Segmented platens offer sanding precision.Many veneers offered to today's wood-working operations have become thinner and thinner. In addition to using more care in layup operations to eliminate telegraphing and adhesive bleed through, today's operations must also be careful when sanding veneered panels because applying too much sanding pressure on veneers will often result in sandthrough. "Achieving the surface needed to get consistent stain and texture results in a wood product used to mean hand sanding all parts with block sanders, a time consuming and often difficult operation requiring many skilled labor hours," said Doug Armitage, technical sales manager sales manager n → gerente m/f de ventas sales manager n → directeur commercial sales manager sale n → with Force Machinery Co. "This was necessary because parts of varying thickness would not have the same surface finish, and older style widebelts would leave a streaky streak·y adj. streak·i·er, streak·i·est 1. Marked with, characterized by, or occurring in streaks. 2. Variable or uneven in character or quality. finish. In many shops, veneered parts would not be sanded with a widebelt at all because of the danger of sandthrough." Enter segmented platen A long, thin cylinder in a typewriter or printer that guides the paper through it and serves as a backstop for the printing mechanism to bang into. It is typically made of a hard rubber or rubber-like material. See carriage and typewriter. sanders. An increasing amount of widebelt sanders offered on the market today feature segmented platens because they allow sanding operations to sand at higher tolerances, and as a result, sandthrough is reduced. "Segmented platens are adjustable for stroke and pressure," said Gene Brooks, marketing/sales director with Cemco. "This makes them less susceptible to sandthrough or dubbing dubbing removal of most of the comb of day-old chickens. See also decombing. ." Understanding how segmented platen machines function, what their best applications are and what controlling devices are available can all help a manufacturer choose the correct sanding machine for his operation. How they function Segmented platen sanding machines are able to sense the contours of a part because of individual sensors in the platen. "They are used to conform to Verb 1. conform to - satisfy a condition or restriction; "Does this paper meet the requirements for the degree?" fit, meet coordinate - be co-ordinated; "These activities coordinate well" the workpiece Noun 1. workpiece - work consisting of a piece of metal being machined piece of work, work - a product produced or accomplished through the effort or activity or agency of a person or thing; "it is not regarded as one of his more memorable works"; "the symphony was surface, thereby eliminating sandthroughs," said Robert Cerza, vice president of marketing with Timesavers. "Very accurate pressure is applied and control is provided through a CNC (Computerized Numerical Control) See numerical control. CNC - Collaborative Networked Communication controller." Most segmented pad widebelt machines feature either pneumatic or springloaded individual pads which control sanding pressure on a piece. These pads use sensor rollers to sense the shape of the part as it is fed into the machine. The corresponding pad, or segment, is activated with an automatic timer to compensate for speed variation. The segment does not sense shape. The job of the pad is to push the abrasive belt to the surface of the material because the stroke of a well-built segmented pad has a uniform pressure. The result is a uniform sanded surface. "There are encoders at the front of the machine that pick up the highs and lows of the panel," said Colin Johnson Colin Johnson is the current Anglican Bishop of Toronto. He is an alumnus of Trinity College in the University of Toronto. The Right Reverend Colin Robert Johnson is the 11th Diocesan Bishop of Toronto [1]. , sales/product manager of widebelt sanders with SCMI SCMI Southern California Marine Institute (Terminal Island, CA) SCMI Supply Chain Management Institute SCMI South Carolina Military Institute . "This controls the electronic pistons that adjust the platen up and down. This system eliminates sandthrough and areas that are not sanded." Examine the application For a woodworking operation to consider a sanding machine with a segmented platen, it must carefully examine the parts to be sanded. Segmented platen sanding machines have their strengths in parts which have a wide variation in thicknesses, such as chair seats. Segmented platens allow the platens to fill in the areas that require sanding by following the contour of the chair seat. "This segmented pressure pad A pressure pad may be a trigger (pad) activated by weight often used as part of a security system. Supermarkets and big-box retailers often install pressure pads on their entrance and exit doors so that they open automatically when a customer with a shopping cart approaches. design allows for the utmost in safety for the workpiece to be sanded," said Armitage. "Thickness variations of up to 2mm are automatically compensated for, and running uncalibrated core veneered materials is no problem at all. Additionally the edges of panels, veneered or lacquered lac·quer n. 1. Any of various clear or colored synthetic coatings made by dissolving nitrocellulose or other cellulose derivatives together with plasticizers and pigments in a mixture of volatile solvents and used to impart a high gloss to , are not difficult to sand, even when feeding multiple parts side by side with minimal separation." However, companies sanding solid wood parts or panels may be able to successfully sand and receive an acceptable finish with non-segmented pad sanders. Although more affordable than segmented pad machines, attention must be paid to keeping non-segmented pad machines within specifications. "There are many good non-segmented pad machines available for a low price," said Armitage. "This type of machine will still do a fair job if kept in tune in limited applications." CNC controls Computer numeric controlled (CNC) machines, perhaps more applicable to panel saws and routers, are making roads into sanding machinery because of the variety of benefits they can offer users. "CNC controls on sanding equipment can control such functions as electronic sectional platen, sanding head selection, the speed of the sanding head, the speed of the feed mat, program selection and the ability to program parts," said Johnson. In addition to precision machine operation, CNC controllers can help tabulate (1) To arrange data into a columnar format. (2) To sum and print totals. sander production costs and parts production. "CNC controllers have the ability to have a complete history of abrasive use per part and amount of pieces per run," said Cerza. "This helps companies have a better handle on their actual cost to manufacture. Also, the ability to bar code parts for full automatic setup is accomplished through CNC controls." Necessary additional equipment If a company is interested in purchasing a segmented platen sander, they will also need to purchase some additional components that may not be included in the price of the machine. "You must have some other important features to make the segmented platen work correctly," said Armitage. "These include a digital readout (1) A small display device that typically shows only a few digits or a couple of lines of data. (2) Any display screen or panel. for gauging thickness, a high-quality abrasive belt with the flexibility required to conform to the pressure pad, and a felt-backed pressure insert to allow the operator to smooth the surface correctly." Evaluate your operation An example of a company's sanding goals, and the necessary equipment needed with a segmented platen machine, is a good starting point Noun 1. starting point - earliest limiting point terminus a quo commencement, get-go, offset, outset, showtime, starting time, beginning, start, kickoff, first - the time at which something is supposed to begin; "they got an early start"; "she knew from the when considering a segmented platen sander purchase. Some shops which have made the switch to electric segmented platen machines are pleased with the results. "We started with a two-head machine, but the problem was that the machine would sometimes sand through veneered panels," said Joseph Harden of The Woodworks, a New Hampshire-based woodworking operation. "We purchased a segmented platen machine and the difference in surface quality out of the machine is night and day. Sealer sealer, n a substance used to fill the space around silver or gutta-percha points in a pulp canal. Most contain some combination of zinc, barium, and bismuth salts and eugenol, Canadian balsam, and eucalyptol. sanding quality is overwhelming. Because of the variety of products and sizes and thicknesses we do, we never thought the new sander could do it. But the finish is better than you could ever do by hand, even if you wanted to waste all the time and manpower." Available sanding equipment The following is some of the widebelt and profile sanding equipment available to the woodworking industry. For more information, circle the corresponding numbers on the Reader's Service Card or consult the Red Book Buyer's Specification Guide. Widebelt sanders The Heesemann LSM LSM Linux Software Map LSM Louisiana State Museum LSM Linux Security Module LSM Living Stream Ministry LSM Laser Scanning Microscopy LSM Legato Storage Manager LSM Land-Surface Model LSM Lutheran Student Movement LSM Logical Storage Manager 8 automatic sanding machine from IMA (Interactive Multimedia Association, Annapolis, MD) An earlier trade association founded in 1988 originally as the Interactive Video Industry Association. It provided an open process for adopting existing technologies and was involved in subjects such as networked services, scripting - European Woodworking is engineered and constructed as a modular system from single up to five sanding units in any combination and sequence. Machines can be configured to meet the customer's unique sanding objectives. The machine can be equipped with CNC, vacuum bed A vacuum bed (also known as a vac bed) is a rubber device used for the purposes of rubber fetishism and bondage. It is usually comprised of two sheets of latex or a rectangular latex bag secured by a metal or plastic tube frame, used for sealing a person inside. , electronic control pressure beam, or computer-controlled selective pressure regulation. Circle #273 The Sandya 90 widebelt sander from SCMI is designed to pre-sand and sand and polish lacquered panels. The crossbelt on the infeed head facilitates complete leveling of a panel before finishing in the higher grit sequences. The electronic sectional pads are controlled by a microprocessor which automatically senses irregular thickness in the panel and applies varying pressure to ensure a smooth finish. Circle #274 The Butfering Vega Series of widebelt/crossbelt sanders from Force Machinery features standard CNC controls which can be utilized on any machine with two or more heads. In addition, the machine can be ordered with PC-based software compatible with Windows or with a special control for non-interfaced requirements. Circle #275 Cemco, in an agreement with Don Haney, manufactures an updated version of Haney's cross-grain orbital sander. The units are available in three widths (37, 43, and 52 in.) and can be equipped with both widebelt abrasive heads and angled brush denibbing heads. The ratio of usable abrasive media is over 60 percent and it uses a less expensive type of abrasive, according to according to prep. 1. As stated or indicated by; on the authority of: according to historians. 2. In keeping with: according to instructions. 3. the company. The Cemco orbitals offer a wide variety of options as standard equipment. Circle #276 The 252-11C widebelt sander from Timesavers is designed to finish veneers and, when equipped with a two-speed main motor, seal coat sands flat parts. It incorporates a vacuum hold-down system that secures parts as small as 4 in. x 6 in. during finishing. A belt-loading device is reported to reduce downtime and a special blow-off device saves shop owners money by extending abrasive life. Circle #277 Linden's Sandingmaster 4000 Series widebelt sander is a three-head sander with segmented pads. The first head is a segmented cross belt, the second is a combination head which can accommodate 2,620mm-long belts, and the third head features an electronically-controlled segmented pad. Additional features include a vacuum table, panel cleaning brush, and frequency controlled main motors. Circle #278 The Model RB37 37-in. widebelt sander from Powermatic is equipped with a 15hp/3-phase/230 volt motor and magnetic controls. The combination head features a "micro adjust" platen knob to permit precise adjustment of the platen. An "air-jet" sensor and special diaphragm diaphragm (dī`əfrăm'), term used to describe any of several large muscles, found in humans and other mammals, which separate two adjacent regions of the body. The most commonly known muscle of this class is the thoraco-abdominal diaphragm. valving system controls the sanding belt oscillation Oscillation Any effect that varies in a back-and-forth or reciprocating manner. Examples of oscillation include the variations of pressure in a sound wave and the fluctuations in a mathematical function whose value repeatedly alternates above and below some and virtually eliminates conventional tracking problems. Circle #279 The Heesemann MFA See multifactor authentication. 8 from Stiles Stiles can refer to: People
The SandSmart Control from Performax Products Inc. is reported to maximize the feed rate of all four of the company's SuperMax models of single and dual drum sanders. The control is reported to eliminate the guesswork involved in manually controlling the conveyor's speed to allow for the fastest feed rate possible. Producing consistent results on boards with varying density and grain pattern, the control increases planing and dimensioning efficiency. Circle #281 The Model TDKS TDKS Time-Dependent Kohn-Sham 1300 widebelt sander from Boere/Danckaert is equipped with a cross belt sanding unit with electronic segmented pressure platen, an independent panel brushing unit, an electronic segmented polishing platen, and an air-cushion laminated feed table to further absorb thickness variations. Circle #282 The DMC DMC Devil May Cry (video game) DMC Detroit Medical Center DMC Darryl McDaniels (rapper) DMC Destination Management Company DMC Del Mar College (Corpus Christi, TX) Topsand widebelt sander from Tekna Machinery is a CNC machine which is capable of automatically adjusting sanding head selection, feed mat speed, specific program selection, abrasive belt speed, platen pressure and more. Circle #283 The Casadei Beta widebelt sander from Biesse America features a calibrating depth limiter lim·it·er n. 1. One that limits: a limiter of choices. 2. Electronics A circuit that prevents the amplitude of a waveform from exceeding a specified value. Also called clipper. , electronic digital readout, joint-free feeding belt, and opto-electronic system for abrasive belt tracking. This range of calibrating and sanding machines have been developed for small- to medium-sized companies that require high-quality finish in different production cycles, Biesse says. Circle #284 The 37-in. wide abrasive belt machine from S.J.G. Machinery Inc. features a 5-in. diameter contact roller followed by a 3-in. wide polishing platen. Additional features include a 75-in.-long abrasive belt, table power raise and lower, a 15-hp main motor, and controlled variable feed. Circle #285 Precision Manufacturing offers a widebelt sander with features that include: a quick change sanding belt with no loose parts Loose Parts is a single panel comic strip drawn by Dave Blazek since 2001. It is similar in tone to Bizarro, drawn by Dan Piraro, involving theater of the absurd-style themes. , electronic photoeye tracking system with emergency shutdown if the belt misses the tracks, and an easy-to-read material thickness scale. Other features include a variable speed conveyor, main control panel that is accessible from the front or rear of the machine, 37-in. x 75-in. abrasive belt size and a combination head with adjustable platen. Circle #286 The Halsty widebelt sander features a 37-in. x 75-in. abrasive belt, 8 1/2in. working height, combination head with nine-position platen and four-speed conveyor belt conveyor belt One of various devices that provide mechanized movement of material, as in a factory. Conveyor belts are used in industrial applications and also on large farms, in warehousing and freight-handling, and in movement of raw materials. . Circle #287 Costa & Grissom offers the Model 80 line of sanders that reportedly eliminates hand sanding. The sander can also be equipped with a new computer system known as the Sanding Manager, an industrial grade PC which uses MS DOS and Windows 3.1. The screen displays the machines configuration and all machine functions are mouse activated. The PC also features automatic troubleshooting, electrical and electronic schematics and a bar code reader See bar code scanner. system for faster setup. Circle #288 The Model Pro-3000 37-in. widebelt sander from Woodmaster Tools Inc. features single- and three-phase motors with infrared tracking, motor load meter, metal disc brake and variable feed speed. Circle #289 The Series 500 knife planer/sander from Abrasive Engineering & Mfg. features a unique spiral cutterhead in the first station. The unit can be used for furniture, cabinetry cab·i·net·ry n. Cabinetwork: finely detailed cabinetry. Noun 1. cabinetry - the craft of making furniture (especially furniture of high quality) cabinetwork and millwork production requiring dimensioning and sanding of edge-glued lumber, banded particleboard par·ti·cle·board or particle board n. A structural material made of wood fragments, such as chips or shavings, that are mechanically pressed into sheet form and bonded together with resin. and corestock materials. Circle #290 Profile/edge sanders The Model 225 profile contour sander from Crouch Machinery features: a 2-hp Baldor DC drive motor, variable speed adjustment, 4-in. vertical wheel adjustment, fabricated fab·ri·cate tr.v. fab·ri·cat·ed, fab·ri·cat·ing, fab·ri·cates 1. To make; create. 2. To construct by combining or assembling diverse, typically standardized parts: steel base, maple table and 1 -in. spindle spindle: see spinning. A rotating shaft in a disk drive. In a fixed disk, the platters are attached to the spindle. In a removable disk, the spindle remains in the drive. Laptops use spindle designations to indicate the number of built-in drives. diameter. Circle #291 Edge belt sanders from Ritter rit·ter n. pl. ritter A knight. [German, from Middle High German riter, from Middle Dutch ridder, from r Mfg. are off ered in widths of 4 and 6 in. The double-sided, ground steel platen lengths are standard up to 60 in. Drive motors up to 5 hp with overload protection are standard. All models feature end tables with contact drum and spindle sanding units. Dust hoods at both ends of the platen provide for high volume dust removal. Circle #292 Delle Vedove USA offers profile and edge sanding machines that can sand a wide variety of pieces and can be equipped with various belts, abrasive wheels The Abrasive Wheels were a punk rock band. The band originated in Leeds, and consisted of Shonna on vocals, Dave on guitar, Harry on bass and Nev on the drums. They produced two albums, When The Punks Go Marching In and Black Leather Girl and special wheels for handling intricate shapes. Circle #293 Designed to eliminate hand sanding, Turbosand, available from the Voorwood Co., has a die-cast profile shape that reportedly is accurate when sanding to within 0.001 in. Spaced slots in the head create a turbine effect that blows the abrasive clean and prevents loading and burning. Grits are available from 80 to 200 and aluminum oxide aluminum oxide: see alumina. and custom profiles can be produced. Circle #293 The ES Series of edge sanding machines from Tagliabue America are available in single- or double-sided versions. Maximum workpiece thickness capabilities are 100mm for all machines, and depending on the model, feed motors can range from 2 to 4 hp. Circle #294 The DMP-1W profile sander from Derda Inc. can be used in various configurations and can sand straight mouldings, curved frames or shaped doors. The abrasive wheel holder assembly can be freely moved backwards and forwards as well as up and down. The machine is reported to be able to sand any type of wood, particleboard of veneered surface, whether varnished or not. Circle #295 The Model 320 Shape and Sand System from Unique Machine & Tool Co. shapes cabinet and furniture parts and then sands the parts with its feed through system. Variable speed controls and multiple stations allow for finish sanding to be completed to exact requirements. In addition, the machine is capable of sanding arches and shapes. Circle #296 The P.A.0. Macc automatic profile sander from Tech Mark Inc. is equipped with a material transport system which controls the alignment of the moulding, special 100mm wide drive belts to ensure uniform speeds, a solid bed plate under material for positive pressure for the sanding head and easy-to-adjust guides. Circle #297 The LTC LTC abbr. lieutenant colonel 4 profile contour sander from Makor USA Inc. features 40-200 fpm feed speeds, and can sand veneer, plywood, particleboard and other materials. It features four sanding heads. Circle #298 The LASM LASM Land Attack Standard Missile LASM Live Action Sailor Moon (Japanese TV Show) LASM League Against Salivating Monsters (Red Dwarf TV series) LS-INR profile sander from Atlantic Machinery Co. has one variable speed station with 45-degree tilt for sanding or shaping applications and one sanding belt station with 135-degree tilt. It also has automatic feed with variable speed and reverse feed features. The machine is available in several versions with up to four stations. Circle #299 The 300/Gyro profile sander from Fladder Systems allows for the following benefits: uniform stain penetration, smoother sealer of primer coat and minimum grain raising. The machine is available in 52 in. and 39 in. widths. Circle #300 The HN Series throughfeed profile sander from U.S. Concepts is designed for sanding and buffing various mouldings with combination sanding and buffing wheels, and has sanding belts with up to eight units. Sanding units can be equipped with a variable speed controller and automatic indexing for wheel position in relation to its wear. Circle #301 The GL-160 series of profile sanders from E&R Supply Co. Inc. is available with sanding blocks, belts, wheels and brushes and can sand a variety of materials including particleboard, veneered products and lumber. Circle #302 |
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