Drilling equipment

Glass drilling machine is a special equipment used to drill holes in glass, drilling holes from both sides of the glass. The drill bit is made of abrasive and metal sintered, and the middle is hollow to facilitate the passage of coolant. The drill bit wall thickness is about 1mm, the abrasive is generally 80-180 diamond sand, and the metal is brass.
Glass drilling machines include horizontal drilling machines and vertical drilling machines.

Horizontal drilling machine

The following images is a horizontal drilling machine, which is generally composed of a base, an arched arm, a workbench, upper and lower spindles, a transmission device, a glass clamping device, a pneumatic system, a cooling water system, a cylinder, a control box, and other parts.
The glass drilling machine adopts pneumatic control. Press the operating handle lightly. The glass clamping device installed at the lower front end of the arched arm presses the glass under the action of the cylinder. A layer of rubber is bonded under the pressure plate to prevent the glass from vibrating. The cooling water of the lower drill bit is turned on and it rises quickly. When it approaches the glass, the damping cylinder acts,, and the drill bit rises slowly to drill the glass. The function of the damping cylinder is to make the drill bit rise slowly so that the feed speed of drilling the glass is appropriate so that the glass is not broken on the one hand and the edges of the drilling hole are not broken on the other hand. The lower drill bit first automatically drills about 1/2 of the thickness, and then the upper drill bit is pressed down by hand. The upper drill bit passes through the middle of the pressure plate of the glass clamping device. The cooling water of the upper drill bit is turned on and the hole is drilled manually (set). It is equipped with a pneumatic lifting workbench to support large-area flat glass.
Advantages of a horizontal drilling machine: ① Semi-automatic operation, easy operation of the whole machine; ② High concentricity of drilling (trenching), easy adjustment, and no edge cracking.

Vertical drilling machine

The vertical drilling machine, shown in Figure 2-29, is used for batch processing of large-scale glass with multiple holes. It offers high positioning accuracy and production efficiency, with an X and Y-axis positioning deviation of approximately 0.25mm. The machine consists of several key components, including the Y-axis glass support frame, front and rear drill devices, a computer display, X-axis, base, drill lifting motor, lifting transmission device, X-axis positioner, and control box. The machine operates using a CNC system, where the drilling origin is pre-set and remains unchanged throughout the process. Before drilling, the appropriate drill bit is selected, and the glass is placed on the X-axis, aligning with the glass frame. After entering the hole shape and position data into the computer, the machine optimizes the drilling sequence. The glass is transported to the first drilling position, and the front and rear drill bits move to the Y-axis position. The glass is secured by the pressing plate, and the rear drill bit begins drilling with controlled speed and cooling water. Once it reaches halfway, the front drill bit completes the hole. The process is repeated automatically for all required holes.

This vertical drilling machine is designed for drilling holes in flat glass ranging from 150mm to 2500mm in height and up to 4000mm in width, making it an ideal choice for processing glass used in building curtain walls. The automated CNC system ensures precision and efficiency, optimizing the drilling sequence based on input parameters. By synchronizing the movement of the drill bits and utilizing damping cylinders, the machine achieves high-quality hole processing with minimal defects. The cooling water mechanism further enhances drilling accuracy and prevents overheating, reducing the risk of glass breakage. The combination of an automated X-axis transportation system and a synchronized drilling process significantly improves productivity in large-scale glass manufacturing.

However, certain quality issues may arise during operation. Hole edge bursting can occur if the drill bit is dull or if the feed speed is too fast; this can be resolved by sharpening or replacing the drill bit and adjusting the damping cylinder. Misalignment of front and rear holes may be due to improper positioning of the drill head motors or a damaged motor seat bearing, requiring adjustment or replacement. Additionally, deviations in the upper and lower hole positions can be corrected by adjusting the X-axis horizontal alignment. Proper maintenance and calibration of the machine help ensure consistent drilling precision and high-quality glass processing.

Laser drilling equipment

Laser drilling glass equipment uses advanced laser technology and is designed for high-precision drilling of glass materials. Compared with traditional mechanical drilling methods, the equipment avoids mechanical stress damage to glass through non-contact processing, significantly reducing the probability of microcracks and edge collapse. The laser spot size is small, and the heat-affected zone is low, which can achieve smooth and high-precision aperture edges, making the quality of each drilled hole consistent and meeting strict application standards. The equipment can perform drilling operations on various types of glass, including ordinary float glass, tempered glass, Low-E glass, and optical glass, and flexibly adapt to multiple processing needs.

The speed of laser drilling equipment is highly efficient, and it can achieve a processing efficiency of thousands of holes per minute. A digital control system accurately controls the position and diameter of the holes to ensure processing accuracy and consistency. The equipment is suitable not only for conventional round hole drilling and opening holes in complex shapes such as ellipses and squares. In addition, there is no need to replace the mechanical drill bit or use coolant during laser drilling, which reduces the maintenance requirements of the equipment and the pollution problems in the production process, significantly improving the environmental protection and economy of the production line. The laser drilling process is particularly suitable for automotive glass, architectural decorative glass, electronic component glass and other fields. Especially in application scenarios that require high density and small aperture, the advantages of laser drilling are more prominent, and it can perfectly achieve high-quality and high-efficiency glass processing.

High pressure water jet drilling equipment

High-pressure water jet cutting machines have significant advantages and advantages in glass drilling and are particularly suitable for high-precision drilling of thick and special-shaped glass. The equipment can drill precise and smooth-edged holes in the glass through high-pressure water jets combined with abrasive particles, avoiding the micro-cracks and edge defects common in traditional mechanical processing. The drilling process is a non-thermal process, which will not cause thermal stress to the glass, thereby ensuring the integrity of the material and the high quality of the hole.

In addition to the drilling function, the equipment can perform simple cutting operations when necessary to meet comprehensive processing needs. Its high efficiency and high-precision drilling capabilities make the equipment particularly suitable for use in architectural glass, artistic decorative glass, and other fields. It can easily handle holes with large apertures or complex shapes. High-pressure water jet drilling provides stable and reliable processing results and is an ideal choice for high-quality glass drilling.

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