Depth measuring device

Abstract

The utility model relates to the related technical field of engines, and discloses a depth measuring device which is used for detecting the distance from a workpiece mounting surface to a reference surface, the depth measuring device comprises a positioning piece and a measuring piece, the positioning piece is used for being inserted in a workpiece and used for abutting against the reference surface, the positioning piece is provided with length scale marks, and the measuring piece is used for measuring the length scale marks. The measuring piece is used for being inserted into the workpiece and used for abutting against the mounting face, and the measuring piece is connected with the positioning piece in a nested mode and can move in the length direction of the positioning piece. According to the utility model, the positioning piece and the measuring piece are arranged, the positioning piece and the measuring piece are mutually nested and connected and are inserted into the workpiece, and the positioning piece is provided with the length scale marks, so that during measurement, the positioning piece and the measuring piece are respectively abutted against and fixed with the reference surface and the mounting surface, and the length scale marks are measured according to the relative position of the other end of the measuring piece and the length scale marks; the device can measure the distance from an installation surface to a reference surface, is convenient to use, is high in measurement efficiency, is low in requirements for operation conditions, and is suitable for on-site use.

Description

Technical Field

[0001] The utility model relates to the technical field related to engines, in particular to a depth measuring device. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] During the processing of the cylinder head, the cylinder head injector needs to be accurately installed. The installation position of the cylinder head injector is closely related to the installation depth of the injector bushing. Therefore, the installation depth of the injector bushing needs to be measured.

[0004] The existing depth measuring device consists of a measuring shaft, a sleeve, a micrometer head, a gauge base bracket, a gauge ring, etc. When measuring the distance from the bottom of the cylinder head injector bushing to the bottom surface of the cylinder head after installation, the measurement efficiency is low, the operating conditions are high, and the on-site operation is inconvenient. Utility Model Content

[0005] The purpose of the utility model is to at least solve the problems of low measurement efficiency, high working condition requirements and inconvenient on-site operation of existing depth measuring devices. This purpose is achieved through the following technical solutions:

[0006] The first aspect of the utility model proposes a depth measuring device for detecting the distance from a workpiece mounting surface to a reference surface, comprising a positioning member and a measuring member, wherein the positioning member is used to be inserted into the workpiece and used to abut against the reference surface, and the positioning member is provided with a length scale mark, and the measuring member is used to be inserted into the workpiece and used to abut against the mounting surface, and the measuring member and the positioning member are nested and connected with each other and can move along the length direction of the positioning member.

[0007] The depth measuring device of the utility model is provided with a positioning piece and a measuring piece, the positioning piece and the measuring piece are mutually nested and connected and inserted into the workpiece, and a length scale mark is provided on the positioning piece. When measuring, one end of the positioning piece abuts against the reference surface, and one end of the measuring piece abuts against the installation surface. According to the relative position between the other end of the measuring piece and the length scale mark, the distance from the installation surface to the reference surface can be measured, that is, the installation depth of the workpiece is measured. The depth measuring device of the utility model is convenient to use, has high measurement efficiency, and has low requirements on working conditions, and is suitable for on-site use in workshops.

[0008] In addition, the depth measuring device according to the utility model may also have the following additional technical features:

[0009] In some embodiments of the present invention, the measuring member includes a sliding sleeve, and the positioning member includes a positioning rod, and the positioning rod is slidably disposed in the sliding sleeve.

[0010] In some embodiments of the present invention, the length scale mark is a scale line, and the scale line is arranged on the outer circumferential surface of the positioning rod.

[0011] In some embodiments of the present invention, one end of the sliding sleeve for being inserted into the workpiece has a first abutting surface, and the first abutting surface is used to abut against a first mounting surface of the workpiece.

[0012] In some embodiments of the present invention, a plurality of second abutment surfaces are further provided on the outer peripheral surface of the sliding sleeve, and the plurality of second abutment surfaces are arranged along the axial direction of the sliding sleeve, and the second abutment surfaces are used to abut against the second abutment surface of the workpiece.

[0013] In some embodiments of the utility model, a limiting structure is arranged between the positioning rod and the sliding sleeve, and the limiting structure includes a first limiting portion and a second limiting portion, the first limiting portion is arranged on the outside of the positioning rod, and the second limiting portion is arranged on the inside of the sliding sleeve, and the first limiting portion and the second limiting portion cooperate for limiting.

[0014] In some embodiments of the utility model, the positioning rod includes a first rod body and a second rod body extending along its own length direction, the first rod body is arranged close to the reference plane, the outer diameter of the first rod body is smaller than the outer diameter of the second rod body, and the connection between the first rod body and the second rod body forms the first limiting portion.

[0015] In some embodiments of the present utility model, the sliding sleeve includes a first sliding section and a second sliding section connected to each other, the first sliding section is arranged close to the reference surface, the inner diameter of the first sliding section is smaller than the inner diameter of the second sliding section, and the second limiting portion is formed at the connection between the first sliding section and the second sliding section;

[0016] The outer diameter of the first rod body is matched with the inner diameter of the first sliding section, and the outer diameter of the second rod body is matched with the inner diameter of the second sliding section.

[0017] In some embodiments of the present invention, the depth measuring device further includes an anti-slip component, and the anti-slip component includes at least one anti-slip hoop, and the anti-slip hoop is detachably disposed at an end of the positioning member away from the reference plane.

[0018] In some embodiments of the present invention, a first thread is disposed on the outer circumference of the positioning member, a second thread matching the first thread is disposed on the inner circumference of the anti-slip hoop, and the anti-slip hoop is threadedly connected to the positioning member. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0020] Figure 1 The structure diagram of the depth measuring device according to the embodiment of the utility model is schematically shown;

[0021] Figure 2 A schematic diagram schematically shows a partial cross-sectional view of a sliding sleeve of a depth measuring device according to an embodiment of the present utility model;

[0022] Figure 3 The structure diagram of the positioning rod of the depth measuring device according to the embodiment of the utility model is schematically shown;

[0023] Figure 4 for Figure 1 The enlarged view of point A in the middle;

[0024] Figure 5 The working diagram of the depth measuring device according to the embodiment of the utility model is schematically shown.

[0025] The reference numerals are as follows:

[0026] 1. Sliding sleeve; 10. First sliding section; 11. Second sliding section; 12. First abutting surface; 13. Second abutting surface; 14. Second limiting portion;

[0027] 2. Positioning rod; 20. First rod body; 21. Second rod body; 22. First limiting part;

[0028] 3. Scale line;

[0029] 4. Cylinder head; 40. First mounting surface; 41. Second mounting surface;

[0030] 5. Anti-slip hoop. DETAILED DESCRIPTION

[0031] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0032] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0033] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0034] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0035] During the processing of the cylinder head, the cylinder head injector needs to be accurately installed. The installation position of the cylinder head injector is closely related to the installation depth of the injector bushing. Therefore, it is necessary to measure the installation depth of the injector bushing. The depth measuring device of the related technology consists of a measuring shaft, a sleeve, a micrometer head, a gauge holder bracket, a bezel, etc. When measuring the depth, it is necessary to use the bezel to align the gauge, fix the micrometer, and then measure. The work is cumbersome and the measurement accuracy is high. However, for the measurement of the distance from the bottom of the cylinder head injector bushing to the bottom of the cylinder head after the cylinder head injector bushing is installed, this measuring device is not a universal measuring device. The section length of this new device needs to be customized for the bushings of different products; only a certain scale can be used as the detection standard to detect its size; only manual detection and manual reading can be performed, the intelligent performance is not high, the measurement efficiency is low, and the working conditions are high, and the on-site operation is inconvenient.

[0036] In view of this, the present embodiment provides a depth measuring device, which aims to solve the above technical problems by setting a positioning piece and a measuring piece, wherein a scale line 3 is set on the positioning piece, one end of the positioning piece abuts against the reference surface, and one end of the measuring piece abuts against the mounting surface. According to the relative position of the other end of the measuring piece and the scale line 3, the distance from the mounting surface to the reference surface can be measured, thereby solving the above technical problems.

[0037] like Figures 1 to 5 As shown, according to the embodiment of the utility model, a depth measuring device is proposed, which is used to detect the distance from the installation surface of the workpiece to the reference plane. In this embodiment, the workpiece is the injector bushing of the engine cylinder head 4, and the installation surface is the inner bottom plane of the injector bushing, which is used for the installation of the bushing. When installing the bushing, the cylinder head 4 is placed on the measuring platform, and the bottom surface of the cylinder head 4 contacts the measuring platform. The aforementioned reference plane is the plane, so the depth measuring device of the utility model can be used to measure the distance from the inner bottom plane of the injector bushing to the bottom surface of the cylinder head 4. The depth measuring device of the utility model includes a positioning member and a measuring member, the positioning member is used to be inserted into the workpiece and used to abut against the reference plane, the positioning member is provided with a length scale mark, the measuring member is used to be inserted into the workpiece and used to abut against the installation surface, and the measuring member and the positioning member are nested and connected with each other and can move along the length direction of the positioning member.

[0038] The depth measuring device of the utility model is provided with a positioning piece and a measuring piece, the positioning piece and the measuring piece are mutually nested and connected and inserted into the workpiece, and a length scale mark is provided on the positioning piece. When measuring, one end of the positioning piece abuts against the reference surface, and one end of the measuring piece abuts against the installation surface. According to the relative position between the other end of the measuring piece and the length scale mark, the distance from the installation surface to the reference surface can be measured, that is, the installation depth of the workpiece is measured. The depth measuring device of the utility model is convenient to use, has high measurement efficiency, and has low requirements on working conditions, and is suitable for on-site use in workshops.

[0039] In some embodiments of the utility model, the measuring part includes a sleeve 1, a measuring cavity is provided in the workpiece along the direction from the mounting surface to the reference surface, the sleeve 1 is slidably provided in the measuring cavity along the axial direction of the measuring cavity, and the positioning part includes a positioning rod 2, and the positioning rod 2 is slidably provided in the sleeve 1. Specifically, a mounting cavity is provided in the cylinder head 4, the bushing is installed in the mounting cavity, a cavity is provided on the bushing, and the cavity is coaxially provided with the mounting cavity, namely, the measuring cavity, the sleeve 1 is inserted in the measuring cavity, and the measuring cavity can accommodate the sleeve 1 to move along the axial direction, the sleeve 1 is provided with a sliding cavity along its axial direction, the positioning rod 2 is inserted in the sleeve 1, and can move along the sliding cavity, such as Figure 4 As shown, the length scale is marked as scale lines 3 , which are arranged on the outer circumferential surface of the positioning rod 2 , and the scale lines 3 are arranged along the axial direction of the positioning rod 2 .

[0040] In some embodiments of the utility model, the first end of the sleeve 1 inserted in the workpiece has a first abutting surface 12, and the first abutting surface 12 is used to abut against the first mounting surface 40. Specifically, the sleeve 1 includes a first end and a second end, the first end is an end inserted in the cylinder head 4, and the second end is arranged opposite to the first end. The first end of the sleeve 1 has a first abutting surface 12, and the first abutting surface 12 is a plane. The cylinder head 4 is provided with a first mounting surface 40, and the first mounting surface 40 is a plane. The first abutting surface 12 and the first mounting surface 40 are abutted and matched. When measuring, the sleeve 1 and the positioning rod 2 are inserted into the measuring cavity so that one end of the positioning rod 2 abuts against the reference surface. The positioning rod 2 positions the sliding of the sleeve 1 so that it can move axially along the positioning rod 2, and then the first mounting surface 40 abuts against the first abutting surface 12. The length of the sleeve 1 is smaller than the length of the positioning rod 2. A scale line 3 is set near the other end of the positioning rod 2. The second end of the sleeve 1 is a plane. The distance from the mounting surface to the reference surface can be determined according to the scale line 3 corresponding to the plane, and the installation depth of the bushing can be determined by the distance.

[0041] In some embodiments of the utility model, a plurality of second abutting surfaces 13 are further provided on the outer peripheral surface of the sleeve 1, and the plurality of second abutting surfaces 13 are provided along the axial direction of the sleeve 1, and the second abutting surfaces 13 are used to abut against the second mounting surface 41 of the workpiece. Specifically, a plurality of second mounting surfaces 41 are provided in the cylinder head 4, and the plurality of second mounting surfaces 41 are provided along the axial direction, and the plurality of second abutting surfaces 13 abut against the plurality of second mounting surfaces 41 in a one-to-one corresponding manner. By providing the plurality of second abutting surfaces 13 abut against the second mounting surfaces 41 in a one-to-one corresponding manner, the accuracy and reliability of the measurement can be ensured.

[0042] In some embodiments of the utility model, a limiting structure is provided between the positioning rod 2 and the sliding sleeve 1, and the limiting structure includes a first limiting portion 22 and a second limiting portion 14, the first limiting portion 22 is provided outside the positioning rod 2, and the second limiting portion 14 is provided inside the sliding sleeve 1, and the first limiting portion 22 cooperates with the second limiting portion 14 to limit. Specifically, the positioning rod 2 includes a first rod body 20 and a second rod body 21 extending in its length direction, the first rod body 20 is provided close to the reference plane, the outer diameter of the first rod body 20 is smaller than the outer diameter of the second rod body 21, and the first limiting portion 22 is formed at the connection between the first rod body 20 and the second rod body 21. The sliding sleeve 1 includes a first sliding section 10 and a second sliding section 11 connected to each other. The first sliding section 10 is arranged close to the reference surface. The inner diameter of the first sliding section 10 is smaller than the inner diameter of the second sliding section 11. The second limiting portion 14 is formed at the connection between the first sliding section 10 and the second sliding section 11. The outer diameter of the first rod body 20 is adapted to the inner diameter of the first sliding section 10, and the outer diameter of the second rod body 21 is adapted to the inner diameter of the second sliding section 11. By setting a limiting structure, the first limiting portion 22 cooperates with the second limiting portion 14 to limit the relative position of the positioning rod 2 and the sliding sleeve 1, and prevents the positioning rod 2 from falling out of the sliding sleeve 1, which is convenient for use and measurement.

[0043] In some embodiments of the utility model, the depth measuring device further includes an anti-skid assembly, which includes at least one anti-skid hoop 5, which is detachably arranged on the positioning member. In this embodiment, there are two anti-skid hoops 5, which are arranged on the end of the positioning rod 2 away from the reference plane along the axial direction of the positioning rod 2, and the anti-skid hoop 5 is provided with a plurality of anti-skid patterns, the outer peripheral surface of the positioning rod 2 is provided with a first thread, and the inner peripheral surface of the anti-skid hoop 5 is provided with a second thread matching the first thread, and the anti-skid hoop 5 is threadedly connected to the positioning rod 2. By providing the anti-skid hoop 5, the friction force of the positioning rod 2 can be increased, making it easier to take the positioning rod 2.

[0044] In other embodiments, the number of the anti-slip hoop 5 can be set to one or three according to the length of the positioning rod 2. In addition, the anti-slip hoop 5 and the positioning rod 2 can be connected by snap connection or bonding.

[0045] like Figure 5As shown, when measuring the installation depth of the injector bushing of the cylinder head 4, the matching sliding sleeve 1 and positioning rod 2 are designed according to the installation depth drawing of the injector bushing of the cylinder head 4, and the scale line 3 where the sliding sleeve 1 and the positioning rod 2 overlap is set as the dimension marked on the drawing to be measured. Different structural dimensions and different scales can be set according to different cylinder heads 4. The bottom surface of the cylinder head 4 is placed downward on the measuring platform, and the top of the injector of the sliding sleeve 1 cylinder head 4 is inserted into the installation bushing. The positioning rod 2 is inserted into the sliding sleeve 1 so that the first abutting surface 12 and the first mounting surface 40 are abutted and matched. According to the scale line 3 corresponding to the second end of the sliding sleeve 1, the previously set value is compared to check the distance from the bottom mounting surface of the injector bushing of the cylinder head 4 to the bottom surface of the cylinder head 4. For example, if the scale line 3 corresponding to the second end of the sliding sleeve 1 is at the value 0, it means that the bushing installation depth meets the standard. If the scale line 3 corresponding to the second end of the sliding sleeve 1 is 0, it means that the bushing installation depth meets the standard. When the value of is 1, the measured value is above the set value, which means that the injector installation bushing is too shallow. The reasons may include that the pressure of the bushing installation tooling is too small or the cylinder head 4 mounting hole is processed too shallow. Find out the reasons and deal with them; if the value of the scale line 3 corresponding to the second end of the sleeve 1 is -1, the measured value is below the set value, then the injector installation bushing is too deep. The reasons may include that the pressure of the bushing installation tooling is too large or the cylinder head 4 mounting hole is processed too deep, etc. Find out the corresponding reasons; prevent the circulation and rework of unqualified parts to ensure the processing quality of workpieces.

[0046] The depth measuring device of the utility model has a simple structure, is easy to use, has low requirements on working conditions, and is suitable for use on site in a workshop; it can be used to measure the distance from the bottom mounting surface of the bushing to the bottom surface of the cylinder head 4 after the injector bushings of different cylinder heads 4 are installed through the matching positioning rod 2 and the sliding sleeve 1; the suitability of the tooling pressure of the injector bushing installation in the trial production stage can be verified according to the scale line 3 corresponding to the second end of the sliding sleeve 1, and in the trial production stage, it is determined by the measurement results whether the bushing pressure of this tooling meets the requirements of the drawing.

[0047] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A depth measuring device for detecting the distance from a workpiece mounting surface to a reference surface, characterized in that: include: A positioning member, used for being inserted into the workpiece and abutting against the reference surface, and the positioning member is provided with a length scale mark; The measuring piece is used to be inserted into the workpiece and to abut against the mounting surface. The measuring piece and the positioning piece are nested and connected to each other and can move along the length direction of the positioning piece.

2. The depth measuring device according to claim 1, characterized in that: The measuring member comprises a sliding sleeve (1), and the positioning member comprises a positioning rod (2), wherein the positioning rod (2) is slidably arranged in the sliding sleeve (1).

3. The depth measuring device according to claim 2, characterized in that: The length scale mark is a scale line (3), and the scale line (3) is arranged on the outer peripheral surface of the positioning rod (2).

4. The depth measuring device according to claim 2, characterized in that: One end of the sliding sleeve (1) used for being inserted into the workpiece has a first abutment surface (12), and the first abutment surface (12) is used for abutting against a first mounting surface (40) of the workpiece.

5. The depth measuring device according to claim 2, characterized in that: A plurality of second abutment surfaces (13) are also provided on the outer peripheral surface of the sliding sleeve (1), and the plurality of second abutment surfaces (13) are arranged along the axial direction of the sliding sleeve (1), and the second abutment surfaces (13) are used to abut against a second mounting surface (41) of the workpiece.

6. The depth measuring device according to claim 2, characterized in that: A limiting structure is arranged between the positioning rod (2) and the sliding sleeve (1), and the limiting structure comprises a first limiting portion (22) and a second limiting portion (14), wherein the first limiting portion (22) is arranged outside the positioning rod (2), and the second limiting portion (14) is arranged inside the sliding sleeve (1), and the first limiting portion (22) cooperates with the second limiting portion (14) for limiting.

7. The depth measuring device according to claim 6, characterized in that: The positioning rod (2) comprises a first rod body (20) and a second rod body (21) which are extended along the length direction of the first rod body (20), the first rod body (20) being arranged close to the reference plane, the outer diameter of the first rod body (20) being smaller than the outer diameter of the second rod body (21), and the first limiting portion (22) is formed at the connection between the first rod body (20) and the second rod body (21).

8. The depth measuring device according to claim 7, characterized in that: The sliding sleeve (1) comprises a first sliding section (10) and a second sliding section (11) connected to each other, the first sliding section (10) being arranged close to the reference surface, the inner diameter of the first sliding section (10) being smaller than the inner diameter of the second sliding section (11), and the second limiting portion (14) being formed at the connection between the first sliding section (10) and the second sliding section (11); The outer diameter of the first rod body (20) is matched to the inner diameter of the first sliding section (10), and the outer diameter of the second rod body (21) is matched to the inner diameter of the second sliding section (11).

9. The depth measuring device according to claim 1, characterized in that: The depth measuring device further comprises an anti-skid component, wherein the anti-skid component comprises at least one anti-skid hoop (5), and the anti-skid hoop (5) is detachably arranged on the positioning member.

10. The depth measuring device according to claim 9, characterized in that: The outer circumferential surface of the positioning member is provided with a first thread, and the inner circumferential surface of the anti-slip hoop (5) is provided with a second thread that matches the first thread. The anti-slip hoop (5) is threadedly connected to the positioning member.

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