Screwer test bench comprising a braking device for resisting torque simulation

• US 20030057034A1
• Filed: 09/23/2002
• Published: 03/27/2003
• Est. Priority Date: 09/25/2001
• Status: Active Grant

• Current Assignee: Atlas Copco Industrial Technique Ab (Atlas Copco AB)
• Original Assignee: BLM SAS Di L Bareggi & C
• Inventors: Bareggi, Luigi, Chiapuzzi, Angelo
• Granted Patent: US 6,715,362 B2
• Time in Patent Office: Days
• US Class Current: 188/71.1
• CPC Class Codes: F16D 55/28 Brakes with only one rotating disc
• CPC Class Codes: G01L 25/003 for measuring torque

Abstract

A screwer test bench comprises a coupling (12) designed for coupling with the head of a screwer and a controlled braking unit (14). A sensor unit (15) detects mechanical magnitudes transmitted between the coupling and the braking unit. The braking unit (14) comprises a brake with carbon friction surfaces (11) in an oil bath.

Claims

1. Screwer test bench comprising a coupling designed for coupling with the head of a screwer and connected to a controlled braking unit and a sensor unit for detecting mechanical magnitudes transmitted between the coupling and the braking unit characterized in that the braking unit comprises a brake with carbon friction surfaces in an oil bath.

2. Bench in accordance with claim 1 characterized in that the carbon friction surfaces brake against steel surfaces.

3. Bench in accordance with claim 1 characterized in that the carbon friction surfaces are held at a temperature less than 250°

C and in particular less than 150°

C.

4. Bench in accordance with claim 1 characterized in that the brake comprises at least one cap connected to the coupling and at least one braking disk supporting the carbon friction surfaces and which is thrust on command against said cap by an actuator.

5. Bench in accordance with claim 4 characterized in that the braking disk runs in an axial guide collar.