KR20070081225A - Measurement apparatus of tool for machine tool - Google Patents

Abstract

An apparatus for measuring a tool for a machine tool is provided to supply a convenience of use by allowing a three-dimensional measurement without moving for a measurement target subject except for the tool. An apparatus(100) for measuring a tool for a machine tool includes a table(110), a stone platen(120), a base plate(123), a spindle(130) for receiving the tool, a body carrier(140), an elevation carrier(150), a measurement carrier(160), and first to third linear scale sensors(171,173,175). A plurality of wheels(112) is mounted on a bottom of the table for easily moving the table. The stone platen is received on a top of the table. The spindle is rotatably mounted on the stone platen. The spindle is rotatably installed with respect to a vertical direction as a center and is rotated by an operation of a handle(135). The base plate is detachably installed on the stone platen by a fixing member such as a bolt. A first guide unit(145) is extensively formed on a top surface of the base plate along an X direction.

Description

Measuring apparatus of tool for machine tools

1 is a perspective view showing a measuring device of a tool for a machine tool according to the present invention,

FIG. 2 is a partial excerpt side view showing an example of a measuring sensor mounted on the measuring carrier of FIG. 1;

3 is a perspective view illustrating a part of another example of a measuring sensor mounted on the measuring carrier of FIG. 1;

4 is a control system circuit diagram of the measuring device of the tool of FIG.

<Description of Symbols for Main Parts of Drawings>

110: table 120: stone tablet

130: spindle for mounting the tool 140: body carrier

150: lifting carrier 160: measuring carrier

The present invention relates to an apparatus for measuring a tool for a machine tool, and more particularly, to an apparatus for measuring a tool for a machine tool, which enables to easily measure the dimensions of a tool and a workpiece on a work site.

Machining centers, which are widely used in the current machining field, are CNC machines that can process multiple workpieces. Several tools are stored in the tool magazine, and tools are automatically changed by an automatic tool changer in the programmed sequence to perform a series of tasks. Is a machine to perform. The tool used in this machining center is formed by BT taper with 7/24 taper of the tool fastening part with the spindle spindle. In order to measure the tool length, the distance from the gauge line at the fixed point of the taper to the tool edge should be measured. Therefore, tool length measurement is not easy.

The tool measuring method used in the conventional CNC equipment is to measure the tool size in the tool room using a tool presetter used in the CNC equipment group, and input information such as the length and diameter of the tool measured in the CNC equipment.

The measuring device for a tool for a machine tool disclosed in Korean Utility Model No. 0326589 as a conventional tool presetter has a disadvantage in that the dial gauge housing is movable only for two mutually orthogonal axes so that the measurement object is limited to the tool. In particular, if you want to measure the length, outer diameter, width, etc. for the processed product, the inconvenience of having to use a separate measuring device in addition to the measuring device occurs.

The present invention has been made to improve the above problems, and an object of the present invention is to provide a measuring device for a machine tool that can easily perform a dimensional measurement in the field for the measurement target other than the tool.

In order to achieve the above object, a measuring device for a tool for a machine tool according to the present invention includes: a stone tablet mounted on an upper side of a table; A tool seating spindle which can be seated by inserting a tool into the stone platform but is rotatably installed with respect to the stone platform; A body carrier installed to be transportable along the first guide part extending in a first direction in the stone plate; An elevating carrier mounted on the body carrier so as to be lowered along the second guide part extending vertically; A measurement carrier installed on the elevating carrier so as to be transportable along a third guide portion extending in a horizontal direction perpendicular to the first direction; A measuring sensor installed on the measuring carrier to measure a dimension including an outer diameter and a length of a measuring object; First to third linear scale sensors which detect and provide transport position values of the body carrier, the lifting carrier and the measurement carrier; And a control unit configured to calculate a set dimension from a signal output from the measuring sensor and the first to third linear scale sensors when the measuring sensor contacts the measuring object and to display the measured value through a display unit.

Preferably, further comprising a base plate detachably coupled to the stone plate, wherein the first liar scale sensor and the first guide are coupled to the base plate and are mounted to the control unit and the base plate. And are formed to be electrically connected to each other by a connector.

The control unit may further include a key for selecting one of a tool measurement mode for measuring a tool seated on the tool seating spindle and a workpiece size measurement mode for measuring a measurement target seated on the stone plate. An input unit; And a controller configured to display, on the display unit, the dimension measured for the workpiece to be processed from the values output from the scale sensor and the measurement sensor according to the key signal input from the key input unit.

Hereinafter, with reference to the accompanying drawings will be described in more detail the measuring apparatus of the tool for a machine tool according to an embodiment of the present invention.

1 is a perspective view showing a measuring device of a tool for a machine tool according to the present invention, Figure 2 is a view showing an example of a measuring sensor mounted on the measuring carrier of Figure 1, Figure 3 is a view of the tool of Figure 1 Control system circuit diagram of measuring device.

1 to 3, the measuring device 100 of a tool for a machine tool includes a table 110, a stone plate 120, a base plate 123, a tool seating spindle 130, and a body carrier 140. And a lifting carrier 150, a measurement carrier 160, and first to third linear scale sensors 171, 173, and 175.

Table 110 has a wheel 112 on the bottom for easy movement. Unlike the illustrated example, the wheel 112 may be omitted.

The stone tablets 120 are seated on the table 110. Stone top plate 120 is applied to the top surface of the stone to be applied to the processing.

The tool seating spindle 130 is rotatably mounted on the stone plate 120.

The tool seating spindle 130 is rotatably installed about the vertical direction, and can be rotated by the operation of the handle 135.

For example, the tool seating spindle 130 may be constructed to be rotated in conjunction with the rotation of the handle 135 through the bevel gear.

In addition, the tool seating spindle 130 is formed to have a tapered receiving groove 131 to be gradually narrowed downward to seat the tool 200 formed in the BT tapered form is applied.

The base plate 123 is detachably installed on the stone plate 120 by a fixing member such as a bolt.

The first guide part 145 and the first reel scale sensor 171 are provided on the upper surface of the base plate 123.

In this case, if you want to replace the stone plate 120 or move the measuring device to another working environment to use the base plate 123 is separated from the stone plate 120 provides an easy portability advantage. Unlike the illustrated example, the base plate 123 may be omitted.

The first guide part 145 is formed on the upper surface of the base plate 123 so as to extend in the first direction, that is, the X direction.

The first guide part 145 may be formed to have a sliding coupling structure corresponding to the body carrier 140 so that the body carrier 140 can be transferred along the first direction.

In the illustrated example, the first guide part 145 has a rack gear 146 formed along the length direction. In this case, a pinion (not shown) may be rotatably installed at a portion of the body carrier 140 that faces the rack gear 146. Unlike the illustrated example, the first guide part 145 may be formed in a rail shape, and the body carrier 140 may be formed to be slid by being constrained to the rail.

Reference numeral 148 is a stopper provided to restrain the body carrier 140 to the first guide part 145.

The first linear scale sensor 171 is installed on the base plate 123 in parallel with the first guide part 145, and may measure a position value corresponding to a moving position of the body carrier 140. 140).

The first linear scale sensor 171 may be applied to various known methods. For example, a fine scale may be engraved therein, and a method of reading a pulse as the sensor module passes and converting the pulse into a linear movement distance may be applied. . In this case, the sensor module is installed in the body carrier 140.

The second guide part 155 rotates in parallel with the vertical bar 156 and the vertical bar 156 installed vertically from the upper surface of the body carrier 140, that is, extended in a second direction along the Z direction in the second direction. A screw 157, possibly installed, was applied.

The second linear scale sensor 173 is installed vertically along the extending direction of the vertical bar 156 so as to detect the lifting height of the lifting carrier 150.

The lifting carrier 150 is installed to be lowered along the vertical bar 156 according to the rotation of the screw 157.

The third guide part 165 is integrally coupled to the lifting carrier 150, and extends along a third direction, that is, a Y direction, orthogonal to the first and second directions, respectively. It is restrained and formed so that sliding is possible.

The third linear scale sensor 175 is provided on the third guide part 165 so as to measure the movement position of the measurement carrier 160.

The sliding coupling structure between the measurement carrier 160 and the third guide bar 165 may use any of the methods described above.

The measurement carrier 160 is equipped with measurement sensors 161 and 162 capable of measuring various dimensions including the outer diameter and the length of the measurement object when it is in contact with the measurement object. The measurement sensors 161 and 162 are typically formed so that the contactor and the contactor can calculate a set parameter, for example, height and diameter, when the contactor is in contact with the measurement object. Can be.

As an example, the measurement sensors 161 and 162 may be applied with a first digital gauge in which the contactor extends in the X direction and a second digital gauge in which the contactor extends downward along the Z direction. . In this case, the first digital gauge is used to measure the diameter or width of the tool or workpiece to be measured, and the second digital gauge is used to measure the height of the tool or workpiece to be measured.

Unlike the illustrated example, a well-known measuring sensor capable of measuring both height and diameter with one gauge may be applied. As an example, the measuring caliper disclosed in Korean Patent Application Publication No. 1988-0007995 may be applied. .

Alternatively, as shown in FIG. 3, a contact sensor may be rotated from the body, and a measurement sensor 163 may be applied to provide measurement information corresponding to a rotation angle.

The operation panel 180 is mounted on the table 180, and a key operation unit 183 and a display unit 185 are provided. The control unit 190 may be embedded in the operation panel 180 or externally. The control unit includes a key operation unit 183, a display unit 185, and a control unit 190.

Preferably, a structure in which electrical connection between the control unit and the elements installed on the base plate 123 is connected through a connector (not shown) is applied. In this case, if the connector is separated and the control unit and the base plate are separated from the table 180 and the stone plate 120, it can be installed and used in another working environment.

The key operation unit 183 may be provided with a plurality of keys including a mode setting key and a zero setting key for setting any one of a tool measuring mode and a workpiece-based measuring mode.

Herein, the tool measuring mode refers to a mode in which the tool 200 is mounted on the tool seating spindle 130 and the diameter and height of the tool 200 are measured. In the tool measuring mode, the center point of the tool seating spindle 130 is zero. As a result, the controller 190 calculates the diameter and the height from the values measured by the measurement sensors 161 and 162 and displays the same through the display unit 185.

In addition, in the workpiece countermeasure mode, when the user operates the zero setting key while the user touches one side of the countertop product with the measuring sensor 162 with respect to the countertop goods placed at an arbitrary position on the upper surface of the stone platform 120. When the contact signal of the measuring sensor 162 is received later based on the zero position, the values detected by the measuring sensors 161, 162, 163 and the lead scale sensors 171, 173, 175 are determined. The measured value calculated from the zero point is calculated as a corresponding dimension value and displayed on the display unit 185.

Meanwhile, unlike the illustrated example, at least one or more of the tool seating spindle 130 and each of the carriers 140, 150 and 160 may be constructed to be moved by a user operated position by the driving force of the motor. Of course.

According to the measuring device of the tool for a machine tool according to the present invention as described so far, it is possible to measure the three-dimensional dimensions without moving even to the object to be measured other than the tool provides convenience in use.

Claims (3)

A stone tablet mounted on an upper side of the table; A tool seating spindle which can be seated by inserting a tool into the stone platform but is rotatably installed with respect to the stone platform; A body carrier installed to be transportable along the first guide part extending in a first direction in the stone plate; An elevating carrier mounted on the body carrier so as to be lowered along the second guide part extending vertically; A measurement carrier installed on the elevating carrier so as to be transportable along a third guide portion extending in a horizontal direction perpendicular to the first direction; A measuring sensor installed on the measuring carrier to measure a dimension including an outer diameter and a length of a measuring object; First to third linear scale sensors which detect and provide transport position values of the body carrier, the lifting carrier and the measurement carrier; And And a control unit which calculates a set dimension from a signal output from the measuring sensor and the first to third linear scale sensors and displays it on a display unit when the measuring sensor contacts the measuring object. Measuring device for tool. According to claim 1, further comprising a base plate detachably coupled to the stone plate, wherein the first lire scale sensor and the first guide is coupled to the base plate, the control unit and the base plate And the mounted element is electrically connected to each other by a connector. The method of claim 1, wherein the control unit A key input unit provided with a key for selecting any one of a tool measurement mode for measuring a tool seated on the tool seating spindle and a workpiece size measurement mode for measuring a measurement target seated on the stone plate; And a control unit for displaying, on the display unit, the dimension measured for the workpiece to be processed from the values output from the scale sensor and the measurement sensor according to the key signal input from the key input unit. Measuring device.

Images