CN2637057Y

CN2637057Y - Pipe cutter

Info

Publication number: CN2637057Y
Application number: CN 03208863
Authority: CN
Inventors: 何维胜
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-02
Filing date: 2003-09-02
Publication date: 2004-09-01
Anticipated expiration: 2013-09-02

Abstract

The utility model discloses a pipe cutting machine which can smoothly implement trimming and cutting to pipe heads with high efficiency; a sleeve-shaped shell is internally provided with a rotary shaft; the interior of the rotary shaft is provided with a cavum which can contain a knife carrier; the front end part of the knife carrier is fixed with a cutter head; the rear part of the cavum of the rotary shaft is provided with a knife pushing carrier which can move axially and rotate synchronously with the rotary shaft; the front end of the knife pushing carrier is a cutting plane which matches with the cutting surface of the knife carrier; the knife carrier is articulated with the rotary shaft; the knife carrier is driven to rotate about a pin shaft by the forward movement of the knife pushing carrier; the cutter head extends out of the cavum of the rotary shaft to implement a cutting feeding motion. The utility model can implement cutting and correction actions of the end surface of the pipe head with low rotating speed and large torsion.

Description

Casing knife

Technical field

The utility model relates to finishing, the cutter of tube material tube head end face.

Background technology

At present, in many equipment and the device, it is very frequent that tube material uses, as the condenser in the power plant, after rise plumber's skill and the installation of other member, pipe fitting all leaves a part of tube head usually, the cutting of tube head end face, smooth ten minutes trouble, and efficient is extremely low.

Technology contents

Technical task to be solved in the utility model provides a kind of casing knife, make its can be efficiently, entirely tube head is implemented finishing, cutting.

For achieving the above object, the utility model has adopted following technical scheme: casing knife, it is characterized in that: casing knife comprises canular housing, be provided with a rotating shaft in it, the inside of rotating shaft is provided with for the cavity that holds knife bar, the leading section of knife bar is fixed with cutter head, the rearward end of knife bar is a tilting tangent plane, constitute hinged cooperate with rotating shaft by bearing pin near tangent plane one side on the knife bar, the rotating shaft front end is provided with for knife bar front end and cutter head and stretches out and the opening of withdrawing, the cavity rear portion of rotating shaft is provided with the push broach bar that can move vertically and rotate synchronously with rotating shaft, and the front end of push broach bar is the tangent plane that cooperates with the tangent plane of knife bar.

As shown from the above technical solution, canular enclosure interior provides moment of torsion by set rotating shaft, during use, the rear end of rotating shaft is connected with the power output revolving shaft of hand held electric drill, the leading section of the knife bar of the inside of rotating shaft is fixed with cutter head, tangent plane one side and rotating shaft near its rear end on the knife bar are hinged by bearing pin, move forward by the push broach bar and to drive knife bar and rotate around bearing pin, cutter head is protruding realization cutting feed motion from the cavity of rotating shaft, cutting, when revising the condenser tube end surface, cutter head is from the inner feed of pipe fitting, progressively outwards do the cutting feed motion, the length of tube head cutting can be resisted against by the front end of canular housing locatees on the steel plate face of fixed fitting.The utility model can be realized cutting, the corrective action of the slow-speed of revolution, high pulling torque.

Summary of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of the utility model shaft;

Fig. 3 is the vertical view of Fig. 2;

Fig. 4 is the structural representation of the leading portion pipe fitting in the utility model;

Fig. 5 is the vertical view of Fig. 4;

Fig. 6 is the A-A cutaway view among Fig. 4.

The specific embodiment

In conjunction with Fig. 1, casing knife comprises canular housing 10, be provided with a rotating shaft 20 in it, the inside of rotating shaft 20 is provided with for the cavity 21 that holds knife bar 30, the leading section of knife bar 30 is fixed with cutter head 31, the rearward end of knife bar 30 is a tilting tangent plane 32, constitute hinged cooperate with rotating shaft 20 by bearing pin 40 near tangent plane 32 1 sides on the knife bar 30, rotating shaft 20 front ends are provided with for the front end of knife bar 30 and cutter head 31 and stretch out and the opening 22 of withdrawing, cavity 21 rear portions of rotating shaft 20 are provided with the push broach bars 50 that can move vertically and rotate synchronously with rotating shaft 20, and the front end of push broach bar 50 is the tangent plane 51 that cooperates with the tangent plane 32 of knife bar 30.When push broach bar 50 moves forward, tangent plane 51 abuts on the tilting tangent plane 32 in the rear end of knife bar 30, under the effect of power, knife bar 30 rotates around bearing pin 40, opening 22 liftings that knife bar 30 front ends and cutter head 31 are provided with from rotating shaft 20 front ends, touch and wait the pipe fitting termination of revising, cutting and do the cutting feed motion from pipe fitting inside to the pipe fitting outer wall, revise, after cutting finishes, the tangent plane 51 of the front end of push broach bar 50 breaks away from the tangent plane of the rear end of knife bar 30 32.

Described knife bar 30 cross sections are square, as Fig. 2, shown in 3, cavity 21 cross sections that hold knife bar 30 parts in the rotating shaft 20 are concavity, knife bar 30 can only rotate around its bearing pin 40, in conjunction with Fig. 1, the cavity 21 in the square-section of knife bar 30 and concavity cross section retrained each other when both relatively rotated, applying position by both provides moment of torsion like this, and need not to bear the task that moment of torsion is provided by bearing pin 40, the hole that holds push broach bar 50 in the rotating shaft 20 is a circular hole, the tail end of push broach bar 50 has the quarter butt 53 of a hexagonal section, this quarter butt 53 is used for connecting and the transmission moment of torsion with the power output shaft of electric drill, the shaft of push broach bar 50 is provided with a short pin 52, weak point pin 52 is vertical with the axial length direction of push broach bar 50, rotating shaft 20 is provided with bar hole 22, its length direction is consistent with the axial length direction of rotating shaft 20, the position, termination of short pin 52 is positioned at bar hole 22 and moves along its length direction, the short pin 52 and the position-limiting action of bar hole 22 and the square-section of knife bar 30 and the cavity 21 in concavity cross section retrain position-limiting action each other, can guarantee two

tangent planes

32,51 are in good cooperation position.

Referring to Fig. 1, be provided with between described knife bar 30 and the reentrant cavity 21 and order about the spring 60 that knife bar 30 remains in reentrant cavity 21 inside, be provided with between push broach bar 50 and the reentrant cavity 21 and order about the spring 70 that push broach bar 50 separates with two

tangent planes

32,51 on the knife bar 30.When knife bar 30 was in off working state, under the effect of spring 60, the cutter head 31 on the knife bar 30 was in the location status in the reentrant cavity 21.

Described spring 60 is a stage clip and between the back side and reentrant cavity 21 bottom surfaces of tangent plane 32 positions, spring 70 is a stage clip and is set on the shaft of push broach bar 50 that its two ends are between the technology step of push broach bar 50 and rotating shaft 20 inside.When off working state, spring 70 is passed push broach bar 50, two

tangent planes

32,51 backward and is broken away from each other, and when needing work, external force need overcome the elastic force of spring 70, and compression spring 70 moves forward push broach bar 50, and two

tangent planes

32,51 are in mated condition each other.

In conjunction with Fig. 1,4,5,6, described housing 10 be by before, during and after section pipe fitting 10a, 10b, 10c constitute with thread connecting mode each other, be provided with bearing 80 between the inside of stage casing pipe fitting 10b and the axle body of rotating shaft 20, connecting portion preceding, stage casing pipe fitting 10a, 10b is provided with the screw 90 with both fixed-site, and the front end of leading portion pipe fitting 10a offers the U-shaped gap.Housing 10 adopts the version of syllogic, help the assembling of internals on the one hand, the front end of leading portion pipe fitting 10a offers the U-shaped gap, can observe the position of waiting to revise tube head easily, cut to leading portion pipe fitting 10a in the time of simultaneously can avoiding cutter head 31 feedings, because before, stage casing pipe fitting 10a, 10b adopts the form that is threaded, just the U-shaped gap on the leading portion pipe fitting 10a can be adjusted to the position at cutter head 31 places very easily, utilize screw 90 will adjust suitable fixed-site, reliable in order to ensure screw 90 location, on the thread segment of leading portion pipe fitting 10a, offer the position of several groove shapes, these positions are arranged vertically, and in circumference range, evenly arrange four, the head abuts of screw 90 is to the groove bottom part at the position of groove shape, at this moment, preceding, stage casing pipe fitting 10a, the situation of rotating arbitrarily can not take place each other in 10b, i.e. both position relative fixed.

As shown in Figure 1, in, back segment pipe fitting 10b, 10c adopt engage thread to connect, the front end face of back segment pipe fitting 10c extends the inside of stage casing pipe fitting 10b and abuts on the bearing 80, thereby can play the effect of bearing (ball) cover.

The front end position of described rotating shaft 20 is provided with axle sleeve 100, axle sleeve 100 is rotatably assorted with rotating shaft 20 formations, when cutter head 31 is in cut state, is in axle sleeve 100 local locations that are reversed the position with cutter head 31 and combines and be abutted together, to realize rotating cutting movement with waiting to revise the tube head inwall.

Provided the concrete structure of push broach bar 50 among Fig. 1 with the best of the

tangent plane

32,51 of knife bar 30, be that

tangent plane

32,51 is smooth cambered surface, make both in conjunction with in processes of transmitting power, two

tangent planes

32,51 holding point contacts as far as possible, can guarantee like this both in conjunction with the time stuck phenomenon can not appear.The structure of above-mentioned two

tangent planes

32,51 is suitable for the tube head cutting, smooth of heavy wall or thin-wall pipe, tangent plane 32 can also be designed to plane or slightly be the curved surface shape of protuberance, the tangent plane 51 of Pei Heing can be designed to dome shape, smooth wedge shape or the taper of top ends with it, and this class formation form is suitable for the less occasion of cutting feed distance.The front end of knife bar 30 offers the square hole that cutter head 31 is installed, and square hole is perpendicular to the shaft core direction of rotating shaft 20, and the front end face of knife bar 30 is provided with the fixedly screw 110 of cutter head 31, and this structure helps the installation and the replacing of cutter head 31.

Claims

1, a kind of casing knife, it is characterized in that: casing knife comprises canular housing (10), be provided with a rotating shaft (20) in it, the inside of rotating shaft (20) is provided with for holding the cavity (21) of knife bar (30), the leading section of knife bar (30) is fixed with cutter head (31), the rearward end of knife bar (30) is a tilting tangent plane (32), knife bar (30) is gone up near tangent plane (32) one sides and is constituted hinged the cooperation with rotating shaft (20) by bearing pin (40), rotating shaft (20) front end is provided with for knife bar (30) front end and cutter head (31) and stretches out and the opening (22) of withdrawing, cavity (21) rear portion of rotating shaft (20) is provided with the push broach bar (50) that can move vertically and rotate synchronously with rotating shaft (20), and the front end of push broach bar (50) is the tangent plane (51) that cooperates with the tangent plane (32) of knife bar (30).

2, casing knife according to claim 1, it is characterized in that: described knife bar (30) cross section is square, cavity (21) cross section that holds knife bar (30) part in the rotating shaft (20) is a concavity, the hole that holds push broach bar (50) in the rotating shaft (20) is a circular hole, the tail end of push broach bar (50) has the quarter butt (53) of a hexagonal section, the shaft of push broach bar (50) is provided with a short pin (52), short pin (52) is vertical with the axial length direction of push broach bar (50), rotating shaft (20) is provided with bar hole (22), its length direction is consistent with the axial length direction of rotating shaft (20), and the position, termination of short pin (52) is positioned at bar hole (22) and moves along its length direction.

3, casing knife according to claim 1 and 2, it is characterized in that: be provided with between described knife bar (30) and the reentrant cavity (21) and order about knife bar (30) and remain in the inner spring (60) of reentrant cavity (21), be provided with two tangent planes (32) that order about on push broach bar (50) and the knife bar (30), the spring (70) that separate (51) between push broach bar (50) and the reentrant cavity (21).

4, casing knife according to claim 3, it is characterized in that: described spring (60) is between a stage clip and the back side that is positioned at tangent plane (32) position and reentrant cavity (21) bottom surface, spring (70) is a stage clip and is set on the shaft of push broach bar (50) that its two ends are positioned between the technology step of push broach bar (50) and rotating shaft (20) inside.

5, casing knife according to claim 1, it is characterized in that: described housing (10) be by before, during and after section pipe fitting (10a), (10b), (10c) connect threadably each other, be provided with bearing (80) between the axle body of the inside of stage casing pipe fitting (10b) and rotating shaft (20), before, the connecting portion of stage casing pipe fitting (10a), (10b) is provided with the screw (90) with both fixed-site, the front end of leading portion pipe fitting (10a) offers the U-shaped gap.

6, casing knife according to claim 1 and 2 is characterized in that: the front end position of described rotating shaft (20) is provided with axle sleeve (100), and axle sleeve (100) is rotatably assorted with rotating shaft (20) formation.

7, casing knife according to claim 4, it is characterized in that: described push broach bar (50) is smooth cambered surface with tangent plane (32), (51) of knife bar (30), the front end of knife bar (30) offers the square hole that cutter head (31) is installed, square hole is perpendicular to the shaft core direction of rotating shaft (20), and the front end face of knife bar (30) is provided with the fixedly screw (110) of cutter head (31).