CN103307952A - Measuring instrument for diameter of lever-type deep hole - Google Patents

Abstract

The invention discloses a lever type deep hole diameter measuring instrument, which comprises: a movable measuring head, an isometric lever, a long tube, a dial indicator, a handle, an elastic device and a fixed measuring head, the long tube is fixed in the handle, and the An equal-arm lever is fixed inside the long tube, and the lower end measuring head of the dial gauge passes through the handle and the long tube to conflict with the upper right end surface of the equal-arm lever, and the movable measuring head is fixed on the long tube and is in contact with the equal-arm lever. The upper left end face is in conflict, the fixed probe is fixed on the long tube and is axially symmetrical with the movable probe, the elastic device is fixed in the long tube close to the movable probe, and the two ends of the elastic device are respectively connected to the long tube The inner wall and the lower right end face of the equi-arm lever are in conflict. Through the above method, the present invention can accurately measure the diameter of the deep hole, and has the advantages of high measurement accuracy, good versatility, convenient and quick measurement, simple and practical.

Description

A lever type deep hole diameter measuring instrument

technical field

The invention relates to the field of a deep hole diameter measuring device, in particular to a lever type deep hole diameter measuring instrument.

Background technique

The measurement of deep hole diameter has always been a difficult problem in the measurement. Due to the limitation of the measurement conditions, the ordinary inner diameter gauge cannot be applied to the deep hole diameter measurement, and the special set of deep hole inner diameter gauges is a precious instrument like other precision measuring tools. It is expensive, and the measurement is inaccurate due to the rough and uneven surface of the workpiece during rough machining, which is easy to wear the probe and shorten its service life.

Contents of the invention

The technical problem mainly solved by the present invention is to provide a lever-type deep hole diameter measuring instrument, which can accurately measure the diameter of deep holes, and has the advantages of high measurement accuracy, good versatility, convenient and fast measurement, simple and practical.

In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a lever-type deep hole diameter measuring instrument, including: a movable measuring head, an equal arm lever, a long tube, a dial indicator, a handle, an elastic device and a fixed measuring instrument. The long tube is fixed in the handle, and an equi-arm lever is fixed inside the long tube. The lower end measuring head of the dial indicator passes through the handle and the long tube and conflicts with the upper right end surface of the equi-arm lever. The head is fixed on the long tube and conflicts with the upper left end surface of the equal arm lever. The fixed probe is fixed on the long tube and is axially symmetrical with the movable probe. The elastic device is fixed in the long tube close to the position of the movable probe. , the two ends of the elastic device are in conflict with the inner wall of the long tube and the lower right end face of the equi-arm lever respectively.

Preferably, the elastic device is a spring, the lower end of the long tube is provided with a fixing screw, and the upper end of the fixing screw is provided with a spring.

The beneficial effects of the present invention are: a lever type deep hole diameter measuring instrument of the present invention can accurately measure the deep hole diameter, and has the advantages of high measurement accuracy, good versatility, convenient and quick measurement, simple and practical.

Description of drawings

Fig. 1 is a schematic structural view of a preferred embodiment of a lever type deep hole diameter measuring instrument of the present invention;

The marks of each part in the accompanying drawings are as follows: 1, movable measuring head; 2, isometric lever; 3, long tube; 4, dial indicator; 5, handle; 6, elastic device; 7, fixed measuring head.

Detailed ways

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

Please refer to Fig. 1, the embodiment of the present invention comprises:

A lever-type deep hole diameter measuring instrument, comprising: a movable measuring head 1, an isometric lever 2, a long tube 3, a dial indicator 4, a handle 5, an elastic device 6 and a fixed measuring head 7, and the long tube 3 is fixed on In the handle 5, an isometric lever 2 is fixed inside the long tube 3, and the lower end measuring head of the dial indicator 4 passes through the handle 5 and the long tube 3 and conflicts with the upper right end surface of the isometric lever 2, and the movable gauge The head 1 is fixed on the long tube 3 and conflicts with the upper left end surface of the isometric lever 2. The fixed measuring head 7 is fixed on the long tube 3 and is axially symmetrical to the movable measuring head 1. The elastic device 6 is fixed near the movable measuring head. In the long tube 3 at the position of the head 1, the two ends of the elastic device 6 are in conflict with the inner wall of the long tube 3 and the lower right end surface of the equi-arm lever 2 respectively.

The elastic device 6 is a spring, the lower end of the long tube 3 is provided with a fixing screw, and the upper end of the fixing screw is equipped with a spring.

Before the measurement, use a ring gauge with a standard aperture to calibrate the dial indicator 4 and adjust its pointer to zero. Then insert the zero-adjusted measuring instrument into the hole to be measured. The reading on the dial indicator 4 is the deviation of the aperture. Within the specified dimensional tolerance range, the size is qualified, otherwise it is unqualified.

The invention discloses a lever type deep hole diameter measuring instrument, which can accurately measure the deep hole diameter and has the advantages of high measurement precision, good versatility, convenient and fast measurement, simple and practical.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, all of which are equally included in the scope of patent protection of the present invention.

Claims (2)

1. lever deep hole measuring apparatus of diameter, it is characterized in that, comprise: movable gauge head, bascule, long tube, clock gauge, handle, elastic device and fixing gauge head, described long tube is fixed in the handle, bascule is fixedly arranged in the described long tube, it is inconsistent that the lower end gauge head of described clock gauge passes the upper right end face of handle and long tube and bascule, described movable gauge head is fixed on the long tube and is inconsistent with the upper left end face of bascule, described fixedly gauge head be fixed on the long tube and with the axial symmetry of movable gauge head, described elastic device is fixed near in the long tube of activity probe location, and the two ends of described elastic device are inconsistent with the right lower end surface of the inwall of long tube and bascule respectively.

2. a kind of lever deep hole measuring apparatus of diameter according to claim 1, it is characterized in that: described elastic device is spring, and described long tube lower end is provided with gib screw, and spring is equipped with in described gib screw upper end.

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