CN102814511B - Numerical control screw thread repairs the detection adjusting apparatus and method of helical trajectory on lathe spindle - Google Patents
Numerical control screw thread repairs the detection adjusting apparatus and method of helical trajectory on lathe spindle Download PDFInfo
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- CN102814511B CN102814511B CN201210116915.XA CN201210116915A CN102814511B CN 102814511 B CN102814511 B CN 102814511B CN 201210116915 A CN201210116915 A CN 201210116915A CN 102814511 B CN102814511 B CN 102814511B
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Abstract
The present invention provides the adjusting apparatus that a kind of numerical control screw thread repairs the intrinsic helical trajectory of point of a knife on lathe spindle, it is characterised in that：The device mainly includes lathe bed, headstock and tail platform；Headstock and tail platform are arranged on lathe bed, the main shaft that can be rotated is horizontally installed with headstock, servomotor is provided with rear side of headstock and drives the rotatable spindle encoder of lower casing, be separately installed with front chuck and rear chuck on the front-end and back-end of main shaft；The multigroup carrying roller of bracket is additionally provided with the side of lathe bed；One end of headstock is provided with positioning wimble device in tail platform, and the phase detection sensor for screw thread phase place detection of electrons positioning is additionally provided between headstock and tail platform.Invention significantly improves technical merit, quality level and economic benefit that drill rod thread is repaired.
Description
Technical field
Patent of the present invention is used for metal cutting process field, is related to numerical control pipe thread lathe to used petroleum drilling
The inside and outside old thread at the long tube class workpiece such as bar, drill collar two ends is carried out in reparation turning function, changes intrinsic knife on lathe spindle
The device of point cutting helical trajectory.
Background technology
In oil and geological drilling industry, pierce the deep drill bit of a few kms in underground be all by hundreds of drilling rod and drill collar, according to
Screw thread by its two ends is screwed one by one, and is connected with ground drill, and torque is passed by ground drill by these drilling rods, drill collar
Pass drill bit.These drilling rods, drill collar after the drilling well for completing a bite well works need unload one by one, reclaim, keeping in repair, and
It is used in turn repeatedly.In drilling rod, the maintenance work of drill collar, turning repair is carried out to the inside and outside taper joint screw thread at its two ends and is added
Work is one of most important work.There is substantial amounts of taper tool joint thread to need to repair turnery processing every year.
At present, people are in mechanical type to the reparation turnery processing of drilling rod, the taper tool joint thread at drill collar two ends
Pipe threading machine on, completed by workman's manual operations.The reason for implementing manual operations machinery lathe reparation turning taper thread
It is, manual operations easily first can be transferred to point of a knife in the groove of screw thread, then spin relative to workpiece in cutter and be moved through
Cheng Zhong, by two side surfaces of original old triangle thread, equably car goes one layer, by corrosion, spot corrosion, glue trace, bruise mark and should
Power fatigue layer car goes, and reaches the processing request for repairing screw thread.This mechanical type repairs the advantage of turning tapered thread：Screw thread
Radial cutting amount is little, and the length dimension decrement for allowing for repairing every time drilling rod after screw thread according to the principle of taper is little, drilling rod
Repairing number of times increases, and the service life of drilling rod extends.
In mechanical manufacturing field, there is processing spiral shell using CNC Lathe Turning taper thread ratio using mechanical type lathe turning
The obvious technical advantage such as stricture of vagina high precision, surface quality are good, working (machining) efficiency is high, therefore numerically controlled lathe be widely used in new screw thread
In manufacture processing.In the cutted thread function of existing numerically controlled lathe at present, as long as thread parameter and Cutting tool installation manner position etc.
After factor determines, the point of a knife of cutter relative to every lathe spindle spiral movement locus be all fixed, intrinsic, and each
This intrinsic helical trajectory of lathe is but different, but this intrinsic point of a knife helical trajectory is that people are only be unable to sense organ again
Learn.Just because of this intrinsic rule of point of a knife helical trajectory, for existing spiral shell on random clamping to lathe spindle chuck
Intrinsic point of a knife cutting helical trajectory on the restoration of old ways workpiece to be repaired of stricture of vagina, its workpiece helix and machine tool chief axis is misaligned, and this two
Phase contrast between individual helix is in random law, and point of a knife can not be existing so as to there is disorderly button along the Pocket Machining of workpiece old thread
As.According to current numerically controlled lathe technical merit, numerical control is repaired the way of screw thread and is exactly fallen old thread from the outside all cars of tooth root,
New car of laying equal stress on goes out new screw thread.The deficiency of turning tapered thread is repaired in numerical control under this technical merit：The radial cutting of screw thread
Amount is big, and after turning, the length dimension decrement of drilling rod is big, and the reparation number of times of drilling rod is reduced, and economic benefit is not good.Here it is at present
Numerically controlled lathe can be not applied directly to the sole cause in old thread Repair gene field.
Produce the reason for intrinsic helical trajectory of point of a knife is immutable on lathe spindle and be that lathe is in cutted thread process
In, the average and transient state rule that the lengthwise movement of cutter turns 1 circle knife rest 1 helical pitch of movement by workpiece all the time followed by main shaft
Rotary motion, the computer of digital control system during calculating and controlling this function need to obtain main shaft any time
Position signalling.People are mounted with that on spindle stock a rotary encoder, its stator casing are fixedly mounted on headstock
On, its rotor spindle nose is 1 with lathe spindle：1 ratio transmissions, the rotary encoder is spindle encoder.
Lathe spindle turns 1 circle, and the rotor of spindle encoder just turns 1 circle.Encoder rotor can all send fixed number per 1 circle is turned
The electric impulse signal of amount, in addition when encoder rotor is relative to a certain fixed position of stator, can also send an expression " O "
The electric impulse signal of position, this " O " position are random and fixed.On main shaft the phase place of the intrinsic helical trajectory of point of a knife just and this
The absolute position of " O " position signalling is relevant.Therefore, digital control system is after this regular signals are received, the controlled master for obtaining
On axle, the phase place of the intrinsic helical trajectory of point of a knife also just necessarily presents random and fixed rule.
Content of the invention
Goal of the invention：The present invention provides a kind of dress for changing the intrinsic helical trajectory of point of a knife on numerical control screw thread reparation lathe spindle
Put and method, its objective is to solve in the past during thread turning repaired by workpiece, due to the intrinsic spiral shell of point of a knife on fixed main shaft
The screw thread that rotation track is misaligned with the helix of the two-start screw to be repaired of random installation and produces disorderly detains problem.
Technical scheme：The present invention is achieved through the following technical solutions：
A kind of numerical control screw thread repairs the adjusting apparatus of the intrinsic helical trajectory of point of a knife on lathe spindle, it is characterised in that：The dress
Put；Headstock and tail platform are arranged on lathe bed, are horizontally installed with to do in headstock and are revolved
The dynamic main shaft of transhipment, is provided with servomotor on rear side of headstock and drives the rotatable spindle encoder of lower casing, in main shaft
Front-end and back-end on be separately installed with front chuck and rear chuck；The multigroup carrying roller of bracket is additionally provided with the side of lathe bed；In tail
Platform is provided with positioning wimble device towards one end of headstock, is additionally provided with for screw thread phase place electronics between headstock and tail platform
The phase detection sensor of detection positioning.
Tail platform is arranged on lathe bed by what guide rail can be moved forward and backward, is additionally provided with promotion tail platform and moves forward and backward on lathe bed
Hydraulic jack.
Positioning wimble device is by the structure for axially and radially locating of workpiece to be repaired when using.
Positioning wimble device is the locating cone nested structure that can be enclosed within external screw thread to be repaired, the internal diameter of the positioning wimble device with outer
The major diameter of thread of screw thread workpiece to be repaired is engaged.
Positioning wimble device is the locating cone axle construction that can put in inside tapered thread to be repaired, the external diameter of the positioning wimble device with interior
The bottom diameter of screw thread workpiece to be repaired is engaged.
Phase detection sensor is contact or noncontacting proximity sensor.
Spindle encoder is 1 with spindle drive ratio：1.
Above-mentioned numerical control screw thread is applied to repair the numerical control screw thread implemented by the adjusting apparatus of the intrinsic helical trajectory of point of a knife on lathe
Repair the moving method of the intrinsic helical trajectory of point of a knife on lathe, it is characterised in that：The step of the method, is as follows：By workpiece to be repaired
Through after main shaft and rear chuck front chuck, front-end of spindle is reached, tail platform is moved forward under the promotion of hydraulic jack, before making tail platform
The positioning wimble device that end is installed is engaged with the old taper thread in workpiece front end, is successively clamped rear chuck and front chuck, is return tail platform, this
When, the axially and radially position of the workpiece old thread to be repaired being installed on main shaft is determined by positioning wimble device, circumference position
Puts still be random law.Using screw thread phase place detection of electrons alignment sensor, the high point of helix on the specific bus of screw thread is measured
Or low spot to screw thread fixed end face distance determining screw thread phase place, if having measured before and being stored in phase detection device
In lathe spindle inherently cut certain low spot of helical trajectory to the distance of screw thread end face be L0, and the workpiece of this measurement
This distance be L1, then the two-start screw to be repaired of this clamping to the phase contrast α of the intrinsic screw cutting track of point of a knife on main shaft be：
Wherein：T is pitch；
N=0,1；
360 ° of 0≤α ＜
Servomotor drive shaft encoder housing is made to rotate α degree angle (even if the absolute position of encoder " 0 " position signalling
Rotate α degree angle), now, intrinsic point of a knife cutting helical trajectory on lathe spindle just be clamped on lathe spindle chuck
The helix that drilling rod, drill collar workpiece etc. have had old thread to be repaired on whorl work piece coincides, and workpiece location and installation has worked
Into.
When screw thread to be repaired is external screw thread, it is the structure that can be enclosed within two-start screw periphery to be repaired to position wimble device, fixed
The internal diameter of position wimble device is engaged with the external diameter of two-start screw to be repaired.
When screw thread to be repaired is female thread, positioning wimble device is to put in the structure in two-start screw to be repaired, positioning
The external diameter of wimble device is engaged with the internal diameter of female thread to be repaired.
Advantage and effect：
The present invention provides a kind of dress that repairs in numerical control screw thread and change the intrinsic helical trajectory phase place of point of a knife on main shaft on lathe
Put and method, mainly include the two parts such as encoder turn device and electronic phase angle detection means.The present invention will fix peace originally
The encoder stator casing structure being mounted on headstock, changing into encoder stator casing can rotate relative to headstock housing,
The rotation is driven by a servomotor, and the angle of rotation is by digital control system according to detected workpiece screw thread phase place to be processed
Data Control is obtained.Slewing area is 360°Within.
When the drilling rod workpiece of an old thread to be repaired, determine in lathe main axis hole axial location and radial position it
Afterwards, after clamping, the chuck of front end two, now workpiece be clamped on main shaft, the axially and radially position of workpiece it has been determined that but
The circumferential phase of its two-start screw to be repaired still assumes random law.Now, the electronic phase angle detection means in the present invention is applied
Phase place of the measurement random installation to workpiece on main shaft two-start screw to be repaired.By this detection data and known main shaft upper slitter before
Sharp spiral movement locus compare, and obtain its phase contrast.Digital control system control servomotor drive shaft encoder shell turns
Dynamic, the angle of rotation is equal to this phase difference value, and apparatus and method achieve the tune of the intrinsic helical trajectory of point of a knife on main shaft according to this
Whole and change, it is achieved that the intrinsic point of a knife on main shaft cuts helical trajectory and is installed to restoration of old ways drilling rod to be repaired on lathe spindle chuck
The technical requirements that coincide of threaded line, and then reach the target that cutted thread is repaired in numerical control.The present invention can realize treating
Turning is repaired in the numerical control for repairing old thread, and the accuracy of screw machining that it collects numerically controlled lathe is high, surface quality is good, high in machining efficiency
The screw thread of advantage and mechanical lathe repairs that radial cutting amount is little, run of steel loses little advantage in one, and the present invention is significantly carried
Technical merit, quality level and economic benefit that high drill rod thread is repaired.
Description of the drawings：
Fig. 1 is the structural representation of the present invention.
Specific embodiment：The present invention will be further described below in conjunction with the accompanying drawings：
As shown in figure 1, the present invention provides the adjustment dress that a kind of numerical control screw thread repairs the intrinsic helical trajectory of lathe spindle point of a knife
Put, the device mainly includes lathe bed 1, headstock 8 and tail platform 3；Headstock 8 and tail platform 3 are arranged on lathe bed 1, water in headstock 8
Safety is separately installed with front chuck 6 and rear chuck 9 equipped with the main shaft 7 that can be rotated in the front-end and back-end of main shaft 7；?
The side of lathe bed 1 is additionally provided with the bracket with multigroup carrying roller 10；One end of headstock 8 is provided with locating cone in tail platform 3
Device 4, is additionally provided with the phase detection sensor 11 for screw thread phase place detection of electrons positioning between headstock 8 and tail platform 3.
In the rear side of headstock 8, it is provided with servomotor and drives the rotatable spindle encoder 12 of lower casing.Phase detection sensor 11
For contact or noncontacting proximity sensor.Spindle encoder 12 is 1 with 7 gear ratio of main shaft：1.
Tail platform 3 is arranged on lathe bed 1 by what guide rail can be moved forward and backward, before and after being additionally provided with promotion tail platform 3 on lathe bed 1
Mobile hydraulic jack 2.Positioning wimble device 4 is by the structure for axially and radially locating of workpiece to be repaired when using.
Positioning wimble device 4 is two kinds, as follows：
Positioning wimble device 4 is the locating cone nested structure that can be enclosed within outer cone thread to be repaired, the internal diameter of the positioning wimble device
It is engaged with the major diameter of thread of external screw thread workpiece to be repaired.
Positioning wimble device 4 for putting in the locating cone axle construction of inside tapered thread to be repaired, the external diameter of the positioning wimble device with
The bottom diameter of female thread workpiece to be repaired is engaged.
Situation when taper thread shown in accompanying drawing for be repaired on workpiece 5 is external screw thread, at this moment positioning wimble device 4 is disk
The inner conical drogue of sub- shape；If taper thread to be repaired is female thread on workpiece 5, positioning wimble device 4 is just locating shaft, and accompanying drawing is illustrated
Be state that workpiece 5 is being coordinated with positioning sleeve.
In addition the present invention also provides the intrinsic spiral of point of a knife on a kind of measurement data enforcement main shaft by detecting positioner
The step of workpiece localization method of track adjustment, the method, is as follows：In the presence of the multigroup carrying roller 10 of bracket, by 5 front end of workpiece
After old taper thread partially passes through main shaft 7 and rear chuck 9 and front chuck 6, reach at the positioning wimble device of tail platform front end, tail
Platform 3 is moved to spindle end under the promotion of hydraulic jack 2, and the old taper thread in 5 front end of workpiece is engaged with positioning wimble device.When to be repaired
When multiple workpiece screw thread is external screw thread, it is the structure that can be enclosed within two-start screw periphery to be repaired to position wimble device, positions wimble device
Internal diameter is engaged with the external diameter of two-start screw to be repaired；When screw thread to be repaired is female thread, positioning wimble device is treated for putting in
The structure in screw thread is repaired, the external diameter for positioning wimble device is engaged with the internal diameter of female thread to be repaired.Now, workpiece old thread phase
For main shaft axial, radially and circumferentially position be determined, but circumferential position is random.Rear chuck 9 and front is clamped successively
Chuck 6, hydraulic jack 2 drive tail platform 3 to back to rear position, complete the clamping process of workpiece.Using screw thread phase place detection of electrons
Alignment sensor, the fixed end face distance for measuring the high point of helix on the specific bus of screw thread or low spot to screw thread is determining screw thread
Phase place, if measured before and be stored in point of a knife on the lathe spindle in phase detection device inherently cut helical trajectory
Certain low spot to screw thread end face distance be L0, and this distance of the workpiece of this measurement is L1, then this clamping is to be repaired
Two-start screw to the phase contrast α of intrinsic point of a knife screw cutting track on main shaft is：
Wherein：T is pitch；
N=0,1；
360 ° of 0≤α ＜
Servomotor drive shaft encoder housing is made to rotate α degree angle (even if the absolute position of encoder " 0 " position signalling
Have rotated α degree angle), now, intrinsic point of a knife cutting helical trajectory on lathe spindle just be clamped on lathe spindle chuck
Drilling rod, the helix that had old thread to be repaired on whorl work piece such as drill collar workpiece coincide, workpiece location and installation works
Complete.
Thereby guarantee that during follow-up thread turning, point of a knife can be aligned in the groove of old thread, in cutter and work
During the spiral of part is with respect to turning campaign, it is ensured that the two sides of old angular thread can equably be cut one layer by cutter, reach reparation
The job requirement of screw thread.
After shown in the drawings of application apparatus of the present invention, the critical piece relevant with positioning and clamping workpiece, lathe on lathe
On saddle, slide plate, the part such as knife rest repeat.
Claims (7)
1. a kind of numerical control screw thread repairs the adjusting apparatus of the intrinsic helical trajectory of point of a knife on lathe spindle, it is characterised in that：The device
Mainly include lathe bed (1), headstock (8) with tail platform (3)；(3) (8) headstock is arranged on tail platform on lathe bed (1), in headstock (8)
The main shaft (7) that can be rotated is horizontally installed with, and servomotor is provided with rear side of headstock (8) and drives lower casing turn
Dynamic spindle encoder (12), is separately installed with front chuck (6) and rear chuck (9) on the front-end and back-end of main shaft (7)；In bed
The side of body (1) is additionally provided with the multigroup carrying roller of bracket (10)；The one end of tail platform (3) towards headstock (8) is provided with locating cone dress
Put (4), headstock (8) with tail platform (3) between be additionally provided with for screw thread phase place detection of electrons positioning phase detection sensor
⑾；
(4) positioning wimble device is by the structure for axially and radially locating of workpiece to be repaired when using；Concrete form is following two
Kind：
Positioning wimble device locating cone nested structure (4) for being enclosed within external screw thread to be repaired, the internal diameter of the positioning wimble device and outer spiral shell
The major diameter of thread of stricture of vagina workpiece to be repaired is engaged；
Positioning wimble device is (4) for can put in the locating cone axle construction of inside tapered thread to be repaired, the external diameter of the positioning wimble device and interior spiral shell
The bottom diameter of stricture of vagina workpiece to be repaired is engaged.
2. numerical control screw thread according to claim 1 repairs the adjusting apparatus of the intrinsic helical trajectory of point of a knife on lathe spindle, its
It is characterised by：(3) tail platform is arranged on lathe bed (1) by what guide rail can be moved forward and backward, on lathe bed (1) is additionally provided with promotion tail
The hydraulic jack that (3) platform moves forward and backward is (2).
3. numerical control screw thread according to claim 1 repairs the adjusting apparatus of the intrinsic helical trajectory of point of a knife on lathe spindle, its
It is characterised by：(11) phase detection sensor is contact or noncontacting proximity sensor.
4. numerical control screw thread according to claim 1 repairs the adjusting apparatus of the intrinsic helical trajectory of point of a knife on lathe spindle, its
It is characterised by：Spindle encoder (12) is 1 with main shaft (7) gear ratio：1.
5. on the numerical control screw thread reparation lathe spindle described in application claim 1, the adjusting apparatus institute of the intrinsic helical trajectory of point of a knife is real
The numerical control screw thread that applies repairs the moving method of the intrinsic helical trajectory of point of a knife on lathe, it is characterised in that：The step of the method, is as follows：
Workpiece to be repaired (5) is reached front-end of spindle through main shaft (7) and after rear chuck (9) front chuck (6), tail platform (3) is in hydraulic oil
Move forward under the promotion of cylinder (2), the positioning wimble device for installing tail platform front end is engaged with the old taper thread in workpiece (5) front end,
Rear chuck (9) and front chuck (6) is clamped successively, tail platform (3) is return, now, the workpiece to be repaired (5) that is installed on main shaft (7)
The axially and radially position of old thread is determined that circumferential position is still random law by positioning wimble device；Using screw thread phase place
Detection of electrons alignment sensor, measures the high point of helix on the specific bus of screw thread or low spot to the fixed end face distance of screw thread
Determine screw thread phase place, if the lathe spindle for having measured before and being stored in phase detection device inherently cuts helical trajectory
Certain low spot to screw thread end face distance be L0, and this distance of the workpiece of this measurement is L1, then this clamping treat
Repairing screw thread to the phase contrast α of the intrinsic screw cutting track of point of a knife on main shaft is：
Wherein：T is pitch；
N=0,1；
360 ° of 0≤α ＜
Servomotor drive shaft encoder housing is made to rotate α degree angle, even if the absolute position of encoder " 0 " position signalling rotates
α degree angle, now, intrinsic point of a knife cutting helical trajectory on lathe spindle just with the drilling rod being clamped on lathe spindle chuck,
The helix that drill collar workpiece has had old thread to be repaired on whorl work piece coincides, and the work of workpiece location and installation is completed.
6. numerical control screw thread according to claim 5 repairs the moving method of the intrinsic helical trajectory of point of a knife on lathe, its feature
It is：When screw thread to be repaired is external screw thread, it is to be enclosed within the peripheral structure of two-start screw to be repaired, locating cone to position wimble device
The internal diameter of device is engaged with the external diameter of two-start screw to be repaired.
7. numerical control screw thread according to claim 5 repairs the moving method of the intrinsic helical trajectory of point of a knife on lathe, its feature
It is：When screw thread to be repaired is female thread, positioning wimble device is to put in the structure in two-start screw to be repaired, and locating cone is filled
The external diameter that puts is engaged with the internal diameter of female thread to be repaired.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210116915.XA CN102814511B (en) | 2012-04-20 | 2012-04-20 | Numerical control screw thread repairs the detection adjusting apparatus and method of helical trajectory on lathe spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210116915.XA CN102814511B (en) | 2012-04-20 | 2012-04-20 | Numerical control screw thread repairs the detection adjusting apparatus and method of helical trajectory on lathe spindle |
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| CN102814511A CN102814511A (en) | 2012-12-12 |
| CN102814511B true CN102814511B (en) | 2017-03-15 |
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| CN201210116915.XA Active CN102814511B (en) | 2012-04-20 | 2012-04-20 | Numerical control screw thread repairs the detection adjusting apparatus and method of helical trajectory on lathe spindle |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI494183B (en) * | 2013-04-30 | 2015-08-01 | Cnc lathe system for accelerated screw thread-cutting | |
| CN107824910B (en) * | 2017-11-30 | 2024-01-23 | 台州职业技术学院 | Internal thread helix initial angle positioner |
| CN110000432A (en) * | 2019-03-20 | 2019-07-12 | 韶关市汇建水泥制品有限公司 | A kind of screw recycling automatic repariring equipment |
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| CN102814511A (en) | 2012-12-12 |
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