For the device of slender shaft turning
Technical field
The utility model belongs to field of machining and machinebuilding technology, is specifically related to a kind of device for slender shaft turning.
Background technology
Normal length and diameter ratio are greater than the axle of 25 slender axles.This kind of part is generally processed on lathe, due to its poor rigidity, during turning under the effect of cutting force, gravity, heat in metal cutting, slender axles easily occur bending and deformation, the path of the prolonging direction of slender axles and topping machanism is caused not to be on same axis, destroy the accuracy of topping machanism and part relative motion, make the slender axles processed produce the shape that centre is thick, two thin, have a strong impact on the machining accuracy of part.After slender axles produce flexural deformation simultaneously, cause the element precision processed not high, the shape of the not necessarily technological requirement out of the slender shaft turning after distortion.
Chinese patent CN2007201949211, a kind of tool holder being suitable for cutting slender axles is disclosed, there is chuck, the end face of the claw of chuck is fixed with dress cutter blade row, lathe tool is evenly distributed in around slender axles to be processed, make the point of a knife of lathe tool on same radial section by adjustment, add man-hour multitool and cut simultaneously, vertically acting on of making to produce is cancelled each other by the radial cutting force in the axial horizontal plane of slender axles.But using above-mentioned technology, chuck is a kind of machine tool accessories, is made up of multiple parts such as chuck body, large cone pinions, and have volume large, the features such as quality is large, are only applicable to large lathe; When feed, parallel action is larger in the axial cutting force of slender axles simultaneously, slender axles is extended, pushes up too tight if top, once slender axles are by thermal stretching, slender axles will be caused to be compressed axially and produce flexural deformation.
Utility model content
The utility model, for the deficiency in above-mentioned slender axles part processing, provides a kind of device for slender shaft turning; By the use of small parts, solve simultaneously radial and axial cutting force problem, on the basis of machining deformation of slender axles workpiece, obtain better processing effect to preventing.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme: comprise for the fixture of elongate axle and the topping machanism for cutting slender axles, slender axles fixture comprises the chuck and top that pairing uses, top is centre with endlong movement, by centre head, top body and the elastomeric element be in top body are formed, topping machanism comprises handle of a knife, the cutterhead be connected with handle of a knife, and be arranged on equally distributed lathe tool component on cutterhead, lathe tool component comprises and being arranged on cutterhead for installing the square hole of blade, positioner and adjusting device, the positioning screw hole be threaded and dog screw is provided with in positioner is provided with, be provided with swivel nut in adjusting device, in described swivel nut, connect adjustment screw.
Principle of the present utility model and beneficial effect: for the device of slender shaft turning, comprise slender axles fixture and topping machanism, and fixture is used for the position of elongate axle, and topping machanism is used for machining; Slender axles fixture comprises chuck and the centre with endlong movement of pairing use, and chuck is relative with centre with endlong movement and establish, according to the length adjustment chuck of slender axles and the spacing of centre with endlong movement; Elastomeric element in centre with endlong movement, when carrying out slender axles machining, during feed, axial cutting force increases, slender axles extend, use elastomeric element available buffer portion stretches amount, make slender axles to be processed can axial stretching, compensate the line that heat in metal cutting causes and expand, avoid pushing up too tight because of top, slender axles are extruded and produce flexural deformation; Each lathe tool component has and is provided with supporting adjusting device and positioner, conveniently changes lathe tool and installs; Dog screw is provided with, for the position of fixing lathe tool in positioning screw hole; Be provided with swivel nut in adjusting device, the internal thread of swivel nut and adjustment screw external screw thread with the use of, by turning adjusting screw, regulate the radial feeds of lathe tool.The utility model cutterhead is a finding, small in volume, be applicable to general lathe, solve simultaneously radial and axial cutting force problem, to the machining deformation effectively preventing slender axles workpiece, achieve more excellent effect, effectively raise the degree of accuracy and the machining accuracy of the processing of part.
When adopting the device for slender shaft turning of technical solutions of the utility model, first lathe tool component is installed, blade is loaded in square hole, use dog screw that blade is fastening, swivel nut is loaded in adjusting device, then adjustment screw is loaded in swivel nut; Slender axles are passed in the middle of cutterhead, two uses chuck and centre with endlong movement to be fixed by slender axles respectively, the application point of maintenance chuck hub and centre with endlong movement and slender axles centerline are on the same line, the position of multi-blade is regulated simultaneously, by adjusting device adjustment blade radial feeds, then carry out cylindrical turning processing.
Further, described topping machanism comprises the lathe tool component of more than 3, be distributed on cutterhead, the distance that adjacent lathe tool component is in circumferentially is equal, when multitool cuts slender axles, decomposite the power of both direction separately, and effect on the same line power can cancel out each other, thus better offset radial cutting force.
Further, described point of a knife is stepped profile on radial section, projection pitch in adjacent point of a knife horizontal direction is between 0.1 ~ 0.5mm, in one week of elongate rod rotation, progressive elongate rod is cut of blade, processing effect is good, not easily wearing blade, makes the axial cutting force of generation little simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, technical solutions of the utility model are further illustrated:
Fig. 1 is the structural representation of the utility model for the device of slender shaft turning;
Fig. 2 is the structural representation of topping machanism in Fig. 1;
Fig. 3 is the top structural representation of Fig. 1 Elastic;
Fig. 4 is the schematic diagram of the utility model for the device cutterhead of slender shaft turning;
Fig. 5 is the schematic diagram of the utility model for the device lathe tool component of slender shaft turning;
Fig. 6 is the installation diagram of Fig. 4 lathe tool component.
Detailed description of the invention
Below in conjunction with drawings and Examples, technical solutions of the utility model are further illustrated:
Reference numeral is; Chuck 1, topping machanism 2, centre with endlong movement 3, handle of a knife 201, cutterhead 202, lathe tool component 203, blade 2031, square hole 2032, positioning screw hole 2033, adjusting device 2034, dog screw 2035, swivel nut 2036, adjustment screw 2037, centre head 301, elastomeric element 302, top body 303.
Embodiment 1, for three lathe tool components:
As shown in Figure 1, the utility model comprises chuck 1, topping machanism 2, centre with endlong movement 3 for the device of slender shaft turning.
As shown in Figure 2, described topping machanism comprises handle of a knife 201, the cutterhead 202 be connected with handle of a knife 201 and to be arranged on cutterhead 202 equally distributed three lathe tool component 203.
As shown in Figure 3, described centre with endlong movement 3 is made up of centre head 301 and the elastomeric element 302 be in top body 303.
As shown in Fig. 4 ~ Fig. 6, described lathe tool component 203 comprise be arranged on cutterhead 202 for installing the square hole 2032 of blade 2031, positioning screw hole 2033 and adjusting device 2034, be provided with dog screw 2035 in described positioning screw hole 2033; Described adjusting device 2034 is provided with swivel nut 2036, the internal thread of swivel nut 2036 and the external screw thread of adjustment screw 2037 with the use of.
The utility model is adopted to be used for the device of slender shaft turning, first lathe tool component 203 is installed, blade 2031 is loaded in square hole 2032, use dog screw 2035 by fastening for blade 2031, swivel nut 2036 is loaded in adjusting device 2034, then adjustment screw 2037 is loaded is equipped with in the adjusting device 2034 of swivel nut 2036 in advance; Passed in the middle of cutterhead 202 by slender axles, two uses chuck 1 and centre with endlong movement 3 to be fixed by slender axles respectively, and the application point of maintenance chuck 1 center and centre with endlong movement 3 and the centerline of slender axles are on the same line; The position of multi-blade 2031 is regulated simultaneously, blade 2031 radial feeds are adjusted by adjustment screw 2037, make point of a knife in stepped profile on same radial section, the projection pitch in adjacent point of a knife horizontal direction, between 0.1 ~ 0.5mm, then carries out cylindrical turning processing.
Principle of the present utility model and beneficial effect: for the device of slender shaft turning, comprise slender axles fixture and topping machanism 2, and fixture is used for the position of elongate axle, and topping machanism 2 is for machining; Slender axles fixture comprises chuck 1 and the centre with endlong movement 3 of pairing use, and chuck 1 is relative with centre with endlong movement 3 and establish, according to the length adjustment chuck 1 of slender axles and the spacing of centre with endlong movement 3; Centre with endlong movement 3 is made up of centre head 301 and the elastomeric element 302 be in top body 303, when carrying out slender axles machining, during feed, axial cutting force increases, slender axles extend, use elastomeric element 302 buffer portion elongation, make slender axles to be processed can axial stretching, compensate the line that heat in metal cutting causes and expand, avoid pushing up too tight because of top, slender axles are extruded and produce flexural deformation; Be arranged on equally distributed lathe tool component 203 on cutterhead 202, point of a knife is stepped profile on radial section, projection pitch in adjacent point of a knife horizontal direction is between 0.1 ~ 0.5mm, in one week of elongate rod rotation, progressive slender axles are cut of blade 2031, processing effect is better, and not easily wearing blade 2031, make the axial cutting force of generation little simultaneously; Each lathe tool component 203 has and is provided with supporting adjustment screw 2037 and dog screw 2035, conveniently changes lathe tool and installs; Dog screw 2035 is provided with, for the position of fixing lathe tool in positioning screw hole 2034; Adjusting device 2034 is provided with swivel nut 2036, the internal thread of swivel nut 2036 and adjustment screw 2037 external screw thread with the use of, by turning adjusting screw 2037, regulate the radial feeds of lathe tool.The utility model solve simultaneously radial and axial cutting force problem, to the machining deformation effectively preventing slender axles workpiece, achieve more excellent effect, effectively raise the degree of accuracy and the machining accuracy of the processing of part.
Above-described is only preferred embodiment of the present utility model; should be understood that; for a person skilled in the art; without departing from the concept of the premise utility; some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.