3 crucial level are gotten in CNC Machining process

When 1 pair of knives and spare parts of treatment of the general accuracy machine tool that change a knife, the positional relation of cutting tool and workpiece is to pass measure and handwheel to cooperate to try each other of establish, if cutting tool malposition truly, can try to adjust at any time by handlers. And CNC Machining, hold clip, many cutting tool participates in treatment, for establish each knives in waiting for parameter to input the computer, the computer passes coordinate commutation, make every cutting tool and workpiece establish corresponding relationship. To common treatment, main to knife problem nonfeasance factor considers. To CNC Machining, want to use procedure treatment only, must be opposite knife, can produce serious consequence otherwise. Common treatment changes a knife often is to pass operation feeling to control, and CNC Machining must consider to change knife position seriously, produce collision in case. 1.

The choice of means of 2 outfit clip installs clip to must be opposite afresh every time considering CNC Machining knife, such meetings increase auxiliary handling time greatly, the influence machines efficiency, the “ that also is functions of pair of numerical control machine tool at the same time wastes ” . So, in CNC Machining, after accomplishing outfit clip as far as possible, can machine an entire work surface, in order to fill minute of effect that produces numerical control machine tool. Give with process of treatment of some part part now specification. Equipment: Shaobulin CNC Machining center. Cutting tool: The knife of knife of thick car external cause, fine vehicle external cause, thick knife that bind in a wretched state, essence plunges into groovy knife, center getting, broach, boring cutter, cut off a knife. Clamping apparatus: Pneumatic 3 ungual chuck. If the graph is shown 1 times,the spare parts machines the surface, express with wide solid line. Machine a course: Semifinished product (good stuff) the wide choice that plunge into groove plunges into bore of aperture of center of thick car end panel, external cause the circle outside vehicle of fine of groovy clang aperture, end panel is cut off. Use numerical control machine tool to finish afore-mentioned treatment to need to hold clip only, and machine with general accuracy machine tool, need 4 times to hold clip normally. 1.

Design of 3 cutting tool and photograph of common treatment cutting tool are compared, the cutting tool of CNC Machining has the following characteristic. (1)CNC Machining simplified cutting tool design is analysed with machining example, if the graph is shown 2 times,machine the surface, express with wide solid line. To assure precision of the position, dimension, common treatment can use Shuang Ren to shape only knife, use the precision of lathe tool itself, will assure the treatment precision of the spare parts. And use CNC Machining, because the machine tool can dominate cutting tool niche well and truly, can use odd blade knife to replace Shuang Ren to shape so knife. Designs for this Chan Ren plunges into groovy knife, completed the treatment of the spare parts well. (The use that numerical control machine tool analysed above the design of 2) special cutting tool simplified cutting tool design, not be to say the cutting tool of CNC Machining is simple however. What assume because of numerical control machine tool is those general accuracy machine tool treatment is difficult, all sorts of special spare partses that cannot machine even. If treatment example pursues 3, express with wide solid line. Curved surface has successive treatment, do not have off-the-peg cutting tool to be able to offer an alternative, need to be designed technically. The composition of curved surface should consider when the design, the course taking a knife, smallest circular arc, concave and convex change, whether can produce the ingredient such as interference. Machine the direction that is prospective CNC Machining considering curved surface, be aimed at treatment of this curved surface, designed 3 kinds of cutting tool, if structure of its cutting tool pursues 4, graph 5, the graph is shown 6 times. Pursue among them 4, graph 5 already machined an objective. Use the cutting tool that the graph shows 4 times to try to the spare parts cut, achieved the goal of successive treatment. 2 maths treat stage 2.

1 computation job connects general reason condition to fall, the coordinate of part drawing is chosen with machine program medium coordinate is chosen abhorrent, undertake conversion to coordinate with respect to need at this moment, the dimension that at the same time part drawing place gives out is not program place need certainly want a foundation at this moment machine tool characteristic, computation gives the coordinate that program place needs. The complex to those comparison curved surface that forms by place of linear, circular arc wants computation to give sharp starting point and start of terminal, circular arc and coordinate of terminal, the centre of a circle. 2.

The athletic contrail of heart of blade of 2 cutting tool analyses the numerical control system of machine tool of most now numerical control to have compensation function, can the outline according to part drawing is direct process designing. But, special situation often can appear in treatment, when machining successive curved surface especially, cutting tool and workpiece are incidental interference (produce collision) , sometimes function of cutting tool compensation cannot be used, must undertake an analysis to the athletic contrail of heart of cutting tool blade at this moment. Still 3 spare partses are to in an attempt to exemple undertake an analysis: Use equipment: Center of work of Lin Jia of carry on cloth. (The contrail of blade heart motion that knife of 1) semicircle arc machines pledges according to the motility of cutting tool and machine the analysis of the course, we found the corresponding concern between contrail of motion of heart of cutting tool blade and spare parts outline, the successive curve that the parallel line segment that is correspondence of outline of group and one spare parts, homocentric circle, eccentric place comprises, if the graph is shown 7 times,its correspondence concerns. (If the structure of cutting tool of blade heart contrail that knife of 2) double circular arc machines pursues 8. Analytic conclusion and semicircle arc knife are identical. The contrail of cutting tool the centre of a circle nods: Program of 3 programs level is the language that numerical control machine tool can identify exclusively, it issues a statement of a treatment to the machine tool, controlling the each measure of the machine tool, the stand or fall of degree affects the quality of treatment and efficiency directly. This is in with respect to need function of comprehensive understanding machine tool, on the foundation of the each link of treatment and necessary relevant knowledge, adopt ceaseless practice, enhance process designing technical ability. 3.

Of the function of machine tool of inherent program numerical control of machine tool of 1 reasonable use numerical control rise ceaselessly, reflect not just in mechanical performance side, and more important is to reflect the service function in software to go up. To common treatment content, in the system the machine program with well-rounded stock. Reasonable the inherent program that chooses a system serves for treatment, it is a very main job in process designing job. 3.

2 programs manage the data that gets according to cutting tool contrail or data processing and relevant document, according to the instruction code with numerical control specific machine tool, write the machine program of the spare parts, it is recording all sorts of information, including treatment method not only, machine trick, and the process capability that returns report to give an unit and treatment level. Should make its serve as a special technical file to appropriate keeps and file. To process designing personnel, can call this technology file to reduce workload; To producing controller, can control manufacturing process effectively. Normally the circumstance falls, be lose commonly used order to the computer to control a system. To the machine program of commonly used spare parts, the record leaves the spare parts name of each programs. To not commonly used program, want to use written form to record. To the program in appear easily the place of the problem adds necessary specification, use in order to have in the future. 3.

The 3 treatment content that solve spare parts of effective treatment problem with parameter process designing opportunely: Aperture reachs circular arc underside inside. What use device: Lathe of appearance of Shanghai numerical control. When machining general circular arc, use normally call program of G66 means loop, if contrail of motion of its cutting tool pursues 9, in be being machined actually, discover, because intensity of cutting tool point of a knife is weaker, cutting tool motion reachs pointed horn point, cutting tool two-way get power, cutting tool durability is very poor. Craft analyses a result, if pursue,had better use the treatment course of 10. At this moment if use direct process designing, every time feed wants computation to give cutting tool contrail. Because cutting tool is rigid very poor, need divides knife treatment for many times. If want to change volume of penetration of a cutting tool, even recount. For this, we use parameter process designing, solved the treatment of the aperture inside the spare parts and round dambered surface well. The analysis of crucial factor in CNC Machining, provided feasible basis for the reasonable and effective utilization rate that raises numerical control machine tool. Its apply the treatment precision that can assure numerical control machine tool effectively and favorable treatment result. CNC Milling