What is the pendulum stroke of an electric jigsaw?
What is a pendulum stroke jigsaw and what is it for??
Electric jigsaw. an electric tool for sawing different densities of materials. Built on the principle of a saw with reciprocating movement of the working surface. Can have different power, additional functions and soleplate type. For professional purposes, it is recommended to choose models with a pendulum stroke. They are distinguished by faster movement of the blade, the ability to adjust the mode.
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Features and Design
The household electric jigsaw is a manual work tool, equipped with an electric drive. Such unit has small dimensions and relatively low weight, which allows holding it in one hand during the work process. The main functionality of the jigsaw is the ability to perform straight and curved cuts of almost any construction material (depending on the selected saw blade). It can also be used to form rectangular or circular technological holes of a given diameter. Such an electric tool performs a wide range of works on longitudinal, transverse and shape cutting of sheet material, so its popularity among craftsmen is extremely high. To know how to choose an electric jigsaw and not to make a mistake with the purchase, it is desirable to have an idea of its equipment, studying the description of parts and features.
Basic design elements
The processing of wooden, ceramic, plastic and metal surfaces is carried out by the saw, driven by an electric motor, and the frequency of its reciprocating movements can reach 3500 stroke/min. This parameter directly affects the performance of the unit, so before choosing an electric jigsaw, be sure to pay attention to this value. To ensure safe operation, manufacturers usually protect the jigsaw blade with a special shield made of transparent plexiglass.
Another indispensable element of the design is the base plate, or as it is called in professional parlance, the support platform, which acts as a guide. Its task is to ensure an accurate cut by maintaining the same distance between the workpiece and the machine. Experienced craftsmen recommend buying a jigsaw model with a pivoting soleplate, which makes it possible to make a cut at an angle. As a rule, the jigsaw’s support platform is made of steel, aluminum or a high-strength plastic base.
The configuration of the handle of the jigsaw can be mushroom-shaped or made in the form of a staple. In the first case, manufacturers offer an excellent option for working on an inclined plane. In turn, the staple-shaped element of the design opens the view of the cutting line, which is very convenient in the work. The shape of the handle is chosen according to individual preferences, it does not affect the quality of the cut.
The design of the electric jigsaw indicates the specifics of its operation, so if you plan to use a home machine in places without electrical outlets, you have to buy a model with a battery.
Please note that cordless samples are characterized by a short period of continuous operation, and their power is low.
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How the pendulum works
Convenient and definitely useful, it has a very simple and reliable device. The pendulum stroke of the jigsaw works on the principle of swinging, for which it is quite often referred to as “pumping”. The blade tip’s pendulum-like oscillating motion emanates from a supporting roller. The source of such movements is a massive balancer with a thin metal plate to the bottom. As the reducer rotates, the balancing element, together with the rod, make reciprocating actions, and if the latter transmits them to the saw, the former produces pressure on the paging mechanism. To see in more detail how the pendulum stroke of the jigsaw works and to understand what it is, you will be helped by the following photo and video.
In the material above, the pendulum function is not active. You can clearly see the balancer stroke with a metal plate that can rest on the cylindrical element when it is tilted. Thus, when the inclination of the part is increased, by switching modes on the tool body, it will be in the way of the metal plate that pushes this part and the support roller connected to it. The return to initial position is by means of a normal spring.
The simple jigsaw moves the saw strictly up and down. Jigsaws with a pendulum (or orbital) action cut faster by moving the blade forward in the upstroke and backward in the idle downstroke, which clears the cut. The vertical movement is achieved by using the pivot, eccentrically mounted on a pinion, which leads to rotation of the electric motor. At the same time, a separate vertically moving pin swings the saw blade support roller, which in turn swings the blade.
Most jigsaws have a cooling fan that blows air through the air duct to remove sawdust from the sawing line. Some models have a function for sawdust extraction: sawdust is extracted from the working area with a flexible hose attached to the back of the jigsaw with a household vacuum cleaner.
A single-speed jigsaw slices at a constant speed, but most jigsaws have infinitely variable speed control to optimize performance on different materials. The jigsaws have a safety switch to adjust the number of sawblade cycles as a control switch.
Maximum efficiency of the jigsaw
Saw blades should be replaced as soon as they become dull, not to mention broken. Blunt saws both cut badly and put extra stress on the motor and gearbox.
There are special saws for cutting different materials; wood saws come in different tooth configurations: for thinner, faster or cleaner cuts. When doing the job, be sure to have a saw that is appropriate for the job.
Check the jigsaw manufacturer’s recommendations for optimum jigsaw speed and swing action for the material you are sawing.
From time to time lubricate the saw blade bearing roller with a drop of light machine oil.
CLEANING THE JIGSAW
Use a brush to blow dust out of the vents and sawdust outlet and wipe the entire jigsaw body. If you will not use the jigsaw for some time, lightly lubricate the exposed metal parts to prevent corrosion. Be sure to wipe these parts down before using the jigsaw.
THE JIGSAW IS MOVING SIDEWAYS
Blunt or bent saw blade
Don’t hesitate to replace a dull or damaged saw blade.
The saw’s support roller requires adjustment
On some models the saw blade support roller can be adjusted by sliding it forward and backward so that it only touches the back edge of the blade. Sometimes the roller is attached to the jigsaw’s base plate and it is necessary to loosen the fasteners and move it forwards or backwards in order to do this. Don’t forget to re-tighten all fasteners afterwards.
Improper sawing technique
Pressing the jigsaw in the sawing direction can take it out of alignment. Pull the tool back and gradually bring it to the desired saw trimmer line by reducing the pushing force.
A short guide rail can be lengthened by attaching a long hardwood rail to it.
THE JIGSAW BLADE SUPPORT ROLLER IS JAMMED
If you forget to lubricate the roller, it can jam. If lubrication does not solve the problem, try replacing the roller. On some jigsaws this can mean the entire base plate has to be replaced. Other models have to be disassembled in order to remove the damaged roller.
- Remove the jigsaw and place the jigsaw on a table or workbench so that the two halves of the body can be separated. Mark the exact position of the parts and wires, being careful not to touch them unnecessarily.
SPLITTING WOOD
When the blade cuts the wood in an upward motion, it tends to chip off pieces of wood on either side of the kerf on the top surface of the workpiece.
Turn the workpiece over so that the front side is on the bottom, or place the workpiece between two sheets of high-density fiberboard.
What is a Pendulum Stroke on a Jigsaw ~ Everyday Questions
This material tells about how to elect electrol jigsaw on the basis of the main features and functionality. When choosing a jigsaw, you should first pay attention to the popularity of the manufacturer, the number of service centers and warranty conditions. Also it is not superfluous to find out reviews of this or that model, there are many forums in the web where you can do it.
Jigsaw pendulum stroke
Structurally, jigsaws are common with a D-shaped handle, and the form of the so-called boot. There is no principal difference in them, there is a worldview that working on the weight is more comfortable with a jigsaw in the shape of a boot.
The main features that are worth directing your attention when choosing a jigsaw, are: Power, stroke frequency, stroke and depth of cut.
Power Consumption. In modern jigsaws. The power capacity varies from 300 to 850W. The power has a direct influence on the performance, durability and life of the jigsaw. For home use, 500-700W is fully enough power.
Frequency of stroke. This characteristic has an influence on the cutting quality. Stroke frequency can be up to 3100 strokes./min. Combined with the frequency adjustable function it gives good results when sawing different materials, as different materials need different speeds.
Stroke. Based on the design of jigsaws and the principle of its operation, we know that the saw blade is attached to the rod that moves vertically (up/down). Distance from highest point of lift to lowest point, that is stroke. Stroke can be up to 26mm, the longer the stroke, the longer the contact between the saw and the material per stroke, and the higher the output.
Depth of kerf. The maximum cutting depths of wood can be up to 135mm, steel up to 10mm, non-ferrous metals up to 25mm.
The basic functions in an electric jigsaw are, pendulum stroke, stroke frequency adjustment. Secondary functions, illumination of the cutting point, laser pointer, blowing of the cutting point, quick clamping of the saw, socket for connection to a vacuum cleaner. The jigsaws also have the function of setting the support platform at an angle, we will not focus on this function, as it is present in all models of jigsaws.
Knowledge of certain jigsaw functions is useful when working with the jigsaw later on.
Pendulum stroke. This function is available on almost all types of jigsaws with the exception of low-power models. The jigsaw moves up and down as it runs, this feature causes the saw blade to move forwards in a reciprocating motion. So if you have to make a quick cut, for example to cut a sheet of plywood without having to worry about clean cuts, this feature is really indispensable. This function is only used when cutting soft materials (wood, chipboard, particle board, etc.).д.). Do not cut steel or non-ferrous metals with the pendulum stroke engaged.
Adjusting the stroke frequency. This function allows you to optimally set a certain stroke frequency depending on the material you are cutting.
Backlighting of the cutting point. LED light, illuminates the place of the cut, making it easier for the operator to see. Will be useful when working in poorly lit areas.
Laser pointer. The laser pointer embedded in the body of the jigsaw gives a clear line of sight to the trimmer in front of the jigsaw, in the line of the cut. Left/right laser adjustment available.
Blowing air to the kerf. When the motor is running, powerful air flows are produced that are pumped to the place of cut through special openings in the jigsaw’s body, thereby blowing away chips and making it easier for the operator to see.
Quick saw clamping. Makes it possible to change saw blades without using a wrench. Rather more of a professional function, as a quick saw blade change is not necessary in the home.
Duct for connecting to a vacuum cleaner. Allows the jigsaw to be connected to a vacuum cleaner, thereby keeping the workplace clean. Especially useful in enclosed areas.
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which one to choose for the house, the description of the tool
Electric jigsaw is a versatile tool, with the help of which perform processing of various materials in production or at home. Every craftsman who has to deal with cutting wood, plastic or metal, at least once in his life has wondered how to choose the right electric jigsaw. Indeed, the range of jigsaws is so wide, and represented by such a huge number of brands and models, that even an experienced person is not always easy to orientate in it.
As with any other special tool, it is important to study the jigsaw specifications carefully, get acquainted with its functionality, and read customer reviews of the selected model. Let’s say right away that each additional option of the jigsaw increases the cost of the product, so it is necessary to clearly determine the nature of the work that will be performed by the purchased sample. Sometimes the high price of electric equipment is formed not by the quality of the saw, but only indicates the presence of additional features of the jigsaw, and whether they are needed, it is up to you to decide.
Features and construction features
The household electric jigsaw is a hand operated tool with an electric motor. This unit is small and relatively lightweight, allowing it to be held in one hand during the work process. The main functionality of the electric jigsaw is the ability to perform straight and curved cuts of almost any building material (depending on the selected saw blade). It can also be used to form rectangular or circular technological holes of a given diameter. This power tool performs a wide range of works in longitudinal, cross and shape cutting of sheet material, so its popularity among craftsmen is extremely high. To know how to choose an electric jigsaw and not to make a mistake with the purchase, it is desirable to have an idea of its equipment, studying the description of parts and features.
Basic design elements
Processing of wooden, ceramic, plastic and metal surfaces is carried out by the saw, driven by an electric motor, and the frequency of its reciprocating movements can reach 3500 stroke/min. This parameter directly affects the performance of the unit, so before choosing an electric jigsaw, be sure to pay attention to this value. To ensure safe operation, manufacturers usually protect the jigsaw with a special screen of transparent plexiglass.
Another mandatory element of the design is the soleplate or, as it is called in the professional language, the supporting platform, which acts as a guide. Its task is to ensure an accurate cut by maintaining the same distance between the workpiece and the machine. Experienced craftsmen recommend buying a jigsaw model with a pivoting soleplate, which makes it possible to cut at an angle. As a rule, the jigsaw base plate is made of steel, aluminum or high-strength plastic substrates.
The shape of the jigsaw handle can be a mushroom-shaped or a clamp-shaped handle. In the first case, manufacturers offer an excellent option for performing work on an inclined plane. In turn, the bracket-shaped element of the design opens up the cutting line, which is very convenient in the work. The shape of the handle is chosen depending on individual preferences, it does not affect the quality of the cut.
The device of the electric jigsaw indicates the specifics of its functioning, so if you plan to use a home machine in places with no electrical outlets, you have to buy a model with a battery.
Please note that the cordless models have a short period of continuous operation, and their power is low.
Functional content
If with the basic elements of jigsaws everything is more or less simple and their set is usually standard, with additional options for professional material processing it is necessary to deal more thoroughly. So, modern manual equipment can demonstrate the following features:
- stroke frequency regulation. The choice of the required parameter can be carried out both before and during the work, increasing the pressure on the start button, thereby increasing productivity. Do not forget that during such manipulations the saw wears out much faster;
- connection of the multistage pendulum mechanism. Most modern jigsaws include a feature that allows you to increase the number of horizontal movements of the cutter in the sawing direction and in the opposite direction. In this case the saw does not wear out faster, but the cutting edge will be less accurate. For a good finish cut, it is better to switch this option off, especially when it comes to sheet steel and hardwood;
- illuminated working area. The lamp integrated in the body optimizes the cutting process and makes it more comfortable in places with insufficient lighting;
- Keyless saw blade change. Quick saw blade change with a special lever saves time on retooling the machine and allows fast installation of the selected cutter;
- automatic sawdust removal. The fan, designed to cool the electric drive, extends its functionality, and allows time to remove sawdust from the cutting line, which is especially important at the time of execution of works on wood;
- availability of an adapter for connecting a vacuum cleaner. This feature ensures thorough cleaning of machining surface from swarf and dust, thus improving the visibility of the cutting line;
- saw blade rotation. A very convenient function, thanks to which the cutting element of the jigsaw rotates 360 degrees, which is indispensable when forming rounded holes;
- fixation of the sole inclination. The home electric jigsaw can be fixed in a chosen position at a given angle (from 0 to 45 degrees) with the help of the locking device.