KR20100055953A

KR20100055953A - Sheet material down presser and end mill type engraver having thereof

Info

Publication number: KR20100055953A
Application number: KR1020080114868A
Authority: KR
Inventors: 심상기
Original assignee: 심상기
Priority date: 2008-11-18
Filing date: 2008-11-18
Publication date: 2010-05-27

Abstract

The present invention is to engrave letters, figures, etc. on the surface of the thin plate material, to provide a plate material pressing device and end mill engraver equipped with the same so that it can be pressed down so as not to form wrinkles, surrounding the end mill is chucked By installing a plurality of pressing holes on the bottom surface of the surrounding housing so that a predetermined area around the portion to be sculpted from the flat plate material is pressed down and spread out, the flat plate material is in contact with the end mill in the process of processing the flat plate material. The surface is not wrinkled even when subjected to external force, thereby speeding up and speeding engraving work.

Description

Sheet material down presser and end mill type engraver having

The present invention relates to a flat plate pressing device and an end mill engraver equipped with the same, so as to precisely carved in the state of locally pressing the processing site in the lettering of the character on the flat plate with a engraving machine.

CNC end mill engravers are commonly used to engrave figures, characters, etc. on flat materials.

As shown in FIG. 4, the CNC end mill engraver is movable in the XY axis by a Y-axis carrier 6 orthogonally arranged between a pair of X-axis carriers 4 reciprocated along the longitudinal direction of the base 2. The engraving tool (M) chucked to the spindle (S) is rotated at the lower end of the head (10) to be lifted by the Z-axis carrier (8) is a device for cutting and engraving the surface of the workpiece under numerical control.

In the CNC end mill engraver, the spindle has a structure capable of rotating at high speed of 24000 RPM. However, when carving figures, characters, etc. on the surface of a flat plate material, the spindle is usually rotated at 2000 to 3000 RPM in water.

The reason for this is that when the end mill is rotated at high speed in the case of engraving figures, characters, etc. on a thin plate material, the processing portion of the plate material in contact with it forms a bend and cannot be carved precisely.

For this reason, the CNC end mill engraver has excellent mechanical performance, but the engraving process of the plate material can be performed at a remarkably low speed.

End mill engraver, known as Korean Utility Model No. 20-0408433, installs a spring inside the tool to attenuate the external force exerted on the engraving tool by a non-uniform surface of the surface when engraving an uneven surface. Disclosed is a engraving device having a structure that can be moved in the vertical direction.

However, the elastic up-and-down movement of the tool is only effective for the processing of non-flat surfaces and cannot prevent the formation of wrinkles on the surface of thin plate materials.

Therefore, the high speed machining of the plate material still remains a problem to be solved.

The present invention provides a flat plate material pressing device and an end mill engraver having the same, which can be pushed down to prevent wrinkles from being formed on the surface of a thin plate material. The purpose is to significantly improve the speed of engraving thin plate materials.

The present invention embodying the above object is an end mill engraver to engrave figures, characters, etc. on a flat plate material by moving the chucking tool chucked to the spindle in the XYZ direction, end mill press-down to push down the flat plate material during processing It is mounted on the underside of the housing disposed around the chuck of the engraver, and the holder is connected to the spindle bearing for rotatably supporting the chuck in the end mill engraver so as to detach and attach the holder connected through the connecting rod. Can be.

In addition, the present invention is an end mill engraver for carving figures, characters, etc. on a flat plate material by moving the chucking tool chucked to the spindle in the XYZ direction, the pressing sphere for pressing down the flat plate material is placed around the chuck of the end mill engraver It is mounted on the bottom of the housing, and installed so as to detach and attach the holder connected through the connecting rod and the housing around the spindle bearing rotatably supporting the chuck in the end mill engraver, a cushioning means is added to the connecting rod It can also be implemented in the configuration.

In addition, the present invention is an end mill engraver for carving figures, characters, etc. on a flat plate material by moving the chucking tool chucked to the spindle in the XYZ direction, the pressing sphere for pressing down the flat plate material is placed around the chuck of the end mill engraver It is mounted on the bottom of the housing, and installed so as to detach and attach the holder connected through the connecting rod and the housing around the spindle bearing rotatably supporting the chuck in the end mill engraver, a cushioning means is added to the connecting rod On the other hand, it can also be carried out with a configuration in which a dust collecting tube communicated to the dust collector to the outer side of the housing arranged.

In addition, the present invention in the end mill engraver to move the chucking tool chucked to the spindle in the XYZ direction to engrave figures, characters, etc. on the flat plate material, the pressing sphere to push down the flat plate material around the chuck of the end mill engraver It is mounted on the underside of the housing to be disposed, and is installed to detach and attach the holder connected through the connecting rod and the housing around the spindle bearing rotatably supporting the chuck in the end mill engraver, the holder is a cam lever cam The shaft may be tensioned or relaxed so that the diameter thereof is changed and expanded. The buffer rod may be added to the connecting rod, and the dust collector tube may be arranged on the outer side of the housing to communicate with the dust collector.

According to the present invention, since a certain area of the plate material to be sculpted by the end mill is sculpted while being pushed and unfolded by the pressing hole installed on the bottom of the housing, the plate material is not wrinkled on the surface even when the plate material is subjected to external force by contact with the end mill. As a result, the speed and precision of engraving work can be realized.

In addition, the shock absorbing means interposed between the connecting rod connecting the housing and the holder is a flat plate through the pressing hole even if a change in the distance between the housing and the holder occurs while the housing slides the plane of the flat material as the end mill moves in the XY direction. Since the material is pressed down to maintain the unfolded state, there is an effect that the processing of flat plate material whose surface flatness is not precise can be made at high speed.

In addition, the present invention has a structure that can be detached and attached to the holder mounted on the spindle bearing to support the housing, there is also an advantage that can be used as needed.

In addition, the dust generated during the engraving process of the end mill by the dust collecting tube disposed outside of the housing can be easily collected in one place, there is an advantage of preventing the working environment and environmental pollution.

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

1 is a view showing an embodiment of the present invention, it is arranged to surround the surroundings of the engraving tool (M) chucked to the spindle (S) of the engraver, and the ball-shaped pressing locally spread the plate material (SM) by pressing The housing 22 having a plurality of spheres 20 at the bottom thereof and fitted into the outer circumference of the spindle bearing B rotatably supporting the spindle S, and the housing 22 via a connecting rod 24. It consists of a holder 26 located above, and a dust collecting tube 28 disposed on an outer side of the housing 20.

As the plurality of connecting rods 24 connecting the housing 22 and the holder 26 are respectively fitted with a buffer means 30 such as a spring, the housing 22 is always pressed down. As a result, the pressing hole 20 of the bottom surface is in close contact with the flat plate material SM to locally fix the predetermined range W.

For this reason, in the flat plate pressing device of the present invention, even when the end mill M is rotated at a high speed, the flat plate material SM can be precisely carved while being kept on a flat surface.

In the engraving machine equipped with a flat plate pressing device of the present invention to increase the rotational speed of the end mill (M) to the level of 10000 ~ 12000 RPM, even if the flat plate material (SM) is not pushed, the flat surface was maintained as it is, the working speed is a conventional device Compared to 4 times faster.

In addition, the housing 22 was suitable for the rectangular shape forming a space inside, and the inspection window 32 is formed on each of the six outer circumferences of the housing 22 to be mounted around the end mill M and inspection of the engraving process from the outside. To facilitate this.

The flat plate pressing device of the present invention is not limited to the above-described configuration, and the holder 26 may be modified as shown in FIG.

In FIG. 2, the holder 26 has a structure in which the outer circumferential side thereof is opened to have both ends 26a and 26b, and a cam shaft 36 provided with a cam lever 34 at one end is disposed between both ends 26a and 26b. It is arrange | positioned so that it may operate so that it may narrow or widen between the both ends 26a and 26b according to operation of the said cam lever 34. As shown in FIG.

According to the above-described modification, the holder 26 can be easily mounted and detached from the spindle bearing B, so that the work can be made convenient.

In addition, in the flat plate pressing device of the present invention, the shock absorbing means 30 may also be implemented as a ball plunger structure that directly presses the pusher 20 disposed on the bottom surface of the housing 22, as shown in FIG. have.

In this case, the connecting rod 24 disposed between the holder 26 and the housing 22 has a seat 38 on the outer circumference to support the shock absorbing means 30, and the housing 22 has a shock absorbing means ( 30 has a space 40 in which it can be stored.

In this embodiment as well, the plate material SM is in contact with the pressing holes 20 disposed on the bottom of the housing 22 and maintains a close contact with the elastic force of the shock absorbing means 30, while the area of the predetermined range W is local. This fixed state is displaced in the same direction with the movement of the housing 22.

Therefore, even when the surface of the plate material SM is in contact with the end mill (M) that rotates at a high speed, it does not form a bend.

Therefore, in the present invention, the engraving state of the plate material SM is displayed at a precise level even if the rotary speed of the end mill M is greatly increased.

1 is a side cross-sectional view showing one embodiment of a flat plate pressing device according to the present invention in half shown in cross section.

FIG. 2 is a plan sectional view showing some modified examples of the flat plate pressing device shown in FIG. 1; FIG.

Figure 3 is a side cross-sectional view corresponding to Figure 1 another embodiment of a flat plate pressing device according to the present invention.

4 is a perspective view showing the configuration of a conventional CNC end mill engraver;

20: press 22: housing

24: connecting rod 26: holder

28: dust collecting tube 30: buffer means

32: access window 34: cam lever

36: camshaft 38: sheet

40: space

Claims

In the end mill engraver that moves the chucking tool chucked to the spindle in the X-Y-Z direction to engrave figures, characters, etc. on the flat plate material,

Pressing mouth 20 for pressing down the flat plate material (SM) and,

A housing 22 having a plurality of pressing holes 20 on a bottom surface thereof;

A flat plate having a configuration including a holder 26 which is disposed upwardly of the housing 22 via a connecting rod 24 and is fitted to the outer circumference of the spindle bearing B to rotatably support the spindle S. Material presser.

Pressing mouth 20 for pressing down the flat plate material (SM) and,

A holder 26 disposed upwardly of the housing 22 via a connecting rod 24 and fixed to an outer circumference of the spindle bearing B for rotatably supporting the spindle S;

Flat plate material pressing device having a configuration with a shock absorbing means 30 which is inserted into the connecting rod (24) interposed between the housing (22) and the holder (26).

Pressing mouth 20 for pressing down the flat plate material (SM) and,

Shock absorbing means (30) fitted with a connecting rod (24) interposed between the housing (22) and the holder (26);

Flat plate material pressing device is configured to include a dust collector tube 28 which is disposed on the outer side of the housing 20 to communicate with a conventional dust collector.

Pressing mouth 20 for pressing down the flat plate material (SM) and,

One side of the outer periphery is opened to both ends 26a and 26b, and a cam shaft 36 provided with a cam lever 34 at one end is provided between the both ends 26a and 26b, and the connecting rod 24 is interposed therebetween. A holder 26 disposed above the housing 22,

Flat plate material pressing device having a configuration disposed in the outer side of the housing 20, the dust collector tube 28 in communication with the conventional dust collector.

An end mill engraver having a flat plate pressing device as set forth in any one of claims 1 to 4.