KR101762397B1

KR101762397B1 - The rotary table is provided in the rotary encoder

Info

Publication number: KR101762397B1
Application number: KR1020150136359A
Authority: KR
Inventors: 송석홍; 신흥철; 박우상; 조성기; 이현중
Original assignee: (주)기흥기계
Priority date: 2015-09-25
Filing date: 2015-09-25
Publication date: 2017-07-28
Also published as: KR20170037162A

Abstract

The present invention relates to a rotary table equipped with a rotary encoder. A rotary table equipped with a rotary encoder according to an embodiment of the present invention includes a table supporting a workpiece to be machined, a table rotated in one direction and equipped with a mounting member at a central portion thereof; An encoder bracket having an upper surface coupled to a lower end of the mounting member; An encoder shaft fastened to the upper end of the lower end of the encoder bracket and having a rotation transmitting member at a lower end thereof; An encoder cover installed outside the encoder shaft and having a rotation bearing accommodated therein for supporting the rotation of the encoder shaft; A rotary encoder installed on the rotation transmitting member and coupled to a lower end of the encoder cover to convert a mechanical displacement amount corresponding to the rotational energy of the table into a digital amount to detect a rotation speed and a rotation angle of the table; A braking bracket formed to penetrate the rotary encoder and the encoder cover to receive the rotary encoder therein and to control a rotation speed of the table; A motor cover disposed at a lower portion of the braking bracket for supporting the braking bracket and provided with a motor for rotating the table in one direction at an upper portion thereof and a motor cover disposed at an upper portion of the braking bracket and at an upper portion of the motor, And a power transmitting member for transmitting the power energy to the table.

Description

[0001] The present invention relates to a rotary table provided with a rotary encoder,

The present invention relates to a rotary table equipped with a rotary encoder. And more particularly to a rotary table having an encoder shaft and an encoder bracket on the inside thereof and a rotary encoder provided below the encoder shaft and the encoder bracket so that foreign matter such as chips and cutting oil can be transferred to the inside of the rotary encoder To a rotary table equipped with a rotary encoder for preventing penetration into the rotary table.

In general, a rotary table is a device that allows a complex workpiece to be machined into a single setting while rotating a workpiece. Usually, a rotary shaft and a tilting shaft are used in order to rotate or tilt the structure. And a rotary table apparatus is widely applied to a machine tool such as a milling machine, a grinding machine, or an NC boring machine for rotationally dividing a workpiece.

Accordingly, Korean Patent Publication No. 2012-0068196 discloses a machine tool having a pipe as a cooling line and a modular cartridge detachably attached to the machine tool body. The cartridge includes a workpiece There has been disclosed a direct drive type rotary table device including a rotary table to be mounted and a torque motor connected to the rotary table for rotating the rotary table to rotate the rotary table and detachable from and to the rotary table.

However, according to the above-mentioned prior art documents, the rotary table is difficult to assemble, and foreign substances such as chip and cutting oil penetrate into a rotary encoder for measuring angles and positions, resulting in frequent breakdown and malfunction.

(Patent 0001) Korea Patent Publication No. 2012-0068196

In order to solve the problems of the related art, the present invention is characterized in that an encoder shaft and an encoder bracket are provided inside the rotary table, and a rotary encoder is provided below the encoder shaft and the encoder bracket, A rotary encoder provided with a rotary encoder which can prevent foreign substances such as cutting oil from penetrating into the inside of the rotary encoder and simplify the assembly of parts of the rotary body and rotary encoder by assembling and installing an encoder shaft at the upper end of the rotary encoder, Tables.

In order to solve the above-described technical problem,
A rotary table equipped with a rotary encoder according to an embodiment of the present invention includes a table supporting a workpiece to be machined, a table rotated in one direction and equipped with a mounting member at a central portion thereof;
An encoder bracket having an upper surface coupled to a lower end of the mounting member;
An encoder shaft fastened to the upper end of the lower end of the encoder bracket and having a rotation transmitting member at a lower end thereof;
An encoder cover installed outside the encoder shaft and having a rotation bearing accommodated therein for supporting the rotation of the encoder shaft;
A rotary encoder installed on the rotation transmitting member and coupled to a lower end of the encoder cover to convert a mechanical displacement amount corresponding to the rotational energy of the table into a digital amount to detect a rotation speed and a rotation angle of the table;
A braking bracket formed to penetrate the rotary encoder and the encoder cover to receive the rotary encoder therein and to control a rotation speed of the table;
A motor cover disposed at a lower portion of the braking bracket and supporting the braking bracket and having a motor for rotating the table in one direction; And
A power transmitting member disposed outside the braking bracket and at an upper portion of the motor, the power transmitting member assembled with the table and transmitting the power energy generated in the motor to the table;
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Further, in the rotary table equipped with the rotary encoder according to an embodiment of the present invention, the table may include a non-slip groove formed radially at the upper end to prevent the workpiece from being separated from the rotary table;
As shown in FIG.

A rotary table having a rotary encoder according to an embodiment of the present invention includes a table cover disposed between the table and a motor cover for accommodating therein a motor to prevent intrusion of foreign matter generated during processing of a workpiece;
As shown in FIG.

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According to an embodiment of the present invention, an encoder shaft and an encoder bracket are provided on the inside of the rotary table, and a rotary encoder is provided below the encoder shaft and the encoder bracket so that foreign matters such as chips, It is possible to prevent penetration into the inside of the rotary encoder and to assemble and install the encoder shaft at the upper end of the rotary encoder to simplify the assembly of components of the rotary body and the rotary encoder and to improve the assemblability.

1 is an overall perspective view of a rotary table with a rotary encoder according to an embodiment of the present invention;
2 is a front view of a rotary table provided with a rotary encoder according to an embodiment of the present invention;
3 is a sectional view of a rotary table equipped with a rotary encoder according to an embodiment of the present invention;
4 is a perspective view of a rotary shaft and a rotary encoder of a rotary table equipped with a rotary encoder according to an embodiment of the present invention,
5 is an exploded perspective view of a rotary shaft and a rotary encoder of a rotary table equipped with a rotary encoder according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications are possible.

FIG. 2 is a front view of a rotary table provided with a rotary encoder according to an embodiment of the present invention. FIG. 3 is a front view of the rotary table provided with the rotary encoder according to the embodiment of the present invention. FIG. 4 is a perspective view of a rotary shaft and a rotary encoder of a rotary table provided with a rotary encoder according to an embodiment of the present invention, FIG. 5 is a perspective view of an embodiment of the present invention Fig. 6 is an exploded perspective view of a rotary shaft and a rotary encoder of a rotary table provided with a rotary encoder according to Fig.

1 to 3, a rotary table 100 provided with a rotary encoder according to an embodiment of the present invention includes a table 110 supporting a workpiece and rotating and moving in a predetermined direction, A table cover 130 which is formed at the lower end and protects the components of the rotary table 100 from the outside and a table cover 130 which is configured to transmit the power energy generated by the motor 170 to the table 110, A rotary encoder 150 for converting the amount of mechanical displacement in the rotational direction and angle into a digital quantity, the rotary encoder 150 being provided at a side surface of the rotary shaft 150 and generating power energy; (190).

The table 110 is formed at the upper end of the rotary table 100 and is configured to support the workpiece and to rotate and move in a predetermined direction so that the workpiece can smoothly be machined and formed into a circular shape, no.

The table 110 includes a non-slip groove 111 radially formed at the upper end thereof and a mounting member 113 for fixing the encoder bracket 151, which will be described later, in order to prevent the workpiece from being sagged or slid to one side.

The slip prevention grooves 111 are radially formed at the upper end of the table 110 to prevent the workpiece from being sagged and slid to one side and to prevent foreign substances such as chips or cutting oil generated in the workpieces from flowing into the workpiece .

The mounting member 113 provided at the center of the table 110 may be formed of a material having a predetermined elastic force and a frictional force at the upper end thereof to provide a predetermined frictional force so that the workpiece is not easily separated from the table 110, And is coupled with a later-described encoder bracket 151 by a conventional fixing member such as a cross screw or a bolt.

In addition, the mounting member 113 includes an O-ring 103 for preventing deformation and gaps due to the pressure generated due to the load of the workpiece on the side surface.

The table cover 130, which is formed at the lower end of the table 110, is configured to prevent foreign matter such as chip or cutting oil from entering the workpiece and to protect the work from external force, ) Can be assembled to the machine tool.

The rotating shaft 150 formed inside the rotary table 100 is configured to transmit the power energy generated by the motor 170 to the entire table 100. The rotating shaft 150 is rotatably supported by an encoder A bracket 151 and an encoder shaft 153 for transmitting the rotational energy generated in the table 110 to the rotary encoder 190 and an encoder cover 155 for protecting the encoder shaft 153.

4 to 5, the encoder bracket 151 is a medium for coupling the upper surface of the mounting member 113 to the lower end of the mounting member 113 to transmit rotational energy generated in the table 110 to the encoder shaft 153, And a plurality of first fixing grooves 151b for engaging with the mounting member 113. The first and second fixing grooves 151a and 151b are formed in the first and second fixing grooves 115 and 115, A fixing member is fastened to the insertion hole 151a and the first fixing groove 151b so as to firmly engage with each other.

Needless to say, a plurality of third insertion holes 151c may be formed on the inner side of the encoder bracket 151 so as to be coupled with the encoder shaft 153 through a conventional fixing member.

The encoder cover 155 is installed outside the encoder shaft 153 and accommodates therein a rotation bearing 157 for supporting the rotation of the encoder shaft 153. Therefore, a bearing cover 157a for fixing the rotation bearing 157 can be provided on the upper part.

The encoder shaft 153 is configured to transmit power generated by the motor 170 to the entire table 110 and has a third fixing groove 153a for fastening the encoder bracket 151 to the upper surface thereof. So that the rotation energy generated in the table 110 can be transmitted through the encoder bracket 151 by being fastened to the encoder bracket 151 through a conventional fixing member.

The encoder shaft 153 is formed at its lower end with a rotation transmitting member 153b which is coupled with the rotary encoder 190 and transmits rotational energy generated in the encoder shaft 153 to the rotary encoder 190. [

The rotation transmitting member 153b is inserted into the rotary encoder 190 and transmits part of the rotational energy generated in the table 110 to the rotary encoder 190 so that the rotary encoder 190 performs the measurement of the table 110 and the workpiece .

The encoder cover 155 is installed outside the encoder shaft 153 as described above. An encoder cover hole 155a is formed so that the encoder shaft 153 can be inserted into the center thereof and a fourth fixing groove 155b is formed on the upper surface for coupling with the bearing cover 157a, A fastening hole 155c is formed at the peripheral edge for fastening with the fastener 175.

The motor 170 configured inside the table cover 130 is configured to supply the rotational energy of the rotary table 100. In the present invention, the motor 170 is constituted by a torque motor that generates rotational energy and kinetic energy However, the present invention is not limited to this, and may be a variable speed motor, a roll motor, a tension motor, or the like.

As shown in FIG. 3, the motor 170 is installed on the upper portion of the motor cover 171 configured to protect the motor 110 from external pressure, thereby rotating the table 110 in one direction. A power transmitting member 173 for transmitting the power energy generated by the motor 170 to the table 110 is disposed in the upper portion of the motor 170. The power transmitting member 173 is disposed inside the power transmitting member 173, A braking bracket 175 configured to braking rotational energy generated in the table 110 is disposed on the upper portion of the main body 171.

The motor cover 171 has a plurality of ventilation grooves 171a for cooling the heat energy generated by the motor 170 installed at the upper portion thereof and is disposed below the brake bracket 157, Direction.

The power transmitting member 173 is connected to the motor 170 and the bearing 105 and the flange 109 so as to smoothly transmit the power to the table 110. The power transmitting member 173 is assembled with the table 110 through a normal fixing member .

The braking bracket 175 controls the rotation speed of the rotary table 100 and has a center portion formed therethrough to house the rotary encoder 190 and the encoder cover 157 therein.

In addition, the motor 170 includes an O-ring 103 for preventing the load of the work and the deformation and the gap that occur during the movement of the rotary table 100, and an O-ring 103 for reducing the frictional resistance when the shaft rotates, A connector 107 for joining the electric device and the electric wire to each other, and a flange 109 are formed so that the motor 170 can be smoothly driven.

The rotary encoder 190 is a position sensor that is coupled to the encoder shaft 153 and converts the amount of mechanical displacement in the rotational direction into a digital amount. After calculating the rotational direction and angle by grasping the position of the workpiece on the table 110 It is a device configured to move according to the position and angle.

Here, the rotary encoder 190 includes an incremental encoder for integrating pulses corresponding to the rotation angle from the measurement start point, and an absolute encoder for measuring an absolute angular position of one rotation or multiple rotation with respect to the origin. An incremental encoder is selected, but the present invention is not limited thereto.

The rotary encoder 190 is disposed at the lower end of the rotary shaft 150 to prevent foreign substances such as chips or cutting oil from entering the rotary shaft 150 from entering the rotary shaft 150, It is very simple that a quick and quick check can be made when checking the rotary table 100.

In addition, the rotary encoder 190 is configured to be able to engage with the encoder cover 155 through a fixing member 190a into which the encoder shaft 153 is inserted, and a plurality of holes on the outer circumferential surface thereof and via a usual fixing member.

Although the present invention has been described in connection with the preferred embodiments thereof with reference to the accompanying drawings, it is to be understood that the present invention is not limited thereto, It is to be understood that various modifications and changes may be made without departing from the scope of the appended claims.

100: Rotary table 110: Table
111: Slip prevention groove 113: Mounting member
130: table cover 131: rotary cover
150: rotating shaft 151: encoder bracket
153: Encoder shaft 155: Encoder cover
157: Brake bracket 170: Motor
171: Motor cover 173: Power transmission member
175: Brake bracket 190: Rotary encoder

Claims

A table supporting a workpiece so as to be machined, a mounting member rotatable in one direction and having an O-ring on a side portion thereof at a central portion thereof;
An encoder bracket having an upper surface coupled to a lower end of the mounting member;
An encoder shaft fastened to the upper end of the lower end of the encoder bracket and having a rotation transmitting member at a lower end thereof;
An encoder cover installed outside the encoder shaft and having a rotation bearing accommodated therein for supporting the rotation of the encoder shaft;
A rotary encoder installed on the rotation transmitting member and coupled to a lower end of the encoder cover to convert a mechanical displacement amount corresponding to the rotational energy of the table into a digital amount to detect a rotation speed and a rotation angle of the table;
A braking bracket formed to penetrate the rotary encoder and the encoder cover to receive the rotary encoder therein and to control a rotation speed of the table;
A motor cover disposed at a lower portion of the braking bracket and supporting the braking bracket and having a motor for rotating the table in one direction;
A table cover which is disposed between the table and the motor cover and accommodates the motor therein to prevent intrusion of foreign substances generated during processing of the workpiece and which has a rotary cover protruding from the outer circumferential surface to be assembled to the machine tool; And
A power transmitting member disposed outside the braking bracket and at an upper portion of the motor, the power transmitting member assembled with the table and transmitting the power energy generated in the motor to the table;
And a rotary table provided with a rotary encoder.

The method according to claim 1,
Wherein the table is formed in a radial shape at an upper end portion to prevent the workpiece from being separated from the non-slip groove;
Further comprising: a rotary encoder provided with a rotary encoder.

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