When a cutting tool crashes, the toolholder breaks off and protects the spindle, thus reducing repair costs and machine downtime. The spindle assembly is one of the weakest parts in the machine tool and contributes to. Possible applications a spindle for any application. When a cutting tool crashes, the toolholder breaks off and protects the. The programme is completed by the ax cartridge that was especially developed for discshaped tools, e. The idea to create an extremely rigid connection between the tool and spindle by placing the clamping element directly against the internal spindle contour, reached its design limits, due to the cross sections and. Equipment variations coolant feed page 42 additional support page 49 stop block page 47 benz i.
Robust casting design and large rollertype linear guides ensure that the entire a71nx work envelope can be effectively utilized. Cutting tools are usually mounted in toolholders that are pulled into the spindle by a. The adapter is mounted on the existing spindle and aligned so that runout is close to 0. The hsk a63 option has been integrated into our previous 40t 15k inline spindle design, and this will be built on our production floor. Steptec spindles are prepared for medical applications. One of the more common tapers now offered for highspeed machining is the hsk spindle. Perske electric motor spindle with hskf63 automatic tool. Versatile two different milling head options are available. Hsk uses a simultaneous fit between the short taper and the face of the spindle.
With its hollow design, however, the hsk shank acts as a fuse during collisions. The spindle must be absolutely dripfree to avoid contamination of the work piece. Grinding and milling spindles without interfering edge, cylindrical spindle housing. Aug 01, 2003 hsk spindles with the downfalls listed above with standard 724 tapered tooling, the industry was forced to offer different spindle options for higher rpms. Parameters effecting the successful build of a spindle fig 2. International journal for ignited minds ijimiinds design.
Com page 41 caxis functionality page 38 2 interchangeable multispindle heads replacing the angle head desired tool holder machine type individual machining drilling pattern. Spindle solutions weiss spindeltechnologie gmbh, spindle. Hsk chucks and spindle tooling are available in several varieties, including er collet chucks, which are specially designed for use with er collets. Bottom line the hsk interface also offers some key advantages in relation to high speed machine spindles, tool collisions and maintenance. In addition, spindles with hskt shaft and clamping of the spindle shaft. A very sophisticated and capable spindle design will not be acceptable on. They are modu lar in design, comprising the externally driven spindle unit with toolworkpiece holder and the motor for driving the spindle. In both cases, the spindle holds the cutting tool, and the work piece is fastened on a table that can be moved in three axes. Tool mountings with hsk c hsk a hsk tool blankes 8035 hsk clamping chucks 8037 hsk drill chuck 8038 hsk slipon cutter arbor 8039 hsk quick change tapping chuck 8040 hsk test bar 8041 hsk adapter sleeves 8042 hsk adapter 8046 absmounting with hsk a shaft 8047 hsk plug 8048 accessories 8048 hydraulic clamping head hydraulic clamping head 8049.
An hsk connection depends on a combination of axial clamping forces and tapershank interference. Manufactured in accordance with din 69893, it is designed for use with automatic tool changers. A retention knob keeps the tool holder in the spindle. There is no quick answer to which interface is best it is really dependent on the components to be machined and the operations being carried out. Hsk was originally developed in germany, and it contains a short 110th hollow taper. The spiral beveled gears allow for high rigidity and smooth machining operations. The a71nx shares the key nx family machine technologies that take part productivity, accuracy and machine reliability to the next level. Slim, low profile perske motor design allows deeper cutting depth and performance lifetime lubricated, high precision angular contact bearings with double. In most cases where a spindle adapter is installed, hsk shanks are changed. By doing so, a highly accurate centring and fixed axial position of the holder in the spindle is granted with a high repetitive accuracy when exchanging the tools.
A comprehensive publication on hsk tooling technology. Pdf this paper presents an expert spindle design system strategy which is based on the efficient utilization of past design experience, the laws of. High speed spindles for manual tool change gmn usa. A wide variety of hsk spindles options are available to you, such as drive, application. How to choose machine spindle interface is a key decision as this often defines the limitations on metal cutting efficiency. The holder is clamped via its taper with flange contact surface. The polygonal taperface connection, known as psc, is now also standardized as iso 26623, and in the early 1990s, the hsk system started being employed on machines in europe and later became din 69893 and. Because a cat sk, bt shank is solid steel, most of the collision load and damage transfers to the spindle.
The hsk handbook is recommended for end users involved in the implementation of hsk tooling, machine tool companies and distributors of cnc centers with hsk spindles, tooling departments responsible for hsk specifications, developers of hsk equipment and professionals looking for new tooling solutions for high speedhigh rigidity machining. Hsk provides dual contact between the spindle face and taper while a conventional vtaper only makes taper contact. High performance tooling for makino mag machines with hskf80. With this selection of mapal clamping systems it is possible to securely clamp all hsk forms. Hsk spindle tooling utilises a hollow shank, with a clamping mechanism which operates from the inside. Study unit toolholding systems workforce development. For tight machine compartments with small spindle spacings mapal offers the ds clamping cartridge. Manual hsk clamping technology 18 clamping tools with hska 36 clamping tools with hskc 78 clamping tools with hskt 96 clamping tools with flange module 100 clamping tools with cylindrical shank 110 clamping tools with iso clamping tools with bt and cat flange module 158 floating holders 178 accessories, spare parts. High performance tooling for makino mag machines with. By the time you get to the level of the rebuilder or the job shop making an hsk spindle shaft for a manufacturer, the likelihood of finding a good, certified gauge is slim indeed. Ak hsk a63, 18,000 rpm, 38kw, plugin spindle particularly servicefriendly hsk quick change spindles for highperformance milling with compact design and grease bearing instead of oilair lubrication. A spindle is a device that locates a toolholder and serves as an attachment point in the machine tool. Although these standards may seem evident, for the spindle designer to design they represent a broad range of needs that are rather.
Ball end spindle runout test arbors are designed checking positioning accuracy of 5axis machines, but can also be used in place of a standard runout test bars when a shorter length is required or for a touchoff point from the spindle face ball end is. Our angle heads are assembled with high precision, p4 quality spindle bearings that are stabilized for high speeds up to 15,000 rpm and high torques up to 110. All these forces are generated and controlled by the mating components design parameters. Siemens ag, sinamics s120 synchronous builtin motors 1fe1 configuration manual. In the din 698931 hska interface design an additional torque transmission takes place at the taper shank with drive. Hsk spindles with the downfalls listed above with standard 724 tapered tooling, the industry was forced to offer different spindle options for higher rpms. Makinos 45,000rpm, hske32 spindlebased upon its patented corecooling, underrace and jacket spindle temperature control systemvirtually eliminates thermal growth, deflection or vibration, even during long hours of highspeed machining. Manual hsk clamping technology 18 clamping tools with hsk a 36 clamping tools with hsk c 78 clamping tools with hsk t 96 clamping tools with flange module 100 clamping tools with cylindrical shank 110 clamping tools with iso clamping tools with bt and cat flange module 158 floating holders 178 accessories, spare parts. Highspeed integrated motor spindle for machining centers nsk. Automatic hsk clamping set standard in compact design. The hsk a63 utilizes clamping unit style b by ottjakob. Our modulardesigned spindles and indepth engineering knowledge of the complete spindle assembly means we can quickly design and build spindles that perfectly match your unique application.
If, at the same time, the requirement is to achieve consistently and previously unattainable high levels of accuracy and surface finish, steptec is the right choice. If an exchangeable spindle for sa type is required, please manufacture one according to. Hoyt, hereby grant permission to the waiiace library ofthe rochester institute oftechnoiogy to reproduce my thesis in whole or in part. Highspeed doublecolumn bridge design cnc machining centers. The shank and spindle both must have precisely mating tapers and faces that are square to the tapers axis. Cartridge spindles features 1 cartridge design allows for easy mounting to brackets and convenient for atc, as the cartridge spindle for machining 3 highly precise and rigid main spindles for nc lathes are also available. Perske electric motor spindle with hskf63 automatic tool changing system ideal for shaping and cutting applications of various materials. Many shops would like to take advantage of the hsk design, but they do not have machines equipped with an hsk spindle.
Standard hsk grippers for hsc workpiece machining the clamping forces according to din 69893 are frequently no longer sufficient. In the din 698931 hsk a interface design an additional torque transmission takes place at the taper shank with drive. Conventional spindles are the most popular type of spindle in machine tools. Spindles and their relationship to highspeed toolholders.
Machining of medical implants holds the toughest standards for precision and dry air milling. Highfrequency spindles hsc, hpc, robot spindles highfrequency spindle hsge 198. From diameter 35mm to 2mm, versions up to 180,000rpm. Our angle heads are equipped with hardened and ground gears and collet shafts. Feed options include manual, electric, and pneumatic. You can see the key difference between bt and hsk tool holders in their anatomy. May 18, 2011 one of the big differences between hsk, short taper toolholders is the way the tool fits into the machine tool spindle. The a71nx is a 500mm, 50taper production horizontal machining center. The next generation of spindle shaper is here the reputation for performance on northtechs new spindle shaper begins with the design of hsk spindle.
About 48% of these are machine tool spindle, 12% are tool holder. The spindle incorporates motor between bearings at front. The stability of the doublecolumn, the ladder design of the zaxis, and the overall weight of the bx highspeed milling machines provide exceptional accuracy, thermal compensation, and outstanding surface finish capabilities. The motor and spindle are connected to one another either via a belt or via a coupling. Nsks design technology combined with its outstanding. A precision machined interface between spindle and tool, it is balanced to g2. If an exchangeable spindle for sa type is required, please manufacture one according to this figure. At microlab, our aim is to manufacture spindles with precise technical specifications and follow stepbystep procedures for quality control. Hsk quick change spindles for highperformance milling with compact design and.
Ball end spindle runout test arbors are designed checking positioning accuracy of 5axis machines, but can also be used in place of a standard runout test bars when a shorter length is required or for a touchoff point from the spindle face ball end is ideal for this purpose. The right spindle for any application possible applications 45. Hsk hohlschaftkegel, translated from the german language means hollow shank taper which is the part of an hsk tool holder that connects to the. Hsk spindle contour with clamping set hsk c 8019 hsk d 8019 hsk automatic clamping set hsk clamping set standard 8020 hsk clamping set high speed with guided collet 8024. Expert spindle design system article pdf available in international journal of machine tools and manufacture 4545. Form e was developed for high speed without drive dogs. System design interchangeable multispindle heads system design optional. Difference between bt and hsk tool holders tool holder exchange. Valenite provides a special hsk adapter for these end users. Generally, tool holders also called collet chuck or collet holder have four partsl the retention knobs or pull studs, the taper, the vflange, and the collet pocket. Hsk manual clamping set 8020 hsk manual clamping set technical features technical features. Although these standards may seem evident, for the spindle designer to design they represent a broad range of needs that are rather demanding to meet and improve in one design. Identical hsk hollow taper shaft interfaces identical electrical connections identical design space compact design high precision performance enhancement for cutting threads benefits at a glance. Please note that the practical spindle speed may be considerably influenced by the.
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