Brief introduction of foundation of process designing of numerical control lathe

1. is metric (the metric system) with imperial process designing

 

   The length unit dimension that numerical control lathe uses has metric (the metric system) and imperial two kinds, by appropriative instruction code set grows degree of unit dimension, if FANUC-0TC system uses G20 to express to use imperial unit dimension, g21 expresses to use metric (the metric system) unitage key link. After systematic electrify switchs on the mobile phone, the machine tool is in metric size status automatically.

 

2. diameter process designing and radius process designing

 

(: of 1) diameter process designing? Silent of Ben Dong of cover of take along sth to sb drips the diametical value that the coordinate value of axis of Xiao of Mou of silk ribbon of Yao of the  that protect  is part drawing to go up namely.

(: of 2) radius process designing? The coordinate that take along sth to sb risks axis of Xiao of Mou of silk ribbon of Yao of  of  of Ta of silent of Dong of cutting of the feet is worth the radius value that goes up for part drawing. The consideration uses the convenience that go up, use diametical process designing commonly.

A) diameter process designing                       B) radius process designing

Graph classification of process designing of turning of 1 numerical control

A) A:(30, 80.0) , b:(40, 60)     B) A:(15, 80.0) , b:(20, 60)

 

Of 3. lathe before buy tool carrier and postposition tool carrier

 

Tool carrier of numerical control lathe decorates have two kinds of forms: If the graph is shown 2 times

Graph of 2 lathe before buy tool carrier and postposition tool carrier

 

(Tool carrier of the buy before 1) . Buy tool carrier is located in before before Z axis, with tool carrier of traditional center lathe like decorating a form, tool carrier slideway is horizontal slideway, use 4 worker worker dynamoelectric tool carrier;

(2) postposition tool carrier. Postposition tool carrier is located in at the back of Z axis, the slideway position of tool carrier and plane tilts, such configuration facilitates it is the cutting process that watchs cutting tool, easy to cut bits eliminate, postposition space is large, can design more project tool carrier, general muti_function numerical control lathe is designed for postposition tool carrier.

 

Radius of 4. point of a knife is compensated

 

   Go to the lavatory for process designing in process designing of numerical control turning, see point of a knife be nodded as a needle, the athletic contrail of the cutting tool in numerical control program is the athletic contrail with this bit more pointed hypothesis namely. (like the graph 3 are shown)

Graph 3 hypothesises point of a knife and radius of point of a knife

 

  Compensation of radius of point of a knife introduced in numerical control system: Write in numerical control program after finishing, in inputting value of radius of foregone point of a knife cutting tool to compensate a watch, system of the numerical control when the program moves will be automatic the virtual campaign contrail that is worth pair of cutting tool according to radius of corresponding point of a knife undertakes compensating.

   Use commonly in numerical control treatment but dislocation razor blade, the radius of round horn of point of a knife of every kinds of razor blade is certain, make choice of the model of bit, the value of radius of round horn of point of a knife of corresponding razor blade can decide.

   Radius of circular arc of point of a knife amends a statement:

Statement form G41(G42, G43)G01(G00)X(U)_Z(W)

Instruction function G41 is left compensation of radius of circular arc of point of a knife;

         G42 is right compensation of radius of circular arc of point of a knife;

         G40 is to cancel compensation of radius of circular arc of point of a knife.

The instruction explains Down cutting tool athletic way looks, cutting tool is left compensation of radius of circular arc of point of a knife in the left of workpiece; Cutting tool is right compensation of radius of circular arc of point of a knife in the right of workpiece. The sharp movement gift that passes cutting tool only is built and cancel radius of circular arc of point of a knife to compensate.

 

The initiative condition of machine tool of 5. numerical control

 

Initiative condition: The index accuses the state that has after machine tool electrify, also call the position with acquiescent interior of numerical control system, general set is absolutely the dimension of unit of length of coordinate means process designing, use the metric system, initiative position that cancels cutting tool compensation, main shaft and cutting fluid pump to stop the condition such as the job to regard numerical control as the machine tool.