Part height gauge

Abstract

The utility model relates to a part height testing fixture, which comprises a fixing assembly, which is provided with a positioning reference surface; the dial indicator is installed on the fixing assembly, and a measuring needle is fixed at one end of the dial indicator; and the lining profiling installation assembly is provided with a detection arc surface matched with the probe, the lining profiling installation assembly is placed on the fixing assembly, and the lining profiling installation assembly is attached to the positioning reference surface. The lining profiling installation assembly is arranged at the set position of the fixing assembly through the positioning datum plane, the piston lining is arranged on the lining profiling installation assembly in a sleeving mode, the numerical value of the detection cambered surface and the numerical value of the piston lining can be measured through the measuring needle, and whether the piston lining is qualified or not can be judged according to the numerical value displayed in the dial indicator. The technical problems that in the prior art, due to the fact that three-coordinate detection is adopted for the piston bush, accurate detection equipment detection resources of enterprises are greatly occupied, and economic benefits are low are solved.

Description

Technical Field

[0001] The present application relates to the technical field of detecting the center height of the arc surface of a piston bushing of an automobile engine, and in particular to a part height inspection tool. Background Art

[0002] The piston bushing is a part installed on the inner wall of the cylinder. It can reduce the friction between the piston and the cylinder and also play a sealing role. During the movement of the piston, the fit between the piston bushing and the inner wall of the cylinder must be kept within a suitable range to ensure the normal operation of the piston and reduce wear. Therefore, it is very necessary to inspect the arc surface of the piston bushing to ensure that its quality and size meet the requirements, thereby ensuring the normal operation and service life of the engine.

[0003] Therefore, the arc height of the piston bushing is used as one of the criteria for judging whether the piston bushing is qualified, and three-coordinate detection is usually adopted. However, the use of three-coordinate detection will greatly occupy the company's precision measurement equipment detection resources and have low economic benefits. Summary of the invention

[0004] The present application provides a part height inspection tool, which can solve the technical problem in the related art that the use of three-coordinate inspection for piston bushings will greatly occupy the company's precision inspection equipment inspection resources and have low economic benefits.

[0005] In the first aspect, an embodiment of the present application provides a part height gauge, which includes: a fixed component, the fixed component having a positioning reference surface; a micrometer, the micrometer is installed on the fixed component, and a probe is fixed to one end of the micrometer; a bushing profiling installation component, the bushing profiling installation component has a detection arc surface that cooperates with the probe, the bushing profiling installation component is placed on the fixed component, and the bushing profiling installation component is in contact with the positioning reference surface.

[0006] In combination with the first aspect, in one embodiment, the fixing assembly has a placement plane, and the bushing profiling installation assembly includes: a sliding seat, the sliding seat is placed on the placement plane, and the sliding seat is in contact with the positioning reference surface; a bushing profiling member, the bushing profiling member is fixed to the sliding seat, and the detection arc surface is arranged at an end of the bushing profiling member away from the sliding seat.

[0007] In combination with the first aspect, in one embodiment, the bushing contour mounting assembly further includes: a height adjustment member, the height adjustment member is fixed to the sliding seat, and the bushing contour member is mounted on the height adjustment member.

[0008] In combination with the first aspect, in one embodiment, a bushing protrusion is provided on a side of the height adjustment member close to the bushing contour member, and the bushing protrusion is used to cooperate with the notch groove of the piston bushing.

[0009] In combination with the first aspect, in one embodiment, the height adjustment member is provided with a mounting hole, and the bushing contour member is passed through the mounting hole; the height adjustment member is provided with at least two positioning holes, and at least two of the positioning holes are distributed on opposite sides of the mounting hole; the sliding seat is provided with a connecting hole that cooperates with the positioning hole, and the positioning hole and the connecting hole are passed through a fixing pin.

[0010] In combination with the first aspect, in one implementation, the sliding seat is configured as a regular cubic structure, and the bushing contour is installed at the midpoint of the sliding seat.

[0011] In combination with the first aspect, in one implementation, the detection arc surface has at least three detection areas, and each of the detection areas has a different distance from the placement plane along a direction perpendicular to the positioning reference plane.

[0012] In combination with the first aspect, in one embodiment, the fixing assembly includes: a mounting seat, the bushing contour mounting assembly is placed on the mounting seat; a vertical plate, the vertical plate is fixed to the mounting seat, and a horizontal plate is fixed to one end of the vertical plate away from the mounting seat, the horizontal plate and the mounting seat enclose a detection space, the micrometer is detachably mounted on the horizontal plate, and the measuring needle extends into the detection space.

[0013] In combination with the first aspect, in one embodiment, the fixing assembly further includes a positioning block, the positioning block is fixed to the mounting seat, and the positioning reference surface is provided on the positioning block.

[0014] In combination with the first aspect, in one embodiment, the part height gauge further includes: an auxiliary pad, the auxiliary pad extends along an extension direction of the positioning block, and the auxiliary pad is detachably clamped between the positioning block and the bushing contour mounting assembly.

[0015] The beneficial effects brought by the technical solution provided by the embodiments of the present application include:

[0016] By placing the bushing contour installation assembly at the set position of the fixed assembly through the positioning reference plane, and sleeve the piston bushing on the bushing contour installation assembly, the value of the detection arc surface and the value of the piston bushing can be measured respectively by a measuring needle, and whether the piston bushing is qualified can be judged according to the value displayed in the micrometer, which solves the technical problem in the related technology that the use of three-coordinate detection of the piston bushing will greatly occupy the company's precision measurement equipment detection resources and have low economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a part height gauge provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of a three-dimensional structure in which an auxiliary pad provided in an embodiment of the present application is clamped between a mounting seat and a sliding seat.

[0020] In the figure:

[0021] 1. Fixing assembly; 11. Mounting seat; 111. Storage plane; 12. Vertical plate; 13. Horizontal plate; 14. Positioning block; 141. Positioning reference plane;

[0022] 2. Micrometer; 21. Probe;

[0023] 3. Bushing profiling installation assembly; 31. Sliding seat; 32. Bushing profiling member; 321. Detection arc surface; 33. Height adjustment member; 331. Bushing protrusion;

[0024] 4. Fixed pin;

[0025] 5. Auxiliary pads. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] The embodiment of the present application provides a part height gauge, which can solve the technical problem in the related art that the use of three-coordinate detection for piston bushings will greatly occupy the company's precision measurement equipment detection resources and have low economic benefits.

[0028] See also Figure 1As shown, a part height gauge provided in an embodiment of the present application may include: a fixing component 1, wherein the fixing component 1 has a positioning reference surface 141; a micrometer 2, wherein the micrometer 2 is mounted on the fixing component 1, and a measuring needle 21 is fixed to one end of the micrometer 2; a bushing profiling mounting component 3, wherein the bushing profiling mounting component 3 has a detection arc surface 321 cooperating with the measuring needle 21, the bushing profiling mounting component 3 is placed on the fixing component 1, and the bushing profiling mounting component 3 is in contact with the positioning reference surface 141, and the positioning reference surface 141 can enable the bushing profiling mounting component 3 to be quickly positioned, and the size and size of the bushing profiling mounting component 3 can match the size of the piston bushing to be detected.

[0029] In the embodiment of the present application, the bushing profiling installation component 3 is placed at the set position of the fixing component 1 through the positioning reference surface 141, and the positioning reference surface 141 can enable the bushing profiling installation component 3 to be quickly positioned. The positioning reference surface 141 can have a certain length, and the bushing profiling installation component 3 can slide along the positioning reference surface 141 to the set position, and the piston bushing is sleeved on the bushing profiling installation component 3, so that the probe 21 can be used to measure the value of the detection arc surface 321 and the value of the piston bushing respectively, and the piston bushing can be judged whether the piston bushing is qualified according to the value displayed in the micrometer 2. The specific detection method can be to firstly place the bushing profiling installation component 3 The profiling installation component 3 is moved along the positioning reference surface 141 until the detection arc surface 321 is within the test range of the measuring needle 21, and then the measuring needle 21 contacts the detection arc surface 321, and the value in the micrometer 2 is set to zero. Thereafter, the bushing profiling installation component 3 is continued to be moved along the positioning reference surface 141, so that the measuring needle 21 can contact the top surface of the piston bushing. After the measuring needle 21 touches the top surface of the piston bushing, the value displayed in the micrometer 2 is read, and whether the piston bushing is within the tolerance range is judged according to the displayed value, which solves the technical problem that the use of three-coordinate detection of the piston bushing in the related technology will greatly occupy the company's precision measurement equipment detection resources and have low economic benefits.

[0030] In some optional embodiments, the fixing component 1 has a storage plane 111, and the bushing profiling installation component 3 may include: a sliding seat 31, the sliding seat 31 is placed on the storage plane 111, and the sliding seat 31 is in contact with the positioning reference surface 141. In the embodiment of the present application, one side of the sliding seat 31 is in contact with the positioning reference surface 141 to achieve sliding. In some other embodiments, a roller or other structure that cooperates with the positioning reference surface 141 may be provided on the side of the sliding seat 31 close to the positioning reference surface 141; a bushing profiling member 32, the bushing profiling member 32 is fixed to the sliding seat 31, and the detection arc surface 321 is arranged at one end of the bushing profiling member 32 away from the sliding seat 31. It should be understood that the bushing profiling member 32 can be made according to the size of the piston bushing, and the piston bushing can be sleeved on the bushing profiling member 32, and preferably, the inner wall of the piston bushing and the outer side wall of the bushing profiling member 32 are mutually fitted, and the top surface of the bushing profiling member 32 and the top surface of the piston bushing are at the same level. Since the piston bushing is allowed to have a certain error during the manufacturing process, the bushing profiling member 32 should be arranged so that all piston bushings within the allowable error range can be sleeved therein, and the inner wall of some piston bushings can also have some gaps with the outer side wall of the bushing profiling member 32. The embodiment of the present application can enable the piston bushing to be quickly sleeved on the bushing profiling member 32 by arranging the bushing profiling member 32, so as to quickly perform detection and increase detection efficiency.

[0031] In some optional embodiments, the bushing profiling installation assembly 3 may also include: a height adjustment member 33, the height adjustment member 33 is fixed to the sliding seat 31, and the bushing profiling member 32 is installed on the height adjustment member 33, and the bushing profiling member 32 can change its height by adjusting the positional relationship with the height adjustment member 33. It should be understood that the piston bushing may have different models. When some different models of piston bushings are only different in height, the same bushing profiling installation assembly 3 can be used to detect whether they are qualified or not, and the bushing profiling installation assembly 3 does not need to be replaced to save detection materials. Preferably, the bushing profiling member 32 can be threadedly connected to the height adjustment member 33, and the height of the bushing profiling member 32 can be changed by screwing different numbers of thread turns. In some other embodiments, the bushing profiling member 32 and the height adjustment member 33 can also be set to be buckled or the like.

[0032] In some optional embodiments, a bushing protrusion 331 is provided on one side of the height adjusting member 33 close to the bushing profiling member 32, and the bushing protrusion 331 is used to cooperate with the notch groove of the piston bushing. The piston bushing usually has a notch groove when it is manufactured. In the embodiment of the present application, a bushing protrusion 331 is provided on one side of the height adjusting member 33, so that when the piston bushing needs to be sleeved on the bushing profiling member 32, it can be quickly positioned through the notch groove and the bushing protrusion 331, and it can be ensured that the piston bushing will not rotate relative to the bushing profiling member 32 during the detection process, thereby ensuring the normal progress of the detection.

[0033] In some optional embodiments, the height adjustment member 33 is provided with a mounting hole, and the bushing profiling member 32 is passed through the mounting hole. Preferably, the inner diameter of the mounting hole is set according to the outer diameter of the bushing profiling member 32, and the mounting hole may have an internal thread, then the end of the bushing profiling member 32 close to the height adjustment member 33 may have an external thread adapted to the internal thread; the height adjustment member 33 is provided with at least two positioning holes, and at least two of the positioning holes are distributed on opposite sides of the mounting hole; the sliding seat 31 is provided with a connecting hole that matches the positioning hole, and the positioning hole and the connecting hole are passed through with a fixed Fixed pin 4, in order to make the detection arc surface 321 can be detected by the measuring needle 21 when the bushing profiling installation component 3 is placed on the fixed component 1, it is necessary to place the bushing profiling installation component 3 at a specific position of the fixed component 1. In the embodiment of the present application, the sliding seat 31 is in contact with the positioning reference surface 141. Therefore, in order to ensure that the bushing profiling member 32 can be placed in a position convenient for detection when it is placed on the sliding seat 31 through the height adjustment member 33, a positioning hole and a connecting hole are provided. The correct position can be ensured by aligning the positioning hole and the connecting hole. Thereafter, inserting the fixed pin 4 can fix the height adjustment member 33 relative to the sliding seat 31.

[0034] In some optional embodiments, the sliding seat 31 is configured as a regular cubic structure, and the bushing profiling member 32 is installed at the midpoint of the sliding seat 31. Through this configuration, when the height adjustment member 33 is installed on the sliding seat 31, it can be installed even if it is rotated 180 degrees along the axis of the bushing profiling member 32, thereby reducing the partial alignment process of the part height gauge and increasing the detection efficiency.

[0035] In some optional embodiments, the detection arc surface 321 has at least three detection areas, and the distance between each detection area and the object placement plane 111 along the direction perpendicular to the positioning reference plane 14 is different. In the embodiment of the present application, each detection area can be set to the same height as the object placement plane 111. In some other embodiments, each detection area can also be set to be different along the direction perpendicular to the positioning reference plane 14. At this time, the detection arc surfaces 321 at various locations in the bushing profiling member 32 are set to the same height as the piston bushing, that is, the arc-shaped end face of the piston bushing is simulated, so that during the detection process, each position of the end face of the piston bushing can be detected by a part height gauge, and multiple detections can increase the authenticity and reliability of the detection results.

[0036] In some optional embodiments, the fixing assembly 1 may include: a mounting seat 11, the bushing profiling mounting assembly 3 is placed on the mounting seat 11; a vertical plate 12, the vertical plate 12 is fixed to the mounting seat 11, and a horizontal plate 13 is fixed to one end of the vertical plate 12 away from the mounting seat 11, the vertical plate 12 is fixed to the mounting seat 11 and the horizontal plate 13 and the vertical plate 12 are fixed by screw threads, the horizontal plate 13 and the mounting seat 11 enclose a detection space, the bushing profiling mounting assembly 3 may be located in the detection space, the The micrometer 2 can be detachably mounted on the transverse plate 13, and the measuring needle 21 extends into the detection space. The micrometer 2 can also be detachably mounted on the transverse plate 13 by a threaded connection. The micrometer 2 can be removed from the transverse plate 13 or installed into the transverse plate 13 by screwing the micrometer 2. The micrometer 2 can also be screwed to adjust the length of the measuring needle 21 extending into the detection space, so that the measuring needle 21 can contact the detection arc surface 321 and the end face of the piston bushing, or be away from the detection arc surface 321 and the end face of the piston bushing to facilitate the movement of the bushing profiling member 32.

[0037] In some optional embodiments, the fixing component 1 also includes a positioning block 14, the positioning block 14 is fixed to the mounting seat 11, and the positioning reference surface 141 is provided on the positioning block 14, the positioning block 14 can be fixed to the top surface of the mounting seat 11, and the positioning reference surface 141 is provided on the side of the positioning block 14, that is, the positioning reference surface 141 of the positioning block 14 protrudes from the top surface of the mounting seat 11. By providing the positioning block 14, one side of the sliding seat 31 can be fitted with the positioning reference surface 141 and can also be limited by the positioning block 14 when moving, so that positioning can be faster.

[0038] See also Figure 2As shown, in some optional embodiments, the part height gauge further includes: an auxiliary pad 5, the auxiliary pad 5 extending along the extension direction of the positioning block 14, the auxiliary pad 5 being detachably clamped between the positioning block 14 and the bushing profiling mounting assembly 3. In the embodiment of the present application, in order to increase the accuracy of detection, a plurality of measuring points are set for the piston bushing. Specifically, the micrometer 2 is first adjusted to lift the measuring needle 21 to a certain height, the piston bushing to be detected is sleeved on the bushing profiling member 32, and a sliding seat 31 is placed on the top surface of the mounting seat 11 where the auxiliary pad 5 is not placed. The sliding seat 31 slides along the positioning reference surface 141 to a preset position, and the micrometer 2 is adjusted again to make the measuring needle 21 contact the detection arc surface 321. The contact position can be regarded as the detection reference line. The detection arc surface 321 is at the same height at any position on the line. The value in the micrometer 2 is adjusted according to this detection. Return to zero, continue to slide the sliding seat 31 along the positioning reference surface 141, and move the sliding seat 31 to the position where the probe 21 can touch the top surface of the piston bushing on both sides of the detection reference line. After the probe 21 touches the top surface of the piston bushing, read the values ​​in the micrometer 2 respectively, and judge whether the position is within the qualified range according to the values; then place the auxiliary pad 5 between the positioning block 14 and the sliding seat 31, so that the sliding seat 31 slides along one side of the positioning block 14, and move the sliding seat 31 to the position where the probe can touch the detection arc surface 321 again. Under the action of the auxiliary pad 5, the probe 21 can touch another detection reference line in the detection arc surface 321, and then repeat the above detection steps. Then, the probe 21 can be used to measure whether the top surface of the piston bushing on both sides of the detection reference line is within the qualified range, and then the sliding seat 31 is rotated 180°, and the above detection steps are repeated again. In the embodiment of the present application, the auxiliary pad 5 can be used to detect whether the height of multiple positions of the piston bushing is within the qualified range to increase the accuracy of the detection result.

[0039] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0040] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0041] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A part height gauge, characterized in that: It includes: A fixing assembly (1), wherein the fixing assembly (1) has a positioning reference surface (141); A micrometer (2), the micrometer (2) being mounted on the fixing assembly (1), and a measuring needle (21) being fixed at one end of the micrometer (2); A bushing profiling mounting assembly (3), wherein the bushing profiling mounting assembly (3) has a detection arc surface (321) that cooperates with the measuring needle (21), the bushing profiling mounting assembly (3) is placed on the fixing assembly (1), and the bushing profiling mounting assembly (3) is in contact with the positioning reference surface (141).

2. The part height gauge according to claim 1, characterized in that: The fixing assembly (1) has a storage plane (111), and the bushing contour mounting assembly (3) comprises: A sliding seat (31), the sliding seat (31) being placed on the storage plane (111), and the sliding seat (31) being in contact with the positioning reference surface (141); A bushing profiling member (32) is fixed to the sliding seat (31), and the detection arc surface (321) is arranged at an end of the bushing profiling member (32) away from the sliding seat (31).

3. The part height gauge as claimed in claim 2, characterized in that: The bushing contour mounting assembly (3) further comprises: A height adjustment member (33) is fixed to the sliding seat (31), and the bushing contour member (32) is installed on the height adjustment member (33).

4. The part height gauge as claimed in claim 3, characterized in that: A bushing protrusion (331) is provided on one side of the height adjustment member (33) close to the bushing profiling member (32), and the bushing protrusion (331) is used to cooperate with the notch groove of the piston bushing.

5. The part height gauge as claimed in claim 3, characterized in that: The height adjustment member (33) is provided with a mounting hole, and the bushing profiling member (32) is passed through the mounting hole; The height adjustment member (33) is provided with at least two positioning holes, and the at least two positioning holes are distributed on two opposite sides of the mounting hole; The sliding seat (31) is provided with a connecting hole that matches the positioning hole, and a fixing pin (4) is passed through the positioning hole and the connecting hole.

6. The part height gauge as claimed in claim 5, characterized in that: The sliding seat (31) is configured as a regular quadrilateral structure, and the bushing profiling member (32) is installed at the midpoint of the sliding seat (31).

7. The part height gauge as claimed in claim 2, characterized in that: The detection arc surface (321) has at least three detection areas, and each detection area has a different distance from the object placement plane (111) along a direction perpendicular to the positioning reference plane (141).

8. The part height gauge according to claim 1, characterized in that: The fixing assembly (1) comprises: A mounting seat (11), wherein the bushing contour mounting assembly (3) is placed on the mounting seat (11); A vertical plate (12), the vertical plate (12) is fixed to the mounting seat (11), and a horizontal plate (13) is fixed to one end of the vertical plate (12) away from the mounting seat (11), the horizontal plate (13) and the mounting seat (11) enclose a detection space, the micrometer (2) is detachably mounted on the horizontal plate (13), and the measuring needle (21) extends into the detection space.

9. The part height gauge as claimed in claim 8, characterized in that: The fixing assembly (1) further comprises a positioning block (14), wherein the positioning block (14) is fixed to the mounting seat (11), and the positioning reference surface (141) is arranged on the positioning block (14).

10. The part height gauge according to claim 9, characterized in that: The part height gauge also includes: An auxiliary pad (5), the auxiliary pad (5) extending along the extension direction of the positioning block (14), the auxiliary pad (5) being detachably clamped between the positioning block (14) and the bushing contour mounting assembly (3).

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