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Inner support expansion fixture and cutting technology of ultra-thin wall large-scale cylinder type cutting workpiece

A technology of large-scale cylinder and expansion fixture, which is applied in the direction of expanding the mandrel, etc., which can solve the problem that the cutting accuracy cannot be guaranteed.

Active Publication Date: 2015-09-16
NINGBO HONGTENG ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the cutting workpiece is an ultra-thin-walled (D / δ=100-200) large-scale cylindrical cutting workpiece that is very sensitive to vibration, cutting force and fluctuation, cutting temperature, and clamping method, the existing internal Supporting the expansion fixture cannot guarantee the cutting accuracy requirements

Method used

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  • Inner support expansion fixture and cutting technology of ultra-thin wall large-scale cylinder type cutting workpiece
  • Inner support expansion fixture and cutting technology of ultra-thin wall large-scale cylinder type cutting workpiece
  • Inner support expansion fixture and cutting technology of ultra-thin wall large-scale cylinder type cutting workpiece

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Experimental program
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Effect test

Embodiment 1

[0028] Such as Figure 1-3 As shown, an inner support expansion fixture for an ultra-thin-walled large-scale cylindrical cutting workpiece provided in this embodiment, the specification size of the ultra-thin-walled large-scale cylindrical cutting workpiece is D / δ=1681.2 / 6.4= 262.69, the above-mentioned internal support expansion fixture includes:

[0029] The central axis 1, the length of the central axis 1 is slightly longer than the length of the above-mentioned ultra-thin-walled large cylindrical cutting workpiece, generally 200-300mm longer than the part;

[0030] The dial wheels 2 on both sides of the central shaft 1 are independently movable and socketed, and the cam plate 3 and the central shaft end plate are fastened with bolts, and the dial wheel 2 and the cam plate 3 on one side of the shaft end are in the same position. The limit is fixed in the direction of the central axis 1 axis;

[0031] Twenty-eight idler rollers 4 are evenly distributed in a circular shape ...

Embodiment 2

[0037] The internal support expansion fixture of an ultra-thin-walled large-scale cylindrical cutting workpiece provided in this embodiment has a general structure consistent with that of Embodiment 1, as shown in Figure 4 As shown, however, in this embodiment, two ratchets 13 are fixedly sleeved on the central shaft 1, and the curvature of the tooth surface of each ratchet 13 is consistent with the curvature of the middle portion of the first elongated hole 6, And it is in contact with the roller surface of each supporting roller 4 all the time.

[0038] The above-mentioned ratchet 13 added on the central shaft 1 can further increase the radial support force of the central shaft 1 to a plurality of idlers 4 (the middle part in the axial direction), and improve the overall structural stability of the inner support expansion clamp .

Embodiment 3

[0040] The internal support expansion fixture of an ultra-thin-walled large-scale cylindrical cutting workpiece provided in this embodiment has a general structure consistent with that of Embodiment 1, as shown in Figure 5 As shown, however, the drive mechanism described in the present embodiment includes: a pair of dials 2 are added dial threaded rods 14, each dial threaded rod 14 is screwed with a locking sleeve 15, The second elongated hole 10 provided in the horizontal direction on the cam plate 3 corresponding to each dial threaded rod 14, wherein each of the above-mentioned dial threaded rods 14 all passes through its corresponding second elongated hole 10, and the lock The tight sleeves 15 are all positioned at the outside of the cam plate 3, and the position is limited by tightening the locking sleeves 15 after the dial wheel threaded rod 14 has adjusted the position of the dial wheel 2 .

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Abstract

The invention discloses an inner support expansion fixture of an ultra-thin wall large-scale cylinder type cut workpiece. The inner support expansion fixture of the ultra-thin wall large-scale cylinder type cut workpiece comprises a center shaft, poking wheels and cam plates on the shaft ends of the two sides of the center shaft, a plurality of supporting rollers distributed between a pair of the cam plates in a ring mode and a plurality of elastic rubber rings on each supporting roller, wherein a plurality of first long-strip holes are distributed on the cam plates in a ring arrayed mode in the peripheral direction, the first long-strip holes are symmetrical with one another on a pair of the cam plates, the roller shaft end of each supporting roller extends into the corresponding first long-strip hole, notches are distributed on the peripheral face of each poking wheel in a ring mode, the notches on a pair of the poking wheels are symmetrical, the end portion of the roller shaft of each supporting roller is clamped into the notch corresponding to the supporting roller, and the poking wheels are further provided with driving mechanisms driving the poking wheels to perform rotating movement around the center axes of the center shafts and capable of achieving self-locking. The inner support expansion fixture of the ultra-thin wall large-scale cylinder type cut workpiece solves the technical problem that the cutting machine precision of the ultra-thin wall large-scale cylinder type cut workpiece is improved, and the quality of the ultra-thin wall large-scale cylinder type cut workpiece is improved.

Description

technical field [0001] The invention relates to an inner support expansion fixture and a cutting process for a cylindrical cutting workpiece, in particular to an inner support expansion fixture and a cutting process for an ultra-thin-walled large cylindrical cutting workpiece. Background technique [0002] In the field of mechanical processing, manufacture low-rigidity, high-precision, thin-walled (D / δ=50~100, where D is the diameter of the inner circle, δ is the wall thickness) large cylindrical cutting workpieces (whether the material is ferrous metal or non-ferrous metal) Metal) are extremely difficult, especially the cylinder blank formed by tailor welding of plates and forming rolls. The reason is that in the process of rolling the cylinder blank, the residual internal stress formed by the plastic deformation of the material (the inner and outer layer materials are compressed and stretched respectively, the inner layer of the material has residual compressive stress, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B31/40B23P15/00
CPCB23B31/40B23P15/00
Inventor 王祖义
Owner NINGBO HONGTENG ELECTROMECHANICAL
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