CN101239408A - Outer cone thread cutting processing mechanism - Google Patents

Outer cone thread cutting processing mechanism Download PDF

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Publication number
CN101239408A
CN101239408A CNA2007100670592A CN200710067059A CN101239408A CN 101239408 A CN101239408 A CN 101239408A CN A2007100670592 A CNA2007100670592 A CN A2007100670592A CN 200710067059 A CN200710067059 A CN 200710067059A CN 101239408 A CN101239408 A CN 101239408A
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CN
China
Prior art keywords
main shaft
sleeve
awl bar
bar
axial
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Granted
Application number
CNA2007100670592A
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Chinese (zh)
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CN100584498C (en
Inventor
余志军
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Zhejiang Lianqiang Cnc Machine Tool Co Ltd
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Zhejiang Lianqiang Cnc Machine Tool Co Ltd
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Priority to CN200710067059A priority Critical patent/CN100584498C/en
Publication of CN101239408A publication Critical patent/CN101239408A/en
Application granted granted Critical
Publication of CN100584498C publication Critical patent/CN100584498C/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention relates to an outer cone thread cutting machining device, comprising a framework, a cone bar, a drive unit, a cutting unit, a screw mandrel pair unit and a control unit. A main shaft, a sleeve cylinder and the framework are sleeved on sequentially with an axial center of the conical bar. Different conical segments are disposed at the head part of the conical bar. A corresponding adhesion unit is disposed in the inner cavity of the main shaft head to implement coarse and fine twice cutting thread by a master form. The invented device can machine coarse and fine twice cutting thread automatically, and is provided with a cutter quick back off function. The cutter and the thread machining surface don't contact with each other during the back off process of the cutter. Only the master form and the conical bar are replaced for processing different threads. The invented device is provided with a broad utilization, a high efficiency and a low cost, and can be disposed on a multi-station disc type exclusive machining tool for processing automatic machining.

Description

Outer cone thread cutting processing mechanism
Technical field
The invention belongs to metal cutting processing equipment mechanism, specifically a kind of outer cone thread cutting processing mechanism.
Background technology
The valve body of valve industry relates to externally threaded processing, processing method mainly is following two kinds at present, the one, adopt the taper bolt die to process, the 2nd, adopt the processing of numerically controlled lathe programming carrying out multitool, it is big to adopt the bolt die processing method to exist the cutting moment of torque, and required motor power is big, very big to the clamping force need of anchor clamps, and exist several to move back the dental impression mark when moving back tooth, influence the surface quality of screw thread.Adopting the numerically controlled lathe cutting method to exist can only process on unit, and the cost of equipment is higher, can not be applied to the shortcoming of processing on the turntable type process line.
Summary of the invention
The object of the present invention is to provide a kind of outer cone thread cutting processing mechanism that is configured on the disc type multistation special plane.
Realize that the concrete mode of technical scheme of the present invention is: it mainly comprises frame, the awl bar, drive disk assembly, cutting part, screw pair parts and control assembly, the head of awl bar is provided with different awl sections, with the main shaft is the axle center, the awl bar is set in the centre bore of main shaft to slide up and down with it and cooperates, the two ends of main shaft are connected with the driven pulley of cutting part and drive disk assembly respectively, driven gear, sleeve set is connected with its bearing by two ends on main shaft, frame is set on the sleeve and is in axial sliding connection with it, one side of frame is provided with axial elongated hole, corresponding section on the sleeve is connected with and protrudes out the outer feed screw nut's bearing of elongated hole, screw mandrel passes the feed screw nut's bearing that is connected on the sleeve, two ends are hinged on the screw rodb base that is connected on the frame, one end end sleeve of screw mandrel is connected with driven gear, and be connected the driving gear of main shaft and match with side end, the tail end and the hydraulic means that is connected with the coaxial setting of piston of awl bar, the inner chamber of spindle nose has elongated slot vertically, be equipped with wobble component in the groove, this wobble component is by the connecting rod that is hinged in the main shaft elongated slot, the bearing that is connected to the connecting rod two ends constitutes, cutting part is connected the spindle nose end face, by frid, planker, cutter chuck is formed, cutter chuck is fixed on the planker, carriage rail is loaded in the frid, the frid bottom is provided with perforate, the corresponding position of planker has groove, one end of wobble component passes the frid hole stretches in the planker groove, and wobble component radially wobbles the planker radial motion of moving cutting part with forward (FWD) because of the position variation of the awl bar of fitting along main shaft; Can also be provided with the suspension type rotational isolator between awl bar tail end and the axial hydraulic device, to connect the piston rod of awl bar and hydraulic means; Also have in order selectivity to limit the axial displacement of boring bar,, the hydraulic means that piston radial is provided with can also be set between mainshaft gear and the axial hydraulic device at this end of awl bar afterbody.
Outer cone thread cutting processing mechanism of the present invention, the version that is adopted has following advantage: the one,, make outer cone thread processing realize the machining mode that cutting force is smaller.The 2nd,, can be configured in and carry out automation processing on the multi-station disc type special purpose machine tool.The 3rd,, realize function rough turn, finish turning secondary cutting screw thread automatically.The 4th,, possess and guarantee all the time in rapid return function and the fall back process that cutter does not contact with the screw thread machined surface.The 5th,, process the awl bar that different screw threads only need be changed the screw thread pattern, widely applicable, versatility is good.The 6th,, working ability is strong, the work efficiency height, the cost of charp tool is low.
Description of drawings
Fig. 1 be embodiments of the invention one the outer cone thread cutting processing mechanism front view
Fig. 2 is the outer cone thread cutting processing mechanism left view of embodiments of the invention one
Fig. 3 is the outer cone thread cutting processing mechanism right view of embodiments of the invention one
Fig. 4 is the outer cone thread cutting processing mechanism B-B cutaway view of embodiments of the invention two
Fig. 5 is the outer cone thread cutting processing mechanism C-C cutaway view of embodiments of the invention two
Fig. 6 is that the outer cone thread cutting processing mechanism P of embodiments of the invention three is to partial view
The specific embodiment
The present invention is further illustrated below in conjunction with embodiment, and following embodiment only is used to illustrate technical scheme of the present invention, but to not restriction of the present invention.
Embodiment one
As shown in Fig. 1 to 6, outer cone thread cutting processing mechanism of the present invention is by frame 1, sleeve 2, awl bar 3, main shaft 4, drive disk assembly 5, cutting part 6, screw pair parts 7, rotational isolator 8 and control assembly 9, drive disk assembly 5 comprises driven pulley 5a, driving gear 5b1, driven gear 5b2, cutting part 6 is by frid 61, planker 62, cutter chuck 63 is formed, screw pair parts 7 are by screw mandrel 71, be connected feed screw nut and seat 72 on the sleeve, be connected the screw rodb base 73a on the frame, 73b forms, control assembly 9 comprises axial hydraulic device 91 and hydraulic radial device 92, rotational isolator 8 is a flange form, last dish 81 interlocks mutually with piston rod in the axial hydraulic device 91, and lower wall 82 is hung the tail end of boring bar 3.Whole outer cone thread cutting processing mechanism is the axle center with main shaft 4, awl bar 3 is set in the centre bore of main shaft 4 to slide up and down with it and cooperates, the two ends of main shaft 4 are connected with the driven pulley 5a of cutting part 6 and drive disk assembly 5 respectively, driving gear 5b1, sleeve 2 is set on the main shaft 4 and is connected with its bearing by two ends, frame 1 is set on the sleeve 2 and its flexible connection, one side of frame 1 is provided with axial elongated hole 11, corresponding section on the sleeve 2 is connected with and protrudes out the outer feed screw nut's bearing 72 of elongated hole, screw mandrel 71 passes the feed screw nut's bearing 72 that is connected on the sleeve 2, two ends are hinged at the screw rodb base 73a that is connected on the frame 1, on the 73b, one end end sleeve of screw mandrel 71 is connected with driven gear 5b2, with be connected the driving gear 5b1 of main shaft 4 and match with side end, the tail end of awl bar 3 is provided with 91 with axial hydraulic and is connected, the inner chamber of main shaft 4 heads has elongated slot 41 vertically, be equipped with wobble component 10 in the groove, this wobble component 10 is by the connecting rod 10a that is hinged in main shaft elongated slot 41, be connected to the bearing 10b at connecting rod 10a two ends, 10c constitutes, cutting part 6 is connected main shaft 4 head end, by frid 61, planker 62, cutter chuck 63 is formed, cutter chuck 63 is fixed on planker 62, carriage rail 62 is loaded in the frid 61, frid 61 bottoms are provided with perforate 61a, the corresponding position of planker 62 has groove 62a, one end of wobble component 10 passes frid hole 61a stretches in the planker groove 62a, be provided with rotational isolator 8 between awl bar 3 tail ends and the axial hydraulic device 91, also be driven to rotate with the parts of avoiding main axis rotation hydraulic means 91, bore bar 3 tail ends in addition, also be also to be provided with hydraulic radial device 92 between driving gear 5b1 and the axial hydraulic device 91 on the main shaft 4, be used for taper rod shaft spacing to the spacing that moves.
The thread generator reason, threading tool produces to rotatablely move and moves axially according to certain pitch simultaneously, be that main shaft 4 circles, move axially T pitch, the screw thread of this outer cone thread cutting processing mechanism produce by be arranged on the frame 1 and sleeve 2 on the screw pair parts realize, by among the figure as can be known, after main shaft 4 rotates, drive driving gear 5b1 and driven gear 5b2 gear motion, thereby drive screw mandrel 71 rotations, screw mandrel 71 rotates and drives sleeve 2 again and follow feed screw nut's bearing 72 and move axially.
Rotatablely moving of cutter drives main shaft 4 rotations through the transmission gland by spline by belt wheel 5a input, simultaneously cutter rotatablely moved (main motion).
Moving axially of cutter and moving synchronously of tube 2, the realization that sleeve 2 is set the pitch displacement is: by transmission gland warp, gear pair transmission (its gearratio is 1: 1), move axially through feed screw nut's subband moving sleeve 2, it moves axially with main shaft 4 rotations and forms inside-connecting relation, be that main shaft 4 circles, sleeve 2 moves fixing pitch Tmm.
During startup, the driven pulley 41a that belt drives on the main shaft 4 drives main shaft 4 rotations, the cutting part 6 that 4 on main shaft drives the termination rotates, with driving 7 motions of screw pair parts by driving gear 5b1, the driven gear 5b2 engagement that is connected afterbody again, screw mandrel 71 drives sleeve 2 again and moves axially, thereby reaches the purpose of cutter circular motion and axial feed cutting workpiece.
The setting of center cone bar 3 then is because of adopting the pattern method, and the taper thread bus is the oblique line of a certain angle, and it forms mechanism is when cutter moves axially, and radially also moving linearly according to a certain percentage forms an oblique bus thus.When sleeve 2 moves axially, because bearing is along pasting awl bar 3 surfaces, when moving to the conical surface, force connecting rod 10a swing, drive planker 62 and do radial motion, realize being equal to the bus of cone angle like this, just realize the processing of taper when cutter rotates with awl bar 3.
By among the figure as can be known, when sleeve 2 moves axially, because bearing is along pasting awl bar 3 surfaces, when moving to the conical surface, force connecting rod 10a swing, drive planker 62 and do radial motion, realize being equal to the bus of cone angle like this, just realize the processing of taper when cutter rotates with the awl bar.
Thick smart secondary cutting realization mechanism, the cutting depth of cutter determined by the axial location of awl bar 3, and the axial location of awl bar 3 by with the axial hydraulic device 91 of awl bar 3 coaxial settings in piston rod 91a drive; Shown position is cutter position when essence is cut for the second time, when carrying out rough lumber, piston rod 92a is overhanging in the hydraulic radial device 92 is inserted on the main shaft 4 between the driving gear 5b1 and axial hydraulic device 91, piston rod 91a in axial hydraulic device 91 (seeing that P is in partial view) is when moving right, owing to stopping of piston rod 92a in the hydraulic radial device 92 makes its axial restricted mobile Δ S that reduces, owing to exist Δ S can obtain the chipping allowance Δ T that finish turning is used, Δ T=Δ Stg θ, θ: awl bar 3 semi-cone angle, therefore can obtain different Δ T by adjusting Δ S value.
The rapid return realization mechanism, awl bar 3 is made up of the cone of two sections different conical surfaces, when processing puts in place, be that bearing 10b is in the small end than the small-angle cone, in piston rod 91a moves right in the axial hydraulic device 91 (main hold axle) to low order end, awl bar 3 is also corresponding to be moved to it and is in the low order end position, this moment, the cone surface of big cone angle contacted with bearing 10b, force planker 62 to do moving radially of awl bar 3, so realize the function of its rewind down withdrawing along frid 61.When sleeve 2 was return, awl bar 3 positions when boring bar 3 positions with cutting during owing to withdrawing produced axial alternate position spike S, and cutter is thrown off and manufactured thread surface formation gap all the time when guaranteeing withdrawing at this moment, makes its not scratch surface.

Claims (3)

1. outer cone thread cutting processing mechanism, it is characterized in that: it mainly comprises frame, the awl bar, main shaft, drive disk assembly, cutting part, screw pair parts and control assembly, the head of awl bar is provided with different awl sections, with the main shaft is the axle center, the awl bar is set in the spindle hole to slide up and down with it and cooperates, the two ends of main shaft are connected with the driven pulley of cutting part and drive disk assembly respectively, driven gear, sleeve set is connected with its bearing by two ends on main shaft, frame is set on the sleeve and is in axial sliding connection with it, one side of frame is provided with axial elongated hole, corresponding section on the sleeve is connected with and protrudes out the outer feed screw nut's bearing of elongated hole, screw mandrel passes the feed screw nut's bearing that is connected on the sleeve, two ends are hinged on the screw rodb base that is connected on the frame, one end end sleeve of screw mandrel is connected with driven gear, with be connected the driving gear of main shaft and match with side end, the tail end of awl bar and the hydraulic means that is connected with axial setting, the inner chamber of spindle nose has elongated slot vertically, be equipped with wobble component in the groove, this wobble component is by the connecting rod that is hinged in the main shaft elongated slot, the bearing that is connected to the connecting rod two ends constitutes, cutting part is connected the spindle nose end face, by frid, planker, cutter chuck is formed, cutter chuck is fixed on planker, carriage rail is loaded in the frid, the frid bottom is provided with perforate, the corresponding position of planker has groove, and an end of wobble component passes the frid hole stretches in the planker groove.
2. outer cone thread cutting processing mechanism as claimed in claim 1 is characterized in that: also be provided with rotational isolator between described awl bar tail end and the axial hydraulic device.
3. outer cone thread cutting processing mechanism as claimed in claim 2 is characterized in that: described awl bar tail end also is provided with the hydraulic radial device between mainshaft gear and the axial hydraulic device.
CN200710067059A 2007-02-07 2007-02-07 Outer cone thread cutting processing mechanism Expired - Fee Related CN100584498C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200710067059A CN100584498C (en) 2007-02-07 2007-02-07 Outer cone thread cutting processing mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200710067059A CN100584498C (en) 2007-02-07 2007-02-07 Outer cone thread cutting processing mechanism

Publications (2)

Publication Number Publication Date
CN101239408A true CN101239408A (en) 2008-08-13
CN100584498C CN100584498C (en) 2010-01-27

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Application Number Title Priority Date Filing Date
CN200710067059A Expired - Fee Related CN100584498C (en) 2007-02-07 2007-02-07 Outer cone thread cutting processing mechanism

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102658402A (en) * 2012-04-19 2012-09-12 莱芜钢铁集团有限公司 Lathe and tapered tread processing device thereof
CN103551679A (en) * 2013-10-17 2014-02-05 南车株洲电机有限公司 Non-standard thread machining method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102658402A (en) * 2012-04-19 2012-09-12 莱芜钢铁集团有限公司 Lathe and tapered tread processing device thereof
CN103551679A (en) * 2013-10-17 2014-02-05 南车株洲电机有限公司 Non-standard thread machining method

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Granted publication date: 20100127

Termination date: 20160207