Yamaha Linear Motor Single Axis Robot Feature Memo

good day (daytime greeting)Feature Memo for Yamaha Linear Motor Single Axis Robots."　Here is a note about the

I often deal with pulse motors and servo motor electric cylinders, but I am not familiar with linear actuator single-axis robots.　Today, I would like to note and excerpt some items that caught my attention when looking into this linear actuator single-axis robot.

Borrowed from catalog

Linear Actuator Single Axis Robot

Below are notes on the features.

Background of Linear Actuator Development

Citation:https://www.yamaha-motor.co.jp/robot/lineup/phaser/

Capable of high-speed transport over long distances.Single-axis robots with linear motors boasting high precision and high thrust.

With the increasing size of manufacturing equipment and the increasing speed of conveying equipment in factories,Linear motor actuator developed to meet the requirements of long stroke, high speed, and high precision　It is By attaching various tip tools, it can be used for a wider range of applications such as assembly, insertion, removal, transfer, adhesive application, and soldering of electrical/electronic components and machine parts, including screw tightening.

Lineup range

The range of specifications is as follows

• Maximum stroke: 4050mm
• Maximum speed: 2500 mm/s
• Repeat positioning accuracy: ±5μm
• Resolution: 1μm
• Maximum payload: 7 to 160 kg

(1) This is what I thought was great.

①-1No dangerous speed limit

No hazardous speed limitation like ball screws　especially because ofCycle time can be reduced for long-distance conveyance.

Borrowed from catalog

Quote: What is the critical speed of a ball screw (https://www.kuroda-precision.co.jp/technical-information/bs/bs025.html）

A round bar shape screw shaft like a ball screw always has deflection due to bending and deflection due to its own weight.　When a screw shaft with such a round bar shape is supported at both ends by bearings and rotated, and the rotational speed is increased, the deflection increases and the shaft may eventually be damaged.

Critical speeds" are rotational speeds at which the rotational shaft is in danger of being damaged.It is called.

(1)-2 Standard support for double-carrier specifications is amazing.

Double-carrier specifications, in which two carriers operate on a single robot, are supported as standard.　Space saving, cost reduction, and tact time improvement are possible.　On a single robot Can also support "multi-carrier" operation of three or more carriers

Image borrowed from catalog

(1)-3 Low cost (apparently) Check with dealers.

Low cost due to in-house production of major components,The cost is low enough that it can be selected in the same line as a ball screw type actuator.*In fact, the reason I'm looking into this issue.With today's linear actuators, wouldn't it be possible to achieve long-term operation at a low cost and with minimal wear? From the suggestion that　It was.

(1)-4 Superior environment for use

It is magnetic,Operable even in environments with some grease or cutting fluid

In addition, a stainless steel shutter with good dustproof construction and high fatigue strength is used. It prevents the entry of foreign substances from the outside.

(1)-5 Flat type with no cable bearers popping out is standard, which is great for designers.

For that reason,Installation of large jigs and design of upper fixtures can be done with relative ease.

Dual drive (using gantry in IAI) is possible to drive two axes synchronously.

Since synchronization is possible, they can propose the best control method for the robot, such as torque support control, dual-axis positioning control, etc., according to the rigidity of the robot coupling.

(1)-8 Cable bearers are optional.

• S: φ8 flex cable*1, φ4 air tube*1 (approximate contents)
• M: φ8 flex cable*2, φ6 air tube*2 (approximate contents)
• L: φ8 flex cable*2, φ6 air tube*3 (approximate contents)

Three types are available for selection.

(1)-7 Quietness and long life

Unlike ball screw type,The actuator is quiet because there are few sliding or rotating parts, and it is non-contact and will not wear out over a long period of time.
The "A" in the "A" column is the same as the "A" column in the "B" column.

Things to be aware of when using the product

(2) -1: Not a full ABSODEX Semiaxo has a semiaxo

After power-on and before operation, the current position is obtained by reading the signals recorded on the linear scale,It does not need to be greatly homed, but it does seem to need to operate somewhat.(Max. about 76 mm, depending on the model)

2-2 Restrictions apply for wall-hung use depending on the model.

Some types are wall-mountable, others are not.

②-3 Vertical use by itself is not acceptable.

Vertical version (with brake) is not in the lineup.　Check with the manufacturer to determine if vertical use is possible with a separate fall protection device.

Finally.

We will add any additional information that should be added.

That's it.