Car whorl brief introduction

The basic tooth of whorl of the basic tooth of common triangle whorl common triangle like the graph 2 are shown, each name of basic measure is as follows: Graph thread of 2 common triangle is main tooth D, inside whorl old way (nominal diameter) ; D, outside whorl old way (nominal diameter) ; D2, inside screw center diameter; D2, outside screw center diameter; D1, inside whorl trail; D1, outside whorl trail; P, pitch; H, primitive triangle height. The main essential factor that decides whorl has 3: The whorl inside section plane of axial of whorl of tooth horn α two lateral included angle. =60o of metric whorl α , =55o of imperial whorl α . Pitch P it is the distance that along axes direction the correspondence between two teeth nods photogenic adjacent. D2(d2) of screw center diameter the diameter of the cylinder of a hypothesis that it is H of height of smooth whorl theory. Be in in the whorl tooth that diameter is in is thick with groove wide equal. When screw center diameter of inside and outside is only consistent, both ability cooperates well. 2.

The method of the whorl outside turning and measure (1) preparation works 1) when installing whorl lathe tool, the horn of point of a knife of lathe tool is equal to =60o of α of whorl tooth horn, ability of O=0o of γ of the horn before its assures the tooth of workpiece whorl horn, otherwise tooth horn will produce an error. When having rough machining only or when whorl precision demand is not high, the horn before its is desirable 20o of γ O=5o ～ . The point of a knife when installing whorl lathe tool aims work center, be opposite with example knife, in order to make sure the axes photograph of the horny bisector of horn of point of a knife and workpiece is perpendicular, the tooth that the car goes horn ability won't be deflective. If pursue,3 are shown. Graph angle of geometry of 3 whorl lathe tool and be opposite with example knife 2) the circle outside pressing whorl of whorl norms car, need length to engrave a whorl length to end a string by place. Reach car of thread outside diameter first dimension, the whorl that goes up in workpiece with point of a knife next is stopped manage a quarter small visible line, regard a car as the mark retreating a knife of whorl with it. 3) the pitch P according to workpiece, check the sign on the machine tool, adjust position of power of feed box begin and the workpiece pitch that deserve to change the tine number that registers round of box gear to need in order to win place next. 4) rotate speed of affirmatory main shaft. Abecedarian should move rotate speed of lathe main shaft lowest fast. (2) the method of car whorl and measure 1) the position of rest of deepness of cutting of affirmatory car whorl, will medium slide scale moves null, drive, make point of a knife slight osculatory workpiece surface, next rapid will medium slide scale is moved to null, in order to facilitate feed notes number. 2) try cut the first corkscrewed yarn to check pitch. Shake bed saddle come to be in from tooth of 8~10 of workpiece end panel, transverse feed 0.

05 the left and right sides. Drive, add up to split nut, a corkscrewed yarn goes out in workpiece surface car, stop line place to exit lathe tool to whorl, turn over right end of workpiece of fall back on of handlebar lathe tool; Jockey, check pitch with steel rule correct. If pursue,4a place is shown. 3) adjust amount of back penetration of a cutting tool with dial, drive cutting, be like graph 4d. The always bears penetration of a cutting tool to measure Ap and pitch relationship of whorl presses ≈ of experience formula Ap 0.

65P, second quantity of back penetration of a cutting tool is made an appointment with 0.

1 the left and right sides. 4) lathe tool will come when terminus, should have done retreat a knife to jockey preparation, exit lathe tool quickly first, leave next turn over a car to exit tool carrier. Be like graph 4e. 5) again transverse feed, continue cutting gives the correct tooth 4f that be like a graph to the car. Graph method of 4 whorl cutting and measure 3.

1) of screw cutting note notices and eliminate procrastinate board " idle stroke " 2) avoid " buckle in disorder " . Good when the first corkscrewed yarn car later, the turning after the 2nd feed, point of a knife is absent original corkscrewed yarn (helix picket) in, slant however left or slant right, even the car is among tooth top, whorl car chaos this phenomenon is called " buckle in disorder " the method that precaution buckles in disorder is to be used suitable (positive and negative) vehicle standard turning. Small when horn controls whorl of cutting law turning procrastinate board mobile distance does not pass big, when if attaint of the cutting tool in turning road needs to change a knife to perhaps carry step aside innocently afresh,adding up to nut, should notice to be opposite in time knife. 3) is right knife: Install good whorl lathe tool to wanting above all before the knife, press next split nut, car (the attention should be to take a knife for nothing) jockey, shift is medium, little procrastinate board make point of a knife accurate in falling into former helix in a wretched state (the attention cannot move to procrastinate greatly board) , at the same time the basis is in the position in helix chamfer to be done afresh in procrastinate board the earmark of feed, exit lathe tool again, · turn back car, remove the car to whorl head, reentry knife.

.

.

.

.

.

, . It is to must noticing when the knife the vehicle is right knife. 4) borrows a knife: Borrowing a knife is screw cutting decides deepness hind, will small procrastinate board forward or move to was apart from reentry drive a vehicle to cut backward, the attention when borrowing a knife is little procrastinate board mobile distance cannot pass big, lest tooth tank car wide cause " buckle in disorder " , 5) when using two thimble to install whorl of clip method car, after workpiece debus when again new turning, should be opposite first knife, hind turning lest " buckle in disorder " 6) safety note: (All handle had been checked to whether be in car whorl position first before 1) car whorl, prevent to drive blindly. (2) car whorl inch want thought concentration, the action is quick, reaction delicacy; (When 3) uses whorl of car of high-speed steel lathe tool, car head rotate speed cannot too fast, lest cutting tool wears away; (4) should prevent lathe tool or tool carrier, procrastinate board with barge against of end of chuck, bed; (When 5) nut coming back, should retreat lathe tool from workpiece, prevent laceration of hand of lathe tool general, do not drive come back to tighten or exit nut; (6) go to gyral whorl cannot be felt with the hand or be brushed with bombazine. 4.

The account that waste product produces when the quality of the whorl outside the car analyses turning whorl and preventive are expressed CNC Milling CNC Machining