Innovation must come at a price

The process brought a strangely shaped R385 motor and asked me if I could press the gear into the shaft.

Our automatons and manual fixtures are geared under and motors pressed on top. The gear is placed on the gear base and the elastic shaft is worn like a hole in the center of the gear to set the position. The motor is placed on a semi-circular mold to position and guide. The shaft steel of the motor is well placed on the gear. Then use a pneumatic beer machine to drive the indenter, press the shaft of the small end of the group, and press the large end shaft of the motor into the gear. This total technology is very mature. When pressing, we control the force of the pressing section through the pressure sensor. Rules, normal motors, can use this method.

However, this R385 motor is weird, the group is small and very long, and the shaft is deeply sunken into a small special-shaped counterbore. If you design according to the convention, either the indenter is slender or the special-shaped indenter is designed to be smaller than the countersink. However, if the indenter is slender, it is easy to break without force; if the special-shaped indenter, although strengthened, but the motor positioning must have a direction, otherwise the indenter is very south when pressing down to the counterhole. The motor cannot be positioned in the circumferential direction of the die, so conventional methods cannot design the gear press-into fixture.

I called my colleague in charge of the gear to discuss it. It is recommended to put the motor down and the gear wheel on it to pay for the test. The motor is underneath, fixed with a positioning seat, and at the same time supports the shaft at the small end of the group. The gear is on top and placed on the indenter. In the middle of the indenter is a spring-loaded extension pin that holds the center hole of the gear. A hole is dug on both sides of the extension needle and a strong magnet is placed so that when the gear is manually loaded, the gear hangs on the indenter and does not fall off. Such a fixture can be installed on a large beer machine to install gears.

This is a first of its kind and has no reference. It seems feasible, but there are risks, there may be unthinking problems, and it must be tried. Innovation must come at a price. I asked the process, if the trial production, if there is a flaw, can not be picky, as long as feasible, must receive the goods. Otherwise, tell the customer that it can't be done and find a way to do it yourself.

The colleague in charge of the gear agreed with my idea. My process colleagues agreed with me.

I am a device development engineer, Chang An. Isn't it a professional, does anyone understand what I'm saying? If you have it, you're amazing, you can understand it without pictures! Cartography is an engineering language, and cartography is generally indispensable.