TW464570B - Method of high precision hole milling - Google Patents

Abstract

This invention relates to a method of high precision hole milling, of which the tool is shifted after milling the hole to mill to hole edge with the a configuration of arc milling and then fine mill; after idling several times, continue the arc milling until the tool goes back to the shifted point and then proceed the tool disengaging or the subsequent action. By the tool disengaging or proceeding the subsequent action to leaving the fine milled hole edge, the completeness and precision of the hole edge after fine milling can be ensure, so as to achieve the object of high precision.

Description

ab 4 5 7 〇 5. Description of the invention (1) The present invention is a high-precision milling method. By means of offset and fine milling, the milling marks caused by the milling stoppage are indeed milled, and the starting or Follow-up operations are moved to those that are not in contact with the edge of the hole to achieve the high precision. 〇In order to improve the accuracy of the edge of the hole after milling, it must go through the process of fine milling. Please cooperate with the fifth figure, The process is to form a hole with a certain inner diameter after general milling (G), and when the milling (G) ends, the tool stop point (S) will be formed at the tool stop, which is easy here Causes a larger milling mark, in order to improve the accuracy of the surface diameter of the inner hole, that is, fine milling (Η) with an empty knife, and after the rotary milling of the inner edge of the hole for several times, the tool is started after the finishing milling stop (E 3). Or follow-up operations; in this way, there are the following shortcomings, such as: the precision of the sharp can not effectively raise the South. During the process of sharp hole machining (G) or empty knife fine milling (Η), each of them stops The point (S) and the finishing milling stop point (E3) are both at the same point, especially after the finishing milling stop point (E3). He's working, causing it to stop here marks that is not re-dressing, precision here the self is very limited and can not cope with high precision demand, so it is necessary to improve the person. In view of this, the inventor has developed a high-precision milling method of the present invention that meets the above-mentioned conditions in order to achieve the effect of precision milling in the process of precision milling. The main purpose of the present invention is to provide a high-precision milling method, which is performed after offsetting, milling semi-circle, precision milling, milling semi-circle and returning to the origin after milling or performing other subsequent operations. Before and after the process

Page 4 457 0 V. Description of the invention (2) The center is milled in a semicircle, so that the tool stop marks that may be caused by the tool stop point can be eliminated to meet the demand of high precision. In order to enable your reviewing committee to further understand the structure, characteristics and other purposes of the present invention, the following preferred embodiments are attached with detailed descriptions as follows: (1) Schematic description: The first figure: the present invention Process flow diagram. FIG. 2 is a schematic flowchart of an embodiment of the present invention. FIG. 3 is a schematic view of a lifting knife according to an embodiment of the present invention. FIG. 4 is a schematic plan view of an embodiment of the present invention. Fifth figure: the conventional fine milling schematic. (2) Description of drawing number: (A) Milling hole (B) Offset (C) Milling arc (D) Fine milling (E) Milling arc (F) Return to origin (G) Machining (Η) Empty knife precision Milling

(1 0) Down to the cutting starting height I Η (2 0) Cutting the workpiece to the first depth and reaming Η — Κ (2 1) Horizontal milling r 0 — Q (2 2) Cutting inner circle Q — Q (2 2 0) Repeat cutting and milling (2 3) back to the origin Q — r〇

(3 0) Cut the workpiece to the second depth and reaming K — V (3 1) Horizontal milling r 0 — Q (3 2) Cut and mill the inner circle Q — Q (3 2 0) Repeat cutting and milling

464570_ V. Description of the invention (3)

(3 3) Cutting and reaming Q — R (34) Cutting and milling inner circle R — R '

(35) Return to origin R--rO

(40) Cutting the workpiece to the third depth and reaming V — S

(4 1) Horizontal milling r 0 — Q (42) Cutting and milling inner circle Q—Q (420) Repeated cutting

(4 3) Cutting reaming Q — R

(44) Cutting 内 Inner circle R — R (4 5) Return to the origin R — r 0 (4 6) Offset to the cutting and milling starting point r 〇 — E 1

(4 7) Milling of eccentric circle by eccentric circle E 1 — E (4 8) E 2 — E 2

(4 9) Offset center tangent cutting 1/2 circle E 2 — E (50) Finishing operation S — SE 1-U 1 (5 1) Milling on off center tangent circle 1/2 circle U 1 — (5 2) Finish milling U 2 — U 2 (5 2 0) with the original center. Repeat finishing milling (5 3) Mill with a eccentric circle and cut 1/2 circle U 2 — (5 4) Return to the origin U 1 — R 0

(60) Return to the starting height S—H (7 0) Return to the original height Η —1 (I) Original height (Η) Start height (K) First depth (V) Second depth (S ) Third depth (r 0) original center

4 6457 0 V. Description of the invention (4) (r 1) Offset center (Q) First reaming point, second one Reaming point, third reaming point (R) second two The secondary reaming point, the third secondary reaming point (E 1), the first offset point (E 2), the tangent point (U 1), and the second offset point (U 2), please refer to the first figure. The process of the main precision milling method of the present invention is as shown in the figure. The main process is: Milling (A): After the overall milling or reaming operation is completed, the process of deflection is fine, and the deflection (B ): Move the tool from the original center r 〇 to the offset point E 1, so that the center of the tool milling circle is moved to the offset center r 1 point; Milling arc (C): The tool mills the circle with the offset center r 1 as the center , Moved from the offset point E 1 to the tangent point E 2, as shown in the figure, which is performed in the form of milling a semicircle; Fine milling (D): Mills a circle with the original center r 0 as the center, and uses the tangent point From E 2 to the tangent point E 2, after 圊 -shaped fine milling several times; Milling circular arc (E): Another center is the offset center r 1, which is directly milled from the tangent point E 2 to the offset point E 1, which is milled. Half-circle shape performer; return to origin (F): again Move from the offset point E 1 to the original center r 0, and perform subsequent operations. In this way, the work of offset and fine milling can be completed, in which each program is completed without stopping, so that the stopping point after milling can be accurately milled, and the precision of the southern precision is achieved.

Page 7 V. Description of the invention (5) In order to make your reviewers understand the main spirit of the present invention, we will use a deep hole and reaming operation in conjunction with the off-set precision milling operation of the invention to improve the milling hole. Precision, please match the second, third, and fourth figures, and the process of the present invention is as follows: Decrease to the starting height of cutting (10): reduce the tool from the original height I to the starting height Η, and start to expand. Drilling of holes and deep holes; Cutting the workpiece to the first depth and reaming (20): Cutting the workpiece from the starting height Η down to the first depth K; Horizontal milling (.2 1): from the original center r 0 horizontal cutting to the first reaming point Q; cutting and milling the inner circle (2 2): continuous cutting from the first reaming point Q to the original center r 0 as the center of the circle to form a deep hole until the first Reaming point Q once; Repeat cutting and milling (2 2 0): Repeated cutting and milling of circular holes with radius (Q); Return to the origin (2 3): After cutting the first hole body, return to the first Reaming point Q once, and then move from this point to the original center r0; cut the workpiece to the second depth and reaming (30): cut from the first depth K to the second depth V Milling level (31): original milling and then horizontally through the center of the second milling r 0 of the first reaming point Q;

Inner circle for cutting and milling (3 2): Cut the circle with the original center r 0 to form the second reaming. Cut the circle from the second reaming point Q to the second reaming point Q.

^^ 570 5. Description of the invention ¢ 6) Repeated cutting and milling (3 2 0): Repeated cutting and milling into a second reaming; Cutting and milling reaming (3 3): Re-moving again and reaming from the second one Point Q moves to the second secondary reaming point R; Cutting inner circle (3 4): Reaming, the tool cuts from the second secondary reaming point R with the original center r 0 as the center of the circle to the second Secondary reaming point R; Back to origin (3 5): After countersinking is formed, move from the second secondary reaming point R to the original center r 0; cut the workpiece to the third depth and reaming ( 4 0): The cutting depth of the tool is cut from the second depth V to the third depth S; horizontal ί first cut (4 1): from the original center r ◦ tangential to the third one of the reaming point Q; cutting and milling Inner circle (4 2): circular cut from the third reaming point Q with the original center r 〇 as the center, return to the third reaming point Q; repeat cutting and milling (4 2 0): repeatable Cutting and milling to the third reaming formation; Cutting and reaming (4 3): Move from the third reaming point Q to the third bis reaming point R; Cutting and milling the inner circle (4 4): From the third reaming point R to the original center]: 〇 is taken as the center to cut the arc back to the third second reaming point R to form a rough expansion The form; return to the origin (4 5): move from the third reamer R to the original center r 0; offset to the cutting and milling starting point (4 6): offset the tool from the original center r 0 To the first offset point E 1;

464570 V. Description of the invention σ) Offset circle center tangent milling 1/2 circle (4 7): preliminary fine milling is performed, from the first offset point E 1 and the offset center r 1 to the circle tangent point E 2 The original center is sharp (4 8): Then the circle is cut from the original point r 2 to the original point r 2 as the center, forming the first sharpness; Offset center tangent circular milling of 1/2 circle ( 4 9): After the first finish milling operation is completed, continuous movement is performed, and the offset center r 1 is used to cut the circle from the tangent point E 2 to the first offset point E 1 to complete the entire first finish milling process; Finishing operation (50): The horizontal height of the tool is maintained at the third depth S, and the tool moves outward from the first offset point E. 1 to the second offset point U 1; Milling 1/2 circle (5 1): cut from the second offset point U 1 with the offset center r 1 to the tangent point U 2; fine milling with the original center (5 2): cut the circle with the original center r 〇 as the center Move from the tangent point U 2 to the tangent point U 2 around the circle to complete the preliminary fine milling; Repeated fine milling (5 2 0): Continuous repeated fine milling until the required accuracy and degree are reached, return to the tangent point U 2 ; Milling with offset center 2 circles (5 3): continuous from the tangent point U 2 directly to the offset center r 1 as the center of the circle to the second offset point U 1 and back to the origin (5 4): then from the second offset point U 1 Move the tool back to the original center r 0; Return to the starting height (60): Move the tool from the third depth S to the starting height Η;

Page 10 464570 V. Description of the invention (8) Return to the original height (70): The cutter moves from the initial height to the original height I to complete the overall operator. '' The whole reaming and deep hole milling operations, whether it is the first precision milling or the whole precision milling, are based on the method of offset precision milling, so that it is at the tangent points Ε 2 and U 2 during the precision milling The tools are quickly scanned without any pause on the inner edge of the hole. This can ensure the accuracy of cutting and milling, and then finish the milling operation, and the start and end of the finishing milling operation are offset. The continuous cutting and milling method is completed. There is no saw mark on the inner diameter of the milling hole, which can meet the demand of high precision. And this fine milling process can be regarded as the cycle fixing mode in the NC lathe, so that the user can choose according to different needs and cooperate with other programs to achieve high practicality. In summary, the present invention can indeed achieve the above-mentioned functions. Therefore, the present invention should comply with the patent application requirements and apply according to law.

Claims (1)

2. Applying the plug-hole milling operation, the milling circle E1 is moved to the precision milling circle, and the milling circle E 1 is moved to the precision milling 2 mode. The precision milling circle milling is shifted to the offset to return the tangent point to the original. 2 · 'Among them, 3 · of The process is a kind of high: Yu whole; and its milling work: move the center of the blade to fl: the cutting point E: arc several times with the original sharp: with the point E 1 E 2 no point: and then proceed to apply a kind of milling arc Competitiveness: The precision and deep features of the milling body are offset from the original offset by 2; after the center r; the offset is at the midpoint, so that the operation precision of the subsequent patent standard by the offset is milled _Ά_ a correction hole The method, wherein, the completion of the reaming operation is: the center r 0 of the offset fine milling is shifted r 1 point; the center r 1 of the bit is the center milling circle. The main flow from the offset is: After that, the subsequent finishing process is performed. ; To the offset point E makes the tool point 0 a sharp circle and from the tangent point E 2 to the tangent point g. The center r 1 is the number of steps on the circle to stop the tool. The point E 1 is moved to the machining and starting circle. By the method of tool hole, the center is formed by the high milling semicircle described in the operation of the original center. Tangent point E 2 form a direct point of continuous operation, R & lt square, a successor. Accurate sharp hole method The shape of the arc is. Cooperate with reaming and milling to lower the cutting starting height: reduce the tool from the original height I to the initial return Η 'start the reaming and deep hole operation; ，, cutting the workpiece to the first depth and reaming: from The starting height 切削 cuts the workpiece down to the first depth κ; horizontal milling: horizontally cuts from the original center r 〇 to the first reaming point q Page 13: 2001.06.14.013 4 6 457 0 _Case No. 89Π179Ι Date of amendment 6 、 Application patent scope 9 Cutting and milling inner circle: Continuous cutting is performed by the first reaming point Q with the original center r 0 as the center, forming a Deep hole, go back to the first reaming point Q; Repeat cutting and milling: repeatedly cut and mill a circular hole with radius Q; Return to the origin: After cutting the first hole body, go back to the first reaming Point Q 'moves from this point to the original center r 0; cutting the workpiece to the second depth and reaming: cut from the first depth K to the second depth V; horizontal milling: re-horizontal milling from the original center r 〇Milling to the second reaming point Q; Cutting and milling inner circle: The second reaming is formed by cutting the circle at the original center r 0, and the second reaming point Q is cut back to the second reaming. Point Q; Repeated cutting and milling: Repeated cutting and milling into the second reaming; Sharp reaming: Move out again from the second reaming point Q to the second reaming point R; Cutting and milling Inner circle: for reaming, the tool cuts from the second secondary reaming point R with the original center r 0 as the center to the second secondary reaming point R; return to the origin: wait for the circular hole to become After that, the second reaming point R is moved to the original center r 0; the workpiece is cut to the third depth and the reaming: the cutting depth of the tool is cut from the first depth V to the third depth S; horizontal cutting : Cut from the original center r 0 to the third reaming point Q; Cut and mill the inner circle: Make a circular cut from the third reaming point Q with the original center r 0 as the center to return to the third one Hole point Q; ^ 6457 Q Case No. 89111791 VI. Repeated patent application range Milling and milling reaming R; Inner circle of cutting and milling: Return from the first circular arc to the third and second to the origin: From the first offset to the beginning of the milling Offset point E 1; Offset circle center cuts and mills an offset point E 1 and finish mills with the original center: Point E 2 cuts to the tangent point E 2 After off-center circle cuts and circular milling, continue the action 'Another offset Position E 1 'Complete the fine milling operation: the tool and the tool cut the circle from the first offset point to the offset center r 1 and cut the circle to the original center. · 2 moves to the tangent point u 2 and repeats Jing Yao' After continuity, return to the tangent point u 2 and cut the circle with the offset center. The correction can be repeated from the first cutting and milling to the third one for reaming. The second reaming point Q is moved to the third for reaming. The hole R is roughly reamed with the original center r ◦ as the center; R is moved back to the original center r 0; two of the three reaming points are reaming points R, and the shape is the second reaming point. The tool is moved from the original center r 〇 Offset to the first cut 1 / Offset and then use the original 'to form a cut 1 / Offset the overall first level E 1 Milling 1 Cut point U to the original, complete the repeated 2 : Center r 1 Center r The first 2 circles: Center r moves to the final height of / 2 circles 2 at a time; Center r 〇 Preliminary fine milling, perform preliminary fine milling, from the first tangent circle to the tangent point E 2; 0 Cut the circle for the center by cutting sharp; wait for the completion of the first sharp operation 1 from the cutting point E 2 to the first milling process; hold at the third depth S, the second offset point U 1; The eccentricity point U 1 is used as the center to make a tangent circle, and the tangent point U is used for fine milling; to the required accuracy and circular milling of 1/2 circle: continuous from the tangent point u 2 directly Page 15: 2001.06.14.015 _Case No. 89111791_ Year, Month, and Day Amendment_ 6. The scope of the patent application shall be tangentially moved to the second deviation point U 1 with the deviation center r 1 as the center of the circle; return to the original point: again from the second Offset point U 1 moves the tool back to the original center r 0; returns the tool to the starting height ·· moves the tool from the third depth S to the starting height Η; returns to the original height: the tool moves from the starting height 至 to Original height I, the operator who completes the whole. Page 16 2001.06. 14. 016