CN213041120U

CN213041120U - Threaded hole conical surface runout testing fixture

Info

Publication number: CN213041120U
Application number: CN202021604808.8U
Authority: CN
Inventors: 李戟; 孟立峰
Original assignee: Aien Precision Wuxi Co ltd
Current assignee: Aien Precision Wuxi Co ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2021-04-23
Anticipated expiration: 2030-08-05

Abstract

The utility model relates to the technical field of measurement and inspection, in particular to a threaded hole conical surface jumping inspection device, wherein, a dial indicator is fixedly connected with the upper end of a fixed frame through a fastener, and a measuring head of the dial indicator can stretch out and draw back along a first direction; the supporting cylinder is of a cylindrical structure extending along a first direction, the supporting cylinder is fixed at the lower end of the fixing frame, threads are arranged on the outer side of the lower end of the supporting cylinder, and the supporting cylinder can be in threaded connection with a threaded hole of an engine cylinder body; the measuring part comprises a measuring rod and a measuring column, the measuring column is detachably arranged at the lower end of the measuring rod, the measuring rod is internally connected with the supporting cylinder, and the measuring rod can slide in the supporting cylinder and can rotate around the central line of the supporting cylinder; the up end of measuring stick can with the gauge head butt, measure the post and can with the conical surface butt of screw hole. The utility model discloses a make and the maintenance cost is low, easy operation and efficient when measuring the screw hole conical surface and beating.

Description

Threaded hole conical surface runout testing fixture

Technical Field

The utility model relates to a measure and detect technical field, especially relate to a threaded hole conical surface is beated and is examined utensil.

Background

The threaded hole for oil inlet of the engine cylinder body is a hole with strict matching requirements, unqualified jumping of the conical surface of the hole represents that the hole cannot be tightly matched with an oil inlet pipe, and finally oil leakage and other faults are caused.

The detection method mainly comprises two detection methods, one is an original method, the original trial fitting is used, the oil inlet hole is sealed after oil is added, whether the leakage phenomenon occurs is observed, once the oil leakage situation occurs, cleaning is needed before secondary processing, the method is low in efficiency and difficult to operate, the labor cost of an enterprise is increased, and the market competitiveness of the enterprise is weakened.

In recent years, the detection of the run-out of the tapered surface of the threaded hole depends on a three-coordinate measuring machine. The three-coordinate measuring instrument is adopted to carry out multiple point sampling on the conical surface hole, and the conical surface jumping value of the threaded hole is obtained through calculation.

SUMMERY OF THE UTILITY MODEL

Based on it, the utility model aims to provide a threaded hole conical surface is beated and is examined utensil, the threaded hole conical surface of solving the engine cylinder body beat detection efficiency low, the difficult and high problem of check out test set cost of operation.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a threaded hole conical surface runout gauge, which comprises a fixed frame, wherein the upper end of the fixed frame is fixedly connected with a dial indicator through a fastener, and a measuring head of the dial indicator can stretch out and draw back along a first direction; the supporting cylinder is of a cylindrical structure extending along the first direction, the supporting cylinder is fixed at the lower end of the fixing frame, threads are arranged on the outer side of the lower end of the supporting cylinder, and the supporting cylinder can be in threaded connection with a threaded hole of an engine cylinder body; the measuring part comprises a measuring rod and a measuring column, the measuring column is detachably arranged at the lower end of the measuring rod, the measuring rod is internally connected with the supporting cylinder, and the measuring rod can slide in the supporting cylinder and can rotate around the central line of the supporting cylinder; the upper end face of the measuring rod can be abutted to the measuring head, and the measuring column can be abutted to the conical surface of the threaded hole.

Optionally, a conical measuring head adapted to the conical surface of the threaded hole is disposed at the lower end of the measuring rod, at least one measuring column is detachably disposed on the conical surface of the measuring head, and the distance between each measuring column and the conical top of the measuring head is different.

Optionally, at least one mounting hole is formed in the conical surface of the measuring head, and the measuring column is detachably connected with the mounting hole.

Optionally, the mounting hole is a threaded hole, one end of the measuring column is provided with a stud, and the measuring column and the measuring head are screwed with the threaded hole through the stud.

Optionally, the mounting hole is identical to the cross-sectional shape of the measuring column, and the measuring column is connected to the measuring head in a plug-in connection manner.

Optionally, an elastic sleeve is arranged between the measuring column and the mounting hole.

Optionally, a toggle piece is arranged on the measuring rod, and the toggle piece can drive the measuring rod to rotate in the supporting cylinder.

Optionally, the poking piece is of a cylindrical structure, and the poking piece is fixedly sleeved on the outer side of the measuring rod.

Optionally, the side wall of the toggle member is provided with at least two threaded through holes along the diameter direction of the toggle member, and a screw screwed into each threaded through hole can abut against the measuring rod.

Optionally, a first open hole and a second open hole are formed in the fastener, the first open hole is used for fixing the fastener to the fixing frame, and the second open hole is used for fixing the dial indicator to the fastener.

The utility model has the advantages that:

the utility model provides a screw hole conical surface runout examines utensil, the upper end of mount has the amesdial through the fastener rigid coupling, the gauge head of amesdial can stretch out and draw back along first direction; the supporting cylinder is of a cylindrical structure extending along a first direction, the supporting cylinder is fixed at the lower end of the fixing frame, threads are arranged on the outer side of the lower end of the supporting cylinder, and the supporting cylinder can be in threaded connection with a threaded hole of an engine cylinder body; the measuring part comprises a measuring rod and a measuring column, the measuring column is detachably arranged at the lower end of the measuring rod, the measuring rod is internally connected with the supporting cylinder, and the measuring rod can slide in the supporting cylinder and can rotate around the central line of the supporting cylinder; the up end of measuring stick can with the gauge head butt, measure the post and can with the conical surface butt of screw hole.

Through rotating the stirring piece, the stirring piece drives the inscription and rotates in the measuring stick of a support section of thick bamboo, the roughness of the measuring column measurement screw hole conical surface of measuring stick lower extreme, when protruding appears in the conical surface of screw hole, the measuring stick rebound in a support section of thick bamboo, when sunken appears in the conical surface of screw hole, the measuring stick moves down in a support section of thick bamboo, this process also follows the action of reciprocating with the gauge head of the up end butt of measuring stick, the amesdial can measure the conical surface value of beating of screw hole according to the action of reciprocating of gauge head. The conical surface pulsation measuring device with the dial indicator is low in manufacturing and maintenance cost, and is simple to operate and high in efficiency when measuring conical surface pulsation of the threaded hole.

Drawings

FIG. 1 is a schematic structural view of a threaded hole conical surface run-out gauge provided by the embodiment of the present invention;

FIG. 2 is a schematic view of a threaded hole conical surface runout gauge provided by an embodiment of the present invention in cooperation with a threaded hole of an engine cylinder block;

FIG. 3 is an enlarged view of the internal structure of the toggle member at A in FIG. 2;

fig. 4 is a partially enlarged view at B in fig. 2.

In the figure:

1. a fixed mount; 2. a fastener; 21. a handle; 3. a support cylinder; 4. a measuring member; 41. a measuring rod; 411. A toggle piece; 42. a measuring head; 43. a measuring column;

100. a dial indicator; 101. a measuring head;

200. an engine block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Fig. 1 is the utility model provides a threaded hole conical surface is beated and is examined a structural schematic diagram, fig. 2 is the utility model provides a threaded hole conical surface is beated and is examined a screw hole cooperation schematic diagram with the engine cylinder body, fig. 3 is the inner structure enlargements that A department stirred in fig. 2, fig. 4 is the partial enlargements of B department in fig. 2. Referring to fig. 1 to 4, the threaded hole conical surface runout testing fixture provided in this embodiment includes a fixing frame 1, a supporting cylinder 3, and a measuring part 4, wherein a dial indicator 100 is fixedly connected to an upper end of the fixing frame 1 through a fastening part 2, and a measuring head 101 of the dial indicator 100 can extend and retract along a first direction; the supporting cylinder 3 is of a cylindrical structure extending along a first direction, the supporting cylinder 3 is fixed at the lower end of the fixing frame 1, threads are arranged on the outer side of the lower end of the supporting cylinder 3, and the supporting cylinder 3 can be in threaded connection with a threaded hole of the engine cylinder body 200; the measuring part 4 comprises a measuring rod 41 and a measuring column 43, the measuring column 43 is detachably arranged at the lower end of the measuring rod 41, the measuring rod 41 is internally connected with the supporting cylinder 3, and the measuring rod 41 can slide in the supporting cylinder 3 and can rotate around the central line of the supporting cylinder 3; the upper end surface of the measuring rod 41 can abut against the gauge head 101, and the measuring column 43 can abut against the tapered surface of the screw hole. In this embodiment, preferably, the contact end of the measuring column 43 with the conical surface of the threaded hole is semi-spherical or conical, so that the contact area between the measuring column 43 and the end surface of the inlet hole is small, and the measuring sensitivity of the device is improved.

The lower end of the measuring rod 41 is provided with a conical measuring head 42 adapted to the conical surface of the threaded hole, the conical surface of the measuring head 42 is detachably provided with at least one measuring column 43, and the distance from each measuring column 43 to the conical top of the measuring head 42 is different. This set up on the one hand can change after measuring the wearing and tearing of post 43, guarantees measurement accuracy, on the one hand, can make the embodiment of the utility model provides an enlarge the test range when the test, further improve measured precision.

The conical surface of the measuring head 42 is provided with at least one mounting hole, and the measuring column 43 is detachably connected with the mounting hole. In the embodiment, the number of the mounting holes can be preferably one, two, three or five, and can be adjusted according to the size of the conical surface of the threaded hole and the range of the end surface to be tested. In this embodiment, three mounting holes are disposed on the conical surface of the measuring head 42, and the three mounting holes are arranged equidistantly along a generatrix direction of the conical surface. In use, one of the three mounting holes is used at a time to connect with the measuring head 42. This setting can make the embodiment of the utility model provides a can test the different regions of the screw hole conical surface respectively through measuring head 42 in the mounting hole of difference in order to enlarge test range, further improve measured precision.

The quick mounting and dismounting between the measuring column 43 and the measuring head 42 is beneficial to improving the measuring efficiency, so that the measuring column 43 is screwed on the measuring head 42. Specifically, the mounting hole is a threaded hole, one end of the measuring column 43 is provided with a stud, and the measuring column 43 and the measuring head 42 are screwed with the threaded hole through the stud.

The mounting hole is consistent with the cross-sectional shape of the measuring column 43, and the measuring column 43 is connected with the measuring head 42 in a plug-in connection mode. In this embodiment, the cross-sectional shapes of the mounting hole and the measuring column 43 may be both circular, triangular, quadrangular, or polygonal with other numbers of sides. Illustratively, the mounting hole is a circular hole, and one end of the measuring column 43 is provided with a cylindrical rod, wherein the measuring column 43 and the measuring head 42 are in interference fit with the cylindrical rod through the circular hole.

In order to complete the plugging quickly, an elastic sleeve is provided between the measuring column 43 and the mounting hole. Specifically, in this embodiment, the cylindrical rod of the measuring column 43 is sleeved with an elastic sleeve, and the thickness of the elastic sleeve is greater than the difference between the radius length of the circular mounting hole and the radius length of the cylindrical rod, that is, the cylindrical rod sleeved with the elastic sleeve can be in interference fit with the circular mounting hole. Because the elastic sleeve has elasticity, the measuring column 43 can be clamped in the mounting hole in the plugging process. The elastic sleeve may be made of rubber in this embodiment.

For the convenience of manual rotation measuring stick 41 in the measurement process, the utility model discloses be equipped with on the measuring stick 41 and dial piece 411, stir and dial piece 411 and can drive measuring stick 41 at the 3 internal rotations of support cylinder.

Preferably, the toggle element 411 is a cylindrical structure, and the toggle element 411 is fixedly sleeved on the outer side of the measuring rod 41. The toggle member 411 is designed to be a cylinder structure so as to rotate the toggle member 411 more uniformly. In this embodiment, the measuring rod 41 is preferably a cylindrical structure, and the inner diameter of the toggle member 411 is adapted to the diameter of the measuring rod 41, so that on one hand, material selection is facilitated, and on the other hand, the toggle member 411 is conveniently matched.

At least two threaded through holes are formed in the side wall of the toggle piece 411 along the diameter direction of the toggle piece 411, and screws screwed into each threaded through hole can abut against the measuring rod 41. In this embodiment, optionally, the side wall of the toggle member 411 is provided with two threaded through holes along the same diameter direction of the toggle member 411, and the relative positions of the measuring rod 41 and the toggle member 411 are adjusted by the length of the two screws extending into the threaded through holes in the toggle member 411, so that the center lines of the cylindrical measuring rod 41 and the toggle member 411 coincide. During the rotation of the toggle member 411, the rotation speed of the measuring rod 41 is relatively uniform. Because gauge head 101 of amesdial 100 passes through elastic construction and realizes stretching out and drawing back, and during the conical surface unevenness, measuring stick 41's upper and lower drunkenness speed can influence the flexible sensitivity of gauge head 101, consequently adjusts the central line coincidence of stirring piece 411 and measuring stick 41, can improve to a certain extent the utility model discloses sensitivity.

Specifically, the fastener 2 is provided with a first open hole for fixing the fastener 2 to the fixing frame 1 and a second open hole for fixing the dial indicator 100 to the fastener 2. In this embodiment, the second opening hole can adapt to the dial indicator 100 of different models, need not to consider the cooperation required precision man-hour, and machining efficiency is high, and is with low costs, is favorable to reducing the manufacturing cost of utensil is examined to screw hole conical surface beating. Specifically, in this embodiment, the opening of the first opening hole is provided with a fixing hole with a center line perpendicular to the center line of the first opening hole, the bolt passes through the fixing hole and is screwed up with the nut in a matching manner to close the opening of the first opening hole, and the fixing frame 1 in the first opening hole can be clamped tightly in the process. Similarly, the second opening hole is matched with the bolt to clamp the shaft sleeve of the dial indicator 100.

Optionally, the handle 21 is arranged on the fastener 2, so that an operator can conveniently hold the threaded hole conical surface jumping detection tool when measuring the conical surface flatness of the threaded hole, in this embodiment, the handle 21 is connected with the fastener 2 in a threaded manner, and further, the bolt in threaded connection with the fastener 2 can tighten the opening of the first opening hole of the fastener 2 to clamp the fixing frame 1. Optionally, the lower end of the fixing frame 1 is provided with a third opening, and the support cylinder 3 is placed in the opening and locked by a bolt.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. The utility model provides a utensil is examined to screw hole conical surface is beated which characterized in that includes:

the upper end of the fixing frame (1) is fixedly connected with a dial indicator (100) through a fastener (2), and a measuring head (101) of the dial indicator (100) can stretch and retract along a first direction;

the supporting cylinder (3) is of a cylindrical structure extending along the first direction, the supporting cylinder (3) is fixed at the lower end of the fixing frame (1), threads are arranged on the outer side of the lower end of the supporting cylinder (3), and the supporting cylinder (3) can be in threaded connection with a threaded hole of an engine cylinder body (200);

the measuring part (4) comprises a measuring rod (41) and a measuring column (43), the measuring column (43) is detachably arranged at the lower end of the measuring rod (41), the measuring rod (41) is internally connected with the supporting cylinder (3), and the measuring rod (41) can slide in the supporting cylinder (3) and can rotate around the central line of the supporting cylinder (3); the upper end face of the measuring rod (41) can be abutted against the measuring head (101), and the measuring column (43) can be abutted against the conical surface of the threaded hole.

2. The threaded hole cone runout testing fixture according to claim 1, wherein the lower end of the measuring rod (41) is provided with a tapered measuring head (42) adapted to the tapered surface of the threaded hole, the tapered surface of the measuring head (42) is detachably provided with at least one measuring column (43), and the distance from each measuring column (43) to the top of the measuring head (42) is different.

3. The threaded hole cone run-out gauge according to claim 2, wherein the measuring head (42) has at least one mounting hole on its conical surface, and the measuring post (43) is detachably connected to the mounting hole.

4. The threaded hole cone runout testing fixture of claim 3, wherein the mounting hole is a threaded hole, a stud is provided at one end of the measuring column (43), and the measuring column (43) and the measuring head (42) are screwed with the threaded hole through the stud.

5. The threaded hole cone runout gauge according to claim 3, wherein the mounting hole is in accordance with the cross-sectional shape of the measuring column (43), and the measuring column (43) is connected to the measuring head (42) in a plug-in connection.

6. The threaded hole cone run-out gauge according to claim 5, characterized in that an elastic sleeve is arranged between the measuring column (43) and the mounting hole.

7. The threaded hole cone runout testing fixture of claim 1, wherein the measuring rod (41) is provided with a toggle member (411), and the toggle member (411) can be toggled to drive the measuring rod (41) to rotate in the support cylinder (3).

8. The threaded hole cone runout testing fixture according to claim 7, wherein the toggle member (411) is of a cylindrical structure, and the toggle member (411) is fixedly sleeved outside the measuring rod (41).

9. The threaded hole cone runout testing fixture according to claim 8, wherein the side wall of the toggle member (411) is provided with at least two threaded through holes along the diameter direction of the toggle member (411), and a screw screwed into each threaded through hole can abut against the measuring rod (41).

10. The threaded hole cone runout gauge according to claim 1, wherein the fastener (2) is provided with a first open hole and a second open hole, the first open hole is used for fixing the fastener (2) to the fixing frame (1), and the second open hole is used for fixing the dial indicator (100) to the fastener (2).