Ball screw: it has the characteristics of saving raw materials, high efficiency, high strength, high gloss, high precision and good interchangeability. Especially the slender rod, the effect is particularly remarkable, and the cutting screw rod is unable to compare.

一、在對細長絲桿進行調質處理的時候，因為需要進行垂直的吊裝，所以需要在工序中進行鉆孔處理。

1、 When the long and thin screw rod is quenched and tempered, due to the need for vertical lifting, it is necessary to drill in the process.

二、如果規定的工序中需要進行毛坯的彎曲的話，是不可以進行冷校直的，主要是因為對鋼材進行軋制的時候，整個過程中會產生大量的內應力，在經過校直之后，如果不再次進行熱處理將應力去除的話，那么在進行粗車之后還會直接恢復到原來的狀態。

2、 If the blank needs to be bent in the specified process, cold straightening is absolutely not allowed. The main reason is that when rolling the steel, a large amount of internal stress will be generated in the whole process. After straightening, if the stress is not removed by heat treatment again, it will directly return to the original state after rough turning.

三、進行粗車后，還需要進行調質的處理，主要的目的是為了將材料的組織進行有效的改善，細長的晶粒，有效的將內應力進行，將切削的性能進行有效的改善。

3、 After rough turning, quenching and tempering treatment is also needed. The main purpose is to effectively improve the structure of the material, the slender grain, effectively eliminate the internal stress, and effectively improve the cutting performance.

四、為了有用的確保傳動的絲桿精度，在經過長期的使用之后還是不變，可以在加工的過程中，進行二次的氣溫時效處理，可以安排在半精車的后面，目的主要是為了將切削和加工后的內應力進行，有用的保證絲桿在尺寸上的穩定，還有一次則可以安排在粗車的螺紋之后。

4、 In order to effectively ensure the accuracy of the driving screw rod, it will not change after long-term use. In the process of processing, the secondary air temperature aging treatment can be arranged behind the semi finish turning. The main purpose is to eliminate the internal stress after cutting and processing, and effectively ensure the stability of the screw rod in size. Another time, it can be arranged in the rough turning After the thread.

因為整個切除在加工的余量上還是比較大的，而且在經過切斷之后的材料上纖維的組織會導致變形，所以在經過校直之后，整個塑性的變形會導致內部殘留的應力變大，所以必須及時的安排時效的處理工作，讓整個內應力可以得到充分的釋放。

Because the whole cutting in the processing allowance is relatively large, and after cutting the material on the fiber structure will lead to deformation, so after straightening, the whole plastic deformation will lead to internal residual stress increase, so we must timely arrange the aging treatment work, so that the whole internal stress can be fully released.