2 Internal Spindle Collet Taper The inside taper of the spindle and tool holder

2 internal spindle collet taper the inside taper of

This preview shows page 2 - 4 out of 10 pages.

2. Internal Spindle & Collet Taper The inside taper of the spindle and tool holder is a critical surface which accumulates resin build up. To maintain best concentricity, they should be cleaned at each tool change. Felt brushes are available to fit most taper sizes and provide a quick means of removing short-term buildup. 3. External Collet & Tool Holder Taper The outside taper of the spindle and tool holder require regular inspection and should be cleaned of all deposits each time the tool is changed. If the tapers are regularly maintained, felt cloths can be used. If not maintained, and the buildup is excessive, brass brushes will work well for cleaning. 4. Clamping Nut Surfaces The inside taper of the nut should be clean and free of burrs on the surface. Any surface burrs or contamination will not only skew a collet but can also permanently ruin a new collet. Clean the clamping nut during every tool change with a brass brush. Special care should be taken to examine the clamping nut threads on a regular basis. 5. Thrust Bearings Some collet nuts have an integrated thrust bearing connected to the inside taper. This bearing serves to reduce friction wear between the collet and nut as the nut is tightened. The bearing seating surface is the most critical feature and must be kept clean. The bearings should also be kept in smooth operating condition. Contamination or abuse will cause rough movement with the bearing. Either instance is indicative of runout and poor operation.
Image of page 2

Subscribe to view the full document.

6. Tool Holders Tool holders such as the ISO 30 have additional matching and mating tolerances beyond those of the older tapers. Because of their unique design, these tool-holding systems can be more prone to runout caused by resin buildup. Fretting or “'Bronzing” will cause inconsistent gripping in the taper and/ or the flat mating surface and reduce consistency of tool life. If ignored, these conditions can eventually produce premature spindle failure. The mating surfaces should be cleaned with Rust Free and hand dried immediately. Note: To ensure trouble free operation, always insert the collet into the collet nut until it clicks in and thread it loosely onto the spindle prior to inserting router bit. All six of these components are critical and should be regularly maintained. It is important to remember that collets should be replaced on a regular basis, approximately every 400 to 600 run time hours. This means inspection for metallic damage such as bell mouthing or burrs with every tool change. If metallic damage is visible; the collet should be discarded and replaced. Also consider that even if there is no damage present the collet can be worn out through metal fatigue. Heat is directly transferred from the tool to the collet.
Image of page 3
Image of page 4
  • Fall '19
  • Tools
  • Milling cutter, High speed steel, Cutting, Collet, Downcut Spiral

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes