CN111687216A - Production line of three-roller skew rolling hollow shaft - Google Patents
Production line of three-roller skew rolling hollow shaft Download PDFInfo
- Publication number
- CN111687216A CN111687216A CN202010468811.XA CN202010468811A CN111687216A CN 111687216 A CN111687216 A CN 111687216A CN 202010468811 A CN202010468811 A CN 202010468811A CN 111687216 A CN111687216 A CN 111687216A
- Authority
- CN
- China
- Prior art keywords
- core
- mandrel
- rod
- core rod
- hollow
- 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
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 230000000149 penetrating effect Effects 0.000 claims abstract description 58
- 238000010438 heat treatment Methods 0.000 claims description 20
- 230000007246 mechanism Effects 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/06—Rolling hollow basic material, e.g. Assel mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
- B21B39/04—Lifting or lowering work for conveying purposes, e.g. tilting tables arranged immediately in front of or behind the pass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/14—Guiding, positioning or aligning work
Abstract
The invention relates to the technical field of plastic forming, in particular to a production line of a three-roller skew rolling hollow shaft. The core rod penetrating device is used for penetrating a core rod into the hollow blank coming from the variable-angle inclined rack, the hollow blank penetrating the core rod is continuously rolled and formed by the three-roller inclined rolling machine, and the core rod is pulled out from the formed hollow blank by the core rod pulling device. The invention can continuously process the hollow blank by penetrating the core rod, rolling and forming and pulling the core rod, quickens the rolling process of the hollow shaft and improves the production efficiency of the hollow shaft.
Description
Technical Field
The invention relates to the technical field of plastic forming, in particular to a production line of a three-roller skew rolling hollow shaft.
Background
The method for manufacturing the hollow shaft by using the rolling process is a hot research direction in the technical field of cross wedge rolling in recent years, wherein the three-roller skew rolling process adopts an optimal method for penetrating a core rod into a heated rolled piece blank in order to ensure the consistency of hollow inner diameters.
For example, a forming method is disclosed in a patent with Chinese patent No. CN1016588588, the grant publication date is 2011.04.20, the invention name is 'a method for forming a hollow shaft head blank of an automobile rear axle by cross wedge rolling', a round seamless steel pipe is heated to 800-1100 ℃, a mandrel is penetrated, and the steel pipe with the mandrel is sent between two roller type dies by an axial pushing device. The die is provided with two pairs of wedges, a steel pipe is firstly rolled under the action of the first pair of wedges, then the steel pipe is pushed into the second pair of wedges by the axial pushing device, when the die rotates for a second circle, the axial automatic positioning of a rolled piece is realized by depending on the initial section of the second pair of wedges, then the whole rolled piece is rolled and formed, and the production of a blank of the hollow shaft head of the rear axle of the automobile is completed every two circles.
The forming method still has the problems that the existing three-roller skew rolling mill cannot directly form the hollow blank, the hollow blank needs to be penetrated or withdrawn by a core rod on other devices, a production line matched with the hollow blank is not provided, the whole production process is intermittent, and the production efficiency is greatly reduced.
Disclosure of Invention
The invention aims to overcome the defects that the existing three-roller skew rolling mill can not directly form a hollow blank, the hollow blank needs to be penetrated or withdrawn on other devices, a production line matched with the hollow blank is not provided, the whole production process is intermittent, and the production efficiency is greatly reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
a production line of a three-roller skew rolling hollow shaft comprises a heating device, a variable-angle skew rack, a core penetrating rod device, a three-roller skew rolling machine and a core pulling rod device, wherein the heating device is used for heating hollow blanks, a conveying roller way is arranged between the heating device and the variable-angle skew rack, the conveying roller way conveys the heated hollow blanks to the upper end of the variable-angle skew rack from the heating device, the core penetrating rod device is used for penetrating core rods into the hollow blanks coming from the variable-angle skew rack, the hollow blanks penetrating the core rods are continuously rolled and formed by the three-roller skew rolling machine, and the core pulling rod device extracts the core rods from the formed hollow blanks. The heating device heats the hollow blank to the required temperature so as to generate plastic deformation, the conveying roller way conveys the heated hollow blank to the upper end of the variable-angle inclined rack, then the hollow blank automatically rolls down from the variable-angle inclined rack to the core rod penetrating device to perform core rod penetrating operation, the three-roller inclined rolling mill performs rolling forming after the core rod is penetrated, and finally the core rod is drawn out by the core rod pulling device, so that the hollow blank can be heated, the core rod is penetrated, the rolling forming, the core rod drawing and the like can be continuously processed, a complete production line is formed, the rolling flow of the hollow shaft is accelerated, and the production efficiency is improved.
Preferably, the angle-variable sloping platform comprises a rack, a hopper and a cam mechanism, wherein the upper end of the hopper is hinged to the rack, the lower end of the hopper is arranged in a downward sloping mode, the cam mechanism comprises a cam and a motor for driving the cam to rotate, the cam abuts against the lower side of the hopper, and the angle of inclination of the hopper is adjusted through rotation of the cam. The hopper is flat at first, so that the smooth transition of the hollow blank from the conveying roller way to the hopper is facilitated, then the motor drives the cam to rotate, the declination angle of the hopper is changed, and the hollow blank naturally rolls down to the core rod penetrating device to perform core rod penetrating operation.
Preferably, the mandrel penetrating device comprises a mandrel penetrating guide rail frame, a V-shaped groove, a mandrel and a mandrel penetrating clamp, the V-shaped groove is used for positioning the hollow blank falling from the variable-angle inclined table frame, the mandrel penetrating clamp is arranged on the mandrel penetrating guide rail frame in a sliding manner, the mandrel penetrating clamp clamps the mandrel and drives the mandrel to slide, and the mandrel slides along the axis of the hollow blank. The V-shaped groove can receive the hollow blank rolled from the variable-angle inclined rack, has a positioning function, and the core rod is clamped by the core rod penetrating rod and penetrates into the hollow blank.
Preferably, the V-shaped groove is arranged on the core rod guide rail frame in a liftable manner, a core rod baffle is arranged at one end of the V-shaped groove, a core rod abdicating groove which is opened at the upper end of the core rod baffle and extends downwards is arranged on the core rod baffle, the core rod abdicating groove is used for a core rod to pass through, when the core rod passes through, the core rod passes through the core rod abdicating groove, and the hollow blank is propped against the core rod baffle. Before the mandrel is threaded, the V-shaped groove is lifted to a designated position, the hollow blank is conveyed to the V-shaped groove through the variable-angle inclined rack, the mandrel is clamped by the mandrel-threading clamp, the mandrel is clamped by the clamp when the mandrel is threaded, the mandrel passes through the hollow blank and passes through the mandrel-threading abdicating groove, the end surface of the hollow blank is blocked by the mandrel-threading baffle plate to realize the positioning of the mandrel in the hollow blank, the V-shaped groove descends to the position below the table surface of the mandrel-threading guide rail rack after the mandrel is threaded, the mandrel with the hollow blank is clamped by the mandrel-threading clamp to continuously slide forwards, and the mandrel is loosened and withdrawn after the hollow blank with the mandrel is placed on the working table surface of the three.
Preferably, the core rod pulling device comprises a core rod guide rail frame, a core rod stop block and a core rod clamp, the core rod stop block is used for stopping the formed hollow blank, the core rod clamp is arranged on the core rod guide rail frame in a sliding mode, the core rod clamp clamps the core rod and drives the core rod to slide, the core rod slides along the axis of the hollow blank, and a core rod abdicating groove for the core rod to pass through is formed in the core rod stop block so that the core rod is separated from the formed hollow blank. After the hollow blank with the core rod is rolled, the core rod clamp moves to clamp the core rod and then moves reversely, and the hollow blank is separated from the core rod due to the blocking of the core rod check block, so that the separation work is completed.
Preferably, the core pulling rod stop block is arranged on the core pulling rod guide rail frame in a lifting mode, a core pulling rod baffle is arranged at one end of the core pulling rod stop block, the core pulling rod abdicating groove is formed in the upper end of the core pulling rod baffle in an opening mode and extends downwards, when the core pulling rod is pulled out, the core pulling rod penetrates through the core pulling rod abdicating groove, and the hollow blank is blocked by the core pulling rod baffle. When the core rod clamp clamps the core rod, the core rod stop block firstly descends below the table top of the core rod guide rail frame to prevent interference, when the core rod clamp moves reversely, the core rod clamp ascends above the table top, the core rod passes through the core rod abdicating groove, the hollow blank is stopped by the core rod baffle plate, and the core rod and the hollow blank are separated.
Preferably, the core rod stopper is provided with a blanking surface which is arranged in a downward inclined manner, and the blanking surface is positioned below the hollow blank during core rod pulling. After the core rod is drawn away, the hollow blank automatically rolls off the blanking surface into the collecting device.
The invention has the beneficial effects that: the heating device heats the hollow blank to the required temperature so as to generate plastic deformation, the conveying roller way conveys the heated hollow blank to the upper end of the variable-angle inclined rack, then the hollow blank automatically rolls down from the variable-angle inclined rack to the core rod penetrating device to perform core rod penetrating operation, the three-roller inclined rolling mill performs rolling forming after the core rod is penetrated, and finally the core rod is drawn out by the core rod pulling device, so that the hollow blank can be heated, the core rod is penetrated, the rolling forming, the core rod drawing and the like can be continuously processed, a complete production line is formed, the rolling flow of the hollow shaft is accelerated, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the following drawings without inventive labor.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the variable angle stage according to the present invention;
FIG. 3 is a schematic view of the structure of the mandrel of the present invention;
FIG. 4 is a schematic structural view of a mandrel threading device according to the present invention;
fig. 5 is a schematic structural view of the core rod drawing apparatus of the present invention.
Reference numerals: the core rod drawing machine comprises a heating device 1, a variable-angle inclined rack 2, a rack 21, a hopper 22, a cam 23, a core rod penetrating device 3, a core rod penetrating guide rail frame 31, a V-shaped groove 32, a core rod 33, a core rod penetrating clamp 34, a shaft neck 35, a core rod penetrating baffle 36, a core rod penetrating yielding groove 37, a three-roller inclined rolling mill 4, a core rod drawing device 5, a core rod guide rail frame 51, a core rod stopper 52, a core rod clamp 53, a core rod yielding groove 54, a core rod baffle 55, a hollow blank 6 and a conveying roller way 7.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
A production line for a three-roll skew-rolled hollow shaft according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
Example (b): as shown in figures 1 to 5 of the drawings,
a production line of a three-roller skew rolling hollow shaft comprises a heating device 1, a variable-angle skew rack 2, a core rod penetrating device 3, a three-roller skew rolling machine 4 and a core rod pulling device 5, wherein the heating device is used for heating a hollow blank 6, a conveying roller way 7 is arranged between the heating device and the variable-angle skew rack, the conveying roller way conveys the heated hollow blank to the upper end of the variable-angle skew rack from the heating device, the core rod penetrating device is used for penetrating a core rod into the hollow blank coming from the variable-angle skew rack, the hollow blank penetrating the core rod is continuously rolled and formed by the three-roller skew rolling machine, and the core rod pulling device pulls out the core rod from the formed hollow blank. The heating device heats the hollow blank to the required temperature so as to generate plastic deformation, the conveying roller way conveys the heated hollow blank to the upper end of the variable-angle inclined rack, then the hollow blank automatically rolls down from the variable-angle inclined rack to the core rod penetrating device to perform core rod penetrating operation, the three-roller inclined rolling mill performs rolling forming after the core rod is penetrated, and finally the core rod is drawn out by the core rod pulling device, so that the hollow blank can be heated, the core rod is penetrated, the rolling forming, the core rod drawing and the like can be continuously processed, a complete production line is formed, the rolling flow of the hollow shaft is accelerated, and the production efficiency is improved.
The variable-angle inclined rack comprises a rack 21, a hopper 22 and a cam mechanism, wherein the upper end of the hopper is hinged to the rack, the lower end of the hopper is arranged in a downward inclined mode, the cam mechanism comprises a cam 23 and a motor driving the cam to rotate, the cam abuts against the lower side of the hopper, and the inclination angle of the hopper is adjusted through rotation of the cam. The hopper is flat at first, so that the smooth transition of the hollow blank from the conveying roller way to the hopper is facilitated, then the motor drives the cam to rotate, the declination angle of the hopper is changed, and the hollow blank naturally rolls down to the core rod penetrating device to perform core rod penetrating operation.
The mandrel penetrating device comprises a mandrel penetrating guide rail frame 31, a V-shaped groove 32, a mandrel 33 and a mandrel penetrating clamp 34, the mandrel is designed to be of a symmetrical structure so as to be convenient for rapid clamping of the mandrel, the design of journals 35 at two ends is convenient for positioning and stress of the clamp, and the diameters of short shaft sections at two ends are smaller than that of a long shaft section in the middle so as to be convenient for positioning and guiding when the mandrel penetrates into a hollow blank. The V-shaped groove is used for positioning the hollow blank falling from the variable-angle inclined rack, the mandrel penetrating clamp is arranged on the mandrel penetrating guide rail frame in a sliding mode, the mandrel penetrating clamp clamps the mandrel and drives the mandrel to slide, the mandrel slides along the axis of the hollow blank, the V-shaped groove can receive the hollow blank rolling from the variable-angle inclined rack, the positioning effect is achieved, and the mandrel penetrating rod clamps the mandrel and penetrates into the hollow blank. The V-shaped groove is arranged on the guide rail frame of the core penetrating rod in a lifting way, one end of the V-shaped groove is provided with a baffle 36 of the core penetrating rod, the baffle of the core penetrating rod is provided with a core penetrating rod abdicating groove 37 which is opened at the upper end of the baffle of the core penetrating rod and extends downwards, the core penetrating rod abdicating groove is used for the core rod to pass through, when the core rod passes through, the core rod passes through the core penetrating rod abdicating groove, the hollow blank material is propped against the baffle of the core penetrating rod, before the core penetrating rod, the V-shaped groove is lifted to a designated position, the hollow blank material is conveyed to the V-shaped groove through the inclined frame with a variable angle, the core penetrating rod clamp clamps clamp the core rod, the core rod passes through the hollow blank material when the core rod passes through, the core penetrating rod abdicating groove is penetrated through, the end face of the hollow blank material is blocked by the baffle of the core penetrating rod, the core rod positioning of the hollow blank material is realized, after the core rod passes through, the V-shaped groove is lowered to the And (5) working procedures.
The core pulling rod device comprises a core pulling rod guide rail frame 51, a core pulling rod stop block 52 and a core pulling rod clamp 53, wherein the core pulling rod stop block is used for stopping the formed hollow blank, the core pulling rod clamp is arranged on the core pulling rod guide rail frame in a sliding mode, the core pulling rod clamp clamps a core rod and drives the core rod to slide, the core rod slides along the axis of the hollow blank, a core pulling rod abdicating groove 54 for the core rod to pass through is formed in the core pulling rod stop block, so that the core rod is separated from the formed hollow blank, after the rolling of the hollow blank with the core rod is completed, the core pulling rod clamp moves to clamp the core rod and then moves reversely, and due to the stopping of the core pulling rod stop. The core pulling rod stop block is arranged on the core pulling rod guide rail frame in a liftable mode, a core pulling rod baffle 55 is arranged at one end of the core pulling rod stop block, the core pulling rod abdicating groove is formed in the upper end opening of the core pulling rod baffle and extends downwards, when the core pulling rod is pulled out, the core rod penetrates through the core pulling rod abdicating groove, the hollow blank is blocked by the core pulling rod baffle, when the core pulling rod clamp clamps the core rod, the core pulling rod stop block firstly falls below the table top of the core pulling rod guide rail frame to prevent interference, when the core pulling rod clamp moves reversely, the core pulling rod stop block rises above the table top, the core rod penetrates through the core pulling rod abdicating groove, the hollow blank. The core pulling rod check block is provided with a blanking surface which is arranged in a downward inclining mode, the blanking surface is located below the hollow blank during core pulling, and after the core rod is pulled away, the hollow blank automatically rolls off the blanking surface to the collecting device.
The specific process of the production line is as follows: the heating device heats the hollow blank to the required temperature, the conveying roller way conveys the heated hollow blank to the upper end of the hopper, the hopper is declined to enable the hollow blank to automatically roll down into the V-shaped groove, the V-shaped groove is lifted to the designated position, the fixture clamps the core rod to pass through the hollow blank and pass through the core rod passing abdicating groove when the core rod passes through, the end surface of the hollow blank is blocked by the core rod passing baffle plate to realize the positioning of the core rod in the hollow blank, the V-shaped groove descends to the position below the table surface of the core rod passing guide rail frame after the core rod passes through, the core rod passing fixture clamps the core rod passing through the hollow blank to continue sliding forwards, the hollow blank passing through the core rod is placed on the working table surface of the three-roller skew rolling mill to loosen the core rod and withdraw, then the core rod is rolled and formed by the skew rolling mill, when the core rod is clamped by the three-roller fixture, and then the hollow blank is lifted above the table top, the core rod passes through the core-pulling rod abdicating groove, the hollow blank is blocked by the core-pulling rod baffle, and the hollow blank automatically rolls off the blanking surface into the collecting device.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A production line of a three-roller skew rolling hollow shaft is characterized by comprising a heating device, a variable-angle skew rack, a core penetrating rod device, a three-roller skew rolling machine and a core pulling rod device, wherein the heating device is used for heating hollow blanks, a conveying roller way is arranged between the heating device and the variable-angle skew rack, the conveying roller way conveys the heated hollow blanks to the upper end of the variable-angle skew rack from the heating device, the core penetrating rod device is used for penetrating core rods into the hollow blanks coming down from the variable-angle skew rack, the hollow blanks penetrating the core rods are continuously rolled and formed by the three-roller skew rolling machine, and the core pulling rod device extracts the core rods from the formed hollow blanks.
2. The production line of the three-roller skew rolling hollow shaft according to claim 1, wherein the variable angle skew rack comprises a frame, a hopper and a cam mechanism, the upper end of the hopper is hinged on the frame, the lower end of the hopper is arranged in a downward inclination manner, the cam mechanism comprises a cam and a motor for driving the cam to rotate, the cam abuts against the lower side of the hopper, and the inclination angle of the hopper is adjusted through the rotation of the cam.
3. A production line for three-roll skew rolling hollow shafts according to claim 1 or 2, characterized in that the mandrel passing device comprises a mandrel guide rail frame, a V-shaped groove, a mandrel and a mandrel clamp, the V-shaped groove is used for positioning the hollow blank falling from the variable angle skew frame, the mandrel clamp is slidably arranged on the mandrel guide rail frame, the mandrel clamp clamps the mandrel and drives the mandrel to slide, and the mandrel slides along the axis of the hollow blank.
4. The production line of the three-roller skew rolling hollow shaft according to claim 3, wherein the V-shaped groove is liftably disposed on the mandrel guide rail frame, a mandrel baffle is disposed at one end of the V-shaped groove, a mandrel receding groove is disposed on the mandrel baffle and extends downward from an upper end of the mandrel baffle, the mandrel receding groove is used for passing a mandrel, the mandrel passes through the mandrel receding groove when the mandrel passes through, and the hollow blank abuts against the mandrel baffle.
5. The production line of a three-roller skew rolling hollow shaft according to claim 1, characterized in that the core pulling rod device includes a core pulling rod guide rail frame, a core pulling rod stopper and a core pulling rod clamp, the core pulling rod stopper is used for stopping the formed hollow blank, the core pulling rod clamp is slidably disposed on the core pulling rod guide rail frame, the core pulling rod clamp clamps the core rod and drives the core rod to slide, the core rod slides along the axis of the hollow blank, and the core pulling rod stopper is provided with a core pulling rod abdicating groove for the core rod to pass through, so that the core rod is separated from the formed hollow blank.
6. A production line of a three-roller skew rolling hollow shaft according to claim 5, characterized in that the core rod stopper is liftably arranged on the core rod guide rail frame, one end of the core rod stopper is provided with a core rod baffle, the core rod abdicating groove is opened from the upper end of the core rod baffle and extends downwards, when the core rod is extracted, the core rod passes through the core rod abdicating groove, and the hollow blank is blocked by the core rod baffle.
7. A production line of a three-roller skew rolling hollow shaft according to claim 5, wherein the core-pulling rod stopper is provided with a blanking surface which is arranged in a downward inclination manner, and the blanking surface is positioned below the hollow blank during core-pulling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468811.XA CN111687216A (en) | 2020-05-28 | 2020-05-28 | Production line of three-roller skew rolling hollow shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468811.XA CN111687216A (en) | 2020-05-28 | 2020-05-28 | Production line of three-roller skew rolling hollow shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111687216A true CN111687216A (en) | 2020-09-22 |
Family
ID=72478458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010468811.XA Pending CN111687216A (en) | 2020-05-28 | 2020-05-28 | Production line of three-roller skew rolling hollow shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111687216A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2657823A1 (en) * | 1976-12-21 | 1978-06-22 | Schloemann Siemag Ag | Rolling mill for mfr. of seamless tubes from billets - using a skew rolling mill with mandrel or hole press |
| CN201511046U (en) * | 2009-10-30 | 2010-06-23 | 济南第二汽车配件有限公司 | Cross wedge rolling hollow shaft type loading and unloading device |
| CN102765131A (en) * | 2012-08-14 | 2012-11-07 | 海宁新光阳光电有限公司 | Device and method for pulling core rod in preparation process of aluminum oxide ceramic pipe |
| CN207806516U (en) * | 2017-12-27 | 2018-09-04 | 大连金雕铸锻工业有限公司 | It is machined automatic charging device |
-
2020
- 2020-05-28 CN CN202010468811.XA patent/CN111687216A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2657823A1 (en) * | 1976-12-21 | 1978-06-22 | Schloemann Siemag Ag | Rolling mill for mfr. of seamless tubes from billets - using a skew rolling mill with mandrel or hole press |
| CN201511046U (en) * | 2009-10-30 | 2010-06-23 | 济南第二汽车配件有限公司 | Cross wedge rolling hollow shaft type loading and unloading device |
| CN102765131A (en) * | 2012-08-14 | 2012-11-07 | 海宁新光阳光电有限公司 | Device and method for pulling core rod in preparation process of aluminum oxide ceramic pipe |
| CN207806516U (en) * | 2017-12-27 | 2018-09-04 | 大连金雕铸锻工业有限公司 | It is machined automatic charging device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211191726U (en) | Steel pipe flaring equipment | |
| CN113634663B (en) | Automatic punching machine and process for hole arrangement of edge of metal plate | |
| CN111604376A (en) | Method for forming hollow stepped shaft by three-roller skew rolling/punching combination | |
| CN111687216A (en) | Production line of three-roller skew rolling hollow shaft | |
| CN111687215A (en) | Equipment for cross wedge rolling of hollow shaft | |
| CN211276398U (en) | Automatic barbell rod forging press | |
| LU502223B1 (en) | Rolling production line for hollow shafts | |
| CN113560347B (en) | Rolling cooling integrated equipment of metal sheet | |
| CN215432466U (en) | Draw first and draw straightening blank all-in-one of contracting | |
| CN216900004U (en) | Gas cylinder hydrostatic test annotates half water mechanism | |
| US3400567A (en) | Method and apparatus for straightening and untwisting elongated metal sections | |
| CN112058937A (en) | Long hollow tube inner wall thinning forming method | |
| CN205949508U (en) | Tensile expanding machine of tubular metal resonator | |
| CN214212454U (en) | Draw first many and draw straightening blank all-in-one | |
| CN212760365U (en) | Rod and wire outlet guide | |
| CN220239629U (en) | Multi-target perforating device for obliquely rolling seamless steel tube | |
| US2063689A (en) | Manufacture of tubes | |
| CN107497954A (en) | A kind of booster-type necking machine | |
| CN111618099A (en) | Piercing plug circulation replacement device of piercing mill | |
| US1968455A (en) | Method and apparatus for forming pipe | |
| CN216175918U (en) | Clamping device for mold production | |
| CN116890033B (en) | Preparation method of pipe | |
| CN217528762U (en) | Shaping equipment for changing metal round pipe into square pipe | |
| CN114700384B (en) | Automatic seamless steel tube drawing machine of unloading | |
| CN212703682U (en) | Piercing plug circulation replacement device of piercing mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200922 |
|
| RJ01 | Rejection of invention patent application after publication |