Bearing unit used for copper pipe circle checking and applied copper pipe circle checking device thereof

Abstract

A bearing unit used for copper pipe circle checking comprises an outer ring, an inner ring, and rolling balls disposed between the outer ring and the inner ring, and is characterized in that a circle checking groove is circumferentially disposed on the outer surface of the outer ring and matches the arc of the outer surface of the copper pipe. A copper pipe circle checking device is characterized in that the device comprises at least two bearing units for copper pipe circle checking which are horizontally and / or vertically symmetrically mounted; the circle checking grooves of the two bearing units face each other and together form a circle checking hole circumferentially matching the outer surface of the copper pipe. The bearing unit used for copper pipe circle checking and the circle checking device of the invention are convenient for mounting and using, can effectively reduce accumulative error, improve running precision, and thus improve copper pipe circle checking precision.

Description

Technical field: [0001] The invention relates to a bearing unit used for rounding copper tubes and a copper tube rounding device applied thereto, in particular to a bearing unit used for rounding thin-walled copper tubes and a copper tube rounding device applied thereto. Background technique: [0002] Copper tubes are an important original component of refrigeration devices. The copper tubes in radiators are called the "blood vessels" of air conditioners in the industry. Their quality and precision directly affect the cooling effect and determine the quality and level of air conditioners. The copper tube of the air conditioner heat exchanger is composed of many U-shaped tubes. Before the U-shaped tubes are bent into shape, a special mold is needed to round and straighten the coiled round tubes and transform them into long tubes that meet the requirements. [0003] And the existing school circle wheel, such as figure 1 As shown, it is an assembly composed of a circle correct...

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