Gauge and method for measuring short external cone

Abstract

The invention discloses a gauge for measuring a short external cone, which comprises a taper ring gauge (3), and is characterized by further comprising a verticality ensuring device consisting of a positioning sleeve (1), a central spindle (2) and a compression screw (5); in a using process, the central spindle (2) is arranged in an inner hole (D) of the positioning sleeve (1); the taper ring gauge (3) is connected with the central spindle (2) in a manner that a measuring face (E) faces upwards; an inner cone (3-1) of the taper ring gauge (3) is placed on a transition shaft (2-1) of the central spindle (2), and contains a positioning shaft (2-2); and a connecting part (5-2) of the compression screw (5) is connected with a threaded hole (2-3) in the transition shaft (2-1), so that a compaction part (5-1) compacts a part (6) placed between the compaction part (5-1) and the measuring face (E) of the taper ring gauge (3). The gauge has the benefits that the gauge is accurate in measurement and ensures the quality.

Description

technical field [0001] The invention relates to a machining measuring tool, in particular to a gauge and a method for measuring a short outer cone. Background technique [0002] In some special mechanical products, a large number of friction spring parts with a short outer conical structure with a length of less than 3mm and a diameter of the large end greater than 15mm are widely used, and their shock absorption effect in a small space is better than that of a coil spring. However, because the friction spring is a thin-walled ring, it has many components, small parts, and high requirements for the consistency of the size of each part. It is difficult to manufacture and detect, especially the taper of the friction spring parts and multiple friction spring parts. The combination height is an important factor affecting the spring force of the friction spring, and a reasonable design of the taper measuring tool is a necessary means to control the quality of the parts. However,...

AI Technical Summary

Problems solved by technology

However, there is no reasonable structure in the technical field of measuring short outer cones. When measuring with a three-coordinate machine, due to the short length of the cone, the measurement accuracy of the small end diameter is not high, and the taper measurement is more difficult.

Due to the inaccurate measurement of the original end face diameter, the height error is relatively large after multiple parts are assembled each time, and it takes a long time to select and assemble to achieve the required height; at the same time, the taper measurement is inaccurate, and the taper of each batch of parts is inconsistent, resulting in multiple parts. After the matching height of each part is qualified, the force of the friction spring after being compressed to the same height is unqualified, so the original qualified rate of the part is only 25% to 30%.

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