Recently we found an article about the introduction of full rolling movement without slipping technology on the internet. Let's make a simple understanding about this called "new" technology, actually it is a totally backward technology without anything created and innovated, and the more serious thing is that it is unqualified technology without any verification of Quality Control System.

The original text is as follows " Due to a built-in or external type synchronous speed limit is adopted on the positioning system for the orbital riveting machine main spindle, therefore it can work same as the radial riveting machine. Because of the movement is full rolling without friction or sliding when the rivet head contact with rivets, which revolutionized the way to overcome rivet head self-rotation by friction between the rivet head and rivets, thus, this new technology combines the advantages of radial riveting machine and orbital riveting machine, riveted joint deformation is small, no damage coating when riveting, high reliability, simple structure, low cost, no vibration, easy to maintain."

As a leading manufacturer of riveting machine industry in China, it is our responsibility to check out the real face of this called new technology. We have to make users understand the principle and function of the technology.

Definitely the technology of full rolling movement without slipping is referred as applying a restrictive device to limit rivet-head rotation on the basis of orbital riveting machine, in order to avoid relative friction between rivet and rivet head, so as to improve the quality of processing surface. The device is actually making simple, the manufacturing costs have gone up only 16-30 USD, in fact, a pin rod was installed in the narrow vertical ramp to limit the rotation of the rivet head. This technique has been applied at least 5 to 7 years ago, it should not a new technology, so since it have been enumerated many advantages of online, Why is the technology has not been popular for so many years? The answer is obvious-backward technology.

Firstly, Orbital riveting machine is actually a simplified structure from complex radial riveting machine, so it still belongs to the economic class riveting machine whatever any auxiliary devices added, Generally orbital riveting machine is used to machining common purpose which the requirements of surface quality is not so high, however the better choice is radial riveting machine if users like to perform the high surface quality requirement. The performance of full rolling without sliding technology is just medium between orbital and radial, which cannot meet the high demand as radial riveting, as well not obviously improved than orbital riveting, so the application range is not clear. ¡£

Secondly, the obvious shortcomings of full rolling without sliding technology include high noise and interference increasing. Noise is mainly caused by violent collision between pin and sliding pads, the interference is caused by external rotation limit device, it will disturb the long work-piece due to 60-100mm pin's length.

However, the riveting machine which adopted full rolling movement without sliding technology has increased the price considerably, but actually costs increased only a few dollars, resulting in price difference.¡£

IRIVET Machinery has established a strict quality control management system. The rivet head self rotation movement of BM9 model orbital riveting machine has been controlled successfully. BM9's self rotation movement is less than 1 ~ 2 circles per minute, the rotational speed is close to full rolling without sliding machine, it has no difference on the riveting quality, so there is no necessary to increase the limit switch device. One of the key symbol of qualified riveting machine is to monitor rivet head rotation situation on load condition, the rivet head rotates more slowly if equipment manufacturing error is smaller, we believe that it is necessary to adopt the limit switch device only when the rivet head self rotation is more than 6 RPM, to ensure that equipment can basically complete the riveting process.

At present, there is no verification standards on the self rotation of the riveting machine, we have every reason to believe that, it is a unqualified products if adopt limit switch devices to lower the rotation speed of rivet head.