CN-122007951-A - Eccentric revolving body turning tool and turning method

CN122007951ACN 122007951 ACN122007951 ACN 122007951ACN-122007951-A

Abstract

The invention relates to an eccentric revolving body turning tool and a turning method, which are characterized in that the tool comprises a chassis (1), a sliding seat (2), a plurality of threaded pins (3) with handles, a plurality of fastening screws (4) and a plurality of pressing plates (5), wherein the chassis (1) is of a step revolving body structure, the chassis (1) is sequentially divided into a polished rod section (11) and a disc (12) from left to right, the polished rod section (11) and the disc (12) are connected together or integrated, the sliding seat (2) is of a combined structure that a rectangular flat plate (21) and a step shaft (22) are connected together, the rectangular flat plate (21) is arranged on the left side, and the step shaft (22) taking the center of the rectangular flat plate (21) as an axis is connected on the right side of the rectangular flat plate (21). The invention can finish the turning of the eccentric revolving body after only one-time clamping and alignment, and the standard is uniform. The invention changes the axle center to process very little, which reduces the error.

Inventors

WEI WENSHUANG
HUANG DASHUN
WANG XINYU
LIU XING
GONG ZIJIE

Assignees

北京新风航天装备有限公司

Dates

Publication Date: 20260512
Application Date: 20260227

Claims (5)

1. The eccentric revolving body turning tool is characterized by comprising a chassis (1), a sliding seat (2), a plurality of threaded pins (3) with handles, a plurality of fastening screws (4) and a plurality of pressing plates (5); The chassis (1) is of a step revolving body structure, the chassis (1) is sequentially divided into a polished rod section (11) and a disc (12) from left to right, the polished rod section (11) and the disc (12) are connected together or are integrated, a polished rod shaft (11) can be clamped by a three-jaw chuck, a T-shaped guide rail groove (13) is formed in the center position of the right end face of the disc (12), the T-shaped guide rail groove (13) penetrates through the circumferential surfaces of two sides of the disc (12), four long round holes (15) are symmetrically formed in four corners of the surfaces of flanges (14) on the two sides of the T-shaped guide rail groove (13) for a fastening screw (4) to penetrate through, two stepped holes matched with threaded pins (3) are formed between the two long round holes (15) on each side, wherein a first pair of stepped holes and a right lower stepped hole are formed in the left side, a second pair of stepped holes are formed in the right side of the lower stepped holes, a corresponding flat plate (21) of the corresponding 4 stepped holes, when two threaded pins (3) pass through the first pair of stepped holes and the second stepped holes, and the central shaft (2) of the two sliding seats (2) are fixed on the same central shaft (2) when the central shaft passes through the first pair of stepped holes (3) and the second threaded pins (2), at the moment, a distance d is arranged between the central axis of the sliding seat (2) and the central axis of the chassis (1), wherein d is a set distance; The sliding seat (2) is of a combined structure that a rectangular flat plate (21) and a step shaft (22) are connected together, the rectangular flat plate (21) is arranged on the left side, the step shaft (22) taking the center of the rectangular flat plate (21) as an axis is connected to the right side of the rectangular flat plate (21), the length of the rectangular flat plate (21) can be exactly inserted into a T-shaped guide rail groove (13) of the chassis (1) and can slide, at least 4 screw holes are uniformly distributed on the table top of the step shaft (22), and each screw hole is used for fastening one pressing plate (5) on the table top by one fastening screw (4); During operation, the eccentric revolving body (8) to be processed is firstly placed on the step shaft (22) of the sliding seat (2), then the flanging of the eccentric revolving body (8) is tightly pressed by at least four fastening screws (4) and four pressing plates (5), then the sliding seat (2) with the eccentric revolving body (8) is installed on the T-shaped guide rail groove (13) of the chassis (1), the position of the sliding seat (2) in the chassis (1) is adjusted, then the sliding seat (2) is fastened on the chassis (1) through the first pair of stepped holes or the second pair of stepped holes on the rectangular flat plate (21) by two threaded pins (3), and then the polished rod section (11) of the chassis (1) is clamped on a machine tool for processing.
2. The eccentric rotary body turning tool as claimed in claim 1, wherein the rectangular flat plate (21) is inserted into the T-shaped guide rail groove (13) at one end and has guide angles at both sides.
3. The turning tool for the eccentric rotary body according to claim 1 or 2, wherein the rectangular flat plate (21) is inserted into the T-shaped guide rail groove (13) first, and one end surface of the rectangular flat plate is provided with an arrow mark consistent with the insertion direction.
4. An eccentric rotary body turning tool as claimed in claim 1, 2 or 3, wherein the two sides of the first pair of stepped holes on the flange (14) on the chassis (1) are marked with "positive" marks, and the two sides of the second pair of stepped holes on the flange (14) on the chassis (1) are marked with "offset" marks.
5. A method for turning an eccentric rotary body by using the turning tool for the eccentric rotary body as claimed in claim 4, characterized by comprising the following steps, Firstly, selecting a pipe blank to be clamped on a three-jaw chuck of a lathe, roughly turning, semi-finely turning and finely turning the far end of the blank, and then machining the inner and outer circles of an end A of an formed eccentric rotary body (8), wherein the outer circle Zhou Chexiao of the end A is in place, the maximum turning radius allowance of an axis of the end A of the machined eccentric rotary body (8) is 0.3-0.5 mm, roughly turning the outer circle of the end B of the other side of the machined eccentric rotary body (8), the maximum turning radius allowance of the axis of the end A of the machined eccentric rotary body (8) is 0.3-0.5 mm, roughly turning the inner circle of the end B of the machined eccentric rotary body (8), removing the large allowance of the end B of the machined eccentric rotary body (8) as far as possible according to the size and turning limit of a model, removing the outer circumference of the end A of the machined eccentric rotary body (8) to the single-side allowance of the position, and removing the workpiece after turning; The method comprises the steps of clamping a polish rod section on the left side of a chassis by a lathe three-jaw chuck, inserting a rectangular flat plate of a sliding seat (2) into a T-shaped guide rail groove (13) of the chassis (1) according to the direction indicated by an arrow, enabling 4 fastening screws (4) to pass through 4 long round holes (15) on the surface of the chassis (1) and be screwed with 4 threaded holes around a rectangular flat plate (21) of the sliding seat (2) temporarily, inserting a threaded pin (3) with a handle into 2 positive step pin holes on the chassis (1) and then inserting two pin holes at corresponding positions on the sliding seat (2) for positioning, then rotating a triangular mounting handle of the head of the threaded pin to fasten the triangular mounting handle and the base, screwing down the 4 fastening screws to fasten the chassis (1) and the sliding seat (2), sleeving an inner hole at the end A end of an eccentric rotary body (8) detached in step one on the rightmost short shaft of the sliding seat (2), pressing the flanging at the end of the eccentric rotary body (8) by 4 fastening screws (4) and then passing through long round holes (15) on the pressing plate (5) at the middle end of the eccentric rotary body (8) and then screwing down the end of the eccentric rotary body (4) at the middle end of 0.005mm after the eccentric rotary body (8) is screwed down and the end of the eccentric rotary body (4) is screwed down at the end of 0mm after the eccentric rotary body (2) is screwed down and the eccentric rotary body (4) is screwed down and the end is screwed down at the end of the eccentric rotary body (4) and is screwed down, the maximum turning radius allowance is 0.3-0.5 mm based on the axis of the end A, and the minimum turning radius allowance is 0.3-0.5 mm based on the axis of the end A, the inner circle allowance of the end B of the rough turning eccentric rotary body (8) is continuously removed, and the outer circle allowance of the end A of the rough turning eccentric rotary body (8) is in place; Step three, after the step two is finished, the procedure is stopped, the main shaft is stopped, 2 threaded pins (3) with handles are hung by hands, then 4 fastening screws on the chassis (1) are slightly unscrewed, the sliding seat is pushed to slide along the arrow direction for approximately d distance, then the sliding seat is slightly adjusted to ensure that the 2 threaded pins (3) with handles are inserted into 2 step pin holes on the chassis (1) with offset, then the 2 pin holes at corresponding positions on the sliding seat are continuously inserted for positioning, then the triangular mounting handle of the head part of the threaded pins is rotated to fasten the triangular mounting handle and the base together, and then the 4 fastening screws (4) are screwed to fasten the chassis (1) and the sliding seat (2) together; And step four, rotating a main shaft, starting a program, semi-finish turning, finish turning the end face of the end B of the eccentric rotary body (8) and turning the inner circle and the outer circle of the eccentric rotary body (8) in place, and finishing the turning work of the eccentric rotary body (8) completely.

Description

Eccentric revolving body turning tool and turning method Technical Field The patent relates to a machining method, in particular to an eccentric rotary body turning tool and a turning method. Background In production practice, the eccentric rotary body is often required to be firstly held by a three-jaw chuck to clamp a special tool for turning the inner circle and the outer circle of one side of the eccentric rotary body, and then the eccentric rotary body is replaced by a four-jaw chuck with an eccentric adjustment function, matched with another special tool for eccentric adjustment, and then turned into the inner circle and the outer circle of the other side of the eccentric rotary body. Because the common numerical control lathe has no C-axis positioning function, the eccentric adjustment process after four claws are replaced is very difficult, the eccentric amount can be roughly estimated only by adopting a dial indicator, the eccentric amount is difficult to accurately measure on machine, and the possibility of repairing is avoided once the turning is finished and the out-of-tolerance is detected by three coordinates, so that the method for turning the eccentric revolving body has the advantages of low cost, easiness in operation and accurate eccentric amount control. Disclosure of Invention In order to solve the difficult problem of turning an eccentric rotary body, the invention provides a turning tool and a turning method of the eccentric rotary body. The eccentric revolving body turning tool is characterized by comprising a chassis 1, a sliding seat 2, a plurality of threaded pins 3 with handles, a plurality of fastening screws 4 and a plurality of pressing plates 5; The chassis 1 is of a step revolving body structure, the chassis 1 is sequentially divided into a polished rod section 11 and a disc 12 from left to right, the polished rod section 11 and the disc 12 are connected together or integrated, a polished rod shaft 11 can be clamped by a three-jaw chuck, a T-shaped guide rail groove 13 is formed in the center position of the right side end surface of the disc 12, the T-shaped guide rail groove 13 penetrates through the circumferential surfaces of two sides of the disc 12, four long round holes 15 are symmetrically formed in four corners of the surfaces of flanges 14 on two sides of the T-shaped guide rail groove 13 and are used for a fastening screw 4 to penetrate through, two stepped holes matched with a threaded pin 3 with a handle are formed in the surfaces of the flanges 14 on two sides, wherein the left upper stepped hole and the right lower stepped hole are a first pair of stepped holes, the left lower stepped hole and the right upper stepped hole are a second pair of stepped holes, 4 corresponding stepped holes are formed in the rectangular flat plate 21 of the corresponding sliding seat 21, when the two threaded pins 3 with the handle fix the sliding seat 2 through the first pair of stepped holes, the central shaft of the sliding seat 2 and the central shaft of the chassis 1 are on the same stepped line, and when the two threaded pins 3 with the central shaft of the two threaded pins with the handle are in the same distance with the central shaft of the sliding seat 2 and d is not set between the central shaft of the sliding seat 2 and the central shaft 1 and the central shaft of the sliding seat 2; The sliding seat 2 is a combined structure formed by connecting a rectangular flat plate 21 and a step shaft 22, the left side of the sliding seat is provided with the rectangular flat plate 21, and the right side of the rectangular flat plate 21 is connected with the step shaft 22 taking the center of the rectangular flat plate 21 as an axis, wherein the length of the rectangular flat plate 21 can be just inserted into a T-shaped guide rail groove 13 of the chassis 1 and can slide; During operation, the eccentric revolving body 8 to be processed is firstly placed on the step shaft 22 of the sliding seat 2, the flanging of the eccentric revolving body 8 is pressed by at least four fastening screws 4 and four pressing plates 5, then the sliding seat 2 with the eccentric revolving body 8 is installed on the T-shaped guide rail groove 13 of the chassis 1, the position of the sliding seat 2 in the chassis 1 is adjusted, then the sliding seat 2 is fastened on the chassis 1 by two threaded pins 3 with handles through a first pair of stepped holes or a second pair of stepped holes on the rectangular flat plate 21, and then the polished rod section 11 of the chassis 1 is clamped on a machine tool for processing. The rectangular flat plate 21 is inserted into the two sides of one end of the T-shaped guide rail groove 13 first. The rectangular flat plate 21 is inserted into one end surface of the T-shaped guide rail groove 13 first, and the arrow mark consistent with the insertion direction is formed on the end surface. The two holes of the first pair of stepped holes on the two side flanges 14 on