10 Sep. 1979|
Table planer machine,diy pergola on existing deck railing,easy reclaimed wood projects,plan construction bassinet - PDF Review
The PlanerAt one time the planer was considered an indispensable part of any machine shop; using very inexpensive tooling they were able to machine large components with relative ease. Britannia shapers, even the smaller models, were industrial-class machines and fitted with many features designed to enhance both their speed of working and versatility. Combination Woodworking Machines BM10308(Table saw,miller,thicknesser,planer,mortiser)NEW!!, View combination woodworking machines for sale, FORESTWEST Product Details from Qingdao Bright Machinery Co., Ltd. Similar to (1), including the knee-and-column table support but there is no provision for ram-like Y motion of the spindle carrier. In the universal version of this type of machines, addition of the capability for rotating the workpiece about the Z-axis, either through a rotary table or through a rotary vise mounted on the table, permits angular cutting.
This type of machines are generally built with high-power motors and heavier-duty construction.
This type of machines is characterized by the absence of the knees (in other words, fixed-bed) and, among vertical-spindle machines, are the most rigid class of construction and are usually built with the greatest power capacities. A specialized version of the fixed-bed design is the incorporation of a mechanism to raise and lower the spindle carrier through the Z-axis automatically in conjunction with the table travel.
This type of machine is sometimes called plain miller, which denotes that the table, typically long and narrow, is at a right angle to the spindle axis. In the bed-type horizontal machines, the spindle rigidity gained by generous support of a horizontal-axis cutter is combined with the table rigidity inherent in fixed-beds. This type of milling machines is most likely to be built in singlex, duplex, or triplex versions; the designations refer to the number of spindles employed.
Continuing in a progression toward greater power and cutting capacity but with more specialization and less versatility is the planer-type mill, which shares its basic construction principle with that of the planer. Openside planer mills are designed for ease of workpiece loading and unloading and have a single upright column that supports the cross rail.
An alternate approach to machining a long, heavy workpiece is to mount it firmly in place on a non-moving table and to traverse the milling cutter past it.
13 Horizontal Miller was a large machine with a 45-inch long table; the longitudinal travel was 21 inches, the cross feed 8 inches and the vertical movement 16 inches.
In the modern period of time these machines use advanced techniques and CNC control system. Resting on rectangular beds that are single castings or are made up of weldments, the bed-type machines are able to withstand heavier loads on their work tables without deflections becoming a problem, and they can stand deeper cuts without causing tool chatter. Universal versions of horizontal-spindle machines incorporate a provision for rotating the table at angles up to about 30 o away from perpendicular to the spindle axis; a dividing head is often added as standard equipment for this style. Dedicated, manufacturing-oriented machines are sometimes built with spindles located 90o or 180o to carve multiple faces of a single workpiece in single feed stroke.
This is in contrast to more-conventional double-column (or “bridge-type”) planer miller that can provide a high degree of structural rigidity.
The travelling-column machine does this by traversing the entire column along ways that run parallel to the length of the worktable. The table power feed was arranged in a manner not dissimilar to that still employed today, with a pulley arrangement on the back of the miller's main body driving a universally joined and splined shaft connected to a gear that could be hinged up and down to engage with a worm fastened to the table feed screw. This pulley drove the outer of the two pinion gears that caused the table to be driven, at cutting speed, under the tool box.
Built to special order only, this was one of the company's largest planers, the tool able to travel 8 feet horizontally and 39 inches laterally. This was a heavily-built machine, able to plane a piece of metal 4 feet long, 2 feet wide and 2 feet high. Horizontal boring machine is capable for heavy duty so that there also available some high precision models.
In the turret-ram styles, the entire ram overarm can pivot about the main upright axis of the column's backbone, thus positioning the spindle in an arc sweeping over the workpiece table to describe an arc.
The table is mounted on the saddle, which provides the Y-axis motion, and the saddle, in turn, straddles the knee that elevates the work (Z'). Many feature multiple milling heads (rail heads mount vertically on the cross rails that straddle the table; side heads have horizontal spindles that simultaneously machine, say, the sides of box castings). As the table came to the end of its travel a trip bar caused the belt shifter to fling the belt across to the left-hand pulley, and so engage the drive to the inner of the two pinions.
A self-acting circular motion was available as an extra.The driving pulley was a 3-step cone type (for flat-belt drive) and was fitted as standard with a handle so that the machine could also be used under hand feed - a useful feature for jobs requiring a particular sensitivity of touch. 7 planer was very similar, but had a planing capacity of 6 feet, by 2 feet 6 inches by 2 feet 6 inches. Mostly one vertical spindle boring machines are used in tool making shops and there is a work holding table which can be moved into two horizontal directions which are perpendicular to each other for giving accurate space in holes. For hand feeds a large-diameter wheel, with capstan-like handles, with was fitted to the input shaft - let us hope that this could be disengaged whilst the planer was being used under power. The cutter head was power fed across the job by the use of a simple ratchet feed, operated by a long rod that reached down and engaged with the table-drive mechanism.. This machine also can produce long holes and capable to make interchangeable parts without using fixtures and jigs.