CN105127517A - Embedded shut-off mechanism and embedded shut-off process - Google Patents

Embedded shut-off mechanism and embedded shut-off process Download PDF

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Publication number
CN105127517A
CN105127517A CN201510650771.XA CN201510650771A CN105127517A CN 105127517 A CN105127517 A CN 105127517A CN 201510650771 A CN201510650771 A CN 201510650771A CN 105127517 A CN105127517 A CN 105127517A
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CN
China
Prior art keywords
connecting axle
workpiece
eccentric shaft
shut
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510650771.XA
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Chinese (zh)
Inventor
肖世军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongshan Teke Precision Machine Co Ltd
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Zhongshan Teke Precision Machine Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Zhongshan Teke Precision Machine Co Ltd filed Critical Zhongshan Teke Precision Machine Co Ltd
Priority to CN201510650771.XA priority Critical patent/CN105127517A/en
Publication of CN105127517A publication Critical patent/CN105127517A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an embedded shut-off mechanism. The mechanism comprises a drive motor, an eccentric shaft device and a shut-off device, wherein the eccentric shaft device comprises a power shaft and an eccentric device fixed at one end of the power shaft; the power shaft and the drive motor are connected by a transmission device; the eccentric device is provided with an eccentric shaft; an interval is reserved between the axis of the eccentric shaft and the axis of the power shaft, and is equivalent to the thickness of a workpiece to be processed by the embedded shut-off mechanism, so that the workpiece can be shut off; the shut-off device comprises a knife rest and an inside cutter which is arranged on the knife rest; the knife rest is connected with the eccentric shaft by virtue of a bearing; and the outer part of the workpiece is sleeved by the inside cutter. The embedded shut-off mechanism has the advantages of high processing efficiency and small occupied space, and can be used for meeting the requirement for intensive and miniature production. The invention further provides an embedded shut-off process.

Description

Internal shut-off mechanism and a kind of internal Cutting process
Technical field
The present invention relates to machinery processing apparatus, particularly internal shut-off mechanism and a kind of internal Cutting process.
Background technology
In general tubular workpiece processing operation, in order to the needs in workpiece design, impose except the bending machining step of the alterations of form such as bend pipe except comprising to the specific position of workpiece, still comprise the cutting step that carries out of length according to workpiece design, the bend pipe step that can be incorporated into described cutting step continues and carries out, also after workpiece bows processing, then the step of cutting can be imposed.
Two kinds of modes are generally had at present to the cut-out of tubular workpiece; One is use saw blade to cut off, and two is use rotating knife as shown in Figure 1 to cut off.The mode wherein directly using saw blade to cut off is comparatively original, and also can produce a large amount of heats and chip in cutting process, and machining accuracy is lower, is unfavorable for processing comparatively accurate product component.As shown in Figure 1, rotating knife forms primarily of three the cutter pawls 22 be arranged on rotating seat and the outside cutting knife 221 be arranged on cutter pawl 22.Adding man-hour, cutter pawl 22 first drives outside cutting knife 221 to clamp pipe fitting, and then rotating seat band moving knife pawl 22 and outside cutting knife 221 rotate, thus key are cut off.The mode machining accuracy that rotating knife cuts off is high, can not produce chip and heat, apply more and more extensive in machining tool.
But the mode that existing rotating knife cuts off also has following deficiency:
(1), working (machining) efficiency is low, and a rotating knife once could process a pipe fitting;
(2), take up room greatly, due to rotating seat at least will install three cutter pawls, volume is larger thus.
Based on above-mentioned deficiency, the mode that existing rotating knife cuts off can not meet intensive and miniaturized production requirement.
Summary of the invention
An object of the present invention is to provide a kind of internal shut-off mechanism.Another object of the present invention is to provide a kind of internal Cutting process.
According to an aspect of the present invention, provide a kind of internal shut-off mechanism, comprising:
Drive motors;
Eccentric shaft, comprise a line shaft and be fixed on the eccentric of line shaft one end, line shaft is connected by a set of transmission device with drive motors, eccentric has an eccentric shaft, have a segment distance between the axle center of eccentric shaft and the axle center of line shaft, the thickness of the workpiece that distance is processed with this internal shut-off mechanism is quite to guarantee to ensure to cut off workpiece;
Shearing device, comprise knife rest and be arranged on the inner edge cutting knife on knife rest, knife rest is connected with eccentric shaft by bearing, and inner edge cutter sleeve is located at outer workpiece.
Transmission device is belt, chain or gear.
Adopt the internal shut-off mechanism of above technical scheme, when drive motors drives line shaft to rotate by transmission device, line shaft rotation followed by the eccentric being fixed on line shaft one end, eccentric shaft moving mechanical axis axle center moves in a circle, knife rest is followed eccentric shaft and is moved in a circle, the inner edge cutting knife being sheathed on outer workpiece thus moves in a circle along workpiece outer wall, thus at workpiece outer wall fluting or cut-out workpiece.
In some embodiments, eccentric shaft comprises the first connecting axle and the second connecting axle, and the first connecting axle is fixedly connected with line shaft, and eccentric shaft is located on the second connecting axle, and the first connecting axle is connected by incline device with the second connecting axle.By the distance regulating the relative position between the first connecting axle and the second connecting axle to come between the axle center of eccentric adjustment axle and the axle center of line shaft, and then the shearing dynamics of joint inner edge cutting knife can be regulated thus.
In some embodiments, incline device comprises is located at the inclined hole crossing with the axle center of line shaft on one of them of the first connecting axle and the second connecting axle or skewed slot, and be located at slide block wherein on another of the first connecting axle and the second connecting axle or slide bar, slide block or slide bar and inclined hole or skewed slot match and move in inclined hole or skewed slot.Relative position thus between the first connecting axle and the second connecting axle is convenient to regulate more.
In some embodiments, slide block is identical with the angle of inclination of inclined hole or skewed slot.Can ensure that eccentric shaft remains original angle in the process regulated thus, make the transmission between eccentric shaft and knife rest more smooth and easy.
In some embodiments, also comprise connector, connector is connected with the second connecting axle by bearing, and connector is also provided with translating rails and advance and retreat drive unit, advance and retreat drive unit drives connector to move along translating rails, and then the second connecting axle is moved along incline device.Inner edge cutting knife can be made thus periodically to cut workpiece, thus the frictional force between workpiece and inner edge cutting knife can be reduced, improve cutting efficiency, and inner edge cutting knife can be protected, extend its service life.
In some embodiments, translating rails comprises slide block and slide rail, and advance and retreat drive unit comprises advance and retreat motor and feed tooth bar, and the motor shaft of advance and retreat motor is provided with the feed gear corresponding with feed tooth bar, connector is fixedly connected with slide block, and feed tooth bar is fixedly connected with connector.Advance and retreat drive unit can also be cylinder, oil cylinder or electric push rod.The structure that translating rails can also match for sleeve structure or chute and slide block.
In some embodiments, also comprise immovable support, immovable support is near shearing device and setting in parallel, and immovable support is provided with the through hole that run through corresponding with the position of inner edge cutting knife, and the shape of through hole is corresponding with the shape of workpiece.Workpiece can better be fixed by through hole, strengthens the shearing force of inner edge cutting knife, thus makes the efficiency of inner edge cutting knife higher.
Internal shut-off mechanism provided by the invention has following beneficial effect:
(1), working (machining) efficiency is high, and a knife rest with the multiple inner edge cutting knife of fashionable dress, thus can process multiple pipe fitting simultaneously;
(2), take up room little, because inner edge cutting knife is arranged on knife rest inside, without the need to additional space, small volume thus.
This internal shut-off mechanism can meet intensive and miniaturized production requirement.
According to another aspect of the present invention, provide a kind of internal Cutting process, use eccentric shaft to drive inner edge cutting knife to move in a circle along workpiece outer wall, thus at workpiece outer wall fluting or cut-out workpiece.
In some embodiments, eccentric shaft is any one above-mentioned eccentric shaft.
Accompanying drawing explanation
Fig. 1 is the structural representation of the rotating knife in existing shut-off mechanism.
Fig. 2 is the structural representation of the internal shut-off mechanism of one embodiment of the present invention.
Fig. 3 is the installation diagram of the shut-off mechanism of internal shown in Fig. 2.
Fig. 4 is the installation diagram of shearing device shown in Fig. 3.
Fig. 5 is the profile of eccentric shaft shown in Fig. 3.
Fig. 6 is the installation diagram of the first connecting axle and the second connecting axle shown in Fig. 5.
Fig. 7 is the installation diagram of the drive unit of advance and retreat shown in Fig. 3.
Fig. 8 is the structural representation of the internal shut-off mechanism of another embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.
Embodiment 1
Fig. 2 to Fig. 7 show schematically show the internal shut-off mechanism according to one embodiment of the present invention.As shown in the figure, this device is arranged in frame 5, comprises drive motors 1, eccentric shaft 3 and shearing device 4.
Eccentric shaft 3 comprises line shaft 31, first connecting axle 32 and the second connecting axle 33.
Line shaft 31 is connected by a set of transmission device 2 with drive motors 1.
First connecting axle 32 is fixedly connected with line shaft 31.Second connecting axle 33 is provided with eccentric shaft 34.
Have a segment distance between the axle center of eccentric shaft 34 and the axle center of line shaft 31, the thickness of the workpiece that this distance is processed with this internal shut-off mechanism is quite to guarantee to ensure to cut off workpiece;
Six inner edge cutting knifes 42 that shearing device 4 comprises knife rest 41 and is arranged on knife rest 41.Knife rest 41 two ends are connected with two eccentric shafts 34 by bearing.Inner edge cutting knife 42 is sheathed on outer workpiece.
In the present embodiment, transmission device 2 is belt.In a further embodiment, transmission device 2 can also be chain or gear.
First connecting axle 32 is connected by incline device with the second connecting axle 33.By the distance regulating the relative position between the first connecting axle and the second connecting axle to come between the axle center of eccentric adjustment axle and the axle center of line shaft, and then the shearing dynamics of joint inner edge cutting knife can be regulated.
Incline device comprises the skewed slot 321 crossing with the axle center of line shaft 31 be located on the first connecting axle 32, and is located at the slide block 331 on the second connecting axle 33.Slide block 331 and skewed slot 321 match and move in skewed slot 321.
Slide block 331 is identical with the angle of inclination of skewed slot 321.Can ensure that eccentric shaft 34 remains original angle in the process regulated thus, make the transmission between eccentric shaft 34 and knife rest 41 more smooth and easy.
In some other embodiments, slide block can also be arranged on the first connecting axle, and corresponding skewed slot can be located on the second connecting axle.Incline device can also comprise inclined hole and slide bar, and inclined hole and slide bar can be located on the first connecting axle and the second connecting axle respectively.
This device also comprises connector 6.Connector 6 is connected with the second connecting axle 33 by bearing.
Connector 6 is also provided with translating rails 7 and advance and retreat drive unit.Advance and retreat drive unit drives connector 6 to move along translating rails 7, and then the second connecting axle 33 is moved along skewed slot 321.
Translating rails 7 comprises slide block 71 and slide rail 72.Connector 6 is fixedly connected with slide block 71.Slide rail 72 is fixed with frame 5.
Advance and retreat drive unit comprises advance and retreat motor 91 and feed tooth bar 8.Feed tooth bar 8 is fixedly connected with connector 6.
The motor shaft of advance and retreat motor 91 is provided with the feed gear 92 corresponding with feed tooth bar 8.
In other examples, advance and retreat drive unit can also be cylinder, oil cylinder or electric push rod.The structure that translating rails can also match for sleeve structure or chute and slide block.
Adopt the internal shut-off mechanism of above technical scheme, when drive motors 1 drives line shaft 31 to rotate by transmission device 2, the eccentric 34 being fixed on line shaft 31 one end is followed line shaft 31 and is rotated, eccentric shaft 34 moving mechanical axis 31 axle center moves in a circle, knife rest 4 is followed eccentric shaft 34 and is moved in a circle, the inner edge cutting knife 42 being sheathed on outer workpiece thus moves in a circle along workpiece outer wall, thus at workpiece outer wall fluting or cut-out workpiece.
Advance and retreat motor 91 can drive connector 6 to move in parallel along slide rail 72 by feed gear 92 and feed tooth bar 8, and then the second connecting axle 33 is moved along skewed slot 321.When advance and retreat motor 91 drives connector 6 to force the second connecting axle 33 outwards to move along skewed slot 321, the distance between the axle center of eccentric shaft 34 and the axle center of line shaft 31 strengthens, thus makes the enlarged diameter that knife rest 41 moves in a circle, and inner edge cutting knife 42 leaves workpiece.Otherwise when advance and retreat motor 91 drives connector 6 to force the second connecting axle 33 to move inward along skewed slot 321, inner edge cutting knife 42 pairs of workpiece carry out cutting work.Inner edge cutting knife 42 can be made thus periodically to cut workpiece, thus the frictional force between workpiece and inner edge cutting knife 42 can be reduced, improve cutting efficiency, and inner edge cutting knife 42 can be protected, extend its service life.
Internal shut-off mechanism working (machining) efficiency provided by the invention is high, can process six pipe fittings simultaneously; And it is little to take up room, intensive and miniaturized production requirement can be met.
Embodiment 2
Fig. 8 show schematically show the internal shut-off mechanism according to another embodiment of the invention.As shown in the figure, be with the difference of embodiment 1, also comprise immovable support 10.Immovable support 10 presses close to shearing device 4 and setting in parallel.Immovable support 10 is provided with the through hole 101 that run through corresponding with the position of inner edge cutting knife.The shape of through hole 101 is corresponding with the shape of workpiece.Workpiece can better be fixed by through hole 101.Adding man-hour, immovable support 10 maintains static, inner edge cutting knife carries out circular motion, formed between inner edge cutting knife and through hole 101 thus and misplace, not only can utilize the cutting force of inner edge cutting knife, the shearing between inner edge cutting knife and immovable support 10 can also be utilized, thus make the working (machining) efficiency of inner edge cutting knife higher, longer service life.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.

Claims (9)

1. internal shut-off mechanism, is characterized in that, comprising:
Drive motors;
Eccentric shaft, comprise a line shaft and be fixed on the eccentric of described line shaft one end, described line shaft is connected by a set of transmission device with described drive motors, described eccentric has an eccentric shaft, have a segment distance between the axle center of described eccentric shaft and the axle center of described line shaft, described distance can ensure to cut off workpiece;
Shearing device, comprise knife rest and be arranged on the inner edge cutting knife on described knife rest, described knife rest is connected with described eccentric shaft by bearing, and described inner edge cutter sleeve is located at outer workpiece.
2. internal shut-off mechanism according to claim 1, it is characterized in that, described eccentric shaft comprises the first connecting axle and the second connecting axle, described first connecting axle is fixedly connected with described line shaft, described eccentric shaft is located on described second connecting axle, and described first connecting axle is connected by incline device with the second connecting axle.
3. internal shut-off mechanism according to claim 2, it is characterized in that, described incline device comprises is located at the inclined hole crossing with the axle center of described line shaft on one of them of described first connecting axle and described second connecting axle or skewed slot, and be located at slide block wherein on another of described first connecting axle and described second connecting axle or slide bar, described slide block or slide bar and described inclined hole or described skewed slot match and move in described inclined hole or described skewed slot.
4. internal shut-off mechanism according to claim 3, is characterized in that, described slide block is identical with the angle of inclination of described inclined hole or described skewed slot.
5. the internal shut-off mechanism according to any one of claim 2 to 4, it is characterized in that, also comprise connector, described connector is connected with described second connecting axle by bearing, described connector is also provided with translating rails and advance and retreat drive unit, described advance and retreat drive unit drives described connector to move along described translating rails, and then described second connecting axle is moved along described incline device.
6. internal shut-off mechanism according to claim 5, it is characterized in that, described translating rails comprises slide block and slide rail, described advance and retreat drive unit comprises advance and retreat motor and feed tooth bar, the motor shaft of described advance and retreat motor is provided with the feed gear corresponding with described feed tooth bar, described connector is fixedly connected with described slide block, and described feed tooth bar is fixedly connected with described connector.
7. internal shut-off mechanism according to claim 1, it is characterized in that, also comprise immovable support, described immovable support is near described shearing device and setting in parallel, described immovable support is provided with the through hole that run through corresponding with the position of described inner edge cutting knife, and the shape of described through hole is corresponding with the shape of workpiece.
8. an internal Cutting process, is characterized in that, uses eccentric shaft to drive inner edge cutting knife to move in a circle along workpiece outer wall, thus at workpiece outer wall fluting or cut-out workpiece.
9. internal Cutting process according to claim 8, is characterized in that, described eccentric shaft is the eccentric shaft described in any one of Claims 1-4.
CN201510650771.XA 2015-10-09 2015-10-09 Embedded shut-off mechanism and embedded shut-off process Pending CN105127517A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105935882A (en) * 2016-01-15 2016-09-14 中山精达特克机械有限公司 Multifunctional combined small U-tube bending machine and operation method thereof
CN106541003A (en) * 2017-01-04 2017-03-29 中山精达特克机械有限公司 Comprehensive long short tube integrated pipe bending machine
CN106825734A (en) * 2017-02-16 2017-06-13 高佳 A kind of motor-driven plastics lined pipe rotary cutting apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3568488A (en) * 1968-11-25 1971-03-09 Burr Oak Tool & Gauge Method of cutting an elongated tube and apparatus therefor
US4467682A (en) * 1982-09-30 1984-08-28 Anvil Corporation Rotary tubing cutter
CN1408518A (en) * 2001-10-01 2003-04-09 伯尔奥克工具及量规公司 Device for cutting slender tube
CN2569956Y (en) * 2002-10-11 2003-09-03 沈阳大万机械制造有限公司 Digital controlled hydraulic pipe cutting machine tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3568488A (en) * 1968-11-25 1971-03-09 Burr Oak Tool & Gauge Method of cutting an elongated tube and apparatus therefor
US4467682A (en) * 1982-09-30 1984-08-28 Anvil Corporation Rotary tubing cutter
CN1408518A (en) * 2001-10-01 2003-04-09 伯尔奥克工具及量规公司 Device for cutting slender tube
CN2569956Y (en) * 2002-10-11 2003-09-03 沈阳大万机械制造有限公司 Digital controlled hydraulic pipe cutting machine tool

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105935882A (en) * 2016-01-15 2016-09-14 中山精达特克机械有限公司 Multifunctional combined small U-tube bending machine and operation method thereof
CN106541003A (en) * 2017-01-04 2017-03-29 中山精达特克机械有限公司 Comprehensive long short tube integrated pipe bending machine
CN106541003B (en) * 2017-01-04 2018-03-16 中山精达特克机械有限公司 Comprehensive long short tube integrated pipe bending machine
CN106825734A (en) * 2017-02-16 2017-06-13 高佳 A kind of motor-driven plastics lined pipe rotary cutting apparatus

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Application publication date: 20151209

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