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Grinding apparatus for buttons on rock drill bit

一种凿岩钻头、设备的技术，应用在钻孔/钻孔设备、磨削/抛光设备、金属加工设备等方向，能够解决产生振动和噪音等问题

Inactive Publication Date: 2012-04-04
C M E BLASTING & MINING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem with these types of grinders has long been the vibration and noise due to the high speeds, wear, large compressors required for the pneumatic system, and the long grinding time required for each button, among others, Grinding time for large buttons can be as long as 6 minutes or more

Method used

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  • Grinding apparatus for buttons on rock drill bit
  • Grinding apparatus for buttons on rock drill bit
  • Grinding apparatus for buttons on rock drill bit

Examples

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Embodiment Construction

[0038] see figure 1 , 3 , 4, an embodiment of the grinding device according to the invention is generally designated by the reference numeral 1 in these figures. The grinding device 1 comprises: a grinding machine 2; means for holding one or more drill bits to be ground, generally designated by the reference number 3 in the figure; and a support system, generally designated by the reference number 4 . The grinder 2, the means for holding the bit 3, and the support system 4 are arranged to allow relative movement between the grinder 2 and the bit being ground, thereby allowing alignment of the grinder 2 with the longitudinal axis of the button on the bit . Preferably, the grinding apparatus 1 includes a control system having a programmable operator control panel 5 capable of monitoring and adjusting one or more operating parameters. The most concerned working parameters are selected from a set of working parameters, which include feed pressure, rotating speed of the grindin...

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Abstract

The present invention relates to grinding apparatus for grinding the hard metal inserts of rock drill bits, said grinding apparatus having a grinding machine carried on an support system that provides a feed pressure for said grinding machine during grinding, said grinding machine equipped with a grinding pin driven by motor to rotate about its longitudinal axis wherein the grinding cup is rotated at variable speeds and the support system provides a variable feed pressure.

Description

technical field [0001] The present invention relates to improvements in an apparatus for hard metal inserts for rock drill bits (percussion or rotary), tunnel boring machine (TBM) cutting tools, shaft boring machine (RBM) cutting tools or working end, more particularly (but not exclusively), the apparatus is used for grinding cutting teeth or buttons on rock drill bits or cutting tools. Background technique [0002] During drilling operations, the cutting teeth (buttons) on a drill bit or cutting tool become flattened (wear) after continuous use. Regular maintenance of the drill bit or cutting tool can prolong the life of the drill bit / cutting tool, increase the drilling speed, and reduce the cost of drilling. Grinding (sharpening) again to restore it essentially to its original profile. Regrinding should be performed when the wear of the button is preferably 1 / 3 of the button diameter, at most half it. [0003] Various manufacturers have developed many different forms of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B27/04B24B3/33
CPCB24B27/04B24B3/33
Inventor B·舍兰德B·T·舍兰德R·舍兰德
Owner C M E BLASTING & MINING EQUIP
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