In the hydraulic shaper mechanism, the cutting tool is moved forward or backward with the help of the piston kept inside the cylinder. The hydraulic fluids represent the medium for power transmission. The different types of machine tools are lathe machinedrilling machinemilling. Angle covered by the crank is more in cutting stroke. The length of stroke of the ram can be changed by changing position of a connecting rod on crank plate from the fixed point o.
With a simple sketch, explain the working of the crank and slotted link quick return motion mechanism used in shaper. Seminar on shaping machine pdf report free download. In the case of the rockwell that reset is a knob on the lower right hand side of the cut, jog, stop control valve. Vise jaws should be perpendicular to the line of motion of ram. Inside the hollow portion the machine drive mechanism is housed. Explore shaper machine with free download of seminar report and ppt in pdf and doc format. Draw an alternative mechanism or combination of mechanisms that will produce the same forwards and backwards motion. It is made by cast iron and move over ways on column. Crank length can be varied by a screw mechanism the stroke is changed. During return, there is no cutting action and this stroke is called the idle stroke. Hydraulic operating mechanisms for high voltage circuit breakers. The tool slide swivel base is held on the circular seat on the ram and is graduated to indicate the angle of. A hydraulic drive system is a quasihydrostatic drive or transmission system that uses pressurized hydraulic fluid to power hydraulic machinery. Hydraulic circuit of a grinding machine hydraulic circuits in shaper and milling machine skd hydraulic circuit for shaping machine grinding mill china.
The following mechanisms are used for quick return of the ram. All cutting force should be against the fixed jaw of the vise. A usual shaper machine operates by a principle of whit worth quick return mechanism where materials are processed at one end and other end remains idle. The work piece is held rigidly in a vice or clamped directly on the table. Variable speed motor drive in this multispeed arrangement.
Fabrication of dual side shaper machine using scotch yoke. Hydraulic shaper machine diagram, working, advantages. The ram moves at a comparatively slower speed during the forward cutting stroke. Here the efforts are made to develop a electro pneumatic circuit for a shaping operations using a shaper machine this makes the operations semi, the shaper machine tool holds and locates a work piece on a table and machines or cuts the. The gear arrangement is totally replaced by a double acting hydraulic cylinder. Draw a diagram of the shaping machine and explain how the quick return mechanism works.
By hydraulics, we mean the generation of forces and motion using hydraulic fluids. The scotch yoke mechanism also known as slotted link mechanism is a reciprocating motion mechanism, converting the linear motion of a slider into rotational motion, or vice versa. As the ram moves at a faster rate during return stroke, the time taken becomes less. A regulating valve admits oil under pressure to each end on the piston alternately.
Pdf hydraulic operating mechanisms for high voltage. The forward and return strokes constitute one operating cycle of the shaper. In a hydraulic shaper machine, a constant speed motor drives a hydraulic pump which delivers oil at a constant pressure to the line. In conventional shaper machine stroke length can be adjusted by shaper dogs. Machining takes place during the forward stroke of. Shapers are classified under the following headings. Shaper machine principle, types, application, advantage.
According to the type of mechanism used for giving reciprocating motion to the ram. Shaper consists of a hollow machine bed made of cast iron which rests on the ground. The most common type of horizontal shapers is the production push cut shaper. The cutting speed is adjusted with the help of the throttle valve. It has a base, column, saddle, clapper box, cross rail, reciprocating ram holding the tool adjustable for cutting stroke, tool head at front of the ram etc. Shaper automation using electropneumatic devices and, ijerd. Is your new mechanism an improvement on the crank and slider mechanism. A speed motor drives a hydraulic pump that delivers oil at a constant pressure to the line.
The reciprocating motion of the ram is obtained by a quick return motion mechanism. The cutting speed of the hydraulic shaper is infinitely variable by means of hydraulic controls, as is the cross feed. In the shaper machine a single point cutting tool is rigidly mounted on the tool holder, which is mounted on the ram. Shaper machine, shaper machine manufacturer, shaper machines. Progress evolution and future trends article pdf available in science china technological sciences 541.
Hydraulic shaper machine learn mechanical engineering. The reciprocating part is directly coupled to a sliding yoke with a slot that engages a pin on the rotating part. The object of this book is to teach you more about hydraulics and its. With a hydraulic you can reset the control pressure so the machine just stops and waits for the operator to clear the oops. A simple design of hydraulic shaper mechanism as shown in fig 5. Strokelength of a ram is the distance the ram moves forward or backward. Shaper machine seminar report, ppt, pdf for mechanical. During the return stroke, the mechanism is so designed to make the tool move at a faster rate to reduce the idle return time. Shapers, hydraulic vs mechanical practical machinist. Hydraulic shaper machine working, circuits, advantages. As the ram reciprocates, the tool cuts the material during its forward stroke. In this modern shaper machine whole construction is same, but method of actuation is changed. The piston is pushed by the oil and, being connected to the ram carrying the tool. Shaper machine drive mechanism how shaper machine works seminar on shaping machine pdf report free download flying on flapping wings by using quick return mechanism design and fabrication of sliding ram by using quick return mechanism inversions of single slider crack mechanismrotary, pendulum, quick return mechanism withworth quick return mechanism operated conveyor mechanical project auto indexing gear cutting attachment for pneumatic shaping machine types of shaping machine.
In modern era, whole mechanical shaper machine is replaced by hydraulic shaper machine due its ease operation and reliability. The crank and slotted link mechanism is discussed as under. In this type of machine, the reciprocating motion of the ram is provided by the hydraulic mechanism. Remove all dirt and burrs from the work piece and the vise. Also explore the seminar topics paper on shaper machine with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019 2020. In this type of shaper machine mechanism, t he power is transmitted to the bull gear through a pinion which receives its motion from an individual motor. View and download grizzly g1026 instruction manual online. In modern era, whole mechanical shaper machine is replaced by hydraulic shaper machine due its. In half reciprocating stroke the tool cuts the metal and in the second half, the tool returns to the original positions. The term hydrostatic refers to the transfer of energy from pressure differences, not from the kinetic energy of the flow a hydraulic drive system consists of three parts. But in a dual side shaper machine, materials are processed at both. Based on the position of the reciprocating ram used.
This tool makes a reciprocating motion on the workpiece. In its mechanism, all these parts provide great flexibility in. In these types of shaper machines, the reciprocating motion of the ram is provided by the hydraulic mechanism. Set the work piece in the vise with parallel blocks at the bottom. Hydraulic shaper mechanism in this type of shaper machine mechanism, the ram is moved forwards and backwards by a piston moving in cylindrical placed under the ram. The major components of a shaper are the ram, which has the tool post with cutting tool mounted on its face, and. A shaper is a machine used for shaping metal removal operation on the work piece. The hydraulic shaper uses the oil under high pressure. Shaper machine and 9 different types of shaper machines. Cutting stroke is slower than the idle return stroke.
It is attached by the rocker arm which provide it motion in crank driven machine and if the machine is. The ram reciprocates and thus cutting tool held in tool holder moves backward and forward on. There is reciprocating motion of the mechanism inside the shaping machine. The admission of oil to each end of the piston, alternately, is accomplished with the help of trip dogs and pilot valve.
This mechanism is called slotted lever quick return mechanism and it drives a horizontal ram which reciprocates in the guide ways provided on the top surface of the machine frame. As the disc rotates the top of the machine moves forwards and backwards, pushing. The position of stroke can be altered by changing the position of pin on the ram. Hydraulic drive greater speed flexibility, smoother operation, stroke length can be adjusted. This type of shaper consists of a frame or column supported on a base, a reciprocating ram and work table. Tasks of a hydraulic installation hydraulic systems are used in modern production plants and manufacturing installations.
Principle and working of shaper machine engineering. Hydraulic circuit for shaper mc fig shows the hydraulic circuit for operation of shaper. It holds the tool and provides the reciprocating motion to it. A double acting cylinder is used to reciprocate the ram a pivot actuated d. Shapers are classified in number of ways depending upon the general features of design or the purpose for which they are intended. This hydraulic shaper uses the oil under high pressure and end of the piston rod is connected to the ram. The total machining time decreases and the rate of production increases.
In a manufacturing shop, shapers and planners are the commonly used machine tools. Hydraulic drive quick return mechanism a constant speed motor drives a hydraulic pump which delivers oil at a constant pressure to the line. Here, the valves, pressure, and oil play an important role. Shaper shaper 1 shaper 2 use of quick return mechanism shaper quick return mechanism hydraulic shaper dial, 247 online construction. Or overhead line shaft through a speed control mechanism. It depends upon the distance between the centre of the bull gear and the centre of the sliding block. The frame houses the drive mechanism of the shaper. The hydraulic shaper has the same major parts as the mechanical one. In this article i have explained definition, types, main parts, mechanism, operation, specification, pdf a slotter machine is another machine tool similar to a shaper or a planer machine. The circuit diagrams are drawn using standard symbols and labeling. Its cut is analogous to that of a lathe, except that it is archetypally linear instead of helical a wood shaper is a similar woodworking tool, typically with a powered rotating cutting head and manually fed workpiece, usually known simply.
A dual side shaping machine for industrial applications. Base is made by cast iron which can take all compressive loads. A shaper is a type of machine tool that uses linear relative motion between the workpiece and a singlepoint cutting tool to machine a linear tool path its cut is analogous to that of a lathe, except that it is linear instead of helical a shaper is analogous to a planer, but smaller, and with the. Pdf quickreturn mechanism design and analysis projects. Shaper machine works on a single return crank mechanism that provides tool reciprocating motion. It consists of hydraulic power unit which delivers the oil at constant pressure. The machine is consists of a constant discharge oil pump, a cylinder, a valve chamber and a piston.
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