Non-standard tooth rubbing equipment for automotive grinding and turning tools for processing rollers

First, an overviewNon-standard teeth rubbing equipmentThe transformation process of factory scrap wheels

1. Old process: annealing - shrinking holes - high temperature tempering - mechanical processing - quenching - tempering - grinding inner holes - polishing.

Specific method: The waste roller is heated and annealed as a blank. In addition to selecting large waste rollers with small outer diameter and width dimensions, the thread can also be used to process thread scrapers. The number of heads is reduced to a new number of heads. For the hole diameter of the waste wire to be improved, the hole diameter becomes a small diameter, and a transition bushing can be added. The waste wire wheel can be transformed into a roller with the same hole diameter through the heat treatment shrinkage process. .

It can be seen that the process is basically the same as the process of manufacturing a new roller and usually only the blank material charge is omitted.

2. The new process does not anneale the surface of the hard truck surface oxide and wear-resistant layer, and then harden (or grind) the thread, eliminating heat treatment processes such as annealing or even quenching blanks (determining whether requenching is required based on the wear of the scrap wheel and the original hardened layer). By adopting this method, heat treatment processes such as return and quenching are omitted, and the renovation costs are greatly reduced. The premise of this process is the key processes and tool selection of "drive and grinding". The following is a discussion about the process of replacing grinding with large volume turning.

2,Non-standard teeth rubbing equipmentKey craftsmanship and turning tool for grinding rollers

As we all know, the most critical process for manufacturing new rollers is quenching heat treatment, which directly determines the quality and service life of the roller thread. In the manufacturing of new rollers, the thread is mainly manufactured before quenching; in the case of reheating, the deformation and pitting of the thread must be controlled, which will not be described here. The following is the concern for refurbished rollers with cars.

The outer circle of the waste roller usually requires processing of 1mm-2mm edges to remove the original wear layer. If grinding is used, it is obviously time-consuming and labor-intensive; when machining with hard metal turning tools,Non-standard teeth rubbing equipmentIt often collapses and can only be used more. The second pass can eliminate machining allowance, extremely long tool life and low machining efficiency.