KR20140082304A - hydraulic control circuit for lathe - Google Patents

hydraulic control circuit for lathe Download PDF

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Publication number
KR20140082304A
KR20140082304A KR1020120152096A KR20120152096A KR20140082304A KR 20140082304 A KR20140082304 A KR 20140082304A KR 1020120152096 A KR1020120152096 A KR 1020120152096A KR 20120152096 A KR20120152096 A KR 20120152096A KR 20140082304 A KR20140082304 A KR 20140082304A
Authority
KR
South Korea
Prior art keywords
chuck
control valve
proportional control
tailstock
valve
Prior art date
Application number
KR1020120152096A
Other languages
Korean (ko)
Inventor
이경식
Original Assignee
현대위아 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대위아 주식회사 filed Critical 현대위아 주식회사
Priority to KR1020120152096A priority Critical patent/KR20140082304A/en
Publication of KR20140082304A publication Critical patent/KR20140082304A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B23/00—Tailstocks; Centres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
    • B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
    • B23B31/302—Hydraulic equipment, e.g. pistons, valves, rotary joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • F15B2211/20515—Electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Gripping On Spindles (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The present invention relates to a hydraulic drive circuit for a lathe, which improves the quality and productivity of machining products by automatically setting the hydraulic pressure of the chuck and the pressure-
A chuck proportional control valve and a tail rest proportional control valve respectively connected to the manifold, a chuck proportional control valve and a chuck proportional control valve, respectively, connected to the manifold, A chucking solenoid valve and a tailstock solenoid valve respectively connected to the tail proportional control valve, a chuck pressure gauge and a tailstock pressure gauge respectively connected to the chuck proportional control valve and the tail valve proportional control valve, A chuck cylinder and a tailstock cylinder respectively connected to the chuck solenoid valve and the tailstock solenoid valve, a slope controller for driving the chuck proportional control valve and the tail proportional control valve, An input / output card connected to the slope controller, and an input / And a numerical control unit connected to the control unit.

Description

[0001] The present invention relates to a hydraulic control circuit for lathe,

The present invention relates to a hydraulic drive circuit for a lathe, more specifically, by automatically setting a hydraulic pressure of a chuck and a pressure pad, it is possible to improve the quality and productivity of the processed product by preventing the deterioration of the quality and productivity of the processed product due to the pressure setting error To a hydraulic drive circuit for a lathe.

A machine used for machining a metal or non-metal material to a shape and dimensions using appropriate tools, or for finer machining of a semi-finished material by various cutting or non-cutting methods is called a machine tool. Among the above-mentioned machine tools, a machine tool in which chips are generated in the machining process is called a cutting machine tool, and a non-cutting machine tool in which chips are not generated in a machining process is called a metal machining machine. The above-mentioned cutting machine tools include a lathe, a milling machine, a machining center, a drilling machine, a boring machine, a grinding machine, a gear processing machine, and a special processing machine. The metal forming machine includes a mechanical press, Bending machines, stair machines, and drawing machines.

The above-mentioned lathe is the same as the face lathe, which is a shelf used for cutting a workpiece having a short length and a large diameter, which is mainly used for cutting a section of a workpiece, A tabletop shelf which is a shelf for a taper clipper and a lid device to which a lid is attached and a lid for processing small parts such as a clock part and a sewing machine part by a small lid which is required to be installed on a work table, A vertical lath, which is a shelf for easy attachment and detachment of workpieces, with a chuck vertically installed on the ground for easy processing of workpieces or irregularly shaped workpieces, When the tracer is moved, the bites are moved together to automatically move parts of the same shape as the model or template Ball mill which mimics that there are shelves and shelves of the turret lathe, for mass production of components simple to install and fit a variety of tools to process using a rotary tool turret called for.

Generally, the lathe is made up of a main shaft, a tail stock, a tool stand, a discharge shaft, etc., and a hydraulic circuit for driving the chuck and the tailstock of the main shaft to clamp the workpiece is required.

1 is a circuit diagram of a conventional hydraulic drive circuit for a lathe.

As shown in Fig. 1, the conventional hydraulic drive circuit for a lathe includes: an electric hydraulic pump 11 for generating a hydraulic pressure; and an electric motor 11 for measuring the pressure of the hydraulic pressure discharged from the electric hydraulic pump 11 A manifold 13 connected to the electric hydraulic pump 11 and a chuck pressure reducing valve 14a and a tail pressure reducing valve 14a connected to the manifold 13 are connected to the pump pressure gauge 12, A chuck solenoid valve 16a and a tailstock solenoid valve 16b which are respectively connected to the chuck pressure reducing valve 14a and the tailstock pressure reducing valve 14b and the chuck pressure reducing valve 14a, A chuck pressure gauge 15a and a tailstock pressure gauge 15b which are respectively connected to the crankshaft pressure reducing valve 14b and the tailstock pressure reducing valve 14b and the chuck pressure gauge 15a and the tailstock pressure gauge 15b which are respectively connected to the chuck solenoid valve 16a and the tail roller solenoid valve 16b A chuck cylinder 17a and a tailstock cylinder 17b.

The operation of the conventional hydraulic drive circuit for a lathe according to the above configuration is as follows.

When oil pressure is generated from the electric hydraulic pump 11, the hydraulic pressure is input to the chuck pressure reducing valve 14a and the tailstock pressure reducing valve 14b through the manifold 13. The operator confirms the pressure through the chuck pressure gauge 15a and the tail vein pressure gauge 15b which are respectively connected to the chuck pressure reducing valve 14a and the tailstock pressure reducing valve 14b while controlling the chuck pressure reducing valve 14a and the tail pad The pressure applied to the chuck cylinder 17a and the tailstock cylinder 17b is adjusted by adjusting the pressure reducing valve 14b.

The hydraulic pressure that has passed through the chuck pressure reducing valve 14a and the tailstock pressure reducing valve 14b is applied to the chuck cylinder 17a and the tailstock cylinder 17b via the chuck solenoid valve 16a and the tailstock solenoid valve 16b Allows the workpiece to be clamped or unclamped.

However, in the conventional hydraulic drive circuit for a lathe as described above, since the worker must manually adjust the chuck pressure reducing valve 14a and the tailstock pressure reducing valve 14b every time the workpiece is changed, There is a problem that the quality and productivity of the processed product are deteriorated.

It is an object of the present invention to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a hydraulic pressure control system and a hydraulic control system, And to provide a hydraulic drive circuit for a lathe which can be improved.

According to an aspect of the present invention, there is provided a hydraulic control apparatus for an internal combustion engine, comprising: an electric hydraulic pump for generating a hydraulic pressure; a manifold connected to the electric hydraulic pump; A chuck solenoid valve and a tailstock solenoid valve respectively connected to the chuck proportional control valve and the tail joint proportional control valve, and a chuck proportional control valve and a tail rest proportional control valve, A chuck cylinder and a tailstock cylinder respectively connected to the chuck solenoid valve and the tailstock solenoid valve and the chuck proportional control valve and the tailstock proportional control valve A power supply for supplying power to the slope controller, and a slope controller And an input / output card connected to the controller, and a numerical controller connected to the input / output card and outputting a control signal for adjusting a pressure applied to the chuck cylinder and the tailstock cylinder.

The configuration of the present invention preferably further comprises a chuck pressure gauge and a tail pressure gauge connected to the chuck proportional control valve and the tail rest proportional control valve, respectively.

In the configuration of the present invention, it is preferable that the slope controller converts the digital control signal input from the input / output card and outputs the analog control signal.

The configuration of the present invention is preferably such that the chuck proportional control valve and the tail rest proportional control valve are adjusted in opening degree in proportion to the magnitude of the analog control signal input from the slope controller.

The present invention has the effect of improving the quality and productivity of processed products by automatically setting the hydraulic pressure of the chuck and the pressure-sensitive bands, thereby preventing the deterioration of the quality and the productivity of the processed product due to the pressure setting error.

1 is a circuit diagram of a conventional hydraulic drive circuit for a lathe.
2 is a circuit diagram of a hydraulic drive circuit for a lathe 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, so that those skilled in the art can easily carry out the present invention. Other objects, features, and operational advantages, including the purpose, operation, and effect of the present invention will become more apparent from the description of the preferred embodiments.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory only and are not to be construed as limiting the scope of the invention as disclosed in the accompanying claims. It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities, many of which are within the scope of the present invention.

Also, terms and words used in the description and claims of the present invention are defined based on the principle that the inventor can properly define the concept of a term in order to explain its invention in the best way, And should not be construed as limited to only the prior art, and should be construed in a meaning and concept consistent with the technical idea of the present invention. For example, the terms relating to directions are set on the basis of the position represented on the drawing for convenience of explanation.

2 is a circuit diagram of a hydraulic drive circuit for a lathe according to an embodiment of the present invention.

2, the configuration of a hydraulic drive circuit for a lathe according to an embodiment of the present invention includes an electric hydraulic pump 21 for generating a hydraulic pressure, A pump pressure gauge 22 for measuring the pressure of the hydraulic pressure, a manifold 23 connected to the electric hydraulic pump 21 and a chuck proportional control valve 22 connected to the manifold 23, The chuck solenoid valve 26a and the tail vein solenoid valve 26b connected to the chuck proportional control valve 24a and the tail joint proportional control valve 24b, respectively, A chuck pressure gauge 25a and a tailstock pressure gauge 25b connected to the chuck proportional control valve 24a and the tail joint proportional control valve 24b respectively and the chuck solenoid valve 26a, And a chuck cylinder 27a connected to the tailstock solenoid valve 26b, A slope controller 28 for driving the chuck proportional control valve 26a and the tailrest proportional control valve 26b and a controller for controlling the supply of power to the slope controller 28 An input / output card 30 connected to the slope controller 29 and a chuck cylinder 17a and a tailstock cylinder 17b connected to the input / output card 30 And a numerical controller 31 for outputting a control signal for adjusting the applied pressure.

The operation of the hydraulic drive circuit for a lathe according to an embodiment of the present invention with the above-described configuration is as follows.

When hydraulic pressure is generated from the electric hydraulic pump 21, it is input to the chuck proportional control valve 24a and the tail proportional control valve 24b through the manifold 23.

The numerical control section 31 outputs a control signal through the input / output card 30 to adjust the pressure applied to the chuck cylinder 17a and the tailstock cylinder 17b. The slope controller 28 controls the input / 30 to convert the analog control signal to drive the chuck proportional control valve 24a and the tail proportional control valve 24b.

The chuck proportional control valve 24a and the tail rest proportional control valve 24b are adjusted in opening degree in proportion to the magnitude of the analog control signal input from the slope controller 28. [

The oil pressure that has passed through the chuck proportional control valve 24a and the tailstock proportional control valve 24b passes through the chuck solenoid valve 26a and the tailstock solenoid valve 26b to the chuck cylinder 27a and the tailstock cylinder 27b So that the workpiece is clamped or unclamped.

21: Electric hydraulic pump 22: Pump pressure gauge
23: manifold 28: slope controller
29: Power supply 30: I / O card
31: Numerical control section

Claims (4)

An electric hydraulic pump for generating a hydraulic pressure,
A manifold connected to the electric hydraulic pump,
A chuck proportional control valve and a tail rest proportional control valve respectively connected to the manifold,
A chuck solenoid valve and a tailstock solenoid valve respectively connected to the chuck proportional control valve and the tailstock proportional control valve,
A chuck cylinder and a tailstock cylinder respectively connected to the chuck solenoid valve and the tailstock solenoid valve,
A slope controller for driving the chuck proportional control valve and the tail rest proportional control valve,
A power supply for supplying power to the slope controller,
An input / output card connected to the slope controller,
And a numerical controller connected to the input / output card and outputting a control signal for adjusting a pressure applied to the chuck cylinder (17a) and the tailstock cylinder (17b). The method according to claim 1,
Further comprising a chuck pressure gauge and a tailstock pressure gauge connected to the chuck proportional control valve and the tailstock proportional control valve, respectively. The method according to claim 1,
Wherein the slope controller converts the digital control signal input from the input / output card into an analog control signal and outputs the analog control signal. The method of claim 3,
Wherein the chuck proportional control valve and the tailstock proportional control valve are adjusted in opening degree in proportion to the magnitude of the analog control signal input from the slope controller.
KR1020120152096A 2012-12-24 2012-12-24 hydraulic control circuit for lathe KR20140082304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120152096A KR20140082304A (en) 2012-12-24 2012-12-24 hydraulic control circuit for lathe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120152096A KR20140082304A (en) 2012-12-24 2012-12-24 hydraulic control circuit for lathe

Publications (1)

Publication Number Publication Date
KR20140082304A true KR20140082304A (en) 2014-07-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120152096A KR20140082304A (en) 2012-12-24 2012-12-24 hydraulic control circuit for lathe

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KR (1) KR20140082304A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107931640A (en) * 2016-10-13 2018-04-20 上海锐铎自动化有限公司 A kind of electro-hydraulic chuck system of intelligent control
CN114233708A (en) * 2021-12-15 2022-03-25 中国航发动力股份有限公司 Hydraulic control system and method for positioning dividing plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107931640A (en) * 2016-10-13 2018-04-20 上海锐铎自动化有限公司 A kind of electro-hydraulic chuck system of intelligent control
CN114233708A (en) * 2021-12-15 2022-03-25 中国航发动力股份有限公司 Hydraulic control system and method for positioning dividing plate
CN114233708B (en) * 2021-12-15 2023-11-24 中国航发动力股份有限公司 Hydraulic control system and method for indexing plate positioning

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