In electric grippers or servo grippers, the motor controls the movement of the jaws through the electrical input from the robot controller. These end - of - arm tools are increasingly emerging in the industrial market. The following are five advantages of using electric grippers compared with other types of robot grippers.
-
Control of Gripper Position
By using an encoder - equipped motor and an appropriate control scheme, the position of the jaws can be determined with an electric gripper. In contrast, for traditional grippers, the entire stroke usually needs to be traversed. When using an electric gripper, it is flexible to approach the part with only a small necessary clearance and then make a short stroke to pick it up. Partial opening and closing helps in selecting a wider range of part sizes without affecting the production cycle.
-
Check of Gripping Force
With an encoder, you can determine whether the gripper has picked up a part. Some electric grippers send this information back to the robot controller. In many applications, it is necessary to check the grip to prevent errors. Doing this at the gripper level can avoid putting additional sensors in the loop, simplify integration, and reduce the total cost.
-
Control of Grip and Speed
Since the motor current is proportional to the applied torque, the gripping force applied by the jaws can be controlled. The closing speed can also be controlled. For example, this can be helpful in handling fragile parts.
-
No Air Hoses: Saving on Power and Maintenance Costs
Many companies are switching from pneumatic to electric to reduce operating costs. An important aspect of this transition is the reduction in the cost of pneumatic hardware and energy costs.
-
Clean Gripping
Some applications require a clean environment, as air leaks could otherwise cause contamination. In such cases, an electric gripper is a viable option for picking up parts.
These are the advantages of servo - electric grippers. The main features of the robotic gripper are as follows: Driven by a motor, it can close and open the gripper fingers, and the positioning points and clamping force are controllable. Through PLC (Programmable Logic Controller), industrial computer, single - chip microcomputer, and motion controller, it can achieve the functions of grasping and positioning objects. It is a flexible execution terminal of mechanical equipment.
Mechanical grippers are mainly used in the field of industrial automation. Some models have a self - locking mechanism to prevent damage to workpieces and equipment in case of a power outage, which is safer than pneumatic grippers. The opening and closing of the gripper have a programmable control function, enabling multi - point positioning, with more than 256 stopping points possible. The acceleration and deceleration can be controlled, minimizing the impact on the workpiece. In contrast, the pneumatic gripper has an impact process, which is inherent in its principle and difficult to eliminate. The clamping force of the mechanical gripper can be adjusted, and force closed - loop control can be achieved. The clamping force accuracy can reach 0.01N, and the measurement accuracy can reach 0.005mm. It is widely used in industrial automation, as well as in enterprises manufacturing mobile phones, TVs, home appliances, and automobiles/automobile parts.
津公网安备 12011202000591号
