GARANT keyway broaching and profile slotting for production of perfect slots and profiles

Broaching: Stable and precise for more productivity in turning

1. Keyway broaching: Stable and precise for more productivity in turning operations

Keyway broaching is a machining process. The GARANT keyway broaching tools enable you to produce slots on conventional CNC lathes. The highest demands on fit, slot shape and width require a lathe with Y-axis or simply the specially patented eccentric bush for the keyway broaching toolholder.

Achieve the highest precision with low set-up and tooling costs. There are no changeover costs and external contracting is no longer necessary – allowing you to save considerable logistical effort. In addition, you benefit from significantly lower procurement costs for keyway broaching tools compared to other processes (e.g. push broaching, wire eroding, etc.).

Large variation: Cutting inserts for slot widths of 2 - 25 mm (normally only up to 14 mm available on the market). Available in tolerances C11, D10, H7 and P9. Production of slots according to DIN 6885-1, DIN 138 and factory standard possible.

Productivity due to extra strong cutting inserts: Increased stability and process reliability. 6.5 - 18 mm (normally only up to 6 mm available on the market). Sintered steel alloy (70 HRC), 13% cobalt, TIN-coated.

Broaching - Advance into new dimensions

  1. Wide product range
    Standard and long version. Working length of 25 - 200 mm.
  2. Customised solutions
    Available on request on short lead times.
  3. Two cooling channel bores
    Optimisation of chip evacuation. Increased surface quality. Cooling of the cutters.
  4. Stable tool design
    Insert seating hardened (58 - 60 HRC). Optimum seating of the cutter insert due to 4-point contact. Centring by Vee shape. Maximum support and continuous backing for highest stability.

Superior to the competition when making direct comparisons.

An analysis of machining forces by the Forschungs- und Transferzentrum e. V. (Research and Transfer Centre) confirms uniform force progression for GARANT broaching. Additionally, the quality of the workpiece surface remains consistently good.

Left column GARANT:
Smooth slot as well as sharp edges and exact corners with GARANT.

Right column competitor:
Clear chatter marks and inexact corners.
Uneven machining forces.

Highest precision – even without a Y-axis.

All slots can be generated on a conventional CNC lathe. The highest standards of fit, slot profile and width require a lathe with a Y-axis or just the special patented eccentric bush for the broaching toolholder.

Inaccuracies due to tolerance chains can lead to symmetry errors.Uncomplicated and quick correction of the y-axis is possible by turning the eccentric bush (s. image at the top, right-hand side).

Advantages GARANT keyway broaching

  1. Clean slot. Sharply cut edges without burrs. Cutting inserts can also include a chamfer. (Broaching into a blind hole requires a suitable relief groove!)
  2. Avoidance of cutter breakage. Sintered steel alloy with 13% cobalt. (Programme a lead-in travel of 15 mm!)
  3. Ideal action of force and easy clearance of the swarf. (Install the tool overhead!)
  4. Two cooling channel bores for wet machining. Better surface, better chip evacuation and protection of the cutter.
  5. Guaranteed dimensional accuracy when the eccentric bush is used. (Idle stroke at the end of the cut!)
  6. Lower cutting forces due to the highly positive cutter geometry. (From slot width 16 mm, cut the slot in two passes (1/2 slot width)!)
  7. Avoidance of scores on the return stroke. The least possible bore ⌀ (the holder must suit the slot width). (During the return stroke in X-axis lift the cutter completely out of the slot!)
  8. Reduction of vibration due to full length support. (Clamp on the shortest mounting!)

Have a closer look at GARANT broaching now!

GARANT broaching means more productivity in turning. The range extends from stable tool designs to a wide range of products and special solutions on short lead times.

Small measures with a big impact: This video will show you tips and tricks relating to the subject of broaching and how you can achieve the highest precision with low set-up and tooling costs.

Create precise profiles with profile slotting

Machining precise profiles

The GARANT range of products for profile slotting on lathes or machining centres provides you with productive and reliable tools. Depending on the application, these tools will ensure economical production of profiles.

In the case of profile slotting, the desired profiles (hexagonal, square or special profiles) are machined by means of a holder and cutting insert making several working strokes to remove the material.

Profile slotting is therefore mainly used for profiles in components with larger diameters (e.g. square 50 mm and hexagon 70 mm) or in high-tensile materials.

1. Precise profiles - also for high-tensile material.
2. Procedure for squares: Four 90° steps.

Profile broaching, on the other hand, is mainly used for profiles in components with smaller diameters (from diameter 1.5 mm). With the new GARANT profile broaching tools, you can produce hexagonal, square and Torx® profiles in seconds.
Here you can find out more about GARANT profile broaching

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