ABRASIVE ADJUSTMENT CONTROL FOR DOUBLE DISC GRINDER

• US 3,561,164 A
• Filed: 06/18/1968
• Issued: 02/09/1971
• Est. Priority Date: 02/24/1966
• Status: Expired due to Term

• Current Assignee: Elman R. Dunn
• Original Assignee: Elman R. Dunn
• Inventors: Dunn, Elman R.
• Application Number:
  US04/741,150
• Time in Patent Office: 966 Days
• US Class Current: 451/22
• CPC Class Codes: B23Q 15/00 Automatic control or regulation of feed movement, cutting velocity or position of tool or work programme-control G05B19/00, e.g. numerical programme-control G05B19/18
• CPC Class Codes: B24B 37/042 operating processes therefor
• CPC Class Codes: B24B 49/00 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 B24B33/06, B24B37/005 take precedence; if applicable to other machine tools, B23Q15/00 - B23Q17/00 take precedence
• CPC Class Codes: B24B 49/02 according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent B24B49/12 takes precedence
• CPC Class Codes: B24B 49/04 involving measurement of the workpiece at the place of grinding during grinding operation
• CPC Class Codes: B24B 7/162 for mass articles
• CPC Class Codes: B24B 7/17 for simultaneously grinding opposite and parallel end faces, e.g. double disc grinders

Abstract

THE APPARATUS OF THIS DISCLOSURE RELATES TO DISC GRIDERS FOR GRINDING THIN WORKPIECES WHICH MUST BE HELD WITHIN CLOSE LIMITS. AS GROUND WORKPIECES EMERGE FROM THE MAACHINE, THEY ARE MEASURED BY A POST PROCESS GAGING DEVICE. WHEN A CHANGE IN SIZE OF THE WORKPIECE INDICATES THE NEED FOR ADJUSTMENT OF THE DISCS, THE GAGE MAY OPERATE A SIGNAL OR AN AUTOMATIC CORRECTING DEVICE TO MAKE THE NECESSARY CHANGE. FOR THE PURPOSE OF ILLUSTRATION, THE CORRECTING FUNCTION IS INITIATED BY MEANS OF A PUSH BUTTON. SUCCESSIVE OPERATION OF THE PUSH BUTTON IN RESPONSE TO THE SIGNAL FROM THE POST PROCESS GAGE ADVANCES ONE OF THE DISCS TOWARD THE OTHER BY A SERIES OF SINGLE INCREMENTS. AFTER A PREDETERMINED NUMBER OF SUCH INCREMENTS, A COUNTER TRANSFERS THE SUBSEQUENT SIGNAL OR PUSH BUTTON CONTACT TO EFFECT THE ADVANCE OF THE OTHER DISC. THEREAFTER, SAID OTHER DISC IS ADVANCED IN RESPONSE TO THE PUSH BUTTON UNTIL IT ENGAGES A SENSING DEVICE. THE SENSING DEVICE THEN INITIATES OPERATION OF THE FEED MECHANISM TO RETRACT THE DISC WHICH ACTUATED A SENSING DEVICE, A PREDETERMINED DISTANCE AND ADVANCES THE OTHER DISC BY THE SAME AMOUNT. THIS MOVEMENT OF THE TWO DISCS RESTORES THEM TO THE INITIAL POSITION RELATIVE TO THE GUIDE MEMBERS WHICH DIRECT THE WORKPIECES BETWEEN THE DISCS.

Claims