CS255294B1

CS255294B1 - Regulating work-holding fixture

Info

Publication number: CS255294B1
Application number: CS864920A
Authority: CS
Inventors: Jan Cabadaj
Original assignee: Jan Cabadaj
Priority date: 1986-06-30
Filing date: 1986-06-30
Publication date: 1988-02-15
Also published as: CS492086A1

Abstract

Riešenie sa týká regulovatelného upínača obrobkov určeného predovšetkým pre bezobsluž- né obrábacie procesy. Podstatou riešenia je to, že základ a/alebo ustavovaoia jednotka sú opatřené jedným meraoím zariadením deformácie, ktoré je opatřené optoelektrickým sní- mačom změny polohy ustavovacej jednotky. Ďalej, že meracie zariadenie deformácie je spojené s regulátorom pre změnu upínacej sily, připadne s regulátorom pre změnu polohy ustavovacej jednotky alebo upínacej jednotkyThe solution concerns a controllable workpiece clamp designed especially for unmanned machining processes. The essence of the solution is that the foundation and / or the mounting unit are provided with a single deformation measuring device provided with an optoelectric sensor for changing the position of the locating unit. Furthermore, the deformation measuring device is connected to a regulator for changing the clamping force, possibly with a regulator for changing the positioning unit or clamping unit.

Description

Vynález sa vztahuje na regulovatelný upínač obrobkov určený predovšetkým pre bezobslužné obrábacie procesy.The invention relates to a controllable workpiece clamp, especially intended for unmanned machining processes.

Doposial známe regulovatelné uplnače obrobkov pre bezobslužné obrábacie procesy sú opatřené meracim zariadenlm upinaoej sily, umiestneným medzi funkčnými častami upínača a obrobkom alebo medzi funkčnými častami upínača navzájom. Komplikuje to zostavovanie upínača a vzhladom na potřebu prevodníkov merania upínacej sily sa znižuje přesnost merania, a tým aj přesnost regulácie upínacej sily.Previously known adjustable workpiece feeders for unmanned machining processes are provided with a clamping force measuring device located between the functional parts of the chuck and the workpiece or between the functional parts of the chuck with each other. This complicates the assembly of the clamp and, due to the need for the clamping force transducers, the accuracy of the measurement, and hence the clamping force control, is reduced.

Uvedené nevýhody sú zmiernené regulovatelným upínačom obrobkov podlá vynálezu, ktorého podstata spočívá v tom, že základ a/alebo ustavovacia jednotka sú opatřené jedným meracim zariadením deformácie.These disadvantages are alleviated by the adjustable workpiece clamp according to the invention, which is characterized in that the base and / or the locating unit are provided with one deformation measuring device.

Přínos vynálezu spočívá v tom, že regulácie upínacej sily a polohy je ovplyvňovaná meraním deformácií elementov upínača, ktoré rozhodujúcim spčsobom ovplyvňujú dodržanie ustavenia obrobku v upinači. Okrem toho meracie zariadenie deformácie ustavovacieho elementu móže byť na ustavovací element zavesené, tj. nemusí byť montované medzi funkčně časti upínača, alebo medzi časti upínača a obrobok, čo zjednodušuje montáž upínača a manipuláciu s ním.The advantage of the invention is that the regulation of the clamping force and the position is influenced by measuring the deformations of the clamping elements, which in a decisive manner influence the adherence of the workpiece in the clamping device. In addition, the deformation measuring device of the alignment element can be suspended from the alignment element, i.e., the alignment element. it does not have to be mounted between the clamping parts functionally, or between the clamping parts and the workpiece, which simplifies mounting and handling.

Příklad prevedenia vynálezu je znázorněný na priloženom výkrese, kde je znázorněný nárys regulovatelného upínača s upnutým obrobkom.An exemplary embodiment of the invention is illustrated in the accompanying drawing, in which a front view of an adjustable clamp with a clamped workpiece is shown.

Regulovatelný upínač obrobkov je tvořený základom 10, ustavovacou jednotkou 30 a upínacou jednotkou 20 spojenou s hydrogenerátorom 60. Obrobok 70 je ustavený prostrednictvom ustavovacej jednotky 30, na ktorej je umiestnené meracie zariadenie 40 deformácie so snímačom 41, spojené s regulátorom 50 upínacej sily. Upínacia jednotka 20 pozostáva z upínacieho elementa 21 a ovládaoieho elementa 22.The controllable workpiece clamp comprises a base 10, an alignment unit 30, and a clamping unit 20 connected to a hydrogen generator 60. The workpiece 70 is set up by an alignment unit 30 on which a deformation measuring device 40 with a sensor 41 is connected to the clamping force regulator 50. The clamping unit 20 consists of a clamping element 21 and a control element 22.

Upnutie obrobku 70 je vyvodzované tlakom hydraulického oleja dodávaného hydrogenerátorom 60 do ovládacieho elementa 22 upínacej jednotky 20. Velkost deformácie ustavovacej jednotky 30 je snímané snímačom 41 meracieho zariadenia 40 deformácie spojeným s regulátorom 50 meniacim velkost dodávaného tlaku do ovládaoieho elementa 22 upínacej jednotky 20, a tým aj velkosťou upínacej sily.The clamping of the workpiece 70 is caused by the pressure of the hydraulic oil supplied by the pump 60 to the actuating element 22 of the clamping unit 20. The deformation amount of the locating unit 30 is sensed by the deformation sensor 41 connected to the regulator 50. and the size of the clamping force.

Iná možnost regulácie funkčných vlastností regulovatelného upínača je regulácia změny polohy ustavovacej jednotky 30» respektive upínacej jednotky 20 neznázorněným prestavovatelným elementom.Another possibility to regulate the functional properties of the adjustable clamp is to control the position change of the positioning unit 30 or the clamping unit 20 by an adjustable element (not shown).

Claims

An adjustable workpiece clamp comprising, in particular, a modular base, locating units, clamping units with an elementary control unit, a measuring device and a controller, characterized in that the base (10) and / or the locating unit (30) are provided with a deformation measuring device (40).

Adjustable clamp according to claim 1, characterized in that the deformation measuring device (40) is provided with an optoelectric sensor (41) of the positioning of the positioning unit (30).

Adjustable clamp according to items 1 and 2, characterized in that the deformation measuring device (40) is connected to a regulator (50) for changing the clamping force.

Adjustable clamp according to claim 2 or 3, characterized in that the deformation measuring device (40) is connected to a regulator (50) for changing the position of the positioning unit (30) or the clamping unit (20).