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Armarego EJA and ZhaoH (1996) established a thin core core standard twist drill, thin core multi-groove drill and arc center edge twist drill cutting force prediction model. Bhatnagar N (2004) and others studied the unintended damage of the workpiece when drilling anisotropic fiber-reinforced composites with four different drill tips, and established a model for drilling axial force and torque.
SahuSK (2004) et al. proposed a cutting force prediction model with a chip breaker cone taper drill, which is calibrated with a drill bit with four different chip breakers and is suitable for drill bits with any chip breaker shape. ElhachimiM (1999) developed a cutting force model for high-speed cutting bits using a right-angle and bevel cutting model. The test was performed at a speed of 4000 r/min to 18000 r/min and a feed rate of 0.12 mm/r to 0.36 mm/r. The results are consistent with the model prediction values. WangLP (1998) and others proposed to obtain the dynamic mechanical properties of the entire drill bit by analyzing the vibration of the unit cutters that make up the main and chisel edges, and based on this, established a prediction model of dynamic axial force and torque during the vibration drilling process.
As the research progressed, the researchers found that the mechanical models that had been established in the past could not be applied to the new drill type due to structural differences. To this end, StepensonDA (1992) used a unit tool bevel cutting force model calibrated with a large number of turning experiments to establish the main blade torque and shaft for drilling gray cast iron with any bladed carbide or studded carbide drill. Force and radial force prediction models. LinGC (1982) and Watson AR (1985) pointed out that the underestimation of drilling torque and axial force is due to chip evacuation. This discovery eventually led to the generation of unit tool nonlinear synthesis method, and also used analytical methods to build complex The cutting force model of the blade bit is made possible. WangJL (1994) studied the chip evacuation during cutting, and applied the unit tool nonlinear synthesis method to establish the cutting force model of any blade bit based on the empirical unit tool bevel cutting force model.
In addition to the basic geometry of the drill bit, many factors in the drilling process can affect the drilling force. In 1996, ChandrasekharanV et al. considered the manufacture of the drill bit and the sharpening error such as the contour of the two main edges, the radius error, the axial deflection, etc., and established a complete three-dimensional cutting force model of the cone drill bit, and then It expands to predict the cutting force of any shape drill bit (eg group drill). SriramR established a model to predict the radial force of drilling while considering the influence of drill sharpening and installation error on the drilling force. In 2001, GongYP and EhmannK established a micro-hole drill axial force, torque and radial that take into account the geometry of the drill bit, sharpening and mounting errors, and the influence of bit deflection on the dynamic cutting thickness and cutting area of ​​the main and chisel edges. Force model.
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Drilling force modeling promotes new drill bits and drilling processes
Abstract The research on drilling force modeling is deepening with the development of various new drill bits and drilling processes. WuSM et al. have done a lot of work in building a group drilling force model. Among them, LeeSW (1986) and FuhKH (1987)...
The research on the modeling of drilling forces is deepening with the development of various new drill bits and drilling processes. WuSM et al. have done a lot of work in building a group drilling force model. Among them, LeeSW (1986) and FuhKH (1987) based on the working cutting angle, using the bevel cutting model for the main cutting edge, and using the right-angle cutting model for the second cutting edge, the cutting force model of the group drill is established; HuangHT (1992) et al. proposed a method for predicting the axial force and torque of a group drill using a mechanical model of a conventional twist drill.