clock gear design

a toy Polaroid camera.

It is now not only a gear template generator, but can create objects for 3d printing, design clock escapements, tabbed boxing, circular and non circular gears and even Celtic Knots. Therefore, it made sense to put an Arduino Uno at the center and control everything with software. It is intended to be hung on a wall using a keyhole hanger. Antikythera Mechanism II

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would result in a large gear size of almost 20 meters (for a metric module DesignCAD or others?

a 15:1 followed by a 4:1 to get 60:1, but a gear train with non-integer ratios

We hope you enjoy the new and added functions of Gearotic. Small piece of Cherry wood (3/4" thick) for the pendulum bob (from scrap), Small piece of Cherry wood or similar (1" thick) for the coil holder (from scrap), 1/4-20 threaded rod for shafts and standoffs (36" long) (, 10-24 threaded rod for the pendulum (24" long), (3) 14/20 knurled nuts for the front face, (10) Ball bearings 1/2" OD x 1/4" ID x 0.187 (eBay), Delrin or similar plastic 1.5" dia x 1.5" long for the coil bobbin (from scrap), Spool of 30 gauge enameled magnet wire (1/4 lb) for the coil (, Walwart 15 VDC x 0.9 A regulated for coil driver and on-board 12 V regulator (, Plastic project box approx. The motor is driven by a set of pulses for clockwise and then counterclockwise rotation. All parts were designed with CorelDraw XIII. The driver is based on the ULN2803 Darlington. It is also uncommon to see gear ratios larger than 10 to 1 for regular spur gears. Every store and seller is rated for customer service, price and quality by real customers.

The short video below shows the action of the pendulum-driven cam on the driving cowl. Philippe

require gears, so why not build a clock?

Think how jealous you’re friends will be when you tell them you got your clock gear design on AliExpress. Both the pendulum swing and the train of pulses are "dumb" meaning there is no correspondence between the two. After the movement stops, a spring pushes the two parts together and the clutch teeth engage again.

When actually designing a pendulum construction, things depart from ideal conditions. I probably spent 300 hours designing and building this clock.

The black parts of the image are intended for the direct toner transfer method of PCB making. But you may have to act fast as this top clock gear design is set to become one of the most sought-after best-sellers in no time. How to Make an Old-school Neon Street Sign. The pinion is pushed away from its counterpart disengaging it from the idler 2 wheel. It seemed that this interaction eventually reached an equilibrium as observed visually.

In short, you don’t have to take our word for it – just listen to our millions of happy customers.

It all started with gears! I like this.

A simple 2-conductor cable brings the coil power to the clock from the control box.

The axial position of this wheel on all other gear components is controlled by various spacers machined from aluminum.

It also shows on which shaft each Wheel-pinion pair is located. The 15V is used directly as the source for the coil driver.

An older version -- unfortunately, the direct 720:1 gear ratio

The idea is to repel the magnet at the tip of the pendulum every time the magnet just passed the center position.

Not directly related to the escapement. Why bmp? produce the values shown below.

Still, the sketch is likely not to run since libraries are missing.

Whether you’re looking for high-end labels or cheap, economy bulk purchases, we guarantee that it’s here on AliExpress. to count 60 minutes for one hour. Fortunately, VCarve can reduce the number of nodes drastically by using circular arcs or Bezier curves. Note that the voids that Great news!!!You’re in the right place for clock gear design. profile for gear teeth. The second shaft is held axially to the back frame with collars. Of course, there were surprises and I made mistakes along the way.

Most clocks require gears, so why not build a clock? The pendulum was driven by a magnetic pulse that was applied twice a second at an interval controlled by a precision digital clock. The pendulum

Acrylic Gear Clock: The clock by DickB1 was the inspiration for my design of a similar mechanism, however, with the gears made from Acrylic.The driving force for the pendulum is an electromagnet similar to the one used by DickB1. Three knurled nuts hold it in place. For a 30 tooth, 60 second escape wheel a 60:1 ratio is needed Note the 1N4004 diode for suppressing the back-EMF from the coil.

Headrick's Horology site. To manually set the clock hands, a one-way clutch is inserted between the idler 2 wheel and its companion pinion. However, I decided to add a OLED display for the date and time. This was also an experiment in rapid I have designed probably hundreds of PCBs some with as many as 1,600 parts.

I wrote Machines articles on mechanical movements, ZakGear I also built a clock with wooden gears similar to DickB1's design. By now you already know that, whatever you are looking for, you’re sure to find it on AliExpress. A small OLED display shows the date and time from the RTC. The wheel is secured to the second shaft and also 'married' to a pinion (not shown). We are interrupting our assembly program briefly to explain a special feature of the gear train. Retro Analog Audio VU Meter From Scratch! The software GearGenerator3.exe from Matthias Wandel is a nifty tool to generate the gear shapes. The faces of the palettes are lubricated This makes the ratchet wheel to rotate 6 degrees corresponding to one second.

in Albertville, Alabama. acrylic plastic. The back bone of the clock consists of a wall plate and a back frame.

CorelDraw also added locations for hold down screws for holding the blank against the CNC spoil board. The escapement mechanism an important part of the clock. Share it with us! While not necessary to drive the clock, a small OLED display (Diymall 0/96" I2C 126 x 64 OLED Display) shows the date and time. You see five libraries at the top of the sketch.

See Mark Headrick's Pin I you like to share your comments or have questions, please add them to the Instructables or contact me at It also was engraved with the 12 hour numerals.


Gearotic has grown a great deal over the past few years. I did apply some color to the tips of the hands so their position can be made out more easily. A rough pass using a 1/8" end mill formed the tooth shapes with a few mils of offset. There has to be an even number of pinion-wheel sets to maintain the clockwise rotation.

If you have any questions or comments, please feel free to contact the author at

CorelDraw, on the other and can only produce 2D DXF files.

The counter weights ensure that the cowls always engage the ratchet wheel.

Why not use real CAD/CAM software such as AutoCAD.

60 : 1 is too large to handle with just two gear sets - so we use four sets.

3 years ago.


It looks similar to this Steampunk Style Award Statuette, I like both! Note that a small diameter shoulder on the collars only contacts the inner ring of the bearing.

Note the slightly elongated holes for the cowls. You can find store coupons, AliExpress coupons or you can collect coupons every day by playing games on the AliExpress app. shows a cutting plan for the LASER cuttter to follow. The swing angle is likely to change which changes the period. Delightful Machines Horology, National Institute of Standards and Technology (NIST). A 600 tooth gear is pretty large.

The secret is using a very sharp cutter, make shallow passes and blast the cutting location with a constant stream of compressed air.

Maybe someday... Other alternatives would be a longer pendulum

This the result when fully assembled. I still use the previous pendulum that has a heavy bob so the backlash of the gear is not noticeable. The motor has an internal reduction gear resulting in approximately 512 steps per revolution. first batch of gears was cut at Freedom Then we design the back plane that holds all shafts and the cowls for the escapement. Now, we add the pulses.

We literally have thousands of great products in all product categories. However, the minute shaft could move freely on the second shaft. The Clocks Site A great site by Carlo G. Croce, Delightful The back frame is the main carrier for the hand shafts, the gear shafts and the cowls. Wheel Escapement animation page. This may be described in another Instructables some time. I have been using a LASER cutter to cut 1/4 Plexiglas.

What seems obvious during the design may be puzzling if you revisit the code a year later. In that case, also download (save) the file. National Institute of Standards and Technology (NIST)

Messy but it worked. One can manually turn the minute hand clockwise which is allowed by the clutch. The drawing shows the entire gear train in a linear view, together with the tooth counts.

simple component, but with many subtleties. The output for the coil is on a mini phone jack where a standard audio cable runs to another jack at the base of the clock.

Note that the shaft distances are identical at 3 inches. right analysis by La Hire. Jumping ahead a bit, we will look at the escapement in action. The larger swing reduces the swing time slightly.

Gear Train design for the wooden clock. At the present time, except for clock and watch gears, the involute curve is almost exclusively used for gear tooth pro-files, Therefore, except for an occasional comment, the following discussion will cover some 'of the basic elements and modifications used in the design of involute tooth form gears.

Finally, the front face finishes the gear assembly.

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The numerals were engraved with VCarve Pro using a shallow cross hatch pattern for the inside of the numerals.

The finished drawing was then exported again as DXF file. 4 tooth size).

a great instructable.

Every purchase is star-rated and often has comments left by previous customers describing their transaction experience so you can buy with confidence every time. Move it to where you usually keep your sketches. The pictures show the clutch engaged and free wheeling (held open for illustration purposes).

Most clocks

the escape wheel.

The next pulse is then applied early or late which, again, produces a new swing angle. Again, the file name will contain a bunch of letters. Most parts were machined with a CNC router.

Again, DickB1 was the inspiration for the clutch design.

I saw several magnet-coil arrangements elsewhere. Note that the period is affected slightly by the swing angle. The vertical bar in the picture holds the minute shaft at a fixed axial location.

The minute hand can be turned by hand by means of a one-way clutch.

The routing of Acrylic is a tedious process.

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