CN103480872A - Cutting-off and chamfering integrated turning tool and one-step clamping, cutting-off and chamfering pipe cutter - Google Patents

Cutting-off and chamfering integrated turning tool and one-step clamping, cutting-off and chamfering pipe cutter Download PDF

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Publication number
CN103480872A
CN103480872A CN201310436481.6A CN201310436481A CN103480872A CN 103480872 A CN103480872 A CN 103480872A CN 201310436481 A CN201310436481 A CN 201310436481A CN 103480872 A CN103480872 A CN 103480872A
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pipe
chamfering
cone wedge
circle
cutting
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CN201310436481.6A
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CN103480872B (en
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柳燕明
马志远
项业铭
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柳燕明
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B27/00Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B25/00Accessories or auxiliary equipment for turning-machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B5/00Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • B23B5/08Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning axles, bars, rods, tubes, rolls, i.e. shaft-turning lathes, roll lathes; Centreless turning
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general

Abstract

The invention relates to a cutting-off and chamfering integrated turning tool and a one-step clamping, cutting-off and chamfering pipe cutter and belongs to pipe machining equipment. A main cutting edge is arranged on a front tool surface of the front of a tool handle, and two V-shaped grooves are symmetrically arranged in two auxiliary cutting edges, so that both cutting-off and chamfering can be performed, the operation is flexible, and exchanging of different turning tools during chamfering are avoided. The cutting-off and chamfering integrated turning tool is used by the pipe cutter, a thrust bearing, a tapered wedge thrust pipe and a plurality of tapered wedge pipes which are mounted on a cylindrical shaft successively are connected together, and a rotary feed pipe is clamped firmly by outward expansion of C-shaped rings under thrust of a clamping air cylinder piston and tapered heads. By means of the cutting-off and chamfering integrated turning tool mounted on a sliding shaft lathe tool rest, within the range of clearance grooves of the tapered wedge pipes, during feed pipe cutting-off tool withdrawn, and on a device, during once clamp of the inner diameter of a thin-wall round pipe, a plurality of feed pipes can be cut off by setting the length, and chamfering is performed on inner and outer edges of two end faces of notches.

Description

Cut off chamfering one lathe tool and clamped one time and cut off the pipe cutting machine of chamfering simultaneously
Technical field
The present invention relates to a kind ofly for the cut-out chamfering one lathe tool that cuts off thin-wall circular tube and clamped one time, cut off the pipe cutting machine of chamfering simultaneously, particularly relate to a kind of in clamped one time, but length is cut off many, rib inside and outside the otch both ends of the surface is carried out to the lathe tool of chamfer machining simultaneously, and the pipe cutting machine that adopts this lathe tool.
Background technology
In industrial production; thin-wall circular tube also requires rib inside and outside the otch both ends of the surface is carried out to chamfer machining after cutting off, and also requires in the process of clamping pipe simultaneously; the circularity precision to the material pipe can not cause damage, at present traditional Pipe Cutting processing mainly contains following four kinds of processing modes.
1, lathe cuts off the chamfer machining mode:
Lathe chuck clamps external diameter or the internal diameter of pipe, often expects in the time of will cutting off tube wall that pipe swings very large, with hand, goes to connect also dangerous, and tune also will clamp and chamfering for the second time, and uses frequently follow-rest and tailstock, and working (machining) efficiency is low.
2, sawing machine adds the cut-out chamfer machining mode of lathe:
Clamp the external diameter of pipe with bench vice, use lathe chuck instead after bands for band is lower the pipe saw and clamp for the second time chamfering, also will reverse end for end to clamp for the third time afterwards chamfering on lathe, bands for band cuts off thin-wall circular tube, and not only noise is large, also often collapse tooth, the combined efficiency of these two kinds of equipment is not high yet.
3, sawing machine adds the cut-out chamfer machining mode of Special chamfering machine:
After bands for band cut-out pipe, often do not guarantee the perpendicularity of end face and tubular axis line, at the Special chamfering machine next used, clamp in the chamfering of material pipe external diameter, often occur that the pipe radius is lopsided very large, another side does not also pour into angle, and the carbide cutter tool of die cast is pinching and tipping often, in addition also will be along with the difference of pipe thickness, readjust the tool position on rotary head, affected the raising of working (machining) efficiency and quality.
4, saw blade or hand operated grinding wheel cut off the chamfer machining mode of circular cone cutter or file
The large contaminated environment of noise, the circular cone cutter only can the voltage regulator tube end face angle of the inside, the angle of outside not, and file chamfering, labour intensity is large, efficiency is low, of poor quality.
Above four kinds of processing modes that cut off chamfering, a common ground is arranged, at the external diameter to light-wall pipe, in mechanical being fixedly clamped, not only cause the circularity of pipe, the change of cylindricity precision, also under potential impact, the raising that is benchmark manufacturing procedure and machining accuracy of material bore is take in road.
The patent No. is 201210264520.4, and denomination of invention is the patent of invention of " simultaneously the otch both ends of the surface being carried out the differential pipe cutting machine of inside and outside chamfered edge processing ", after having solved round material pipe cut-out, and a difficult problem of the otch both ends of the surface being carried out to inside and outside chamfered edge processing.Power in scheme, it is extensive that transmission and control arrange coverage, clamps the external diameter of material pipe, finally by 2 group 4 on rotary head cover cut-out and chamfering tool, completed.This processing scheme, all have to the infringement of out-of-roundness, on enhancing productivity the demand improved of improving in clamping external diameter reducing device fabrication and maintenance cost, minimizing material pipe.
Summary of the invention
The object of the invention is to overcome the defect of prior art and provide a kind of on an equipment, without the material pipe of tune midway in processing and exchange device more, in the disposable clamping of internal diameter, can realize cutting off and the one cut-out chamfer cutter of chamfering; And without the material pipe of tune midway in processing and exchange device more, in the disposable clamping of internal diameter from operation first one is cut off chamfer cutter, length can be set as required and cut off many, the otch both ends of the surface be carried out the pipe cutting machine of the clamped one time cut-out while chamfering of inside and outside rib chamfer machining simultaneously.
The present invention realizes that the technical scheme of above-mentioned purpose is: a kind of cut-out chamfering one lathe tool, comprise handle of a knife and rake face, it is characterized in that: the front of rake face arranges main cutting edge, the rake face prismatic crossing with the minor flank of two symmetries become the front cutting edge of two symmetries, article two, two symmetrical V-shaped grooves are set respectively on front cutting edge, and the limit radian of V-shaped groove is corresponding with the radian of added labor and materials pipe.
Main cutting edge towards the material caliber to feed, withdrawing slightly after cutting off the material pipe, Y-axis, to the cut-out chamfering one lathe tool on mobile lathe saddle, utilizes the V-shaped groove of front cutting edge to carry out chamfer machining to rib inside and outside the two ends section that cuts off rear material pipe.This lathe cutter structure is firm, easy to use, and flexible operation is changed different lathe tools while avoiding chamfering.This cutting way has avoided that the equipment cost that in the background technology, the multi-knife-head form is brought is high, the tight distortion of material pipe clamp is large, and the problem that maintenance is frequent, production efficiency is low.
Its preferred version is:
Described V-shaped groove be take rake face as starting point, with main cutting edge, approach, and the degree of depth of V-shaped groove is successively decreased, width is gradually little, the A/F of V-shaped groove is greater than the wall thickness of added labor and materials pipe, with the distance of main cutting edge be 1-9mm, in order to dodge the material end surfaces, the front clearance of symmetry is 1 °-30 ° below front cutting edge.The size of its chamfering, by the A/F of ground V-shaped groove, the size of front clearance, and how many decisions of the left and right depth of cut.The degree of depth of V-shaped groove is successively decreased, and is arcuation extension forward, can hide the end face of material pipe, is convenient to cutting.
A kind of clamped one time of above-mentioned cut-out chamfering one lathe tool that adopts cuts off the pipe cutting machine of chamfering simultaneously, comprise: support, be fixedly installed on motor reducer and cylinder axis on support, the output shaft end of motor reducer is connected with shaft coupling, and be connected with the left end pillow block of cylinder axis by shaft coupling, it is characterized in that: the mesopore piston, cone wedge ejector sleeve, some cone wedge pipes and the axle head cover that set gradually clamping cylinder on cylinder axis, cone wedge pipe arranges undercut, cone wedge ejector sleeve is connected by screw secondary the connection with some cone wedge pipes, and C type circle is set on the conical head of junction; Install on the lengthening support of support and send pipe cylinder and cylinder seat, the material pipe is through the internal diameter of the no inner-ring bearing in the piping support seat and brake, outer surface through cone wedge pipe and cone wedge ejector sleeve, under the promotion of the piston of clamping cylinder, conical head, outer swollen material pipe clamp of C shape circle is tightly firm, and makes it together to rotate with cylinder axis; Two supporting bases are set on support, two sliding axles are set between two supporting bases, on two sliding axles, some slides are set, each slide is fastened on lathe saddle on the slide plane by screw, each lathe saddle is fixedly installed one and cuts off chamfering one lathe tool, and the undercut that cuts off the chamfering one lathe tool cone wedge pipe inner with the material pipe is corresponding; The operation knife rest is corresponding to the material pipe, cut off the main cutting edge of chamfering one lathe tool after undercut inscribe fracture pipe, in the operation of withdrawing backhaul, the operation slide moves, be arranged on and cut off the monosymmetric V-shaped groove of chamfering one lathe tool front cutting edge, complete the processing to material pipe otch both ends of the surface chamfering.
Be fixedly installed on the revolution of the motor reducer on support between 10-500 rev/min, the output shaft end of motor reducer is connected with shaft coupling, and is connected with the left end pillow block of cylinder axis by shaft coupling.The left end outer surface of cylinder axis is through the left end cap that mesopore and position limiting structure clamping cylinder are arranged.Clamping cylinder is to have the cylinder barrel two ends end cap of base holes to clamp by 4 pull bars, and is fixed on the double-acting cylinder on support.Or with many piston-cylinders of connecting, to increase motive force.The outer surface of cylinder axis is the same with pillow block, axially is provided with keyway, and right-hand member is provided with annular groove, and cylinder axis is by solid bar or by the steel pipe processing and manufacturing.Also can in the cylinder central siphon, piston be set.The mesopore piston is installed on cylinder axis, and the end of thread of mesopore piston clamps the piston of clamping cylinder by round nut.The outer surface of mesopore piston, pass from the mesopore of clamping cylinder right end cap.The inside of clamping cylinder and mesopore piston, all be equipped with guide ring and rotary sealing.The top of mesopore piston (right-hand member), be provided with annular groove and fixing threaded hole that the semicircle shaft coupling is installed, then be arranged on successively on the outer surface of cylinder axis thrust bearing is arranged, inside is equipped with the cone wedge ejector sleeve of key, no inner-ring bearing in axle supporting base above being arranged on support, pass, conical head is towards front (right side), several cone wedge pipes then are installed, finally in the front of elastic spring, the axle head cover is installed, the semicircle shaft coupling strides across thrust bearing, by screw, be fixed on the annular groove platform of mesopore piston right-hand member, accomplish under the prerequisite that does not affect thrust bearing and the rotation of cone wedge ejector sleeve, the three is linked togather.The cone wedge ejector sleeve that no inner-ring bearing mesopore in the axle supporting base passes, can radial rotary with cylinder axis, can move axially again, forms second supporting-point to cylinder axis.A circle key of C shape circle, through a circle keyway of conical head, is inserted in the keyway of cylinder axis, is sleeved on the conical head of cone wedge ejector sleeve and cone wedge pipe.Send pipe cylinder and cylinder seat to be arranged on and lengthen on support, the material pipe, through the internal diameter of the no inner-ring bearing in the piping support seat and brake, is through the outer surface of cone wedge pipe and cone wedge ejector sleeve.Under the promotion of the piston of clamping cylinder and conical head, outer swollen material pipe clamp of C shape circle is tightly firm, has realized the material bore is produced to mechanical booster, and has made it together to rotate with cylinder axis, and guarantee after cutting off chamfering, the internal diameter of every section material pipe has more than one C shape circle in clamping.More than one piping support seat is fixedly installed on the lengthening support be connected with support, and cylinder axis is formed to the 3rd supporting-point.More than one slide, through two sliding axles, be arranged between two supporting bases, screw is fastened on more than one lathe saddle on the slide plane, and each is equipped with one and cuts off chamfering one lathe tool above lathe saddle, the lathe tool on the operation knife rest, after cutting off the material pipe, in the operation of withdrawing backhaul, be arranged on and cut off the monosymmetric V-shaped groove of chamfering one lathe tool front cutting edge, completed the processing to rib chamfering inside and outside the otch both ends of the surface simultaneously.Being arranged on V-arrangement fork shaft bearing on the tube one-way cylinder of piping support seat side beats the material pipe of rotation to reduce, be arranged on the braking one-way cylinder that send the brake above the pipe cylinder rod, under the direct control of 3 position-5 way, two-bit triplet and shuttle valve, completed give, the program of material returned pipe.Its one-way cylinder also available electromagnetic brake substitutes, clamping cylinder and tube cylinder, under the control that is the master at two-position five-way valve, completed and clamped tube and pine folder, moved back the program of leaning on, after making to clamp, could rotate by starter motor by pneumatic-to-current converter, the clamping cylinder pneumatic control also can change hydraulic control into, to improve the clamping dynamics to the material pipe.
Wherein preferred version is:
The pipe external diameter of described cone wedge ejector sleeve is less than the internal diameter of material pipe, end connects the mesopore piston by the semicircle shaft coupling, the end of cone wedge ejector sleeve is provided with the cannelure be connected with the semicircle shaft coupling, endoporus axially is provided with elongated keyway and inner groove, the conical head on top offers first lap head keyway, a circle key of C shape circle, be arranged in the keyway that cylinder axis offers through a circle keyway.Under the promotion of the piston of clamping cylinder and conical head, C shape circle outer swollen tightly firm the material pipe clamp, realized the material bore is produced to mechanical booster, and made it together to rotate with cylinder axis.
Offer the second circle keyway on the conical surface of the conical head on the pipe external diameter top of described cone wedge pipe, the bore of cone wedge pipe axially is provided with screw auxiliary connection groove, rear end face is provided with limiting stand, is connected by screw the secondary screw auxiliary connection groove that passes between cone wedge ejector sleeve and adjacent two cone wedge pipes and connects together.Can, according to the length of material pipe, a plurality of cone wedge pipes be set.Offer equally a circle keyway endoporus on the conical surface of the conical head of the pipe external diameter of cone wedge pipe and axially be provided with screw auxiliary connection groove, the cone angle of its conical head is greater than 25 °, rear end face is provided with limiting stand, being connected by screw the secondary screw auxiliary connection groove that passes between cone wedge ejector sleeve and adjacent two cone wedge pipes connects together, the length of cone wedge pipe reaches and C shape circle combination configuration quantity, determine according to the length of institute's blank pipe and the intensity of cylinder axis.
The centre of the pipe external diameter surface of described cone wedge pipe is provided with a undercut, and bore is provided with inner groove, and the growing way size is got at its undercut two ends, and degree of depth 2-15mm, on the middle tube wall of cone wedge pipe, is provided with two adjusting holes of adjusting the screw auxiliary connection.Undercut is got the growing way size and is referred to that its length on the pipe external diameter surface is as far as possible long, enlarges the size range of cutting off processing, improves working (machining) efficiency.The cut-out chamfering one lathe tool that each lathe saddle is installed above is corresponding in the processing of cutting off chamfering with undercut, the lathe tool on the operation knife rest.Complete cut-out in undercut, avoid cutting off chamfering one lathe tool and the collision of cone wedge pipe, simple to operation, machining accuracy is high, is convenient to collect cutting swarf.
The circle internal diameter of described C shape circle is less than the external diameter of conical head, and described C shape circle center position is extended with a circle key, and the distance between a circle key and other end circle tail is 5-50mm, and a side is provided with side plane, and the external diameter surface that encloses (12) C shape is provided with Non-slip material.The cross section of C shape circle is that circular, polygon or circle are mutually excessive with plane, encloses internal diameter and is less than conical head or external diameter to store the retraction elasticity dynamics of self.When material exits pipe, rely on self elasticity dynamics retraction of C shape circle, from the inner pine folder of material pipe, so that take out pipe.Non-slip material is comprised of a plurality of continuous semi arches or concave station, and the spacing between semi arch or concave station is 0.1-10mm, and the external diameter of the blade of formation can be set to flat sword face, and Non-slip material can also adopt other shapes except above-mentioned shape.
The two ends of described two sliding axles are provided with supporting base, and the side of slide is provided with through hole and the self-lubricating bearing that two sliding axles are installed, and the upper plane layout of slide has two set bolts that lathe saddle is installed, and slide is provided with location structure on sliding axle.The purpose that two sliding axles are set is: reduce the frictional force of slide, also available dovetail groove guide rail replaces.The effect of location structure is lathe saddle is fixed on sliding axle, so that the material pipe is cut off to processing, guards against deviations, and improves the length machining accuracy.
On described support, scale frame is installed, supporting base is supporting hinged outer tube, the outer surface of outer tube, being provided with the green lattice corresponding with boring wedge pipe, undercut prints, the opening part of inner sleeve is fixed with Steel Ruler, Steel Ruler can be at the outer tube axis to quick sliding and location, and radially 45 ° of directions are rotated.Can be on scale frame eye-catching size marking, as green lattice print or the guide of other colors under, be convenient to adjust lathe saddle, improve machining accuracy.
The side of described piping support seat arranges the V-arrangement fork shaft bearing that the tube one-way cylinder drives, and V-arrangement fork shaft bearing acts on the material tube-surface makes the material pipe of rotation reduce the amplitude of beating.Further improve machining accuracy.
The invention has the beneficial effects as follows: cut off the main cutting edge of chamfering one lathe tool towards expecting that caliber is to feed, cutting off after material manages slightly withdrawing, Y-axis is to the cut-out chamfering one lathe tool on mobile lathe saddle, and the V-shaped groove that utilizes front cutting edge carries out chamfer machining to the inside and outside rib of two end faces cutting off rear material pipe.The purpose that a plurality of slides, lathe saddle and lathe tool are set is in order to improve working (machining) efficiency.This lathe cutter structure is firm, easy to use, and flexible operation is changed different lathe tools while avoiding chamfering.This cutting way has avoided that the equipment cost that in the background technology, the multi-knife-head form is brought is high, the tight distortion of material pipe clamp is large, and the problem that maintenance is frequent, production efficiency is low.
Adopt the clamped one time of above-mentioned cut-out chamfering one lathe tool to cut off the pipe cutting machine of chamfering simultaneously, can be now being manually main control, change sensing and electronic position identification, AC servo control, numerical control mobile device and pneumatic hydraulic actuator etc. into, to improve the automaticity of pipe cutting machine self.After globality is optimized, clamped one time of the present invention cuts off the pipe cutting machine of chamfering simultaneously:
One, can accomplish on an equipment, in clamped one time, can more than a people, operate simultaneously, length is cut off multistage, in the way retreated at cut-out chamfering one lathe tool, rib inside and outside the both ends of the surface of otch is carried out to chamfering simultaneously, reduced round material pipe in the past with cut off chamfer machining in transfer, carrying and the damage that clamping brings repeatedly, improved production efficiency and product quality;
Two, take the internal diameter of clamping circle material pipe is the benchmark that cuts off chamfering, accomplish that machining benchmark overlaps with working standard, the center line perpendicularity that makes to cut off end face and pipe is high, reduced the poor impact on malalignment of material thickness of pipe wall, reduced in the past because clamping the infringement of thin-wall circular material pipe external diameter to the circularity precision of pipe;
Three, take high efficiency turner processing and the general processing component of standard component as main, reduced the cost of device fabrication and maintenance.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is knife rest of the present invention and scale frame structural perspective;
Fig. 3 is material pipe rotary positioning structure stereogram of the present invention;
Fig. 4 is cut-out chamfering one lathe tool stereogram of the present invention;
Fig. 5 is C shape circle stereogram of the present invention;
Fig. 6 is cone wedge ejector sleeve stereogram of the present invention;
Fig. 7 is cone wedge pipe stereogram of the present invention;
In figure: 1 support; 2 motor reducers; 3 shaft couplings; 4 cylinder axis; 5 clamping cylinders; 6 mesopore pistons; 7 semicircle shaft couplings; 8 thrust bearings; 9 cone wedge ejector sleeves; 9.1 front end face; 9.2 elongated keyway; 9.3 conical head; A 9.4 circle keyway; 9.5 adjusting hole; 9.6 pipe external diameter; 9.7 inner groove; 9.8 bore; 9.9 annular groove; 9.10 rear end face; 10 axle supporting bases; 11 keys; 12C shape circle; 12.1 blade; 12.2 cutter groove; A 12.3 circle key; 12.4 circle tail; 12.5 circle internal diameter; 12.6 side plane; 13 cone wedge pipes; 13.1 front end face; 13.2 bore; A 13.3 circle keyway; 13.4 screw auxiliary connection groove; 13.5 conical head; 13.6 adjusting hole; 13.7 undercut; 13.8 pipe external diameter; 13.9 inner groove; 13.10 rear end face; 13.11 limiting stand; 14 screw auxiliary connections; 15 material pipes; 16 scale frames; 16.1 supporting base; 16.2 outer tube; 16.3 green lattice print; 16.4 inner sleeve; 16.5 Steel Ruler; 17 axle head covers; 18 elastic springs; 19 lengthen support; 20 piping support seats; 20.1 no inner-ring bearing; 21 tube one-way cylinders; 21.1V shape fork shaft bearing; 22 braking one-way cylinders; 23 brakes; 24 send the pipe cylinder; 25 cylinder seats; 26 3 position-5 way handle type air valves; 27 shuttle valves; 28 two-position three way handle type air valves; 29 cut off chamfering one lathe tool; 29.1 front cutting edge; 29.2V shape groove; 29.3 rake face; 29.4 main cutting edge; 29.5 minor flank; 29.6 front clearance; 29.7 limit radian; 29.8 handle of a knife; 30 slides; 31 lathe saddles; 31.1 screw; 32 sliding axles; 32.1 supporting base; 33 two-position five-way handle type air valves; 34 pneumatic-to-current converters.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1:
As shown in Figure 4, a kind of cut-out chamfering one lathe tool, comprise handle of a knife 29.8, rake face 29.3 arranges main cutting edge 29.4, the crossing rib of the minor flank 29.5 of rake face 29.3 and two symmetries arranges respectively the front cutting edge 29.1 of two symmetries, article two, front cutting edge 29.1 arranges respectively symmetrical two V-shaped grooves 29.2, and the limit radian 29.7 of V-shaped groove 29.2 is corresponding with the radian of added labor and materials pipe 15.
The operation lathe saddle makes main cutting edge towards expecting that caliber is to feed, cutting off after material manages slightly withdrawing, Y-axis, to the cut-out chamfering one lathe tool on mobile lathe saddle, utilizes the V-shaped groove on front cutting edge to carry out chamfer machining to rib inside and outside the two ends section that cuts off rear material pipe.This lathe cutter structure is firm, easy to use, and flexible operation is changed different lathe tools while avoiding chamfering.This cutting way has avoided that the equipment cost that in the background technology, the multi-knife-head form is brought is high, the tight distortion of material pipe clamp is large, and the problem that maintenance is frequent, production efficiency is low.
Embodiment 2:
On the basis of embodiment 1, V-shaped groove 29.2 be take rake face 29.3 as starting point, with main cutting edge 29.4, approach, and the degree of depth of V-shaped groove 29.2 is successively decreased, width is gradually little, and the A/F of V-shaped groove 29.2 is greater than the wall thickness of added labor and materials pipe 15, with main cutting edge 29.4 the distance be 1-9mm, in order to dodge the material end surfaces, front clearance 29.6 symmetrical below front cutting edge is 1 °-30 °.
The size of its chamfering, by the A/F of ground V-shaped groove, the size of front clearance, and how many decisions of the left and right depth of cut.
Embodiment 3:
On the basis of embodiment 1,2, cut off the rake face 29.3 of chamfering one lathe tool 29, intersect the front cutting edge 29.1 of formed two symmetries with the minor flank 29.5 of two symmetries, by place, cutter the place ahead, be tilted to down, symmetrical be provided with two gradually little V-shaped grooves 29.2, form the limit radian 29.7 of V-shaped groove, managed 15 radian with cuts off material corresponding.
The A/F of the V-shaped groove 29.2 that the rake face 29.3 of take is starting point, be greater than the wall thickness of institute's blank pipe 15, with the distance of main cutting edge 29.4 be 1-9mm, symmetrical front clearance 29.6 is 1 °-30 °.
Embodiment 4:
A kind of clamped one time of above-mentioned cut-out chamfering one lathe tool cuts off the pipe cutting machine of chamfering simultaneously, comprise: support 1, be fixedly installed on motor reducer 2 and cylinder axis 4 on support 1, the output shaft end of motor reducer 2 is connected with shaft coupling 3, and is connected with the left end pillow block of cylinder axis 4 by shaft coupling 3.Set gradually mesopore piston 6, cone wedge ejector sleeve 9, some cone wedge pipes 13 and the axle head cover 17 of clamping cylinder 5 on cylinder axis 4, cone wedge pipe 13 arranges undercut 13.7, the front end face 9.1 of cone wedge ejector sleeve 9 is concordant with the rear end face 13.10 of cone wedge pipe 13, and axle head cover 17 is arranged on the front of cylinder axis 4 tops (right-hand member) wire loop.Cone wedge ejector sleeve 9 is connected by screw secondary 14 with some cone wedge pipes 13 and is connected, and C type circle 12 is set on the conical head of junction; Install on the lengthening support 19 of support 1 and send pipe cylinder 24 and cylinder seat 25, material pipe 15 is through the no inner-ring bearing 20.1 in piping support seat 20 and the internal diameter of brake 23, outer surface through cone wedge pipe 13 and cone wedge ejector sleeve 9, under the promotion of the piston of clamping cylinder 5, conical head, the outer swollen of C shape circle 12 clamps material pipe 15 firmly, and makes it together to rotate with cylinder axis 4; Support 1 arranges two supporting bases 32.1, two sliding axles 32 are set between two supporting bases 32.1, some slides 30 are set on two sliding axles 32, each slide 30 is fastened on lathe saddle 31 on slide 30 planes by screw 31.1, each lathe saddle 31 is fixedly installed one and cuts off chamfering one lathe tool 29, and the operating position that cuts off chamfering one lathe tool 29 is corresponding with the undercut 13.7 of the cone wedge pipe 13 of material pipe 15 inside.
During use, operation knife rest 31 is corresponding to material pipe 15, cut off the main cutting edge 29.4 of chamfering one lathe tool 29 after undercut 13.7 inscribe fracture pipes 15, in the operation of withdrawing backhaul, left and right promotes slide 30 and moves axially, be arranged on and cut off the monosymmetric V-shaped groove 29.2 of chamfering one lathe tool 29 front cutting edge 29.1, complete the processing to material pipe 15 otch both ends of the surface chamferings.
This pipe cutting machine is without the material pipe of tune midway in processing and exchange device more, in the disposable clamping of internal diameter from operation first one is cut off chamfer cutter, many of length cut-outs can be set as required, the otch both ends of the surface are carried out to interior outside chamfer machining simultaneously.
Embodiment 5:
On the basis of embodiment 4, as shown in Figure 1, clamped one time cuts off the pipe cutting machine of chamfering simultaneously, comprise: support 1, be fixedly installed the motor reducer 2 on support 1, the output shaft end of motor reducer 2 is connected with shaft coupling 3, and is connected with the left end pillow block of cylinder axis 4 by shaft coupling 3, the left end outer surface of cylinder axis 4, through the left end cap that mesopore and position limiting structure clamping cylinder 5 are arranged.Clamping cylinder 5 is to have the cylinder barrel two ends end cap of base holes to clamp by 4 pull bars, and be fixed on the double-acting cylinder on support 1, the outer surface of cylinder axis 4 is the same with pillow block, axially be provided with keyway, right-hand member is provided with annular groove, cylinder axis 4 or by the steel pipe processing and manufacturing, mesopore piston 6 is installed on cylinder axis 4, the end of thread of mesopore piston 6 clamps the piston of clamping cylinder 5 by round nut, and the outer surface of mesopore piston 6, pass from the mesopore of clamping cylinder 5 right end caps.The inside of clamping cylinder 5 and mesopore piston 6, guide ring and rotary sealing all are installed, the right-hand member of mesopore piston 6, be provided with annular groove and fixing threaded hole that semicircle shaft coupling 7 is installed, then be arranged on successively on the outer surface of cylinder axis 4 thrust bearing 8 is arranged, inside is equipped with the cone wedge ejector sleeve 9 of key 11, no inner-ring bearing in axle supporting base 10 above being arranged on support 1, pass, conical head is towards the right side, several cone wedge pipes 13 then are installed, the C shape circle that numerous cutter grooves 12.2 are arranged, its side plane 12.6 leans against on the end face of the rear end face 13.10 of cone wedge pipe 13 and axle head cover, it is concordant that the front end face 13.1 of cone wedge pipe and axle head overlap 17 rear ends, being provided with of elastic spring 18 is beneficial to dismounting and installs.Semicircle shaft coupling 7 strides across thrust bearing 8, is bolted on the annular groove platform of mesopore piston 6 right-hand members, accomplishes under the prerequisite that does not affect thrust bearing 8 and 9 rotations of cone wedge ejector sleeve, the three to be linked togather.The cone wedge ejector sleeve 9 that no inner-ring bearing mesopores in axle supporting base 10 pass, can radial rotary, can move axially again, forms second supporting-point to cylinder axis 4.
Embodiment 6:
At embodiment 4, on 5 basis, as Fig. 1, 6, shown in 7, rear end face 13.10 contacts with the C shape circle 12 above being enclosed within conical head 9.3, the pipe external diameter 9.6 of cone wedge ejector sleeve 9 is less than the internal diameter of material pipe 15, end connects mesopore piston 6 by semicircle shaft coupling 7, the end (left end) of cone wedge ejector sleeve 9 is provided with the cannelure 9.9 be connected with semicircle shaft coupling 7, rear end face 9.10 leans on mutually with thrust bearing, bore 9.8 axially is provided with elongated keyway 9.2 and inner groove 9.7, be provided with adjusting hole 9.5 above pipe external diameter 9.6, the conical head 9.3 on top offers first lap head keyway 9.4, a circle key 12.3 of C shape circle 12, through a circle keyway 9.4, be arranged in the keyway that cylinder axis 4 offers.
Adjustment is arranged on the position limiting structure on described clamping cylinder 5 left end caps, to control C shape circle 12, makes it that retreats and the swollen starting point of advancing the shortest be arranged.
Offer the second circle keyway 13.3 on the conical surface of the conical head 13.5 on pipe external diameter 13.8 tops of cone wedge pipe 13, the bore 13.2 of cone wedge pipe 13 axially is provided with screw auxiliary connection groove 13.4, rear end face 13.10 is provided with limiting stand 13.11, is connected by screw secondary 14 between cone wedge ejector sleeve 9 and adjacent two cone wedge pipes 13 and passes screw auxiliary connection groove 13.4 and connect together.
The centre on pipe external diameter 13.8 surfaces of cone wedge pipe 13 is provided with a undercut 13.7, and bore 13.2 is provided with inner groove 13.9, and the growing way size is got at its undercut two ends, distance will be grown, degree of depth 2-15mm, on the middle tube wall of cone wedge pipe 13, be provided with two adjusting holes 13.6 of adjusting the screw auxiliary connection.Undercut is got the growing way size and is referred to that its length on the pipe external diameter surface is as far as possible long, enlarges the size range of cutting off processing, improves working (machining) efficiency.
Embodiment 7:
On the basis of embodiment 4-6, as shown in Figure 1,5, the circle internal diameter 12.5 of C shape circle 12 is less than the external diameter of conical head, described C shape circle circle center position is extended with a circle key 12.3, distance between a circle key and other end circle tail 12.4 is 5-50mm, one side is provided with side plane 12.6, at the external diameter surface of C shape circle 12, is provided with Non-slip material.
A circle key 12.3 of C shape circle 12, a circle keyway 9.4 and a circle keyway 13.3 through the conical surface, be inserted in the keyway of cylinder axis 4, is sleeved on the conical surface of cone wedge ejector sleeve 9, conical head 9.3 and cone wedge pipe 13 and conical head 13.5.Send pipe cylinder 24 and cylinder seat 25 to be arranged on and lengthen on support 19, material pipe 15 is through the no inner-ring bearing 20.1 in piping support seat 20 and the internal diameter of brake 23, through the outer surface of cone wedge pipe 13 and cone wedge ejector sleeve 9.Under the promotion of the piston of clamping cylinder 5, conical head, the outer swollen of C shape circle 12 clamps material pipe 15 firmly and realized the material bore is produced to mechanical booster, and make it together to rotate with cylinder axis 4, more than one piping support seat 20 is fixedly installed on the lengthening support 19 be connected with support 1, and cylinder axis 4 is formed to the 3rd supporting-point.
The cross section of C shape circle 12 is that circle, square polygon or circle and plane are mutually excessive, circle internal diameter 12.5 is less than the external diameter of conical head 13.5 or 9.3, to store the retraction elasticity dynamics of self, described C shape circle circle center position is extended with a circle key 12.3, distance between a circle key and other end circle tail 12.4 is 5-50mm, and wherein the external diameter surface at C shape circle 12 is provided with Non-slip material.
Non-slip material is comprised of a plurality of continuous semi arches or concave station, and the spacing between semi arch or concave station is 0.1-5mm, and the external diameter of the blade 12.1 of formation can be set to flat sword face.
Embodiment 8:
On the basis of embodiment 4-7, as shown in Figure 1, 2, the two ends of two sliding axles 32 are provided with supporting base 32.1, the side of slide 30 is provided with through hole and the self-lubricating bearing that two sliding axles 32 are installed, the upper plane layout of slide 30 has two set bolts 31.1 that lathe saddle 31 is installed, and slide 30 is provided with location structure on sliding axle 32.
More than one slide 30, through two sliding axles 32, be arranged between two supporting bases 32.1, screw 31.1 is fastened on more than one lathe saddle 31 on the plane of slide 30, each is equipped with one and cuts off chamfering one lathe tool 29 above lathe saddle 31, under the guide of the green lattice seal 16.3 of scale frame 16, the undercut 13.7 of corresponding cone wedge pipe 13, operation knife rest 31, it is characterized in that: after undercut 13.7 inscribe fracture pipes 15, in the operation of withdrawing backhaul, be arranged on and cut off the monosymmetric V-shaped groove 29.2 of chamfering one lathe tool 29 front cutting edge 29.1, completed simultaneously the processing to rib chamfering inside and outside the otch both ends of the surface.
Embodiment 9:
On the basis of embodiment 4-8, as shown in Figure 1, 2, scale frame 16 is installed on support 1, supporting base 16.1 is supporting hinged outer tube 16.2, the outer surface of outer tube 16.2, be provided with the green lattice corresponding with boring wedge pipe 9, undercut 13.7 and print 16.3, and the opening part of inner sleeve 16.4 is fixed with Steel Ruler 16.5, Steel Ruler 16.5 can be in outer tube 16.2 axially quick sliding and location, and radially 45 ° of directions are rotated.
Embodiment 10:
On the basis of embodiment 4-9, as shown in Figure 1, the side of described piping support seat 20 arranges the V-arrangement fork shaft bearing 21.1 that tube one-way cylinder 21 drives, and V-arrangement fork shaft bearing 21.1 acts on the surface of expecting pipe 15 and makes the material pipe 15 of rotation reduce the amplitude of beating.
Being arranged on V-arrangement fork shaft bearing 21.1 on the tube one-way cylinder 21 of piping support seat 20 sides beats the material pipe 15 of rotation to reduce, be arranged on and send pipe cylinder 24, the braking one-way cylinder 22 of the brake 23 above cylinder rod, at 3 position-5 way handle type air valve 26, two-bit triplet handle type air valve 28, under the direct control of shuttle valve 27, completed and sent, the program of material returned pipe, clamping cylinder 5 and tube cylinder 21, under the control that is the master at two-position five-way valve handle type air valve 33, clamping tube and pine folder have been completed, move back the program of leaning on, pneumatic-to-current converter 34, after making to clamp, could rotate by starter motor, the pneumatic control of clamping cylinder also can change hydraulic control into, to improve the clamping dynamics to the material pipe.
Processing and operating process are described below:
1, long material to be cut is managed to 15 from the pipe cutting machine right-hand member, in the hole of piping support seat 20 no inner-ring bearings 20.1, pierce into, and surpass the position of brake 23, push-and-pull two-bit triplet 28, and 3 position-5 way 26 handle type air valves, control the one-way cylinder 22 in brake and send pipe cylinder 24, the left end of material pipe 15, deliver to a preferred position of measuring starting point that cuts off on cone wedge ejector sleeve 9.
2, promote two five-ways, 33 handle type air valves left, control the piston of clamping cylinder 5, by mesopore piston 6, thrust bearing 8 and cone wedge ejector sleeve 9, the conical head that promotes cone wedge pipe 13 moves right, by C shape circle 12, material pipe 15 is clamped firmly, the V-type forked axle bearing 21.1 of having controlled tube one-way cylinder 21 relies on material pipe 15, and starter motor reductor 1 rotation simultaneously.
3, according to length and the quantity that will cut off the material pipe, on contrast scale 16 outer tubes 16.2, green lattice print 16.3 length range, from selected material pipe 15 left side starting points, operation lathe saddle 31 makes car cut off chamfering one lathe tool 29, in green lattice print undercut 13.7 length, depth bounds of 16.3 correspondences, cut off the several material pipe 15 of length.
4, cutting off the material pipe, in the way that operation lathe saddle 31 retreats, cutting off chamfering one lathe tool 29.Front cutting edge 29.1 both sides, be greater than V-shaped groove 29.2 openings of material pipe 15 wall thickness, aims at the wall thickness of end face, according to the chamfer dimesion requirement, controls lathe saddle 31, allows lathe tool 29 left and right rely on the both ends of the surface of material pipe 15, complete chamfering after the former road of lathe tool return.The size of its chamfering, by width, the degree of depth, the size of front clearance and how many decisions of the left and right depth of cut of ground V-shaped groove opening.
5, after cutting off chamfering and completing, promote two-position five-way 33 handle type air valves to the right, motor reducer 1 stall, tube one-way cylinder 21 retreats, the piston of clamping cylinder 5 is to left movement, and pulls semicircle shaft coupling 7 and screw auxiliary connection 14 by mesopore piston 6, the retreating of cone wedge ejector sleeve 9 and cone wedge pipe 13 conical heads, the retraction voluntarily of C shape circle 12, loose material folding pipe 15.
6, promote the handle type air valve of two-position three way 28 and 3 position-5 way 26 to the right, control and to send pipe cylinder 24, drive material pipe 15 and retreat to the right, from axle, unload the material pipe 15 of all cut-outs.
If operate many chassis bed knife rest more than 7 one people simultaneously, processed, working (machining) efficiency is higher.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.

Claims (10)

1. one kind is cut off chamfering one lathe tool, comprise handle of a knife (29.8) and rake face (29.3), it is characterized in that: the front of rake face (29.3) arranges main cutting edge (29.4), rake face (29.3) prismatic crossing with the minor flank (29.5) of two symmetries become the front cutting edge (29.1) of two symmetries, article two, symmetrical two V-shaped grooves (29.2) are set respectively on front cutting edge (29.1), and the limit radian (29.7) of V-shaped groove (29.2) is corresponding with the radian of added labor and materials pipe (15).
2. cut-out chamfering one lathe tool according to claim 1, it is characterized in that: it is starting point that described V-shaped groove (29.2) be take rake face (29.3), with main cutting edge (29.4), approach, and the degree of depth of V-shaped groove (29.2) is successively decreased, width is gradually little, the A/F of V-shaped groove (29.2) is greater than the wall thickness of added labor and materials pipe (15), with the distance of main cutting edge (29.4) be 1-9mm, the front clearance (29.6) of symmetry is 1 °-30 ° below front cutting edge (29.1).
3. one kind adopts the clamped one time of the described cut-out chamfering of claim 1 one lathe tool to cut off the pipe cutting machine of chamfering simultaneously, comprise: support (1), be fixedly installed on motor reducer (2) and cylinder axis (4) on support (1), the output shaft end of motor reducer (2) is connected with shaft coupling (3), and be connected with the left end pillow block of cylinder axis (4) by shaft coupling (3), it is characterized in that: the mesopore piston (6) that sets gradually clamping cylinder (5) on cylinder axis (4), cone wedge ejector sleeve (9), some cone wedge pipes (13) and axle head cover (17), cone wedge pipe (13) arranges undercut (13.7), cone wedge ejector sleeve (9) is connected by screw pair (14) with some cone wedge pipes (13) and is connected, and C type circle (12) is set on the conical head of junction,
The upper installation of the lengthening support (19) of support (1) sent pipe cylinder (24) and cylinder seat (25), material pipe (15) is through the no inner-ring bearing in piping support seat (20) and the internal diameter of brake (23), outer surface through cone wedge pipe (13) and cone wedge ejector sleeve (9), under the promotion of the piston of clamping cylinder (5), conical head, the outer swollen of C shape circle (12) clamps material pipe (15) firmly, and makes it together to rotate with cylinder axis (4);
Two supporting bases (32.1) are set on support (1), two sliding axles (32) are set between two supporting bases (32.1), some slides (30) are set on two sliding axles (32), each slide (30) is fastened on lathe saddle (31) on the plane of slide (30) by screw (31.1), each lathe saddle (31) is fixedly installed one and cuts off chamfering one lathe tool (29), and the undercut (13.7) that cuts off chamfering one lathe tool (29) the cone wedge pipe (13) inner with material pipe (15) in processing is corresponding;
Operation lathe saddle (31) is corresponding to material pipe (15), cut off the main cutting edge (29.4) of chamfering one lathe tool (29) after undercut (13.7) inscribe fracture pipe (15), in the operation of withdrawing backhaul, moving sliding base (30), be arranged on and cut off the monosymmetric V-shaped groove of chamfering one lathe tool (29) front cutting edge (29.1) (29.2), complete the processing to the inside and outside chamfering of material pipe (15) otch both ends of the surface.
4. clamped one time according to claim 3 cuts off the pipe cutting machine of chamfering simultaneously, it is characterized in that: the pipe external diameter (9.6) of described cone wedge ejector sleeve (9) is less than the internal diameter of material pipe (15), end connects thrust bearing (8) and mesopore piston (6) by semicircle shaft coupling (7), the end of cone wedge ejector sleeve (9) is provided with the cannelure (9.9) be connected with semicircle shaft coupling (7), endoporus axially is provided with elongated keyway (9.2) and inner groove (9.7), the conical head on top (9.3) offers first lap head keyway (9.4), a circle key (12.3) of C shape circle (12), through a circle keyway (9.4), by key (11), be arranged in the keyway that cylinder axis (4) offers.
5. clamped one time according to claim 3 cuts off the pipe cutting machine of chamfering simultaneously, it is characterized in that: on the conical surface of the conical head (13.5) on pipe external diameter (13.8) top of described cone wedge pipe (13), offer the second circle keyway (13.3), the bore (13.2) of cone wedge pipe (13) axially is provided with screw auxiliary connection groove (13.4), rear end face (13.10) is provided with limiting stand (13.11), being connected by screw pair (14) between cone wedge ejector sleeve (9) and adjacent two cone wedge pipes (13) passes screw auxiliary connection groove (13.4) and connects together.
6. cut off the pipe cutting machine of chamfering simultaneously according to claim 3,4 or 5 described clamped one times, it is characterized in that: the centre on pipe external diameter (13.8) surface of described cone wedge pipe (13) is provided with a undercut (13.7), bore (13.2) is provided with inner groove (13.9), the growing way size is got at its undercut two ends, degree of depth 2-15mm, on the middle tube wall of cone wedge pipe (13), be provided with two adjusting holes (13.6) of adjusting the screw auxiliary connection.
7. clamped one time according to claim 3 cuts off the pipe cutting machine of chamfering simultaneously, it is characterized in that: the circle internal diameter (12.5) of described C shape circle (12) is less than the external diameter of conical head, described C shape circle circle center position is extended with a circle key (12.3), distance between a circle key and other end circle tail (12.4) is 5-50mm, one side is provided with side plane (12.6), and the external diameter surface that encloses (12) C shape is provided with Non-slip material.
8. clamped one time according to claim 3 cuts off the pipe cutting machine of chamfering simultaneously, it is characterized in that: the two ends of described two sliding axles (32), be provided with supporting base (32.1), the side of slide (30) is provided with through hole and the self-lubricating bearing that two sliding axles (32) are installed, the upper plane layout of slide (30) has two set bolts (31.1) of installation lathe saddle (31), and slide (30) is provided with location structure on sliding axle (32).
9. clamped one time according to claim 3 cuts off the pipe cutting machine of chamfering simultaneously, it is characterized in that: scale frame (16) is installed on described support (1), supporting base (16.1) is supporting hinged outer tube (16.2), the outer surface of outer tube (16.2), be provided with the green lattice corresponding with boring wedge pipe (9), undercut (13.7) and print (16.3), the opening part of inner sleeve (16.4) is fixed with Steel Ruler (16.5), Steel Ruler (16.5) can be in outer tube (16.2) axially quick sliding and location, and radially 45 ° of directions are rotated.
10. clamped one time according to claim 3 cuts off the pipe cutting machine of chamfering simultaneously, it is characterized in that: the side of described piping support seat (20) arranges the V-arrangement fork shaft bearing (21.1) that tube one-way cylinder (21) drives, V-arrangement fork shaft bearing (21.1) acts on the surface of material pipe (15), makes the material pipe (15) of rotation reduce the amplitude of beating.
CN201310436481.6A 2013-09-23 2013-09-23 Cut off chamfering one lathe tool and the pipe cutting machine of clamped one time cut-out chamfering simultaneously Expired - Fee Related CN103480872B (en)

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CN103949906A (en) * 2014-05-04 2014-07-30 陈婷 Pipe fitting clamping device
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CN112045347A (en) * 2020-08-07 2020-12-08 山东鸿陆精工机械有限公司 Double-wall gas rail pipe machining device and machining process
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Publication number Priority date Publication date Assignee Title
CN103949906A (en) * 2014-05-04 2014-07-30 陈婷 Pipe fitting clamping device
CN104588686A (en) * 2015-02-05 2015-05-06 柳燕明 Cutting and chamfering control device and pipe cutting machine
CN104588686B (en) * 2015-02-05 2017-02-01 柳燕明 Cutting and chamfering control device and pipe cutting machine
CN105921819A (en) * 2016-06-12 2016-09-07 中车青岛四方机车车辆股份有限公司 Pipeline automatic discharge processing equipment and application method thereof
CN106426373A (en) * 2016-11-11 2017-02-22 四川多联实业有限公司 Automatic feeding system for cutting-off of PVC pipes
CN106426373B (en) * 2016-11-11 2018-01-30 四川多联实业有限公司 A kind of automatic feed system for pvc pipe cut-out
CN107052377A (en) * 2016-11-29 2017-08-18 常州中车汽车零部件有限公司 A kind of Combined turning tool
CN109954894A (en) * 2018-12-26 2019-07-02 西安航天动力机械有限公司 One kind being used for cylindrical member cutting off tool and its application method
CN111774584A (en) * 2020-06-03 2020-10-16 中浙高铁轴承有限公司 Numerical control lathe machining process for metal bar or pipe
CN112045347A (en) * 2020-08-07 2020-12-08 山东鸿陆精工机械有限公司 Double-wall gas rail pipe machining device and machining process
CN112846834A (en) * 2021-02-04 2021-05-28 成都超德创机电设备有限公司 Electromagnetic brake disc processing frock

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