Piston spigot diameter measuring device

Abstract

The utility model relates to the technical field of piston detection, and provides a piston spigot diameter measuring device, which comprises a supporting platform; the linear guide rail is arranged on the supporting platform; the fixed mould is fixedly connected with the linear guide rail through a connecting cushion block; the measuring mould is connected to the linear guide rail through a sliding block; the guide shaft is connected with the measuring mould and the fixed mould, a spring is sleeved on the guide shaft, and one end of the guide shaft is fixed on the fixed mould through a locking piece I; the dial indicator bracket is arranged at the bottom of the measuring mould; the dial indicator is mounted on the dial indicator bracket; the measuring feeler lever bracket is mounted on the supporting platform and is positioned below the fixed mould; and the measuring feeler lever is arranged on the measuring feeler lever bracket through a locking piece II. According to the technical scheme of the utility model, the diameter of the piston spigot is detected through the left and right sliding of the measuring mould, the measuring precision is improved, the micrometer is directly used for calibration, the detection error caused by temperature is reduced, and the measuring precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of piston detection, in particular to a piston stop diameter measuring device. Background Art

[0002] The stop process is the positioning reference of the piston. The size of the piston stop diameter is related to the processing accuracy of the entire piston. Its importance is self-evident. In the related technology, the stop diameter is generally detected by a through-and-through gauge or the diameter is calibrated by a gauge. The difference between the gauge diameter and the piston diameter is compared to determine the stop diameter data. There are the following technical defects:

[0003] (1) The go / no-go gauge detects the stop diameter. This detection method has low accuracy (resolution). Different operators will produce different results. The measurement angle and force will affect the measurement accuracy.

[0004] (2) Calibrate the diameter by comparing the gauge diameter with the piston diameter, and use the difference to determine the value of the stop diameter. This method of detection is greatly affected by temperature and is only suitable for constant temperature environments. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0006] To this end, one purpose of the utility model is to provide a piston stop diameter measuring device, which detects the piston stop diameter by sliding a measuring jig installed on a linear guide rail left and right, thereby improving the measurement accuracy, directly using a micrometer for calibration, reducing the detection error caused by temperature, ensuring measurement accuracy, and helping to improve product quality.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides a piston stop diameter measuring device, including: a supporting platform; a linear guide rail, arranged on the supporting platform; a fixed jig, fixedly connected to the linear guide rail through a connecting pad; a measuring jig, connected to the linear guide rail through a slider, the measuring jig moves along the linear slide rail, the measuring jig and the fixed jig are spaced apart and the opposite surfaces are parallel; a guide shaft, connecting the measuring jig and the fixed jig, a spring is sleeved on the guide shaft, and one end of the guide shaft is fixed to the fixed jig through a locking member I; a dial gauge bracket, arranged at the bottom of the measuring jig; a dial gauge, mounted on the dial gauge bracket; a measuring feeler rod bracket, mounted on the supporting platform and below the fixed jig; a measuring feeler rod, mounted on the measuring feeler rod bracket through a locking member II, and the measuring feeler rod is coaxially arranged with the measuring rod of the dial gauge.

[0008] Preferably, two guide shafts are arranged at intervals and are respectively located on both sides of the linear guide rail.

[0009] Preferably, a step hole I is provided at the end of the measuring jig, and the other end of the guide shaft is placed in the step hole I, and the other end of the guide shaft can move relatively in the step hole I;

[0010] The end of the fixing jig is provided with a step hole II, one end of the guide shaft is placed in the step hole II and is locked and fixed by a locking member I.

[0011] The two ends of the spring are respectively placed in the step hole I and the step hole II.

[0012] Preferably, the plane parallelism of the opposite surfaces of the measuring jig and the fixing jig is less than 0.03 mm.

[0013] Preferably, the coaxiality between the measuring feeler rod and the measuring rod of the micrometer is less than 0.1 mm.

[0014] The piston stop diameter measuring device proposed in the utility model has the following beneficial technical effects:

[0015] (1) The piston stop diameter measuring device proposed by the utility model has a simple structure, is easy to use, has high measuring efficiency, and has higher measuring accuracy.

[0016] (2) The utility model proposes a piston stop diameter measuring device structure that detects the piston stop diameter by sliding a measuring jig mounted on a linear guide rail left and right, with a small clearance during movement and high measurement accuracy.

[0017] (3) The piston stop diameter measuring device structure proposed by the utility model uses a micrometer for calibration, which is not easily affected by temperature, further reduces measurement errors and improves measurement accuracy.

[0018] Additional aspects and advantages of the present invention will be given in the following description, and some will become apparent from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 A schematic structural diagram of a piston stop diameter measuring device according to an embodiment of the utility model is shown;

[0021] Figure 2 A schematic diagram of the front view of a piston stop diameter measuring device according to an embodiment of the utility model is shown;

[0022] Figure 3FIG. 1 is a schematic diagram of a top view of a piston stop diameter measuring device according to an embodiment of the utility model.

[0023] in, Figures 1 to 3 The corresponding relationship between the reference numerals and the components is as follows:

[0024] 102 supporting platform, 104 linear guide rail, 106 fixing jig, 1062 step hole II, 108 connecting pad, 110 measuring jig, 1102 step hole I, 112 slider, 114 guide shaft, 116 spring, 118 locking piece I, 120 micrometer bracket, 122 micrometer, 1222 measuring rod, 124 measuring touch rod bracket, 126 measuring touch rod, 128 locking piece II. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0027] Combine the following Figures 1 to 3 A piston stop diameter measuring device according to an embodiment of the utility model is described in detail.

[0028] like Figures 1 to 3As shown, a piston stop diameter measuring device according to an embodiment of the utility model comprises: a support platform 102, a linear guide 104, a fixed jig 106, a measuring jig 110, a guide shaft 114, a spring 116, a micrometer bracket 120, a micrometer 122, a measuring feeler bracket 124, a measuring feeler 126, etc. The linear guide 104 is mounted on the support platform 102, the fixed jig 106 is fixedly connected to the linear guide 104 through a connecting pad 108, the measuring jig 110 is connected to the linear guide 104 through a slider 112, and the measuring jig 110 can move left and right on the linear guide 104, thereby realizing the detection of the piston stop diameter. The measuring jig 110 and the fixed jig 106 are arranged at intervals and the opposite surfaces are parallel, the piston is placed between the measuring jig 110 and the fixed jig 106, and the stop position contacts the measuring jig 110 and the fixed jig 106 to realize the measurement of its diameter. The guide shaft 114 connects the measuring jig 110 and the fixing jig 106 , a spring 116 is sleeved on the guide shaft 114 , one end of the guide shaft 114 is fixed to the fixing jig 106 via a locking member Ⅰ 118 , the guide shaft 114 guides and limits the movement of the measuring jig 110 , and the spring 116 resets it. The micrometer bracket 120 is set at the bottom of the measuring jig 110, the micrometer 122 is installed on the micrometer bracket 120, the measuring feeler rod bracket 124 is installed on the supporting platform 102 and is located below the fixed jig 106, the measuring feeler rod 126 is installed on the measuring feeler rod bracket 124 through the locking piece II 128, the measuring feeler rod 126 and the measuring rod 1222 of the micrometer 122 are through-axis arranged, the micrometer 122 moves with the measuring jig 110, and measures the distance of the end face measuring contact position of the measuring feeler rod 126, thereby realizing the measurement of the piston stop diameter, with small moving clearance and high measurement accuracy.

[0029] Furthermore, if Figure 3 As shown, two guide shafts 114 are spaced apart and are located on both sides of the linear guide rail 104 , respectively, thereby ensuring that the measuring jig 110 moves left and right in parallel along the linear guide rail 104 , further ensuring the measurement accuracy.

[0030] Furthermore, if Figure 2 and Figure 3 As shown, the end of the measuring jig 110 is provided with a step hole I1102, and the other end of the guide shaft 114 is placed in the step hole I1102, and the other end of the guide shaft 114 can move relatively in the step hole I1102; the end of the fixing jig 106 is provided with a step hole II1062, and one end of the guide shaft 114 is placed in the step hole II1062, and is locked and fixed by a locking member I118, and the two ends of the spring 116 are placed in the step hole I1102 and the step hole II1062. Therefore, the measuring jig 110 can be automatically reset after moving.

[0031] Furthermore, the plane parallelism of the opposite surfaces of the jig 110 and the fixed jig 106 is measured.

[0032] <0.03mm. Thus, the measurement accuracy of the piston stop diameter is further guaranteed.

[0033] Furthermore, the coaxiality between the measuring feeler rod 126 and the measuring rod 1222 of the micrometer 122 is less than 0.1 mm. Thus, the accuracy of the micrometer 122 during calibration is further guaranteed, and the micrometer 122 is not easily affected by temperature, thereby further ensuring the measurement accuracy of the piston stop diameter.

[0034] The working process of a piston stop diameter measuring device proposed in the utility model is as follows:

[0035] The measuring jig 110 is controlled to move to contact with the fixed jig 106. At the same time, the measuring rod 1222 of the micrometer 122 contacts the end face measuring contact point of the measuring feeler rod 126, and the micrometer 122 is read or reset to zero for calibration; the piston is placed between the measuring jig 110 and the fixed jig 106, the stop position contacts with the measuring jig 110 and the fixed jig 106, the micrometer 122 moves with the measuring jig 110, the micrometer 122 is read, and the stop diameter of the piston is measured.

[0036] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0037] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0038] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A piston stop diameter measuring device, characterized in that: include: A support platform; a linear guide rail, arranged on the support platform; a fixed jig, fixedly connected to the linear guide rail via a connecting pad; a measuring jig, connected to the linear guide rail via a slider, the measuring jig moves along the linear guide rail, the measuring jig and the fixed jig are spaced apart and their opposite surfaces are parallel; a guide shaft, connecting the measuring jig and the fixed jig, a spring is sleeved on the guide shaft, and one end of the guide shaft is fixed to the fixed jig via a locking member I; A micrometer bracket is arranged at the bottom of the measuring jig; a micrometer is installed on the micrometer bracket; a measuring feeler rod bracket is installed on the supporting platform and is located below the fixed jig; a measuring feeler rod is installed on the measuring feeler rod bracket through a locking piece II, and the measuring feeler rod is coaxially arranged with the measuring rod of the micrometer.

2. The piston stop diameter measuring device according to claim 1, characterized in that: Two guide shafts are arranged at intervals and are respectively located on both sides of the linear guide rail.

3. The piston stop diameter measuring device according to claim 2, characterized in that: A step hole I is provided at the end of the measuring jig, and the other end of the guide shaft is placed in the step hole I, and the other end of the guide shaft can move relatively in the step hole I; A step hole II is arranged at the end of the fixing jig, one end of the guide shaft is placed in the step hole II and is locked and fixed by a locking member I, and two ends of the spring are respectively placed in the step hole I and the step hole II.

4. The piston stop diameter measuring device according to claim 1, characterized in that: The plane parallelism of the opposite surfaces of the measuring jig and the fixing jig is less than 0.03 mm.

5. The piston stop diameter measuring device according to claim 1, characterized in that: The coaxiality between the measuring feeler rod and the measuring rod of the micrometer is less than 0.1 mm.

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