JIS B 6402 PDF

Read 3 answers by scientists with 1 recommendation from their colleagues to the question asked by Daniel Martinez Krahmer on Dec 17, JIS B Mechanical power presses — Testing of the accuracy (FOREIGN STANDARD. Find the most up-to-date version of JIS B at Engineering

Author: Shakazil Kajilmaran
Country: Bahrain
Language: English (Spanish)
Genre: Personal Growth
Published (Last): 3 December 2013
Pages: 313
PDF File Size: 2.95 Mb
ePub File Size: 13.86 Mb
ISBN: 139-2-77456-628-4
Downloads: 81081
Price: Free* [*Free Regsitration Required]
Uploader: Nelkree

Frame is stretched by three times This three time figure shows the maximum applied load of the press. Using the allowable capacity is disputable from the point of fair business transaction. Brake is automatically applied when the clutch is released. Evaluation of the screw press capacity is made with testing a work piece in cold compression.

Kaushico Machine Tools Pvt. Ltd.

In this status, compress the testing work piece and detect jiz frame deformation through strain gauge to show kN value on a load gauge. Hydraulic Overload safety device. The allowable performance for the former is 1. It would be accurately machined and ground finished and so designed to ensure optimum factor of safety.

Dual Sensing Solenoid valve. Therefore, the press needs to have emergency stop mechanism if the overload happened. Pneumatic balancer for slide 2 nos. Home Products Profile Brochure Contact. Especially, in those large edge burrs and cold working, it could jjis out of the allowable load even if the forming energy value is still a half of it.

You can adjust the slide speed freely adjustable forming energy freelyhowever, you can’t control how many kN to strike. The machine is made operational by pushing the reset button.


Air Filter, Regulator and Lubrication unit.

Since the screw press has no mechanical lower-dead-point, the machine never stops caused from overload stick like the crank press machine. The main frame plates are in one piece re-enforced by ribbing wherever necessary to provide rigidity to the frame and assuring least defection on full load. The slide speed adjustment takes the method that controls to have same speed every cycle based on encoder signal detected the slide descending speed. Surely, it is possible, however, can you imagine and would like to have the screw press that has the frame of kN press with flywheel of kN press and is used as nominal capacity of kN press?

Machine life is drastically shortened if the press is used under three more times of nominal capacity maximum capacity repeatedly usually, the screw and the frame get damage. Emergency stopwatch would be provided in the control panel.


Forming energy is completely same with flywheel energy. Acceleration and speed reduction are combined automatically to apply power with the Minimum time for one cycle.

You may recognize from the above discussion that the load gauge display quite differs when smash up a test piece or strike die against die even if the forming energy jjis the same.

Ejector bar in slide. Die Cushion capacity at 7.

JIS-B | Mechanical power presses — Testing of the accuracy | Document Center, Inc.

The screw press of kN; Set the load gauge that shows figures of when the testing work piece is compressed with the equivalent of kN. Set up the press slide speed and the slide stroke as maximum adjust g maximum power.


Even though frame is the same, larger amount of flywheel energy is put on to be a large performance press for hot forging and smaller amount of flywheel energy is put on to be a small performance press for cold nis. The flywheel revolution is sequentially controlled in a servomotor direct driven system without clutch transmission. If the preset value is small, the slide is clutched off right after acceleration and it descends evenly with inertia.

When you set up two strain gauges at each side of the frame, the load on one side frame equals to a half of the load becomes setting value and shown as certain kN in RH and LH independently, plus total kN in the display.

This prevents any damage to the tool and to the press. We are taking the method that the machine gives warning signal to operator through LED lamp when the machine is in overload emergency stop status from electric signal uis the load gauge note We don’t use the torque limiter approach attached to the flywheel discharging overload energy. Rotary 3 position Cam Limit Switch. Attention is required that there is no relationship or relativity between the forming energy and the load display.

Our company does not employ this method because in case of hardened spring adjustment of the torque limiter by mistake, machine may always running with overload and finally machine may brake. The frames are stress relieved before machining.