Tag Archives: drill grinding machine

The selection of main geometric parameters for the grinding of twist drill bit

The main geometric parameters of twist drill include the choice of cutting lip angle, the choice of land angle of cutting edge and lip clearance angle of cutting edge, the analysis of the influence of helix angle on the life of drill bit and the treatment of cutting edge.

 

Cutting lip angle determines chip width and bit front angle. When the diameter and feed of the bit remain unchanged, increasing the top angle will narrow the iron filings and reduce the load per unit cutting lip. Cutting lip angle has a great influence on the land angle. Increasing cutting lip angle correspondingly can improve the cutting conditions at the core. Cutting lip angle affects the direction of chip outflow. According to the relevant tool design data and the characteristics of low hardness but high viscidity of the processed product, the cutting lip angle of the bit is selected to be 140°.

 

The land angle of a twist drill is determined by other geometric parameters of the drill. In high-speed cutting, the rake angle has little influence on cutting deformation and cutting force, and the strength of tool tip can be enhanced with a smaller land angle. When the land angle is determined, the bigger the lip clearance angle is, the sharper the edge is, but the wedge angle will decrease correspondingly, which will affect the strength and heat dissipation area of the tool. For this purpose, the lip clearance angle of the drill bit is selected as a smaller one, which is 8°.

If you choose our drill grinding machine, you can easily finish the drill grinding work. You can achieve the desired results by choosing the right chuck according to your drill bit. Our drill bit grinding machine makes complex drill grinding easy. If you are interested in our products, please contact us. We are a manufacturer of drill bit grinding machines. The price is relatively favorable. We welcome agents to negotiate business.

What are the rewards for drill bit sharpening machines?

the drill bit grinding machines produced by purros are sold all over the world

  1. Save more than 70% of the cost of drill bits

 

  • 1). Old tools become new tools. A drill can be sharpened at a small cost. It saves you a lot of money.
  • 2). Old tools such as drill bit/milling cutter tool can be grinded and reused.
  • 3). The grinding capacity of each tool is only 0.4mm, and each tool can be grounded more than 10 times.
  • 4). It solves the problem of traditional manual grinding tool (non-standard, short life and long time).
  • 5). High grinding precision, extend tool’s life.
  • 6). It can not only grind high-efficiency drill bit, but also can grind common drill bit into high-efficiency drill bit.

 

  1. Improve machining efficiency by 3-6 times

  • 1). It takes an average of one minute to repair and grind a drill bit, with high grinding efficiency.
  • 2). Our bit grinding machine has high precision and good processing quality .
  • 3). The life of the drill grinding machine is long and the auxiliary time is small.
  • 4). This machines have fast to feed speed and high processing efficiency.
  • 5). The machines have been reduced processing procedures and improved work efficiency.

 

  1. Solve more than 80% of processing problems

  • 1). With one machine can repair and grind drill bits (milling cutter) of various diameters.
  • 2). The quality of the grinding machine is good, and the precision of the drill bit is guaranteed.
  • 3). Drill bit grinder can improve the cutting performance of the tool and improve the machining efficiency.
  • 4). The machines have small cutting load and long tool’s life.
  • 5). The drill bit grinder can reduce the breaking edge of milling cutter and improve the service life of milling cutter.
  • 6). Our grinder machine can solve the problems of hole deviation, hole expansion, hole shrinkage and burr in general hole processing.
  • 7). Using our machines will solve the problems of short drill life, low drilling efficiency and difficult chip discharge caused by deep hole machining.

 

  1. Provide perfect after – sales service

  • 1). Provide customers with the most professional and economical purchasing plan fro free of charge.
  • 2). Help customers to check the machine platform for free, and develop special grinding tool’s SOP.
  • 3). Help customers improve the processing technology and improve the processing efficiency for free of charge.
  • 4). Provide customers with professional tool’s knowledge and advanced processing technology for free of charge.

 

Glad Tidings: PURROS’s Universal Tool Grinder successfully entered the Kuwaiti market

Kuwait, officially the State of Kuwait is a country in Western Asia. Situated in the northern edge of Eastern Arabia at the tip of the Persian Gulf, it shares borders with Iraq and Saudi Arabia.

PURROS's Universal Tool Grinder 600F, buy drill bit grinder

PURROS’s Universal Tool Grinder 600F

Congratulations to PURROS Machinery Co., Ltd. that PG-600F Universal Tool Grinder to successfully enter the Kuwaiti market.
The success in Kuwait market, fully reflect powerful competitiveness of PURROS drill grinding machine in drill grinding industry of Kuwait, at the same time, it has also enhanced our brand awareness in the throughout Middle East.
Pursue higher quality to build more perfect products and continue to explore overseas markets, which is the responsibility and goals of the PURROS Machinery Co., Ltd. We will continuously improve product quality and better serve global customers. Thank you!