CH372945A - Contactless measuring control for surface grinding machines - Google Patents
Contactless measuring control for surface grinding machinesInfo
- Publication number
- CH372945A CH372945A CH5709658A CH5709658A CH372945A CH 372945 A CH372945 A CH 372945A CH 5709658 A CH5709658 A CH 5709658A CH 5709658 A CH5709658 A CH 5709658A CH 372945 A CH372945 A CH 372945A
- Authority
- CH
- Switzerland
- Prior art keywords
- surface grinding
- control
- grinding machines
- measuring
- measuring control
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
- B24B49/04—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
- B24B49/045—Specially adapted gauging instruments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
- B24B49/04—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
Description
Berührungslose Messteuerung für Flächenschleifmaschinen Gegenstand der Erfindung ist eine Messteuerung für Flächenschleifmaschinen.
Das Bestreben, den Leistungsablauf einer Flä chenschleifmaschine mit Langtisch- oder Rundtisch- Bewegung zu mechanisieren oder automatisieren schliesst den Messvorgang ein, da dieser am Gesamt- Arbeitsaufwand einen beträchtlichen Zeitanteil be ansprucht. So wurden dafür schon mechanische, elektronische oder pneumatische Steuerungen ent wickelt, welche das Messen des Schleifgutes ein- schliessen und den Arbeitsablauf selbsttätig beenden, sobald das eingestellte Endmass erreicht ist.
Diese bekannten Messteuerungen sind aber noch nicht vollkommen betriebssicher und ergeben kein unbedingtes Gleichmass der geschliffenen Flächen teile in feinsten Toleranzen, weil durchweg mecha nische Tastgeräte Anwendung finden, welche lau fendem Verschleisse unterliegen und in ihren eige nen Bewegungen zu sehr streuen, oder, soweit es sich um pneumatische Geräte handelt, diese bei un terbrochenen Flächen ausscheiden.
Diese durch Erfahrungen gewonnenen Betriebs ergebnisse führten zu dem Gedanken, eine berüh rungslose Messung und damit Steuerung des Ar beitsablaufes auf optischen Wegen zu suchen und zu entwickeln.
In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes im Aufriss schematisch dar gestellt. Die Schleifscheibe ist mit<B>1</B> bezeichnet. Das Werkstück 2 ist auf dem Schleiftisch<B>3</B> aufgespannt. Die ungeschliffene Werkstückoberfläche (strich punktiert) ist 4, die bearbeitete Werkstückoberfläche ist<B>5.</B> Der verstellbare Mess- und Steuerkopf ist<B>6.</B>
Der Mess- und Steuerkopf<B>6</B> ist an seinem Trä ger 14 verstellbar angeordnet und besteht aus einer Lichtquelle<B>7</B> und einem Linsensystem<B>8</B> in einem bestimmten Winkelverhältnis. Auf dem Systemweg 12 sitzt die Fotozelle<B>9.</B> Der Schnittpunkt der Licht wege ist dabei das erstrebte und leicht einstellbare Endmass in naturgemäss feinster bzw. optischer To leranz und wird bei<B>13</B> angesetzt,<B>d.</B> h. der Schnitt punkt der optischen Axen der Lichtquelle<B>7</B> und der Seelenzelle<B>9</B> wird auf die unbearbeitete Oberfläche 4 eingestellt z.
B.<B>1</B><U>mm</U> über dem festgesetzten Soll- mass am Reflexpunkt<B>10</B> auf der Werkstückober- fläche <B>5.</B> Die Einstellung der optischen Messteuerung erfolgt auf das Sollmass unter Verwendung eines Endmasses oder einer gleichartigen Messcheibe. Das Endmass oder die Messcheibe entspricht dem Soll- mass, und danach wird die optische Messteuerung eingestellt,<B>d.</B> h. dem im Winkel stehenden optischen Linsensystem wird Lichtdurchlass gegeben, so dass der Abschaltvorgang wirksam wird.
Nach der Einstellung auf dieses Sollmass be ginnt der Schleifprozess,<B>d.</B> h. die Schleifscheibe be ginnt oberhalb dieses Sollmasses zu schleifen.
Sobald nun die Schleifscheibe auf dem Schleifgut dieses eingestellte Sollmass erreicht hat, wird der Lichtdurchfluss <B>11</B> in den Weg 12 des Linsensystems freigegeben und die Fotozelle<B>9</B> ausgelöst, welche wiederum ein elektrisches Steuersystem zum Aus fahren des Arbeitstisches<B>3</B> mit dem fertig bearbei teten Schleifgut 2 in Sekunden-Bruchteilen bringt.
Diese optische Messteuerung von Flächenschleif maschinen ist in ihrer Massgebung völlig sicher, be- triebsfest und unterliegt keiner Verschleissbean- spruchung.
Contactless measuring control for surface grinding machines The invention relates to a measuring control for surface grinding machines.
The endeavor to mechanize or automate the performance of a surface grinding machine with long table or rotary table movement includes the measuring process, as this takes up a considerable amount of time in the total workload. Mechanical, electronic or pneumatic controls have already been developed for this purpose, which include measuring the material to be sanded and automatically terminate the work process as soon as the set final dimension is reached.
However, these known measurement controls are not yet completely reliable and do not result in any absolute uniformity of the ground surfaces parts in the finest tolerances, because mechanical touch devices are used throughout, which are subject to ongoing wear and tear and scatter too much in their own movements, or, as far as they are Pneumatic devices are involved, which are eliminated from uninterrupted surfaces.
These operating results gained through experience led to the idea of looking for and developing a non-contact measurement and thus control of the work process on optical paths.
In the drawing, an embodiment of the subject invention is shown schematically in elevation. The grinding wheel is labeled <B> 1 </B>. The workpiece 2 is clamped on the grinding table <B> 3 </B>. The unsanded workpiece surface (dash-dotted line) is 4, the machined workpiece surface is <B> 5. </B> The adjustable measuring and control head is <B> 6. </B>
The measuring and control head <B> 6 </B> is adjustably arranged on its carrier 14 and consists of a light source <B> 7 </B> and a lens system <B> 8 </B> in a specific angular relationship. The photocell <B> 9. </B> is located on system path 12. The intersection of the light paths is the desired and easily adjustable final dimension in naturally finest or optical tolerance and is set at <B> 13 </B>, <B> d. </B> h. the point of intersection of the optical axes of the light source <B> 7 </B> and the soul cell <B> 9 </B> is set on the unprocessed surface 4 z.
B. <B> 1 </B> <U> mm </U> above the specified target dimension at the reflex point <B> 10 </B> on the workpiece surface <B> 5. </B> The setting the optical measurement control takes place on the target dimension using a gauge block or a similar measuring disk. The final dimension or the measuring disk corresponds to the nominal dimension, and then the optical measuring control is set, <B> d. </B> h. the angled optical lens system is given light transmission so that the switch-off process becomes effective.
After setting to this target dimension, the grinding process begins, <B> d. </B> h. the grinding wheel begins to grind above this target dimension.
As soon as the grinding wheel on the grinding material has reached this set target dimension, the light flow <B> 11 </B> is released into path 12 of the lens system and the photocell <B> 9 </B> is triggered, which in turn is an electrical control system for Moving the work table <B> 3 </B> with the finished grinding material 2 takes place in fractions of a second.
This optical measurement control of surface grinding machines is completely safe in terms of its dimensions, reliable and is not subject to any wear and tear.
Claims (1)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH5709658A CH372945A (en) | 1958-03-14 | 1958-03-14 | Contactless measuring control for surface grinding machines |
GB8866/58A GB833951A (en) | 1958-03-14 | 1958-03-19 | Improvements in surface grinders |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH5709658A CH372945A (en) | 1958-03-14 | 1958-03-14 | Contactless measuring control for surface grinding machines |
GB8866/58A GB833951A (en) | 1958-03-14 | 1958-03-19 | Improvements in surface grinders |
Publications (1)
Publication Number | Publication Date |
---|---|
CH372945A true CH372945A (en) | 1963-10-31 |
Family
ID=25737615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH5709658A CH372945A (en) | 1958-03-14 | 1958-03-14 | Contactless measuring control for surface grinding machines |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH372945A (en) |
GB (1) | GB833951A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0155380A1 (en) * | 1984-01-21 | 1985-09-25 | Karl Heesemann Maschinenfabrik GmbH & Co KG | Belt sanding machine |
-
1958
- 1958-03-14 CH CH5709658A patent/CH372945A/en unknown
- 1958-03-19 GB GB8866/58A patent/GB833951A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0155380A1 (en) * | 1984-01-21 | 1985-09-25 | Karl Heesemann Maschinenfabrik GmbH & Co KG | Belt sanding machine |
Also Published As
Publication number | Publication date |
---|---|
GB833951A (en) | 1960-05-04 |
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