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搖臂鉆床控制的過程、要求分析

2020-07-15 22:46來源:未知瀏覽:

搖臂鉆床控制的過程、要求分析

(1)電力拖動方面裝置

搖臂鉆床裝配了四臺三相鼠籠式異步電動機。下面是關于裝配電動機的簡單介紹,Ml是主軸電動機、M2是搖臂升降電動機、M3是液壓泵電動機、M4作為冷卻液泵電動機。在電路保護方面,保護總電源的開關為低壓斷路器QS,通過FU1熔斷器能實現它在短路方面保護,同時套用了FU2熔斷器對M2、M3進行短路方面保護,過載保護將通過熱繼電器FR來實現。主軸電動機M1,搖臂升降電動機M2、和液壓泵電動機M3都是通過接觸器控制的。低壓斷路器SA1則控制著冷卻泵電動機M4。

搖臂鉆床電氣控制系統電路圖

(2)控制要求

1)對主軸電動機Ml上的控制。Ml主軸電動機是單一方向進行旋轉的。

2)對搖臂升降電動機M2上的控制。搖臂鉆床在工作狀態的時候,它的力臂需要一直在夾緊的狀態下,用來保證加工工作時精度的要求和安全。

3)對液壓泵電動機M3上的控制。M3液壓泵電動機可以進行正反方向的轉動,繼而帶著動液壓泵,令液壓系統的夾緊機構完成了夾緊與放松的實現。

4)對主軸箱與立柱夾緊與放松上的控制。主軸箱以及立柱的加緊與放松可以同時進行。

5)對冷卻泵電動機M4上的控制。單一方向旋轉上的實現。

 

Process and requirement analysis of radial drilling machine control

(1) Electric drive device

The radial drilling machine is equipped with four three-phase squirrel cage asynchronous motors. The following is a brief introduction to the assembly motor. Ml is the spindle motor, M2 is the rocker arm lifting motor, m3 is the hydraulic pump motor, and M4 is the coolant pump motor. In terms of circuit protection, the switch to protect the main power supply is the low-voltage circuit breaker QS, which can be realized in the short-circuit aspect through fu1 fuse. At the same time, fu2 fuse is applied for short-circuit protection of M2 and M3. Overload protection will be realized by thermal relay fr. The main shaft motor M1, rocker arm lifting motor m2 and hydraulic pump motor m3 are controlled by contactors. Low voltage circuit breaker SA1 controls the cooling pump motor M4.

(2) Control requirements

1) Control of spindle motor ml. The ML spindle motor rotates in a single direction.

2) Control of rocker arm lifting motor m2. When the radial drilling machine is working, its arm should be clamped all the time to ensure the accuracy and safety of machining.

3) Control of hydraulic pump motor m3. M3 hydraulic pump motor can rotate in the positive and negative directions, and then move the hydraulic pump, so that the clamping mechanism of the hydraulic system can achieve clamping and loosening.

4) Control the clamping and loosening of headstock and column. The tightening and loosening of headstock and column can be carried out at the same time.

5) Control of cooling pump motor M4. The realization of single direction rotation.

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