KR20040096947A - A mirror edge mill - Google Patents

Abstract

PURPOSE: A mirror edge bevelling machine is provided to improve cutting efficiency by performing cutting working at the outermost end of a shaft and reducing cutting resistance and load. CONSTITUTION: A mirror edge bevelling machine is composed of a shaft(30) receiving rotary force from a motor(10) and having a tool holder(31), a bracket(50) for supporting the shaft, a regulator(60) movably coupled to the bracket, a guide table(70) having a rectangular space formed by guide surfaces(71,72), and a V-block(80) mounted to the guide table and having a rectangular guide space and a through hole. A cutting tip(40) is mounted to the tool holder. The center line of the rectangular space is parallel to the center line(33) of the shaft so that the cutting working of the cutting chip is performed at the outermost end of the shaft.

Description

Mirror Chamfering Machine {A MIRROR EDGE MILL}

The present invention relates to a chamfering machine, and in particular, the chamfering cutting of the work piece of the cutting tip is made at the outermost end in the longitudinal direction of the shaft to significantly reduce the cutting load and cutting resistance to significantly improve the cutting quality, Accordingly, the chamfering surface is processed into a mirror surface having a high surface degree, and remarkably improves the overall quality of the workpiece.

In general, the chamfering work is to chamfer sharp edges of steel, nonferrous metals, and resins, and is usually performed as the final processing process of the product. Care is taken to obtain a mirror surface.

7 is a partial cross-sectional view of a hand chamfer of the prior art, Figure 8 is a plan view of Figure 7, Figure 9 is a perspective view of a guide table of the prior art.

As shown in FIGS. 7 to 9, the conventional hand chamfer 100 includes an electric motor 110, bevel gear sets 121 and 122 and driven bevel gears 122 that transmit rotational force of the electric motor to a shaft. And a shaft 130 in which the cutting tip 140 is insert-mounted into the tool holder 131, the housing 125 of the bevel gear set, and the housing 125, and the shaft 135 supports the bearing 135. The bracket 150, the adjuster 160 is coupled to the bracket so as to be displaceable, the tool holder is accommodated and mounted on the guide table 170, the guide table 170 for mounting the block and the workpiece It is composed of a V-block 180 for receiving guide.

The guide table 170 has a right angled space portion 173 for mounting the V-block 180, and a handle 190 is provided at one side. The forming direction of the right-angle space portion 173 for the V-block mounting formed on the guide table 170 determines the installation direction of the V-block 180 and the cutting tip 140 for the workpiece 2 guided thereto. It is an important environment to set cutting relationship of).

The V-block 180 mounted on the rectangular space portion 173 is a rectangular body having a “b” shaped cross section in which a rectangular guide space 183 is configured to guide the chamfered corners of the workpiece 2. The penetrating portion 186 is formed to expose the cutting tip 140 to perform chamfering.

Further, the adjuster 160 adjusts the position on the bracket 150 to adjust the position of the guide table 170, and consequently to adjust the chamfering dimension of the workpiece (2).

In addition, the cutting tip 140 is usually formed in a rhombus shape and the cutting edge is mounted to be inclined at 45 degrees with respect to the centerline 133 of the shaft.

The operation of the chamfering machine having such a configuration is that the rotational force of the motor 110 is reduced and transmitted to the shaft 130 as the rotational direction is changed through the bevel gear sets 121 and 122, and the cutting tip 140 mounted to the tool holder 131. Is rotated, and the workpiece 2 guided to the guide table 170 and the V block 180 is exposed by the cutting tip 140 exposed through the through part 186 formed in the V block 180. Chamfering takes place.

However, the above-described prior art had the following problems.

As shown in the plan view in FIG. 10A and the cross-sectional view taken along line BB of FIG. 10A in FIG. 10B while the cutting tip 140 is mounted as described above, the center line 174 of the rectangular space portion 173 of the guide table 170 is shown. ) Is installed at 45 degrees with respect to the centerline 133 of the shaft so as to be orthogonal to the side 141 of the cutting tip 140, and thus, the edge of the workpiece 2 through the V-block 180 guided thereto. As the center line 2a is orthogonal to the center of the square side 141, cutting is performed.

As such, since the chamfering process is performed at the center portion 141c (see FIG. 10C) of the side, the load and resistance acting on the cutting tip 140 become very large, and thus, the shaking phenomenon occurs in the cutting tip 140, thereby chamfering the machining. Since the surface 2d is formed roughly, there is a problem of lowering the overall quality of the workpiece. Strong materials such as SKD11, SKS, hIS, SUS, etc., having strong materials are difficult to cut.

In addition, since the cutting is performed on the central portion 141c of the straight side of the cutting tip in a 45 degree inclined plane with respect to the centerline 133 of the shaft, the cutting resistance is further increased, the shaking of the cutting tip is generated, and the machining surface is rough. Will be.

In addition, the handle 190 provided on the guide table 170 is to press the pressure so that the chamfer is not spaced apart from the workpiece (2), one hand to the motor 110 that is the main body side of the chamfer during operation The hand is to hold the handle 190, the hand holding the handle leads to the work by applying a force to the workpiece (2) side. When the processing position of the workpiece is changed, the hand holding the handle is also changed from the left hand to the right hand or vice versa to change the installation direction of the handle 190. As described above, the handle 190 is the guide table 170. In order to change the installation direction of the handle by being fixed to one side, there was a need to remove the entire guide table 170 and then reassemble by changing the direction.

In addition, the adjuster 160 is provided with an eccentric cam and a fixing bolt for fixing it has a problem that the adjustment work is cumbersome.

The present invention has been made to solve the above problems,

It is an object of the present invention that the cutting performance of the cutting tip is made at the outermost end in the longitudinal direction of the shaft, thereby significantly reducing the cutting load and the cutting resistance, thereby dramatically improving the cutting quality of any workpiece. Accordingly, the chamfering surface is processed into a mirror surface having a high surface degree to significantly improve the overall quality of the workpiece, while providing a mirror chamfering machine to facilitate work to improve workability.

It is another object of the present invention to provide a mirror chamfer that makes it easy to change the handle direction in a hand chamfer.

Still another object of the present invention is to provide a mirror chamfer that facilitates position adjustment of an adjuster for determining chamfering dimensions.

1 is a partial cross-sectional view showing the configuration of an embodiment according to the present invention

2 is a plan view of FIG. 1

3 is a partial exploded view of FIG.

4 is a perspective view of a guide table according to the present invention;

5A is a cross-sectional view showing a cutting relationship between a cutting tip and a workpiece according to the present invention;

FIG. 5B is a cross-sectional view taken along the line A-A of FIG. 5A

Figure 5c is a perspective view showing the cutting performance position of the cutting tip according to the present invention

Figure 6 is a block diagram showing a cutting tip of another embodiment according to the present invention

7 is a partial cross-sectional view of the prior art

8 is a plan view of FIG.

9 is a perspective view of a guide table according to the prior art

10A is a plan view showing a cutting relationship between a cutting tip and a workpiece according to the prior art;

10B is a cross-sectional view taken along the line B-B in FIG. 10A.

10c is a perspective view showing a cutting performance point of the cutting tip according to the prior art

* Explanation of symbols for the main parts of the drawings

1: Mirror Chamfering Machine According to the Present Invention 2: Workpiece

2a: corner center line of the workpiece 10: electric motor

21,22: Bevel Gear 30: Shaft

31: tool holder 33: shaft centerline

40: cutting tip 41c: cutting performance point

50: bracket 51: stopper protrusion

60: bracket 61: screw portion

70: guide table 71, 72: right angle guide surface

73: right angle space portion 74: center line of right space portion

75: stopper through hole 76: incision

77: clamping screw 78: handle installer

79: V block fixing portion 80: V block

84: center line of the V-block right angle space 90: handle

100: chamfer of the prior art

Mirror chamfering machine according to the present invention to achieve the above object,

One or more cutting tips are mounted on a tool holder formed on one side while receiving the electric motor rotational force, and a bracket supporting the shaft, an adjuster coupled to the bracket so as to be displaceable, and the tool holder is accommodated and mounted on a block. A guide table having a right angled space portion formed by a right angled guide surface for mounting, a right angled guide space formed at two orthogonal surfaces formed on the guide table to receive a workpiece, and a through portion for exposing a cutting tip. In the chamfering machine comprising a V-block,

In order to perform cutting of the cutting tip at the outermost end in the longitudinal direction of the shaft, the centerline of the perpendicular space portion of the V-block is centered on the shaft centerline so that the chamfered corner centerline of the workpiece is parallel to the shaft centerline of the shaft. It is characterized in that the parallel to the installation.

The center line of the perpendicular space portion of the V block is eccentrically formed to one side from the center line of the shaft.

In addition, the center line of the perpendicular space portion of the guide table is parallel to the center line of the shaft and eccentrically formed on one side.

In addition, the bracket is provided with a stopper protrusion on one side.

The guide table has a through hole corresponding to the stopper protrusion is formed on one side, the other side of the through hole is cut and screw-clamped, the handle installation hole is formed to face in both directions perpendicular to the straight line connecting the through hole and the incision is formed, It is preferable that the V-block fixing part is formed.

In addition, the adjuster is preferably screwed with the bracket.

In addition, the cutting tip may be formed in a disc shape.

Hereinafter, an embodiment of a mirror chamfering device of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a partial cross-sectional view showing the configuration of an embodiment according to the invention, Figure 2 is a partial plan view of Figure 1, Figure 3 is a partial exploded view of Figure 2, Figure 4 is a guide table 70 of an embodiment according to the present invention Perspective view.

As shown in Figures 1 to 4, the mirror surface chamfer 1 according to the present invention,

The motor 30 receives the rotational force deceleratingly transmitted to the tool holder 31 formed on one side, the shaft 30 is mounted with one or more cutting tips 40, the bracket 50 for bearing the shaft 30, the The guide 60 is accommodated to the bracket 50 to be displaceable, the tool holder 31 is received, the right angle guide portion 71, 72 is formed by the right angle guide surface 71, 72 for mounting the block Perpendicular guide space 83, which is mounted on the table 70 and the guide table 70, and formed by two orthogonal surfaces 81 and 82 for receiving and guiding the workpiece, and a through part for exposing the cutting tip. In the chamfering machine including a V-block 80 having a 86 formed therein, the cutting operation of the cutting tip 40 is performed at the outermost end in the longitudinal direction of the shaft 30, so that the shaft 30 From the shaft center line 33 of) and the chamfered edge center line 2a of the workpiece 2 The center line 84 of the right-angle space 83 of the V-block 80 is installed in parallel with the shaft center line 33 so as to be located in parallel.

Here, the center line 84 of the perpendicular space portion of the V-block 80 is eccentrically formed to one side from the center line 33 of the shaft. The orthogonal space center line 84 of the V block 60 may be eccentric about 10 mm from the center line 33 of the shaft 30.

The two orthogonal surfaces 81 and 82 of the V-block 80 are assembled by two members, and the width of the surface positioned outwardly of the guide table among the two orthogonal surfaces is larger than the width of the surface located inward. This is preferred.

In addition, the center line 74 of the perpendicular space portion of the guide table 70 is preferably parallel to the center line 33 of the shaft and eccentrically formed on one side.

5A is a plan view showing a cutting relationship between the cutting tip 40 and the workpiece 2 according to the present invention, FIG. 5B is a cross-sectional view taken along line AA of FIG. 5A, and FIG. 5C is a cutting tip 40 according to the present invention. A perspective view showing the cutting performance position. 5A to 5C, when the edge center line 2a of the workpiece 2 is set in parallel from the shaft center line 33, the cutting performance point 41c of the cutting tip 40 is changed to the shaft ( 30) at the outermost end in the longitudinal direction. In other words, the lozenge cutting tip 40 is made at the vertex thickness portion of the cutting tip (see FIG. 5C), not at the center of the square side 41.

In addition, since the cutting operation is performed at the outermost tip of the cutting tip 40, the cutting pressure applied to the cutting tip 40 is generated in a linear direction with respect to the shaft center line 33, and thus the cutting resistance to the cutting tip 40 is reduced. The load is significantly reduced and stable rotation is performed so that no shaking phenomenon occurs.

In other words, in view of the vertically oriented shaft 30, the prior art is that the cutting is performed on the side of the workpiece, on the side of the workpiece, the present invention is the cutting at the top, the bottom of the workpiece By doing so, the shaking phenomenon does not appear.

Therefore, the chamfering cutting surface 2c is processed into an extremely fine mirror surface. This processing result shows that the difference in the surface degree is actually as large as, for example, the difference between burlap and silk, when compared with the processing surface of the prior art (see 2d in FIG. 10B).

In addition, the eccentric space center line 84 of the V-block 80 is eccentrically formed from the shaft center line 33. Among the plurality of cutting tips 40 radially mounted to the toll holder 31, other cutting operations are being performed. The tip is to avoid contact with the workpiece. As such, when the eccentricity is not formed, another cutting tip following the cutting tip in the cutting operation may come into contact with the workpiece, which causes vibration.

The cutting tip 40 may be formed in a disk shape, as shown in FIG. Such a disk-shaped cutting tip (40A) can utilize the entire circumference of the circumference corresponding to the thickness portion as the cutting performance point (41c). That is, the disk-shaped cutting tip 40A can be used continuously by changing its position as it rotates when worn, and the service life is remarkably doubled compared to the diamond cutting tip which can change the cutting position only four times. It can be tightened afterwards, so it is easy to handle.

On the other hand, the bracket 50 is provided with a stopper protrusion 51 on one side. The guide table 70 has a through hole 75 corresponding to the stopper protrusion 51 on one side, and the other side of the through hole 75 is cut and clamped by a screw 77, and the through hole 75 and the incision are cut. The handle mounting holes 78 are formed to face each other in a direction perpendicular to the straight line connecting the parts 76, and the V block fixing part 79 is preferably formed.

The handle installation hole 78 provided in the guide table 70 may be formed as a screw hole.

Such a configuration is that the handle installation hole 78 is formed in both directions and the handle 90 can be arbitrarily installed on either side of the handle installation hole 78 formed in both directions when changing the guide table 70 according to the work situation Leave it as it is, only by changing the handle 90 so that the work direction can be easily changed.

On the other hand, the adjuster 60 may be screwed with the bracket 50. A screw 61 is formed on the corresponding outer circumference of the bracket 50 and the inner circumferential surface of the adjuster 60, and a scale 63 is displayed on the outer circumferential surface of the adjuster 60. This configuration is a simple configuration in which the linear movement is made by the screw coupling rotation, the position adjustment is made, the position of the guide table 70 and the chamfering cutting dimensions of the workpiece is determined according to the adjustment distance.

As described above, the mirror surface chamfering machine 1 according to the present invention is the workpiece 2 of the cutting tip 40 because the center line 74 of the V-block is eccentrically installed from the center line 33 of the shaft. Chamfering cutting is performed at the outermost end of the shaft in the longitudinal direction, and the cutting load is dramatically reduced, thereby reducing the vibration of any material and significantly improving the cutting quality.

In addition, the cutting load and resistance is dramatically reduced in this way the operator is not forced to significantly improve the workability.

It will be appreciated by those skilled in the art that the present invention is equally applicable to table chamfers as well as hand chamfers.

In the above, preferred embodiments of the present invention have been described with reference to the accompanying drawings. Here, the terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, but should be interpreted as meanings and concepts corresponding to the technical spirit of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

As described in detail above, the mirror chamfering machine according to the present invention,

Cutting performance of the cutting tip on the workpiece is performed at the outermost end in the longitudinal direction of the shaft, which significantly reduces the cutting load and cutting resistance, thereby dramatically improving the cutting quality. While being processed to significantly improve the overall quality of the product to be processed, there is an effect of facilitating work and improving workability.

In addition, there is an advantage that can easily change the direction of the hand chamfering handle.

In addition, it is easy to adjust the position of the adjuster for determining the chamfering dimension.

Claims (7)

The motor 30 receives the rotational force deceleratingly transmitted to the tool holder 31 formed on one side, the shaft 30 is mounted with one or more cutting tips 40, the bracket 50 for bearing the shaft 30, the Adjuster 60, which is coupled to the bracket 50 so as to be displaceable, the tool holder 31 is received, the guide is formed at right angled space portion 73 by the right angle guide surface 71, 72 for mounting the block Perpendicular guide space 83, which is mounted on the table 70 and the guide table 70, and formed by two orthogonal surfaces 81 and 82 for receiving and guiding the workpiece, and a through part for exposing the cutting tip. In the chamfering machine which comprises the V-block 80 in which the 86 is formed, In order to perform cutting of the cutting tip 40 at the outermost end in the longitudinal direction of the shaft 30, the chamfered edge center line 2a of the workpiece 2 is parallel to the shaft center line 33. Mirror surface chamfering, characterized in that the center line (84) of the right-angle space (83) of the V-block 80 is installed in parallel to the shaft center line (33). The method of claim 1, Orthogonal space portion center line 84 of the V-block is a mirror chamfering, characterized in that it is installed eccentrically to one side from the center line (33) of the shaft. The method of claim 1 Orthogonal space portion center line 74 of the guide table 70 is mirror surface chamfering, characterized in that formed parallel to the center line 33 of the shaft and eccentric to one side. The method of claim 1, The bracket 50 is provided with a stopper protrusion 51 on one side. The guide table 70 has a through hole 75 corresponding to the stopper protrusion 51 on one side, and the other side of the through hole 75 is cut and clamped by a screw 77, and the through hole 75 and the incision are cut. Mirror mounting surface 78, characterized in that the handle mounting hole 78 is formed in opposite directions perpendicular to the straight line connecting the portion 76, the V-block fixing portion (79) is formed. The method of claim 1, The adjuster 60 is mirror chamfering, characterized in that screwed with the bracket (50). The method of claim 4, wherein The handle installation hole 78 provided in the guide table 70 is mirror surface chamfering, characterized in that formed by a screw hole. The method of claim 1, The cutting tip 40 is mirror chamfering, characterized in that formed in a disc shape.