Counter-roller active power flexible spinning device for large cylinder

Patent metadata

Field	Value
Publication number	US-12370593-B2
Application number	US-202318321260-A
Country	US
Kind code	B2
Filing date	May 22, 2023
Priority date	Jan 9, 2023
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

Disclosed is a counter-roller active power flexible spinning device for a large cylinder, including a rack unit, a spindle unit, an outer roller unit, and an inner roller unit. A spindle turntable of the spindle unit is used to fix a cylinder blank. A second driver drives the spindle turntable to rotate, thereby achieving the rotation of a cylinder blank. A first driver drives the spindle turntable to be axially fed along a cylinder through a spindle platform. A third driver of the outer roller unit can drive an outer roller to rotate, and a fourth driver drives an outer roller seat to be radially fed along the cylinder at the top of an outer pillar. A fifth driver of the inner roller unit can drive an inner roller to rotate, and a sixth driver drives an inner roller seat to be radially fed along an inner roller disk.

First claim

What is claimed is:

1. A counter-roller active power flexible spinning device for a large cylinder, comprising:
a rack unit, comprising a base, inner pillars, outer pillars, and an inner roller disk, wherein the inner pillars and the outer pillars are both connected to the base, a distance between each outer pillar and a center of the base is greater than that between each inner pillar and the center of the base, and the inner roller disk is connected to one end, away from the base, of each inner pillar;
a spindle unit, comprising a spindle platform, a spindle turntable, a first driver, second drivers, and workpiece fixtures, wherein the spindle platform is slidably connected to the inner pillars, the first driver is fixed onto the base, an output end of the first driver is in transmission connection with the spindle platform, the spindle turntable is rotatably connected to the spindle platform, the second drivers are fixed onto the spindle platform, output ends of the second drivers are in transmission connection with the spindle turntable, the workpiece fixtures are arranged on the spindle turntable, and the workpiece fixtures are able to fix a blank to be formed;
an outer roller unit, comprising outer rollers, outer roller seats, third drivers, and fourth drivers, wherein the outer rollers are rotatably connected to the outer roller seats, the third drivers are fixed onto the outer roller seats, and output ends of the third drivers are in transmission connection with the outer rollers; the outer roller seats are slidingly arranged on the outer pillars; a reciprocating sliding direction of each outer roller seat is perpendicular to the rotation axis of the spindle turntable, and an extension line of a sliding route of each outer roller seat has an intersection point with the axis of the spindle turntable; the fourth drivers are fixed onto the outer pillars, and output ends of the fourth drivers are in transmission connection with the outer roller seats; and
an inner roller unit, comprising inner rollers, inner roller seats, fifth drivers, and sixth drivers, wherein the inner rollers are rotatably connected to the inner roller seats, the fifth drivers are fixed onto the inner roller seats, output ends of the fifth drivers are in transmission connection with the inner rollers, and the inner rollers are in one-to-one correspondence with the outer rollers; the inner roller seats are slidingly arranged on the inner roller disk; a reciprocating sliding direction of each inner roller seat is perpendicular to the rotation axis of the spindle turntable, and an extension line of a sliding route of each inner roller seat has an intersection point with the axis of the spindle turntable; the sixth drivers are fixed onto the inner roller disk, and output ends of the sixth drivers are in transmission connection with the inner roller seats;
wherein:
the outer pillars are provided with U-shaped through grooves;
the outer roller seats are slidably arranged in the U-shaped through grooves;
the inner roller disk is provided with U-shaped grooves in which the inner roller seats are slidably arranged; and
self-lubricating copper plates are provided:
between the outer roller seats and the U-shaped through grooves of the outer pillars; and
between the inner roller seats and the U-shaped grooves of the inner roller disk.

2. The counter-roller active power flexible spinning device for a large cylinder according to claim 1 , wherein the spindle platform is slidingly sleeved outside the inner pillars, and a sliding bearing is provided between the spindle platform and each inner pillar; a spindle propulsion screw is connected to the first driver, and the spindle propulsion screw is rotatably provided between the base and the inner roller disk; a spindle propulsion nut is connected to the spindle platform, and the spindle propulsion screw is in threaded connection with the spindle propulsion nut.

3. The counter-roller active power flexible spinning device for a large cylinder according to claim 1 , wherein one side, close to the inner pillar, of each outer pillar is provided with a slide rail, the spindle platform is provided with a slider in fit with the slide rail, and the slider is slidably arranged on the slide rail.

4. The counter-roller active power flexible spinning device for a large cylinder according to claim 1 , wherein a driving gear is connected to each second driver, a transmission gear is connected to the spindle turntable, the spindle turntable and the transmission gear are provided coaxially, and the driving gear is meshed with the transmission gear; a plurality of driving gears are provided, the second drivers are in one-to-one correspondence with the driving gears, and the driving gears are uniformly distributed circumferentially around the axis of the transmission gear.

5. The counter-roller active power flexible spinning device for a large cylinder according to claim 1 , wherein the workpiece fixtures are connected to the spindle turntable by fastening screws, and the connecting positions of the workpiece fixtures and the spindle turntable are adjustable; a plurality of workpiece fixtures are provided, and the workpiece fixtures are uniformly distributed circumferentially around the axis of the spindle turntable.

6. The counter-roller active power flexible spinning device for a large cylinder according to claim 1 , wherein an outer roller shaft is connected to each outer roller, and the output end of each third driver is connected to the outer roller shaft by a spline; a stop is connected to each fourth driver, and is fixed onto the outer pillar; an outer roller feeding screw is connected to the output ends of each fourth driver, an outer roller feeding nut is connected to the outer roller seat, and the outer roller feeding screw is in threaded connection with the outer roller feeding nut.

7. The counter-roller active power flexible spinning device for a large cylinder according to claim 1 , wherein an inner roller shaft is connected to each inner roller, and the output end of each fifth driver is connected to the inner roller shaft by a spline; an inner roller feeding worm is connected to the output end of each sixth driver, and one end, away from the sixth driver, of the inner roller feeding worm is rotatably connected to the inner roller disk; an inner roller feeding worm gear is further connected to the inner roller disk, the inner roller feeding worm gear is rotatably connected to the inner roller disk, an inner roller feeding nut is connected to the inner roller feeding worm gear, an inner roller feeding screw is connected to each inner roller seat, and the inner roller feeding screw is in threaded connection with the inner roller feeding nut.

8. The counter-roller active power flexible spinning device for a large cylinder according to claim 1 , wherein the rack unit further comprises an upper connecting beam and a lower connecting beam, the outer pillars are connected to the base by using the lower connecting beam, and adjacent outer pillars are connected by using the upper connecting beam; the inner pillars pass through the inner roller disk and then are fixed by fastening nuts, and the rack unit is of a cage structure.

9. The counter-roller active power flexible spinning device for a large cylinder according to claim 1 , further comprising balance units, wherein each of the balance units comprises a pulley block, a steel cable and a balance weight; the pulley block is arranged on the outer pillar, one end of the steel cable is connected to the spindle platform, and the other end of the steel cable is connected to the balance weight by bypassing the pulley block.

10. The counter-roller active power flexible spinning device f

Assignees

• Univ Xi An Jiaotong

Inventors

• Zhao Shengdun
• Li Fan
• Shen Yuxing
• Yang Ruigeng
• Xu Hongzhong
• Liu Baiyang

Classifications

• B21D37/10

  Die sets; Pillar guides · CPC title

• B21D22/18 Primary

  using tools guided to produce the required profile · CPC title

• B21D22/14 Primary

  Spinning · CPC title