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Home » Blogs » How surface broaching works? The benefits of surface broaching – AXISCO

2020-12-18

How surface broaching works? The benefits of surface broaching – AXISCO

Blogs

Table of Contents

  • What is surface broaching?
  • Types of surface broaching tools
    • Piston broach
    • Rack broach
    • Combination broach
  • How does surface broaching work?
  • Advantages of surface broaching
    • Cycle time is short
    • Output is high
    • Precision is high
    • Operator requirement is low
    • Per-piece cost is low
  • Surface Broaching Examples

What is surface broaching?

Surface broaching, also known as external broaching, refers to cutting single grooves, multiple grooves, or special shapes on an object’s surface or edge.

When a groove is in the hole, it is a keyway, as shown in the left picture; when it is at the workpiece’s surface, it is a tooth that can be processed by milling or broaching in the right picture.

Types of surface broaching tools

Here are three kinds of most commonly used surface broaching tools.

Piston broach

The piston broach cuts all teeth on the piston at the same time. The cycle time is fast, the size is well-maintained, and the surface finish is good.

Rack broach

All the teeth are cut at once. The angle of teeth is achieved by fixture design. Axisco takes care of the machine, fixture, and rack broach at the same time to ensure the best and stable quality.

Combination broach

Several surface broaching tools are combined in a seat. It is used for cutting several surfaces at the same time.

Learn more about AXISCO spline broaching tool: Broach cutting tool & Spline broaching tool

How does surface broaching work?

  • The motion is linear, and the rise of teeth sizes does the cutting feed. The rough and fine cutting can be done in one surface broaching.
  • The cutting force is single-sided. It requires a hydraulic fixture to clamp the workpiece. (While in internal broaching, the cutting force comes all around, so no need for clamping.)

Advantages of surface broaching

Time, output, stability, and low skill requirement are significant benefits when using surface broaching to replace the milling process. All these benefits result in a low per-piece cost.

Cycle time is short

Consider those parts which are suitable for surface broaching. If the milling process takes 3 to 4 minutes, the surface broaching takes only about 30 seconds to make the same part. That means you can produce one piece in one-fifth of the original time.

Output is high

Due to the short processing time and the large output per broaching machine, you don’t need to have a lot of workforce and equipment to achieve the same production capacity. That’s why the application of surface broaching is mostly in mass production.y

Precision is high

Roughing and finishing can be done at once, without the need to complete roughing and finishing several times like a milling machine. The surface broaching machine can be processed directly from the rough surface. The size and surface finish after broaching is similar to fine milling.

Operator requirement is low

The custom-designed broaching tool and fixture are on the broaching machine. The operator does not need to do programming or tool calibration before machining. There is no operator to operator variation as well.

Per-piece cost is low

In terms of the same mass-production requirements, surface broaching requires less equipment, fewer operators, fewer skill requirements, and high stability. The overall impact makes the per piece cost of surface broaching very low. Hooray!

Surface Broaching Examples

brake caliper, door closer piston, linear guide slide, car seat angle adjustment part, nail gun, construction parts, and many applications.

More: What is broaching? Know more about broaching machines.

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    High Precision Hydraulic Surface Broaching Machine 20 ton

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  • Automobile industry

    Surface Broaching Machine Plunger broaching 3 ton

BROACHING KNOWLEDGE

Why do people choose CNC broaching and Servo Broachine Machines?

2021-06-15

The Advantages of Servo Broaching Machines and CNC Broaching Machines   What is servro and cnc broaching Servo broaching machine uses electricity as the primary …

What is spline broaching? Spline broaching v.s keyway broaching

2021-06-03

When we want to transfer rotary motion from one point to another in any device, we commonly rely on a spline connection. A spline connection …

How did Axisco help customers inspect broaching machines remotely during the pandemic?

2021-04-15

The coping strategy we did for broaching machine inspections under the COVID-19 pandemic. Source (Wikipedia 15-04-2021) After the COVID-19 virus was reported by the end …

Broaching Machines & Helical broaching: Learn about the broaching process

2020-12-03

There is very little knowledge about broaching, broaching process, broaching machines, helical broaching, and broaching applications in engineering textbooks. Even if you ask well-trained engineers …

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