Device for detecting verticality of screw pin hole of automobile steering device

Abstract

The utility model relates to a detection device, in particular to a device for detecting the perpendicularity of a screw pin hole of an automobile steering device. The detection device comprises a supporting frame, a large-end tip and a small-end tip, and is characterized in that the supporting frame is in an inverted U shape, the large-end tip is inserted into the bottom end of the supporting frame, and the small-end tip is inserted into the top end of the supporting frame; the detection device further comprises a measuring bar and a dial indicator. The detection device can measure the perpendicularity of the pin hole through the deviation of the measuring bar inserted into the pin hole, can effectively simplify the measurement, reduce the measurement difficulty, quickly measure, effectively improve the detection frequency and the detection efficiency, and can be applied to the quick detection in the machining process, so that the comprehensive detection can be carried out, the missing detection is avoided, and the qualification of the perpendicularity of the pin hole is ensured. And the product quality is ensured. The problems that an existing three-coordinate detector is low in detection frequency and efficiency and not suitable for full detection are solved.

Description

Technical Field

[0001] The utility model relates to a detection device, in particular to a detection device for the perpendicularity of the pin holes of the screw of an automotive steering gear. Background Art

[0002] The pin holes on the screw, which is one of the components of the automotive steering gear, as the key process dimension, the perpendicularity relative to the center hole axis is marked as φ0.1. After processing, it is necessary to confirm whether the perpendicularity is qualified. When the perpendicularity of the pin holes on the screw is unqualified, during the working process of the screw, abnormal noises are likely to occur. Seriously, it will lead to inability to assemble, resulting in the scrapping of the screw.

[0003] When detecting the perpendicularity of the screw pin holes, generally a three-coordinate measuring instrument is used for detection. The three-coordinate measuring instrument needs to scan the center holes at both ends of the screw to establish the axis, and at the same time needs to scan deep into the pin holes to detect the perpendicularity of the pin holes. It takes too much time, and the inspection frequency cannot meet the requirements. It cannot be detected quickly and can only be sampled for detection. In the case where all detections cannot be carried out, it brings great difficulties to the detection during the processing process, and in the case where full inspection cannot be carried out, it is easy to miss defective products. Therefore, it is necessary to design a detection device for the perpendicularity of the screw pin holes of an automotive steering gear to solve the above problems. Summary of the Invention

[0004] The purpose of the utility model is to provide a detection device for the perpendicularity of the screw pin holes of an automotive steering gear, which can improve the detection efficiency, can perform full inspection, can quickly detect during the processing process, and ensure the processing quality.

[0005] The technical solution of the utility model is as follows:

[0006] A detection device for the perpendicularity of the screw pin holes of an automotive steering gear, including a support frame, a large-end center point, and a small-end center point. It is characterized in that: the support frame is in an inverted "U" shape, the bottom end of the support frame is inserted with a large-end center point, and the top end of the support frame is inserted with a small-end center point; the detection device also includes a measuring rod inserted into the screw pin hole and a micrometer for measuring the height of the measuring point of the measuring rod.

[0007] A gland is installed on the support frame through a fixing bolt, and the gland is sleeved and connected with the top end of the small-end center point; a shoulder is provided on the small-end center point, and a spring is sleeved on the small-end center point between the shoulder and the gland.

[0008] A handle is movably installed on the support frame below the gland through a pin shaft; a connecting groove is provided on the small-end center point below the shoulder, and the connecting groove is movably connected with the end of the handle.

[0009] A hook groove is provided at the top of the end of the handle on one side of the small-end center point.

[0010] Further, a guide rod is movably installed on the support frame on one side of the large-end center by a transverse slide rail. A lifting groove is provided on the guide rod, and an extension rod is installed on the lifting groove through a locking bolt. A measuring rod is installed on the end of the extension rod by threading.

[0011] A spirit level is movably installed on the guide rod above the extension rod by a longitudinal slide rail. Measuring scales are movably inserted into both ends of the spirit level respectively, and graduations are provided on the measuring scales.

[0012] The beneficial effects of the present utility model are as follows:

[0013] The detection device for the perpendicularity of the screw pin hole of the vehicle steering gear can measure the perpendicularity of the pin hole through the offset of the measuring rod inserted into the pin hole, which can effectively simplify the measurement, reduce the measurement difficulty, can quickly measure, effectively improve the detection frequency and detection efficiency, so that it can be applied to the rapid detection in the processing process, thus enabling comprehensive detection, ensuring no missed detection, ensuring the qualified perpendicularity of the pin hole, and further ensuring the product quality. It solves the problems of low detection frequency and efficiency of the existing coordinate measuring machine and its inapplicability to full inspection. Description of the Drawings

[0014] Figure 1 is a schematic structural view of the present utility model;

[0015] Figure 2 is a schematic structural view of the small-end center of the present utility model;

[0016] Figure 3 is a schematic structural view of the handle of the present utility model;

[0017] Figure 4 is a connection schematic view of the extension rod of the present utility model.

[0018] In the figure: 1, support frame; 2, large-end center; 3, small-end center; 4, measuring rod; 5, micrometer; 6, gland; 7, shoulder; 8, spring; 9, handle; 10, connection groove; 11, hook groove; 12, transverse slide rail; 13, guide rod; 14, lifting groove; 15, locking bolt; 16, extension rod; 17, longitudinal slide rail; 18, spirit level; 19, measuring scale; 20, graduation; 21, screw. Detailed Embodiments Embodiment 1

[0019] The detection device for the perpendicularity of the pin hole of the steering gear screw of an automobile includes a support frame 1, a large-end center point 2 and a small-end center point 3. The support frame 1 is in an inverted "U" shape. The bottom end of the support frame 1 is inserted with the large-end center point 2 so that the tip of the large-end center point 2 is inserted into the center hole of the large-diameter end of the screw. The top end of the support frame 1 is inserted with the small-end center point 3 so that the tip of the small-end center point 3 is inserted into the center hole of the small-diameter end of the screw, thereby cooperating with the large-end center point 3 to fix the screw and making the central axis of the screw vertically upward. The detection device also includes a gauge rod 4 inserted into the pin hole of the screw and a micrometer 5 for measuring the height of the measuring point of the gauge rod 4. Since the central axis of the screw is vertically upward, the perpendicularity of the pin hole can be measured by measuring the deviation between the pin hole and the horizontal direction. By measuring the deviation between the gauge rod 4 inserted into the pin hole and the horizontal direction, the measurement of the pin hole can be extended to the outside of the pin hole, which can greatly facilitate the measurement. The micrometer 5 can measure the heights of the measuring points (at least two spaced measuring points, such as Figure 1 points A and B in

[0020] on the circumferential top of the gauge rod 4 at multiple places), so that the deviation between the gauge rod 4 and the horizontal direction can be calculated through the height difference of the measuring points at multiple places of the gauge rod 4, and then the perpendicularity of the pin hole can be calculated. Since the direction of the central axis of the screw is fixed in advance in this measurement method, it is not necessary to measure and confirm the central axis of the screw, which can effectively simplify the measurement, and thus can quickly perform the measurement and effectively improve the measurement frequency and efficiency.

[0021] A gland 6 is installed on the support frame 1 through a fixing bolt, and the gland 6 is sleeved and connected with the top end of the small-end center point 3; a shoulder 7 is arranged on the small-end center point 3, and a spring 8 is sleeved on the small-end center point 3 between the shoulder 7 and the gland 6. The function of the gland 6 is to limit and straighten the small-end center point 3 through the gland 6, so as to accurately limit the position of the end of the screw through the small-end center point 3 and make the screw vertically upward. The function of the spring 8 is to press down the small-end center point 3 through the elastic force of the spring 8 itself, so as to maintain the inserted state of the small-end center point 3 on the screw, and further maintain the vertically upward state of the screw.

[0022] A handle 9 is movably installed on the support frame 1 below the gland 6 through a pin shaft; a connecting groove 10 is arranged on the small-end center point 3 below the shoulder 7, and the connecting groove 10 is movably connected with the end of the handle 9. The function of the handle 9 is to pry the small-end center point 3 through the handle 9 to lift the small-end center point 3, so that the screw can be placed below the small-end center point 3 and the small-end center point 3 can be inserted into the screw.

[0023] When the detection device for the perpendicularity of the pin hole of the steering gear screw of the vehicle is in detection, the large-diameter end of the screw is sleeved on the large-end center point 2; the handle 9 is pressed down, and the handle 9 rotates around the pin shaft, lifting the small-end center point 3 against the elastic force of the spring 8. The end of the small-diameter end of the screw is placed below the lifted small-end center point 3, and the handle 9 is slowly released to insert the small-end center point 3 into the center hole of the small-diameter end of the screw. The screw is vertically fixed on the support frame 1 by the cooperation of the small-end center point 3 and the large-end center point 2. After the screw is fixed, the measuring rod 4 is inserted into the pin hole of the screw. After the measuring rod 4 is inserted in place, the height of the measuring rod 4 is measured at multiple measurement points selected on the measuring rod 4 by the dial indicator 5, and the perpendicularity of the pin hole is calculated through the height difference at each part of the measuring rod 4. Embodiment 2

[0024] The detection device for the perpendicularity of the pin hole of the steering gear screw of the vehicle includes a support frame 1, a large-end center point 2 and a small-end center point 3. The support frame 1 is in an inverted "U" shape, and the bottom end of the support frame 1 is inserted with the large-end center point 2 so that the pointed end of the large-end center point 2 is inserted into the center hole of the large-diameter end of the screw. The top end of the support frame 1 is inserted with the small-end center point 3 so that the pointed end of the small-end center point 3 is inserted into the center hole of the small-diameter end of the screw, thereby cooperating with the large-end center point 3 to fix the screw and making the central axis of the screw vertically upward.

[0025] A gland 6 is installed on the support frame 1 through a fixing bolt, and the gland 6 is sleeved and connected with the top end of the small-end center point 3; a shoulder 7 is arranged on the small-end center point 3, and a spring 8 is sleeved on the small-end center point 3 between the shoulder 7 and the gland 6. The function of the gland 6 is to limit and straighten the small-end center point 3 through the gland 6, thereby accurately limiting the position of the end of the screw through the small-end center point 3 and making the screw vertically upward. The function of the spring 8 is to press down the small-end center point 3 through the elastic force of the spring 8 itself, thereby maintaining the insertion state of the small-end center point 3 into the screw and further maintaining the vertically upward state of the screw.

[0026] A handle 9 is movably installed on the support frame 1 below the gland 6 through a pin shaft; a connecting groove 10 is arranged on the small-end center point 3 below the shoulder 7, and the connecting groove 10 is movably connected with the end of the handle 9. The function of the handle 9 is to pry the small-end center point 3 through the handle 9, lift the small-end center point 3, and further enable the screw to be placed below the small-end center point 3 and insert the small-end center point 3 into the screw.

[0027] A hook groove 11 is arranged at the top of the end of the handle 9 on one side of the small-end center point 3 to hook the small-end center point 3 through the hook groove 11, thereby restricting the small-end center point 3 and preventing the small-end center point 3 from sliding out of the support frame 1 downward.

[0028] A guide rod 13 is movably installed on the support frame 1 on one side of the big end top 2 through a transverse slide rail 12, and a lifting groove 14 is provided on the guide rod 13. An extension rod 16 is installed on the lifting groove 14 through a locking bolt 15, and a measuring rod 4 is threadedly installed on the end of the extension rod 16. When the measuring rod 4 is inserted into the pin hole of the screw and there is a deviation, the deviation of the measuring rod 4 from the horizontal direction can be effectively amplified by the extension rod 16, so that the deviation of the measuring rod 4 can be visible to the naked eye, and then the verticality of the pin hole can be presented in a form visible to the naked eye, thereby further reducing the difficulty of detection, speeding up the detection process, and further rapid detection. Preferably, the extension rod 16 is a hard carbon fiber tube, so that the weight of the extension rod 16 is effectively reduced by the light weight of the carbon fiber, ensuring that the weight of the extension rod 16 is not easy to affect the insertion of the measuring rod 4 and the measurement of the verticality of the pin hole.

[0029] A level ruler 18 is movably mounted on the guide rod 13 above the extension rod 16 through a longitudinal slide rail 17, and a scale ruler 19 is movably inserted at both ends of the level ruler 18, and a scale 20 is set on the scale ruler 19. The function of the scale ruler 19 is to measure the deviation of the extension rod 16 from the horizontal direction through the scale ruler 19 and the level ruler 18, and then measure the deviation of the measuring rod 4, thereby measuring and calculating the verticality of the pin hole, and quantifying the verticality of the pin hole.

[0030] When testing the verticality of the screw pin hole of the automobile steering gear, the large diameter end of the screw is mounted on the large end top 2; the handle 9 is pressed down, and the handle 9 rotates with the pin shaft as the axis, and the small end top 3 is lifted up to overcome the elastic force of the spring 8, and the small diameter end of the screw is placed under the lifted small end top 3, and the handle 9 is slowly released to insert the small end top 3 into the center hole of the small diameter end of the screw, and the screw is vertically fixed on the support frame 1 through the small end top 3 and the large end top 2. After the screw is fixed, the locking bolt 15 is loosened, so that the extension rod 16 can swing up and down with the locking bolt 15, so as to cooperate with the sliding of the guide rod 13 on the transverse slide rail 12 to insert the measuring rod 4 into the pin hole of the screw. After the measuring rod 4 is inserted into place, tighten the locking bolt 15, place the level ruler 18 against the extension rod 16, make the end of the scale 19 pass through the level ruler 18 and rest against the extension rod 16, read the reading of the scale 19 relative to the level ruler 18, and calculate the verticality of the pin hole through the readings of the scale 19 at both ends of the extension rod 16.

[0031] The detection device for the verticality of the screw pin hole of the automobile steering gear can measure the verticality of the pin hole by the deviation of the measuring rod inserted into the pin hole, which can effectively simplify the measurement, reduce the measurement difficulty, and can quickly measure, effectively improve the detection frequency and detection efficiency, so that it can be applied to the rapid detection in the processing process, so as to carry out comprehensive detection, ensure that there is no missed detection, ensure that the verticality of the pin hole is qualified, and then ensure the product quality. It solves the problem that the existing three-coordinate measuring instrument has low detection frequency and efficiency and is not suitable for full inspection.

Claims

1. A device for detecting the verticality of a screw pin hole of an automobile steering gear, comprising a support frame (1), a large end center (2) and a small end center (3), characterized in that: The support frame (1) is in an inverted "U" shape, a large end pin (2) is inserted into the bottom end of the support frame (1), and a small end pin (3) is inserted into the top end of the support frame (1); the detection device also includes a measuring rod (4) inserted into the screw pin hole and a micrometer (5) for measuring the height of the measuring point of the measuring rod (4).

2. The device for detecting the verticality of the screw pin hole of an automobile steering gear according to claim 1, characterized in that: A pressure cover (6) is installed on the support frame (1) by fixing bolts, and the pressure cover (6) is connected to the top end of the small end top (3); a shoulder (7) is provided on the small end top (3), and a spring (8) is installed on the small end top (3) between the shoulder (7) and the pressure cover (6).

3. The device for detecting the verticality of the screw pin hole of an automobile steering gear according to claim 2, characterized in that: A handle (9) is movably mounted on the support frame (1) below the gland (6) via a pin shaft; a connecting groove (10) is provided on the small end top (3) below the shoulder (7), and the connecting groove (10) is movably connected to the end of the handle (9).

4. The device for detecting the verticality of the screw pin hole of an automobile steering gear according to claim 3, characterized in that: A hook groove (11) is provided at the top of the handle (9) on one side of the small end tip (3).

5. The device for detecting the verticality of the screw pin hole of an automobile steering gear according to claim 4, characterized in that: A guide rod (13) is movably mounted on the support frame (1) on one side of the large end top (2) via a transverse slide rail (12), a lifting groove (14) is provided on the guide rod (13), an extension rod (16) is mounted on the lifting groove (14) via a locking bolt (15), and a measuring rod (4) is threadedly mounted on the end of the extension rod (16).

6. The device for detecting the verticality of the screw pin hole of an automobile steering gear according to claim 5, characterized in that: A level ruler (18) is movably mounted on the guide rod (13) above the extension rod (16) via a longitudinal slide rail (17), and scales (19) are movably inserted at both ends of the level ruler (18), and scales (20) are provided on the scale ruler (19).

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