CN104028854B - The externally threaded machinery of a kind of processing slim composite - Google Patents
The externally threaded machinery of a kind of processing slim composite Download PDFInfo
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- CN104028854B CN104028854B CN201410268092.1A CN201410268092A CN104028854B CN 104028854 B CN104028854 B CN 104028854B CN 201410268092 A CN201410268092 A CN 201410268092A CN 104028854 B CN104028854 B CN 104028854B
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Abstract
The present invention relates to the externally threaded machinery of a kind of processing slim composite, comprise engine lathe, transverse feed mechanism, follow-rest and add long guideway and actuating unit, transverse feed mechanism comprises stand, electro spindle and diamond milling cutter; Follow-rest comprises work mounting s cover, screw thread splicing sleeve; Add long guideway and actuating unit to comprise and add long guideway, variable-frequency motor and scroll chuck.The external screw thread of processing slim composite of the present invention divides two work steps: 1, utilize the cutting thread driving-chain of engine lathe and the diamond milling cutter of High Rotation Speed, complete the external screw thread milling of composite leading portion; 2, the externally threaded termination of composite leading portion is clamped by the scroll chuck added in long guideway and actuating unit, start the circular motion that variable-frequency motor realizes work piece, determined the helical pitch of screw thread by screw thread splicing sleeve, processed by the total length external screw thread of diamond milling cutter to elongate composite of High Rotation Speed.
Description
Technical field
The present invention relates to a kind of machinery of threading, particularly relate to the externally threaded machinery of a kind of processing slim composite, belong to plant equipment design and manufacturing technology field.
Background technology
By the solid material of material after Prof. Du Yucang of two or more different physics, chemical property, be called composite.Due to these materials there is very high specific strength and specific stiffness, anti-fatigue performance is good, job security is excellent, electrical insulating property and excellent, the extremely low thermal conductivity factor of chemical inertness, good anti-attrition anti-wear performance and shock-absorbing and acoustic attenuation performance, be therefore used widely in space flight, aviation, boats and ships, automobile, chemical industry, electronics, electrical apparatus industry.But the machinability of these materials is usually poor, such as: during machining composite material fiberglass, its hardness and intensity are very high, glass tissue filler is difficult to cut, cutter is worn very soon and loses cutting power, and slowly can only be carried out by micro cutting, simultaneously, because its thermal conductivity factor is little, heat resistance only has 100 DEG C ~ 250 DEG C, under cutting force effect and after cutter blunt, thermal coefficient of expansion is very big, be generally 3 ~ 4 times of metal, therefore, the less stable of size, and when cutter is large to its squeezing action power, very easily produce cracking, collapse limit and fall slag, during the thermosetting plasticses such as processing phenolic aldehyde, epoxy, amino, because its heat resistance is higher than thermoplastic, and the plastic strength had (plastics of fiberglass substrate) is close to metal, strong abrasive wear is formed when turning, thermosetting plastics intensity is large, hardness is high, thermal conductivity is extremely low, the temperature of cutting region can reach 600 DEG C, tool life obviously declines, tissue, hardness, intensity are uneven, resilience is strong, and dimensional accuracy is wayward, organizes extremely uneven, particularly laminated plastic is even more serious, fragility cracking during cutting, when machining SiO2 content reaches the vagcor steel of more than 90%, wherein Hard Inclusion has the character of grinding, makes tool wear serious, workpiece aliquation, falls slag, and dust is serious, and there is the phenomenon that resin burns because cutting temperature is high simultaneously.Described on crowd, the machining difficulty of composite is that aobvious face is easily seen, and goes out the elongated external screw thread of diameter 8mm, long 3M with this materials processing, just more extremely difficult.At present, the above-mentioned elongated externally threaded unique method of domestic processing is: the method adopting engine lathe to move processing by micro cutting, multitool feeding, segmentation realizes, and not only operating efficiency is extremely low and occur screw thread to grind one's teeth and front and back divergence defect for it.Therefore design the externally threaded special-purpose machinery of a kind of processing slim composite, there is very high economic worth.
Summary of the invention
For the present situation of current domestic processing slim composite external screw thread difficulty, the present invention proposes the externally threaded machinery of a kind of processing slim composite, so as to filling the domestic gaps.
The present invention is achieved through the following technical solutions: the externally threaded machinery of a kind of processing slim composite, comprises engine lathe, transverse feed mechanism, follow-rest and add long guideway and actuating unit, and described engine lathe removes the knife rest of holding cutter; Described transverse feed mechanism comprises stand, electro spindle and diamond milling cutter, and diamond milling pin cutter is provided with the milling pin conical surface that cone angle is form of thread angle, and this cutter is clamped in the output shaft end of electro spindle, and coaxial with the axis of rotation of electro spindle; Described follow-rest is made up of stand, work mounting s cover, screw thread splicing sleeve, spring and trip bolt; Described add long guideway and actuating unit by adding long guideway, slip slide carriage, variable-frequency motor, scroll chuck form, it is characterized in that:
Stand in described transverse feed mechanism is fixed on the knife rest slide carriage of lathe;
Described electro spindle is fixed in stand with the form of intersect vertical axis in lathe spindle axis, and can do in-movement along the vertical direction of lathe spindle axis;
The stand of described follow-rest is fixed on the knife rest slide carriage of lathe, and it is positioned at the below of diamond milling cutter, and in the middle part of stand, be provided with one can for diamond milling cutter to the recessed space of lathe axis of rotation feeding;
Be provided with one in described work mounting s cover and form the longitudinal hole of matched in clearance with workpiece external diameter, a screwed hole spun with workpiece screw thread is provided with in described screw thread splicing sleeve, work mounting s cover and screw thread splicing sleeve according to from left to right sequentially successively separated by gap be engaged in the hole in stand, and both axis are all coaxial with the axis of rotation of lathe, wherein work mounting s cover when after lengthwise position is determined by the fastening location of the trip bolt on stand, wherein screw thread splicing sleeve, can vertically move along the axis of rotation of lathe, and when after workpiece is threaded into by the fastening location of the trip bolt on stand,
Described work mounting s is enclosed within relative position that follow-rest stand is equipped with recessed space and is also provided with a recessed plane, and the vertical range of this plane and lathe axis of rotation is less than the radius of its internal longitudinal bore and is greater than zero;
Described spring is arranged between screw thread splicing sleeve and stand, and elastic force points to the headstock direction of lathe;
The external diameter of described screw thread splicing sleeve is provided with key vertically, is provided with the keyway matched with key in follow-rest stand, and both coordinate restriction screw thread splicing sleeve to rotate about the axis;
The screw thread arrival end of described screw thread splicing sleeve is provided with the little centering taper hole of outer imperial palace, screws in facilitate the centering of workpiece screw thread;
The described long guideway that adds is arranged on the prolongation track of lathe longitudinal rail;
Described slip slide carriage can do longitudinal freely-movable along adding long guideway;
Described variable-frequency motor is fixed on slip slide carriage, and its output shaft end is fixedly connected with scroll chuck;
Described scroll chuck axis of rotation is coaxial with the axis of rotation of lathe.
The external screw thread of processing slim composite of the present invention divides two work steps:
One work step: elongate composite workpiece passes from lathe main axis hole, and workpiece one end is entered in knife rest longitudinal hole form hole to support the centering of workpiece; The length feed motion of the circular motion of lathe three-claw chuck and cutting thread driving-chain and electro spindle is utilized to drive the high speed rotary motion of diamond milling cutter, complete the external screw thread milling of composite leading portion, and leading portion external screw thread is screwed out in screw thread splicing sleeve, then binding thread splicing sleeve;
Two work steps: stop lathe spindle rotating, unclamp lathe three-claw chuck, the externally threaded termination of composite leading portion is clamped by the scroll chuck added in long guideway and actuating unit, start the circular motion that variable-frequency motor realizes work piece, the helical pitch of screw thread is determined by screw thread splicing sleeve, start electro spindle High Rotation Speed and realize the cutting movement of diamond milling cutter to workpiece, thus complete the total length external screw thread processing of elongate composite.
The present invention can process diameter 8mm, reach the external screw thread of 3M elongate composite, solving engine lathe cannot the externally threaded difficult problem of processing slim composite, thus there is modern design, principle be distinct, rational in infrastructure, machining screw is smooth, advantage that operating efficiency is high, filled up domestic blank.
Accompanying drawing explanation
Fig. 1 is that the master under the present invention one work step state looks, broken section structural representation;
Fig. 2 is A-A cross section structural representation in Fig. 1;
Fig. 3 is that in Fig. 1, I part-structure shifts out enlarged drawing;
Fig. 4 is B-B cross section structural representation in Fig. 3;
Fig. 5 is C-C cross section structural representation in Fig. 3;
Fig. 6 is that the master under the present invention two work step state looks, broken section structural representation.
In Fig. 1 ~ 6: 1 workpiece, 2 frequency converters, 3 engine lathes, 4 stands, 5 and 5 ' scroll chuck, 6 electro spindle, 7 whorl work pieces, 8 variable-frequency motors, 9 slip slide carriages, 10 add long guideway, 11 frames, 12 and 20 trip bolts, 13 diamond milling cutters, 14 work mounting s covers, 15 knife rest slide carriages, 16 saddles, 17 stands, 18 screw thread splicing sleeves, 19 springs, a centering taper hole, b keyway, c key.
Detailed description of the invention
Below in conjunction with accompanying drawing, also by following examples, the invention will be further described:
As shown in accompanying drawing 1,2,3,4,5, workpiece 1 is elongate composite; Engine lathe 3 removes the knife rest of holding cutter; Transverse feed mechanism comprises stand 4, electro spindle 6 and diamond milling cutter 13, and diamond milling cutter 13 is provided with the milling pin conical surface that cone angle is form of thread angle, and cutter is clamped in the output shaft end of electro spindle 6, and coaxial with the axis of rotation of electro spindle 6; Follow-rest is made up of stand 17, work mounting s cover 14, screw thread splicing sleeve 18, spring 19, trip bolt 12 and 20; Add long guideway and actuating unit by adding long guideway 10, slip slide carriage 9, scroll chuck 5 ', variable-frequency motor 8 form; Stand 4 in transverse feed mechanism is fixed on the knife rest slide carriage 15 of lathe; Electro spindle 6 to be fixed in stand 4 perpendicular to the form of lathe spindle axis, and can do in-movement along the vertical direction of lathe spindle axis; The stand 17 of follow-rest is fixed on the knife rest slide carriage 15 of lathe, and it is positioned at the below of diamond milling cutter 13, and in the middle part of stand 17, be provided with one can for diamond milling cutter 13 to the recessed space of lathe axis of rotation feeding; Be provided with one in work mounting s cover 14 and form the longitudinal hole of matched in clearance with workpiece 1 external diameter; A screwed hole identical with whorl work piece 7 thread parameter is provided with in screw thread splicing sleeve 18; Work mounting s cover 14 and screw thread splicing sleeve 18 according to from left to right order successively separated by gap be engaged in the hole of stand 17, and both axis are all coaxial with the axis of rotation of lathe, wherein work mounting s cover 14 when after lengthwise position is determined by the fastening location of trip bolt 12 on stand 17, wherein screw thread splicing sleeve 18, can vertically move along the axis of rotation of lathe, and when after whorl work piece 7 screws in by the fastening location of trip bolt 20 on stand 17; Work mounting s cover 14 is also provided with a recessed plane on the relative position that follow-rest stand 17 is equipped with recessed space, and the vertical range of this plane and lathe axis of rotation is less than the radius of its internal longitudinal bore and is greater than zero; Spring 19 is arranged between screw thread splicing sleeve 18 and stand 17, and elastic force points to the headstock direction of lathe; The external diameter of screw thread splicing sleeve 18 is provided with key c vertically, is provided with the keyway b matched with key c in follow-rest stand 17, and both coordinate restriction screw thread splicing sleeve 18 to rotate about the axis; The screw thread arrival end of screw thread splicing sleeve 18 is provided with the little centering taper hole a of outer imperial palace, screws in facilitate the centering of whorl work piece 7; The long guideway 10 that adds added in long guideway and actuating unit is arranged on the prolongation track of lathe longitudinal rail; Slip slide carriage 9 can do longitudinal freely-movable along adding long guideway 10; Variable-frequency motor 8 is fixed on slip slide carriage 9, and its output shaft end is fixedly connected with scroll chuck 5 ', and the axis of rotation of scroll chuck 5 ' is coaxial with the axis of rotation of lathe.
The external screw thread of processing slim composite of the present invention divides two work steps
One work step: as shown in Figure 1, extend into centering supporting the longitudinal hole in work mounting s cover 14 in the spindle hole of engine lathe 3 by workpiece 1; By lathe three-claw chuck 5 clamping work pieces 1, and its termination is made to be positioned at the below of diamond milling cutter 13; Externally threaded in length and breadth to relative position by the disposable milling workpiece 1 of knife rest slide carriage 15, saddle 16 and transverse feed mechanism adjustment diamond milling cutter 13; Start motor and the frequency converter 2 of engine lathe 3, the cutting thread driving-chain utilizing engine lathe 3 to have and electro spindle 6 drive diamond milling cutter 13 High Rotation Speed, complete the external screw thread milling of workpiece 1 leading portion, thus form whorl work piece 7, and make the leading portion external screw thread of whorl work piece 7 screw out outside screw thread splicing sleeve 18, then, by the trip bolt 20 binding thread splicing sleeve 18 on stand 17.In the process, because work mounting s cover 14 is provided with a recessed plane, and the vertical range of this plane and lathe axis of rotation is less than the radius of its internal longitudinal bore and is greater than zero, thus more than half cylinder of the longitudinal hole inclusion workpiece 1 in it is made, only make wherein very little semicolumn outside exposed, both met diamond milling cutter 13 carries out thread milling requirement to its surface, and made again the centering clathrate stable of workpiece 1, the screw thread form precision thus processed obtains and fully ensures, in the process, screw thread arrival end due to screw thread splicing sleeve 18 is provided with the little centering taper hole a of outer imperial palace, and screw thread splicing sleeve 18 can vertically move along key c with the direction that coordinates of keyway b in follow-rest stand 17, the spring 19 that elastic force points to the lathe headstock is also provided with between screw thread splicing sleeve 18 and follow-rest stand 17, thus the manufactured whorl work piece 7 termination smooth internal thread close to screw thread splicing sleeve 18 is impartially enable, and at screw thread splicing sleeve 18 can under the acting in conjunction of tolerant movement and spring 19 spring force, helical pitch is between the two made to overlap and screw in it, by the trip bolt 20 binding thread splicing sleeve 18 on stand 17 after screwing in, make screw thread splicing sleeve 18 can not length travel.
Two work steps: as shown in Figure 6, lathe spindle is stopped to rotate, unclamp lathe three-claw chuck 5, the externally threaded termination of whorl work piece 7 leading portion is clamped by the scroll chuck 5 ' added in long guideway and actuating unit, start the circular motion that variable-frequency motor 8 realizes workpiece 1, determined the helical pitch of screw thread by screw thread splicing sleeve 18, start the cutting movement that electro spindle 6 High Rotation Speed realizes diamond milling cutter 13 pairs of workpiece 1, thus complete the total length external screw thread processing of elongate composite.In the process, whorl work piece 7 follows setting helical pitch in retaining thread splicing sleeve 18 and under the drive of scroll chuck 5 ', do the resultant motion on circumference and axial direction, slip slide carriage 9, simultaneously in the resultant motion of whorl work piece 7, is done freely to follow action along adding on long guideway 10.
By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, many variations can also be made, such as: the stand in transverse feed mechanism and follow-rest also can directly be contained on the saddle of engine lathe to it; Screw thread splicing sleeve also directly can screw whorl work piece by staff, is then fixed on follow-rest, and equivalent effect conversion like this, all should be encompassed in technical scope of the present invention and so on.
Claims (6)
1. the externally threaded machinery of processing slim composite, comprises engine lathe, transverse feed mechanism, follow-rest and adds long guideway and actuating unit, and described engine lathe removes the knife rest of holding cutter; Described transverse feed mechanism comprises stand, electro spindle and diamond milling cutter, and diamond milling pin cutter is provided with the milling pin conical surface that cone angle is form of thread angle, and this cutter is clamped in the output shaft end of electro spindle, and coaxial with the axis of rotation of electro spindle; Described follow-rest is made up of stand, work mounting s cover, screw thread splicing sleeve, spring and trip bolt; Described add long guideway and actuating unit by adding long guideway, slip slide carriage, variable-frequency motor, scroll chuck form, it is characterized in that:
Stand in described transverse feed mechanism is fixed on the knife rest slide carriage of lathe;
Described electro spindle is fixed in stand with the form of intersect vertical axis in lathe spindle axis, and can do in-movement along the vertical direction of lathe spindle axis;
The stand of described follow-rest is fixed on the knife rest slide carriage of lathe, and it is positioned at the below of diamond milling cutter, and in the middle part of stand, be provided with one can for diamond milling cutter to the recessed space of lathe axis of rotation feeding;
Be provided with one in described work mounting s cover and form the longitudinal hole of matched in clearance with workpiece external diameter;
A screwed hole identical with workpiece thread parameter is provided with in described screw thread splicing sleeve;
Described work mounting s cover and screw thread splicing sleeve according to from left to right sequentially successively separated by gap be engaged in the hole in stand, and both axis are all coaxial with the axis of rotation of lathe, and wherein screw thread splicing sleeve can vertically move along the axis of rotation of lathe;
Described work mounting s is enclosed within relative position that follow-rest stand is equipped with recessed space and is also provided with a recessed plane, and the vertical range of this plane and lathe axis of rotation is less than the radius of its internal longitudinal bore and is greater than zero;
The described long guideway that adds is arranged on the prolongation track of lathe longitudinal rail;
Described slip slide carriage can do longitudinal freely-movable along adding long guideway;
Described variable-frequency motor is fixed on slip slide carriage, and its output shaft end is fixedly connected with scroll chuck;
Described scroll chuck axis of rotation is coaxial with the axis of rotation of lathe.
2. the externally threaded machinery of a kind of processing slim composite according to claim 1, is characterized in that described spring is arranged between screw thread splicing sleeve and stand, and elastic force points to the headstock direction of lathe.
3. the externally threaded machinery of a kind of processing slim composite according to claim 1, is characterized in that the external diameter of described screw thread splicing sleeve is provided with key vertically, is provided with the keyway matched with key in follow-rest stand.
4. the externally threaded machinery of a kind of processing slim composite according to claim 1, is characterized in that the screw thread arrival end of described screw thread splicing sleeve is provided with the little centering taper hole of outer imperial palace.
5. the externally threaded machinery of a kind of processing slim composite according to claim 1, it is characterized in that described work mounting s cover when after lengthwise position is determined by the fastening location of the trip bolt on stand.
6. the externally threaded machinery of a kind of processing slim composite according to claim 1, it is characterized in that described screw thread splicing sleeve when after workpiece is threaded into by the fastening location of the trip bolt on stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410268092.1A CN104028854B (en) | 2014-06-17 | 2014-06-17 | The externally threaded machinery of a kind of processing slim composite |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410268092.1A CN104028854B (en) | 2014-06-17 | 2014-06-17 | The externally threaded machinery of a kind of processing slim composite |
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| Publication Number | Publication Date |
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| CN104028854A CN104028854A (en) | 2014-09-10 |
| CN104028854B true CN104028854B (en) | 2016-04-27 |
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| CN201410268092.1A Active CN104028854B (en) | 2014-06-17 | 2014-06-17 | The externally threaded machinery of a kind of processing slim composite |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114192904A (en) * | 2022-01-25 | 2022-03-18 | 上海阿为特精密机械股份有限公司 | Innovative common lathe thread milling method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3557657A (en) * | 1968-11-01 | 1971-01-26 | Bror W Swanson | Thread-milling machine |
| US4034646A (en) * | 1974-06-26 | 1977-07-12 | Automatindustrier I Gavle Ab | Thread milling apparatus |
| JPS53165294U (en) * | 1977-05-31 | 1978-12-25 | ||
| CN2520981Y (en) * | 2001-09-05 | 2002-11-20 | 王晓燕 | Screw-thread mill |
| CN200957472Y (en) * | 2006-08-25 | 2007-10-10 | 郑州机械研究所 | Apparatus for machining random spiral angle screw or worm |
| CN203918138U (en) * | 2014-06-17 | 2014-11-05 | 盐城三森自动化设备有限公司 | The externally threaded machinery of a kind of processing slim composite |
-
2014
- 2014-06-17 CN CN201410268092.1A patent/CN104028854B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3557657A (en) * | 1968-11-01 | 1971-01-26 | Bror W Swanson | Thread-milling machine |
| US4034646A (en) * | 1974-06-26 | 1977-07-12 | Automatindustrier I Gavle Ab | Thread milling apparatus |
| JPS53165294U (en) * | 1977-05-31 | 1978-12-25 | ||
| CN2520981Y (en) * | 2001-09-05 | 2002-11-20 | 王晓燕 | Screw-thread mill |
| CN200957472Y (en) * | 2006-08-25 | 2007-10-10 | 郑州机械研究所 | Apparatus for machining random spiral angle screw or worm |
| CN203918138U (en) * | 2014-06-17 | 2014-11-05 | 盐城三森自动化设备有限公司 | The externally threaded machinery of a kind of processing slim composite |
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