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| Number | Title | Issue Date |
| 7556457 | Drilling system including drilling machine and compressor A compact drilling system capable of improving working efficiency. The drilling system includes a drilling machine and a compressor. A control circuit controls performances of a drill motor in the drilling machine and an air compression motor in the compressor based... | 07/07/2009 |
| 7395871 | Method for detecting a bit jam condition using a freely rotatable inertial mass An improved method is provided for controlling a power tool having a rotary shaft. The method includes: disposing an inertial mass in a housing of the power tool, such that the inertial mass is freely rotatable about an axis of rotation which is axially aligned with... | 07/08/2008 |
| 7364393 | Machine adaptation The invention relates to the transmission of power and/or data from/to a stationary part of a machine tool 200 to/from an accessory 100 mounted in the spindle 210 of the machine tool 200. A first electrical link or interface 1a,... | 04/29/2008 |
| 7334647 | Rotary tool An overload clutch assembly for a power tool having two torque settings through which rotary drive is transmitted to a spindle. The overload clutch assembly is capable of being between switched between the two torque settings by at least one actuator. The clutch ass... | 02/26/2008 |
| 7322120 | Tool damage detection device A tool damage detection device which detects the presence or absence of damage, has a contact bar rotatably supported on a casing; a pneumatically operated air drive device operatively connected with a supply of air under pressure; and a linear-to-rotational motion ... | 01/29/2008 |
| 7318691 | Tool apparatus for milling machine The present invention provides an automated-torque controlled tool for attachment to a milling machine. The tool comprises an elongated hollow housing defined by a neck section, a middle section, and a bottom section. The neck section is adapted to engage a spindle ... | 01/15/2008 |
| 7312433 | Measuring device and method for detecting objects interrupting a beam of radiation The invention relates to a measuring device 5 of the type which detects the interruption of a beam of radiation (e.g. light 20) by an object (50 FIG. 1) in the beam. The device includes a light emitter 12 and a light dete... | 12/25/2007 |
| 7303363 | Pneumatic drill A drill has a tubular outer housing and a tubular inner housing. The inner housing is movable between extended and retracted positions. A pneumatic motor with a chuck mounts to the inner housing. Air pressure is delivered to annular pistons to cause the inner housin... | 12/04/2007 |
| 7270194 | Drilling machine with pneumatic control A pneumatic drilling machine is provided, comprising a pneumatic motor, a circuit for connecting the motor to a source of compressed air, a tool holder spindle, and a drive mechanism. The drive mechanism comprises a coupling shaft which can be moved to select a firs... | 09/18/2007 |
| 7244080 | Quick-change insert for tools, especially for thread drills The present invention relates to a quick-change insert (10) for tools (11), in particular thread drills (12), for minimal lubrication, that is designed for detachable installation in a chuck (30) provided with a central lubricant channel ... | 07/17/2007 |
| 7178436 | Method of cutting carbon and alloy steel The present invention discloses a method and apparatus for controlling the load on the blade of a steel-cutting saw A programmable logic controller senses the spindle motor load current and compares it with the desired optimum operating current. Variations in hardne... | 02/20/2007 |
| 7124837 | Pneumatic motor trigger actuator A pneumatic motor trigger actuator includes a trigger housing adapted to engage a pneumatic motor trigger of a pneumatic tool. A top plate is coupled to the trigger housing. A primary valve is coupled to the top plate and has an open configuration and a closed confi... | 10/24/2006 |
| 7121773 | Electric drill apparatus An electric drill apparatus having a low profile is provided which comprises an annular cutter, a motor for rotating the annular cutter, a rotary shaft assembly for rotating the annular cutter attached to its leading end about a rotating, a rotation reduction mechan... | 10/17/2006 |
| 7123984 | Threading control method and apparatus therefor A threading control method and apparatus therefor is provided, in which, when carrying out thread-cut machining operations several times at one position, synchronized with main-spindle rotation and controlling movement of a threading spindle, deviations in thread gr... | 10/17/2006 |
| 7070509 | Tap position sensor with offset detection In an integrated cutting and tapping tool, a part in the form of a strip is held on a strip support with a hole facing a tap carried by a tapping tool. The bottom dead center point of the tap is detected by a feeler associated with a multiplier lever pivoting about ... | 07/04/2006 |
| 7059425 | Reciprocating power tool It is an object of the present invention to provide a reciprocating power tool having a further improved power transmission mechanism for converting a rotating output of a driving motor into linear motion in the axial direction of the tool bit. According to the pres... | 06/13/2006 |
| 7055620 | Hand-held machine tool The invention is based on a hand power tool having an electric motor (12) located in a housing (10), via which an insertable tool (16) situated in a tool mount (14) is capable of being driven in a rotating manner, and having a safety devi... | 06/06/2006 |
| 7048077 | Drilling machine with pneumatic control A pneumatic drilling machine is provided, comprising a pneumatic motor, a circuit for connecting the motor to a source of compressed air, a tool holder spindle, and a drive mechanism. The drive mechanism comprises a coupling shaft which can be moved to select a firs... | 05/23/2006 |
| 7036605 | Power tools A detector is disclosed that detects impact sounds, e.g., a hammer striking an anvil or oil pulses from an oil unit. The detector may comprise a receiver that selectively converts sound within a narrow frequency range into electric signals. Preferably, the impact so... | 05/02/2006 |
| 7011165 | Rotating electric hand tool implement with safety routine An electric hand tool apparatus (1) for driving a drill-like tool, which carries out an at least partial rotational movement, has within a housing (2), an electric motor (4) without or free of collector and slip ring, the rpm of which can be con... | 03/14/2006 |
| 6997654 | Tapping tool for use with drill press A tapping device is configured to be used within a drill press or lathe or other device capable of holding a cylindrical object. The tapping device has an upper projection for being axially fixed in, for example, a drill press. The remainder of the body of the tappi... | 02/14/2006 |
| 6920814 | Cutting tool safety system A woodworking machine is disclosed. The machine includes a cutting tool and a motor adapted to drive the cutting tool. The machine further includes a detection system to detect a dangerous condition between the cutting tool and a person, such as a person coming into... | 07/26/2005 |
| 6874980 | Controller for the electric motor of a high-speed spindle attachment used with computer-controlled milling machines An improved electronic controller for the motor of a high-speed spindle attachment used in conjunction with a cnc milling machine. The controller comprises preventative circuitry that protects the spindle assembly of the attachment from overload accruing as a result... | 04/05/2005 |
| 6859680 | Numerical controlling unit having tool-breakage detecting function A numerical controlling unit includes: an inputting part into which a machining program is inputted; an analyzing part that analyzes the machining program to generate an instructed spindle rotational speed and calculates a spindle load ratio of a load applied to a s... | 02/22/2005 |
| 6635894 | Optical measuring apparatus for measuring objects on machines The present invention teaches a method and apparatus for making measurement of an object on a machine, such as a machine tool, using an optical measuring apparatus which includes a light source for generating a beam of light which is incident on a detecto... | 10/21/2003 |
| 6514016 | Stuck tool detector and related method There is provided an apparatus and method for detecting stuck tools in automated machining operations. When a machining operation on a workpiece is finished, the tools are retracted from the workpiece. Prior to moving the workpiece to another machining op... | 02/04/2003 |
| 6384560 | Abnormality detection apparatus for tool and numerical control apparatus provided with same An abnormality detection apparatus for a tool (11) is described for judging abnormalities of a tool by a uniformly set threshold value in relation to a cutting load even in a machining process wherein a feed rate changes every moment. The abnormalities of... | 05/07/2002 |
| 6111515 | Method of and apparatus for preventing accidents during working with hand-held tools with a rotatable working tool A method of and an apparatus for preventing accidents caused by blockage of a rotatable tool when working with a hand-held tool including the rotatable tool (8), a drive motor (7) for driving the rotatable tool (8), and means (5, 6) for interrupting trans... | 08/29/2000 |
| 5954457 | Hand-held device A motor-operated hand-held device (1), such as a drilling device, has a rotary spindle 6 located in and projecting out of a housing (2). Rotational movement of a driving motor (8) is transmitted to a tool (7) situated in an end of the rotary spindle (6). ... | 09/21/1999 |
| 5921726 | Machine tool with worn-detection function for tool A machine with a worn detection function for a tool capable of reliably carrying out a worn detection for a tool. A present consumption power PW1 of a built-in motor 19, driving a main shaft 11, is watched and compared with a reference consumption power P... | 07/13/1999 |
| 5914882 | Device for and method of preventing accidents in hand-operated machine tools due to tool jamming A device for and method of preventing accidents caused by jamming of a tool when working with hand-operated machine tools driving a rotating tool, especially hammer drills, is outfitted with an interrupter device for interrupting the action of the driving... | 06/22/1999 |
| 5904457 | Detecting tool wear by thermal monitoring of workpiece A method of monitoring the condition of a tool in a machining operation for producing a plurality of toothed workpieces. The process comprises measuring the temperature of at least a portion of the plurality of workpieces each at essentially a same predet... | 05/18/1999 |
| 5902076 | Quill feed for a portable drill adapted to be mounted to a work surface A magnetic based drill assembly comprising a support platform mounted to the magnetic base for attachment to a work piece includes a feed mechanism operatively connected to the platform for rectilinear movement between a fully retracted position and a ful... | 05/11/1999 |
| 5879111 | Hand-held device A motor-operated hand-held device (1), such as a drilling device, has a rotary spindle (6) located within and projecting out of a housing (2). Rotational movement of a driving motor (8) is transmitted to a tool (7) secured to the end of the rotary spindle... | 03/09/1999 |
| 5876043 | Threading or drill chuck with wireless fault transmission A chuck comprising a chuck body and monitoring electronics for detecting chuck faults fitted within the chuck body. A wireless transmission means is provided on the chuck body for transmitting signals from the monitoring electronics. The chuck has a dynam... | 03/02/1999 |
| 5857812 | Process and device for detecting and compensating for jointing and wear errors in fine drilling The invention relates to a process and device for detecting and/or compensating for static jointing and wear errors in the fine drilling of workpieces by means of an adjusting tool (18) bearing an adjustable cutting insert (28) and capable of being clampe... | 01/12/1999 |
| 5857814 | Apparatus for controlling tapping-drilling machine An apparatus for controlling a tapping-drilling machine is disclosed in which holes can be formed by means of drilling tools, and threads can be formed by means of tapping tools. A worm is elongately formed on a spindle, and a worm wheel which is meshed w... | 01/12/1999 |
| 5762454 | Spindle device A spindle device for detecting the completion of an automatic tool changing procedure comprising a spindle (11) having a tool holder support portion (22) formed at the forward end thereof, a drawing bolt (17) with a through-hole (18) through which an air ... | 06/09/1998 |
| 5674031 | Tool holder in particular quick exchange chuck A tool holder comprises a receptacle having one end connectable with a machine spindle, to a receptacle and the like and an opposite end, a head provided on the opposite end and having a coaxial cylindrical head opening, a housing received non-rotatably a... | 10/07/1997 |
| 5599142 | Drilling control apparatus In a drilling control apparatus for properly controlling a load sitting on a drill, a cutting reaction force estimate unit (1) estimates a disturbance load torque Yz acting on a servomotor (feed axis) (63) based on a speed signal X1z to the servomotor (63... | 02/04/1997 |
