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KR-20260067186-A - PRECISION POSITIONING STAGE

KR20260067186AKR 20260067186 AKR20260067186 AKR 20260067186AKR-20260067186-A

Abstract

According to the present invention, a tool compensation device for a CNC lathe with a new structure that can be easily installed within the machining chamber of a CNC lathe while avoiding interference with peripheral devices and can easily adjust the angle according to the structure of the lathe bed is provided, thereby providing a precision position adjustment stage that is manufactured with high precision through CNC machining.

Inventors

  • 한상욱

Assignees

  • 주식회사 다원라이즈

Dates

Publication Date
20260512
Application Date
20241105

Claims (2)

  1. As a precision position adjustment stage, A bracket (21) installed to protrude horizontally from the side wall (2) on one side of the upper part of the chuck (3), and A base block (22) installed on the above bracket (21) and having a rotary driving mechanism built inside, and A pivot arm (23) that is horizontally rotatably coupled to the base block (22) and is extended in a bent, curved, or inclined manner, with the tip positioned lower than the base, and A touch sensor block (25) mounted on the tip of the above-mentioned pivoting arm (23), and An extension bar (27) that is angle-adjustably hinge-coupled to a hinge shaft (26) that is elastically coupled to the touch sensor block (25), and It includes a square touch head (28) that is coupled to the tip of the extension bar (27), has a touch portion formed on the perimeter of the square, and is configured to touch the tip of a tool that moves back and forth along the carriage when the rotating arm (23) rotates and is pulled out. The hinge axis (26) of the extension bar (27) is a precision position adjustment stage that is positioned parallel to the center axis of the chuck (3) when the pivot arm (23) protrudes to the tool measuring position.
  2. In Article 1, The above-mentioned pivoting arm (23) includes a horizontal arm (31) that is rotatably extended horizontally to the base block (22) and a vertical arm (32) that is extended downward from the tip of the horizontal arm (31), and a precision positioning stage that is horizontally protruded at the bottom of the vertical arm (32) of the touch sensor block (25) so as to be perpendicular to the extension direction of the horizontal arm (31).

Description

Precision Positioning Stage The present invention relates to a precision position adjustment stage manufactured with high precision through CNC machining. A CNC lathe is equipped with a tool compensator mounted on the inner wall of one side of the chuck where the workpiece is mounted in the machining chamber, which rotates to be retracted or extended. When extended, this tool compensator comes into contact with the tip of the tool, or cutting tool (bit), installed on the carriage, thereby measuring the tool's initial position, or zero coordinates. This data is then used as the basis for numerical machining data of the CNC lathe or for adjusting the tool's position. FIG. 1 is a drawing showing a conventional tool compensation device for such a CNC lathe. As shown, a chuck (3) for mounting a workpiece is mounted on one side wall (2) of the machining room of the CNC lathe, and a tool compensation device (10) of the rotating arm type is arranged on one side of the chuck (3). A tailstock is arranged at a position opposite to the chuck (3), and a tool holder (7) is installed on one side of the carriage (6) which is mounted on the bed (5) and is configured to reciprocate back and forth. One or more machining tools (9) are installed on the tool holder (7). However, in the conventional tool compensation device of such a CNC lathe, a base block (12) that supports the bending arm (13) so as to be rotatable is disposed at the base of the bending arm (13). This base block (12) is located at the lower side of the chuck (3). Since a workpiece collecting device (14) that collects the finished workpiece is placed in close proximity to this part, the assembly position of the tool compensation device must be carefully determined and assembled so as not to interfere with the workpiece collecting device (14). In addition, in order to position the sensor head (15) horizontally, the mounting angle of the base block (12) must be appropriately adjusted in advance according to the inclination angle of the bed (5) that is extended and installed at the lower part of the processing room, so there is a problem that the installation work of the tool compensation device is difficult. Figure 1 is an internal configuration diagram of a conventional CNC lathe. FIG. 2 is a drawing showing the appearance of a stage unit in an alignment assembly for a CNC machining device according to one embodiment of the present invention. FIG. 3 is a drawing showing the structure of a first alignment unit in an alignment assembly for a CNC machining device according to one embodiment of the present invention. A pivot arm (23) is horizontally pivotably coupled to this base block (22). The tip of this pivot arm (23) is bent, curved, or inclined so as to be positioned lower than the base. In the illustrated embodiment, this pivot arm (23) takes the form of a bent arm structure comprising a horizontal arm (31) that is horizontally pivotably extended from the base block (22), and a vertical arm (32) that extends downward from the tip of this horizontal arm (31). A touch sensor block (25) is mounted on the tip of the above-mentioned pivoting arm (23). A touch sensor is built into this touch sensor block (25). In the illustrated embodiment, the touch sensor block (25) is horizontally protruded at the bottom of the vertical arm (32) forming the pivot arm (23) so as to be perpendicular to the extension direction of the horizontal arm (31). And a hinge shaft (26) is elastically coupled to the touch sensor block (25). The hinge shaft (26) being elastically coupled to the touch sensor block (25) in this manner is intended to absorb the impact when a tool comes into contact with the square touch head (28) described later, and to perform a touch operation with the sensor inside the touch sensor block (25). Additionally, an extension bar (27) is provided that is hinge-coupled to the hinge shaft (26) in a way that allows for angle adjustment. The installation direction of the hinge shaft (26) of the extension bar (27) is such that when the rotating arm (23) of the tool correction device is positioned in a measurable state, that is, when the touch sensor block (25) protrudes forward of the chuck (3), the hinge shaft (26) is positioned parallel to the center axis of the chuck (3), i.e., the spindle. Accordingly, the extension bar (27) can be angle-adjusted around the hinge axis (26), and once the angle adjustment is complete, the hinge axis (26) is tightened to fix it so that it does not rotate. A square touch head (28) is attached to the tip of this extension bar (27). This square touch head (28) is formed in the shape of a square plate, and each perimeter surface touches the tip of a tool moving back and forth along the belt, thereby transmitting the mechanical displacement caused by the touch to the touch sensor block (25), thereby the tip of the tool It detects the position to enable adjustment of the tool's initial position, i.e., the zero point. This tool correction dev