CN2236378Y

CN2236378Y - Cutting machine with saw

Info

Publication number: CN2236378Y
Application number: CN 95234689
Authority: CN
Inventors: 张圣玉; 张治有
Original assignee: JINGUAN MOULDS DEVELOPMENT Co Ltd LONGKOU CITY
Current assignee: JINGUAN MOULDS DEVELOPMENT Co Ltd LONGKOU CITY
Priority date: 1995-09-13
Filing date: 1995-09-13
Publication date: 1996-10-02
Anticipated expiration: 2005-09-13

Abstract

The utility model discloses a band saw cutting machine, which comprises a bow-shaped frame 1, drive and driven wheels positioned at the bow-shaped frame 1, a band saw 4, a twist mechanism, a stepless speed change mechanism 18, a clamping mechanism 13, an upright column 8, a balance slide rod 12, a control cabinet 7, a hydraulic station 19, etc. The utility model is characterized in that the stepless speed change mechanism 18 is composed of a motor, an electromagnetic speed regulating motor, a gearbox and speed change controller. The utility model has the advantage of simple structure, low cost, wide speed change range (0 rpm to 17 rpm), stable running and long service life, and cuts the sheet metal with the thickness of no more than 1.30 m.

Description

The band saw cutting off machine

The utility model relates to a kind of band saw cutting off machine, belongs to a kind of equipment that cutting metal is used.

Existing band saw cutting off machine, based on the medium and small band saw lathe of cuts sheet material thickness＜1.30m, it is 1.30m that individual other reached cuts sheet material thickness, but has the following disadvantages: the one, and homemade band saw lathe, its stepless speed changing mechanism all needs to cost an arm and a leg from external introduction.The 2nd, the used stepless speed changing mechanism of home and abroad band saw lathe, its slewing range can only reach 3-17 rev/min, and in 3-17 rev/min of scope, can not once reach by cvt controller, and must preset three slewing ranges, again in each speed adjustable range by an auxiliary machinery, carry out infinitely variable speeds, during operating cost, slewing range is narrow, and the structure of its stepless speed changing mechanism is complicated again.

It is a kind of simple in structure that the purpose of this utility model is to provide, speed-regulating range width, and cost is low, the band saw cutting off machine that the scope of application is wide.

Technical solution of the present utility model is, this band saw cutting off machine, by the column 8 that is fixed on base 9 one ends, be fixed on the balance slide bar 12 of the base other end, one end is connected on the slip cap of column, the segmental support 1 that the other end and balance slide bar 12 touch mutually, lay respectively at the driving wheel 6 at these segmental support two ends, driven pulley 2, connect main, the band saw 4 of driven pulley, support also drives the oil cylinder 5 that segmental support moves up and down, and its output shaft is as the stepless speed changing mechanism 18 of driving wheel rotating shaft, make the vertical compositions such as twist mechanism that touch mutually of saw blade and workpiece, its special character is, described stepless speed changing mechanism 18 is by motor, the electromagnetic adjustable speed motor that links to each other with this motor, the gearbox that links to each other with this electromagnetic adjustable speed motor, and the speed setting controller that joins with the electromagnetic adjustable speed motor control end is formed.

No matter the driven wheel wheel face of this band saw lathe is parallel with the axis of column axle, certain included angle is still arranged, and also no matter this band saw lathe is that (as driving and driven wheel diameter is 80cm to which kind of model, 100cm, 130cm), can utilize this stepless speed changing mechanism to carry out speed change.

The wheel face of the described driving wheel of the technical program, driven pulley preferably tilts, and the axis angle α of its wheel face and column is 8 °-25 °.Can make band saw like this in rotary course, naturally form an inclination angle, reduced twist mechanism and made windup-degree when band saw and workpiece are vertical to be touched mutually, thereby reduced the suffered twisting resistance of band saw, avoid band saw is twisted off the generation of phenomenon, prolonged the service life of band saw.Angle [alpha] is too little, does not reach twist mechanism band saw is moved to when vertical with processing metal spare face, really reduces the purpose that it imposes on the band saw twisting resistance.Angle [alpha] is too big, though the twisting resistance that makes twist mechanism impose on band saw reduces, segmental support centre-of gravity shift is bigger, requires column intensity big, and the band saw running stability is poor, causes the reduction of cutting accuracy.

Because the utility model has adopted above-mentioned technical solution, when having overcome the described stepless speed changing mechanism of the technical program and being used on the band saw cutting off machine, can be bigger because of the torsional forces on the driven wheel, the axially-movable that exists with this stepless speed changing mechanism and can not be used in prejudice on the band saw cutting off machine, make it compared with prior art, during infinitely variable speeds, saved the mechanical gear shift device, enlarged slewing range, make slewing range to driven wheel by original 3-17 rev/min, bring up to 0-17 rev/min.Make production cost reduce by 2 times.Help applying of this product, avoided band saw cutting off machine, during cutting metal hot rolled plate section bar, need carry out gas cutting because of no money purchasing price costliness, annealing, the planing operation causes the waste of human and material resources, financial resources, time etc.

Provide embodiment of the present utility model below in conjunction with accompanying drawing, be used for further specifying the present technique solution.

The front view of an embodiment of Fig. 1-the utility model;

The rearview of Fig. 2-Fig. 1;

The left view of Fig. 3-Fig. 2;

The syndeton schematic diagram of stepless speed changing mechanism among Fig. 4-Fig. 3.

Wherein: segmental support 1, driven pulley 2 reverses righting mechanism 3, band saw 4,

oil cylinder

5,11,15,17,20, driving wheel 6, switch board 7, column 8, base 9, workbench 10, balance slide bar 12, clamping device 13, slip cap 14, tensioning mechanism 16, stepless speed changing mechanism 18, Hydraulic Station 19, hand-operated direction valve 21, motor 22, electromagnetic adjustable speed motor 23, gearbox 24, torq 25.

Embodiment 1, with reference to figure 1-Fig. 4.Column 8 is connected with base 9 bolts by its lower chassis, and slip cap 14 is a matched in clearance with column 8, and two set squares that are welded on the segmental support are connected with slip cap 14 by bolt.The lower end of balance slide bar 12 is fixedly connected on the other end of base 9, and touch mutually with pulley the upper end, and this pulley is fixed on the plate, and this plate is fixedlyed connected with segmental support.Column 8, balance slide bar 12 play a part balance, the motion of guiding segmental support.Segmental support 1 supports and moves up and down with it by cylinder 5.Driving wheel 6, the wheel face tilt of driven pulley 2, the angle α between wheel face and column 8 axis are 15 degree, and they all are positioned at the housing that segmental support 1 forms, and it is taken turns footpath D and is 1.30m.The motor 22 of stepless speed changing mechanism 18, electromagnetic adjustable speed motor 23, after gearbox 24 is fixedly connected sequentially as shown in Figure 4 structure, the housing of gearbox is connected on the segmental support 1 with bolt, the main shaft of gearbox fixedly is serially connected in the axis hole of driving wheel 6, at this moment, the axis of stepless speed changing mechanism becomes 15 ° of angles with horizontal line.(promptly the facade with segmental support 1 is vertical), integral hanging is on segmental support 1.The controller of stepless speed changing mechanism is installed on the switch board 7.Driven pulley is installed in the slotted hole of segmental support by rotating shaft.After driven wheel links to each other by band saw, realize unclamping and tension of driven pulley 2 by the tensioning mechanism 16 and the oil cylinder 20 that link to each other with the driven pulley rotating shaft and be installed in the segmental support back, to reach the purpose of regulating band saw elasticity and replacing band saw.

Workbench 10 bottoms have connected a flute profile slide block, and this slide block touches mutually with guide rail on being welded on base 9, and drive it by oil cylinder 11 and move forward and backward.Clamp mechanism 13 links to each other with base 9 by angle steel, and realizes move left and right and clamping by oil cylinder 17.Twist mechanism comprises torq 25 and reverses righting mechanism 3 formations.Torq 25 sidepieces are fixed on the bottom of segmental support 1, and the dovetail groove of torq bottom is stuck on the band saw 4, and can regulate the width of this groove by adjusting bolt.Reverse righting mechanism 3, top and segmental support 1 make its move left and right in the chute of segmental support by oil cylinder 15, and fix its position, another torq that the bottom is fixedly connected for bolt is connected.By switch board 7 control Hydraulic Stations 19, stepless speed changing mechanism 18 and reversal valve 21 reach the purpose of control complete machine work with this.

The course of work is, through switch board, Hydraulic Station and oil cylinder wait to be realized.Work piece is put on the workbench 10, it is moved to the precalculated position, move clamp mechanism 13 by oil cylinder 17 again, make to be cut part and to be fixed on the workbench firmly by oil cylinder 11.Promote to reverse on the width that righting mechanism 3 moves to work piece by oil cylinder 15, and it is fixed.Make band saw be in tension by tensioning mechanism 16 and oil cylinder 20.Drive segmental support 1 and band saw downslide by oil cylinder 5, approaching until band saw and work piece.Connect motor power and make stepless speed changing mechanism 18 work, and adjust rotating speed by the variable-speed controller that is located in the switch board.After giving speed command of variable-speed controller, speed instruction voltage and negative velocity feedback signal voltage relatively after, its difference signal is fed in the speed regulator and amplifies, signal voltage after the amplification and sawtooth waveforms stack, controlled transistorized conducting constantly, along with difference signal changes mobile pulse, thereby controlled the silicon controlled open angle, this pulse signal is transported in the electromagnetic adjustable speed motor by lead, the exciting curent of slip clutch that makes electromagnetic adjustable speed motor is along with variation, the rotating speed that is slip clutch changes along with the change of exciting curent, the rotating speed of this variation is again by the gearbox speed change, output is fit to the rotating speed of driving wheel rotation, is set at 0-17 rev/min here.Make the band saw rotary speed, adjust to the setting rotating speed gradually by zero.By being located at the speed that moves down of the Hydraulic Adjustable Speed valve control oil cylinder 5 in the switch board, promptly control the amount of feeding of band saw.When band saw moves to the bottom of driving wheel and just broken away from this when taking turns, band saw working face and horizontal angle are 15 °, when passing through the torq 25 of twist mechanism, it is 90 ° that torq makes the working face of band saw and horizontal angle, be band saw with to be cut metalwork vertical, by reversing righting mechanism 3, reduce the band saw vibrations again, the maintenance band saw steadily reaches the plumbness with metal covering.Help the band saw operate as normal, because band saw is subjected to a downward pressure in rotary course, thus contact with being cut metalwork all the time, thus cutting metal continuously.Cutting finishes, and cuts off the stepless speed changing mechanism working power, and makes band saw stop to move down by the hydraulic regulation valve.At this moment by oil cylinder 17 clamping device 13 is broken away from and be cut metalwork, two metalworks are separated, at this moment, by moving on to the precalculated position on the oil cylinder 5 drive band saws.Later utilize same principle to cut other metal derby again.When the need tape swapping is sawed, move reversal valve 21 to another location, at this moment, by oil cylinder 20 loosening tensioning mechanisms 16, make the driven pulley reach, reduce the distance between driven wheel, band saw can be taken off, change new band saw, at this moment reversal valve 21 is moved back to original position, make tensioning mechanism move driven pulley to appropriate location and fixing getting final product by oil cylinder 20.

Embodiment 2, with reference to figure 1-Fig. 4.The difference of this example and embodiment 1 is, the axis angle of the wheel face of driving wheel, driven pulley and column 8 is 8 °, and at this moment, the torsion that twist mechanism imposes on band saw 4 is bigger, require the torque resistant power of band saw strong, the structure of other parts and complete machine operation principle are identical with embodiment 1.

Embodiment 3, with reference to figure 1-Fig. 4.The difference of this example and embodiment 1 is, the angle of the wheel face of driving wheel, driven pulley and column 8 axis is 25 °, at this moment it is less that twist mechanism imposes on the torsion of band saw 4, help the vertical of band saw and cutting metal face, but the distance that is offset column because of the segmental support bottom is bigger, centre-of gravity shift requires the intensity of column big.And the segmental support running stability is poor slightly, and cutting accuracy is low slightly.Other parts structure and complete machine operation principle are identical with embodiment 1.

Embodiment 4, with reference to figure 1, Fig. 2, Fig. 4.This example and the difference of embodiment 1 are that the wheel face of driving wheel, driven pulley is parallel with column 8 axis, and at this moment to impose on the torsion of band saw 4 very big for twist mechanism, and torsion angle is 90 °, reverses purpose as long as the twisting resistance of band saw can reach by force.The band saw injection volume and good operational stability, the structure of other parts and complete machine operation principle are identical with embodiment 1.

Embodiment 5, with reference to figure 1-Fig. 4.The difference of this example and embodiment 1 is, the angle of the wheel face of driving wheel, driven pulley and column 8 axis is 15 °, and the wheel face diameter is 1.0m.The structure of other parts and operation principle are identical with embodiment 1.

Embodiment 6, with reference to figure 1-Fig. 4.The difference of this example and embodiment 1 is, the angle of the wheel face of driving wheel, driven pulley and column 8 axis is 20 °, and the wheel face diameter is 0.8m.The structure of other parts and operation principle are identical with embodiment 1.

Claims

1, a kind of band saw cutting off machine, it is by the column (8) that is separately fixed at base (9) two ends, balance slide bar (12), one end is connected on the sliding sleeve of column, the segmental support (1) that the other end and balance slide bar touch mutually, lay respectively at the driving wheel (6) at these segmental support two ends, driven pulley (2), connect main, the band saw of driven pulley (4), support and drive the oil cylinder (5) that segmental support moves up and down, its output shaft makes the vertical compositions such as twist mechanism that touch mutually of saw blade and workpiece as the stepless speed changing mechanism (18) of driving wheel rotating shaft, it is characterized in that, described stepless speed changing mechanism (18) is by motor, the electromagnetic adjustable speed motor that links to each other with this motor, the gearbox that links to each other with this electromagnetic adjustable speed motor, and the speed setting controller that joins with the electromagnetic adjustable speed motor control end is formed.

2, by the described band saw cutting off machine of claim 1, it is characterized in that, described driving wheel (6), the wheel face of driven pulley (2) tilts, and the angle α of this wheel face and column (8) axis is 8 °-25 °.

3, by the described band saw cutting off machine of claim 2, it is characterized in that, described driving wheel (6), the diameter of driven pulley (2) is 1.30m, and the angle α of their wheel face and column (8) axis is 15 °.