Oil hole position degree testing fixture

Abstract

The utility model discloses an oil hole position degree testing fixture which comprises a supporting frame, a fixing mechanism and a detecting mechanism. The supporting frame comprises an end frame and a sliding rod. The two end frames are symmetrically arranged in the length direction of the supporting frame. A sliding rod is fixedly arranged between the top ends of the two end frames in the length direction of the supporting frame. The two ends, in the axis direction, of the sliding rod are fixedly connected with the two end frames correspondingly. The two sliding rods are symmetrically arranged in the width direction of the supporting frame. A fixing mechanism is installed between the bottom ends of the two end frames and used for fixing a crankshaft. The fixing mechanism comprises a movable rod, a supporting plate and a spring; the two sliding rods are jointly provided with a detection mechanism which is used for detecting the position degree of the oil hole. The detection mechanism comprises a sliding block, a rotating shaft and a detection rod. The oil hole position degree gauge is simple in structure, convenient to operate, flexible and practical.

Description

Technical Field

[0001] This application relates to the technical field of automotive inspection tools, and particularly to a hole position gauge for oil holes. Background Art

[0002] In order to reduce the friction during the movement of the crankshaft and increase the service life of the crankshaft, oil holes for injecting lubricating oil are provided on both the main journal and the connecting rod journal of the crankshaft. The oil holes on the main journal and the connecting rod journal of the crankshaft are interconnected. Through these oil holes, engine oil can be transported to the working surface of the connecting rod journal for sufficient lubrication, which helps to reduce friction and wear and improve the operating efficiency and service life of the engine.

[0003] The oil holes are inclined oil holes with a spatial angle so that the lubricating oil can effectively enter the lubrication area. During the manufacturing process, it is necessary to accurately detect the position of the inclined oil holes. The existing detection methods for the spatial angle of the crankshaft oil holes include depth gauges, comparison plug gauges, coordinate measuring rulers, etc. However, the detection process is relatively complex and depends more on the proficiency of the detection personnel, resulting in a long detection cycle for the hole position of the oil holes and difficulty in grasping the accuracy. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a hole position gauge for oil holes with a simple structure, convenient operation, flexibility and practicality.

[0005] A hole position gauge for oil holes provided by this application includes a support frame, a fixing mechanism and a detection mechanism;

[0006] The support frame includes end frames and sliding rods; two end frames are symmetrically arranged along the length direction of the support frame; a sliding rod is fixedly arranged between the tops of the two end frames along the length direction of the support frame; both ends of the sliding rod along the axial direction are fixedly connected to the two end frames respectively; two sliding rods are symmetrically arranged along the width direction of the support frame;

[0007] A fixing mechanism for fixing the crankshaft is installed between the bottoms of the two end frames; the fixing mechanism includes a movable rod, a support plate and a spring;

[0008] A detection mechanism for detecting the hole position of the oil holes is jointly installed on the two sliding rods; the detection mechanism includes a slider, a rotating shaft and a detection rod.

[0009] Preferably, a movable rod penetrates through the middle of the bottom end of the end frame along the length direction of the support frame; the movable rod is slidably connected to the corresponding end frame along the length direction of the support frame; support plates are fixedly arranged on the opposite surfaces of the two movable rods, and limiting plates are fixedly arranged on the opposite surfaces; a spring is installed between the support plate and the corresponding end frame; both ends of the spring are fixedly connected to the adjacent support plate and the adjacent end frame respectively; a support groove is fixedly opened at the top end of the support plate.

[0010] Preferably, there are two sliders symmetrically arranged along the width direction of the support frame within the same testing mechanism; the slider is slidably connected to the adjacent slide bar; a rotating shaft is rotatably arranged between the two sliders; the axis direction of the rotating shaft is parallel to the width direction of the support frame; both ends of the rotating shaft along the axis direction are rotatably connected to the two sliders respectively; a testing rod is arranged through the rotating shaft along the diameter direction in the middle of the rotating shaft along the axis direction; the testing rod is arranged as a cylinder and is movably connected to the rotating shaft.

[0011] Preferably, there is one or more testing mechanisms arranged along the axis direction of the slide bar.

[0012] Preferably, a limiting ball is fixedly arranged at the top end of the testing rod.

[0013] Preferably, a scale is arranged along the length direction on the top surface of the support frame; both ends of the scale along the length direction are fixedly connected to the top ends of the two end frames respectively; a scale is arranged on the surface of the slider along the width direction of the support frame close to the fixing mechanism.

[0014] Compared with the prior art, the beneficial effects of the present application are as follows:

[0015] (1) The fixing mechanism of the present application has a simple structure, is convenient and practical, can be applied to crankshafts of various specifications, and after clamping the crankshaft, the position of the crankshaft is fixed and does not shake without external force, meeting the testing environment required by the testing mechanism.

[0016] The testing mechanism can be adjusted according to the standard position degree of the oil hole, can meet the testing requirements of multiple oil holes by one testing mechanism, or can also use multiple testing mechanisms to simultaneously test multiple oil holes. It is flexible, practical, and easy to operate, enabling the testing mechanism to be applicable to the detection of the position degree of oil holes of crankshafts of various specifications;

[0017] (2) By setting the fixing mechanism and the testing mechanism in the present application, the operator only needs to perform the insertion and extraction actions of the testing rod to realize the detection of the position degree of the oil hole, simplifying the operation of the operator, thereby shortening the detection cycle of the oil hole position degree detecting tool and improving the detection efficiency.

[0018] It should be understood that the content described in the invention content part is not intended to limit the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes, and advantages of the present application will become more obvious:

[0020] Figure 1 It is a schematic structural diagram of an oil hole position degree detecting tool provided by an embodiment of the present application.

[0021] Reference numerals in the figure: 1, support frame; 2, fixing mechanism; 3, detection mechanism;

[0022] 11, end frame; 12, sliding rod; 13, scale; 14, scale mark;

[0023] 21, movable rod; 22, support plate; 23, spring; 24, limiting plate; 25, support groove;

[0024] 31, slider; 32, rotating shaft; 33, detection rod; 34, limiting ball. Detailed implementation manners

[0025] The following further describes the present application in detail with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related application, rather than limiting the application. Additionally, it should be noted that, for the sake of convenience of description, only the parts related to the application are shown in the drawings.

[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present application in detail with reference to the drawings and embodiments.

[0027] Please refer to Figure 1 , an embodiment of the present application provides an oil hole position gauge, including a support frame 1, a fixing mechanism 2 and a detection mechanism 3;

[0028] The support frame 1 includes an end frame 11 and a sliding rod 12; two end frames 11 are symmetrically arranged along the length direction of the support frame 1; a sliding rod 12 is fixedly arranged between the tops of the two end frames 11 along the length direction of the support frame 1; both ends of the sliding rod 12 in the axial direction are fixedly connected to the two end frames 11 respectively; two sliding rods 12 are symmetrically arranged along the width direction of the support frame 1;

[0029] A fixing mechanism 2 for fixing the crankshaft is installed between the bottoms of the two end frames 11; the fixing mechanism 2 includes a movable rod 21, a support plate 22 and a spring 23;

[0030] A detection mechanism 3 for detecting the oil hole position is installed on the two sliding rods 12 together; the detection mechanism 3 includes a slider 31, a rotating shaft 32 and a detection rod 33.

[0031] In this embodiment, the fixing mechanism 2 has a simple structure, is convenient and practical, can be applied to crankshafts of various specifications, and after clamping the crankshaft, the position of the crankshaft is fixed and does not shake under the influence of non-external forces, meeting the detection environment required by the detection mechanism 3. The detection mechanism 3 can be adjusted according to the standard position degree of the oil hole, can meet the detection requirements of multiple oil holes by one detection mechanism 3, or multiple detection mechanisms 3 can be used to simultaneously detect multiple oil holes, which is flexible, practical and easy to operate, enabling the detection mechanism 3 to be applicable to the detection of the position degree of oil holes of crankshafts of various specifications.

[0032] In other embodiments, a limiting mechanism is provided on the support frame 1 to assist the fixing mechanism 2 and limit the rotation of the crankshaft during the detection work.

[0033] In a preferred embodiment, a movable rod 21 is disposed through the middle of the bottom end of the end frame 11 along the length direction of the support frame 1; the movable rod 21 is slidably connected to the corresponding end frame 11 along the length direction of the support frame 1; support plates 22 are fixedly disposed on the opposite surfaces of the two movable rods 21, and limiting plates 24 are fixedly disposed on the opposite surfaces; a spring 23 is installed between the support plate 22 and the corresponding end frame 11; both ends of the spring 23 are fixedly connected to the adjacent support plate 22 and the adjacent end frame 11 respectively; a support groove 25 is fixedly formed at the top end of the support plate 22.

[0034] Please refer to Figure 1 , in this embodiment, the fixing mechanism 2 is used to fix the crankshaft, limit the position of the crankshaft after placement, and prevent it from moving or shaking during the detection work and affecting the detection. The movable rod 21 is slidably connected to the corresponding end frame 11 along the length direction of the support frame 1, with a support plate 22 provided at one end and a limiting plate 24 provided at the other end. A spring 23 is provided between the support plate 22 and the end frame 11. The limiting plate 24 is used to prevent the movable rod 21 from detaching from the end frame 11, and the support groove 25 is used to support the main journal of the crankshaft.

[0035] When fixing the crankshaft: move the two support plates 22 away from each other. At this time, both springs 23 contract and accumulate elastic force. Place the two main journals of the crankshaft in the two support grooves 25, rotate and adjust the crankshaft, and then release the two support plates 2. The two springs 23 elongate due to the reset effect, causing the two support plates 22 to act on each other to clamp the crankshaft, and thus the fixing of the crankshaft can be completed. After fixing, the crankshaft does not shake or rotate. The fixing mechanism 2 has a simple structure, is convenient and practical. After clamping the crankshaft, the position of the crankshaft is fixed and does not shake under the influence of non-external forces, meeting the detection environment required by the detection mechanism.

[0036] In a preferred embodiment, two sliders 31 within the same detection mechanism 3 are symmetrically arranged along the width direction of the support frame 1; the slider 31 is slidably connected to the adjacent slide bar 12; a rotating shaft 32 is rotatably arranged between the two sliders 31; the axial direction of the rotating shaft 32 is parallel to the width direction of the support frame 1; both ends of the rotating shaft 32 along the axial direction are rotatably connected to the two sliders 31 respectively; a detection rod 33 is arranged through the middle of the rotating shaft 32 along the diameter direction along the axial direction; the detection rod 33 is arranged as a cylinder and is movably connected to the rotating shaft 32.

[0037] Please refer to Figure 1 , in this embodiment, before detecting the position degree of the oil hole, it is necessary to first determine the position degree (i.e., the standard position degree) of the oil hole in the design scheme according to the specifications and design scheme of the crankshaft: fix the standard part on the fixing mechanism 2, make the orifice of the oil hole to be determined vertically upward, slide the slider 31 along the direction of the slide bar 12 and rotate the rotating shaft 32 according to the standard position degree of the oil hole, so that the axis of the detection rod 33 coincides with the axis of the oil hole in the design scheme, record the position of the slider 31, and record the rotation angle of the rotating shaft 32. According to the detection requirements, determine the standard position degree of each oil hole one by one, and record the corresponding position of the slider 31 and the rotation angle of the rotating shaft 32.

[0038] In a preferred embodiment, one or more detection mechanisms 3 are arranged along the axial direction of the slide bar 12.

[0039] Please refer to Figure 1 , in this embodiment, multiple detection mechanisms 3 can simultaneously detect the position degrees of multiple oil holes.

[0040] In a preferred embodiment, a limiting ball 34 is fixedly arranged at the top end of the detection rod 33.

[0041] Please refer to Figure 1 , in this embodiment, the limiting ball 34 plays a limiting role to prevent the detection rod 33 from detaching from the rotating shaft 32 when moving downward.

[0042] In a preferred embodiment, a scale 13 is arranged along the length direction on the top surface of the support frame 1; both ends of the scale 13 along the length direction are fixedly connected to the top ends of the two end frames 11 respectively; a scale 14 is arranged on one side of the slider 31 along the width direction of the support frame 1 close to the fixing mechanism 2.

[0043] Please refer to Figure 1 , in this embodiment, the scale 13 is used to observe the position of the slider 31 for convenient data recording, and the scale 14 is used to observe the rotation angle of the rotating shaft 32 for convenient data recording.

[0044] The working principle of this application:

[0045] After the crankshaft is machined, the crankshaft is installed and fixed on the fixing mechanism 2, so that the two support plates 22 move away from each other. At this time, both springs 23 contract and accumulate elastic force. The main journals at both ends of the crankshaft are placed in the two support grooves 25, and the crankshaft is rotated and adjusted to make the orifice of the oil hole to be detected face vertically upward for convenient measurement. According to the relevant recorded data of the oil hole to be detected, the slider 31 is slid along the slide rod 12 to the recording position, and the rotating shaft 32 is rotated according to the recorded data. Then, the movable detection rod 33 is moved to insert it into the oil hole. If the detection rod 33 can pass through the oil hole smoothly, the positional tolerance (i.e., the actual positional tolerance) of the actually machined oil hole matches the standard positional tolerance, and it can be determined that the machining of this oil hole of the crankshaft is qualified; if the detection rod 33 abuts against the side wall of the oil hole and gets stuck, resulting in the detection rod being unable to pass through the oil hole, then the actual positional tolerance of the oil hole does not match the standard positional tolerance, and it can be determined that the machining of this oil hole of the crankshaft is unqualified. Then, the crankshaft is adjusted to make the orifice of the next oil hole to be detected face vertically upward, and measurement can be carried out.

[0046] In the description of this specification, terms such as "connection", "installation", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it 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 this application can be understood according to specific circumstances.

[0047] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0048] The above are only the preferred embodiments of this application and are not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application should be included in the protection scope of this application.

Claims

1. An oil hole position inspection tool, characterized in that: It includes a support frame, a fixing mechanism and a detection mechanism; The support frame includes an end frame and a sliding rod; two end frames are symmetrically arranged along the length direction of the support frame; the sliding rod is fixedly arranged between the top ends of the two end frames along the length direction of the support frame; the two ends of the sliding rod along the axial direction are respectively fixedly connected to the two end frames; two sliding rods are symmetrically arranged along the width direction of the support frame; The fixing mechanism is installed between the bottom ends of the two end frames for fixing the crankshaft; the fixing mechanism includes a movable rod, a support plate and a spring; The detection mechanism is installed on the two slide bars and is used for detecting the position of the oil hole; the detection mechanism includes a slide bar, a rotating shaft and a detection rod.

2. The oil hole position measuring tool according to claim 1, characterized in that: The movable rod is provided at the middle part of the bottom end of the end frame along the length direction of the support frame; the movable rod and the corresponding end frame are slidably connected along the length direction of the support frame; the supporting plates are fixedly provided on the opposite sides of the two movable rods, and the limiting plates are fixedly provided on the opposite back sides; the spring is installed between the supporting plate and the corresponding end frame; the two ends of the spring are respectively fixedly connected to the adjacent supporting plate and the adjacent end frame; the top end of the support plate is fixedly provided with a supporting groove.

3. The oil hole position measuring tool according to claim 2, characterized in that: Two sliders are symmetrically arranged in the same detection mechanism along the width direction of the support frame; the sliders are slidably connected to the adjacent sliding rods; the rotating shaft is rotatably arranged between the two sliders; the axial direction of the rotating shaft is parallel to the width direction of the support frame; the two ends of the rotating shaft along the axial direction are rotatably connected to the two sliders respectively; the detection rod is penetrated through the middle part of the rotating shaft along the axial direction along the diameter direction; the detection rod is set as a cylinder and is movably connected to the rotating shaft.

4. The oil hole position measuring tool according to claim 3, characterized in that: The detection mechanism is provided in single or multiple forms along the axis direction of the slide bar.

5. The oil hole position measuring tool according to claim 4, characterized in that: A limiting ball is fixedly arranged on the top end of the detection rod.

6. The oil hole position measuring tool according to claim 5, characterized in that: A ruler is arranged on the top surface of the support frame along the length direction; both ends of the ruler along the length direction are respectively fixedly connected to the top ends of the two end frames; and a scale is arranged on one side of the slider close to the fixing mechanism along the width direction of the support frame.

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