A new manual punching tool for machining hexagonal holes in aluminum alloy

Hexagon rivet nuts are used in many aluminum alloy structural parts, so hexagonal holes need to be machined at the corresponding positions of the products for installation. In order to ensure the accuracy of the installation hole, the hexagonal hole needs to be machined after the overall welding is completed. Because the workpiece after welding cannot use two-dimensional cutting method or punch, it can only use manual punching or three-dimensional cutting technology to process hexagonal holes. Manual punching of hexagonal hole is a punching method that directly uses a punch to hammer. This processing method has great operational difficulty, and the punch is not easy to exit, which seriously affects the processing quality and work efficiency of aluminum alloy processing.
In order to reduce the difficulty of manual hexagonal hole punching operation and improve the punching quality and efficiency, designers designed and made a simple, efficient, practical, reliable, flexible and economical manual hexagonal hole punching tool.

Structural design of a new manual punching tool
This new manual hexagonal hole punching tool has a creative design idea - integrating the structure of punch, hammer and so on, which can greatly simplify the preparation and operation of the tool.
The whole structure is composed of handle, punch, connector and hexagonal punch. The handle, punch and connector are all made of 45 round steel, and only the hexagonal punch is made of high-speed steel. The handle plays the role of guiding the ram to slide up and down, and the front end is processed into M20 external thread to connect with the connector. The impact hammer mainly plays the role of sliding hammer up and down. The connector is mainly a connecting handle and a hexagonal punch. The hexagonal punch can be directly punched on the workpiece, and the hexagonal punch can be replaced as required.

Working principle of a new manual punching tool
The hexagonal punch on the new manual hexagonal hole punching tool is connected and installed with the connector through the thread at the end; The punching hammer is inserted on the handle through the central hole; The handle is connected and installed with the connector through the thread of the end. The hexagonal punch can be customized according to the processing requirements of the product. In order to facilitate punching, the corresponding position of the workpiece needs to be pre processed into a circular bottom hole before punching.
When punching, first insert the front end of the hexagonal punch into the bottom hole pre machined by the workpiece, and keep the hexagonal punch perpendicular to the workpiece surface by adjusting the handle. Next, slide the punch down quickly to make the punch hit the connector. The connector transmits the force generated by the impact of the punch to the hexagonal punch to punch the workpiece. This processing method greatly reduces the operation difficulty of processing.
When punching is completed, slide the punch up quickly to make the punch hit the top of the handle quickly. As the impact produces an upward force, the hexagonal punch is slowly withdrawn from the workpiece through the impact force. This solves the problem that the punch is not easy to exit after punching.

Advantages of new manual punching tools
Through the field use and verification of the new manual hexagonal hole punching tool, it takes only about 10 seconds to punch a hexagonal hole, which greatly shortens the punching time and improves the work efficiency. Moreover, the hole quality punched by this tool is significantly higher than that punched by general tools.
To sum up, there are five advantages of using the new manual hexagonal hole punching tool for punching: first, it improves the punching efficiency and reduces the labor intensity of workers; Second, it reduces the processing cost of hexagonal holes and brings greater profit space to enterprises; Third, the quality of handmade hexagonal holes is improved, so that the product quality of aluminum alloy parts is more guaranteed and customers are more satisfied; Fourth, the operation of the new punching tool is simpler, and the operator is easier to master the key points of operation, which is not easy to cause workpiece scrap due to errors; Fifth, the punching tool is simple in structure, low in manufacturing cost and easy to popularize.