Van nuys, ca 91402 phone 800 4470368 fax 818 7810973. The book is the product of a joint effort between atf and the national firearms act trade and collectors association. The purpose of producing this handbook is to provide basic information and guidelines for the implementation of good shaft alignment for. These highprecision machines are outfitted with tapping and facemilling heads that can produce accurate, repeatable, and smoothsurfaced holes to 3 in diameter and 96 in depth. Trepanning removes the desired diameter by cutting out a solid disk similar to.
Heres a quick comparison of various deep hole drilling methods from our deep hole drilling guide while we can use special gcode such as the conversational programming of gwizard editor to extend the reach beyond. Gundrilling handbook a lot has happened in forty years. A gundrill tool differs from a conventional twist drill by its unique head geometry. If you are using a gun drilling machine they have a highly aligned guide bushing at the part face, but if you are gun drilling on a cnc lathe then you have to create that guide hole first. While we can use special gcode such as the conversational programming of. Expensive slow small sample size extensive site preparation and water supply required. Our manufacturing organization has over 50 years experience in deep hole drilling gundrilling. Gun drilling is possible over a range of depths and diameters. The emphasis is on the theory behind these drilling elements in order to develop a greater understanding of the principles involved in drilling a. For diameters between mm, gun drilling can be performed successfully with special equipment. Rotary drilling rotary drilling uses a sharp, rotating drill bit to dig down through the earths crust. Gun manual for nearly every firearm on the planet ebooks. Other uses include moldmaking, diemaking, and the manufacture of.
Current day cnc capabilities, vastly improved oils and coolants, and significant strides in tooling technology has made the gundrilling job easier, allowing capabilities not possible a few decades ago. The gundrilling handbooks a unique and comprehensive textbook which addresses all of the intricacies of a fairly complex manufacturing process. The topics in the index will give the page numbers of information relating to specific drilling problems which you might face on the rig floor. Drilling is a cutting process that uses a drill bit to cut a hole of circular cross section in solid materials. There are two points of view as to where pumps for mud guns should draw suction from. Tool sharpness, accuracy, tool and machine rigidity, machine spindle bearings wear, general quality of machine, use of drill fixtures, material thermal expansion, and material density variations are some to the reasons hole features will never be manufactured perfect. Formulas and calculations 3 chapter one basic formulas. Competence in solid carbide drilling product handbook drilling. Maximum geological information uncontaminated high quality sampling disadvantages of diamond drilling. They are scans of the pages of actual old catalogs that have been electronically. Gundrilling is a deep hole drilling process that uses a long, thin cutting tool to produce holes in metal at high depthtodiameter ratios. In addition, technology advances so rapidly that new innovations are being introduced constantly. The gundrilling handbook most comprehensive book on the subject in decades. Gun drilling is effective in diameters from 1 50 0.
Deep hole drilling is not a closed book, but can be mastered by anybody as long as certain conditions are adhered to. The main objective of this paper is the development and validation of a three dimensional thermomechanically coupled finite element model for gun drilling aisi 4150 quenched and tempered steel. Read, highlight, and take notes, across web, tablet, and phone. Originally a timeconsuming and costly process, todays technological advances make it a highly efficient manufacturing operation in all metal cutting industries including automotive, aircraft and aerospace, construction, medical, mold and tool. Description contenttegra medical offers gundrilling for customers deep hole requirements. The cleveland twist drill company reprinted by lindsay publications, inc. For drilling depths in excess than 40 x d we recommend the use of two or more gun drills, e. Gun manual for nearly every firearm on the planet ebooks pdf free download links 37 survival downloads and handbooks small arms of the world.
Drilling systems from sterling gun drills half round drill spraymist kits stationary or rotary toolholders resharpening. Prepared by sandia national laboratories albuquerque, new mexico 87185 and livermore, california 94550. They are used for deep drillinga depthtodiameter ratio of 300. The advent of more powerful propellants led to the need for stronger, more dependable steel barrels. Novice or gundrilling oldtimer, the handbook puts the answers in the palm of your hand, with more than ten times the content of the site. Pressure gradient pressure gradient, psift, using mud weight, ppg psift mud weight, ppg x 0. Fundamentals of petroleum engineering drilling operations. During gun drilling simulation, modified gun drill cutting edge rounding and friction law are performed to investigate the effect of tool wear and lubrication on feed force and torque respectively. Our deep hole drilling operating window is as follows.
Deep hole drilling was first developed for the manufacturing of firearms, hence the name gun drilling. Numerous innovations mark walter titexs successful journey. Gun drilling is usually done at high speeds and low feed rates. Drilled hole locations and size variations are cumulative of several manufacturing variables. The purpose of spot drilling is to drill a hole that will act as a guide for drilling the final hole. A practical guide to shaft alignment plant services. Special nose configurations are designed and must be exactly duplicated to obtain repeatability. When ordering gun drills the following must be stated. Main design features are portability and maximum operating depth.
The hole is only drilled part way into the workpiece because it is only used to guide the beginning of the next drilling process. The spinning of the drill bit allows for penetration of even the hardest rock. Noble precision remains at the forefront of gun drilling technology with our multiaxis cnc horizontal drills. National firearms act handbook bureau of alcohol, tobacco. Pressure and flow are delivered via either highpressure main mud pumps or, most often, centrifugal pumps. The most critical element, the tip cuts the hole as it pilots the drill through the work piece, producing precision holes in a single pass. The gun drilling process differs from bta drilling due to coolant entry and chip removal. Sound coiledtubing drilling practices final report february august 2001 prepared for.
A comprehensive guide on gun drills and gundrilling in traditional and. Type of drilling rigs all rigs have the same basic components. Deephole drilling using internally cooled solid carbide highperformance drills with tfl and xpp coating. Pdf effective parameters for improving deep hole drilling. The lagrangian formulation proposed in the fe code deform 3dtm and the constitutive johnsoncook material model were utilized to simulate the chip formation and to. Gun shooting drills spartan basketball skill development pg assist drill with gun 2 3 1 1 player is pg and must get as many assissts as possible under time or passes until team mates miss 3 in a row. Accurate, repeatable holes with excellent surface finishes. Based on the scopeextent of our gun drilling capabilities, noble precision. Drilling is a cutting process that uses a drill bit to cut a hole of circular cross section. Early gun barrels were produced either by rollforging or damascus spiral welding.
Sandia national laboratories is a multiprogram laboratory managed and operated by sandia corporation, a wholly owned. Laser alignment is an essential component of a viable maintenance. Venango machine company is located near erie, pa and is a leader in platen manufacturing and design. If the guide hole is not staight, too loose, or not deep enough it will cause problems. The drilling assembly handbook is broken down into eleven 11 major sections, as described in the table of contents. Gun drills are straight fluted drills which allow cutting fluid either compressed air or a suitable liquid to be injected through the drills hollow body to the cutting face. Gundrilling uses internal coolant, and chips exit through a groove in the tool for a clean and accurate drilling process.
Gundrilling machines precision machines for deep hole gun. In fact, below is a near complete list of calibers that the. The technology of gaining benefit competence in solid carbide. If you like what you see, go directly to the order page to obtain your copy. Tool sharpness, accuracy, tool and machine rigidity, machine spindle bearings wear, general quality of machine, use of drill fixtures, material thermal expansion. Jul 18, 2016 when drilling on an incline surface, the drill is likely to walk down the incline. The gun drilling process is ideal for smaller hole diameters, up to 50 mm 2. Although the principal focus of the handbook is the nfa, the book necessarily covers provisions of the gun control act of 1968 and the arms export control act impacting nfa firearms businesses and collectors.
Milling a flat on the surface, and even spot or pilot drilling into the flat can prevent walking. Both highpressure and lowpressure mud guns agitate mud by means of rapid fluid movement through a nozzle. Department of the interior minerals management service prepared by. Competence in solid carbide drilling this is the strength of walter titex. Experimental gun drilling tests were carried out in steel aisi 4150 for the validation of the developed 3d fe model. Gundrilling machines precision machines for deep hole. Gun drills for drilling depths of more than 40 x d should enter the pilot hole revolving in the left hand direction. Sep 03, 2016 the purpose of spot drilling is to drill a hole that will act as a guide for drilling the final hole. Two flute gundrills are used in nonferrous materials and allow for up to 80% increase in feed rates. Make sure you get the most out of your gundrilling operations. Handbook of best practices for geothermal drilling. This chart defines drill manufacturing process capabilities for ansi size machinist drills. Heres a quick comparison of various deep hole drilling methods from our deep hole drilling guide. One example figure 1 demonstrates the importance of accuracy, even without the use of a deep hole drill.
The gundrilling handbook s a unique and comprehensive textbook which addresses all of the intricacies of a fairly complex manufacturing process. Accordingly, the handbook has become, and remains, the sole reference manual youll appreciate and utilize time and again for as long as youre involved with the gundrilling process. For additional information on how we can provide practical and costeffective solutions for your. Deep hole drilling gundrilling erie, pa venango machine. Gun drilling is the oldest method for deep hole cutting, first used in the manufacture of gun barrels. Gundrilling, gunboring, deep hole drilling or whatever you call it, has come a long way over the years its valuable to know the history of the process in order to understand why it is the way it is, its current limitations, and its future possibilities.
The gun drill was developed to drill such long, straight holes. The positive effects of the gun drilling process are good surface quality, optimized alignment accuracy and low concentricity deviation. The above procedures reduce the probability of breaking the drills primary cutting edge or even chipping a corner on entry. Deep hole cutting is defined as a hole with a depth to diameter ratio greater than 5, and gun drilling excels at ratios greater than 20. Hollow carrier guns are pressuretight steel tubes in which the shaped charges are positioned. Gun drilling cnc horizontol drills noble precision. A comprehensive guide on gun drills and gundrilling in traditional and nontraditional applications compiled in a handy 5.
It was developed specifically for deep hole cutting. The actual mechanics of modern rigs are quite complicated. These are the right tools when you absolutely positively have to drill a hole as deep as possible. Founded in 1890 in frankfurt am main by ludwig gunther, the brand draws on over 120 years experience in drilling metals. The gun drilling handbook pdf download free bittorrentwm. Gundrilling machines are capable of precision holes from 1 50 mm 0.
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