how to use wnmg inserts for rough and finish turning

wnmg inserts are a popular choice in the world of cnc turning due to their versatility and performance. these inserts are designed for both rough and finish turning operations, making them a valuable tool in any metalworking shop. understanding how to use them effectively can greatly enhance your turning capabilities. here's a guide on how to use wnmg inserts for both rough and finish turning.

understanding wnmg inserts

wnmg inserts are part of the indexable inserts category, which includes inserts with a wavy edge and a positive raked angle. the "w" in wnmg stands for wavy, while "nmg" refers to the insert's chip-breaking geometry. these inserts are known for their ability to handle high cutting speeds and feeds, making them ideal for both roughing and finishing operations.

choosing the right wnmg insert

when selecting a wnmg insert, consider the following factors:

• material: choose an insert material that matches the workpiece material for optimal performance. common materials include hss, carbide, and ceramic.

• insert type: select the correct insert type based on the cutting conditions, such as the depth of cut, feed rate, and cutting speed.

• insert size: ensure that the insert size is suitable for the toolholder and the desired cutting depth.

preparation for rough turning

before starting the rough turning process, follow these steps:

• toolholder: ensure that the toolholder is securely mounted in the spindle and properly aligned.

• insert mounting: install the wnmg insert into the toolholder, making sure it is properly seated and locked in place.

• cutting parameters: set the appropriate cutting parameters, including the depth of cut, feed rate, and cutting speed, based on the material properties and the desired finish.

performing rough turning

when performing rough turning with wnmg inserts, keep the following tips in mind:

• feed rate: start with a lower feed rate and gradually increase it as the tool becomes sharper and the material becomes easier to cut.

• cutting speed: maintain a consistent cutting speed throughout the operation to ensure uniform chip formation and reduce tool wear.

• insert angle: adjust the insert angle as needed to optimize chip evacuation and reduce the risk of chatter.

preparation for finish turning

before transitioning to finish turning, perform the following steps:

• toolholder: ensure that the toolholder is securely mounted and properly aligned.

• insert mounting: install a new or freshly sharpened wnmg insert into the toolholder.

• cutting parameters: adjust the cutting parameters to achieve the desired surface finish, taking into account the material properties and the required precision.

performing finish turning

during the finish turning process, consider the following tips:

• feed rate: use a slower feed rate to achieve a smoother surface finish.

• cutting speed: maintain a consistent cutting speed to prevent tool vibration and achieve a uniform finish.

• insert angle: optimize the insert angle for better chip evacuation and reduced chatter.

conclusion

using wnmg inserts for both rough and finish turning can greatly improve your cnc turning operations. by selecting the right insert, preparing the toolholder, and adjusting the cutting parameters, you can achieve optimal performance and quality in your turning processes.