Quick detection device and measurement method for positioning groove of automobile steering input shaft

Abstract

The present application relates to a kind of quick detection device for the positioning groove of automobile steering input shaft, including bottom plate and two measuring stations on the bottom plate: station one is used to measure the groove width size of the part to be measured, including the first B reference positioning spindle for fixedly placing the part to be measured, the clamping positioning mechanism for the auxiliary positioning of the part to be measured and the first measuring mechanism for detection;Station two is used to measure the groove position degree of the part to be measured, including the second B reference positioning spindle for fixedly placing the part to be measured, the fixed positioning point for the auxiliary positioning of the part to be measured and the second measuring mechanism, third measuring mechanism and fourth measuring mechanism for detection.The device is compared by part and standard piece, and the measurement result is reflected by reading, and whether the product is qualified is judged, compared with three coordinates, with the advantages of quick measurement, intuitive error reflection, simple operation and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile parts testing, in particular to a rapid detection device and measurement method for the positioning groove of the input shaft of an automobile steering gear. BACKGROUND

[0002] The automobile steering gear, also known as a steering machine or a direction machine, is the most important part of the automobile steering system. Its function is to increase the force transmitted by the steering wheel to the steering transmission mechanism and to change the direction of force transmission. The commonly used steering gear is the rack and pinion type, and the steering gear housing is usually formed by casting and then subjected to a finishing process. Then, the rack and pinion components are assembled into the housing. After assembly, the mounting points and the position of the input shaft of the steering gear assembly need to be detected.

[0003] The automobile steering gear input shaft has a wide application prospect and a large quantity of use, and the installation and use requirements are high. The positioning groove of the input shaft of the automobile steering gear is a key part for ensuring the qualification of the automobile steering gear. It is required that the groove width dimension and the groove position degree of each input shaft groove be consistent and good during production, so as to ensure uniform assembly clearance. Since the measured groove width dimension is the distance between the two faces of the input shaft, and the position degree is relative to the inner hole reference, manual measurement with a caliper or a micrometer cannot achieve the purpose. Therefore, three-coordinate measurement is currently used for processing and detection. Three-coordinate measurement can ensure the measurement accuracy, but it takes a long time to use, which affects the rapid adjustment of the input shaft processing site. Moreover, if rapid selection of products is required, three-coordinate measurement cannot meet the requirements. Therefore, a detection device that can quickly judge in the production and selection site is needed. SUMMARY

[0004] The purpose of the present application is to provide a rapid detection device and measurement method for the positioning groove of the input shaft of an automobile steering gear, which can quickly measure, intuitively reflect errors, and is simple to operate.

[0005] The purpose of the present application is achieved by the following technical solutions:

[0006] A rapid detection device for the positioning groove of the input shaft of an automobile steering gear, comprising a base plate and two measurement stations on the base plate: station one and station two.

[0007] The station one is used for measuring the groove width dimension of the measured part, and comprises a first B reference positioning core shaft for fixing and placing the measured part, a clamping positioning mechanism for assisting the positioning of the measured part, and a first measurement mechanism for detection.

[0008] The station two is used for measuring the groove position degree of the measured part, and comprises a second B reference positioning core shaft for fixing and placing the measured part, a fixed positioning point for assisting the positioning of the measured part, and a second measurement mechanism, a third measurement mechanism, and a fourth measurement mechanism for detection.

[0009] Further, the first B reference positioning mandrel and the second B reference positioning mandrel are arranged to match the inner hole of the part to be measured, and the reference B of the B reference positioning mandrel coincides with the reference B required by the measurement dimension of the part

[0010] Further, the clamping positioning mechanism comprises a pair of symmetrical clamping jaws, and the clamping jaws of the clamping positioning mechanism can clamp and align the part to be measured.

[0011] By rotating the clamping positioning mechanism, the two symmetrical clamping jaws clamp the workpiece, and the symmetrical center of the two symmetrical clamping jaws coincides with the reference B of the B reference positioning mandrel

[0012] Further, the first measuring mechanism is a first dial gauge, and the first dial gauge contacts the part to be measured through a first measuring extension rod.

[0013] In operation, the two symmetrical clamping jaws of the clamping positioning mechanism make the part rotate around the first B reference positioning mandrel, and then fix the centers of two planes, and the other plane contacts the first measuring mechanism through the first measuring extension lever, thereby generating a needle displacement.

[0014] Further, the fixed positioning point, the second measuring mechanism, the third measuring mechanism, and the fourth measuring mechanism are arranged around the second B reference positioning mandrel.

[0015] The fixed positioning point abuts against one plane of the part to be measured, and the second measuring mechanism, the third measuring mechanism, and the fourth measuring mechanism respectively contact the other three planes of the part to be measured.

[0016] Further, the second measuring mechanism is a second dial gauge, the second dial gauge contacts the part to be measured through a second measuring extension rod, the third measuring mechanism is a first percentage table, and the fourth measuring mechanism is a second percentage table.

[0017] One plane of the part to be measured contacts the fixed positioning point after rotating around the second B reference positioning mandrel, and the other three planes contact the first percentage table, the second percentage table, and the second dial gauge, thereby generating a needle displacement and reading a value for judgment.

[0018] Further, the measuring points of the fixed positioning point and the measuring points of the second measuring mechanism, the third measuring mechanism, and the fourth measuring mechanism are on the same concentric circle, and the center of the circle is the center of the second B reference positioning mandrel.

[0019] The distances from the rotation centers of the first measuring extension rod in the first station and the second measuring extension rod in the second station to the two measuring points are consistent

[0020] Further, the two measuring stations share a base plate, and a standard part placing box is arranged on the base plate, and the standard part placing box is internally provided with a standard part.

[0021] A measuring method of a quick detection device for a positioning groove of an input shaft of a vehicle steering gear, comprising the following steps:

[0022] Firstly, measurement is carried out at station one, and the specific steps are as follows:

[0023] (1) the standard part is placed into the first B reference positioning mandrel, the clamping positioning mechanism is rotated to clamp the two faces of the standard block, the first micrometer pointer is observed until it is stationary, the first micrometer pointer is zeroed, and the standard part is removed;

[0024] (2) the measured part is placed, and the above sequence is operated, the first micrometer pointer is observed until it is stationary, and the reading of the pointer is the measurement result;

[0025] Secondly, measurement is carried out at station two, and the specific steps are as follows:

[0026] (1) the first dial gauge measuring needle is pulled out, the standard part is inserted into the second B reference positioning mandrel, the standard part is rotated, it is confirmed that the lug side surface of the measured part abuts against the fixed positioning point, the first dial gauge measuring head is released, the second micrometer, the first dial gauge and the second dial gauge are zeroed, and the standard part is removed;

[0027] (2) the measured part is placed, and the above sequence is operated, the readings of the second micrometer, the first dial gauge and the second dial gauge are read, and the readings are the measurement results.

[0028] When station one carries out measurement, the first micrometer pointer is within ±0.05 and is considered to be qualified, and the qualified part is measured at station two; when station two carries out measurement, the second micrometer pointer is within ±0.025 and is considered to be qualified, the first dial gauge pointer is within ±0.04 and is considered to be qualified, and the second dial gauge pointer is within ±0.04 and is considered to be qualified.

[0029] Station one and station two share one measuring standard part, and the measurement results of station one and station two are embodied through comparison measurement with the standard part, and can cover products of the same type as long as the positioning hole sizes are consistent and the groove widths to be measured are consistent

[0030] Compared with the prior art, the present application has the following advantages:

[0031] (1) quick measurement, measurement waiting time is reduced, the error of each part is intuitively reflected through four tables, and complex conversion is not needed; (on the basis that the zero position on each table is fixed, a green qualified area can be marked on the table)

[0032] (2) the measuring operation is simpler than three-coordinate measurement, personnel can use the measuring device after simple training, unlike three-coordinate measurement, which must be trained for a long time;

[0033] (3) the positioning device second B reference positioning mandrel on the device, the operator only needs to insert the part hole gently, which avoids the product shaking during measurement to the greatest extent, and makes the measurement result more accurate;

[0034] (4) the device is provided with a standard part placing area for placing standard parts, which is convenient for taking during testing and avoids the loss of standard parts. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a top view structural schematic diagram of the detection device of the application;

[0036] Figure 2 is a top view structural schematic diagram of the detection device station one;

[0037] Figure 3 is a top view structural schematic diagram of the detection device station two

[0038] Figure 4 is a structural schematic diagram of a standard part;

[0039] Figure 5 is a size diagram of a specific part to be measured. DETAILED DESCRIPTION

[0040] The application will be described in detail below in combination with the drawings and specific embodiments.

[0041] As Figure 1 , Figure 2 , Figure 3 , a rapid detection device for the positioning groove of the input shaft of an automobile steering gear, comprising a bottom plate 7 and two measuring stations: station one and station two, which share one bottom plate 7, and a standard part placing box 8 is also arranged on the bottom plate 7, the standard part placing box 8 is provided with a standard part 14, such as Figure 4 .

[0042] Station one is used for measuring the groove width size of the part to be measured, comprising a first B reference positioning mandrel for fixing and placing the part to be measured, a clamping positioning mechanism 6 for assisting in positioning the part to be measured, and a first measuring mechanism for detection; the first B reference positioning mandrel and the second B reference positioning mandrel are matched with the inner hole of the part to be measured, and the B reference positioning mandrel and the reference B of the measurement size requirement of the part coincide.

[0043] The clamping positioning mechanism 6 includes a pair of symmetrical clamping jaws 13, and the clamping jaws 13 of the clamping positioning mechanism 6 can clamp and align the part to be measured. By rotating the clamping positioning mechanism 6, the two symmetrical clamping jaws 13 clamp the workpiece, and the center of symmetry after clamping of the two symmetrical clamping jaws 13 coincides with the reference of the B reference positioning mandrel 12.

[0044] The first measuring mechanism is a first micrometer 3, and the first micrometer 3 is in contact with the part to be measured through a first measuring extension rod 9. In operation, the two symmetrical clamping jaws 13 of the clamping positioning mechanism 6 are used to rotate and fix the center of the two planes of the part around the first B reference positioning mandrel 12. The other plane is in contact with the first measuring extension lever 9 and the part to generate a needle displacement.

[0045] The second station is used to measure the groove position degree of the part to be measured, and includes a second B reference positioning mandrel for fixing and placing the part to be measured, a fixed positioning point 5 for assisting positioning of the part to be measured, and a second measuring mechanism, a third measuring mechanism and a fourth measuring mechanism for detection. The fixed positioning point 5, the second measuring mechanism, the third measuring mechanism and the fourth measuring mechanism are arranged around the second B reference positioning mandrel, and the fixed positioning point 5 is in abutment with one plane of the part to be measured. The second measuring mechanism, the third measuring mechanism and the fourth measuring mechanism are respectively in contact with the other three planes of the part to be measured.

[0046] The second measuring mechanism is a second micrometer 1, and the second micrometer 1 is in contact with the part to be measured through a second measuring extension rod 10. The third measuring mechanism is a first percentimeter 2, and the fourth measuring mechanism is a second percentimeter 4. One plane of the part to be measured is in contact with the fixed positioning point 5 after being rotated around the second B reference positioning mandrel 11. The other three planes are in contact with the first percentimeter 2, the second percentimeter 4 and the second micrometer 1 to generate a needle displacement and read a value for judgment. The measurement points of the fixed positioning point 5 and the measurement points of the second measuring mechanism, the third measuring mechanism and the fourth measuring mechanism are on the same concentric circle, and the center of the circle is the center of the second B reference positioning mandrel 11. The rotation centers of the first measuring extension rod 9 in the first station and the second measuring extension rod 10 in the second station are consistent with the distances to the two measurement points.

[0047] A measuring method of a rapid detection device for a positioning groove of an input shaft of an automobile steering gear, comprising the following steps:

[0048] Firstly, measurement is performed in the first station, and the specific steps are as follows:

[0049] (1) The standard part 14 is placed in the first B reference positioning mandrel 12, the clamping positioning mechanism 6 is rotated to clamp the two planes of the standard block, the first micrometer 3 is observed until the pointer is stationary, the first micrometer 3 is zeroed, and the standard part 14 is removed.

[0050] (2) Put the part to be measured, and operate according to the above sequence, observe the first micrometer 3 until the pointer is not moving, and the reading of the pointer is the measurement result;

[0051] Secondly, the measurement is carried out at the second station, and the specific steps are as follows:

[0052] (1) Pull out the first dial gauge 2, insert the standard part 14 into the second B reference positioning mandrel 11, rotate the part standard part 14, confirm that the lug side of the part to be measured abuts against the fixed positioning point 5, release the first dial gauge 2, and set the pointers of the second micrometer 1, the first dial gauge 2 and the second dial gauge 4 to zero, and remove the standard part;

[0053] (2) Put the part to be measured, and operate according to the above sequence, read the readings of the second micrometer 1, the first dial gauge 2 and the second dial gauge 4, and the readings are the measurement results.

[0054] When the measurement is carried out at the first station, the first micrometer 3 is considered to be qualified within ±0.05, and the qualified part is measured at the second station; when the measurement is carried out at the second station, the second micrometer 1 is qualified within ±0.025, the first dial gauge 2 is qualified within ±0.04, and the second dial gauge 4 is qualified within ±0.04.

[0055] The first station and the second station use one measurement standard part 14, and the measurement results of the first station and the second station are reflected by comparison with the standard part, and can cover the same type of products as long as the positioning hole size is consistent and the groove width to be measured is consistent. Figure 5 The size diagram of a specific part to be measured.

[0056] The present application realizes rapid measurement, reduces the measurement waiting time, the error of each part is intuitively reflected through four tables, and complex conversion is not needed, and compared with three-coordinate measurement, the present application is simpler, personnel can use the measurement device after simple training, unlike three-coordinate measurement, which must be trained for a long time, the operator only needs to gently insert the inner hole of the part, the shaking of the product during measurement is avoided to the greatest extent, and the measurement result is more accurate.

[0057] The above description of the embodiments is for the convenience of the ordinary skilled person in the art to understand and use the application. The person skilled in the art can obviously make various modifications to the embodiments, and apply the general principles described herein to other embodiments without creative labor. Therefore, the present application is not limited to the above embodiments, and the improvements and modifications made by the person skilled in the art according to the disclosure of the present application without departing from the scope of the present application should be within the protection scope of the present application.

Claims

1. A measuring method for a quick detection device of a positioning slot of an input shaft of an automobile steering gear, characterized in that, The rapid detection device comprises a bottom plate (7) and two measuring stations, i.e., a first station and a second station, arranged on the bottom plate (7); the part to be measured comprises a rod body, a hole arranged on one end of the rod body, and two lugs arranged oppositely and spaced apart on the edge of the hole; The first station is used for measuring the groove width of the part to be measured, and comprises a first B-reference positioning core shaft for fixing the part to be measured, a clamping positioning mechanism (6) for assisting the positioning of the part to be measured, and a first measuring mechanism for detection. The second station is used for measuring the groove position of the part to be measured, and comprises a second B-reference positioning core shaft for fixing the part to be measured, a fixed positioning point (5) for assisting the positioning of the part to be measured, and a second measuring mechanism, a third measuring mechanism and a fourth measuring mechanism for detection. The measuring method comprises the following steps: Firstly, measurement is performed at the first station, and the specific steps are as follows: (1) A standard part (14) is placed into the first B-reference positioning core shaft (12), the standard part (14) corresponds to the part to be measured, and comprises a rod body, a central hole arranged on the rod body, and two standard blocks arranged oppositely and spaced apart on the edge of the central hole; the clamping positioning mechanism (6) is rotated to clamp the two faces of one of the standard blocks, the first micrometer (3) is directed to one side face of the other standard block, the first micrometer (3) is observed until the pointer is stationary, the first micrometer (3) is zeroed, and the standard part (14) is removed; (2) The part to be measured is placed, and the steps (1) are sequentially operated, the first micrometer (3) is observed until the pointer is stationary, and the reading of the pointer is the measurement result; Secondly, measurement is performed at the second station, and the specific steps are as follows: (1) The measuring needle of the first micrometer (2) is pulled out, the standard part (14) is inserted into the second B-reference positioning core shaft (11), the standard part (14) is rotated, it is confirmed that one side face of one of the standard blocks abuts against the fixed positioning point (5), the measuring head of the first micrometer (2) is released to abut against the other side face of the standard block, the measuring heads of the second micrometer (1) and the second micrometer (4) abut against the two side faces of the other standard block, the pointers of the second micrometer (1), the first micrometer (2) and the second micrometer (4) are zeroed, and the standard part is removed; (2) The part to be measured is placed, the steps (1) are sequentially operated, the readings of the pointers of the second micrometer (1), the first micrometer (2) and the second micrometer (4) are read, and the readings are the measurement results.

2. A method of measuring a quick detection device for a positioning slot of an input shaft of a steering gear of a vehicle according to claim 1, characterized in that, The first B-reference positioning core shaft and the second B-reference positioning core shaft are matched with the inner hole of the part to be measured.

3. A method of measuring a quick detection device for a positioning slot of an input shaft of a steering gear of a vehicle according to claim 1, wherein The clamping positioning mechanism (6) comprises a pair of symmetrical clamping jaws (13), and the clamping jaws (13) of the clamping positioning mechanism (6) can clamp and adjust the part to be measured.

4. A method of measuring a quick detection device for a positioning slot of an input shaft of a steering gear of a vehicle according to claim 3, characterized in that, The first measuring mechanism is the first micrometer (3), and the first micrometer (3) is in contact with the part to be measured through the first measuring extension rod (9).

5. A method of measuring a quick detection device for a positioning slot of an input shaft of an automobile steering gear according to claim 1, wherein The fixed positioning point (5), the second measuring mechanism, the third measuring mechanism and the fourth measuring mechanism are arranged around the second B-reference positioning core shaft.

6. A method of measuring a quick detection device for a positioning slot of an input shaft of a steering gear of a vehicle according to claim 5, wherein The second measuring mechanism is a second micrometer (1), the second micrometer (1) is contacted with the measured part through a second measuring extension rod (10), the third measuring mechanism is a first dial gauge (2), and the fourth measuring mechanism is a second dial gauge (4).

7. A method of measuring a quick detection device for a positioning slot of an input shaft of an automobile steering gear according to claim 5, wherein The measuring point of the fixed positioning point (5) and the measuring points of the second measuring mechanism, the third measuring mechanism and the fourth measuring mechanism are on the same concentric circle, and the center of the circle is the center of the second B reference positioning mandrel (11).

8. A method of measuring a quick detection device for a positioning slot of an input shaft of an automobile steering gear according to claim 1, wherein Two measuring stations share a bottom plate (7), and a standard part placing box (8) is further arranged on the bottom plate (7), and the standard part placing box (8) is internally provided with a standard part (14).

9. A method of measuring a quick detection device for a positioning slot of an input shaft of an automobile steering gear according to claim 1, wherein When the first station is used for measurement, the first micrometer (3) is considered to be qualified within ±0.05, and the qualified part is measured at the second station; When the second station is used for measurement, the second micrometer (1) is qualified within ±0.025, the first dial gauge (2) is qualified within ±0.04, and the second dial gauge (4) is qualified within ±0.04.

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