Hilti Aktiengesellschaft

Josef Schittl

Bruno Werder

Michael Selb

John Van Taack-Trakranen

Eduard Sever

Goran Golubovic

Oliver Koslowski

Walter Nessler

Bernhard Brehm

Roland Schaer

Marcus Flock

Christoph Würsch

Guenther Veik

Georg Studer

Bernhard Plunger

Thomas Eriksson

Markus Gmeiner

Urs Zogg

Günther Veik

A flange device and to a method for fastening a saw blade to a drive spindle of a sawing device. Among other things, the flange device includes a nut, which is arranged in a movable manner in an interior of a flange body, wherein, in a closed state of the flange device, the nut surrounds a central screwing device, which is guided in the drive spindle, for the purpose of fastening. A system for fastening a saw blade to a drive spindle of a sawing device, wherein the system has a flange device, and a sawing device and a central screwing device. The drive spindle of the sawing device can be pressed in the direction of the flange device by a spring, such that, in the closed state, it can be received by an interior of the nut of the flange device.

System, method and flange device for fastening a saw blade to a drive spindle of a sawing device

A ring saw blade includes a flat annular support which has a side face and an outer circumference. One or more cutting elements are disposed along the outer circumference. An annular groove is recessed into the side face and has a radially inner flank and a radially outer flank. The radially inner flank is conical and a first cone describing the radially inner flank has a half opening angle of between 10 degrees and 30 degrees.

Ring saw blade

A ring saw includes a ring saw blade, a tool holder that guides the ring saw blade in a cutting plane, a motor, and a driving wheel where the ring saw blade is drivable in the cutting plane by the driving wheel and the driving wheel is coupled to the motor. A guide roller is disposed on a first side of the cutting plane where the ring saw blade is guidable by the guide roller from the first side. A guide roll is disposed on a second side of the cutting plane where the ring saw blade is guidable by the guide roll from the second side. The guide roll is disposed in a hood that is pivotable relative to the cutting plane.

Ring saw

Wall saw having a locking device (). A saw blade flange () of the wall saw is adjustable by the locking device () between a locked state and an unlocked state, wherein, in the locked state, the saw blade flange () is connected to the drive spindle () for rotation therewith, and, in the unlocked state, is adjustable in relation to the drive spindle (). In the unlocked state of the saw blade flange, the drive spindle is blocked in the direction of rotation of the saw blade and is designed to be rotatable about the axis of rotation in a counter direction directed counter to the direction of rotation.

Wall saw having a locking device

An electric power tool for processing a substrate is disclosed. The electric power tool includes a tool which is designed to be rotatable around a rotational axis, a motor assembly having at least one motor which rotates the tool around the rotational axis, a motor housing having at least one receiving area for the at least one motor, a cooling element for cooling the at least one motor, and an electronic assembly having at least one electronic component to be cooled. The cooling of the at least one electronic component to be cooled is carried out via the motor housing.

Electric power tool with an electronic cooling

A device () for adjusting the blade guard holder () arranged on the saw arm () of a wall saw (), having a coupling element () is provided, whereby a first end of the coupling element () is joined to the blade guard holder (), and, in a locked state, a second end is joined to the saw arm ().

Device for adjusting the blade guard holder of a wall saw

A rail-guided power tool () has at least one carrying handle () and one device head () arranged on a guide carriage (). The guide carriage () can be moved by an adjustment mechanism () from a locked position&#x2014;in which the guide carriage () is engaged with a guide rail () via at least one adjustable guide roller ()&#x2014;into a released position&#x2014;in which the at least one adjustable guide roller () is at a distance from the guide rail (). The power tool () also has an unlocking mechanism () including an actuator (), a transmitter () and an unlocking device (), whereby the unlocking mechanism () is configured in one piece.

Rail-guided power tool

For the automatic determination of the diameter of a tool, particularly a saw blade for an automatic wall saw, which is driven by a motor via a gear unit, the moment of inertia of the tool is used as an indicator for its diameter. Three basic solution variants are introduced. In particular, the system including a motor, gear unit and tool is treated as a dual-mass oscillator such that the elasticity of the shafts and gears is arranged as a torsion spring between the inertial masses in two discrete points while taking into account two coefficients of friction including coefficients of the known inertia of the motor rotor (&#x398;) and of the tool (&#x398;). This system can be described by equations which are then simplified by reasonable assumptions or premises. The selected formulations are solved for the moment of inertia of the tool to determine the diameter therefrom and to make an optimal adjustment for the drive possible which is adapted to the respective tool.

Method and device for the automatic determination of the diameter of a round disk-like tool driven by a motor

A saw for cutting hard materials, and including a guide rail ( ) securable to a cut component, a support ( ) displaceable along the guide rail ( ), a saw head ( ) including a drive for driving a saw blade, a guide element along which the saw head ( ) is displaceable within predetermined limits and which is arranged on the support ( ) and extends parallel to the drive shaft of the saw blade-driving drive and which extending transverse to a longitudinal extent of the guide rail ( ) and transverse to the longitudinal extent of the guide rail ( ), and a quick release device ( ) provided between the support ( ) and the saw head ( ) for connecting the saw head ( ) with the support ( ).

Saw for cutting of hard materials

An attachment element, including a base ( ) having a bearing surface ( ), a clamping member ( ), and a ball ( ) extending through a through-bore formed in the clamping member ( ) an axis of which extends transverse to the bearing surface ( ), with the ball ( ) having a connection member ( ) and a counter-support ( ), and with the connection member ( ) being rotatable relative to the ball ( ) and having, at a region thereof adjacent to the base ( ), a bearing element ( ) projecting into the counter-support ( ).

Attachment element for securing a rail foot

A guide rail for an apparatus for processing concrete and rock, especially for concrete saws or for core drilling equipment, including supporting and guiding surfaces extending in the longitudinal direction, for the apparatus housing, and a profile extending parallel to the supporting and guiding surfaces and having contacting edges disposed at regular intervals from one another and extending transversely to the longitudinal direction, for an advancing mechanism provided at the processing apparatus, with the guide rail being formed of a sheet metal profile by bending an elongate, bent part, punched out of sheet metal, with the supporting and guiding surfaces and the profile for the advancing mechanism being integrated as one piece in the sheet metal profile.

Guide rail for equipment for working on concrete and rock

A manually operated cutting device for cutting stones, concrete and similar materials and including a cutting element (90,190) formed of a rotatable ring-shaped support member (50,150) having a circumferential indentation (51,151), and a band-shaped continuous cutting tool (70,170) provided with a plurality of cutting bodies (71,171) and cooperating with the indentation (51,151) of the support member (50,150).

Growing community of inventors

Thueringen, Austria

Josef Schittl