CN103433540A - Axial milling method for titanium alloy slot cavity structure - Google Patents

Abstract

The invention relates to an axial milling method for a titanium alloy slot cavity structure. The axial milling method comprises the following steps: (1) carrying out rough machining on a slotted hole by adopting a large-diameter cutter with the size close to that of a slot cavity to form a notch with the margin of 0.3mm; (2) carrying out axial milling on the corner of the slot cavity by adopting a conventional milling cutter, wherein the radius of the milling cutter is consistent with that of the corner of the slot cavity to be machined; and (3) carrying out finish machining on the inner wall of the slot cavity. According to the axial milling method, the cutter does feeding movement along the direction of a cutter shaft in a machining process, and a cutting edge at the bottom is utilized for drilling and milling combined cutting. The axial milling method is large in axial cutting force and small in radial cutting force, so that a cutter bar can smoothly operate, meanwhile the machining efficiency is improved, and the product quality is ensured.

Description

The axial method for milling of titanium alloy vallecular cavity class formation

Technical field

The present invention relates to a kind of axial method for milling of titanium alloy vallecular cavity class formation, belong to a kind of machining process.

Background technology

So-called Z axis milling method is exactly a kind of method of axially processing, and corner adopts such processing method, and technical advantage is particularly remarkable.At present, general engineers and technicians are when the numerical programming procedure, no matter be steel, titanium class part, or aluminium alloy class part, all recognize the importance that the corner surplus is taken out in advance, on the corner basically all process accordingly, in the time of most again during the numerical programming program, the shirtsleeve operation mode is the mode that adopts the profile layering processing of corner, the cutting depth that reduces the time guarantees machining state on the corner, but, the working (machining) efficiency of this method is low, simultaneously, the cutter cutter R that only weares and teares when actual cut, tool wear is very fast, the cutter loss is very large, the corner reduction of speed is also way commonly used, but this method can not solve cutting width problem on the corner, easily the cutter phenomenon is fallen in the excessive generation of cutting output.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of axial method for milling of titanium alloy vallecular cavity class formation, the method adopts cutter in process to do feed motion along cutter axis orientation, utilize the bottom cutting edge to be bored, mill the combination cutting, the axial cutting force of the method is larger, radial cutting force is less, from to knife bar is operated steadily, improve working (machining) efficiency simultaneously, guarantee product quality.

For overcoming the above problems, concrete technical scheme of the present invention is as follows: a kind of axial method for milling of titanium alloy vallecular cavity class formation comprises the following steps:

1) employing is carried out roughing with the major diameter cutter that vallecular cavity approaches size to slotted eye, forms and leaves the notch that surplus is 0.3mm;

2) adopt conventional milling cutter to carry out axial milling to the corner of vallecular cavity, the milling cutter radius is consistent with vallecular cavity knuckle radius to be processed;

2.1) milling cutter is axial feed, the amount of feeding is no more than the blade width of 1/3 or inserted welding blade of tool diameter;

2.2) after axial feed cutting, then, along the bisector of two corner planes, with one of them notch inner surface, be 45 ° of line withdrawings;

2.3) successively corner is carried out to axial feed processing, until the corner completion of processing;

3) inwall of vallecular cavity carried out to fine finishining.

The axial method for milling of this titanium alloy vallecular cavity class formation adopts above-mentioned steps, not only working (machining) efficiency can improve, reduced the cost of charp tool, cutter is when axially cutting simultaneously, knife bar mainly bears axial force, add the man-hour radial cutting force lower, the ability that knife bar bears axial load will far be better than radially, so corner adopts the phenomenon that axially adopts axial manner generally not there will be cutter to fracture or fall cutter, from the angle of lathe adaptive type, consider, if the power limited of machining tool used, can consider to adopt the method for axial processing, this is because axially the processing power demand is less than helical milling.

The accompanying drawing explanation

The structural representation of the axial method for milling that Fig. 1 is titanium alloy vallecular cavity class formation.

1-withdrawing track wherein; 2-feed track; The 3-feed speed; The 4-rotating speed; The 5-cutting-in; 6-withdrawing distance.

The specific embodiment

As shown in Figure 1, a kind of axial method for milling of titanium alloy vallecular cavity class formation comprises the following steps:

1) employing is carried out roughing with the major diameter cutter that vallecular cavity approaches size to slotted eye, forms and leaves the notch that surplus is 0.3mm;

2) adopt conventional milling cutter to carry out axial milling to the corner of vallecular cavity, the milling cutter radius is consistent with vallecular cavity knuckle radius to be processed;

2.1) milling cutter is axial feed, the amount of feeding is no more than the blade width of 1/3 or inserted welding blade of tool diameter;

2.2) after axial feed cutting, then, along the bisector of two corner planes, with one of them notch inner surface, be 45 ° of line withdrawings;

2.3) successively corner is carried out to axial feed processing, until the corner completion of processing;

3) inwall of vallecular cavity carried out to fine finishining.

The application adopts axial processing mode, is different from the in the past mode of general conventional corner treatment, be axially a kind of by lathe along cutter axially, incision part blank a kind of, be similar to a kind of processing method of drilling.Conventional side edge milling method, main stressed of knife bar part is radial load, increase along with tool length, the bending moment that knife bar partly is subject to is increasing, the requirement of tool setting bar material is also more and more higher, even employing Hardmetal materials, the knife bar of overlength also easily makes screw-on cutter generation chatter, lower owing to axially adding the man-hour radial cutting force, by traditional diamond-making technique radially become cutter axially, the ability that knife bar bears axial load will far be better than radially, and the cutting force in process also obviously reduces, stable cutting.

Claims (1)

1. the axial method for milling of a titanium alloy vallecular cavity class formation is characterized in that comprising the following steps:

1) employing is carried out roughing with the major diameter cutter that vallecular cavity approaches size to slotted eye, forms and leaves the notch that surplus is 0.3mm;

2) adopt conventional milling cutter to carry out axial milling to the corner of vallecular cavity, the milling cutter radius is consistent with vallecular cavity knuckle radius to be processed;

2.1) milling cutter is axial feed, the amount of feeding is no more than the blade width of 1/3 or inserted welding blade of tool diameter;

2.2) after axial feed cutting, then, along the bisector of two corner planes, with one of them notch inner surface, be 45 ° of line withdrawings;

2.3) successively corner is carried out to axial feed processing, until the corner completion of processing;

3) inwall of vallecular cavity carried out to fine finishining.

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