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C-Base Transmission Assembly

2011. C-Base Transmission Assembly. Produced by Ed Latimer, Team 476 Ken York, Team 476 Ron Markum, Team 1750. Transmission Assembly Instructions.

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C-Base Transmission Assembly

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  1. 2011 C-Base Transmission Assembly Produced byEd Latimer, Team 476Ken York, Team 476Ron Markum, Team 1750

  2. Transmission Assembly Instructions This PowerPoint contains instructions for assembling the transmissions from the 2011 C-Base frame kit from AndyMark, Inc. It is meant to be supplemental to the User Guide that is included in the 2011 AndyMark kit. AndyMark 2011 C-Base Transmission Assembly

  3. AndyMark User Guide Pg. 10, Step 1 Press Bearing into Housing There are 2 bearings in the transmission kit. The unflanged bearing with the smaller (3/8”) hole goes in the CIMple Box Housing. It is preferable to insert the bearing with an arbor press, but it can be done using a block of wood and hammer. Tap the bearing in, making sure it is going in square and is bottomed out in the housing. Properly installed bearing.

  4. AndyMark User Guide Pg. 10, Step 2 Install the Output Shaft Insert the output shaft in the bearing.

  5. AndyMark User Guide Pg. 10, Step 3 Grease and Insert the Big Gear Put grease around the edge of the big gear and insert it over the output shaft as shown.

  6. AndyMark User Guide Pg. 11, Step 4 Press Bearing into Shaft Plate The bigger bearing (1/2” hole) goes in this plate. It is a flanged bearing and must be inserted into the plate from the side shown in the picture. Again, it is preferable to use an arbor press, but a block of wood and a hammer can be used. Tap gently and make sure the bearing is going in square. Continue until the flange of the bearing is flush with the plate. The bearing will stick out the other side.

  7. AndyMark User Guide Pg. 11, Steps 5&6 Mount Shaft Plate Slide the shaft plate over the CIMple housing as shown. The shaft is a snug fit. Install a 10-32 nylock nut into each of the 4 corners of the CIMple housing and put a 10-32 x 5/8” cap screw through the 4 holes in the shaft plate. Tighten the screws down evenly.

  8. AndyMark User Guide Pg. 12, Step 7 Install Gear on CIM Motor 1. Insert the piece of 2mm machine key into the keyway on the motor shaft. Then slide the gear down the shaft around the machine key. 2. Get the 5/16” retaining ring and start it on the end of the shaft. Then see the next slide for details on how to get it in place…….

  9. 3. It is a little tricky to get the retaining ring on. The ring has to fit over the ‘bump’ created by the machine key sticking out of the keyway slot in the motor shaft. It will only fit if the ‘gap’ between the retaining ring teeth goes over the machine key. If you get one of the retaining ring teeth (that sticks down) caught in the groove of the shaft’s keyway, it is tough to get the tooth out of the groove. If that happens you are better off pulling the retaining ring off and starting it on the shaft again. See the next slide once it is started properly…..

  10. 4. Once you get the retaining ring properly started over the machine key, get a socket and push the retaining ring and gear down all the way until the gear is almost touching the motor. It should look like this when you are done.

  11. AndyMark User Guide Pg. 12, Step 8 Mounting the Motor Put the motor in in the housing and twist it until its gear meshes with the big gear inside. Then rotate the motor until the screw holes line up. Put a screw through the shaft plate as shown and screw into the motor. A trick to keep the screw from falling off when you put it through the hole is to put a piece of paper over the head of the cap screw and push the wrench on, as shown on the left.

  12. There are two screws per motor, 180 degrees apart. Put in both and tighten them securely. Note that if you later want more power for your robot’s drivetrain, the AndyMark CIMple Box can accommodate a second CIM motor.

  13. AndyMark User Guide Pg. 12, Step 9 Output Shaft Note that in the AndyMark User Guide, at this point they just have you install the machine key, adding the output sprocket later when mounting the transmissions in the Frame instructions. For the RQBS, we suggest you put the sprocket on here since the Transmission Team has a shorter task than the Frame Team. But it is your choice. 2. Slide the output sprocket over the machine key as shown. 1. Slide the black spacer over the shaft against the bearing, then install the 1/8” machine key in the keyway of the output shaft as shown. 3. Put on the thin white nylon shaft spacer, then the ¼” washer, and then the ¼-20 x ½” screw. Tighten the screw.

  14. The transmission assembly is now finished and is ready to take back to the Frame Team for mounting on the frame and installing the chain.

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