KR200206749Y1 - Super precision lathe - Google Patents

Abstract

The present invention relates to an ultra-precision lathe capable of feeding the spindle head in the Z-axis direction and the tool bar in the X-axis direction to improve machining precision and minimizing the shaking during the transfer of the spindle head and the tool post. The configuration is as follows.

The present invention is composed of an X, Z axis bed mounted in the X, Z axis direction and a tool bar that is mounted on the upper side of the X axis bed and slides and a main shaft mounted on the upper side of the Z axis bed. Between the upper side of the Z-axis bed and the lower side of the tool bar and the main shaft is equipped with a sliding table having a close inclined surface on both sides, and the upper side of the X, Z-axis bed is formed with a guide having inclined surfaces on both sides, the lower portion of the sliding table is mounted. It is characterized by.

Description

Super precision lathe}

The present invention relates to an ultra-precision lathe that can increase the processing precision, and more specifically, to improve the processing precision by allowing the spindle head to be transferred in the Z-axis direction and the tool bar to be transferred only in the X-axis direction, The present invention relates to an ultra precision lathe capable of minimizing shaking during transfer.

In general, a lathe is composed of a spindle head on which a workpiece is mounted and rotated, a tool bar moved in the Z-axis direction through a bed mounted in front of the spindle head, and a transport bar mounted on the upper side of the tool bar and transported in the X axis. Will be. In addition, a bite for processing a workpiece is fixed to the upper side of the transfer table.

In particular, the main spindle is rotated through the main shaft motor, the tool post is rotated through the Z-axis servomotor mounted on one side of the bed, while the feed post is transferred through the X-axis servomotor mounted to the rear of the tool bar.

Therefore, the workpiece is processed by operating the X, Z axis servomotor while operating the spindle motor to rotate the workpiece fixed in front of the spindle.

In other words, in the lathe, the workpiece is rotated and the bite is transferred to the X and Z axes to perform the cutting operation.

However, the bite is transferred to the Z axis through the tool bar and is transferred to the X axis through the feed bar, but when the tool bar is transferred to the Z axis, the Z axis affects the X axis of the feed bar, so that the Z axis And the X-axis will be slightly inclined.

Therefore, in the conventional lathe, there is a problem that machining of parts (precision industrial parts, electronic parts, medical parts, etc.) having high precision is impossible due to the above phenomenon.

In addition, when the tool post and the transfer table is transferred at the same time in progress, the tool post receives the machining resistance in the X-axis direction as well as the Z-axis, so that the sliding part of the upper bed is easily worn and the precision of the lathe is also reduced.

The present invention is designed to solve the above problems, by providing a lathe capable of transferring the bite only in the X-axis direction and the main axis in the Z-axis, to increase the precision of the X-axis and Z-axis to increase the precision parts It aims to enable the processing of (precision industrial parts, electronic parts, medical parts).

In addition, the X, Z-axis bed is installed separately from each other, so that the transfer of the X, Z-axis does not interfere with each other, there is also an object that can prevent the occurrence of errors caused by the conventional stack assembly of the X, Z-axis.

On the other hand, when the tool post and the headstock is transported by preventing the shaking through the own load of the tool post and the headstock, it is also intended to have the purpose of preventing vibration of the workpiece or tool during machining.

The present invention for achieving the above object, is mounted on the upper side of the X, Z-axis bed and the X-axis bed mounted in the X, Z-axis direction sliding and mounted on the upper side of the tool bar and Z-axis bed sliding Comprising a main shaft, between the upper side of the X, Z-axis bed and the lower side of the tool bar and the main shaft is equipped with a sliding table having a close inclined surface on both sides, the upper side of the X, Z axis bed is formed with a guide having inclined surfaces on both sides And the lower part of the sliding table is mounted.

1 is a front view showing the ultra-precision lathe according to the present invention.

Figure 2 is a plan view showing a high precision lathe according to the present invention.

3 is an enlarged schematic view of a cross-sectional view taken along a line A-A and part B of FIG.

Explanation of symbols for main parts of the drawings

1: X axis bed

11: X axis servomotor

2: Tool stand

3: Z axis bed

31: Z axis servomotor

4: headstock

41: spindle motor

42: Chuck

5: Sliding table

51: inclined protrusion

511: outer inclined surface, 512: reverse inclined surface

6: guide

61: slope

62: horizontal groove

63: horizontal section

7: Bracket

8: inclined bushing

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

1 is a front view showing a shelf of the present invention, Figure 2 is a plan view showing a shelf of the present invention, the configuration thereof is as follows.

It is mounted in the X-axis direction, and the X-axis bed (1) on which one end of the X-axis servo motor 11 is mounted, and one end of the X-axis bed is mounted in the Z-axis direction, and one end is Z-axis servo motor. Z-axis bed (3) is mounted, the tool is mounted on the upper side of the X-axis bed 11, slides in the X-axis direction, the tool (T) is mounted toward the Z-axis bed (3) It is mounted on the table 2 and the upper side of the Z-axis bed (3) and slides in the Z-axis direction, the main shaft motor 41 is mounted at one end and the chuck 42 is fixed to the other end is fixed to the workpiece (W) It is composed of a headstock (4).

Therefore, in the case of operating the precision lathe configured as described above, the workpiece W is first fixed to the chuck 42 of the headstock 4 and then the main shaft motor 41 is operated.

Next, by operating the X, Z-axis servomotors (11, 31) through the servo driver in the state that the workpiece is rotated as described above, the tool post 2 is moved along the X axis, the main shaft (4) By being transported along the Z axis, the bite mounted on the tool post 2 processes the work W fixed to the chuck 42.

3 is a view showing the mounting state of the sliding table according to the present invention, that is, an enlarged cross-sectional view of the AA line and part B of FIG. 1A, and more specifically, the installation state of the tool post 2 and the main shaft 3. The explanation is as follows.

Between the upper side of the X-axis bed (1) and the lower side of the tool post (2) is mounted a sliding table (5), the upper end of which is fixed to the tool post (2), the upper side of the Z-side bed (3) and the Between the lower side of the main shaft 4, the sliding base 5 is fixed to the main shaft 4 is mounted.

And the upper side of the X, Z-axis bed (1, 3) guides are formed on both sides of the inclined surface 61, the horizontal groove portion 62 in the center and the horizontal portion 63 on the upper end of both inclined surface 61, respectively (6) is provided.

In addition, an inclined protrusion 51 having an outer inclined surface 511 in close contact with the inclined surface 61 is formed at both lower sides of the sliding table 5, and is formed at an upper end of the outer inclined surface 511 symmetrically formed at both sides. Inversely inclined reverse inclined surface 512 is formed, the outside of the reverse inclined surface 512 is fixed to the horizontal portion 63 of the guide 6, the bracket 7 is in close contact with the reverse inclined surface 512 ) Is installed.

In addition, a reverse inclined surface 71 is formed on the inside of the bracket 7, and in the inside of the reverse inclined surface 71 is moved in an oblique direction by a set screw S, and an inner surface thereof is inverted inclined surface of the sliding table 5. The inclined bushing 8 in close contact with 512 is mounted.

Therefore, the inclined protrusions 51 formed on both lower sides of the sliding table 5 configured as described above and the guides 6 formed on the upper sides of the X and Z axis beds 1 and 3 are assembled in close contact with each other. .

Therefore, the sliding table 5 is fixed to the lower portion of the tool post 4 and the main shaft 4, the heavy load itself, the inclined protrusion 51 formed on both lower sides of the sliding table (5) By inserting in the form of a wedge in the guide 6 formed on the upper side of the X, Z-axis beds (1, 3), it is possible to sufficiently offset the processing resistance and shaking generated during processing.

In addition, through the bracket 7 surrounding the upper side of the inclined protrusion 51, the above-described processing resistance and shaking can be suppressed to the maximum.

The present invention as described above has the effect of providing a machine tool capable of processing high-precision parts by increasing the feeding accuracy of the X-axis and the Z-axis by allowing the main shaft to be transported and the tool post to be transported only in the X-axis direction. It is.

In addition, it has the effect of maximizing the processing accuracy by preventing the occurrence of errors due to the conventional laminated assembly of the X, Z axis.

On the other hand, by preventing the shaking of the workpiece or tool during the transfer according to the processing, it is to have the effect of solving the vibration which is the biggest problem in the machine tool.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible.

Claims (4)

An X-axis bed 1 mounted in the X-axis direction and having an X-axis servomotor 11 mounted at one end thereof; A Z-axis bed 3 mounted on one side of the X-axis bed 1 in the Z-axis direction and equipped with a Z-axis servomotor 31 at one end thereof; A tool post 2 mounted on an upper side of the X-axis bed 11 and sliding in the X-axis direction, in which a tool T is mounted toward the Z-axis bed 3; It is mounted on the upper side of the Z-axis bed (3) and slides in the Z-axis direction, both ends of the ultra-precision shelf, characterized in that consisting of the main shaft servo motor 41 and the headstock (4) on which the chuck 42 is mounted. According to claim 1, Between the upper side of the X-axis bed (1) and the lower side of the tool post (2) is equipped with a sliding table (5) having an upper end fixed to the tool post (2), the Z-side bed ( 3) the high precision shelf, characterized in that the upper end is fixed to the main spindle (4) between the upper side and the lower side of the main shaft (4) is mounted. According to claim 1 or claim 2, wherein the upper side of the X, Z-axis beds (1, 3), the inclined surface 61 on both sides, the horizontal groove portion 62 in the center and the horizontal portion at the upper end of both inclined surface 61 Guides 6, each having 63 formed therein, are provided, and inclined protrusions 51 provided with outer inclined surfaces 511 in close contact with the inclined surfaces 61 are formed on both lower sides of the sliding table 5, respectively. On the upper end of the outer inclined surface 511 formed symmetrically on both sides, an inclined reverse inclined surface 512 is formed, and fixed to the horizontal portion 63 of the guide 6 on the outer side of the reverse inclined surface 512. The high-precision shelf, characterized in that the reverse inclined surface 512 and the bracket 7 is in close contact with the inside. The inclined surface 71 is formed on the inner side of the bracket 7, the inclined surface 71 is moved in an oblique direction by a set screw (S) and an inner surface of the bracket (7). 5) High precision lathe, characterized in that the inclined bushing (8) in close contact with the reverse inclined surface (512).