CN106964660B - A kind of long core bar device subtracting wall for metal pipe material cold-drawn - Google Patents

A kind of long core bar device subtracting wall for metal pipe material cold-drawn Download PDF

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Publication number
CN106964660B
CN106964660B CN201710306963.8A CN201710306963A CN106964660B CN 106964660 B CN106964660 B CN 106964660B CN 201710306963 A CN201710306963 A CN 201710306963A CN 106964660 B CN106964660 B CN 106964660B
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China
Prior art keywords
metal pipe
right end
pipe material
end cap
plug
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CN106964660A (en
Inventor
帅美荣
李华英
李海滨
楚志兵
秦建平
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Taiyuan University of Science and Technology
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Taiyuan University of Science and Technology
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/16—Mandrels; Mounting or adjusting same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)

Abstract

A kind of long core bar device subtracting wall for metal pipe material drawing, belongs to metal pipe material hard-drawn technique field.It is characterized in：Left and right both ends are formed respectively with pressurization hole and the core sleeve of tank filler sleeve is mounted in the plug housing of tubulose, the left and right end cap for being formed with centre bore is connect with the left and right end of plug housing respectively by left and right screw group, the centre bore of left and right end cap is connected to pressurization hole, tank filler sleeve respectively, and with pressue device interface and refueling device orifice, the outside of left end cap is connect with drawing head.Advantage is to reduce to take off in rod motion to the end of metal pipe material and the damage of inner and outer surfaces；Mitigate the plug weight that large diameter thin wall metal tube subtracts wall processing；Mandrel surface abrasion is reduced, plug service life is extended；Simplify the lubricating process of metal pipe internal surface, reduces lubricant consumption and environmental pollution.

Description

A kind of long core bar device subtracting wall for metal pipe material cold-drawn
Technical field
The invention belongs to metal pipe material hard-drawn technique fields, and in particular to a kind of long core subtracting wall for metal pipe material cold-drawn Bar device.
Background technology
Currently, in the production process that metal pipe material subtracts wall deformation processing, the plug of use is single-layer metal or multilayer The solid mandrel that metal is constituted.There are two types of principal modes, and one is short mandrel rods, as shown in Figure 1, being mainly used for the cold of metal pipe material Roll in cold-drawn process.It is characterized in：Plug length is slightly longer than the length of metal pipe material deformed area, in deformation process, core Stick has fixed position in deformed area, and there are relative motions between plug and metal pipe material.The disadvantage is that mandrel surface and metal Tubing contact surface lubricating difficulties, will produce strong sliding friction, cause the inner surface state of metal pipe material to degenerate, are easy to shape The defects of at scratching, being bonded so that the energy expenditure of process of deformation increases, and increases breaking when thin-walled pipe drawing subtracts wall Rate.Another kind is long plug, is mainly used in the process that metal pipe material hot rolling subtracts wall extension.It is characterized in：Plug length is big In or close to metal pipe material length, in deformation process, plug is movement in deformed area, plug and metal pipe material it Between may exist, can not also have relative motion, the i.e. mode of production of " floating core rod " and " retained mandrel ".The disadvantage is that de- stick Difficulty, the cold-drawn that long plug is rarely used in metal pipe material subtract in wall production process, and especially large diameter thin wall metal tube subtracts wall Deformation processing.
Invention content
Subtracting the long core bar device of wall for metal pipe material cold-drawn the object of the present invention is to provide a kind of, it can be efficiently against Disadvantage of the existing technology.
The invention is realized in this way：As shown in Figure 2：It is characterized in that：Left and right both ends are formed respectively with pressurization hole 9 and refuel The mandrel 6 in hole 10 is installed in the plug housing 7 of tubulose, left and right end cap 8,8/ by left and right screw group 16,16/ respectively with core 7 left and right end of stick housing is connected, and left and right end cap 8,8/ is inconsistent with 6 left and right end of mandrel respectively, left and right end cap 8,8/ The centre bore that is formed with of center be connected respectively with the pressurization hole 9 at 6 left and right end of mandrel, tank filler sleeve 10, and with left end pressue device Interface 11 is connected with right end refueling device interface 12, and the outside of left end cap 8 is connect with drawing head 13.
Advantages of the present invention and good effect are：
(1) it reduces and takes off in rod motion to the end of metal pipe material and the damage of inner and outer surfaces；
(2) mitigate the plug weight that large diameter thin wall metal tube subtracts wall processing；
(3) mandrel surface abrasion is reduced, plug service life is extended；
(4) lubricating process for simplifying metal pipe internal surface reduces lubricant consumption and environmental pollution.
Description of the drawings
Fig. 1 is metal pipe material plug drawing process of deformation figure；
Fig. 2 is structure of the invention sectional view；
In figure：1-drawing stent；2-metal pipe billets；3-fixed core bars；4-short mandrel rods；5-for drawing clamping Tube head；6-mandrels；7-plug housings；8-left end caps；8/- right end cap；9-pressurization holes；10-tank filler sleeves；11-pressurization dresses Set interface；12-refueling device interfaces；13-drawing heads；14-drawing roller dies；15-shoe cream rooms；16-left screw groups；16/— Right screw group.
Specific implementation mode
The embodiment of the present invention is：
As shown in Figure 2：When implementation steel pipe drawing to be carried out, metal pipe billet 2 is sleeved on the outer of plug housing 7 first Face, then long core bar device is placed in drawing roller die 14, then from refueling device interface 12 by tank filler sleeve 10 to shoe cream room 15 Interior oiling, then pressurizeed from pressue device interface 11 into shoe cream room 15 by hole 9 of pressurizeing, so that pressure in shoe cream room 15 is reached Between 0.63-40Mpa, then pulling force applied to long core bar device by drawing head 13, metal pipe billet 2 is made to subtract by drawing roller die 14 Wall reaches design size requirement.Subtract wall after processing is completed, depressurized by pressue device interface 11, plug housing 7 is in back Contracting state makes pressure relaxation between plug housing 7 and metal pipe billet 2, disappears, generates gap, metal hollow billet is exited, complete gold Belong to pipe cold-drawn process.

Claims (1)

1. a kind of long core bar device subtracting wall for metal pipe material cold-drawn, it is characterized in that：Left and right both ends are formed respectively with pressurization hole （9）And tank filler sleeve（10）Mandrel（6）It is installed on the plug housing of tubulose（7）It is interior, left and right end cap（8、8/) pass through left and right spiral shell Nail group（16、16/）Respectively with plug housing（7）Left and right end is connected, left and right end cap（8、8/）Respectively with mandrel（6）It is left and right End is inconsistent, left and right end cap（8、8/）The centre bore that is formed with of center respectively with mandrel（6）The pressurization hole at left and right end（9）、 Tank filler sleeve (10) is connected, and is connected with left end pressue device interface (11) and right end refueling device interface (12), left end cap (8) outside is connect with drawing head (13).
CN201710306963.8A 2017-05-04 2017-05-04 A kind of long core bar device subtracting wall for metal pipe material cold-drawn Active CN106964660B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710306963.8A CN106964660B (en) 2017-05-04 2017-05-04 A kind of long core bar device subtracting wall for metal pipe material cold-drawn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710306963.8A CN106964660B (en) 2017-05-04 2017-05-04 A kind of long core bar device subtracting wall for metal pipe material cold-drawn

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CN106964660A CN106964660A (en) 2017-07-21
CN106964660B true CN106964660B (en) 2018-09-18

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110449476A (en) * 2019-07-26 2019-11-15 安徽鑫旭新材料有限公司 It is a kind of hollow from cooling big load transmission of electricity copper bar processing technology

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB104117A (en) * 1916-08-29 1917-02-22 John Thomas Knowles Improvements relating to the Manufacture of Pipes or Tubing, particularly the Removal of Interior Burrs or similar Irregularities of Surface.
US2173099A (en) * 1937-01-28 1939-09-19 Vascoloy Ramet Corp Means and method of tube drawing
US2943729A (en) * 1956-05-18 1960-07-05 Boeing Co Contractable ram mandrels
US4195390A (en) * 1977-01-03 1980-04-01 Scientific Technologies, Inc. Apparatus and method for manipulation and sleeving of tubular members
US4697447A (en) * 1985-01-22 1987-10-06 National Research Development Corporation Plug drawing of tubes and other hollow items
DE102012107375A1 (en) * 2011-08-12 2013-02-14 GFM - GmbH Device for forging hollow component e.g. pipe, has control unit that controls rotary drive element in dependence on rotational position of forging mandrel with respect to forging tools that are arranged symmetrically about forging axis
CN106391713A (en) * 2016-10-31 2017-02-15 太原科技大学 Mandrel rolling method for metal tubular product

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB104117A (en) * 1916-08-29 1917-02-22 John Thomas Knowles Improvements relating to the Manufacture of Pipes or Tubing, particularly the Removal of Interior Burrs or similar Irregularities of Surface.
US2173099A (en) * 1937-01-28 1939-09-19 Vascoloy Ramet Corp Means and method of tube drawing
US2943729A (en) * 1956-05-18 1960-07-05 Boeing Co Contractable ram mandrels
US4195390A (en) * 1977-01-03 1980-04-01 Scientific Technologies, Inc. Apparatus and method for manipulation and sleeving of tubular members
US4697447A (en) * 1985-01-22 1987-10-06 National Research Development Corporation Plug drawing of tubes and other hollow items
DE102012107375A1 (en) * 2011-08-12 2013-02-14 GFM - GmbH Device for forging hollow component e.g. pipe, has control unit that controls rotary drive element in dependence on rotational position of forging mandrel with respect to forging tools that are arranged symmetrically about forging axis
CN106391713A (en) * 2016-10-31 2017-02-15 太原科技大学 Mandrel rolling method for metal tubular product

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