How to Start A Business with Mini Cnc Machine?
2022/01/31 By 兰兹
CNC machine construction
Many points depict the control mechanism of a mini cnc machine table consisting of a servo motor and actuator. The control commands make the servo motor rotate; the rotation of the servo motor transmits to the lead screw through the coupling. When the lead screw rotates, the nut moves straight, and the table with the workpiece moves along.
Furthermore, it shows the spindle assembly, including the spindle motor (usually asynchronous motor) and the cutter head. The rotation of the spindle motor transmits to the cutter head through a belt drive to change the speed and torque of the cutter head.
Drive motors and sensors of a mini cnc machine
The term “drive motor” includes the table-moving servo motor and the spindle motor. The spindle is a device that generates cutting speed and torque by rotating a tool or workpiece. High torque and high speed are significant for spindle motors. Therefore, asynchronous motors are often standard.
The table-moving servo motor needs high torque, instantaneous acceleration, and fast, low-speed response. It can control speed and position simultaneously.
Types of servo motors commonly standard in CNC machines
DC servo motor
The DC servo motor controller can efficiently be designed using a simple circuit because the torque is directly proportional to the current. The speed range of a mini cnc machine is extensive, and the cost is low. However, the engine’s temperature increases when the engine power increases. The friction between the rotor and the brush leads to wear and noise. DC servo motors need periodic brush maintenance.
Synchronous AC servo motor
The synchronous AC servo motor is called a “brushless servo motor.” The motor structure allows the stator core to cool directly from the outside, thus counteracting the temperature rise in the motor. AC synchronous servo motor has no maximum speed limit due to no spark. High torque can be achieved at a high-speed range. In addition, the mini cnc machine is also brushless to operate for a long time without maintenance.
Asynchronous AC servo motor
The asynchronous AC servo motor has a simple structure and does not need to sense the relative position deviation between the rotor and the stator. However, it cannot stop instantaneously, unlike AC servo motors.
Encoder for detects the current position of the motor shaft
The device that detects the current status of the motor shaft for position control calls an encoder and attaches to the end of the motor shaft. To control the velocity of the mini cnc machine, speed needs to be measured by a sensor or calculated as the number of pulses generated per unit of time.
Guide system for axes
Ball screws are standard for moving the table because they have low friction and small displacement, resulting in high transmission efficiency and high positioning accuracy. The guide common is a slide rail, also known as a linear slide (LM), to increase linear motion’s accuracy and smoothness.
How much does a mini cnc machine cost to make molds?
Mold is the foundation of the modern manufacturing industry, applied in various fields. With the substantial rise of the industry, the level of technology has improved and changed a lot to enhance mold making.
Many businesses pay special attention to the price of mold-making services. However, the issue of mold prices is only the beginning. Suppose it is necessary to calculate and plan a project’s overall cost of plastic injection molding, not only the price factor but many other vital factors. Consider the cost of materials, operation, and repair to fix the mold later.
In general terms of cost to make cnc machine molds
Depending on the structure and complexity of mini cnc machine processing, the cost of the mold has many differences. Plastic injection mold prices can range from $1,000 to $80,000, with a typical mold around $12,000 on average.
The factors determining the cost of a mold are many, such as the detailed size of the required parts. The complexity of the mold structure, the expected material, and the quantity. Therefore, to give the most accurate price for a type of mold. Calculating all the above factors takes some time to find the most reasonable price for both sides.
Is injection molding technology cheap?
Suppose you are in the process of considering the cost of multiple mini cnc machines. You may find that injection molding is one of the most cost-effective forms of manufacturing because injection molding technology allows the creation of many products with only one mold. The price per product is cheap.
This will be more evident through long-term projects, meaning the initial cost of making molds may be high. However, the project’s price will be more optimal as production continues.
The cost of making plastic injection molds
Calculating injection molding costs is extremely important for any manufacturing project. One of the first steps in calculating the price of a mini cnc machine based on the requirements and characteristics of the product:
- Prototyping time
- What does the bond look like?
- What production technology should be standard?
- Complexity in production
- Determining these factors will help estimate whether the mold product costs are high or low.
Cost of injection molding materials
An important factor related to mold price is the choice of injection molding material. Moreover, the injection molding material also relates to how the mold is produced and what material it manufactures.
Labor cost to operate
The cost of hiring workers to operate mini cnc machine is relatively low due to the perfect application of automation in the plastic production line. This is also a fixed cost that the manufacturing unit needs to include in the mold cost calculation.
Cost of machine operating time
The production time of the machine will be affected by many factors. If the machine operating cycle is longer, the impact on energy. Machine wear and labor will also increase accordingly. Several factors can affect the amount of machine uptime:
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