阅读说明：本技术 一种工件孔深合格直观检测工具 (Qualified visual detection instrument of work piece hole depth ) 是由 吴国平 朱凯 孙增勇 于 2020-05-20 设计创作，主要内容包括：本发明公开了一种工件孔深是否在允许公差内的直观检测工具,包括一体呈筒状的工具本体,其包括内孔伸入部、公差部、限位部、外露部和移动杆；伸入部、公差部和外露尾部依次同心轴连接,限位部为环形片,其套接于公差部和外露部的连接处；外露部与公差部连接的一部分为实心部分,另一部分为空心部分；伸入部、公差部和外露部的实心部分分别沿着中心轴设有通孔,移动杆穿入通孔中,其两端分别露在伸入部外端和实心部分外端；外露部的空心部分的末端设有连接杆,连接杆和移动杆,其相对的面上均设有导电金属片；空心部分的外部设有LED灯,LED灯的电路连通由金属片控制。本发明,将其伸入内孔中,可以直观判断其是否到底,也可以直观的观察内孔的长度是否公差允许范围内。因此,仅需将其插入孔中,目测即可完成其是否为合格值,无法繁复的读数,提高了检测效率。(The invention discloses a visual detection tool for detecting whether the hole depth of a workpiece is within an allowable tolerance, which comprises an integrally cylindrical tool body, a limiting part, a movable rod and a tool body, wherein the tool body comprises an inner hole extending part, a tolerance part, a limiting part, an exposed part and a movable rod; the extending part, the tolerance part and the exposed tail part are connected in sequence concentrically, and the limiting part is an annular sheet and is sleeved at the joint of the tolerance part and the exposed part; one part of the exposed part connected with the tolerance part is a solid part, and the other part is a hollow part; the solid parts of the stretching part, the tolerance part and the exposed part are respectively provided with a through hole along a central shaft, the movable rod penetrates into the through hole, and two ends of the movable rod are respectively exposed at the outer end of the stretching part and the outer end of the solid part; the tail end of the hollow part of the exposed part is provided with a connecting rod, the connecting rod and the movable rod, and the opposite surfaces of the connecting rod and the movable rod are provided with conductive metal sheets; the outside of hollow portion is equipped with the LED lamp, and the circuit intercommunication of LED lamp is controlled by the sheetmetal. The invention can visually judge whether the inner hole reaches the bottom or not by stretching the inner hole into the inner hole, and can also visually observe whether the length of the inner hole is within the tolerance allowable range or not. Therefore, whether the detection value is qualified or not can be finished only by inserting the detection device into the hole and carrying out visual inspection, complex reading cannot be carried out, and the detection efficiency is improved.)

1. The utility model provides a qualified visual inspection instrument of work piece hole depth which characterized in that: comprises an integrated cylindrical tool body which comprises an inner hole extending part (1), a tolerance part (2), a limiting part (3), an exposed part (4) and a movable rod (5); the stretching-in part (1), the tolerance part (2) and the exposed tail part (4) are connected in sequence concentrically, and the limiting part (3) is an annular sheet and is sleeved at the joint of the tolerance part (2) and the exposed part (4); one part of the exposed part (4) connected with the tolerance part (2) is a solid part, and the other part is a hollow part; the solid parts of the stretching part (1), the tolerance part (2) and the exposed part (4) are respectively provided with a through hole along a central shaft, the movable rod (5) penetrates into the through hole, and two ends of the movable rod are respectively exposed at the outer end of the stretching part (1) and the outer end of the solid part; the tail end of the hollow part of the exposed part (4) is provided with a connecting rod (8), and the opposite surfaces of the connecting rod (8) and the movable rod (5) are respectively provided with a conductive metal sheet (7); an LED lamp (6) is arranged outside the hollow part, and the circuit connection of the LED lamp (6) is controlled to be disconnected or connected by the conductive metal sheet (7); the length of the inner hole extending part (1) is the minimum value of the qualified value; the length of the tolerance part (2) is the sum of absolute values of positive tolerance and negative tolerance; the extension part (2) is red in color, and the tolerance part (2) is black in color.

2. The workpiece hole depth qualified visual inspection tool according to claim 1, characterized in that: the moving rod (5) is a steel rod, and lubricating oil is smeared on the outer wall of the moving rod and the inner wall of the through hole.

3. The workpiece hole depth qualified visual inspection tool according to claim 1, characterized in that: the sum of the lengths of the movable rod (5) and the connecting rod is equal to the sum of the lengths of the extending part (1), the tolerance part (2) and the exposed part (4).

4. The workpiece hole depth qualified visual inspection tool according to claim 1, characterized in that: the circuit of the LED lamp comprises the LED lamp, an electric wire and a switch, wherein the switch is a metal sheet.

Technical Field

The invention relates to a visual detection tool for qualified hole depth of a workpiece, and belongs to the technical field of mechanical measurement.

Background

In the prior art, the measurement of the hole depth is complicated. And (5) extending the measuring scale into the hole, reading out the reading, and judging whether the measuring scale is qualified. However, such operations have many problems, i.e. it cannot be determined whether the measuring tape is completely attached to the bottom of the hole, and if not, the measured value has a large error; and secondly, after reading, the reading is judged with a standard value, and the labor is consumed. Therefore, a visual tool for detecting the qualified depth of the workpiece hole is needed.

Disclosure of Invention

In order to solve the technical problem, the invention discloses a visual detection tool for qualified hole depth of a workpiece, which adopts the specific technical scheme that: the tool comprises an integrated cylindrical tool body, a positioning device and a control device, wherein the tool body comprises an inner hole extending part, a tolerance part, a limiting part, an exposed part and a movable rod; the extending part, the tolerance part and the exposed tail part are connected in sequence concentrically, and the limiting part is an annular sheet and is sleeved at the joint of the tolerance part and the exposed part; one part of the exposed part connected with the tolerance part is a solid part, and the other part is a hollow part; the solid parts of the stretching part, the tolerance part and the exposed part are respectively provided with a through hole along a central shaft, the movable rod penetrates into the through hole, and two ends of the movable rod are respectively exposed at the outer end of the stretching part and the outer end of the solid part; the tail end of the hollow part of the exposed part is provided with a connecting rod, the connecting rod and the movable rod, and the opposite surfaces of the connecting rod and the movable rod are provided with conductive metal sheets; the outside of hollow portion is equipped with the LED lamp, and the circuit intercommunication of LED lamp is controlled by the sheetmetal.

Further, the length of the inner hole extending part is the minimum value of the qualified value.

Further, the length of the tolerance portion is the sum of the absolute values of the positive tolerance and the negative tolerance.

Further, the extension portion is red in color and the tolerance portion is black in color.

Furthermore, the movable rod is a steel rod, and lubricating oil is smeared on the outer wall of the movable rod and the inner wall of the through hole.

Further, the sum of the lengths of the moving rod and the connecting rod is equal to the sum of the lengths of the extending part, the tolerance part and the exposed part.

Furthermore, the circuit of the LED lamp comprises the LED lamp, an electric wire and a switch, and the switch is a metal sheet.

The invention has the beneficial effects that: the invention can visually judge whether the inner hole reaches the bottom or not by stretching the inner hole into the inner hole, and can also visually observe whether the length of the inner hole is within the tolerance allowable range or not. Therefore, whether the detection value is qualified or not can be finished only by inserting the detection device into the hole and carrying out visual inspection, complex reading cannot be carried out, and the detection efficiency is improved.

Drawings

Figure 1 is a schematic view of the structure of the present invention,

reference numerals: 1-inner hole extending part, 2-tolerance part, 3-limiting part, 4-exposed part, 5-moving rod, 6-LED lamp, 7-metal sheet, 8-connecting rod and 9-connecting cable.

Detailed Description

The present invention is further illustrated by the following figures and specific examples, which are to be understood as illustrative only and not as limiting the scope of the invention, which is to be given the full breadth of the appended claims and any and all equivalent modifications thereof which may occur to those skilled in the art upon reading the present specification.

As shown in FIG. 1, the present invention comprises a coaxial and interconnected bore penetration portion 1, tolerance portion 2 and exposed portion 4. The diameters of the inner hole extending part 1 and the exposed part 4 are equal, and the diameter of the tolerance part 2 is smaller than that of the extending part 1. The limiting part 3 is a ring piece which is connected on the exposed part 4 in a threaded manner and is close to the tolerance part 2. The length of the inner hole extending part 1 is set as the minimum value of the qualified value of the workpiece; the length of the tolerance portion 2 is the sum of the absolute values of the positive and negative tolerance values. The exposed portion 4 comprises two parts, one being a solid part and the other being a hollow part. The right end of the hollow part is provided with a connecting rod 8 along the central axis as shown in the figure. The travel bar 5 extends into the bore entrance 1, the tolerance section 2 and the solid portion. The sum of the lengths of the connecting rod 8 and the moving rod 5 is the sum of the lengths of the extending part 1, the tolerance part 2 and the exposed part 4. The moving rod 5 can move back and forth among the extending part 1, the tolerance part 2 and the exposed part 4, and lubricating oil is dropped to reduce friction force. In order to prevent the displacement rod 5 from being completely drawn out of it, the displacement rod of the hollow part is provided with a protruding snap projection.

The side wall of the hollow part is provided with an LED lamp, a connecting cable 9 of the LED lamp is respectively connected with the opposite end faces of the connecting rod 8 and the moving rod 5, and each end face is provided with a conductive metal sheet.

The embodiment of the invention is as follows: the vertical mode of hole will stretch into the portion and insert in the hole, and when this instrument reachd the hole bottom, the carriage release lever was jack-up, flushed until the carriage release lever with the left end that stretches into the portion, at this moment, carriage release lever and connecting rod butt joint, two sheetmetals laminating, the LED lamp lights, then represents this measuring tool and has reachd the bottom of hole.

When the tail end of the hole is positioned at the extending part and the red color of the extending part still leaks at the outer end, the hole depth is smaller than the minimum value of the standard value, and the hole is unqualified; when the tail end of the hole is positioned in the tolerance part, the hole depth of the workpiece is within the tolerance range and is qualified. When the tail end of the hole abuts against the limiting part 3 and the LED is lightened, the hole depth is just the maximum value of the standard values, and the hole is qualified. When the tail end of the hole abuts against the limiting part 3 but the LED lamp is not lighted, the depth of the hole exceeds the maximum value of the standard value, and the hole is unqualified.

The invention can visually judge whether the inner hole reaches the bottom or not by stretching the inner hole into the inner hole, and can also visually observe whether the length of the inner hole is within the tolerance range. Therefore, the detection device can be inserted into the hole to visually check whether the detection device is qualified or not, so that complicated reading is not possible, and the detection efficiency is improved.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only one independent technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.