CN87203976U

CN87203976U - Pipe cutting machine

Info

Publication number: CN87203976U
Application number: CN 87203976
Authority: CN
Inventors: 吴声震
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-03-14
Filing date: 1987-03-14
Publication date: 1987-12-31

Abstract

The utility model discloses a pipe cutting machine used for cutting the pipe. The utility model is characterized in that the pipe is fixed, while a cutting knife rotates around the circumcircle of the pipe and carries out the cutting of the radial feed. The utility model has the advantages of simple structure and light weight and low cost. The machine is suitable for operation in factories, and the machine can move to the construction site of the pipelining for operation.

Description

Pipe cutting machine

The utility model relates to a kind of pipe shearing device, particularly a kind of shearing device that is used for cutting off the big latus rectum high-strength seamless steel pipe of using on the petrochemical industry.

Existing pipe cut-off machines bed, its work characteristics are that pipe (being workpiece) rotates, cutoff tool crosses feed, and this just requires the spindle bore of lathe and length much bigger than engine lathe, and be very long owing to workpiece (pipe) simultaneously, and its driving power is also just bigger.Therefore it is high that existing pipe cut-off machines bed generally is a complex structure, body is heavy, power reaches price greatly.Q115 type pipe cut-off machines bed for example, maximum diameter phi 152,16.125 kilowatts of general power, weight 6T, 40,000 yuan of the prices cut off.Even the Q116J type, maximum cut-out diameter only is φ 65,4.225 kilowatts of general power, weight 1.2T, 1.2 ten thousand yuan of prices.Because what industry such as petrochemical industry were a large amount of is that on-the-spot pipeline is installed and service work, obvious existing pipe cut-off machines bed can't be applied to the job site.

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

The front end (stretching out the casing part) that the utility model is achieved in that the large aperture main shaft is being equipped with a driven bevel pinion Z from (also can be made up of bevel gear and screw shaft two parts) with the perpendicular direction of main shaft, it is enclosed within the driving bevel gear Z principal phase engagement of elongated tubular in the spindle hole (aperture is slightly larger than maximum workpiece) on the one hand with sky, its axle head is the nut portion formation worm drive pair of a left-handed screw and tool rest on the other hand, and cutoff tool is laterally moved along the guide rail on the garden cover plate of front-end of spindle connection.In addition, the not end of its interior elongated tubular active umbrella wheel of main shaft and empty cover is equipped with travelling gear Za and Zb respectively, and Za is through change gear Z ₁-Z ₂Connect with Zb, just constitute horizontal differential feed mechanism of moving forward for this reason.When main shaft rotates, the Z of its front end of one side _FromAround Z _MainIt is secondary and make cutoff tool to the workpiece feed that rotation drives worm drive, and the motion of its tail end Za makes cutoff tool leave workpiece on the one hand, and its moving line is: Za → change gear (Z ₁-Z ₂) → Zb → Z master → Z is from → screw pair → tool rest → cutoff tool.The horizontal differential feed speed of cutoff tool when the feed velocity of cutoff tool deducts rate of departure and just obtains main shaft and whenever go around.The left-handed screw helical pitch is t if make, then horizontal differential feed amount=(1-(Za)/(Z ₁) (Z ₂)/(Zb)) (Z master)/(Z from) t, if Za=Zb, Z master=4Z is from t=2.5, Z ₁=100, Z ₂=99, the amount of feeding=(1-99/100) 4/1 2.5=0.1mm then

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

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

Fig. 1 is the schematic diagram of a kind of concrete structure of utility model.

Pass elongated tubular initiatively good front and back, school adjustable shelf (20), (13) and fixed mount (19), (11) and tighten up behind the endoporus of umbrella wheel (5) (being Z master) with reference to Fig. 1 when pipe (workpiece) (12).Starter motor (16), making worm screw (8) rotation drive worm gear (7) through the V-belt is that main shaft (4) rotates, this time-division two-way motion: (1) main shaft (4) → driven bevel pinion (3) rotation (around being envisioned for static Za)

→ screw pair → tool rest (1 ') and cutoff tool (2) are in garden cover plate (4 ') guide rail upper edge direction of feed feeding; (2) main shaft (4) → gear (9) (being Za) → change gear (15)-(14) (are Z ₁-Z ₂) → gear (10) (being Zb) → Z master → Z leaves in garden cover plate (4 ') guide rail upper edge withdrawing direction from → screw pair → tool rest (1) and cutoff tool (2), this two tunnel reverse mutually motion constitutes the horizontal differential feed campaign of feed velocity greater than rate of departure, thereby realizes cutting off the purpose of pipe (12).After pipe (12) is cut off, promptly shut down and unclamp before and after adjustable shelf, fixed mount unload, then motor (16) counter-rotating carrying out withdrawing, can cut off pipe again after shutting down.For ease of assembling, main spindle box divides upper box (6) and lower box (21) two parts.When the utility model is constructed at the scene, should be earlier that the road wheel (not shown) pinch in of the ground contact portion of fuselage (17) or plug is dead and add ballast (18), then the good whole device in school comprises that the balance (not shown) on the adjustment garden cover plate (4 ') gets final product work.

Claims

1, a kind of pipe cut-off machines that cuts off pipe is made up of fuselage, main spindle box and pipe fixed mount, it is characterized in that:

(a), pipe [12] by front and back adjustable shelf [20], [13] fixed mount [19], [11] are fastening leaves standstill.

(b), main spindle box is equipped with the horizontal differential feed slew gear of tool rest [1] (being cutter), it (is Z by the elongated tubular driving bevel gear [5] that sky is enclosed within main shaft [4] endoporus _Main), driven bevel pinion [3] (is Z _From) and be contained in main shaft [4] tail end travelling gear [9] (being Za), be contained in Z _MainTravelling gear of tail end [10] (being Zb) and change gear [15]-[14] (are Z ₁-Z ₂) form; Wherein with Z _MainThe Z that is meshed _FromIt is perpendicular to be positioned at its axis of main shaft [4] front end (outside casing) and main shaft, the axle head of gear [3] is a left-handed screw, nut on it and the tool rest [1] constitutes the worm drive pair, and tool rest [1] (together with cutoff tool [2]) can move at the guide rail on the closing disk [4 '] that is connected with the front-end of spindle face.

2, pipe cut-off machines according to claim 1 is characterized in that a relative side of closing disk (4 ') upper cutter head (1) has a balance weight.