Technical innovation of drilling tools
Overshot go into the heart of the drill pipe, the slider move up, make the tube socket head can be inserted into the center, when on the slider move up tight, using friction lift drill, remove loose again after the slider, by means of the connection string to slide along the block should tighten, set aside the center pipe, but in front of the salvage must first determine the bit in the bottom of the hole position, can be in a thin plate with bolts tight end of drill pipe, Drop the drill pipe to the bottom of the hole and press it on the drill bit. After waiting for a moment, it is proposed that the relative position of the drill bit at the bottom of the hole and the center of the rotary plate of the drill can be determined by observing the indentation left by the center pipe of the drill bit on the board, and then move the drill or rotary plate so that the center of the rotary plate is directly in front of the center pipe of the injured head, so as to ensure that the fishing device can be inserted into the center pipe accurately.
Overshot Assembly,Fishing Tools,Overshot Assembly For Sale,Overshot Fishing Assembly wuxi shengmeirun trading co.,ltd. , https://www.wxsmrxz.com
In different manufacturing industries, such as automobiles, medical appliances, aerospace, and general engineering, manufacturers can choose from a variety of advanced drilling tools, including solid carbide drills with high drilling rates, indexable inserts, and Carbide drill-edge drills, as well as the use of an increasing number of multi-purpose Drill Bits, for drilling small holes, deep holes, and drilling, chamfering, boring, etc. at one time without further secondary processing machining.
Toolmakers are taking advantage of technological advances in tool geometry, base materials and surface coatings, continually introducing new tool varieties, expanding existing product lines, and customizing custom-designed tools to standard delivery products.
The technological advances of CNC machine tools (especially machining centers), Swiss-type turning centers and long bed lathes that optimize the machining performance of long drills also give full play to the advantages of advanced drilling tools. The high rigidity of modern machine tools and the ability to deliver large amounts of coolant at high pressures are also critical for drilling.
In metal cutting, shortening the processing time is one of the main goals that people pursue, and it is no exception for hole machining. In addition, some industries require high precision for the holes and also apply additional pressure to the hole machining. For example, the medical and aerospace industries have high requirements for the accuracy of the hole's runout accuracy and tool life. Manufacturers also face the challenge of processing advanced workpiece materials such as titanium alloys, Inconel alloys, cobalt-chromium alloys, and more.
Solid carbide drills are still due to their high rigidity and four other design features that are still performing – carbide coatings, bit geometry, tape width and back taper (usually to φ25mm). It is a good processing choice. The most effective coating design is a multi-layered PVD coating (the top layer is a smooth layer that prevents chip bonding), which combines with a tough carbide substrate with good chipping resistance to allow the drill to be used more High feed rate for processing. The bit geometry needs to be designed for each specific workpiece material, including difficult to machine materials. The reasonable design of the width of the drill bit can improve the drilling accuracy and drilling capability of the drill bit. The size of the back taper affects the contact surface of the machined hole with the drill bit, so it must be precisely designed according to different materials to avoid shortening tool life due to friction.
The minimum amount of lubrication (MQL) drill bit, AGPower long drill bit, cobalt high speed steel non-internal cooling drill bit and TiAlN coated drill bit developed by Nachi America Inc.'s tool division have been obtained at Ford, GM and Honda automotive plants. Successfully applied, the number of oil holes drilled on the crankshaft can be doubled compared to powder metal drill bits, and the machining cost per workpiece is reduced by 50%.
The multi-hole machining tool is extremely valuable for shortening machining time and omitting secondary machining. As a manufacturer of precision rotary tool chucks and other integral mating tool systems, manufacturing engineers at Ingersoll Cutting Tools have realized that the combination of drilling, chamfering and boring functions into one tool The high precision required for machining the shank pull can be achieved. To this end, they developed a Qwik Twist interchangeable drill bit with multiple functions. The drill bit is used for drilling, boring and chamfering on the 4000 series alloy steel rivets (aperture φ22.2mm, hole depth 98.3mm), and the processing time can be shortened by more than 7 minutes. Now, Qwik Twist multi-purpose drills have been included in Ingersoll's range of hole machining tools and have been designed and manufactured by technical teams.
In order to integrate the drilling and chamfering functions into one tool, Sumitomo Electric developed two machining systems. One is suitable for solid carbide drills; the other is suitable for SMD interchangeable carbide drills. Among them, the SumiChamfer system firmly nests a ring-shaped chamfered head on the drill body of the solid carbide drill bit, and then clamps it on the collet chuck for processing. There are 3 types of chamfering rings, which can be used for drilling and chamfering in 4~20mm aperture size. The system uses the industry standard ER series collet chuck. As the machining hole diameter increases, the larger clamping jaw with larger clamping force is used [ER20 ​​(4mm), ER25 (9.4mm), ER32 (14.0mm). ]. Two SumiChamfer standard inserts are available for machining, and one ACZ310 grade insert is suitable for machining all workpiece materials. Sumitomo Electric has also developed the SMD sumiChamfer series of chamfer rings for interchangeable drill-edge SMD drills for standard SMD drills in metric or inch sizes from 12 to 22.5 mm. The SMD chamfering ring uses the standard sumiChamfer type inserts, which are available in both chipbreaker and chipless slots, all using the ACZ310 grade.
The drill bit with replaceable carbide tip has the ability to complete a set of hole size machining with a high speed steel drill body, which reduces tooling and reduces machining costs. Precision Twist Drill Co. has developed the Hydra Drill interchangeable drill-type internal cooling drill with a depth of 3 and 5 times the bore, available in both imperial and metric ranges, with a bore size range of 14 ~22.5mm, suitable for drilling off-road equipment, automobiles and other similar parts on the machining center where the spindle can be used for coolant. Designed for high-volume machining, this bit can be used as an alternative to solid carbide drills. Each size of high-speed steel drill body can be configured with up to 5 different sizes of drill tips, each of which can cover a hole diameter of approximately 1.5 mm. . The Hydra Drill bit allows easy replacement of the drill tip without removing the drill body from the spindle. It can process a wide range of workpiece materials including cast iron, steel, stainless steel, nickel-based alloys, titanium alloys and more.
MA Ford Mfg. Co. Inc. recognizes the growing importance of the multi-functional machining capabilities of carbide drills, and has established a dedicated tool division for the design and development of drilling, boring and chamfering functions. An integrated multi-function drill. This type of drill has a wide range of applications, especially for the efficient machining of automotive parts. The drill diameter ranges from 6.4 to 12.7 mm and the maximum chip pocket length is 254 mm. Deep holes with a hole depth of 15 to 20 times can be drilled on the crankshaft.
In order to meet the needs of different drill types and specifications for processing a wide range of workpiece materials, MA Ford also introduced a new standard drill series. This series of drills can process a wide range of workpiece materials from low carbon steel to nickel based alloys, Inconel alloys and titanium alloys. For different machining objects, the drill design uses different chip flute taper, chisel edge and back taper angle, and the surface coating matched with the machining is selected to improve the drilling speed, production efficiency and tool life.
BIG Kaiser Precision Tooling Inc. has introduced two new Sphinx solid carbide drills (with a hole diameter of 6 times). Among them, the Phoenix drill bit is used to machine small holes with a hole diameter of 1 to 4 mm; Quadro 15
The Plus drill bit is used to machine holes with a hole diameter of 4 to 20 mm. The Phoenix drill bit is designed for high speed, high feed rate drilling on steel, stainless steel, cast iron and non-ferrous materials. It features an internal cooling design for drills over 2.5 mm in diameter and uses the Futura Nano Top from Balzers. TiAlN coating to improve the wear resistance and chip removal capability of the drill bit. The Quadro 15 Plus drill features a special 6-blade drill tip geometry, ultra-fine grained carbide material and a 15° helix angle for long steel cuttings such as steel and cast iron with a drilling accuracy of H7. Therefore no further finishing is required.
The Picco-MF multi-function indexable tool developed by Iscar Metals Inc. combines precision small hole drilling with surface turning, external turning and bore turning/boring. The DR-MF series of tools are designed to process micro-parts used in the automotive, mold, aerospace, medical and general engineering industries on Swiss-type machines. They feature two cutting edges for drilling and turning. . The large helix angle cutting edge is designed to minimize cutting forces and achieve optimum chip control at low speed feeds. The XCMT insert features an IC908 grade submicron cemented carbide substrate and a TiAlN multilayer coating. The tool can be used for both right hand and left hand cutting. In order to enhance wear resistance, reduce surface friction to improve chip evacuation performance and prevent clogging, the body is coated with a coating having a hardness of HRC60.
OSG Tap & Die Inc.'s Exocarb-Max ultra-long drill bit (FTO-GDXL) developed for drilling deep holes can drill hole depths of 30 times at a time, eliminating the need for segmental drilling, machining time It can be shortened by 15 times compared with gun drilling. The drill is internally cooled and TiAlN coated with a drill diameter range of 2.5 to 20 mm.
Small holes and deep hole drilling have always been challenging machining challenges. The MSE (Mini Star) solid carbide drill provided by Mitsubishi Materials USA Corp. has a diameter ranging from 0.1 to 0.99 mm (in increments of 0.01 mm). This drill is specifically designed to drill precision micro-holes in metal parts such as medical parts on Swiss-type machines. Mitsubishi Materials has also added new deep hole drilling capabilities to its small hole drills for 1 to 3 mm bore machining. The MWS internal cooling drill is characterized by a long spiral groove and a wave cutting edge, which can improve the chip breaking and chip removal ability when drilling deep holes with a diameter of 10 times. The drill can process steel, stainless steel, Workpiece materials such as alloy steel and nickel-based alloy. Mitsubishi Materials' new solid carbide super long drill standard series also uses MWS-type wave cutting edges. The drill bit with a diameter of 3 to 5 mm can drill deep holes with a diameter of 30 times.
Kennametal Inc.'s HTS drilling system features the ability to drill large diameter deep holes. The HTS drilling system has a diameter range of 38 to 269 mm, a drilling depth of 1.8 to 2.4 m (8 times aperture), and a custom drill with a diameter of 381 mm. This modular drilling system has a set of inserts on the cutting head that can be adjusted over the diameter of the machining. The drilling system is capable of processing a variety of workpiece materials other than special hard materials, including steel, stainless steel, gray cast iron, ductile iron, titanium alloys, Inconel alloys, and the like. Examples of the application include: drilling a large diameter deep hole with a diameter of 305 mm and a hole depth of 1.8 to 2.4 m on a steel-made paper roll; and drilling two holes having a diameter of 101.6 mm and a depth of 0.61 m on the K-Monel cast iron material. Then, the workpiece is indexed by 180° and then drilled again, and finally two holes with a depth of 1.22 m are machined. For this deep hole drilling process, the machine tool is required to have high rigidity, and a large amount of coolant should be added to help discharge a large amount of chips generated by the machining.
The CoroDrill 805 modular indexable drill from Sandvik Coromant Co. features a CoroDrill 800 drill with excellent chip evacuation and internal cooling. The CoroDrill 805 drill bit is designed to drill deep holes in conventional machine tools such as machining centers, lathes and car-milling machines without having to move the workpiece to a dedicated deep hole drilling machine for machining. The drill has a processing diameter ranging from 25 to 65 mm, a hole depth of up to 13 times the aperture, and a surface roughness Ra of 32 μm.
Walter Inc.'s Xtra-tec B401x series of drills has been expanded to include 60 new drill diameter sizes, 2 tool material grades and various geometric drills designed for machining steel, cast iron and stainless steel. type. The drills are 3, 5 and 7 times the length of the drills, and the drilling feed rate is doubled compared to conventional indexable inserts, and the dimensional accuracy and surface finish of the machined holes are high. The B401x series of drill bits feature a fully hardened drill body and a nickel-based protective coating to reduce friction and erosion with the chips. The drill has a diameter range of 13 to 31 mm and the drill bit is designed with a positive blade shape and a spiral groove similar to a high speed steel drill bit.
It is easy to imagine using a circular drill bit to drill a circular hole. However, in some very difficult machining situations, a square drill bit is required to drill a circular hole. Square drill bits are primarily used to remove high speed wire cones that break in the holes. The Omegadrill square drill developed by T3 Enterprises Inc. uses a square groove design to provide the stiffness and strength required for the drill under extreme drilling conditions. The square chip flute outside the drill bit enhances the cross-section stiffness of the drill bit, allowing it to drill through the core of the broken tap. The taper chip flakes remaining in the hole after drilling can be easily cut with a needle or a needle. Remove. Omegadrill drills are made of carbide and use a negative tip geometry to drill high hardness materials up to HRC70. Other uses for the drill include drilling to remove twist drills, pins and screw extractors that are broken into the holes. It can process a variety of high-hard materials such as stellite, chilled cast iron, hardened steel, and even granite.