Richard J Johnstone

US Patent:

44727836, Sep 18, 1984

Filed:

Jul 23, 1982

Appl. No.:

6/401243

Inventors:

Richard Johnstone - Brookfield WI

Assignee:

Kearney & Trecker Corporation - West Allis WI

International Classification:

G06F 1546
G05B 19417

US Classification:

364474

Abstract:

An improved flexible manufacturing system comprises a plurality of computer numerically controlled machine tools, each controlled by a machine control system which is supplied with a plurality of sets of machine NC part programs and a program map from a supervisory control computer system. Each of the machine tools is located about the perimeter of a track which carries a plurality of pallet-carrying transporters, each moving under the control of a material handling system controller. The supervisory control computer system, coupled to the control system of each machine tool and to the material handling system controller, is provided with input data indicative of production requirements, material resources and system status, that is to say, the type of part carrying pallet carried by each transporter. In accordance with the input data supplied thereto, the supervisory control computer system supplies routing information to the material handling system controller which, in response, initiates movement of a transporter to a machine tool, shuttling of the part carrying pallet from the transporter to the machine tool, and execution of a selected one of the sets of machine NC part programs by the machine control system in accordance with the program map. During intervals, when the supervisory control computer system is inoperative, continued flexible manufacturing system operation can be maintained by operating the material handling system controller in semi-automatic or manual mode.

US Patent:

41853768, Jan 29, 1980

Filed:

Dec 22, 1977

Appl. No.:

5/863435

Inventors:

Richard Johnstone - Brookfield WI

Assignee:

Kearney & Trecker Corporation - West Allis WI

International Classification:

B23Q 3157

US Classification:

29568

Abstract:

A numerically controlled machining center has a tool magazine, automatic tool changer, workpiece shuttle, and a workpiece magazine which holds enough workpieces for operation by the machining center for an entire shift of approximately eight hours. The numerical controls are programmed to perform predetermined machining operations on each workpiece, in turn, and to replace each finished workpiece with a fresh workpiece at the end of each machining program. A proximity switch is mounted on the machining center for checking tools to detect broken or incorrect tools. The tools are positioned adjacent to the proximity switch and are rotated while the output of the proximity switch is counted for one complete rotation of the tool to determine the number of radially extending teeth on the tool. If the tool has too few or too many teeth, thus indicating a broken or incorrect tool, it is replaced by another tool of the same type. If no alternate tool is available in the tool magazine, the machining cycle is automatically suspended.

US Patent:

46284419, Dec 9, 1986

Filed:

Jun 29, 1983

Appl. No.:

6/509214

Inventors:

Richard Johnstone - Brookfield WI
Edward E. Kirkham - Brookfield WI
Han C. Chung - West Allis WI
Lyle D. Ostby - Milwaukee WI

Assignee:

Kearney & Trecker Corporation - Milwaukee WI

International Classification:

G05B 1918
G05B 1929
G06F 1546

US Classification:

364167

Abstract:

An automatic dynamic error compensator for compensating the position error arising within a servo drive system includes a measuring head which is operative to measure the relative indicated position of two or more measuring vanes on the movable member. The measuring head, together with a feedback transducer, that measures indicated movable member position, are coupled to a feedback system. The feedback system determines the indicated movable member position from the feedback transducer reading and then compares the indicated movable member position to the known vane position upon occurrence of a vane crossing to yield a compensating value.

US Patent:

41093097, Aug 22, 1978

Filed:

Feb 9, 1977

Appl. No.:

5/767142

Inventors:

Richard Johnstone - Brookfield WI
Lyle D. Ostby - Brookfield WI

Assignee:

Kearney & Trecker Corporation - West Allis WI

International Classification:

G06F 305
G06F 1546

US Classification:

364120

Abstract:

An analog signal which occurs in a computer controlled machine tool is converted to digital form at the machine tool site and is stored in a memory portion of the machine tool computer. The digitized analog signal is subsequently read out of the memory and is transmitted to a remote diagnostic unit via a conventional digital transmission link. The digitized analog signal received by the diagnostic unit is stored in a memory portion of the diagnostic computer and is subsequently read out and converted back to analog form for display on an oscilloscope in the diagnostic unit to aid in the diagnosis of existing or incipient faults in the machine tool.

US Patent:

42380340, Dec 9, 1980

Filed:

Apr 16, 1979

Appl. No.:

6/030162

Inventors:

Charles B. Sipek - Hales Corners WI
Richard Johnstone - Brookfield WI
Russell B. Clegg - Milwaukee WI

Assignee:

Kearney & Trecker Corporation - West Allis WI

International Classification:

B23Q 3157

US Classification:

211 15

Abstract:

A tool storage drum which is adapted to receive and store a plurality of toolholders is rotatably mounted on top of the upright of a horizontal machining center behind the spindle thereof. A tool changer carriage carrying a tool change arm is pivotally mounted on the upright above the spindle and is pivotable between a parked position in which an end of the tool changer arm is adjacent to the tool storage drum and an exchange position in which an end of the tool changer arm is adjacent to the spindle. The tool changer arm is slidably mounted on the carriage for movement between an extended and a retracted position to remove toolholders from their sockets or insert them therein and is rotatable through 180. degree. to interchange its ends for the purpose of exchanging a tool in the spindle for a tool previously removed from the tool storage drum.

US Patent:

43909531, Jun 28, 1983

Filed:

Jul 6, 1981

Appl. No.:

6/281019

Inventors:

Richard Johnstone - Brookfield WI

Assignee:

Kearney & Trecker Corporation - Milwaukee WI

International Classification:

G06F 1546

US Classification:

364474

Abstract:

An unmanned diagnostic communications system for analyzing the operation of a remotely situated computer controlled machine tool and for diagnosing any abnormalities disclosed during machine tool operation includes an auto dialer and MODEM coupled between the computer controlled machine tool and one end of a communications channel and an auto answer MODEM coupled between the other end of the communications channel and a diagnostic computer. In response to a test command entered by an operator to the remotely situated computer controlled machine tool or a machine tool initiated test command, the auto dialer automatically establishes a communications link with the diagnostic computer through the auto answer MODEM. Thereafter, the diagnostic computer determines the identity of the remotely situated computer controlled machine and then transmits instructions to the computer controlled machine tool to direct its operation. In accordance with the program instructions from the diagnostic computer, the computer controlled machine tool transmits data indicative of machine tool operating characteristics to the diagnostic computer which analyzes such data to detect and diagnose any machine tool abnormalities.

US Patent:

47848944, Nov 15, 1988

Filed:

Mar 23, 1984

Appl. No.:

6/592695

Inventors:

Richard Johnstone - Brookfield WI
Edward E. Kirkham - Brookfield WI
Edward J. Hummelt - Wauwatosa WI

Assignee:

Kearney & Trecker Corporation - West Allis WI

International Classification:

B32B 516

US Classification:

428212

Abstract:

A composite for constructing an article which is composed of a nonmetallic substance as represented by igneous rock of different particle sizes which are compacted and then surrounded by a solidified plastic resin. In a preferred manner, the igneous rock material is a selected type of basalt with the basalt particles being of different mesh sizes to be compacted into a mold. After compaction, the plastic resin as represented by an epoxy resin is introduced into the mold so as to displace air from any voids surrounding the basalt particles and to surround them with a resin which later solidifies. A novel resin delivery system is also presented.

US Patent:

41725123, Oct 30, 1979

Filed:

Aug 24, 1977

Appl. No.:

5/827232

Inventors:

Russell B. Clegg - Milwaukee WI
Richard Johnstone - Brookfield WI

Assignee:

Kearney & Trecker Corporation - West Allis WI

International Classification:

B65G 4700

US Classification:

198339

Abstract:

The worktable and pallet shuttle of a machine tool are driven by a common motor which is mounted on the worktable base. The motor is coupled to the worktable by gears which engage when the worktable is raised to be indexed and disengage when the worktable is lowered. The motor is coupled to the pallet shuttle by gears which engage when the worktable base is moved into the shuttle position and disengage when the worktable base is moved out of the shuttle position.

Author:

Richard Johnstone

ISBN #:

0192117793

Author:

Richard Johnstone

ISBN #:

0198268246

Author:

Richard Johnstone

ISBN #:

0455212791

Author:

Richard Johnstone

ISBN #:

0455218560