CN1302895C - Low-speed rotary apparatus for machining cylindrical cam groove - Google Patents
Low-speed rotary apparatus for machining cylindrical cam groove Download PDFInfo
- Publication number
- CN1302895C CN1302895C CNB2004100653540A CN200410065354A CN1302895C CN 1302895 C CN1302895 C CN 1302895C CN B2004100653540 A CNB2004100653540 A CN B2004100653540A CN 200410065354 A CN200410065354 A CN 200410065354A CN 1302895 C CN1302895 C CN 1302895C
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- tailstock
- transmission case
- gear
- cylindrical cam
- worm
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Abstract
The present invention relates to a machinery clamp in machine tool accessories, particularly to a low speed rotation device for machining cylindrical cam grooves. The machinery clamp comprises a transmission case, a three-jaw chuck, a motor, a tailstock and a bottom plate, wherein a worm gear, a worm screw and a transmission gear are arranged in the transmission case, a spindle nose is provided with the three-jaw chuck, the worm gear is provided with a band brake mechanism, and both the transmission case and the tailstock are fixed on the bottom plate. The present invention has the advantages of simple structure, convenient use, high work efficiency and low cost; the machinery clamp the can be matched with a common numerical control milling machine or a common numerical control lathe, used for machining cylindrical cam grooves on workpieces, and modified by using the existing equipment of the enterprise; and parts machined by the machinery clamp have the advantages of good quality, high stability and high reliability.
Description
Technical field
The present invention relates to the frock clamp in a kind of machine tool accessories, particularly a kind of low-speed revolving device of processing column cam path, it can be used with the general NC lathe, and workpiece is carried out cylindrical cam groove processing.
Background technology
So-called cylindrical cam groove processing promptly is to carry out curved groove processing on cylindrical work piece.At present, cylindrical cam groove processing is a big difficult point of machining.Because when the Milling Process cylindrical cam groove, require milling cutter to rotate at a high speed and feeding cutting time, workpiece is length feed and low speed rotation on lathe.The workpiece low speed rotation is the problem that must solve in the cylindrical cam groove machining process.At present, generally speaking cylindrical cam groove be processed with two kinds of ways: the one, on plain-milling machine, process, the 2nd, on CNC milling machine, process.If on plain-milling machine the processing column cam path, at first, must make workpiece realize low speed rotation.Its method generally is at the power shaft end of the leading screw output of milling machine table and dividing head lodge wheel, makes the milling machine dividing head realize low speed rotation.Generally speaking, there are several sections curves will take change gear several times.Moreover, in process, need the cautious operation of veteran master craftsman and just can finish.Curved groove after machined is good also need manually be repaiied file just can reach requirement.Obviously, processing column cam path on general plain-milling machine, not only efficient is low, and workpiece quality also can not get guaranteeing.If on CNC milling machine, process, then must on the high-grade CNC milling machine of three four interlocks, just can carry out, general general NC lathe then can't be processed.Because have only the high-grade CNC milling machine of three four interlocks just to have the function of low speed rotation, the general NC milling machine then can't be realized the function of low speed rotation.Prices are rather stiff for high-grade, digitally controlled machine tools, for general medium-sized and small enterprises, also do not have such equipment.How utilizing enterprise's existing equipment, as general NC milling machine or centre numerically controlled lathe, carry out the processing of cylindrical cam groove, is the medium-sized and small enterprises urgent problems.
Summary of the invention
The objective of the invention is, a kind of low-speed revolving device of processing column cam path is provided.Can be directly and general NC milling machine or centre numerically controlled lathe be used, workpiece is carried out the Milling Process of cylindrical cam groove.
Technical solution of the present invention is, be provided with transmission case, scroll chuck, motor, tailstock and base plate, be provided with main shaft, power transmission shaft and a pair of worm and gear and a pair of travelling gear in the transmission case, worm gear, worm screw are located at respectively on main shaft and the power transmission shaft, and travelling gear is located at respectively on power transmission shaft and the motor shaft; Spindle nose is equipped with scroll chuck and places outside the transmission case casing; Motor is fixed in the outside of transmission case casing, and transmission case and tailstock all are fixed on the base plate; Be provided with top in the tailstock, be provided with intermediate pads between tailstock and the base plate, the bottom surface of tailstock is provided with groove, and the upper side of intermediate pads is provided with boss, groove on its tailstock matches with boss on the intermediate pads, is made it to fix by bolt between tailstock and the intermediate pads.
Worm gear is provided with band-type brake mechanism, and described band-type brake mechanism is made of brake ribbon, fixed block, adjusting screw(rod), nuts and bolt, and band-type brake mechanism is fixed on the casing.
Advantage of the present invention is, and is simple in structure, installs, easy to use, and cost is low.Can directly utilize the existing equipment of enterprise to reequip, make the general NC lathe can realize the Milling Process of cylindrical cam groove, and high efficiency, the part quality of being processed is good and reliable and stable.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the B-B cutaway view of Fig. 1.
Number in the figure: 1-three-phase hybrid stepping motor, 2-gear, 3-gear, 4-worm screw, 5-worm gear, the 6-main shaft, the 7-scroll chuck, the 8-workpiece, the 9-tailstock, 10-is top, the 11-fixed block, 12-adjusting screw(rod), 13-nut, 14-brake ribbon, 15-set bolt, the 16-fixed block, 17-taper roll bearing, 18-power transmission shaft, 19-taper roll bearing, the 20-transmission case, 21-intermediate pads, 22-base plate, 23-hex bolts, the 24-plain washer, 25-hexagon socket cap head screw, 26-hex bolts, 27-plain washer.
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing:
The embodiment of the invention mainly is made up of transmission case 20, scroll chuck 7, three-phase hybrid stepping motor 1, tailstock 9 and base plate 22.Be provided with main shaft 6, power transmission shaft 18 and a pair of worm and gear 5,4 and a pair of travelling gear 2,3 in the transmission case 20, worm gear 5, worm screw 4 are located at respectively on main shaft 6 and the power transmission shaft 18, travelling gear 2,3 be located at respectively that 1 in motor is gone up and power transmission shaft 18 on.The head of main shaft 6 is equipped with scroll chuck 7 and places outside transmission case 20 casings, and motor 1 is fixed in the outside of transmission case 20 casings.
The gearratio of travelling gear 2,3 is 1: 2, and the gearratio of worm and gear 5,4 is 1: 10.Main shaft 6 and power transmission shaft 18 are supported on the casing of transmission case 20 by bearing 17 and bearing 19 respectively.Its main shaft 6 bears axial force and radial load because cylindrical cam groove adds man-hour, and power transmission shaft 18 bears axial force and radial load equally in transmission, so main shaft bearing 17 and transmission shaft bearing 19 are a pair of taper roll bearing respectively.
Shake because of the drive gap of worm and gear 5,4 when preventing main shaft 6 low speed rotation, on worm gear 5, added an adjustable preload device--band-type brake mechanism.Described band-type brake mechanism is made of brake ribbon 14, fixed block 11,16, set bolt 15 and adjusting screw(rod) 12, nut 13, brake ribbon 14 band-type brakes are on worm gear 5, and the two ends of brake ribbon 14 are linked to each other by two fixed blocks 11,16 respectively and are fixed in by bolt, screw rod on the casing of transmission case 20.Wherein an end fixed block 11 is fixing by set bolt 15, but 16 of opposite side fixed blocks be strained and fixed by adjusting screw(rod) 12, nut 13, but the pretightning force of brake ribbon 14 then can be regulated by adjusting screw(rod) 12, nut 13.But, make worm gear 5 bear certain load all the time, thereby the shake when preventing main shaft 6 low speed rotation by adjusting adjusting screw(rod) 12.
Be provided with top 10 in the tailstock 9, be provided with intermediate pads 21 between tailstock 9 and the base plate 22, the bottom surface of tailstock 9 is provided with groove, the upper side of intermediate pads 21 is provided with boss, groove on its tailstock 9 matches with boss on the intermediate pads 21, make it to fix by screw 23 and pad 24 between tailstock 9 and the intermediate pads 21, be fixed on the base plate 22 by screw 25 again.Use for ease of whole Unit Installation, transmission case 20 is fixed on the base plate 22 by hex bolts 26, plain washer 27 and hexagon socket cap head screw 25 with intermediate pads 21, becomes as a whole.
Operation principle of the present invention is: (rotating speed is 10r/min to motor 1, the setting able to programme of its rotating speed is adjusted in 10r/min～300r/min scope), give gear 2,3 with transmission of power, give main shaft 6 by worm screw 4, worm gear 5 with transmission of power again, thereby realize the low speed rotation (rotating speed is 0.5r/min, and its rotating speed can be set by motor and be adjusted in 0.5r/min～15r/min scope) of main shaft 6.The common scroll chuck 7 of main shaft 6 heads is clamped an end of workpiece 8, and the other end of workpiece is withstood by top 10 in the movable tailstock 9 and be fixing, thereby realizes the low speed rotation of workpiece 8.The clamping of workpiece 8 can be undertaken by the axis hole of main shaft 6, also can unclamp hex bolts 23 mobile carrying out on intermediate pads 21 by movable tailstock 9.
The present invention can be used with following two kinds of lathes.The one, this device of equipment on the general NC milling machine workbench of length feed numerical controlization is being arranged, and make the motor of this device link to each other with former digital control system (former digital control system must have the corresponding interface), realize the length feed and the low speed rotation of workpiece, thereby carry out the cylindrical cam groove processing of workpiece; The 2nd, on centre numerically controlled lathe, to reequip, milling cutter is contained in the spindle hole of spindle stock, realizes the high speed rotation of milling cutter, removes the numerical control device of length feed, and the hand slip crate of gear, the tooth bar mechanism that uses engine lathe instead realizes the feed motion of cutting.Remove electric driving tool post on the cross slide, put apparatus of the present invention, and the motor of this device is linked to each other with former digital control system (replacing former length feed numerical control part), realize the length feed and the low speed rotation of workpiece, thereby realize the cylindrical cam groove processing of workpiece.
Claims (2)
1, a kind of low-speed revolving device of processing column cam path, be provided with transmission case, scroll chuck, motor, tailstock and base plate, it is characterized in that: be provided with main shaft, power transmission shaft and a pair of worm and gear and a pair of travelling gear in the transmission case, worm gear, worm screw are located at respectively on main shaft and the power transmission shaft, and travelling gear is located at respectively on power transmission shaft and the motor shaft; Spindle nose is equipped with scroll chuck and places outside the transmission case casing; Motor is fixed in the outside of transmission case casing, and transmission case and tailstock all are fixed on the base plate; Be provided with top in the tailstock, be provided with intermediate pads between tailstock and the base plate, the bottom surface of tailstock is provided with groove, and the upper side of intermediate pads is provided with boss, groove on its tailstock matches with boss on the intermediate pads, is made it to fix by bolt between tailstock and the intermediate pads.
2, the low-speed revolving device of a kind of processing column cam path as claimed in claim 1, it is characterized in that: worm gear is provided with band-type brake mechanism, described band-type brake mechanism is made of brake ribbon, fixed block, adjusting screw(rod), nuts and bolt, and band-type brake mechanism is fixed on the transmission case casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100653540A CN1302895C (en) | 2004-11-29 | 2004-11-29 | Low-speed rotary apparatus for machining cylindrical cam groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100653540A CN1302895C (en) | 2004-11-29 | 2004-11-29 | Low-speed rotary apparatus for machining cylindrical cam groove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1613602A CN1613602A (en) | 2005-05-11 |
| CN1302895C true CN1302895C (en) | 2007-03-07 |
Family
ID=34764669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100653540A Expired - Fee Related CN1302895C (en) | 2004-11-29 | 2004-11-29 | Low-speed rotary apparatus for machining cylindrical cam groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1302895C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248257A (en) * | 2011-05-31 | 2011-11-23 | 李其明 | Omnibearing automatic welding device |
| CN110962047A (en) * | 2018-09-28 | 2020-04-07 | 中国科学院沈阳自动化研究所 | Flexible automatic decomposition system suitable for solid rocket engine |
| CN115870559A (en) * | 2022-12-07 | 2023-03-31 | 滨州鲁德曲轴有限责任公司 | Finish machining tool for cam groove |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3841165A (en) * | 1973-05-16 | 1974-10-15 | J Layfield | Motion converter |
| JPS6037452B2 (en) * | 1975-03-03 | 1985-08-26 | ポラロイド、コーポレーシヨン | compact camera |
| CN1032128A (en) * | 1987-09-25 | 1989-04-05 | 朱新根 | Machine tool for processing curve slot on cylindrical surface |
| CN2560459Y (en) * | 2002-08-15 | 2003-07-16 | 夏振明 | Workpiece propelling mechanism for digital controlled helical groove milling machine |
| CN2608362Y (en) * | 2003-03-14 | 2004-03-31 | 邵胜有 | Composite type mechanical bandbrake |
| CN1540438A (en) * | 2003-10-28 | 2004-10-27 | 肖海波 | Infinite fine-tuning machanism for rotative system |
| CN2756382Y (en) * | 2004-11-29 | 2006-02-08 | 盐城市机床有限公司 | Low speed rotary device for machining cylindrical cam groove |
-
2004
- 2004-11-29 CN CNB2004100653540A patent/CN1302895C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3841165A (en) * | 1973-05-16 | 1974-10-15 | J Layfield | Motion converter |
| JPS6037452B2 (en) * | 1975-03-03 | 1985-08-26 | ポラロイド、コーポレーシヨン | compact camera |
| CN1032128A (en) * | 1987-09-25 | 1989-04-05 | 朱新根 | Machine tool for processing curve slot on cylindrical surface |
| CN2560459Y (en) * | 2002-08-15 | 2003-07-16 | 夏振明 | Workpiece propelling mechanism for digital controlled helical groove milling machine |
| CN2608362Y (en) * | 2003-03-14 | 2004-03-31 | 邵胜有 | Composite type mechanical bandbrake |
| CN1540438A (en) * | 2003-10-28 | 2004-10-27 | 肖海波 | Infinite fine-tuning machanism for rotative system |
| CN2756382Y (en) * | 2004-11-29 | 2006-02-08 | 盐城市机床有限公司 | Low speed rotary device for machining cylindrical cam groove |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1613602A (en) | 2005-05-11 |
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Granted publication date: 20070307 Termination date: 20131129 |