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8132991 |
Protection device for a motor spindle
The invention relates to a protection device for a motor spindle (1) arranged in a housing (2), particularly of a machine tool, having an inner ring (6) fixedly joined to the motor spindle (1) and...
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7938194 |
Safety mechanism for a rotary hammer
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...
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7798751 |
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....
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7752763 |
Electric drill
An electric drill having a function for preventing drilling of unexpected oblique hole. Further in the electric drill, when the direction of drilling is displaced in drilling work using the...
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7730963 |
Safety mechanism for a rotary hammer
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...
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7650699 |
Electric drill
An electric drill having a function for preventing drilling of unexpected oblique hole. Further, in the electric drill, when the direction of drilling is displaced in drilling work using the...
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7597512 |
Tapping method, tapping device and punch press
A tapping method for performing a tapping process in a punch press includes engaging a front end of a tap provided at a tapping tool attached to a rotating mold indexing device rotatably provided...
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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...
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7487845 |
Safety mechanism for a rotary hammer
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...
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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...
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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...
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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....
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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5584619 |
Method of and arrangement for preventing accidents during operation of a manually-operated machine tool with a rotatable toolbit
A method of and an arrangement for preventing accidents during operation of a manually-operated machine tool having a rotatable toolbit and a drive motor for driving the toolbit, wherein an...
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5498109 |
Drilling apparatus of hard brittle material and method thereof
A drilling method and a drilling apparatus of a hard brittle material in which a core drill is used for abrasive grinding of high accuracy and high durability. Therefore, the structure of this...
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5401124 |
Hand-held power tool with jamming-detection sensor
A hand-held machine tool has a housing, a tool rotatable about a rotational axis, a motor provided with a gear unit and driving the tool in rotation about the rotational axis, the gear unit having...
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5351039 |
Toolholder device for machine tools
A toolholder device for a machine tool comprises a holder body driven by a machine tool drive spindle, and a toolholder supported on the holder body so as to be circumferentially and axially...
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5349337 |
Apparatus and method for controlling peck drilling
Peck drilling operations using a drilling tool with a rotatable bit are controlled according to the present invention. A control computer is used to detect various drilling conditions, such as dull...
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5342275 |
Tool breakage detecting method
A breakage detecting device is mounted so that the position of the breakage detecting device in a direction parallel to an axial moving path of a spindle is unchanged. The breakage detecting device...
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5295770 |
Air feed peck drill with pneumatic safety system
A pneumatic air feed peck drill adapted to drill in repetitive cycles including a rapid advance phase, a slower drilling phase, and a rapid retract phase. The rapid advance phase ends and the...
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5257531 |
Apparatus for monitoring machining state of drill
An apparatus for monitoring a machining state of a drill according to invention includes: a pressure-contact disk adapted to come into with a board or plate to be machined when a vertical movement...
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5248229 |
Chuck for tool, especially drilling tool
A chuck for a tool, particularly a drilling tool has a shaft receivable in a machine spindle, a sleeve arranged for receiving a fast exchange insert with a tool or directly a tool, a longitudinal...
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5161925 |
Apparatus for bringing a tool to a workpiece and applying axial force thereto, in particular as a tapping machine
A tool head for moving a tool to a workpiece and applying an axial force thereto includes a grooved tubular spindle mounted on a fixed shaft for relative axial and rotational movement. The spindle...
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5155473 |
Torque and thrust overload detection system for a machine tool
A toolholder assembly is divided into a drive toolholder coupled to the drive spindle of a machine tool, and a driven toolholder carrying a cutting tool such as a drill. The driven toolholder is...
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5096339 |
Electromagnetic base drill with antifloating control means
A drill apparatus with an electromagnet base, which has an electric drill directed downwards, is provided with an electromagnet base having an electromagnet for attaching the apparatus to a...
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5090847 |
Pressure foot for microwave drill detection system
A pressure foot for a microwave drill detection system has a cavity in the base, a cover closing the opening into the cavity, with the cover and the base being designed to inhibit microwave...
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5086590 |
Tool checking device for use with numerically controlled machines
A sensing assembly is provided which, by utilizing the CNC machine's M-codes, is adapted to be retrofitted to existing numerical control machines for detecting the excessive wear, chipping,...
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5081763 |
Automated drilling station
An automated drilling station for use in a computer controlled manufacturing system comprising an adjustable frame structure for releasably clamping a work piece in a planar work position, a chuck...
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5062743 |
Drilling device
In a drilling device, a holder is provided that is displaceable with respect to a foot in a feed direction. A drilling machine tool is carried by the holder. An electromotor provides a feed drive...
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5035547 |
Magnet base drill unit
A magnet base drill unit in which the driving of the drill motor and the feed motor of the magnet base drill unit is stopped by operation of the switch which operates on the instant when sliding...
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5032778 |
Apparatus for controlling operating stroke of reciprocating member, using encoder signal
An apparatus for controlling an operating stroke of a reciprocating member to be reciprocated by a drive motor. The apparatus includes an encoder adapted to generate pulses each of which...
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5007776 |
Controller for boring apparatus
A controller for a magnetic base drill unit provided with a safety circuit which is constructed by connecting in series a relay provided with contacts for cutting the power supply to the drill...
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4944643 |
Torque thrust and surface sensing device
A tooling device for numerically controlled machining centers having programmable torque, thrust and surface sensing utilizing a telescopic tool holder comprising an adapter to be retained in the...
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4890306 |
Tool holder for monitoring tool service time
A tool holder for monitoring the service time of a tool holded on the tool holder is disclosed. A sensor and electric circuit are provided for determining whether or not the machining operation...
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