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Valve apparatus

A technology of valve device and clamping device, which is applied in the direction of fluid pressure actuating device, transportation and packaging, servo motor, etc. It can solve problems such as machine tool damage, clamping device loosening, machine tool operator safety threat, etc., and achieve reliable clamping The effect of tension monitoring

Inactive Publication Date: 2010-10-06
HYDAC FLUITECHNIK GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now if, during machining with a machine tool, the clamping pressure on the clamping device drops due to a fault, this can cause the clamping device to loosen and then the released workpiece can cause serious damage to the machine tool and pose a serious risk to the safety of the machine operator threaten

Method used

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  • Valve apparatus
  • Valve apparatus
  • Valve apparatus

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] In the three embodiments, comparable components are used in principle, in particular valve components, and comparable components are assigned the same reference numerals. The main components for this are as follows:

[0013] 1A, 1B Regulators with Mechanical Self-Actuation

[0014] 2 throttle plate

[0015] 4A, 4B Directional valve with detent (self-braking) position

[0016] 5 Back pressure locking device in the form of check valve

[0017] 6A, 6B pressure sensor

[0018] 7 Swivel joint

[0019] 8 Two check valves

[0020] 9 Clamping cylinder designed as synchronized cylinder

[0021] 10 chuck with small transmission ratio (no self-brake)

[0022] 11 Hydraulic accumulator

[0023] 12 Controls

[0024] The clamping cylinders, identified by 9 in the drawing, are designed as so-called hydraulic synchronous cylinders and the jaws of the chuck 10 move toward each other in one direction of movement and move away in the opposite direction. In this way, the workpiece...

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PUM

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Abstract

The invention relates to a valve apparatus for setting and monitoring the clamping pressure of a clamping device (9) for workpieces which are to be clamped, in particular in lathes, having at least one pressure control valve (1A, 1B), via which the clamping pressure is set for the clamping device (9), and having at least one pressure sensor (6A, 6B) which detects the respective clamping pressure of the clamping device (9), which clamping pressure is to be adjusted in relation to a predefinable setpoint clamping pressure. It is possible by way of the valve apparatus to this effect to set the clamping pressure which is relevant in terms of safety, and also to monitor it, in particular to maintain or reduce it, during the machining in the sense of an adjustment.

Description

technical field [0001] The invention relates to a valve arrangement for adjusting and monitoring the clamping pressure of a clamping device for workpieces to be clamped, in particular in lathes. Background technique [0002] In modern machine tools, especially lathes, the workpiece to be machined is usually clamped by hydraulically actuable clamping devices, in particular in the form of clamping cylinders, and / or by means of hydraulically actuable so-called tailstock pinolens. Holding in reverse, wherein the corresponding machine tool is not started until the clamping pressure has been reached. Now if, during machining with a machine tool, the clamping pressure on the clamping device drops due to a fault, this can cause the clamping device to loosen and then the released workpiece can cause serious damage to the machine tool and pose a serious risk to the safety of the machine operator threaten. [0003] In addition to this clamping pressure monitoring for a reliable clamp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/028B25B5/06F15B21/08
CPCF15B2211/30525F15B2211/7054F15B2211/565B23B31/302F15B2211/3051F15B2211/3138F15B2211/6313F15B2211/50554F15B2211/625F15B2211/30505F15B2211/526F15B2211/6653F15B11/028F15B2211/327F15B2211/3057F15B21/08F15B2211/40507F15B2211/41509F15B2211/3111B23Q17/005F15B2211/212F15B2211/20538Y10T137/7837Y10T137/7846
Inventor A·格里戈莱特B·施泰因曼
Owner HYDAC FLUITECHNIK GMBH