CN206019542U - A kind of depth of center hole cubing - Google Patents

Abstract

The utility model discloses a central hole depth measuring tool, which comprises a measuring tool body and a proofreading block. A measuring rod is installed in the measuring tool body, the upper end of the measuring rod is connected with a measuring needle, and the measuring needle is connected with a dial indicator. connected, and the lower end of the measuring rod is connected with the measuring steel ball. The central hole depth measuring tool described in the utility model has a simple structure, is convenient to operate, and can effectively improve the detection accuracy, thus ensuring the processing accuracy of the detection parts.

Description

A center hole depth gauge

technical field

The utility model relates to a center hole depth inspection tool.

Background technique

In processing technology, all machining of shaft parts is based on the center hole, so the accuracy of the depth dimension of the center hole directly affects the machining accuracy of shaft parts. Therefore, with the continuous development of science and technology, the precision requirements for mechanical parts are gradually increasing. improve. However, the existing central hole depth detection instrument has problems such as complicated operation and low detection accuracy.

Utility model content

The purpose of the utility model is to provide a central hole depth gauge, which has a simple structure, is convenient to operate, and can effectively improve the detection accuracy, thereby ensuring the processing accuracy of the detection parts.

In order to achieve the above object, the technical scheme of the utility model is:

A center hole depth gauge, including a gauge body and a calibration block, a measuring rod is installed in the gauge body, the upper end of the measuring rod is connected to a measuring needle, the measuring needle is connected to a dial indicator, and the measuring rod is connected to a dial gauge. The lower end of the rod is connected with the measuring steel ball.

The measuring rod includes a first measuring connecting rod and a second measuring connecting rod. The first measuring connecting rod is connected with the second measuring connecting rod. The connecting rod is connected with the measuring steel ball; the outer casing of the first measuring connecting rod is connected with a compression spring.

A locking screw is installed in the inspection tool body, and a limiting groove for the locking screw to slide up and down is provided on the second measuring connecting rod.

The connecting rod diameter of the second measuring connecting rod is larger than the connecting rod diameter of the first measuring connecting rod.

The body of the inspection tool is connected with the dial indicator through a locking sleeve.

A detection groove is opened on the proofreading block.

The beneficial effects of the utility model are: a central hole depth measuring tool, which has a simple structure, is convenient to operate, effectively improves the detection accuracy, thereby ensuring the processing accuracy of the detection parts.

Description of drawings

Fig. 1 is the structural representation of the utility model.

detailed description

Example 1

As shown in Figure 1, a central hole depth gauge includes a gauge body 1 and a proofreading block 2. A measuring rod 3 is installed in the gauge body 1, and the upper end of the measuring rod 3 is connected with a measuring needle 4. The measuring needle 4 is connected with the dial gauge 5, and the lower end of the measuring rod 3 is connected with the measuring steel ball 6.

The measuring rod 3 includes a first measuring connecting rod 7 and a second measuring connecting rod 8, the first measuring connecting rod 7 is connected to the second measuring connecting rod 8, and the first measuring connecting rod 7 interferes with the measuring needle 4 The second measuring connecting rod 8 is connected to the measuring steel ball 6; the first measuring connecting rod 7 is sleeved with a compression spring 9.

A locking screw 10 is installed in the inspection tool body 1 , and a limiting groove 11 for the locking screw 10 to slide up and down is provided on the second measuring link 8 . The setting of the locking screw 10 can fix the relative position of the inspection tool body 1 and the second measuring connecting rod 8 .

The connecting rod diameter of the second measuring connecting rod 8 is larger than the connecting rod diameter of the first measuring connecting rod 7 .

The inspection tool body 1 is connected with the dial indicator 5 through a locking sleeve 12 . The setting of the locking sleeve 12 can improve the connection strength between the inspection tool body 1 and the dial indicator 5 .

The proofreading block 2 is provided with a detection groove 13 . The setting of the detection groove 13 is convenient to ensure that the measuring steel ball 6 receives the same pressure of the calibration block during each calibration.

When testing the central hole depth gauge described in this embodiment, firstly, the measuring steel ball 6 is calibrated by the calibration block 2, so that the dial indicator 5 is reset to zero. Then by measuring the steel ball 6 to detect the depth of the center hole of the part, the pressure of the detected part is sensed by the steel ball 6 and transmitted to the stylus 4 through the measuring rod 3, and the depth of the center hole is displayed on the dial indicator 5 through the stylus 4.

The central hole depth measuring tool of this embodiment has a simple structure, is easy to operate, and can effectively improve the detection accuracy, thereby ensuring the processing accuracy of the detection parts.

Claims (6)

1. a kind of depth of center hole cubing, it is characterised in that：Including cubing body（1）, proof-reading block（2）, the cubing body（1） Measurement bar is inside installed（3）, the measurement bar（3）Upper end and chaining pin（4）It is connected, the chaining pin（4）With dial gauge（5）It is connected, The measurement bar（3）Lower end and measurement steel ball（6）It is connected.

2. a kind of depth of center hole cubing according to claim 1, it is characterised in that：The measurement bar（3）Including first Measurement connecting rod（7）, second measurement connecting rod（8）, the first measurement connecting rod（7）With the second measurement connecting rod（8）It is connected, described first Measurement connecting rod（7）With chaining pin（4）Contradict and be connected, the second measurement connecting rod（8）With measurement steel ball（6）It is connected；Described first surveys Amount connecting rod（7）Stage clip is socketed with outward（9）.

3. a kind of depth of center hole cubing according to claim 2, it is characterised in that：The cubing body（1）Interior installation There is lock-screw（10）, the second measurement connecting rod（8）On offer lock-screw（10）The limited impression for sliding up and down（11）.

4. a kind of depth of center hole cubing according to claim 2, it is characterised in that：The second measurement connecting rod（8）'s Connecting rod is with diameter greater than the first measurement connecting rod（7）Connecting rod diameter.

5. a kind of depth of center hole cubing according to claim 1, it is characterised in that：The cubing body（1）By lock Tight set（12）With dial gauge（5）It is connected.

6. a kind of depth of center hole cubing according to claim 1, it is characterised in that：The proof-reading block（2）On offer Detection groove（13）.