A narrow slot diameter measuring device

Abstract

The utility model provides a kind of narrow groove diameter measuring device, including bottom plate, the left end of the upside of bottom plate is provided with left support, right end is provided with right support, the upper end of right support is provided with groove positioning column, the back of right support is provided with measuring mechanism, measuring mechanism includes height and angle adjustable measuring table, the measuring head of measuring table corresponds with groove positioning column, calibration block is placed on right support, calibration block is used for measuring table zero adjustment.

Description

Technical Field

[0001] This utility model relates to the field of diameter measurement technology, and in particular to a device for measuring the diameter of a narrow groove. Background Technology

[0002] In existing technologies, the diameter of narrow grooves on workpieces is usually measured using a small-end outside micrometer. The measurement process requires repeated adjustments to the position of the measuring head of the small-end outside micrometer in contact with the product to find the largest quadrant circle of the groove on the workpiece before the measurement value can be obtained. This results in problems such as low measurement accuracy and low measurement efficiency. Utility Model Content

[0003] This invention proposes a device for measuring the diameter of narrow grooves, which solves the problems of low accuracy and low efficiency in measuring the diameter of narrow grooves.

[0004] The technical solution of this utility model is implemented as follows: A narrow groove diameter measuring device includes a base plate, a left support is provided at the left end of the upper side of the base plate, a right support is provided at the right end, a groove positioning column is provided at the upper end of the right support, and a measuring mechanism is provided at the rear side of the right support. The measuring mechanism includes a measuring meter with adjustable height and angle. The measuring head of the measuring meter corresponds to the groove positioning column. A calibration block is placed on the right support. The calibration block is used to zero the measuring meter.

[0005] Furthermore, the measuring mechanism also includes a column and a support rod. The column is fixed to the base plate on the rear side of the right support. The column has first connecting holes spaced at intervals along the vertical direction, and the support rod has second connecting holes spaced at intervals along the length direction. The first connecting holes and the second connecting holes are connected by a first locking screw. The measuring instrument is mounted on the support rod.

[0006] Furthermore, a third connecting hole is provided at the end of the support rod away from the column, and the third connecting hole is connected to the measuring instrument through a second locking screw.

[0007] Furthermore, the upper end of the trench positioning post is an isosceles trapezoidal end.

[0008] Furthermore, support feet are provided at the four corners of the bottom of the base plate, and the upper ends of the support feet are connected to the base plate by threads for leveling the base plate.

[0009] The beneficial effects of this utility model are:

[0010] This invention uses a groove positioning post to position the groove, so that when the groove rolls and moves, its top abuts against the measuring head of the measuring instrument, avoiding deviation. By calibrating the measuring instrument with a calibration block, the outer diameter of the narrow groove can be quickly obtained by adding the value displayed on the measuring instrument to the size of the standard block. The measurement results are accurate and the measurement efficiency is high.

[0011] This invention allows for the adjustment of the position and angle of the measuring instrument by adjusting the installation position and angle of the support rod on the column, enabling the measurement of narrow grooves on workpieces of different diameters. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is the front view of the present invention;

[0014] Figure 2 for Figure 1 The left view;

[0015] Figure 3 This is a schematic diagram of the calibration block.

[0016] Base plate 1, support foot 2, left support 3, right support 4, groove positioning post 5, column 6, support rod 7, measuring gauge 8, first connecting hole 9, second connecting hole 10, first locking screw 11, third connecting hole 12, second locking screw 13, calibration block 14, workpiece 15. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In this utility model, the terms "left" and "right" are relative to... Figure 1 The positional relationship is shown.

[0019] like Figure 1-3 As shown, a narrow groove diameter measuring device includes a base plate 1, with support feet 2 fixed at the four corners of the lower end of the base plate 1. The upper ends of the support feet 2 are connected to the base plate 1 by threads. The flatness of the base plate 1 can be adjusted to be less than or equal to 0.01 mm by adjusting the length of the support feet 2 screwed into the base plate 1.

[0020] A left support 3 is fixed to the left end of the upper side of the base plate 1, and a right support 4 is fixed to the right end. A groove positioning post 5 is provided at the upper end of the right support 4. The groove positioning post 5 and the right support 4 are an integral structure, and the upper end of the groove positioning post 5 is an isosceles trapezoidal end. The groove of the workpiece 15 is placed on the groove positioning post 5. The isosceles trapezoidal end is suitable for grooves of different widths. The contact surfaces between the upper ends of the left support 3 and the right support 4 and the workpiece 15 are precision ground to ensure that the parallelism with their lower mounting surfaces is ≤0.008mm.

[0021] A measuring mechanism is provided on the rear side of the right support 4. The measuring mechanism includes a column 6, a support rod 7, and a measuring gauge 8. The measuring gauge 8 is an inner diameter dial indicator. The column 6 is fixed on the base plate 1 on the rear side of the right support 4. Eight first connecting holes 9 are arranged vertically at intervals on the column 6. Four second connecting holes 10 are arranged at intervals along the length direction on the support rod 7. The first connecting holes 9 and the second connecting holes 10 are connected by a first locking screw 11. A third connecting hole 12 is provided at the end of the support rod 7 away from the column 6. The third connecting hole 12 is connected to the measuring gauge 8 by a second locking screw 13.

[0022] Depending on the diameter of the narrow groove of different workpieces 15, adjust the first connecting hole 9 and the second connecting hole 10 and the tilt angle of the support rod 7, and then tighten the first locking screw 11 to complete the installation position and installation angle adjustment of the support rod 7 on the upright; adjust the tilt angle of the measuring gauge 8, and then tighten the second locking screw 13, deform the third connecting hole 12, and lock the measuring gauge 8. Through the above adjustments, the position and angle of the measuring gauge 8 can be adjusted.

[0023] The measuring head of the measuring instrument 8 corresponds to the groove positioning post 5. The lower end of the groove of the workpiece 15 is placed on the groove positioning post 5, and the upper end abuts against the measuring head. A calibration block 14 is placed on the right support 4. The lower end of the calibration block 14 is placed on the groove positioning post 5, and the upper end of the calibration block 14 abuts against the measuring head. The calibration block 14 is used to zero the measuring instrument 8. The surface of the calibration block 14 is precision ground to ensure that the parallelism with the support surface of the right support 4 is ≤0.005mm.

[0024] The method of using the narrow groove diameter measuring device includes the following steps:

[0025] (1) Adjust the installation position and angle of the support rod 7 on the column 6 according to the size of the narrow groove of different workpieces 15, and the position and angle of the measuring instrument 8 on the bracket;

[0026] (2) Place the calibration block 14 on the right support 4, adjust the vertical position of the measuring instrument 8 so that the meter head of the measuring instrument 8 is in contact with the surface of the calibration block 14, and then zero the measuring instrument 8.

[0027] (3) Remove the calibration block 14, place the workpiece 15 on the left support 3 and the right support 4, place the groove of the workpiece 15 on the groove positioning column 5, move the workpiece 15 horizontally, and during the movement, the workpiece 15 rolls synchronously, so that the workpiece 15 contacts the head of the measuring table 8. At this time, the value displayed by the measuring table 8 plus the size of the standard block is the outer diameter of the narrow groove.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for measuring the diameter of a narrow groove, comprising a base plate, characterized in that: A left support is provided on the left side of the upper side of the base plate, and a right support is provided on the right side. A groove positioning post is provided on the upper end of the right support, and a measuring mechanism is provided on the rear side of the right support. The measuring mechanism includes a measuring instrument with adjustable position and angle. The measuring head of the measuring instrument corresponds to the groove positioning post. A calibration block is placed on the right support. The calibration block is used to zero the measuring instrument.

2. The narrow groove diameter measuring device according to claim 1, characterized in that: The measuring mechanism also includes a column and a support rod. The column is fixed to the base plate on the rear side of the right support. The column has first connecting holes spaced at intervals along the vertical direction, and the support rod has second connecting holes spaced at intervals along the length direction. The first connecting holes and the second connecting holes are connected by a first locking screw. The measuring instrument is mounted on the support rod.

3. The narrow groove diameter measuring device according to claim 2, characterized in that: A third connecting hole is provided at the end of the support rod away from the column, and the third connecting hole is connected to the measuring instrument through a second locking screw.

4. A narrow groove diameter measuring device according to claim 1 or 2, characterized in that: The upper end of the groove positioning post is an isosceles trapezoid.

5. The narrow groove diameter measuring device according to claim 1, characterized in that: Support feet are provided at the four corners of the bottom of the base plate, and the upper ends of the support feet are connected to the base plate by threads.

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