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Portable power tool with indicating means for actual operation parameter values

A grinding machine, parameter value technology, applied in the direction of registering/indicating machine work, registering/indicating, machine/engine, etc., can solve problems such as high cost, loss of running time indication, production interference grinding machine repair, etc.

Active Publication Date: 2013-12-11
ATLAS COPCO INDAL TECHN AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There is also running time because if the power grinder is used for an accumulated time that exceeds the scheduled maintenance intervals, there is an increased risk of failure and subsequent costly production interruptions and repairs of the grinder Indicated Loss Issues

Method used

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  • Portable power tool with indicating means for actual operation parameter values
  • Portable power tool with indicating means for actual operation parameter values
  • Portable power tool with indicating means for actual operation parameter values

Examples

Experimental program
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Embodiment Construction

[0013] The drawing shows a portable air grinder comprising a housing 10 with a rear handle 11 forming a compressed air supply channel 12 . The handle 11 has at its rear end a connection socket 13 for a compressed air line and includes an air throttle operated by a control lever 14 . The housing 10 also carries a support handle 17 and a safety cover 18 which partially surrounds a grinding wheel 19 connected to a not shown output shaft of the tool. The housing 10 also includes a top cover 22 connected to the main body of the housing 10 by four screws 23 .

[0014] The power grinder also includes a rotating electrical machine in the form of a single-stage turbine comprising a turbine wheel 25 and an oil-lubricated reduction gear 26 . Very fast turbine wheel speeds must be slowed down to safely drive standard grinding wheels, and the lubrication and cooling issues of this high speed transmission 26 require lubricating oil rather than grease. The transmission 26 is enclosed in a ...

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PUM

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Abstract

A portable power tool having a housing with a rotation motor for powering a working implement, wherein sensors are provided to indicate the motor speed and the power supply, and a programmable evaluation unit is arranged to compare indicated speed and pressure values with stored limit values, and to accumulate the total operation time of the power tool and compare that with preset time limits for tool service intervals, and an optical information unit is provided on the housing to indicate whether those stored limit values have been reached.

Description

technical field [0001] The invention relates to a portable pneumatic grinder with an indication device for obtaining information on the values ​​of actual operating parameters. In particular, the present invention relates to a hand-held power grinder including a rotary motor. Background technique [0002] In an air grinder, the operator necessarily has the problem of operating the tool at acceptable operating parameters, ie the correct speed, the correct power supply. This creates uncertainty regarding the safety of the operator as well as the safety and efficiency of the power grinder. If the power grinder is run at too high a rotational speed there may be a risk of the grinding disc exploding, conversely if the power grinder is run at too low a speed the working operation will be inadequate. Too low a speed will also cause excessive wear of the grinding disc. If the air pressure supplied in the power grinder is too high, there may be a risk of damage to the power grinde...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B23/02B24B55/00F01D15/06
CPCB24B23/026B24B49/08B24B23/028F01D15/06B24B55/00B24B49/10G07C3/00F01D15/062
Inventor J·R·C·弗里伯格A·U·尼尔森
Owner ATLAS COPCO INDAL TECHN AB
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