleeve I, sleeve II, flat key, hydraulic locking nut, blind rivet I and blind rivet II, described hobboing cutter is fixed on hob rod by sleeve I, sleeve II, flat key and hydraulic locking nut, hob rod right-hand member is machined with taper shank and is provided with blind rivet I, and hob rod left end is machined with taper shank and is provided with blind rivet II.
A kind of heavy accurate digital control gear-hobbing machine hob head the most according to claim 7, it is characterised in that hob rod right-hand member is machined with straight end-face key mounting groove, described hob rod is connected through straight end-face key mounting groove and main shaft are fixing through straight end-face key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410832944.5A CN104439556B (en) | 2014-12-29 | 2014-12-29 | Heavy accurate digital control gear-hobbing machine hob head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410832944.5A CN104439556B (en) | 2014-12-29 | 2014-12-29 | Heavy accurate digital control gear-hobbing machine hob head |
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| Publication Number | Publication Date |
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| CN104439556A CN104439556A (en) | 2015-03-25 |
| CN104439556B true CN104439556B (en) | 2016-08-03 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4759113A (en) * | 1987-06-10 | 1988-07-26 | The Gleason Works | Hob clamping system |
| IT1248225B (en) * | 1991-05-31 | 1995-01-05 | Cima | TOOTHING MACHINE WITH CREATOR SUPPORT WITHOUT CREATOR HOLDER SHAFT |
| CN102059408B (en) * | 2010-12-21 | 2012-06-27 | 齐重数控装备股份有限公司 | Main shaft device for numerical controlled gear hobbing machine |
| CN104001991B (en) * | 2014-06-13 | 2016-01-27 | 重庆机床(集团)有限责任公司 | Gear-hobbing machine knife bar automatic tensioner |
| CN203972985U (en) * | 2014-06-30 | 2014-12-03 | 南京金宇刀具制造有限公司 | A kind of automatic loose broaching tool main shaft device |
| CN204366199U (en) * | 2014-12-29 | 2015-06-03 | 威海华东重工有限公司 | A kind of heavy accurate digital control gear-hobbing machine hob head |
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