Which type of riveting machine is better to choose? What is the working principle?

When it comes to riveting machines, most people may not know what a riveting machine is? Riveting machine is a new type of riveting equipment developed based on the principle of cold rolling, which refers to a mechanical device that can use rivets to rivet objects together. So, once you understand the riveting machine, you must know its working principle:Working principle of riveting machine:The working principles of riveting machines are generally divided into two types, namely radial and rotary rolling. They have significant differences in structural implementation and motion trajectory, as shown below:1. Radial riveting machine: The motor transmits motion to the spindle through a coupling, and the spindle transmits motion to the spherical motion pair through a planetary mechanism with few tooth differences. At the same time, the hydraulic system drives the piston and the spherical pair to apply downward pressure. When the rivet head contacts the rivet, it rotates around the rivet centerline (i.e. the spindle centerline) in an 11 petal plum blossom motion trajectory to perform non sliding rolling on the rivet, completing the riveting work.riveting machine2. Rotary riveting machine: The motor transmits motion to the main shaft through a coupling, while the hydraulic system drives the piston and the main shaft to apply downward pressure. When the rivet head contacts the rivet, it revolves around the rivet centerline (i.e. the main shaft centerline), while the rivet head rotates under tangential force, thus forming non sliding rolling.

Precautions for operation of riveting machine

1. Do not process tasks beyond the standard and nominal requirements.2. Do not work for long periods of time under high pressure.3. The length of the rivet head should not exceed the rules.4. Hydraulic oil should be replaced after one year of use.5. Radial equipment should be regularly coated with smooth oil.6. Immediately park and repair in case of any abnormality, until the fault is cleared.7. The installation and removal of the rivet head of the riveting machine should be slow, especially when disassembling the rivet head, do not use brute force to pull it out. Instead, rotate the rivet head and slowly pull it out with downward force. If the rivet seat for inserting the rivet head is pulled out of its normal position, there will be a significant error in the orientation of the rivet head after installation. At this moment, the red safety cover should be removed and the rivet seat should be installed in place before use, otherwise the machine will be easily damaged.8. The guide rails of the equipment should be coated with butter once a month to make them smooth and rust resistant.9. When using rivet heads to process certain materials, there may be subtle bonding surfaces. In order to ensure the quality of riveting, the rivet heads should be regularly sorted to avoid thickening of metal bonding. Fix the rivet head onto the chuck of the lathe during sorting, and then polish it with sandpaper.10. After one month of use, the radial riveting machine should be used to smooth the spherical pair.

The riveting process of the riveting machine

Positioning and fixing of assembly parts - making rivet holes - countersunking head sockets - removing burrs and cleaning - re fixing - inserting rivets for riveting - repairing rivets - inspecting - eliminating and replacing unqualified rivets;1. Use a handheld riveting machine to rivetDue to the constraints of the size and shape of the handheld riveting machine jaws, it is generally only suitable for single nail riveting of structural edge riveting seams.The operating procedure is as follows:(1) According to the process specifications or instructions, select the required riveting machine jaw form and riveting punch based on the structural characteristics of the product.(2) Determine the thickness of the rivet joint interlayer using measurement and calculation methods.(3) Install riveting punches on the fixed arm and movable arm of the handheld riveting machine respectively. When riveting flat head rivets, install the rivet head punch on the fixed arm and adjust the distance between the upper and lower punches;(4) Use test pieces of the same thickness as the structure to rivet 1-3 rivets. After passing the quality inspection, riveting can be carried out on the product.(5) Riveting generally adopts the positive riveting method. During riveting, the lower punch of the fixed arm of the riveting machine first contacts the rivet head and adjusts the riveting part. The outer surface should be perpendicular to the punch, and then the valve on the riveting machine is pulled for riveting.During the riveting process, the handheld riveting machine should be flexible and the grip strength should not be too rigid, otherwise it will affect the quality of riveting.2. Use a riveting machine to rivetThe operating procedure is as follows:The riveting stroke device of the riveting machine is installed on the upper part of the bending arm. In order to adjust the height of the rivet head and observe the quality of the rivet head, the positive riveting method is usually used for riveting. When riveting, the rivet is inserted from bottom to top, and each time a rivet is inserted, the riveting machine completes one riveting cycle.

Structural composition of hydraulic riveting machine

The hydraulic riveting machine includes a hydraulic station and a hydraulic cylinder. The hydraulic station is fixed on the base, the hydraulic cylinder is fixed on the frame, and the clamp is fixed on the frame through an adjustable connecting rod. The clamp can clamp and position the rivets sent from the automatic feeding mechanism. The hydraulic system has low noise during standby, which can save electricity consumption and reduce production costs. It has high work efficiency, good processing quality, sturdy machine structure, and easy operation, greatly improving work efficiency.

Which is better, pneumatic riveting machine or hydraulic riveting machine

Pneumatic riveting machine and hydraulic riveting machine are two common types of riveting machines. Their main difference is the way they output power. We cannot simply evaluate which one is better on the surface, we can only say which one is more suitable and practical for you at present. Let's make a simple comparison below, and after reading it, we believe you can make a better choice.Pneumatic riveting machines use cylinders and motors, etc. The size of the cylinder determines the output of the riveting machine, and it is more commonly used for riveting products with relatively small output. The advantages of pneumatic riveting machine are energy saving, environmental protection, low cost, and easy maintenance. Especially suitable for manufacturing enterprises with high environmental protection requirements.Scope of application: Manufacturing of aluminum alloy doors and windows, computer peripherals, electronic manufacturing, and various other riveting operations;Application: Sheet metal fastening connection structure industry such as aviation industry; Computer cases, electrical cases, kitchen cabinets, etc. need to be pulled and tightened; Aluminum alloy doors and windows, interior decoration, etc. need to be fastened.Hydraulic riveting machine is a riveting machine that organically combines mechanical, hydraulic, and electrical control technologies. The hydraulic riveting machine's oil pressure system includes a hydraulic station and a hydraulic cylinder, which uses the principle of air oil boosting to achieve the requirements of fast action speed and high pressure. Pressure adjustment is easy, as long as the corresponding pneumatic pressure is adjusted, the desired pressure can be obtained, which is simple and convenient.Suitable for industries such as automobiles, ships, bridges, boilers, construction, and hardware, especially widely used in the riveting production line of automotive beams. Its characteristics are large riveting force, high riveting efficiency, low vibration, low noise, reliable riveting operation quality, and also reduce the labor intensity of workers;