CN212133533U

CN212133533U - Threaded hole measuring tool with depth go-no go gauge

Info

Publication number: CN212133533U
Application number: CN202021412134.1U
Authority: CN
Inventors: 梁榜鑫; 黎月媗
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2020-12-11
Anticipated expiration: 2030-07-17

Abstract

The utility model discloses a take degree of depth to lead to screw hole measuring tool of no-go gage belongs to screw hole measuring tool, solves the problem of traditional measuring tool measuring accuracy and inefficiency. This instrument includes that the screw thread leads to rule gauge head, screw thread no-go gauge head, handle and stop collar, the screw thread lead to the rule gauge head, the one end of screw thread no-go gauge head be connected with the both ends of handle respectively, stop collar movable sleeve establish at the middle part of screw thread lead to rule gauge head, just one side of stop collar is equipped with the reference surface, and the opposite side is equipped with first step face and second step face, the distance between first step face and the second step face equals the screw thread degree of depth tolerance size of corresponding screw hole, screw thread lead to rule gauge head middle part be equipped with the calibration face, the distance between calibration face and the screw thread lead to rule gauge head terminal surface equals the screw thread degree of depth and the thickness sum of stop collar of corresponding screw hole. The utility model discloses a screw hole measuring tool, the screw thread precision and the degree of depth that can the simultaneous measurement screw hole have effectively improved work efficiency.

Description

Threaded hole measuring tool with depth go-no go gauge

Technical Field

The utility model relates to a screw hole measuring tool, more specifically say, it relates to a take degree of depth to lead to screw hole measuring tool of no-go gage.

Background

In the machining process of the cylinder head, threaded holes such as M8, M10, M12 and the like are usually drilled on an air inlet and exhaust surface, a front end surface, a rear end surface, a top surface and the like, so that the subsequent assembly and use are convenient, for example: and parts such as an air inlet pipe, an exhaust pipe, a cylinder cover, a lifting lug and the like are installed. In the process of carrying out three-checking by machining, in order to accurately and quickly measure the effective depth and the thread precision of a common threaded hole and avoid the problem of batch unqualified, a simple and convenient measuring tool is needed. At present, a vernier caliper and a thread plug gauge which are used in a production field are matched to detect thread tapping depth and thread precision, the process is complicated, the accuracy rate is low, field production cannot be effectively guided in time, and quality judgment and production efficiency in a machining production process are influenced; and the result can be obtained only through multiple conversions, so that the working efficiency is low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is not enough to the above-mentioned of prior art, provides a take degree of depth to lead to no-go gage's screw hole measuring tool, can the simultaneous measurement screw hole the screw thread precision and the degree of depth, effectively improved work efficiency.

The technical scheme of the utility model is like this: the utility model provides a take screw hole measuring tool of no-go gage is led to degree of depth, includes that the screw thread leads to rule gauge head, screw thread no-go gage gauge head, handle and stop collar, the one end of screw thread lead to rule gauge head, screw thread no-go gage gauge head be connected with the both ends of handle respectively, stop collar movable sleeve establish in the middle part of screw thread lead to rule gauge head, just one side of stop collar is equipped with the reference surface, and the opposite side is equipped with first step face and second step face, the distance between first step face and the second step face equals the screw thread depth tolerance size of corresponding screw hole, screw thread lead to rule gauge head middle part be equipped with the calibration face, the distance between calibration face and the screw thread lead to rule gauge head terminal surface equals the screw thread depth of corresponding screw hole and the.

As a further improvement, the thread go gauge measuring head and the thread no-go gauge measuring head are inserted into the handle, and the thread go gauge measuring head, the thread no-go gauge measuring head and the handle are in interference fit.

Furthermore, the outer walls of the handle and the limiting sleeve are all processed with patterns.

Furthermore, a chamfer surface is formed on the thread gauge measuring head on one side of the calibration surface.

Furthermore, the periphery of the limiting sleeve is screwed with a fixing screw.

Furthermore, a sinking groove is formed in the middle of the measuring head of the thread go gauge, and the fixing screw is inserted in the sinking groove.

Advantageous effects

Compared with the prior art, the utility model, have following advantage:

the utility model discloses a screw hole measuring tool, through set up screw thread lead to rule gauge head and screw thread no-go gage gauge head respectively at handle both ends, behind the screw thread lead to rule gauge head screw in screw hole, utilize two step faces of stop collar to compare with the calibration face, and judge whether the screw thread degree of depth is qualified, utilize screw thread no-go gage gauge head screw in screw hole to judge whether cross the no-go gage to reach the purpose of the screw thread precision and the degree of depth of simultaneous measurement screw hole, when guaranteeing measurement accuracy, effectively improved work efficiency.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a measuring head of the middle screw gauge of the present invention;

FIG. 3 is a schematic structural view of the middle stop collar of the present invention;

fig. 4 is an enlarged schematic view of a local structure connected by the stop collar of the present invention.

Wherein: 1-a thread go gauge measuring head, 2-a thread no-go gauge measuring head, 3-a handle, 4-a limiting sleeve, 5-a reference surface, 6-a first step surface, 7-a second step surface, 8-a calibration surface, 9-a chamfer surface, 10-a fixing screw and 11-a sink groove.

Detailed Description

The invention will be further described with reference to specific embodiments shown in the drawings.

Referring to fig. 1-3, the utility model discloses a threaded hole measuring tool with depth go-no-go gauge, including screw thread go-no-go gauge probe 1, screw thread no-go gauge probe 2, handle 3 and stop collar 4, wherein, screw thread go-no-go gauge probe 1, one end of screw thread no-go gauge probe 2 is connected with the both ends of handle 3 respectively, install on same handle 3, in order to operate, stop collar 4 is movably cover-mounted in the middle part of screw thread go-no-go gauge probe 1, can move axially relative to the pole portion of screw thread go-no-go gauge probe 1, and be equipped with reference surface 5 on one side of stop collar 4, the opposite side is equipped with first step surface 6 and second step surface 7, reference surface 5, first step surface 6, second step surface 7 are the plane, and second step surface 7 is higher than first step surface 6, the distance between first step surface 6 and the second step surface 7 equals the screw thread depth tolerance size of corresponding screw hole, as shown in fig. 4, the size of the position C is processed into a thread depth tolerance size corresponding to the threaded hole when the size C is designed and processed, a calibration surface 8 is arranged in the middle of the thread go gauge measuring head 1, the calibration surface 8 extends towards the radial direction of the thread go gauge measuring head 1, the distance between the calibration surface 8 and the end surface of the thread go gauge measuring head 1 is equal to the sum of the thread depth of the corresponding threaded hole and the thickness of the limiting sleeve 4, namely, as shown in fig. 4, the distance between the calibration surface 8 and the end surface of the thread go gauge measuring head 1 is equal to the size A + B.

When the utility model is used, the head of the screw thread no-go gauge measuring head 2 is screwed into the measured screw thread hole, if the screw thread no-go gauge measuring head 2 can be screwed in, the screw thread of the screw thread hole is unqualified, otherwise, the screw thread is qualified; and then turning the handle 3, screwing the head of the thread through gauge measuring head 1 into the measured threaded hole and screwing the head into the measured threaded hole in place, then tightly attaching the reference surface 5 of the limiting sleeve 4 to the surface of the orifice of the measured threaded hole, observing the positions of the first step surface 6 and the second step surface 7 of the limiting sleeve 4, if the calibration surface 8 is positioned between the first step surface 6 and the second step surface 7, determining that the thread depth of the threaded hole is qualified, otherwise, determining that the thread depth of the threaded hole is unqualified, and thus quickly judging whether the thread depth of the threaded hole is qualified or not. The utility model discloses a screw hole measuring tool, through set up screw thread lead to rule gauge head and screw thread no-go gage gauge head respectively at handle both ends, behind the screw thread lead to rule gauge head screw in screw hole, utilize two step faces of stop collar to compare with the calibration face, and judge whether the screw thread degree of depth is qualified, utilize screw thread no-go gage gauge head screw in screw hole to judge whether cross the no-go gage to reach the purpose of the screw thread precision and the degree of depth of simultaneous measurement screw hole, when guaranteeing measurement accuracy, effectively improved work efficiency.

Preferably, screw thread lead to rule gauge head 1, screw thread no-go rule gauge head 2 all peg graft in handle 3, and be interference fit between screw thread lead to rule gauge head 1, screw thread no-go rule gauge head 2 and the handle 3, the dismouting of being convenient for is maintained.

Preferably, the outer walls of the handle 3 and the limiting sleeve 4 are both provided with patterns, so that the handle is convenient to grasp.

Preferably, the thread go gauge measuring head 1 on one side of the calibration surface 8 is provided with a chamfer 9, so that the calibration surface 8 can be conveniently machined, and the calibration surface 8 can be more easily identified.

Preferably, the fixing screw 10 is screwed on the periphery of the limiting sleeve 4, and the thread gauge measuring head 1 is reversely jacked through the fixing screw 10, so that the limiting sleeve 4 is locked at a specified position, and the detection precision is further improved.

Preferably, have seted up heavy groove 11 in the middle part of screw thread lead to rule gauge head 1, the width that sinks groove 11 is greater than set screw 10's diameter, and set screw 10 pegs graft in heavy groove 11 for set screw 10's bottom surface compresses tightly in the bottom surface that sinks groove 11, increases area of contact, improves the locking precision, effectively prevents simultaneously that 1 pole portion of screw thread lead to rule gauge head from damaging and influencing the gliding problem of stop collar 4.

The above is only the preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility model and the utility of the patent.

Claims

1. A threaded hole measuring tool with a depth go-no go gauge is characterized by comprising a threaded go gauge measuring head (1), a threaded no-go gauge measuring head (2), a handle (3) and a limiting sleeve (4), one end of the thread go gauge measuring head (1) and one end of the thread no-go gauge measuring head (2) are respectively connected with the two ends of the handle (3), the limiting sleeve (4) is movably sleeved at the middle part of the thread go-gauge measuring head (1), and one side of the limiting sleeve (4) is provided with a reference surface (5), the other side is provided with a first step surface (6) and a second step surface (7), the distance between the first step surface (6) and the second step surface (7) is equal to the thread depth tolerance size of the corresponding threaded hole, the thread go gauge measuring head is characterized in that a calibration surface (8) is arranged in the middle of the thread go gauge measuring head (1), and the distance between the calibration surface (8) and the end surface of the thread go gauge measuring head (1) is equal to the sum of the thread depth of a corresponding threaded hole and the thickness of the limiting sleeve (4).

2. The threaded hole measuring tool with the depth go-no-go gauge according to claim 1, characterized in that the thread go-no-go gauge measuring head (1) and the thread no-go gauge measuring head (2) are inserted into the handle (3), and the thread go-no-go gauge measuring head (1), the thread no-go gauge measuring head (2) and the handle (3) are in interference fit.

3. The threaded hole measuring tool with the depth go-no-go gauge according to claim 1, characterized in that patterns are processed on the outer walls of the handle (3) and the limiting sleeve (4).

4. The threaded hole measuring tool with the depth go-no-go gauge according to claim 1, characterized in that the threaded go-no-go gauge head (1) on one side of the calibration surface (8) is provided with a chamfer surface (9).

5. The threaded hole measuring tool with the depth go-no-go gauge as claimed in any one of claims 1-4, characterized in that a fixing screw (10) is screwed on the periphery of the limiting sleeve (4).

6. The threaded hole measuring tool with the depth go-no go gauge according to claim 5, characterized in that a sunk groove (11) is formed in the middle of the threaded go-no go gauge measuring head (1), and the fixing screw (10) is inserted into the sunk groove (11).