Pipe no-chip cutting device
Technical field
The present invention relates to the tubing cutter sweep, refer more particularly to pipe no-chip cutting device.
Background technology
Present pipe no-chip cutting device mainly contains hobboing cutter cutter sweep and blanking units, compares with traditional saw blade cutter sweep, and it is high and do not have an advantage such as chip generation to have machining accuracy.But through three pipe fittings that the hobboing cutter cutting obtains in the hobboing cutter cutter sweep, the phenomenon of receiving in its otch has after need revising its pipe end, can be used for next process; And the pipe fitting that obtains through blanking units cutting, in die-cut direction distortion, and the mouth of pipe is not the circumference contraction, after also needing its pipe end revised, just can be used for next process.Like this, just make the working (machining) efficiency of whole pipe fitting reduce greatly, and the cutting speed of above-mentioned two kinds of devices is also slower; And when cutting for short tube, the axial dimension precision of pipe fitting is difficult to be guaranteed.
Summary of the invention
Technical problem to be solved by this invention is: a kind of pipe no-chip cutting device that makes fitting to fitting after the cutting be used for next procedure is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is: pipe no-chip cutting device, comprise: holder, be provided with in the holder and decide blanking punch, one side of holder is provided with the revolution overcoat, be movably set with inside and outside eccentric revolving sleeve in the revolution overcoat, be movably set with inside and outside eccentric outer mould base in the fixed cover, be provided with the spline pin between outer mould base and the holder, be provided with in the outer mould base and decide the moving blanking punch that blanking punch matches, fixed, be equipped with plug in the moving blanking punch, plug is with fixed, be provided with the gap between the moving blanking punch, the active segment of plug is arranged in moving blanking punch, and the canned paragraph of plug is arranged in decides blanking punch.
The concrete structure of described plug comprises: the fixed cover and the movable sleeve that is positioned at active segment that are positioned at canned paragraph, end near fixed cover in the movable sleeve is provided with reseting sleeve, the other end in the movable sleeve is provided with stage clip, be equipped with guide blot in the fixed cover, guide blot passes reseting sleeve and is connected with adjusting nut with stage clip, the two ends of stage clip are pressed on an end of adjusting nut and reseting sleeve respectively, the other end of reseting sleeve is provided with tapered guide surface, one end of fixed cover is provided with the conical pilot hole that matches with the tapered guide surface of reseting sleeve, and the tapered guide surface of reseting sleeve abuts on the hole wall of conical pilot hole of fixed cover.
Described guide blot also is provided with spigot nut in the outside of adjusting nut.
Described revolving sleeve equates with the offset of outer mould base.
The invention has the beneficial effects as follows: through the pipe fitting that the present invention's cutting obtains, its mouth of pipe does not have burr, does not have distortion, does not have and shrink, and can be directly used in next procedure, thereby improve the working (machining) efficiency of whole pipe fitting; And cutting speed has also had the raising of suitable amplitude; Especially for the short tube cutting, can guarantee the axial dimension precision of pipe fitting well.
Description of drawings
Fig. 1 is the perspective view of biopsy cavity marker devices of the present invention.
Fig. 2 is the longitudinally cutting structural representation of fixed among Fig. 1, moving blanking punch and plug.
Fig. 3 is the structural representation that revolving sleeve among Fig. 1, outer mould base and moving blanking punch are in initial position.
Fig. 4 is the structural representation that revolving sleeve among Fig. 1, outer mould base and moving blanking punch are in the maximum eccentric position.
Fig. 5 is active segment relationship change schematic diagram in mutual alignment in cutting process of blanking punch and plug.
Fig. 6 is canned paragraph relationship change schematic diagram in mutual alignment in cutting process of deciding blanking punch and plug.
Among Fig. 1 to Fig. 6: 1, holder, 2, trim ring, 3, plug, 31, fixed cover, 32, movable sleeve, 33, guide blot, 34, reseting sleeve, 35, stage clip, 36, adjusting nut, 37, spigot nut, 4, decide blanking punch, 5, trim ring, 6, revolution overcoat, 7, outer mould base, 8, revolving sleeve, 9, trim ring, 10, moving blanking punch, 11, set bolt, 12, the spline pin, 13, Connection Block, 14, positioner, 15, incision site, 16, trim ring.
The specific embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present invention in detail.
As shown in Figure 1, pipe no-chip cutting device of the present invention, comprise: holder 1, be fixed with trim ring 2 in the holder 1 and decide blanking punch 4, trim ring 2 is fixed on the holder 1 by set bolt 11, one side of holder 1 is provided with revolution overcoat 6, be movably set with inside and outside eccentric revolving sleeve 8 by trim ring 9 in the revolution overcoat 6, trim ring 9 is fixed on the revolution overcoat 6 by set bolt 11, in the revolving sleeve 8 by pressing 7 circles 5 to be movably set with inside and outside eccentric outer mould base 7, trim ring 5 is fixed on the holder 1 by set bolt 11, and revolving sleeve 8 equates that with the offset of outer mould base 7 its value must be greater than the gap sum between tube wall thickness and all parts; Be provided with spline pin 12 between outer mould base 7 and the holder 1, be provided with by trim ring 16 in the outer mould base 7 and decide the moving blanking punch 10 that blanking punch 4 matches, trim ring 16 is fixed on the outer mould base 7 by set bolt 11, fixed, be equipped with plug 3 in the moving blanking punch 4 and 10, as shown in Figure 2, its concrete structure comprises: the fixed cover 31 and the movable sleeve 32 that is positioned at active segment that are positioned at canned paragraph, end near fixed cover 31 in the movable sleeve 32 is provided with reseting sleeve 34, the other end in the movable sleeve 32 is provided with stage clip 35, be equipped with guide blot 33 in the fixed cover 31, guide blot 33 passes reseting sleeve 34 and is connected with adjusting nut 36 with stage clip 35, the two ends of stage clip 35 are pressed on an end of adjusting nut 36 and reseting sleeve 34 respectively, the other end of reseting sleeve 34 is provided with tapered guide surface, one end of fixed cover 31 is provided with the conical pilot hole that matches with the tapered guide surface of reseting sleeve 34, and the tapered guide surface of reseting sleeve 34 abuts on the hole wall of conical pilot hole of fixed cover 31; In the present embodiment, for convenience of suit tubing, guide blot 33 also is provided with spigot nut 37 in the outside of adjusting nut 36; Be the fixed cover 31 of plug 3 between plug 3 and fixed, the moving blanking punch 4 and 10 with decide between the blanking punch 4 and the movable sleeve 32 of plug 3 and moving blanking punch 10 between be provided with the gap of placement tubing, this gap is more bigger than the wall thickness of tubing, is beneficial to poling; The fixed cover 31 of plug 3 and the boundary of movable sleeve 32 are the incision site 15 of tubing.
During use, to be in initial position be outer mould base 7 with revolving sleeve 8 when concentric at outer mould base 7 and revolving sleeve 8---referring to shown in Figure 3, the plug 3 that is set with tubing is fixed on the positioner 14 by Connection Block 13, make the fixed cover 31 of plug 3 overlap with the branch mould place of fixed, moving blanking punch 4 and 10 with the boundary of movable sleeve 32, at this moment, the fixed cover 31 of plug 3 and movable sleeve 32 are also concentric; Drive revolving sleeve 8 rotations by power set then and do the complete cycle gyration, and outer mould base 7 because and be provided with spline pin 12 between the holder 1, therefore, outer mould base 7 can only be done the off-centre twisting of complete cycle, maximum cutting quantity is the offset sum of outer mould base 7 and revolving sleeve 8---referring to shown in Figure 4, meanwhile, the active segment of plug 3 is under the acting in conjunction of moving blanking punch 10 and stage clip 35, force reseting sleeve 34 to do the axial translation motion, make movable sleeve 32 follow moving blanking punch 10 and do the circumference changing of the relative positions, thereby the side that feasible left side of deciding the incision site 15 of 4 pairs of tubing of blanking punch promptly is sleeved on the movable sleeve 32 is sheared---referring to shown in Figure 6, the side that the right side of the incision site 15 of moving 10 pairs of tubing of blanking punch promptly is sleeved on the fixed cover 31 is sheared---referring to shown in Figure 5, whole cutting quantity from zero to greatly, and begin to cut at circumference from a bit, cutting speed is very fast, but also guaranteed that tubing is stressed even on circumference, can not be out of shape; Do not have chip, no burr in whole cutting process, cut quality is guaranteed, and the pipe fitting after the cutting need not to carry out the end face correction, just can be directly used in next procedure.