CN101648225A - Stretching auxiliary mechanism of tractor - Google Patents
Stretching auxiliary mechanism of tractor Download PDFInfo
- Publication number
- CN101648225A CN101648225A CN200810041745A CN200810041745A CN101648225A CN 101648225 A CN101648225 A CN 101648225A CN 200810041745 A CN200810041745 A CN 200810041745A CN 200810041745 A CN200810041745 A CN 200810041745A CN 101648225 A CN101648225 A CN 101648225A
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- pipe
- control wheel
- guidance control
- internal mold
- stretching auxiliary
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Abstract
The invention relates to a stretching auxiliary mechanism of a tractor, which comprises an external mold (5), a core bar (7), a pipe billet (10), an internal mode (60), and at least more than one guidance control wheel (70) between the core rod (7) and the internal mold (60), wherein the guidance control wheels (70) pass through and are fixedly arranged on the core rod (7), and the guidance control wheels (7) are separated from each other at equal intervals by intermediate spacers (80); and the angle of the guiding direction of the guidance control wheels (70) is vertical to the end surface ofthe molds. The stretching auxiliary mechanism has the following advantages that: everywhere of the pipe wall is stressed evenly when the pipe billet is guided into the molds, thereby avoiding the easily-generated phenomenon of uneven wall thickness in the prior art; and the yield and the product quality of steel pipes are improved, and the economic benefit for an enterprise is improved.
Description
Technical field
The present invention relates to a kind of machine drawing equipment, relate in particular to the drawing mechanism in a kind of machine drawing equipment.
Background technology
Machine drawing claims drawbench again, is mainly used in the draw production of seamless steel pipe.Machine drawing is mainly formed (as shown in Figure 1) by following parts: chain 1, drag hook 2, jaw dolly 3, clamp 4, external mold 5, external mold be fixedly wall 9, pipe 10 of wall 6, internal mold and internal mold fixed screw (not shown), core bar 7, core bar fixed screw 8, core bar fixedly; Also has power-equipment in addition: motor 11, speed changer 12; Console 13.
Talk about from the material structure state of stainless-steel seamless pipe, all metals are all arranged in order by crystal grain and are formed, and in fact production technology of steel tube is exactly deformation processing, and in the deformation technique process, metal structure crystal grain can deform.Crystal grain is subjected to the influence of external force by original square or polygon cube, and is elongated along machine direction, and make it recover original form through solution treatment.
The power of all directions that it is suffered is depended in the crystal grain distortion that is produced by processing, and the suffered power of steel pipe pipe crystal grain is applied by mould, and it is formed (as shown in Figure 2) by the power of three aspects: the inside power (A) of one, being given it by external mold; Two, the outside power (B) that gives by internal mold; Three, the machine drawing jaw dolly power forward (C) of giving.Stressed on these three directions is out of shape it within the limits prescribed, to reach needed process.
Under the situation of at present intrinsic machine drawing structure, in the steel pipe process of tube plug drawing mill, be very easy to occur following phenomenon: because the size of internal mold is significantly smaller than the endoporus of pipe, so the angle of pipe when importing mould can not be vertical with the end face of mould, make the pipe can not producing balanced forces under the effect of interior external mold, crystal grain flows to stressed less one side with the importing of angle, thereby has produced the monolateral phenomenon of wall thickness.
Summary of the invention
The technical issues that need to address of the present invention have provided the stretching auxiliary body in a kind of machine drawing equipment, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The present invention includes: external mold, core bar, pipe, internal mold; Also comprise at least more than one, the control wheel of the guiding between core bar and internal mold; Described guiding control wheel pass and fixed in position on core bar, between the guiding control wheel with in the spacer sleeve spaced at equal intervals; The importing orientation angle of described guiding control wheel and the end face of mould are vertical.
Compared with prior art, the invention has the beneficial effects as follows: make pipe when importing mould, make tube wall stressed evenly everywhere, thereby the wall unevenness of having avoided being easy to generate under the prior art is spared phenomenon; Thereby improve the yield rate and the product quality of steel pipe, improve economic benefit of enterprises.
Description of drawings
Fig. 1 is a prior art Medium drawing mach ine equipment structure chart;
Fig. 2 is a drawing mechanism structure chart among Fig. 1;
Fig. 3 is a structure chart of the present invention;
Fig. 4 is a guiding control rolling hitch composition among Fig. 3;
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:
By Fig. 3, Fig. 4 as seen: the present invention includes: external mold 5, core bar 7, pipe 10, internal mold 60; Also comprise at least more than one, the control wheel of the guiding between core bar 7 and internal mold 60 70; Described guiding control wheel 70 pass and fixed in position on core bar 7, between the guiding control wheel 70 with in spacer sleeve 80 spaced at equal intervals; The importing orientation angle of described guiding control wheel 70 and the end face of mould are vertical;
Described at least more than one the quantity of guiding control wheel 70 is 3;
Described the 3rd guiding control wheel 70 and internal mold spacing are 3 ~ 5 times of pipe 10 diameters, and the distance between the guiding control wheel 70 also is 3 ~ 5 times of pipe 10 diameters.
Guiding control wheel is for when pipe is imported into mould, keeps the importing orientation angle of pipe and the vertical device of end face of mould, makes the pipe can producing balanced forces under the effect of interior external mold.
For when importing pipe, make pipe producing balanced forces under the effect of interior external mold, the end face that will control internal mold end face and pipe exactly keeps absolute vertical.The present invention controls the perpendicularity of internal mold in pipe by force by the endoporus of pipe, and the control blank imports direction and angle, and it is vertical with the pipe end face to make internal mold remain end face in working order, and homogeneous deformation is stressed by force to make all crystal grain.
Guiding control wheel profile of the present invention is 360 ° a cylinder, length dimension is the outside dimension of steel pipe pipe, the diameter of control wheel is pipe diameter of bore-1 ~ 3mm, this distance is the space that pipe endoporus lubricating layer passes through, the interstitial hole of control wheel is diameter of mandrel+0.10 ~ 0.20mm, for fear of the generation of stress, the present invention has adopted and has isolated fixing mode, that is to say to use spacer with each control wheel spaced at equal intervals on core bar.The installation site of control wheel on core bar can be calculated by following formula: control wheel and internal mold spacing are pipe diameter * (3 ~ 5), and the distance of control wheel and other control wheels is spacings of pipe diameter * (3 ~ 5).And the quantity of control wheel can decide according to the size of pipe diameter, and the diameter of pipe is big more, and control wheel number of elements is many more, and normal conditions use three control wheels to be effective.
Installation procedure of the present invention is: at first be the length of reserving spacer according to the number of elements that the control wheel is installed, the spacer of packing into earlier, reinstall a control wheel, reinstall middle spacer sleeve ... after reaching the number of elements of regulation, the control of packing into is taken turns and internal mold spacing spacer, reinstalls jack panel 90 (as shown in Figure 3) on the internal mold.
That the material of control wheel uses is GCr15 or GCr15SiMn.Processing method is to arrive surface smoothness 9 μ m with 200# emery wheel rubbing down after the modulation treatment, 45 is opened so that import the pipe endoporus in two ends, the fineness at two angles is wanted rubbing down to 9 μ m equally, the size of interlayer is that moving of directly organizational controls wheel gets final product, just control wheel interstitial hole size is an interlayer interstitial hole size, external diameter is 1/2 of a control wheel, and length is to decide according to the interval of control wheel.
Though the present invention aims at the stainless-steel seamless pipe design, it is equally applicable to the machining deformation of the metal tube of various materials.
Claims (3)
1. the stretching auxiliary body in the machine drawing equipment comprises: external mold (5), core bar (7), pipe (10), internal mold (60); It is characterized in that: also comprise at least more than one, the control wheel of the guiding between core bar (7) and internal mold (60) (70); Described guiding control wheel (70) pass and fixed in position on core bar (7), between the guiding control wheel (70) with in spacer sleeve (80) spaced at equal intervals; The importing orientation angle of described guiding control wheel (70) and the end face of mould are vertical.
2. the stretching auxiliary body in the machine drawing equipment according to claim 1 is characterized in that: described at least more than one the quantity of guiding control wheel (70) is 3.
3. the stretching auxiliary body in the machine drawing equipment according to claim 1 and 2, it is characterized in that: described the 3rd guiding control wheel (70) and internal mold spacing are 3 ~ 5 times of pipe (10) diameter, and the distance between the guiding control wheel (70) also is 3 ~ 5 times of pipe (10) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041745A CN101648225A (en) | 2008-08-15 | 2008-08-15 | Stretching auxiliary mechanism of tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041745A CN101648225A (en) | 2008-08-15 | 2008-08-15 | Stretching auxiliary mechanism of tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101648225A true CN101648225A (en) | 2010-02-17 |
Family
ID=41670613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810041745A Pending CN101648225A (en) | 2008-08-15 | 2008-08-15 | Stretching auxiliary mechanism of tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101648225A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117718347A (en) * | 2023-12-20 | 2024-03-19 | 四川万圣通精密机械制造有限公司 | Cold drawing machine |
-
2008
- 2008-08-15 CN CN200810041745A patent/CN101648225A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117718347A (en) * | 2023-12-20 | 2024-03-19 | 四川万圣通精密机械制造有限公司 | Cold drawing machine |
| CN117718347B (en) * | 2023-12-20 | 2024-06-14 | 四川万圣通精密机械制造有限公司 | Cold drawing machine |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100217 |