A rapid inspection device for measuring the depth of angled holes

Abstract

The utility model relates to the testing tool of ball nut mainly for the depth inspection of ball nut reverser hole. The precision of ball screw pair of key transmission parts in new energy automobile industry directly influences the NVH of whole car. The processing quality of ball screw reverser hole has important influence, and the traditional depth detection efficiency is low, and the repeatability is poor, and the equipment detection cost is higher. A kind of fast testing device for measuring angle hole depth, bottom plate is provided with gauge by fixed mechanism, gauge is provided with measuring pin, measuring pin is inserted into the hole of workpiece to measure;Adjusting mechanism is provided on the bottom plate, adjusting mechanism is provided with sector cloud platform base, sector cloud platform base is provided with sector cloud platform, rotating mechanism is provided on sector cloud platform base and sector cloud platform, sector cloud platform is connected with installation base, and multiple-direction positioning and fixed workpiece are provided on installation base. Structure is reasonable, and gauge measuring pin reaches detection position quickly and displays measurement reading;Detection method is simple to operate, and time consumption is less, and cost is reduced, and efficiency is improved.

Description

Technical Field

[0001] This utility model relates to an inspection fixture for ball nuts, mainly used for inspecting the depth of the reverse hole of the ball nut. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the requirements for noise, vibration, and harshness (NVH) performance of vehicles are increasing. The manufacturing precision of ball screw assemblies, a key transmission component, directly affects the NVH performance of the entire vehicle. Among these, the machining quality of the ball screw nut return hole has a significant impact on the smoothness of ball circulation, transmission stability, and noise control; therefore, its machining precision must be strictly controlled. Traditional methods for depth measurement of return hole often employ general-purpose measuring tools (such as various calipers and depth gauges) or coordinate measuring machines. The former has low measurement efficiency and poor repeatability, making it difficult to meet high-precision control requirements; the latter, while highly accurate, is expensive, complex to operate, and has high testing costs, making it difficult to meet the rapid testing requirements after mass production. Traditional testing methods are no longer adequate for the demands of high-precision and high-efficiency testing. Therefore, there is an urgent need to develop a dedicated inspection tool for the depth of the ball screw nut return hole, capable of rapid positioning and measurement, and possessing high repeatability and stability to meet the needs of efficient and high-precision component testing. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a low-cost, high-efficiency testing solution that can be placed on the production site for immediate use, helping employees and inspectors to quickly confirm the quality of products. This is a rapid testing device for measuring the depth of angled holes.

[0004] A rapid inspection device for measuring the depth of angled holes includes a base plate and a workpiece. A measuring instrument is mounted on one side of the base plate via a fixing mechanism, and a measuring stylus is mounted on the measuring instrument. The measuring stylus extends into the hole of the workpiece to perform measurement. An adjustment mechanism is mounted on the other side of the base plate, and a fan-shaped gimbal base is engaged with the adjustment mechanism. A fan-shaped gimbal is rotatably mounted on the fan-shaped gimbal base. A rotating mechanism is provided on the fan-shaped gimbal base and the fan-shaped gimbal. A mounting base is slidably connected to the fan-shaped gimbal, and a workpiece is mounted on the mounting base for multi-directional positioning and fixation.

[0005] This device has a reasonable structure and an adjustable tilt base designed to fit the structural dimensions of the workpiece's reverser hole. After the workpiece is fixed in position, the probe of the instrument quickly reaches the detection position and displays the measurement reading. The detection method is simple to operate and takes less time. It can replace the CMM coordinate measuring machine (CMM) detection method, reducing detection costs and improving detection efficiency.

[0006] As a further improvement and supplement to the above solution, this utility model also includes the following additional technical features:

[0007] The fan-shaped gimbal base is provided with a first arc-shaped groove and a third arc-shaped groove, and the fan-shaped gimbal is provided with an arc-shaped protrusion. The arc-shaped protrusion engages with the first arc-shaped groove to allow for angular rotation. The structure is reasonable and the rotation is flexible.

[0008] The rotating mechanism includes a first gear fitted onto the third arc-shaped groove, an angle adjustment knob passing through the fan-shaped gimbal base, and a second gear at one end of the angle adjustment knob. The first and second gears mesh to adjust the angle of the fan-shaped gimbal. The structure is reasonable, and adjustment is convenient and quick.

[0009] The rear side of the fan-shaped gimbal base is equipped with a tightening screw that abuts against the arc-shaped protrusion for locking the fan-shaped gimbal. The locking is safe and reliable.

[0010] The mounting base has a first groove and a second groove. The first groove is an elongated groove open at both ends, and the second groove is a V-shaped groove. A quadrilateral protrusion is provided on one side of the first groove, which engages with a square groove on the end face of the workpiece. The workpiece is positioned by the first and second grooves. The workpiece is quickly positioned axially by pressing against the bottom plane or end face of the elongated groove; the workpiece is quickly positioned circumferentially by pressing against the side of the elongated groove or other shape features that can be used for circumferential positioning; the positioning and fixing are reasonable.

[0011] The adjustment mechanism includes an interlocking X-axis moving platform and a Y-axis moving platform, driving the fan-shaped gimbal to move in the X and Y directions. The structure is reasonable, and movement is convenient and quick.

[0012] The fan-shaped gimbal is equipped with angle markings, allowing for precise angle adjustments.

[0013] The fixing mechanism includes a meter mounting column fixed to the base plate, and meter fixing brackets distributed on both sides of the meter mounting column. The fixing is stable and reliable.

[0014] The following beneficial effects can be achieved by using this utility model:

[0015] An adjustable tilt base is designed according to the structural dimensions of the reverser hole in the workpiece.

[0016] The workpiece is quickly positioned axially by pressing against the bottom plane or end face of the long groove;

[0017] The workpiece is quickly positioned in the circumferential direction by closely abutting the side of the long groove or other shape features that can be used for circumferential positioning;

[0018] After the workpiece is fixed in position, the probe of the instrument quickly reaches the detection position and displays the measurement reading;

[0019] This device has a reasonable structure and a simple detection method that consumes little time. It can replace the CMM coordinate measuring machine (CMM) detection method, reduce detection costs, and improve detection efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure on the other side of this utility model.

[0022] Figure 3 This is the front view of this utility model.

[0023] Figure 4 This is a top view of the present invention.

[0024] Figure 5 This is the left view of this utility model.

[0025] Figure 6 This is a partial view of the left side of this utility model.

[0026] Figure 7 This is a schematic diagram of the structure of the fan-shaped gimbal base 7 in this utility model.

[0027] Figure 8 This is a schematic diagram of the structure of the fan-shaped gimbal 8 in this utility model.

[0028] Figure 9 This is the front view of the fan-shaped gimbal 8 in this utility model.

[0029] Figure 10 This is a left view of the fan-shaped gimbal 8 in this utility model.

[0030] Figure 11 This is a schematic diagram of the mounting base 9 in this utility model.

[0031] Figure 12 This is a schematic diagram of the structure of workpiece 15 in this utility model.

[0032] Figure 13 This is the front view of workpiece 15 in this utility model.

[0033] Figure 14 This is a top view of workpiece 15 in this utility model. Figure 6 (The cut view shown).

[0034] Figure 15 This is a schematic diagram of the structure of workpiece 15 in this utility model. Detailed Implementation

[0035] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0036] like Figure 1-15 As shown, this utility model is a rapid inspection device for measuring the depth of angled holes.

[0037] The rapid inspection device for measuring the depth of angled holes described in this embodiment includes a base plate 1 and a workpiece 15. A measuring instrument 12 is fixed to one side of the base plate 1 via a fixing mechanism. A measuring stylus 10 is mounted on the measuring instrument 12 and extends into the hole of the workpiece 15 for measurement. An adjustment mechanism is mounted on the other side of the base plate 1, and a fan-shaped gimbal base 7 is engaged with the adjustment mechanism. A fan-shaped gimbal 8 is rotatably mounted on the fan-shaped gimbal base 7. A rotating mechanism is provided on both the fan-shaped gimbal base 7 and the fan-shaped gimbal 8. A mounting base 9 is slidably connected to the fan-shaped gimbal 8, and the workpiece 15 is mounted on the mounting base 9 for multi-directional positioning and fixation. A second protrusion 74 is provided on the fan-shaped gimbal base 7, which engages with a second slot 62 on the Y-moving platform 6. A third slot 81 is provided on the fan-shaped gimbal 8, and a third protrusion 94 is provided on the mounting base 9. The third slot 81 and the third protrusion 94 engage with each other.

[0038] Furthermore, the fan-shaped gimbal base 7 is provided with a first arc-shaped groove 71 and a third arc-shaped groove 73, and the fan-shaped gimbal 8 is provided with an arc-shaped protrusion 82, which engages with the first arc-shaped groove 71 to allow for angular rotation. The fan-shaped gimbal base 7 has a concave arc structure, with the first arc-shaped groove 71 symmetrically distributed on both sides of the concave arc structure, and the third arc-shaped groove 73 located in the middle of one side, with its depth and width both greater than the first arc-shaped groove 71.

[0039] Furthermore, the rotating mechanism includes a first gear 16 fitted onto the third arc-shaped groove 73 and an angle adjustment knob 14 passing through the fan-shaped gimbal base 7. One end of the angle adjustment knob 14 is equipped with a second gear 142, which meshes with the first gear 16 for adjusting the angle of the fan-shaped gimbal 8. The other end of the angle adjustment knob 14 is equipped with a knob 141 with an anti-slip strip. Rotating the second gear 142 then drives the first gear 16 to rotate the fan-shaped gimbal 8 for angle adjustment. The fan-shaped gimbal base 7 also has a second arc-shaped groove 72 located in the middle, with the first gear 16 located inside it. A third arc-shaped groove 73 is located on one side of its bottom.

[0040] Furthermore, the rear side of the fan-shaped gimbal base 7 is provided with a tightening screw 13 that abuts against the arc-shaped protrusion 82 for locking the fan-shaped gimbal 8.

[0041] Furthermore, the mounting base 9 is provided with a first groove 91 and a second groove 92. The first groove 91 is an elongated groove open at both ends, and the second groove 92 is a V-shaped groove. The height of the first groove 91 side is higher than the height of the V-shaped groove side. A quadrilateral protrusion 93 is provided on one side of the first groove 91, which engages with the square groove on the end face of the workpiece 15. The workpiece 15 is positioned by the first groove 91 and the second groove 92. The cylindrical part of the workpiece 15 is positioned on the V-shaped groove, and one end face of the workpiece 15 abuts against the plane on the side of the first groove 91.

[0042] Furthermore, the adjustment mechanism includes an X-moving platform 5 and a Y-moving platform 6 that engage with each other, driving the fan-shaped gimbal 8 to move in the X and Y directions. The X-moving platform 5 is provided with a first slot 51, and the Y-moving platform 6 is provided with a first protrusion 61 and a second slot 62, with the first slot 51 and the first protrusion 61 engaging.

[0043] Furthermore, the fan-shaped gimbal 8 is provided with angle markings.

[0044] Furthermore, the fixing mechanism includes a meter mounting column 2 fixed to the base plate 1, and meter mounting columns 2 are provided with meter fixing brackets 3 distributed on both sides. The two meter fixing brackets 3 are fastened to the meter mounting column 2 by first screws 4, and the meter 12 is installed on the meter fixing brackets 3 by second screws 11.

[0045] When using this rapid inspection device for measuring the depth of angled holes, the workpiece 15 is mounted on the mounting base 9, and the mounting base 9 with the workpiece 15 is fixed on the fan-shaped gimbal 8. The position of the workpiece is quickly adjusted using the X-moving platform 5 and the Y-moving platform 6. The fan-shaped gimbal 8 is adjusted to the required tilt angle for measurement using the angle adjustment knob 14. The fan-shaped gimbal 8 is then fixed by tightening the screw 13. The probe 10 of the measuring instrument is released to the measuring part of the workpiece 15, and the measurement value is read. If necessary, the measuring instrument should be calibrated using a standard block before measurement.

[0046] The above are preferred embodiments of the present utility model and do not limit the scope of protection of the present utility model. Any modifications and improvements made by those skilled in the art based on the design concept of the present utility model should be considered within the scope of protection of the present utility model.

Claims

1. A rapid inspection device for measuring the depth of angled holes, comprising a base plate (1) and a workpiece (15), characterized in that: A measuring instrument (12) is provided on one side of the base plate (1) through a fixing mechanism. A measuring needle (10) is provided on the measuring instrument (12). The measuring needle (10) is inserted into the hole of the workpiece (15) for measurement. An adjustment mechanism is provided on the other side of the base plate (1). A fan-shaped gimbal base (7) is clamped on the adjustment mechanism. A fan-shaped gimbal (8) is rotatably provided on the fan-shaped gimbal base (7). A rotating mechanism is provided on the fan-shaped gimbal base (7) and the fan-shaped gimbal (8). A mounting base (9) is slidably connected to the fan-shaped gimbal (8). A workpiece (15) with multi-directional positioning and fixing is provided on the mounting base (9).

2. The rapid inspection device for measuring the depth of angled holes as described in claim 1, characterized in that: The fan-shaped gimbal base (7) is provided with a first arc-shaped groove (71) and a third arc-shaped groove (73), and the fan-shaped gimbal (8) is provided with an arc-shaped protrusion (82). The arc-shaped protrusion (82) engages with the first arc-shaped groove (71) to rotate the angle.

3. The rapid inspection device for measuring the depth of angled holes as described in claim 2, characterized in that: The rotating mechanism includes a first gear (16) sleeved on the third arc-shaped groove (73) and an angle adjustment knob (14) passing through the fan-shaped gimbal base (7). One end of the angle adjustment knob (14) is provided with a second gear (142). The first gear (16) and the second gear (142) mesh for adjusting the angle of the fan-shaped gimbal (8).

4. The rapid inspection device for measuring the depth of angled holes as described in claim 2, characterized in that: The rear side of the fan-shaped gimbal base (7) is provided with a tightening screw (13) that abuts against the arc-shaped protrusion (82) for locking the fan-shaped gimbal (8).

5. The rapid inspection device for measuring the depth of angled holes as described in claim 1, characterized in that: The mounting base (9) is provided with a first groove (91) and a second groove (92). The first groove (91) is a long groove with openings at both ends, and the second groove (92) is a V-shaped groove. A quadrilateral protrusion (93) is provided on one side of the first groove (91). The quadrilateral protrusion (93) engages with the square groove on the end face of the workpiece (15). The workpiece (15) is positioned by the first groove (91) and the second groove (92).

6. The rapid inspection device for measuring the depth of angled holes as described in claim 1, characterized in that: The adjustment mechanism includes an X-moving platform (5) and a Y-moving platform (6) that engage with each other, driving the fan-shaped gimbal (8) to move in the X and Y directions.

7. The rapid inspection device for measuring the depth of angled holes as described in claim 3, characterized in that: The fan-shaped gimbal (8) is provided with angle markings.

8. The rapid inspection device for measuring the depth of angled holes as described in any one of claims 1-7, characterized in that: The fixing mechanism includes a meter mounting column (2) fixed on the base plate (1), and meter mounting columns (2) are provided with meter fixing brackets (3) distributed on both sides.

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