An inner circlip groove measuring device

Abstract

The application discloses an inner snap spring groove measuring device, which comprises a core block, a measuring base arranged on the lower side of the core block and in sliding connection with the core block, a plurality of measuring claws in sliding connection with the core block and capable of moving radially along the core block, a boss clamping claw arranged at the bottom of the measuring claw, a displacement sensor support connected with the core block through bolts, a displacement sensor connected with the measuring base through a probe penetrating through the core block, and a sliding sleeve capable of moving downward along the axial direction to force the plurality of measuring claws to contract radially, so that the measuring claws and the measuring base are inserted into the inner snap spring groove together. During the measuring process, the measuring claws are pressed against the circumferential surface and the upper end surface of the inner snap spring groove under the extrusion of the measuring claw spring, and the measuring base is pressed against the lower end surface of the inner snap spring groove under the action of the core block spring, so that the groove width of the inner snap spring groove is measured through the displacement sensor. Through the simple structure, the groove width of the inner snap spring groove is measured, and the accuracy is improved and the cost of special equipment is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of inner slot measuring tools, in particular to an inner circlip slot measuring device. BACKGROUND

[0002] In the assembly process of an automobile transmission or other shaft system related mechanical structure, a bearing hole is usually provided with an inner circlip slot, and the assembly process needs to select a circlip with a proper thickness according to the actual measurement result of the inner circlip slot, and the assembly quality directly affects the overall performance of the transmission.

[0003] The inner circlip slot of the bearing hole is usually small in diameter and narrow in width, and the conventional measuring method and tool cannot be used or is difficult to operate. At present, the most commonly used way of assembly is as follows: first, a commonly used thickness specification circlip is selected for trial assembly, then a ruler is used to detect the gap, and the specification is increased or decreased according to the size of the gap, which is relatively cumbersome, inaccurate and has no data traceability; another way is to customize a special measuring instrument, which is high in cost and poor in compatibility. SUMMARY

[0004] In order to overcome the defects of the prior art, the purpose of the present application is to provide an inner circlip slot measuring device to improve the accuracy of manual measurement and reduce the cost of special equipment.

[0005] To this end, the present application provides an inner circlip slot measuring device, which comprises: a core block, which is a hollow cylinder; a measuring base arranged on the lower side of the core block and in sliding connection with the core block; a plurality of measuring claws arranged in a ring shape on the circumference of the core block; the measuring claws are in sliding connection with the core block, and the measuring claws can move radially along the core block, wherein the measuring claws are wedge-shaped blocks, and the bottom of the measuring claw has a boss claw; a displacement sensor support arranged on the upper side of the core block and connected with the core block by bolts; a displacement sensor installed on the displacement sensor support, and the probe of the displacement sensor passes through the core block and is connected with the measuring base; and a sliding sleeve arranged outside the core block and the measuring claws, which can move downward along the axial direction to force the radial contraction of the measuring claws, so that the measuring claws and the measuring base can be inserted into the inner circlip slot.

[0006] Among them, the core block spring is arranged between the measuring base and the core block; the measuring claw spring is arranged between the measuring claw and the core block, and in the measuring process, the measuring claw is pressed against the circumferential surface and the upper end surface of the inner circlip slot under the extrusion action of the measuring claw spring, while the measuring base is pressed against the lower end surface of the inner circlip slot under the action of the core block spring, and then the slot width of the inner circlip slot is measured by the displacement sensor.

[0007] Further, the core block is provided with a plurality of guide grooves for installing the measuring claw on the outer circumference, the guide grooves are provided with radially extending guide holes, the guide holes are installed with limiting rods and the measuring claw springs, and the measuring claw is connected with the core block through the limiting rods.

[0008] Further, the measuring claw is provided with three pieces, and the boss clamping claws of the three pieces of the measuring claw are on a plane.

[0009] Further, the measuring base is provided with a column body and a three-claw disc body, and the bottom of the core block is provided with an avoiding groove matched with the measuring base.

[0010] Further, a plurality of slide sleeve springs are arranged between the slide sleeve and the core block to force the slide sleeve to move upward.

[0011] Further, a slide sleeve pressing rod is arranged on the upper side of the slide sleeve, the slide sleeve pressing rod is rotationally connected with the displacement sensor support through a rotating pin to force the slide sleeve to move downward.

[0012] Further, a plurality of spring installation holes one are arranged on the upper part of the core block for installing the slide sleeve springs, and a plurality of spring installation holes two are arranged on the lower part of the core block for installing the core block springs.

[0013] Further, a handle is arranged on the outer side of the displacement sensor, the handle is in a cylindrical or circular truncated cone structure, and the handle is fixedly connected with the displacement sensor support through a long bolt.

[0014] Further, a suspension lifting ring is arranged on the upper end of the handle.

[0015] Further, the displacement sensor is replaced with a micrometer, and a probe of the micrometer is connected with the measuring base.

[0016] The inner snap spring groove measuring device provided by the application measures the groove width by measuring the claw and spring structure and directly measuring the groove width in the inner snap spring groove through the displacement sensor; the simple structure realizes the measurement of the groove width of the inner snap spring groove, provides accuracy and reduces the cost of special equipment compared with the previous scheme, in addition, the size of the corresponding parts can be modified to adapt to the measurement of a plurality of same or similar structures. A new simple and effective way is provided for future similar assembly or measurement.

[0017] In addition to the purposes, features and advantages described above, the application has other purposes, features and advantages. The application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of this application serve to provide further understanding of the present application, the illustrative embodiments thereof, and its description, and do not constitute an improper limitation of the present application. In the drawings:

[0019] Figure 1 Structure diagram of the inner snap spring groove to be measured according to the present application;

[0020] Figure 2 Structure diagram of the inner snap spring groove measuring device according to the present application;

[0021] Figure 3 Structure diagram of the internal mechanism of the inner snap spring groove measuring device according to the present application;

[0022] Figure 4 Exploded view of the internal mechanism of the inner snap spring groove measuring device according to the present application;

[0023] Figure 5 Sectional view of the inner snap spring groove measuring device according to the present application;

[0024] Figure 6 Structure diagram of the inner snap spring groove measuring device before measurement according to the present application;

[0025] Figure 7 Structure diagram of the inner snap spring groove measuring device in the state of measurement according to the present application.

[0026] Explanation of reference signs

[0027] 1, measuring claw; 2, measuring claw spring; 3, limiting rod; 4, sliding sleeve; 5, displacement sensor support; 6, suspension lifting ring; 7, handle; 8, displacement sensor; 9, sliding sleeve pressing rod; 10, sliding sleeve spring; 11, core block; 12, measuring base; 13, core block spring; 14, sensor fixing member; 100, inner snap spring groove. DETAILED DESCRIPTION

[0028] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] As shown in Figure 1 the inner snap spring groove measuring device according to the present application comprises a measuring base 12, a core block 11, a core block spring 13, a measuring claw 1, a measuring claw spring 2, a sliding sleeve 4, a sliding sleeve spring 10, a displacement sensor 8, and a displacement sensor support 5. During measurement, the measuring claw 1 is in contact with the upper edge of the inner snap spring groove 100, the bottom surface of the measuring base 12 is in contact with the lower edge of the inner snap spring groove, and a height difference is formed between the measuring base 12 and the upper clamping claw of the measuring claw 1, which is the width of the inner snap spring groove to be measured.

[0030] Specifically, asFigures 2 to 5 As shown, the measuring base 12 has a column and a three-jaw disc body, the core block 11 is a hollow column, and the core block 11 is provided with a relief groove matching the shape of the measuring base 12, so that the bottom surface of the measuring base 12 is flush with the bottom surface of the core block 11; at the same time, the core block spring 13 is arranged between the measuring base 12 and the core block 11, so that the measuring base 12 can move axially along the core block 11.

[0031] The core block 11 is provided with a plurality of guide grooves on the outer circumference for installing the measuring claws 1, and the guide grooves of the core block 11 are provided with radially extending guide holes, and the guide holes are installed with the limiting rods 3 and the measuring claw springs 2, and the measuring claws 1 are connected with the core block 11 through the limiting rods 3, so that the measuring claws 1 can move radially along the core block 11 in the guide grooves. Among them, the measuring claw 1 is a wedge-shaped block, the bottom of the measuring claw 1 has a boss clamping jaw for clamping the upper edge of the inner clamping spring groove, and the measuring claws 1 are arranged in a circular array on the outside of the core block 11.

[0032] The displacement sensor bracket 5 is arranged on the upper side of the core block 11 and is fixedly connected with the core block 11 through bolts, and the displacement sensor 8 is installed on the displacement sensor bracket 5 and is fixedly installed through the sensor fixing piece 14. In addition, the probe of the displacement sensor 8 penetrates through the core block 11 and is connected with the upper end of the measuring base 12, and when the measuring base 12 moves downward, the displacement sensor 8 can measure the moving distance of the measuring base 12, thereby achieving the purpose of measuring the width of the inner clamping spring groove.

[0033] The sliding sleeve 4 is sleeved on the outside of the core block 11 for sleeving the core block 11 and the upper part of the measuring claw 1, and a plurality of sliding sleeve springs 10 are arranged between the sliding sleeve 4 and the core block 11, and the measuring claw 1 is closely attached to the sliding sleeve 4 through the action of the measuring claw spring 2 and the sliding sleeve spring 10.

[0034] Under the action of the sliding sleeve spring 10, the sliding sleeve 4 is in the upper moving position in the natural state, at this time the sliding sleeve 4 has no limiting effect on the measuring claw 1, and the measuring claw 1 moves outward along the radial direction of the core block 11 under the extrusion action of the measuring claw spring 2, so that the boss clamping jaw protrudes out of the bottom circumference of the core block 11, and can abut against the circumferential surface and the upper end surface of the inner clamping spring groove, while the measuring base 12 abuts against the lower end surface of the inner clamping spring groove under the action of the core block spring, thereby achieving the purpose of measuring the groove width of the inner clamping spring groove.

[0035] The sliding sleeve pressing rod 9 is in a U shape, is rotationally connected with the displacement sensor bracket 5 through a rotating pin, and is located on the upper side of the sliding sleeve 4, when the sliding sleeve pressing rod 9 rotates, a lever structure is formed, the sliding sleeve 4 is extruded downward, the clamping jaw part of the measuring claw 1 is forced to shrink into the core block 11, and the measuring claw 1 and the measuring base 12 of the measuring device are conveniently extended into the inner clamping spring groove.

[0036] The displacement sensor support 5 is externally provided with a handle 7 in a cylindrical or circular truncated cone structure, which is fixedly connected with the displacement sensor support 5 through a long bolt, and is used for protecting the displacement sensor 8 installed on the displacement sensor support 5 and facilitating the pressing of the slide sleeve pressing rod 9 by the staff.

[0037] In the scheme, as shown in the figure, Figure 4 The measuring claw 1 is always in a state of adhesion with the slide sleeve 4 under the elastic force of the measuring claw spring 2, and the measuring claw 1 is kept in a horizontal state through the cooperation of the limiting rod 3 and the core block 11; in the measuring process, the upper edge of the measuring claw is in adhesion with the upper edge of the inner snap spring groove, and the measuring base 12 is in adhesion with the lower edge of the inner snap spring groove or the upper end of the bearing.

[0038] The three measuring claws are circumferentially distributed, and the front end of each measuring claw is provided with a boss claw for hooking the upper edge of the inner snap spring groove in the measuring process.

[0039] In addition, the core block 11 is further provided with a plurality of spring installation holes one in the upper part for installing the slide sleeve spring 10, and a plurality of spring installation holes two in the lower part for installing the core block spring 13.

[0040] It should be noted that the final data of the workpiece is communicated with the upper computer by using the displacement sensor, and the width of the inner snap spring groove can also be measured by using different structures, such as a Bluetooth digital display micrometer, or an ordinary micrometer instead of the data traceability, so as to be connected with the measuring base 12.

[0041] The working principle and working process of the present application will be described below in combination with the drawings.

[0042] Firstly, the staff holds the handle 7 and presses the slide sleeve pressing rod 9 upward, so that the slide sleeve is lowered relative to the core block 11, and the boss claw of the measuring claw 1 is further retracted into the core block 11; then the measuring base 12 is inserted into the inner snap spring groove 100, and the end face of the measuring base 12 is in adhesion with the lower edge of the inner snap spring groove 100; then the slide sleeve pressing rod 9 is released, the slide sleeve 4 moves upward under the action of the slide sleeve spring 10, and the measuring claw moves radially outward under the action of the measuring claw spring 2, so that the boss claw extends out of the bottom circumference of the core block 11 and can abut against the circumferential surface and the upper end surface of the inner snap spring groove, while the measuring base 12 abuts against the lower end surface of the inner snap spring groove under the action of the core block spring; the displacement sensor 8 can measure the movement distance of the measuring base 12, thereby achieving the purpose of measuring the width of the inner snap spring groove.

[0043] The above merely provides the preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. An inner clasp slot measuring device, characterized by, It includes: The core block (11) is a hollow cylinder, The measuring base (12) is arranged on the lower side of the core block (11) and is in sliding connection with the core block (11), A plurality of measuring claws (1) are arranged in an annular array on the circumference of the core block (11), a plurality of the measuring claws (1) are respectively in sliding connection with the core block (11), and the measuring claws (1) can move radially along the core block (11), the measuring claws (1) are wedge-shaped block structures, the measuring claws (1) have boss clamping claws at the bottom, The displacement sensor (8) is connected with the upper end of the measuring base (12) through the core block (11), the displacement sensor support (5) is arranged on the upper side of the core block (11) and is fixedly connected with the core block (11) through bolts, and the displacement sensor (8) is installed on the displacement sensor support (5); The sliding sleeve (4) can move downward in the axial direction to force the plurality of measuring claws (1) to radially contract and make the measuring claws (1) and the measuring base (12) extend into the inner clamping spring groove together. Wherein, the measuring base (12) has a cylinder and a three-claw disc body, the bottom of the core block (11) has an avoidance groove matched with the measuring base (12), so that the bottom surface of the measuring base (12) is flush with the bottom surface of the core block (11); the core block spring (13) is arranged between the measuring base (12) and the core block (11); the measuring claw spring (2) is arranged between the measuring claw (1) and the core block (11), and in the measuring process, the measuring claw (1) is pressed against the circumferential surface and the upper end surface of the inner clamping spring groove (100) under the extrusion action of the measuring claw spring (2), and the measuring base (12) is pressed against the lower end surface of the inner clamping spring groove (100) under the action of the core block spring (13), and then the slot width of the inner clamping spring groove (100) is measured by the displacement sensor (8); In addition, a plurality of sliding sleeve springs (10) are arranged between the sliding sleeve (4) and the core block (11) to force the sliding sleeve (4) to move upward; the sliding sleeve (4) is provided with a sliding sleeve pressing rod (9) on the upper side, and the sliding sleeve pressing rod (9) is rotationally connected with the displacement sensor support (5) through a rotating pin to force the sliding sleeve (4) to move downward.

2. The inner clasp slot measuring device of claim 1, wherein, A plurality of guide grooves for installing the measuring claws (1) are arranged on the outer circumference of the core block (11), a radially extending guide hole is arranged in the guide groove, a limiting rod (3) and the measuring claw spring (2) are installed in the guide hole, and the measuring claw (1) is connected with the core block (11) through the limiting rod (3).

3. The inner clasp slot measuring device of claim 1, wherein, The three measuring claws (1) are arranged on one plane.

4. The inner clasp slot measuring device of claim 1, wherein, A plurality of spring installation holes one are arranged on the upper part of the core block (11) for installing the sliding sleeve spring (10), and a plurality of spring installation holes two are arranged on the lower part of the core block (11) for installing the core block spring (13).

5. The inner clasp slot measuring device of claim 1, wherein, The displacement sensor (8) is externally provided with a handle (7), which is in a cylindrical or circular truncated cone structure, and the handle (7) is fixedly connected with the displacement sensor support (5) through a long bolt.

6. The inner clasp slot measuring device of claim 5, wherein, A hanging ring (6) is mounted on the upper end of the handle (7).

7. The inner clasp slot measuring device of claim 1, wherein, The displacement sensor (8) is replaced by a micrometer, and the probe of the micrometer is connected with the measuring base (12).

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