an angle plate is a work holding device used as a fixture in metalworking. the angle plate is made from high quality material generally spheroidal cast iron that has been stabilized to prevent further movement or distortion. slotted holes or 't' bolt slots are machined into the surfaces to enable the secure attachment or clamping of workpieces to the plate, and also of the plate to the worktable.
a vertical bandsaw, also called a contour saw, keeps the blade's path stationary while the workpiece is moved across it. this type of saw can be used to cut out complex shapes and angles. the part may be fed into the blade manually or with a power assist mechanism.
thus vertical mills are most favored for diesinking work machining a mould into a block of metal . heavier and longer workpieces lend themselves to placement on the table of a horizontal mill. prior to numerical control, horizontal milling machines evolved first, because they evolved by putting milling tables under lathe-like headstocks. vertical mills appeared in subsequent decades, and accessories in the form of add-on heads to change horizontal mills to vertical mills and later vice .
initially, shoulder rumble strip installation focused on freeways using rolled-in rumble strips of different designs using a modified roller on a pavement rolling machines. later, paving contractors modified pavement rolling machines to mill rumble strips into existing hardened asphalt pavement. specifically designed commercially available .
helicopter rotor and bamboo-copter: the use of a helicopter rotor for vertical flight has existed since 400 bc in the form of the bamboo-copter, an ancient chinese toy. the bamboo-copter is spun by rolling a stick attached to a rotor. the spinning creates lift, and the toy flies when released.
rail transport or train transport is a means of transferring passengers and goods on wheeled vehicles running on rails, which are located on tracks.in contrast to road transport, where vehicles run on a prepared flat surface, rail vehicles rolling stock are directionally guided by the tracks on which they run.tracks usually consist of steel rails, installed on ties sleepers set in ballast .
in machining, boring is the process of enlarging a hole that has already been drilled by means of a single-point cutting tool, such as in boring a gun barrel or an engine cylinder. boring is used to achieve greater accuracy of the diameter of a hole, and can be used to cut a tapered hole. boring can be viewed as the internal-diameter counterpart to turning, which cuts external diameters. there are various types of boring. the boring bar may be supported on both ends, or it may be supported at on
its primary function is in the realm of grinding holes for drill bushings and grinding pins. it can also be used for complex surface grinding to finish work started on a mill. it can also be used for complex surface grinding to finish work started on a mill.