Back-bolt type drilling machine and method for machining back-bolt hole by using same

Abstract

The invention discloses a back-bolt type drilling machine. The back-bolt type drilling machine comprises a machine frame, an operating platform, a cross beam, a stone slab fastening device, an electric cabinet and a drilling device, wherein the operating platform and the cross beam are arranged on the machine frame; the drilling device is arranged on the cross beam; the back-bolt type drilling machine also comprises a hole expanding device which leads the cross beam to move horizontally; the hole expanding device comprises a motor, a speed reducer, an eccentric shaft and an encoder which is used for controlling the rotating number of turns of the eccentric shaft; and one end of the eccentric shaft is connected with the cross beam, and the other end of the eccentric shaft is in transmission connection with the speed reducer driven by the motor. The back-bolt type drilling machine has high machining efficiency; and the bottom surface of a back-bolt hole machined by adopting the back-bolt type drilling machine is smoother, and the back-bolt drilling machine is convenient for dry hanging. The invention also discloses a method for machining the back-bolt hole by using the back-bolt type drilling machine. The method is characterized by comprising the steps of firstly drilling a hole according to the depth and then driving a rotary drill bit to move horizontally. The machining mode has smaller crushing strength on a stone slab. When being machined, the stone slab is not easy to grind, i.e. the machining yield of the stone slab is higher.

Description

technical field [0001] The invention relates to a drilling machine for processing back-bolt holes of dry-hanging stone slabs, in particular to a back-bolt drilling machine with stable processing quality, high precision, high production efficiency and high degree of automation. The invention also relates to the drilling method of the back bolt type drilling machine. Background technique [0002] Due to the improvement of people's requirements for the quality of life, the comfort, beauty and safety of the quality of the living environment have gradually been paid attention to. Stone is widely used in the interior, exterior walls and landscaping of buildings. Stone curtain walls have gone through the wet paste method in the 1980s and 1990s to the dry hanging method up to now. Because the back-bolt dry-hanging method has the advantages of fast construction speed, good construction quality, easy stone maintenance, good earthquake resistance, impact resistance, and no disease, it...

AI Technical Summary

Problems solved by technology

In order to process the steps, the existing processing methods such as Figure 4 and Figure 5 As shown, the drill bit 2'' has an upper cutter head 21'' and a lower cutter head 22''. The drill bit 2'' first drills down vertically to the specified depth of the stone plate 4'', and then the spindle 1'' deflects and drills the hole , due to the limitations of the working mode of the main shaft 1'', the upper part of the drill bit 2'' cannot perform a large-angle swing motion, so the size of the processed steps is too small, which is difficult to meet the needs of engineering construction, and it can be seen from the figure , the shape of the step 6'' processed by this method is irregular (curved surface), and at the same time refer to Image 6 , when in use, the upper part of the anchor bolt 5'' is suspended on the arc surface of the step 6'', which causes the effective connection length of the anchor bolt 5'' to be shortened, and the connection is prone to loosening, and long-term use will also cause safety hazards

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