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16
2018-07
The specification model and application field of beneficial coal drill bit?
Specifications of coal drill bits The specifications of coal drill bits are divided into φ28mm-8,φ30-8,φ32mm-8,φ38mm,φ42mm-12 according to the diameter and wing size. The classification of coal drill bit according to different working methods, coal drill bit can be divided into two kinds of dry and wet. Dry drill bit is a drill bit that does not supply dust-reducing water during drilling and the drill bit body has no water supply channel; wet drill bit; drill bit that supplies dust-reducing water during drilling and the drill bit body has water supply channel. According to the different materials of the two wings, the coal drill bit is divided into carbide drill bit and diamond composite sheet (PDC) drill bit. The purpose of the coal drill bit is installed on the coal electric drill, which is mainly used
2018-07-16
15
2018-07
Drill Borehole Deformation Characteristics and Chip Shape
Deformation law and steering of drilling process. However, the drilling of CNC drill is carried out in a semi-enclosed space, and the transverse edge of the cutting angle is unreasonable, which makes the drilling deformation more complicated. The main points are as follows: 1) The inclination angle of the leading edge of the drill core is negative, especially across the blade area, cutting and scraping are granular and extruded. Almost zero diameter CNC drill bit drill core, cutting speed close to zero, but still feed motion, such a difference in the actual back angle for negative chisel area work, equivalent to the wedge angle βOψ chisel into the workpiece, called wedge extrusion. This is the main reason for the increase of the axial force of the CNC drill bit. No. 2) Before drilling with CNC drill bits
2018-07-15
15
2018-07
Drill Deformation Characteristics and Chip Shape of Drill Borehole
Deformation law and steering of drilling process. However, the drilling of CNC drill is carried out in a semi-enclosed space, and the transverse edge of the cutting angle is unreasonable, which makes the drilling deformation more complicated. The main points are as follows: 1) The inclination angle of the leading edge of the drill core is negative, especially across the blade area, cutting and scraping are granular and extruded. Almost zero diameter CNC drill bit drill core, cutting speed close to zero, but still feed motion, such a difference in the actual back angle for negative chisel area work, equivalent to the wedge angle βOψ chisel into the workpiece, called wedge extrusion. This is the main reason for the increase of the axial force of the CNC drill bit. No. 2) Before drilling with CNC drill bits
2018-07-15
13
2018-07
Introduction of 1. geological spiral drill pipe Geological spiral drill pipe is based on the high torque performance of geological drill pipe, using single spiral blade or double spiral blade, processed and welded by prestressed winding process. The drill pipe body is made of high-quality geological special alloy steel pipe, and the drill pipe joint is made of high-quality alloy structural steel. After vacuum conditioning, the fatigue strength and shear strength are greatly improved. Using advanced friction welding production process, the drill pipe has the characteristics of high bending strength and firm welding. The production equipment completely adopts advanced CNC processing equipment, which has the characteristics of high production efficiency and stable quality. Can ensure the need for straightness when drilling deep holes
2018-07-13
13
2018-07
Geological spiral drill pipe-beneficial mining technology
Introduction of 1. geological spiral drill pipe Geological spiral drill pipe is based on the high torque performance of geological drill pipe, using single spiral blade or double spiral blade, processed and welded by prestressed winding process. The drill pipe body is made of high-quality geological special alloy steel pipe, and the drill pipe joint is made of high-quality alloy structural steel. After vacuum conditioning, the fatigue strength and shear strength are greatly improved. Using advanced friction welding production process, the drill pipe has the characteristics of high bending strength and firm welding. The production equipment completely adopts advanced CNC processing equipment, which has the characteristics of high production efficiency and stable quality. Can ensure the need for straightness when drilling deep holes
2018-07-13
12
2018-07
Matters needing attention in cleaning spiral drill pipe parts-Yikuang Technology
Spiral drill pipe, rotary drill pipe are common in the construction of the drill pipe. Today, the editor will talk about the cleaning precautions for spiral drill pipe parts, hoping to help everyone and let everyone know how to clean and maintain. Spiral drill pipe parts cleaning precautions 1, hydraulic parts cleaning should be carried out on a special cleaning table, can not be cleaned anywhere, away from pollution sources, clean the site to be clean. 2. The cleaning fluid of the long auger drill allows the use of kerosene, gasoline and hydraulic oil with the same oil grade as the hydraulic system. 3. The cleaned parts are not allowed to be wiped with cotton, hemp, silk and chemical fiber fabrics to prevent the shedding of fibers from polluting the system. 4, long
2018-07-12
12
2018-07
Matters needing attention in cleaning spiral drill pipe parts-Yikuang Technology
Spiral drill pipe, rotary drill pipe are common in the construction of the drill pipe. Today, the editor will talk about the cleaning precautions for spiral drill pipe parts, hoping to help everyone and let everyone know how to clean and maintain. Spiral drill pipe parts cleaning precautions 1, hydraulic parts cleaning should be carried out on a special cleaning table, can not be cleaned anywhere, away from pollution sources, clean the site to be clean. 2. The cleaning fluid of the long auger drill allows the use of kerosene, gasoline and hydraulic oil with the same oil grade as the hydraulic system. 3. The cleaned parts are not allowed to be wiped with cotton, hemp, silk and chemical fiber fabrics to prevent the shedding of fibers from polluting the system. 4, long
2018-07-12
11
2018-07
Key points of proper use of carbide drill bits
Generally speaking, the application of carbide drill in CNC machining has been very extensive, but the cost of materials is high. It is the responsibility of every machining practitioner to use the drill correctly and make the best use of it. Reasonable use of carbide drill can not only improve product quality but also save costs. The correct use of hard alloy drill bits mainly includes the following aspects: 1. Selecting the correct numerical control drill bits can be applied to numerical control machine tools, machining centers and other high-power, high-rigidity machine tools, and ensuring that the tip runout TIR<0.02. The rocker drill, universal milling and other machine tools due to the power is small, the spindle accuracy is poor, easy to lead to the drill bit.
2018-07-11
10
2018-07
Rotary digging machine drill pipe correct cleaning method
When cleaning the drill pipe of the rotary excavator, we must first understand the cause of the sediment at the bottom of the hole. 1. Residue between bucket teeth of rotary drilling rig and bottom cover of drilling bucket. 2. The bottom cover is not closed tightly. 3. When drilling into mud and sand and flow plastic formation, the drilling slag in the drilling bucket is seriously lost during lifting, and sometimes even all of it is lost in the drilling hole. 4. The soil cut by the edge of the outer edge of the drilling bucket of the rotary drilling rig remains at the edge of the bottom of the hole because the bottom of the hole is a plane that cannot enter the entrance of the cylinder. 5, drilling bucket teeth are sparse arrangement, leakage between teeth is inevitable. 6. The return footage of the drilling bucket is too large, the loading is too full, and the muck is squeezed out from the drainage hole of the top cover. According to the rotary drilling machine method, we
2018-07-10
10
2018-07
Correct Cleaning Method of Drill Pipe of Rotary Digging Machine-Yikuang Technology
When cleaning the drill pipe of the rotary excavator, we must first understand the cause of the sediment at the bottom of the hole. 1. Residue between bucket teeth of rotary drilling rig and bottom cover of drilling bucket. 2. The bottom cover is not closed tightly. 3. When drilling into mud and sand and flow plastic formation, the drilling slag in the drilling bucket is seriously lost during lifting, and sometimes even all of it is lost in the drilling hole. 4. The soil cut by the edge of the outer edge of the drilling bucket of the rotary drilling rig remains at the edge of the bottom of the hole because the bottom of the hole is a plane that cannot enter the entrance of the cylinder. 5, drilling bucket teeth are sparse arrangement, leakage between teeth is inevitable. 6. The return footage of the drilling bucket is too large, the loading is too full, and the muck is squeezed out from the drainage hole of the top cover. According to the rotary drilling machine method, we
2018-07-10
