Rapid testing fixture for curvature of camshaft blank

Abstract

The utility model discloses a rapid testing fixture for the curvature of a camshaft blank, which relates to the technical field of engine part production, and comprises a side plate, an adjusting mechanism is arranged on the inner side of the side plate, the adjusting mechanism comprises a fixed plate, the fixed plate is fixed on the inner side of the side plate, and the fixed plate is fixed on the inner side of the side plate. A connecting rod is inserted into the fixing plate, the surface of the connecting rod is sleeved with a measuring rod, a rotating block is fixed to the bottom end of the connecting rod, a fixing block is fixed to the surface of the measuring rod, and a stand column is fixed to the surface of the fixing plate. According to the utility model, the fixed plate and the connecting rod are arranged and are matched with the measuring rod and the rotating block, so that the device can rapidly detect the curvature of the camshaft, the camshaft is placed in the strip-shaped through hole of the side edge plate, then the camshaft is rotated, and the curvature is unqualified when the camshaft is rotated and hits the measuring rod. The detection efficiency of the device is improved.

Description

Technical Field

[0001] This application relates to the field of engine parts manufacturing technology, specifically to a rapid inspection tool for the bending degree of camshaft blanks. Background Technology

[0002] The camshaft is a component in a piston engine. Its function is to control the opening and closing of the valves. Although the camshaft rotates at half the speed of the crankshaft in a four-stroke engine (while in a two-stroke engine it rotates at the same speed), its speed is usually still very high, and it needs to withstand a large torque. Therefore, the design of the camshaft places high demands on its strength and support, and its material is generally high-quality alloy steel or alloy steel. Because the valve movement pattern affects the power and operating characteristics of an engine, camshaft design plays a very important role in the engine design process.

[0003] The applicant discovered through a search that a Chinese patent discloses a "rapid inspection tool for the bending degree of a camshaft blank," with publication number "CN212620442U." This patent mainly uses a testing platform, a measuring bar, and an inspection bar. The testing platform has a horizontal rolling plane for the camshaft to roll. The measuring bar is set on the testing platform and is perpendicular to the rolling plane, with scale lines marked on it. The inspection bar is horizontally mounted on the measuring bar, forming a verification height space between the inspection bar and the rolling plane for the camshaft blank to roll into. The height of the inspection bar from the rolling plane is equal to the maximum allowable height of the camshaft blank journal. The spacing between each inspection bar matches the position of each journal of the camshaft blank. During testing, each journal of the camshaft blank corresponds to one inspection bar. This invention provides a rapid inspection tool that simply rolls the camshaft on a rolling plane. By observing whether the camshaft blank can roll into the verification height space, it can quickly determine whether the bending degree of the camshaft blank is out of tolerance. The operation process is simple, the inspection efficiency is high, and it is suitable for large-scale inspection. However, existing devices still have shortcomings. Existing devices are not efficient in rapidly inspecting camshaft blanks. They require setting up a horizontal rolling surface and using an inspection bar for inspection, which is quite troublesome. Furthermore, the existing devices have insufficient adjustment mechanisms, making it difficult to adjust for inspection of camshaft blanks of different sizes, and requiring inspection tools of various specifications. Summary of the Invention

[0004] To address this, this application provides a rapid inspection tool for the bending degree of camshaft blanks, thereby solving the problems of insufficient efficiency in detecting the bending degree of camshaft blanks and inadequate adjustment mechanisms for camshafts of different sizes in the existing technology.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] Firstly, a quick inspection tool for the bending degree of a camshaft blank includes a side plate. An adjustment mechanism is provided on the inner side of the side plate. The adjustment mechanism includes a fixed plate, which is fixed to the inner side of the side plate. A connecting rod is inserted into the inside of the fixed plate, and a measuring rod is sleeved on the surface of the connecting rod. A rotating block is fixed to the bottom end of the connecting rod, a fixing block is fixed to the surface of the measuring rod, and a column is fixed to the surface of the fixed plate.

[0007] Optionally, the side plate has a groove inside that matches the fixing block, and the fixing block is inserted inside the side plate to prevent the measuring rod from rotating.

[0008] Optionally, the side plate has oblique strip-shaped through holes inside, and two sets of these through holes are provided facing each other to facilitate the insertion of the camshaft.

[0009] Optionally, the fixing plate has a threaded hole inside, and the surface of the connecting rod has a thread that matches the threaded hole of the fixing plate. The connecting rod is threadedly connected to the fixing plate, which facilitates the adjustment of the measuring rod height.

[0010] Optionally, a measuring rod is sleeved on the surface of the connecting rod, and the connecting rod is connected to the measuring rod bearing to facilitate adjustment of the height of the measuring rod.

[0011] Optionally, two sets of measuring rods are arranged vertically, and two sets of measuring rods are symmetrically arranged on both sides of the side plate to facilitate the detection of camshaft bending.

[0012] Optionally, the rotating block is fixed to the surface of the connecting rod, and the surface of the rotating block is provided with arc-shaped grooves at equal intervals to facilitate the rotation of the rotating block.

[0013] Optionally, the surface of the column is provided with a scale, and two sets of the column are symmetrically arranged to facilitate the digital adjustment of the height of the measuring rod.

[0014] Compared with the prior art, this application has at least the following beneficial effects:

[0015] 1. The device is equipped with a fixed plate and a connecting rod, which, together with the measuring rod and the rotating block, enable the device to quickly detect the bending degree of the camshaft. The camshaft is placed into the strip-shaped through hole of the side plate, and then the camshaft is rotated. When the camshaft strikes the measuring rod, the bending degree is unqualified. This rapid detection method improves the detection efficiency of the device.

[0016] 2. The device is equipped with a fixed plate and a connecting rod, which, together with the measuring rod and the rotating block, allow the device to adjust the detection distance according to the size of the camshaft. By rotating the rotating block, the measuring rod can be moved and its height adjusted. When encountering camshafts of different sizes, the height of the measuring rod can be adjusted to detect whether the camshaft is bent, thus improving the working efficiency of the device. Attached Figure Description

[0017] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0018] Figure 1 This is a side-view perspective structural diagram of a rapid inspection tool for the bending degree of a camshaft blank provided in one embodiment of this application;

[0019] Figure 2 This is a schematic cross-sectional view of the side plate of a camshaft blank bending quick inspection tool provided in one embodiment of this application.

[0020] Figure 3 A schematic cross-sectional view of the fixing plate for a quick inspection tool for the bending degree of a camshaft blank provided in one embodiment of this application;

[0021] Figure 4 This is a top view schematic diagram of the structure of a rapid inspection tool for the bending degree of a camshaft blank provided in one embodiment of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] In the diagram: 1. Side plate; 2. Adjustment mechanism; 210. Fixing plate; 220. Connecting rod; 230. Measuring rod; 240. Rotating block; 250. Fixing block; 260. Column. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0025] like Figures 1 to 4 As shown, the camshaft blank bending quick inspection tool in the first aspect embodiment of this utility model includes a side plate 1, an adjustment mechanism 2 is provided on the inner side of the side plate 1, the adjustment mechanism 2 includes a fixing plate 210, the fixing plate 210 is fixed on the inner side of the side plate 1, a connecting rod 220 is inserted inside the fixing plate 210, and a measuring rod 230 is sleeved on the surface of the connecting rod 220. A rotating block 240 is fixed at the bottom end of the connecting rod 220, a fixing block 250 is fixed on the surface of the measuring rod 230, and a column 260 is fixed on the surface of the fixing plate 210. The side plate 1 has oblique strip-shaped through holes, and two sets of strip-shaped through holes are opened opposite each other. Two sets of measuring rods 230 are arranged vertically and vertically, and two sets of measuring rods 230 are symmetrically arranged on both sides of the side plate 1.

[0026] The technical effect achieved by the above embodiment is as follows: the camshaft blank is placed into the oblique strip-shaped through hole of the side plate 1. After the camshaft blank is placed into the side plate 1, its two sides protrude from the surface of the strip-shaped through hole of the side plate 1. Then, the protruding parts of the camshaft on both sides are rotated to make the camshaft rotate. The part of the camshaft that is not in good condition due to bending will hit the measuring rod 230. Then the initial inspection of the bending degree of the camshaft blank will fail. The position of the measuring rod 230 is pre-adjusted. It is pre-moved to a place where the normal camshaft rotation cannot hit it, but it is close to the surface of the camshaft. In this way, if the bending degree of the camshaft is problematic, it will hit the measuring rod 230 when rotating. The measuring rod 230 is set on both sides of the side plate 1 and on both sides of the strip-shaped through hole on the side plate 1. When the user is checking the bending degree of the camshaft, he / she can stand on both sides of the side plate 1 to check different camshaft blanks at the same time, which improves the efficiency of rapid pre-inspection of camshaft blanks. Example

[0027] like Figures 1 to 4 As shown, the camshaft blank bending quick inspection tool includes all the contents of Embodiment 1. In addition, the side plate 1 is provided with a sliding groove adapted to the fixing block 250. The fixing block 250 is inserted into the side plate 1. The fixing plate 210 is provided with a threaded hole. The surface of the connecting rod 220 is provided with a thread adapted to the threaded hole of the fixing plate 210. The connecting rod 220 is threadedly connected to the fixing plate 210. The surface of the connecting rod 220 is sleeved with a measuring rod 230. The connecting rod 220 and the measuring rod 230 are connected by a bearing. The rotating block 240 is fixed on the surface of the connecting rod 220. The surface of the rotating block 240 is provided with arc-shaped grooves at equal intervals. The surface of the column 260 is provided with a scale. Two sets of columns 260 are symmetrically arranged.

[0028] The technical effects achieved by the above embodiment are as follows: When the rotating block 240 is rotated, the connecting rod 220 will rotate. The connecting rod 220 is threadedly connected to the fixing plate 210, and the connecting rod 220 will move up and down. Since the fixing block 250 limits the measuring rod 230, the measuring rod 230 will move up and down with the connecting rod 220. According to the normal rotation trajectory of the camshaft, the position of the measuring rod 230 is preset so that the measuring rod 230 will be close to the camshaft, but will not be hit when the camshaft rotates. Thus, the device can perform pre-inspection of the bending degree of camshaft blanks of different sizes. By observing the scale on the column 260, the adjustment height of the measuring rod 230 can be digitally quantified, which facilitates the adjustment of the measuring rod 230.

[0029] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A quick inspection tool for the bending degree of a camshaft blank, comprising a side plate (1), characterized in that, An adjustment mechanism (2) is provided on the inner side of the side plate (1). The adjustment mechanism (2) includes a fixing plate (210). The fixing plate (210) is fixed on the inner side of the side plate (1). A connecting rod (220) is inserted inside the fixing plate (210), and a measuring rod (230) is sleeved on the surface of the connecting rod (220). A rotating block (240) is fixed at the bottom end of the connecting rod (220). A fixing block (250) is fixed on the surface of the measuring rod (230). A column (260) is fixed on the surface of the fixing plate (210).

2. The quick inspection tool for the bending degree of camshaft blanks according to claim 1, characterized in that, The side plate (1) is provided with a sliding groove that is adapted to the fixing block (250), and the fixing block (250) is inserted into the side plate (1).

3. The quick inspection tool for the bending degree of camshaft blanks according to claim 1, characterized in that, The side plate (1) has oblique strip-shaped through holes inside, and two sets of strip-shaped through holes are opened opposite each other.

4. The quick inspection tool for the bending degree of camshaft blanks according to claim 1, characterized in that, The fixed plate (210) has a threaded hole inside, and the surface of the connecting rod (220) is provided with a thread that matches the threaded hole of the fixed plate (210). The connecting rod (220) is threadedly connected to the fixed plate (210).

5. The quick inspection tool for the bending degree of camshaft blanks according to claim 1, characterized in that, The surface of the connecting rod (220) is fitted with a measuring rod (230), and the connecting rod (220) is connected to the measuring rod (230) by a bearing.

6. The quick inspection tool for the bending degree of camshaft blanks according to claim 1, characterized in that, The measuring rod (230) is arranged in two sets at the top and bottom, and the measuring rod (230) is arranged symmetrically on both sides of the side plate (1).

7. The quick inspection tool for the bending degree of camshaft blanks according to claim 1, characterized in that, The rotating block (240) is fixed on the surface of the connecting rod (220), and the surface of the rotating block (240) is provided with arc-shaped grooves at equal intervals.

8. The quick inspection tool for the bending degree of camshaft blanks according to claim 1, characterized in that, The surface of the column (260) is provided with a scale, and two sets of columns (260) are symmetrically arranged.

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