Internal Structure, Clamping Principle And Specification Of Standard Power Chuck For Lathe

Lathe power chuck has 2 jaws and 3 jaws. The wedge block structure is adopted inside. The wedge block is pulled by the pull rod inside the lathe spindle to realize the clamping of the jaws.

Read more

FANUC Payload Checker.xls Free Download

FANUC Payload Checker.xls Free Download

This Excel spreadsheet is provided by FANUC as an aid to determining the Wrist Load conditions of particular robots.

Every effort has been made to ensure that the spreadsheet data and formulas are correct, but FANUC does not guarantee that it is free of errors.

There may be some error margin between the load calculation result of this Excel file and the load calculation result of the robot controller.

The value of the gravitational acceleration used to calculate from V7.20 of the Excel file is changed from 9.81 to 9.8. Therefore, there is some error margin between the load calculation result of the Excel file on the previous version, 

the load calculation result of the robot controller, and the load calculation result from V7.20 of the Excel file.

Read more
Fastener Design Manual PDF Download for Free,Helical Spring Washer is Useless for Locking

This manual was written for design engineers to enable them to choose appropriate fasteners for their designs. Subject matter includes fastener material selection, platings, lubricants, corrosion, locking methods, washers, inserts, thread types and classes, fatigue loading, and fastener torque. A section on design criteria covers the derivation of torque formulas, loads on a fastener group, combining simultaneous shear and tension loads, pullout load for tapped holes, grip length, head styles, and fastener strengths. The second half of this manual presents general guidelines and selection criteria for rivets and lockbolts.

Read more
Why was the helical spring washer abandoned? I was shocked after reading the results of the finite element analysis

Helical spring washers can be seen everywhere,but foreign production of machine tools, robots, manipulators, chemical pumps and other high-end equipment can hardly see helical spring washers, is it foreign engineers in order to cut save costs?

Read more
What is the difference between linear motion and hard box guideways, and how CNC to choose right guideways?

The guide rail on the machine tool is divided into two kinds: linear rail and hard rail, the accuracy of the linear rail is higher than that of the hard guideway, but the hard rail is more durable and durable.

1. Linear guideway

It is our common linear guide rail, the linear guide rail itself is divided into two parts: the slide rail and the slider, the slider has an internal circulation of balls or rollers, and the length of the slide rail can be customized. It is a modular component, a standardized series of individual products produced by specialized manufacturers, which can be installed on the machine tool and disassembled and replaced after wear. The linear rail is rolling friction, which is fast, has low resistance, and is also convenient for lubrication.

What is the difference between linear motion and hard box guideways, and how CNC to choose right guideways?

Read more
The internal structure and principle of the pilot-operated check valve, Air cut-off protection to prevent the cylinder from falling

The principle of the pilot operated check valve is similar to that of the pressure holding valve, the exhaust port also needs to be vented before it can be opened, and if the air is cut off, the exhaust port will automatically close to prevent the cylinder from falling.

The internal structure and principle of the pilot-operated check valve, Air cut-off protection to prevent the cylinder from falling

Read more
Why add balance cylinder to J2 axis of robot? 99% of mechanical engineers choose to ignore it.

Just studied Japanese and German robots in the workshop, and found that slightly larger robots, J2 will be equipped with a balance cylinder, Japanese FANUC robot uses spring type balancing, German KUKA uses hydraulic type (diaphragm accumulator) or counterweight block method, I personally think that hydraulic (diaphragm accumulator) way is the best, the output is basically constant, and it occupies little space.

Read more
Spinning machine robot loading and unloading automation unit design

1 Project overview

1.1 Customer requirements

Use industrial robot to complete the automatic loading and unloading of spinning machine.

1.2 Actual situation

The raw material is disc-shaped, the workpiece is a circumferentially symmetrical rotary body, diameter: φ215mm Height: 7.3mm Weight: about 2kg. 

Part name: Reducer shell

Using spinning machine, the disc material is spin-formed into the reducer shell.

Spinning machine robot loading and unloading automation unit design

1.3 Note

In order to ensure the feasibility of the solution and the continuous and stable production of the automation cell, your company should meet:

  1. System workflowThe spinning machine should have an I/O signal output function, which can be automatically controlled by transformation. The spinning machine top plate action can be controlled by an external signal, and the ejection speed and position can be adjusted. In order to ensure the stability of production, the equipment provided by customer should be able to operate stably, otherwise any problems caused by this will be solved by customer.
  2. The blank is manually brushed and placed on a conveyor line, which transports it to the end V-shaped positioning, and then the jacking cylinder lifts it up. claw is suitable for workpieces within a specific size (robot grasping position size), if the workpiece size difference is large, you can do a series of claws or replace finger blocks and fingers.

2 Solution

The automatic loading and unloading project of spinning machine is composed of one spinning machine (on-site modification), one FANUC M-710iC/45M robot (including claw and base), one loading conveyor line, one unloading conveyor line, safety gate, safety fence and electrical control system integration. In order to meet the requirements of robot feeding, the spinning machine equipment must be mechanically and electrically modified, and the main transformation tasks involve manipulators, electricity, gas, oil circuits, etc. The following describes the systems and major devices referenced in this solution.

Read more
Is the robot high technology? The technology may not be as high as the excavator

When you mention industrial robots, you will think of intelligent manufacturing, which always gives people a feeling of being high technology, but do robots really belong to high-end manufacturing?

I was shocked to see a map of the excavator's operating range, which was almost exactly the same as the 6-axis robot's range of action.

Read more
Robot could not walk in a straight line, in addition to positioning accuracy, there is also repeatability of the path

Robots are not omnipotent, the more projects you do, the more you feel the limitations of the robot, not as powerful as we think, robots are generally used in occasions where the accuracy is not high, such as handling, welding, painting, etc., and for cutting, assembly, etc. is not enough, the root cause of this problem is that the accuracy of the robot repeat path is too low, far less than the manipulator or linear module.

Before we engaged in a cutting project, the cutting tool was fixed at the end of the robot, and the robot was used to complete the cutting, but when the actual execution was performed, it was found that the trajectory of the robot cutting was crooked, not a very straight line at all, and the expected effect was too different.

Read more