KR100612037B1 - A auto balance high boing bar - Google Patents

Abstract

The present invention relates to an automatic balancing high speed boring bar, and more particularly, by having a moving chuck and a control unit having a pair of cutting tips embedded in a boring bar fixed to a machine tool for cutting, thereby easily adjusting the movement of the moving chuck in various sizes. It is related to an automatic balancing high speed boring bar which can not only elastically cut the workpiece, but also is cut by a pair of moving chucks, so that vibration can be precisely processed even when machining at high speed.

In order to realize this, the present invention is a boring bar in which one side is fixed to the machine tool and the other side is embedded with a processing tip, the workpiece is cut, the one side of the processing tip is built so that the workpiece is cut on the lower side and formed in a concave-convex shape on the upper side Movement chuck of; A body having a side through which the moving chuck is embedded to reciprocate; A gap adjusting part inserted into an upper end of the body and having a screw shape formed so that the lower end is interlocked with the moving chuck; Hurenji is coupled to the body and fixed at the top of the gap adjusting portion; An adapter coupled to an upper end of the hurenji, the upper side of which is fixed to a machine tool; Characterized in that configured.

Boring Bar, Machining Tip, Moving Chuck, Body, Spacing Unit, Flange, Adapter

Description

Automatic Balancing High Speed Boring Bar {A auto balance high boing bar}             

1 is a cross-sectional view of a conventional boring bar,

2 is a perspective view of one embodiment according to the present invention;

3 is an exploded perspective view of a main part according to the present invention;

4 is a front sectional view of FIG. 2;

5 is a side cross-sectional view of FIG.

Figure 6 is a cross-sectional view of a pair of moving chuck in accordance with the present invention in close contact,

7 is a cross-sectional view of a pair of moving chucks spaced apart in accordance with the present invention.

* Explanation of symbols for the main parts of the drawings

1: processing tip 10: moving chuck

11: Chuck bite portion 12: coupling protrusion

13: tip fixing hole 14: the first stopper

20: body 21: chuck transfer unit

22: Kara 23: Chuck fixed

24: fixing bolt 25: adjustment insert

26: second stopper 30: spacing adjusting unit

31: control projection 32: chuck interlocking portion

33: locking groove 34: adjuster

35: chuck control unit 40: Hurenji

41: body fixing hole 42: adapter fixing hole

43: fixing ring 44: spacing hole

50: adapter

The present invention relates to an automatic balancing high speed boring bar, and more particularly, by having a moving chuck and an adjusting unit having a pair of processing tips embedded in a boring bar fixed and fixed to a machine tool, thereby easily adjusting the distance of the moving chuck in various sizes. It is related to an automatic balancing high speed boring bar which can not only elastically cut the workpiece, but also is cut by a pair of moving chucks, so that vibration can be precisely processed even when machining at high speed.

In general, boring bars are tools that are mounted on a machine tool and used to cut a workpiece while rotating about an axis. Such boring bar has a machining tip embedded inside to cut the workpiece, and chatter vibration due to the natural vibration caused by the distance from the fixed part of the machine tool to the machining tip and the cutting resistance applied to the machining tip by cutting. Is generated. The chatter vibration deteriorates the surface roughness of the workpiece as the ratio (L / D) of the diameter (D) of the boring bar and the protruding length (L) of the processing tip increases, and when excessively exceeds the machining dimension of the workpiece or the boring bar. May break.

Recently, in order to solve the above problems, the boring bar body is used as a material having a high Young's modulus to improve the rigidity of the boring bar, thereby reducing the natural vibration but increasing the chatter vibration because the L / D is increased.

1 is a cross-sectional view of a conventional boring bar, the general boring bar is one chuck 110 is mounted and fixed to the processing tip 100, the chuck 110 is inserted into the reciprocating and reciprocating body 120 and fixed during processing , Hurenji 130 for fixing the body 120 at the top of the body 120, and the adapter 130 is coupled to the flange 130 is formed to be mounted on the machine tool.

However, in the conventional boring bar, when machining the workpiece at high speed, since one processing tip 100 is fixed to the chuck 110, the vibration is increased, thereby causing an eccentricity.

In addition, in the conventional boring bar, only one machining tip 100 is used to cut the workpiece, and thus, when cutting a plurality of workpieces or cutting to various sizes, the cutting tip must be set or replaced separately, thus requiring a long time. There was a problem that the cost is increased.

The present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to provide an easy to adjust the distance of the moving chuck by having a moving chuck and the adjustment unit is built in a pair of processing tips inside the boring bar. The present invention provides a self-balancing high speed boring bar capable of cutting elastically various workpieces as well as cutting a pair of moving chucks to reduce the vibration even at high speed.

In order to achieve the above object, the automatic baling high speed boring bar according to the present invention has one side fixed to a machine tool and the other side of the boring bar in which a work piece is cut and the work piece is cut, so that one side of the work tip is cut in the lower side. A pair of moving chucks built-in and formed in an uneven shape on an upper side thereof; A body having a side through which the moving chuck is embedded to reciprocate; A gap adjusting part inserted into an upper end of the body and having a screw shape formed so that the lower end is interlocked with the moving chuck; Hurenji is coupled to the body and fixed at the top of the gap adjusting portion; An adapter coupled to an upper end of the hurenji, the upper side of which is fixed to a machine tool; Characterized in that configured.

The moving chuck is a chuck bite portion formed with a plurality of screw-shaped unevenness at the top to move in conjunction with the gap adjusting portion, the engaging protrusion projected to be inserted and moved inside the body, and the processing tip is inherently fixed Formed tip is characterized in that the hole formed.

The body is a chuck conveying portion penetrated from one side to the other side so that the coupling protrusion of the moving chuck is inserted, the collar is inserted into one side of the chuck conveying portion so that the moving chuck is fixed, the collar is in close contact with the moving chuck It is characterized in that it consists of a plurality of chuck fixing holes perforated on one side of the chuck conveying portion, a fixing bolt is inserted into the chuck fixing hole to fix the moving chuck, and an adjustment insertion portion is inserted into the gap adjusting portion. .

The interval adjusting part is a control projection portion penetrated through the center to be inserted into the control insertion portion of the body, the chuck interlocking portion formed in a screw shape to be interlocked by inserting the chuck bite portion at the lower end of the control projection portion, and the outer peripheral portion of the adjustment projection portion It characterized in that it comprises a locking groove on the top, the adjuster inserted into the locking groove to indicate the interval of the moving chuck with a scale, and the chuck adjusting unit for gripping so as to rotate by the scale of the adjuster to adjust the interval of the moving chuck.

The Hurenji is characterized in that a plurality of perforated body fixing holes in the inner side to be fixed to the control inserting portion of the body and the outer periphery of the adapter fixing holes are formed so that the adapter is fixed to the outer periphery.

The moving chuck is formed with a first stopper on the outside, the body is characterized in that the second stopper is formed at the lower end so that the moving chuck is not separated from the body.

The Hurenji is characterized in that the fixing ring is formed to be fixed to the gap adjusting portion on the outer periphery, the gap fixing hole is inserted into the bolt so that the fixing ring is compressed to the gap adjusting portion.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a perspective view of one embodiment according to the present invention, Figure 3 is an exploded perspective view of the main components, Figure 4 is a front sectional view of Figure 2, Figure 5 is a side cross-sectional view of FIG.

As shown in Figures 2 to 4, the automatic balancing high speed boring bar of an embodiment according to the present invention is a pair of moving chuck 10 is a machining tip, the body 20 is embedded with the moving chuck 10 And, with the gap adjustment unit 30 to adjust the gap in conjunction with the moving chuck 10, the flange 40 is coupled to the upper end of the body 30, and the adapter 50 formed to be fixed to the machine tool It is composed.

The moving chuck 10 is formed in a pair of one side of the processing tip to be cut to the workpiece to be cut in the lower side, the chuck bite portion formed with a plurality of screw-shaped irregularities on the upper end to move in conjunction with the gap adjusting portion 30 (11), the coupling protrusion 12 protruding in two stages so as to be inserted and moved inside the body 20, and the tip fixing hole (13) formed to be fixed by a bolt at the side in which the processing tip is embedded do.

The body 20 is a chuck transfer portion 21 penetrated from one side to the other side so that the coupling protrusion 12 formed with two stages of the moving chuck 10 is moved, and one side of the chuck transfer portion 21. Plate-shaped collar 22 which is inserted into and fixes the movable chuck 10 and six on one side of the chuck transfer part 21 so that the collar 22 is fixed in close contact with the movable chuck 10. A perforated chuck fixing hole 23, a fixing bolt 24 is inserted into the chuck fixing hole 23 and screwed to fix the moving chuck 10, and the gap adjusting part 30 is inserted therein. The control insert 25 is formed in the columnar shape.

The gap adjusting unit 30 is inserted into the upper end of the body 20 and the lower end is formed in a screw shape so as to interlock with the moving chuck 10 to adjust the distance of the moving chuck 10, the body 20 Centered through the center to be inserted into the control insertion portion 25 of the control projections 31 and the chuck lead formed in the shape of a screw so that the chuck transfer portion 21 is inserted into the lower end of the control projections 31 is interlocked. The eastern 32, the engaging groove 33 having a circular groove formed in the outer peripheral portion of the control projection 31, and inserted into the engaging groove 33, indicating the scale so that the interval between the moving chuck 10 is confirmed The adjuster 34 and the outer circumference portion of the adjuster 34 is formed by the chuck control unit 35 for adjusting the interval of the moving chuck 10 by gripping the portion formed by knurling (rotation). .

The moving chuck 10 is preferably formed to be able to adjust the zero point by removing one of the chucked portion 11 inward from the pair.

The flange 40 has three body fixing holes 41 on the inside so that the control inserting portion 25 of the body 20 is fixed, and four perforated adapter fixing so that the adapter 50 is coupled to the outer circumference. Ball 42 is formed, and the fixing ring 43 is formed so that the gap adjusting portion 30 is fixed to the outer periphery, and the interval fixing hole 44 is inserted into the bolt so that the fixing ring 43 is pressed Additionally formed.

The adapter 50 is perforated on the outer periphery so as to be coupled to the upper end of the flange 40 and the upper side is formed to be fixed to the machine tool.

The moving chuck 10 is formed with a first stopper 14 on the outside, and the body 20 has a second stopper 26 formed at a lower end thereof so that the moving chuck 10 is moved from the body 20. It is formed so as not to deviate.

Looking at the action of the automatic balancing high-speed boring bar according to the present invention having the configuration as described above are as follows.

In Figures 2 to 4, the automatic balancing high-speed boring bar according to the present invention is a pair of moving chuck 10 is inserted into the inside of the body 20, the machining tip 1 is embedded, the body 20 At the top of the) the gap adjusting unit 30 is seated and the gap of the pair of the moving chuck 10 is adjusted, the flange 40 is at the top of the gap adjusting unit 30 is the body 30 Screwed to and the upper end of the flange 40, the adapter 50 is screwed, the adapter 50 is fixed to the machine tool to cut the workpiece.

At this time, the moving chuck 10 has one side of the processing tip 1 is built so that the workpiece is cut in the lower side, the chuck rim portion 11 is formed with a plurality of screw-shaped irregularities on the top is the gap adjusting portion 30 The interlocking projection 12 is protruded in two stages formed at the lower side of the chuck biting portion 11 and is reciprocated by being inserted into the body 20.

In addition, the body 20 is inserted into the chuck transfer portion 21 penetrated from one side to the other side so that the coupling protrusion 12 formed in two stages is reciprocated and plate-shaped so that the moving chuck 10 is fixed. The collar 22 is fixed to the moving chuck 10 by the six fixing bolts 24.

In addition, the gap adjusting unit 30 is the adjustment projection 31 is inserted into the upper end of the body 20, the chuck interlocking portion 32 formed in the shape of a screw on the lower end of the adjustment projection 31 is the moving chuck A chucking portion 11 of 10 is inserted to reciprocate the moving chuck 10.

In addition, the adjuster 34 is inserted into the circular locking groove 33 in the outer circumferential portion of the adjusting protrusion 31 to check the distance between the moving chuck 10 and the scale of the adjuster 34. As a result, the outer circumferential part grips and rotates the chuck adjustment part 35 formed by knurling, thereby easily adjusting the interval of the moving chuck 10.

The flange 40 has the body 20 fixed to three body fixing holes 41 formed therein, and the adapter 50 is coupled to four adapter fixing holes 42 perforated on the outer circumference. In addition, the bolt is inserted into the two interval fixing holes 44 in addition to the outer periphery, the fixing ring 43 formed on the lower side by pressing the gap adjusting portion 30, the interval of the moving chuck 10 After this is adjusted, it remains unchanged.

Figure 6 is a cross-sectional view of a pair of moving chuck in accordance with the present invention, when cutting the workpiece in a narrow gap fixed to the processing tip 1 to the moving chuck 10, the gap adjusting unit When the gripping device 30 is rotated, the chuck interlocking part 32 and the chuck biting part 11 of the gap adjusting part 30 interlock with each other and the pair of the moving chucks 10 are in close contact with each other. The workpiece is to be cut.

7 is a cross-sectional view of a pair of moving chucks according to the present invention spaced apart maximum. When cutting a workpiece having a wide interval, the work tip is fixed to the moving chuck 10, the gap adjusting portion 30 is gripped and rotated in the opposite direction as when cutting the workpiece at a narrow interval of the chuck linkage ( 32) and the chucking portion 11 is interlocked, so that the pair of moving chucks 10 are moved outwards to cut the workpiece at a wide interval, and even at high speed by cutting the workpiece in a pair No vibration is generated.

As those skilled in the art to which the present invention pertains, various permutations, modifications, and changes can be made without departing from the technical spirit of the present invention. no.

As described above, the boring bar according to the present invention is provided with a moving chuck and a gap adjusting part in which a pair of processing tips are built in, thereby easily adjusting the gap of the pair of moving chucks to elastically cut workpieces of various sizes. In addition, since there is a cutting process by a pair of moving chucks, there is an effect that no vibration is generated even at a high speed.

Claims (7)

One side is fixed to the machine tool and the other side is a boring bar in which the workpiece is cut by the built-in processing tip, A pair of moving chucks 10 having one side of the processing tip 1 embedded therein so as to cut the workpiece on the lower side thereof and having an uneven shape at the top; A body 20 having a side through which the moving chuck 10 is embedded to reciprocate; A spacing adjuster 30 inserted into an upper end of the body 20 and having a lower thread shape so as to be interlocked with the moving chuck 10 to adjust a distance of the moving chuck 10; Hurenji 40 is coupled to the body 20 at the top of the spacing adjuster 30 is fixed; As the adapter 50 is coupled to the top of the flange 40, the upper side is fixed to the machine tool; Automatic balancing high speed boring bar, characterized in that configured. The method of claim 1, The moving chuck 10 is protruded to be inserted and moved inside the body 20, the chuck rim portion 11 is formed with a plurality of screw-shaped irregularities on the upper end so as to move in conjunction with the gap adjusting portion 30. Self-balancing high-speed boring bar, characterized in that consisting of the coupling protrusion 12, the tip fixing hole 13 formed to be fixed by the processing tip (1). The method of claim 1, The body 20 is inserted into one side of the chuck transfer portion 21 and the chuck transfer portion 21 penetrated from one side to the other side so that the engaging projection 12 of the moving chuck 10 is inserted and moved A collar 22 having a moving chuck 10 fixed thereto, and a plurality of chucked fixed holes 23 drilled on one side of the chuck transfer part 21 so that the collar 22 is tightly fixed to the movable chuck 10. And a fixed bolt 24 inserted into the chuck fixing hole 23 to fix the moving chuck 10, and an adjustment insert 25 into which the gap adjusting part 30 is inserted and seated. It features automatic balancing high speed boring bar. The method of claim 1, The interval adjusting part 30 is a control projection portion 31 penetrated through the center to be inserted into the control insertion portion 25 of the body 20, and the chucking portion 11 at the lower end of the control projection portion 31. Is inserted into the chuck interlocking portion (32) formed in the shape of a screw so as to interlock and inserted into the circular locking groove (33) and the locking groove (33) on the outer circumference of the control projection (31) of the moving chuck (10). Adjuster 34, which indicates the interval to the scale, and the chuck control unit 35 for adjusting the interval of the moving chuck 10 by gripping so as to rotate by the scale of the adjuster 34 Balancing high speed boring bar. The method of claim 1, The flange 40 has a plurality of body fixing holes 41 perforated therein so that the control insert 25 of the body 20 is fixed to the inside, and a plurality of the adapter 50 is fixed to the outer periphery Self-balancing high speed boring bar, characterized in that the perforated adapter fixed hole 42 is formed. The method according to any one of claims 1 to 3, The moving chuck 10 is formed with a first stopper 14 on the outside, and the body 20 has a second stopper 26 formed at a lower end thereof so that the moving chuck 10 is moved from the body 20. Automatic balancing high speed boring bar, characterized in that formed so as not to be separated. The method according to claim 1 or 5, The flange 40 has a fixing ring 43 formed to fix the gap adjusting unit 30 to an outer circumference, and a gap fixing bolt is inserted so that the fixing ring 43 compresses the gap adjusting unit 30. Automatic balancing high speed boring bar, characterized in that the ball 44 is further formed.

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