CN87205687U

CN87205687U - Multipurpose machine for cutting-off pipes and cutting screws

Info

Publication number: CN87205687U
Application number: CN 87205687
Authority: CN
Inventors: 吴声震
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-03-21
Filing date: 1987-03-21
Publication date: 1988-01-06

Abstract

The utility model discloses a multipurpose machine for cutting-off pipes and cutting screws. The utility model is characterized in that a pipe is fixed, while a cutting tool rotates around the circumcircle of the pipe and carries out the transverse feed and the longitudinal feed to realize the goals of cutting off the pipe or processing the screws of the pipe. The utility model has the advantages of simple structure and light weight and low cost. The machine is suitable for the factory processing, and the machine can move to the construction site of the pipelining for operation.

Description

Multipurpose machine for cutting-off pipes and cutting screws

The utility model relates to the device of a kind of pipe cut-out or cutted thread, and particularly a kind of pipe that is used for the bigger high-strength seamless steel pipe of external diameter cuts off, car silk multiple purpose aeroplane.

Existing pipe cuts off, the machine for threading bed, its work characteristics is that pipe (being workpiece) rotates, and cutting tool cuts off or cutted thread do traverse feed, and this just requires the spindle bore of lathe and length much bigger than engine lathe, because workpiece is very long, its driving power is also just bigger simultaneously.It is high that therefore existing pipe cuts off, the machine for threading bed generally is complex structure, body heavy, power reaches price greatly.For example:the cut-out of S1-232 type pipe, machine for threading bed, diameter of work 32～140,38 kilowatts of of general of about power, 7 tons of weight, 9.5 ten thousand yuan of prices, and for example S1-223 type pipe cut-out, machine for threading, diameter of work 114-426,66 kilowatts of general power, 30 tons of weight, 28.5 ten thousand yuan of prices.Since petrochemical industry etc. industrial a large amount of be that on-the-spot pipeline is installed and service work, obvious existing pipe cuts off, the machine for threading bed can't be applied to the job site.

The purpose of this utility model is that a kind of improved pipe cut-out, car silk multiple purpose aeroplane will be provided, and it should be simple in structure, cheap and can move to the job site easily.

The utility model be achieved in that the outer surface, garden (stretching out the main spindle box part) of large aperture front-end of spindle with the perpendicular direction of main shaft on the driven bevel pinion Z that an axle head is a right handed screw (pitch t) is housed _From, it is enclosed within the driving bevel gear Z of spindle hole inner cylindrical on the one hand with sky _MainBe meshed, the nut portion of screw rod and tool rest constitutes the worm drive pair on the other hand, and cutter is laterally moved on the guide rail of the garden ring cowling plate that is connected with the front-end of spindle face.In addition, main shaft and its interior Z of empty cover _MainEnd the free gear Zb of gear Za and end face band pawl is housed respectively, Za is through change gear Z ₁-Z ₂Connect with Zb, so just constitute horizontal differential feed mechanism of moving forward.Change gear Z ₁-Z ₂Sky is enclosed within on the length feed screw rod (pitch t), relies on the end face pawl of cover and screw rod to connect or leave whether to realize long feed, when main shaft rotates, and the Z of its front end of one side _FromAround being envisioned for static Z _MainRevolution, in revolution, just produce the rotation (puddle mixer on for example casting, its roller produces spinning motion with main shaft gyration the time) spinning motion drives that worm drive are secondary to make cutter to the workpiece feeding, the motion of its tail end Za makes cutter leave workpiece on the other hand, and its moving line is: Za → change gear Z ₁-Z ₂→ Zb → Z _Main→ Z _From→ screw pair → tool rest (being cutter).The feed velocity of cutter deducts horizontal differential feed amount=(1-ZaZ that rate of departure just obtains each cutter when changeing of main shaft ₂: Z ₁Zb) Z _MainT/Z _FromIf, Za=Zb.Z _Main=2Z _FromT=8 button/inch, Z ₁=100, Z ₂=99, then the effect of pipe when cutting into cutoff tool, is just realized cutting off in the amount of feeding=0.06.If when carrying out the turning taper thread, because therefore tapering 1:16 has following relational expression: (establish X, y is respectively the vertical, horizontal amount of feeding) with the regular screw threads lathe tool

X＝32y

X=TZa/Z ₁=25.4/K(K-workpiece is buckled number)

Y=(ZaZ ₂: Z ₁Zb-1) Z _MainT/Z _From

If T=8 button/time, Za=Zb, Z _Main=2Z _From, then when K=11,

Try to achieve Za/Z ₁=32/44, Z ₂/ Zb=45/32

Therefore change change gear Z ₁=44, Z ₂=45 and change gear and length feed screw rod are connected, at this moment screw tool also has a Za → Z except above-mentioned horizontal differential feed ₁→ length feed screw rod (owing to be fixed on the fuselage nut) even → drive whole main spindle box also cutter make length feed, the processing of taper thread is promptly finished in this two resultant motion

As make y=0 in the formula, i.e. ZaZ ₂=Z ₁Just obtain the turning of garden column jecket screw thread during Zb.

The utility model than it existing pipe cut off, the machine for threading bed, its advantage is that simple in structure, weight, power consumption and price all can descend significantly, can move to the pipeline construction field operation easily simultaneously.

The utility model will be further described below in conjunction with accompanying drawing.

Accompanying drawing is the schematic diagram of a kind of concrete structure of utility model.

With reference to accompanying drawing, (be Z when pipe (10) passes tubular driving bevel gear (5) _Main) endoporus after, adjustable shelf (21), (11) and fixed mount (20), (9) also tightened up before and after the school was good.Starter motor (6), making worm screw (18) rotation drive worm gear (19) through the V-belt is that main shaft (4) rotates.This time-division two-way motion: (1) main shaft (4) → driven bevel pinion (is Z _From) (2) rotation is (around being envisioned for static Z _MainIn revolution time, produce rotation) → screw pair → tool rest (1) is in the guide rail upper edge direction of feed feeding of the garden ring cowling plate (3) that connects with the front-end of spindle face; (2) main shaft (4) → gear Za → change gear Z ₁-Z ₂→ gear Zb(closes and is with the handwheel (8) of clutch pawl) → Z _Main→ Z _From→ screw pair → tool rest (1) is left in garden ring cowling plate (3) guide rail upper edge withdrawing direction, this two tunnel reverse mutually motion constitutes the horizontal differential feed campaign of feed velocity greater than rate of departure, thereby realizes the cut-out (this moment, main spindle box did not move on the fuselage bed surface) of pipe.After pipe is cut off, promptly shut down and unclamp before and after adjustable shelf and fixed mount unload pipe, the withdrawing of starting shooting then, clamping pipe repetitive operation again after the shutdown.For the turning gas pipe thread, should be by aforementioned calculation formula allotment change gear Z ₁With Z ₂Said cutter traverse is to differential feed campaign (being to leave workpiece at this moment) above obtaining, also make its specific practice of cutter acquisition length feed motion (this moment, main spindle box moved on the bed surface guide rail) be: handwheel (14) is combined with cover (13), make length feed screw rod (12) rotation, because nut (16) is fixed on fuselage (15).Move on the bed surface guide rail of fuselage (15) so drive whole main spindle box, this two resultant motion has realized the turning of garden awl or garden post (y=0 this moment) screw thread.For ease of assembling, main shaft casing (17) two parts are assembled.In addition, driven bevel pinion (2) can be formed one by bevel gear and screw rod two parts.When the utility model is constructed at the scene, should be earlier that the road wheel (not shown) pinch in or the wheel bottom plug of the ground contact portion of fuselage (15) is dead, make whole device lay stable, add ballast, then the good whole device in school comprises that the balance weight (not drawing among the figure) on the adjustment garden cover plate (3) gets final product work, perhaps for reducing turning speed and the quality that vibration cutting improves screw thread, driven bevel pinion Z _FromCan be 2～3, promptly increase by 2～3 screwer, the cutter of this moment be by 180 ° or 120 ° stagger its point of a knife axial distance t/2 or t/3 composition multiple cut cutterheads at interval.

Claims

1, a kind of pipe cut-out, car silk multiple purpose aeroplane that is used for cutting off pipe or pipe car silk is made up of fixed mount, the adjustable shelf of fuselage, main spindle box and fixing tube, it is characterized in that:

(a) by main shaft [4], tubular driving bevel gear [5] (Z _Main), driven bevel pinion [2] (Z _From), tool rest [1], garden ring cowling plate [3], Z _FromTail end screw rod and the nut portion of tool rest [1] the worm drive pair, gear Za, Zb and the change gear Z that form ₁-Z ₂Constituting the horizontal differential feed mechanism of moving forward of rotating tool, is that guide rail links to each other between tool rest [1] and the garden ring cowling plate [3] wherein, main shaft [4] and empty its interior Z that overlaps _MainTail end be respectively Za and Zb, change gear Z ₁-Z ₂Be positioned on the length feed screw rod [12];

(b) longitudinal feed mechanism of being made up of screw rod that is positioned main spindle box [12] and the nut [16] that is fixed on fuselage [15] is arranged between main spindle box and fuselage [15] bed surface.

2, pipe cut-out according to claim 1, car silk multiple purpose aeroplane is characterized in that on the garden ring cowling plate (3) balance weight being arranged.

3, pipe cut-out according to claim 1, car silk multiple purpose aeroplane is characterized in that (2) 1～3 of driven bevel pinions, and its corresponding is (1) 1～3 of tool rest.