Classifications

• • 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
  • 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
  • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills

Definitions

• the present invention relates to an inclined press machine used for producing a steel-free pipe.
• Fig. 1 shows the rolling of a roll on an inclined mill.
• FIG. 1 is a front view showing a plug 2, a pipe 3, and a fixed show 4.
• the base tube 3 is pulled in the tangential direction by the peripheral speed of the impression roll 1 and slid against the fixed show 4, so that the fixed tube 4 is slid.
• the wear surface 5A, 5B, 5 as shown in FIGS. 2 and 3 is formed on the shower surface of the 44.
• Fig. 2 In addition, in Fig. 2,
• 5A shows the wear portion when the thin-walled tube is pressed
• 5B shows the wear portion when the thick-walled tube is pressed.
• the entire surface of the fixed show 4 is based on thermal stress.
• FIG. 4 is a front view showing the disk 6 of the tilting press.
• This disk 6 has a very large diameter, for example, about 3 m, in order to make the contact surface of the raw pipe 3 appropriate. As a result, the entire equipment becomes large, and it is impossible to apply it to conventional equipment in a space. Comparing the peripheral speed of the roll 1 and the forward speed of the raw tube 3, the disk rotates in the direction of travel of the raw tube 3 at about 6: 1. When the user 6 is used, 85% of the slip between the raw pipe 3 and the disk is a slip phenomenon. ⁇
• the gap is smaller than a certain value, it is inversely proportional to the gap, and if it is larger than a certain value, it is constant. This constant value is about 20% of the reaction force applied to the rolling roll.
• Fig. 5 shows the relationship between the OPI as disclosed in Japanese Utility Model Publication No. 56-80503. It is a front view showing a roller shot on an inclined court press ⁇ "10 9. This roller shot 10 is an idler ⁇ -la and rotates. Therefore, in this case, since the roller 10 is an idle roller, the pipe 3 is not used. Escapes into the gap between the Appeal Roll 1 and the Roller Rule 10, the Roller Rule 10 does not pull out the pipe 3. In order to prevent the occurrence of the above-mentioned sticker phenomena, there is a possibility that the sticky phenomena may be caused by the suspension of the court.
• the invention provides a tilt-type press that stably supports the tube under pressure by a compact steel structure and enables a smooth press.
• the porpose is to do .
• a tiltable press machine which is inclined at the right angle, uses a pair of oscillating drive rollers with an entrance angle and an exit angle to squeeze a pair of drive rollers. To the rule! ⁇ One touching position
• Fig. 1 is a front view showing a fixed show in an inclined press
• Fig. 2 is a side view showing the fixed show of Fig. 1 taken out
• Fig. 3 is a second view.
• FIG. 4 is a cross-sectional view
• Fig. 4 is a front view showing the disk-shape of the tilt-type press
• Fig. 5 is a front view of the tilt-type press.
• FIG. 6 is a side view showing an inclined press machine according to an embodiment of the present invention.
• FIG. 7 is a front view showing the inclined press machine according to an embodiment of the present invention.
• Front view, Fig. 8 shows multiple rollers
• Fig. 9 shows the relationship between the gap and the reaction force applied to the chassis when the shower is placed.
• Fig. 9 shows the tangential canopy reaction force.
• FIG. 3 is a diagram showing the relationship between the occurrence rate of stickers and the incidence rate of flare.
• Fig. 6 shows a tilt-type court press according to one example of the invention.
• FIG. 7 is a front view showing a rolled state by the tilting-type press machine.
• the court roll 21 has an entrance side angle and an exit side angle, and is inclined S at an advance angle of, for example, 10 to 12 degrees, and has a circle on the trough 24.
• the sales piece 25 can be moved forward in the ⁇ direction while rotating in the circumferential direction.
• the marketing piece 25 on the trough 2 is pushed by the pusher 27 while being guided on the canon 26, and the rolls 2 It can be inserted into 1.
• drive Q-lash 28 is located in the upper and lower positions between the two rolls 21.
• the drive roller show 28 has an entry-side surface angle that reduces the outer diameter from the axial center toward the entry end. It has an exit side angle that reduces the outer diameter from the central portion in the direction toward the exit side.
• the drive shower 28 has a center ⁇ inclined at an angle of, for example, 3 to 4 degrees with respect to the axial direction of the raw tube 29. ⁇ It is possible to obtain the velocity component along the forward direction of the raw pipe 29 on its circumference. It is said that.
• the drive roller show 28 has a constant progress.
• the slip phenomenon is smaller than that of the show, and the drilling efficiency is lower.
• the surface of the shell does not damage the surface of the pipe 29
• Tube 29 can be obtained.
• the drive roller show 28 is installed as follows. Immediately, the installation part of the drive roller show 28 is sandwiched between the appellation rolls 21, and the entrance has a canon 26, and the appellation ⁇ — There is a 3 inch universal jersey, a plug 23 and a plug bar support on the exit side, etc., making it a very narrow space. Therefore, installing the drive roller 28 and its drive in such a narrow space would be very difficult. .
• the current is a 3 inch universal jersey, a plug 23 and a plug bar support on the exit side, etc.
• the coupling with the can 26 is so severe that the pore size of the canon 26 is set so that it can barely pass through the rust piece 25, and If the thickness of the part near the port 30 is reduced, the joint 26 and the self-contained joint can be made.
• ⁇ 4 4 of the drive roller show 28 is a bearing.
• Do-Live Library 28 is a self-service
• the drive device can be forcibly driven by the hydraulic motor 31 via the drive motor 30.
• the drive may be an electric motor.
• the round piece 25 on the trough 24 can be inserted into the compression roll 21 under the push of the pusher 27, and furthermore, the plug 2 It is pierced and confronted with 3.
• the perforated tube 29 is expanded and abuts against the upper and lower drive rollers 28.
• the drive roller 28 is forcibly hardened at a speed higher than the peripheral speed of the impression roll 21, and therefore, the pipe 29 has a thin wall.
• the base tube 29 may slip between the drive roller housing 28 and the pressure roll 21 to cause a sticker phenomenon. There is no.
• the generally converged tube 29 is pulled in the tangential direction of the confrontation roll 21, and the concourse d — rule 21 and the drive
• the drive roller 28 will rotate at a speed slightly faster than the peripheral speed of the roll 21, although it will try to slide into the gap between you and 28.
• the pipe 29 is the drive roller 28, and the pipe 29 and the drive roller 28 that are generated at this time are connected to each other.
• the shudder reaction force is the pressing force by the shell in the direction A shown in FIG. 7, and the tangential force is the shear force by the roller shear. -Torque due to friction with
• the tilt-type pressing machine includes a drivable drive roller having an entrance side angle and an exit side angle attached to the impression roll. It is arranged at a constant advancing angle at the position where it contacts. Therefore, the compact structure makes it possible to stably support the raw pipe during the court, and to conduct a smooth court.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
• Control Of Metal Rolling (AREA)
• Press Drives And Press Lines (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=15992233

Family Applications (1)

Country Status (5)

Cited By (2)

Families Citing this family (8)

Citations (2)

• 1983
  • 1983-09-24 JP JP17521183A patent/JPS6068104A/ja active Granted
• 1984
  • 1984-09-18 WO PCT/JP1984/000450 patent/WO1985001458A1/ja active IP Right Grant
  • 1984-09-18 DE DE8484903453T patent/DE3478580D1/de not_active Expired
  • 1984-09-18 EP EP19840903453 patent/EP0156922B2/en not_active Expired - Lifetime
  • 1984-09-20 CA CA000463676A patent/CA1251954A/en not_active Expired

Patent Citations (2)

Non-Patent Citations (1)

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