CN1053569A - A kind of push-type hack-sawing machine - Google Patents

A kind of push-type hack-sawing machine Download PDF

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Publication number
CN1053569A
CN1053569A CN 90105410 CN90105410A CN1053569A CN 1053569 A CN1053569 A CN 1053569A CN 90105410 CN90105410 CN 90105410 CN 90105410 A CN90105410 A CN 90105410A CN 1053569 A CN1053569 A CN 1053569A
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CN
China
Prior art keywords
saw
sawing
push
machine
sawing machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 90105410
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Chinese (zh)
Inventor
杨贵铭
汪德科
陈长生
丁龙生
孙敦平
陈金华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
South Dynamic Machine Corp Of Ministry Of Aviation Industry
Original Assignee
South Dynamic Machine Corp Of Ministry Of Aviation Industry
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by South Dynamic Machine Corp Of Ministry Of Aviation Industry filed Critical South Dynamic Machine Corp Of Ministry Of Aviation Industry
Priority to CN 90105410 priority Critical patent/CN1053569A/en
Publication of CN1053569A publication Critical patent/CN1053569A/en
Pending legal-status Critical Current

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Abstract

The present invention relates to a kind of push-type hack-sawing machine, it is at original hacksawing machine only on the basis of moving linearly, make it increase the action that is lifted away from out the saw material on, in order to realize pushing away effectively saw, the direction of rotation of its driving motor is opposite with common hacksawing machine, and the sawtooth of saw blade accompanies one jiao of α between saw blade and the saw bow sliding rail plane simultaneously towards the direction that deviates from support.This push-type hack-sawing machine is particularly suitable for sawing major diameter cutting-resistant metal material.

Description

A kind of push-type hack-sawing machine
The present invention relates to a kind of push-type hack-sawing machine, it is specially adapted to the difficult cutting metal bar of sawing major diameter, belongs to straight blade sawing machine or sawing device class.
Development along with high-tech industry, the application of the cutting-resistant metal material of high temperature alloy and so on is increasing day by day also, and the price of metal materials such as high temperature alloy is high and machinability is not good, so the sawing of this class material has become a great problem, especially the major diameter bar in such material, contradiction is more outstanding.Common hacksawing machine and band sawing machine are powerless to it, and circular saw can not be used because of stiff problem, and the anode machine cuts has the problem that produces hardened layer to exist, and therefore are necessary to develop a kind of Special Equipment of such material down that is fit to.
The object of the present invention is to provide a kind of novel hacksawing machine, it is specially adapted to the sawing of the difficult cutting metal bar of major diameter.
The inventor thinks: cutting force is the key factor that influences the material machinability.Why there is " sawing the dark limit " phenomenon (sawing can't break through a certain sawing degree of depth and the phenomenon of stagnation) when using common hacksawing machine sawing major diameter cutting-resistant metal material, its reason mainly is when the sawing degree of depth reaches certain value, the chord length of cutting strengthens, therefore the number of teeth that participates in cutting on the saw blade simultaneously also just increases, the then corresponding minimizing of the cutting force of each monodentate, if the monodentate centripetal force is during less than necessary cutting force, incision promptly is tending towards stagnation, this moment, sawtooth skidded, and saw deeply no longer strengthens; In addition, the lengthening of swage set also causes the rubbing surface between cutter and saw material to increase, and cutting temperature rises rapidly, and it is bad to add chip removal, so seriously reduced the machinability of material.Experienced pincers worker is when the big material of sawing by hand, flush end saw bow linear reciprocation not, pendulum pushes away saw but two hands are done to have a downwarp, make swage set slightly curved, the result has reduced the number of teeth that saw blade participates in cutting effectively, promptly reduce the contact length between saw blade and saw material effectively, thereby made sawing smooth.This shows,, and change the movement locus of sawtooth, allow each instantaneously only have the minority tooth to cut simultaneously into, just be hopeful to address the above problem as long as change dragsaw for pushing away saw.
Push-type hack-sawing machine of the present invention promptly is that the sawtooth of its saw blade is made a kind of sawing machine around the circular swing motion of fixed point in advancing pushing away sawing, the difference of it and common hacksawing machine is: between the plane at its saw blade and saw bow sliding rail place an angle α is arranged, and the sawtooth of saw blade is towards the direction that deviates from support (this is the primary condition that pushes away saw); Described straight blade relies on the driving of hoist cylinder that one additional vertical motion is arranged when preceding pushing away (promptly towards the direction motion that deviates from support), causes saw bow to do clockwise swing with ram around pivot.
Certainly, for the saw of realizing coordinating that pushes away moves, also should make turning to of driving motor opposite with common hacksawing machine.
The action of its hydraulic system of common hacksawing machine and straight line dragsaw adapts, and it is that then hoist cylinder presses down the ram saw bow by the gravity feed when saw bow is in before the impulse stroke of support farthest moment, is gravity liquid feeding pressure so cut centripetal force; Disappear to dragsaw back segment oil pressure, centripetal force only is a ram saw bow gravity, and moment before finishing to impulse stroke, hydraulic coupling begins to lift the ram saw bow makes straight blade break away from the saw material; Oil pressure disappears once more subsequently, and saw bow enters dragsaw circulation next time.
Push-type hack-sawing machine of the present invention, then require hydraulic system to begin feed from the moment before the impulse stroke of support closest approach at saw bow, the centripetal force that pushes away the saw leading portion only is ram saw bow gravity, the later hydraulic coupling in stage casing will produce a kind of lift that lifts ram mechanism, and saw bow is swung to the direction of leaving the saw material around pivot with ram; When saw bow returns homeposition, the hydraulic pressure commutation, the ram saw bow falls, and beginning pushes away the saw working cycles for the second time.
If analyze the movement locus of push-type hack-sawing machine sawtooth each point of the present invention, we will find that this is the camber line that rule line fixed point is made straight-line and rotating motion, and they have in the interlaced character of saw node.Each sawtooth was constantly to cut material before entering the saw node, by leaving the saw material behind the node again in succession.So in fact, reduced the chord length of sawing, the result greatly reduces the number of teeth of participating in cutting simultaneously, causes original cutting-in " limit " to be broken, and has realized the normal sawing of the difficult cutting metal bar of major diameter smoothly.
Accompanying drawing 1 is a structural representation of the present invention.Among the figure, 1-support, 2-pivot, 3-ram, 4-saw bow, 5-connecting rod, 6-clamping device, 7-straight blade, 8-hoist cylinder.

Claims (2)

1, a kind of push-type hack-sawing machine is specially adapted to the difficult cutting metal bar of sawing major diameter, contains support 1, pivot 2, ram 3, saw bow 4, connecting rod 5, clamping device 6, straight blade 7 and hoist cylinder 8, it is characterized in that:
Between a, described straight blade 7 and the plane, saw bow 4 sliding rail place an angle α is arranged;
B, described straight blade 7 its sawtooth are towards the direction that deviates from support 1;
C, described straight blade 7 rely on the effect of 8 pairs of rams 3 of hoist cylinder that an additional vertical motion is arranged when preceding pushing away (promptly towards the direction motion that deviates from support 1), cause saw bow 4 to do clockwise swing with ram 3 around pivot 2.
According to the described a kind of push-type hack-sawing machine of claim 1, it is characterized in that 2, turning to of lathe driving motor is opposite with common hacksawing machine.
CN 90105410 1990-01-22 1990-01-22 A kind of push-type hack-sawing machine Pending CN1053569A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 90105410 CN1053569A (en) 1990-01-22 1990-01-22 A kind of push-type hack-sawing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 90105410 CN1053569A (en) 1990-01-22 1990-01-22 A kind of push-type hack-sawing machine

Publications (1)

Publication Number Publication Date
CN1053569A true CN1053569A (en) 1991-08-07

Family

ID=4879229

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 90105410 Pending CN1053569A (en) 1990-01-22 1990-01-22 A kind of push-type hack-sawing machine

Country Status (1)

Country Link
CN (1) CN1053569A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103480908A (en) * 2013-08-30 2014-01-01 广西玉柴机器股份有限公司 Hacksaw machine
CN108817541A (en) * 2018-08-15 2018-11-16 蚌埠市鸿鹄精工机械有限公司 A kind of feeding device of sawing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103480908A (en) * 2013-08-30 2014-01-01 广西玉柴机器股份有限公司 Hacksaw machine
CN108817541A (en) * 2018-08-15 2018-11-16 蚌埠市鸿鹄精工机械有限公司 A kind of feeding device of sawing machine

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WD01 Invention patent application deemed withdrawn after publication
C01 Deemed withdrawal of patent application (patent law 1993)