• A collage of different tools for machining brake calipers for vehicles.

Étrier de frein

L'étrier de frein est un composant important pour la sécurité du véhicule, soumis à de fortes contraintes thermiques et mécaniques. Lorsque la pédale de frein est actionnée, le liquide de frein est envoyé vers le piston de l'étrier, qui presse les plaquettes de frein contre le disque. Les formes de construction et le nombre de pistons varient en fonction du type de véhicule et de la motorisation.
Brake caliper made of aluminium with labeling

Caratteristiche principali in alluminio

  1. Collegamento della pinza freno
  2. BSuperficie delle pastiglie del freno
  3. Foro del pistone
  4. Scanalatura di tenuta e del cappuccio di protezione
  5. Fori dell’olio

特性和加工要求

使用固定铝制制动钳可减轻重量。它们 非常适合需要快速制动响应的性能强大 车辆和重型车型。

  • 安全相关部件
  • 高质量要求
  • 大批量

  • 高切除率取决于铸造情况
  • 由于批量生产的工艺流程和机床能力， 公差范围狭窄
  • 高工艺可靠性和尺寸精度
  • 多轴加工或专用机床
  • 铸铁：更高的切削加工力

1. Collegamento della pinza freno

Drilling tool with chuck

Fresa a forare in PCD
  • Lavorazione di preparazione e di finitura su un unico utensile
  • Fresatura circolare inversa dello smusso

2. Superficie delle pastiglie del freno

A disc cutter for machining the brake caliper

PDC circular milling tool

  • High number of teeth for low cutting force
  • Burr-free milling due to perfect cutting-edge preparation

3. Piston bore

Drilling tool for machining a brake caliper

PCD boring tool

  • Fine machining of close diameter tolerances

4. Seal and protection cap groove

PCD circular milling tool for machining sealing and protective cap grooves

PCD圆盘铣削刀具
  • 激光加工的切削刃确保很高的形状和 尺寸精度

5. Oil bores

Solid carbide drill bits for oil hole drilling

Solid Carbide Deep Drill

  • Process-reliable chip removal for bore depths 20xD
  • High cutting data due to optimal choice of coating

Brake caliper made of cast iron with labeling

Key Features Cast Iron

  1. Flange surface (contact surface)
  2. Main bore
  3. Seal and protection cap groove
  4. U-face

Features and Machining Requirements

Cast iron is frequently used in mass production as it is inexpensive and can be used irrespective of the machine concept.

  • Safety-relevant component
  • High demand on quality
  • High quantities

  • High chip volume depending on casting situation
  • Tight tolerance fields due to process and machine capability in series production
  • High process reliability and dimensional accuracy
  • Multi-spindle machining or custom machine
  • Higher machining forces

1. Flange surface (contact surface)

Tools for drilling and milling

ISO bore milling combination

  • Reduced cycle times due to machining of two features with one tool
  • Cost-effective circular milling of the flange surface in one cut with SPGN indexable inserts
  • Drilling of the connection bore with coated solid carbide drill or high cutting data with high tool life

2. Furo principal

High performance reamer

HPR400 escareadores de alto desempenho
  • Arestas de corte intercambiáveis para a usinagemde acabamento do furo principal
  • Cabeça intercambiável HPR frontal para facilitar a troca de ferramentas em caso de desgaste
  • Máxima produtividade com baixos custos de ferramentas
  • Não é necessário ajustar as arestas de corte

3. Seal and protection cap groove

Circular milling tool

ISO circular milling tool

  • Tangential technology
  • Machining delicate radial grooves with tight tolerance requirements
  • Maximum radial run-out accuracy of the cutting edges for optimal milling output
  • Process reliability in machining thanks to indexable inserts with tangential technology

4. U-face

Boring tool with indexable inserts

Drilling tool with indexable insert

  • Face-side pre-machining of the main bore
  • Control cut of U-surface
  • Cost-effective machining of two features with one tool