目录
自动气动副和千斤顶|买机械项188金宝搏怎么样目
概要
持有和释放的工作是开展加工的最重要的行为。这些通常用于机器店。
1.在适当的位置保持工作
2.快速释放作业
3.严格持有这份工作
4. To prevent vibration of the job while the machining is carried out。
There are many types of work holding devices like machine vices swivel vices, universal vice, pipe vice, T-Bolt’s ‘U’ clamps, Goose neck clamp, angle plate, Jigs and fixtures etc. These are all mechanical type work holding devices. In this project we are dealing about the pneumatic plain vice used in drilling machine. Here the loading and unloading is quick. The job can be held more rigidly.
也可以看看：mini project On Pneumatic vice Only
介绍
有三种主要的工作持有设备：
1. Mechanical type
2. Hydraulic type
3. Pneumatic type
在机械类型, the screw rod is actuating the movable jaw. One end is connected to the movable jaw and it passes through a fixed type nut. When we rotate one end of the screw rod it will rotate in the nut and in turn moves the movable jaw. Here the rotary motion is converted into reciprocating motion.
在液压型's one end of the piston rod is connected to the movable jaw and the piston slides in the cylinder. Here the hydraulic fluid actuates the movement of the piston; this in turn actuates the movable jaw. Here the principle movement is only a reciprocating movement. Pneumatic type is same as the hydraulic type. Here instead of hydraulic fluid, air is used.
工作经营
Initially starting with air compresses, its function is to compress air from a low inlet pressure (usually atmospheric) to a higher pressure level. This is an accomplished by reducing the volume of the air.
空气压缩机通常是正排量单元，并且是往复式活塞式或旋转螺杆或旋转叶片类型中的任一种。这里使用的空气压缩机通常是一款通常小的两级压缩机单元。它还包括压缩空气罐，电动转子和滑轮驱动，压力控制和用于快速连接和使用的仪器。压力超过接收器的设计压力，所提供的释放值释放过量的空气，从而保持任何危险的头部。
The compressed air goes to the solenoid valve through flow control valve. The flow control valve is used to control the amount air flow to the cylinder. This flow is adjusted by manually by the nap is fixed above the flow control valve. Then this air goes to the 5/2 solenoid valve. The 5/2 solenoid valve is having one input port, two output port and two exhaust port. The 5/2 solenoid valve is controlled by the electronic timing control unit. The speed of the on/off the solenoid valve is controlled by this timing control unit. The 2 outlet ports are connected to an actuator (Cylinder). The pneumatic activates is a double acting, single rod cylinder. The cylinder output is coupled to further purpose. The piston end has an air horning effect to prevent sudden thrust at extreme ends.
工作原则
- 来自压缩机的压缩空气到达电磁阀。电磁阀根据来自定时装置的信号改变流动方向。
- The compressed air pass through the 5/2 solenoid valve-1 and it is admitted into the front end of the cylinder block. The air pushes the piston for the work piece clamping. At the end of the stroke air from the solenoid valve reaches the rear end of the cylinder block. The pressure remains the same but the area is less due to the presence of piston rod. This exerts greater pressure on the piston, pushing it at a faster rate thus enabling faster return stroke.
- 压缩空气通过5/2电磁阀-2，它进入汽缸体的前端。空气推动活塞，使工作片被提升。从电磁阀从电磁阀的升降冲程空气结束到达缸体的后端。
- 压力保持相同，但由于活塞杆的存在，该区域较少。这对活塞施加了更大的压力，以更快的速率推动它，从而实现更快的返回行程。
- 通过在定时器中进行适当的调整，可以改变活塞的行程长度
优点：
1. Idle time of the machine is reduced.
2. When compared with the mechanical vices, it consumes less time for clamping and unclamping the job.
3. It reduces the manual labour
因此，生产率更高
5. In this mechanism there is no backlash.
缺点：
1.最高成本。
2.可能是空气泄漏的选择
3. Cylinder stroke length is constant
APPLICATIONS:
1. To hold the job rigidly while machining.
2. For quick clamping and unclamping of the job.
建议：
这不仅适用于钻孔机副，使用大容量气缸和副手可用于为大多数加工过程夹紧和松开作业。
More Resources /articles
Pneumatic or Air operated projects
钣金制造项目
New 188金宝搏怎么样Mechanical Projects 2020 ( All Projects Post Index List )
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