Auxiliary device for measuring phase deviation of transmission shaft welding piece
By designing an auxiliary device, the cross-mand rod structure connected by the fork ear holes is used to convert the 90° phase deviation value into the measurement of the 0° phase deviation value, the problems of low measurement efficiency and low accuracy in the prior art are solved, and more efficient and accurate phase deviation measurement is achieved.
Patent Information
- Application Number
- CN202421658386.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The existing 90° phase angle deviation measurement method requires reading the dial meter reading multiple times, which can easily lead to measurement inaccuracy, and is inefficient when measuring long welded parts, which requires two people to operate together.
An auxiliary device for measuring phase deviation of the drive shaft welded piece is designed, and a cross mandrel structure connected by a fork ear hole is used to convert the 90° phase deviation value into the measurement of the 0° phase deviation value. The measurement process is simplified by the coordination of the long and short mandrels and the test mandrels.
It improves the accuracy and efficiency of measurement, reduces the complexity and artificial error of operations, and can complete measurements by a single person, significantly improving measurement efficiency.
Smart Images
Figure CN222926133U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of the assembly of a drive shaft assembly, and particularly relates to an auxiliary device for measuring the phase deviation of a drive shaft welded part. Background Art
[0002] In the single-section or multi-section structure of the cross shaft assembly in the assembly of the drive shaft assembly, a single welded part has a phase requirement (the included angle between the center lines of the ear holes on both sides). The commonly used phases are 0° or 90°. At present, a method for measuring the 90° phase angle deviation is as follows:
[0003] One end of a shaft tube A (1’) is welded to a welding fork A (2’). The spline (3’) at the other end of the shaft tube is sleeved with a standard connecting fork A (4’) in the 90° phase direction. A snap ring (5’) is assembled in the ear hole on one side of the standard connecting fork, with the side with the snap ring facing up. A vertical positioning mandrel (6’) is inserted into the ear hole on the other side. The vertical positioning mandrel is perpendicular to the test platform (7’) and can keep the welded part rotating normally. The ear hole of the other welding fork passes through an ear hole mandrel (8’). A dial indicator A (9’) is placed on the high point of the plane mandrel on one side of the welding fork to record the data a. Without moving the dial indicator, rotate the welded part (or rotate the vertical mandrel), and then use the dial indicator to measure the high point of the mandrel on the other side of the welding fork to record the data b. Subtract the two recorded data and take the absolute value H 0 =|a - b|, and use the angle formula α 0 = arcsin(H 0 / L), where L is the distance between the two plane sides of the welding fork, and the phase deviation angle value α can be obtained 0 . As Figure 1 、 2 shown (the schematic diagram of the existing 90° phase angle deviation measurement Figure 1 and the schematic diagram of the existing 90° phase angle deviation measurement Figure 2 ).
[0004] However, this method requires reading the readings at the highest points of the dial indicator twice and then calculating the difference between the readings. The two contacts of the dial indicator are on both sides of the welding fork (and the closer to the welding fork, the more accurate the calculation result), but at this time, it is easy to collide with the dial indicator and cause the dial indicator to move, resulting in inaccurate measurement. If the welded part is relatively long, in the case of such a heavy welded part during the rotation process, it is difficult for one person to measure and operate, and at least two people need to cooperate, so the measurement efficiency is low. Summary of the Utility Model
[0005] The purpose of the utility model is to overcome the deficiencies existing in the prior art, and provide an auxiliary device for measuring the phase deviation of a drive shaft welded part, using a cross-shaped core rod structure connected by fork ear holes, which can convert the measurement of the 90° phase deviation value into a simpler and faster measurement of the 0° phase deviation value.
[0006] The object of the present utility model is achieved by the following technical solutions: An auxiliary device for measuring the phase deviation of a welded assembly of a drive shaft. The welded assembly includes a shaft tube, a welding fork is welded to one end of the shaft tube, and a spline shaft is provided at the other end of the shaft tube for mating and installing a standard connection fork. The auxiliary device includes:
[0007] A measuring platform, on both sides of which a first U-shaped equal-height block and a second U-shaped equal-height block with equal end face heights are respectively provided;
[0008] A long mandrel base, on which a long mandrel is vertically penetrated, and both ends of the long mandrel are supported on the second U-shaped equal-height block;
[0009] A short mandrel base fixed on the long mandrel base, on which a short mandrel is vertically installed so that the short mandrel is perpendicular to the long mandrel, and the short mandrel is used to penetrate into the ear hole of the standard connection fork;
[0010] A test mandrel, which is used to penetrate into the ear hole of the welding fork, and both ends of the test mandrel are supported on the first U-shaped equal-height block; and
[0011] A dial indicator, the contact head of which is used to respectively strike above the two contact surfaces of the long mandrel and the second U-shaped equal-height block to obtain the height difference of the dial indicator reading, so as to obtain the phase deviation angle.
[0012] As a further technical solution, the diameters of the long mandrel and the short mandrel are equal and are equal to the diameter of the test mandrel.
[0013] As a further technical solution, the lengths of both ends of the long mandrel protruding from the long mandrel base are equal, and the long mandrel and the long mandrel base are in interference fit.
[0014] As a further technical solution, the long mandrel base and the short mandrel base are fixedly connected by a plurality of bolts.
[0015] As a further technical solution, the number of the bolts is three, and the connecting line of the centers of the three bolts forms an isosceles triangle.
[0016] As a further technical solution, the lower end of the short mandrel is embedded in the short mandrel base, and the two are in interference fit.
[0017] As a further technical solution, the distance from the upper end face of the short mandrel to the center line of the long mandrel is equal to the distance from the upper surface of the short mandrel base to the center line of the long mandrel.
[0018] The beneficial effects of the present utility model are:
[0019] 1. After the long mandrel and the short mandrel are fixed by the corresponding bases and are perpendicular to each other, after the short mandrel is penetrated into the standard connection fork, the 90° phase deviation measurement can be converted into 0° phase deviation measurement, improving the measurement effect and making the measurement result more accurate;
[0020] 2. The diameters of the long mandrel, the short mandrel and the test mandrel are equal to prevent the mandrel from wobbling when passing through the ear hole and improve the measurement accuracy.
[0021] 3. The long mandrel base and the short mandrel base are connected by three socket head cap screws, and the three bolts are connected to form an isosceles triangle, which is convenient for adjusting the perpendicularity and fastening requirements of the long mandrel and the short mandrel during processing and for the detection and maintenance of the device in the future. Description of the Drawings
[0022] Figure 1 Schematic diagram of the existing 90° phase angle deviation measurement Figure 1 .
[0023] Figure 2 Schematic diagram of the existing 90° phase angle deviation measurement Figure 2 .
[0024] Figure 3 Front view structural schematic diagram of the present utility model.
[0025] Figure 4 Three-dimensional structural schematic diagram of the present utility model.
[0026] Figure 5 Structural schematic diagram when the welding part and the standard connecting fork are assembled in the present utility model.
[0027] Figure 6 Structural schematic diagram when the welding fork and the standard connecting fork are at 0° phase in the present utility model.
[0028] Figure 7 Structural schematic diagram when the welding fork and the standard connecting fork are at 90° phase in the present utility model.
[0029] Figure 8 Structural schematic diagram when measuring the 0° phase deviation in the present utility model.
[0030] Figure 9 Schematic diagram of the 0° phase deviation measurement principle in the present utility model.
[0031] Figure 10 Front view structural schematic diagram when measuring the 90° phase deviation in the present utility model.
[0032] Figure 11 Three-dimensional structural schematic diagram when measuring the 90° phase deviation in the present utility model.
[0033] Description of the reference numerals: shaft tube A1’, welding fork A2’, spline 3’, standard connecting fork A4’, snap ring 5’, vertical positioning mandrel 6’, test platform 7’, ear hole mandrel 8’, dial indicator A9’;
[0034] Long mandrel 1, long mandrel base 2, short mandrel 3, short mandrel base 4, bolt 5, welded part 6, welding fork 6-1, shaft tube 6-2, spline shaft 6-3, standard connecting fork 7, test mandrel 8, dial indicator 9, first U-shaped equal-height block 10-1, second U-shaped equal-height block 10-2, measuring platform 11. Specific implementation mode
[0035] The following will introduce the present utility model in detail with reference to the accompanying drawings:
[0036] Example: As shown in the attached Figures 3 to 11 figures, this auxiliary device for measuring the phase deviation of a drive shaft welded part includes a long mandrel 1, a long mandrel base 2, a short mandrel 3, a short mandrel base 4, a bolt 5, a welded part 6, a welding fork 6-1, a shaft tube 6-2, a spline shaft 6-3, a standard connecting fork 7, a test mandrel 8, a dial indicator 9, a first U-shaped equal-height block 10-1, a second U-shaped equal-height block 10-2 and a measuring platform 11.
[0037] Refer to the attached Figure 5 figures. A welding fork 6-1 is welded to the left end of the shaft tube 6-2 of the welded part 6, and a spline shaft 6-3 is arranged at the right end of the shaft tube 6-2. The spline shaft 6-3 is installed in cooperation with the standard connecting fork 7 through splines.
[0038] As shown in Figure 10 and 11 figures, a first U-shaped equal-height block 10-1 and a second U-shaped equal-height block 10-2 are respectively arranged on the left and right sides of the measuring platform 11, and the end face heights of the first U-shaped equal-height block 10-1 and the second U-shaped equal-height block 10-2 are equal.
[0039] Refer to the attached Figure 3 and 4 figures. A long mandrel 1 is vertically penetrated through a long mandrel base 2. The lengths of the two ends of the long mandrel 1 protruding from the long mandrel base 2 are equal, and the long mandrel 1 is in interference fit with the long mandrel base 2. During measurement, the two ends of the long mandrel 1 are supported on the two end faces of the second U-shaped equal-height block 10-2. Further, the bottom of the long mandrel base 2 is vertically connected and fixed to the short mandrel base 4 through three socket head cap screws 5. Preferably, the connecting line of the centers of the three bolts 5 forms an isosceles triangle (as shown in Figure 3As shown in the figure, it is convenient to adjust the perpendicularity and fastening requirements of the long mandrel 1 and the short mandrel 3 during processing, and it is also convenient for the detection and maintenance of the device in the future. The lower end of the short mandrel 3 is embedded and installed in the short mandrel base 4, and the two are in interference fit. After installation, ensure that the distance from the upper end face of the short mandrel 3 to the center line of the long mandrel 1 is equal to the distance from the upper surface of the short mandrel base 4 to the center line of the long mandrel 1. Since the long mandrel base 2 and the short mandrel base 4 are vertically fixed, the short mandrel 3 is perpendicular to the long mandrel 1. During measurement, the short mandrel 3 is inserted into the ear hole of the standard connecting fork 7. Preferably, the diameters of the long mandrel 1 and the short mandrel 3 are equal and equal to the diameter of the test mandrel 8, which can avoid shaking when the mandrel is inserted into the ear hole and improve the measurement accuracy.
[0040] As Figure 10 , 11 shown, during measurement, insert the test mandrel 8 into the ear hole of the welding fork 6-1, and at the same time ensure that both ends of the test mandrel 8 are supported on the two end faces of the first U-shaped equal-height block 10-1. After the arrangement is completed, the contact heads of the dial indicator 9 can be respectively placed vertically above the two contact surfaces of the long mandrel 1 and the second U-shaped equal-height block 10-2 to obtain the height difference of the dial indicator reading, so as to calculate the phase deviation angle.
[0041] The working process of the present utility model:
[0042] As Figure 5 shown, it is a welded part 6 and a standard connecting fork 7 of the transmission shaft assembly. The welded part 6 is formed by connecting a welding fork 6-1 with two through holes, a hollow shaft tube 6-2 and a spline shaft 6-3 by welding. Therefore, there must be a certain phase deviation angle α between the welded part 6 and the connecting fork 7 connected by splines. The commonly used set values for the general phase are 0° phase (as Figure 6 shown) and 90° phase (as Figure 7 shown).
[0043] The current method for measuring the 0° phase deviation is shown Figure 8 shown. A test mandrel 8 is sleeved on the welding fork 6-1 of the welded part 6, the standard connecting fork 7 is sleeved on the spline shaft 6-3 according to the 0° phase, and another test mandrel 8 is sleeved on the connecting fork 7. The U-shaped equal-height blocks 10-1 and 10-2 are placed flat on the measuring platform 11, and the two test mandrels 8 are correspondingly placed on the two U-shaped equal-height blocks (the first U-shaped equal-height block 10-1, the second U-shaped equal-height block 10-2). According to the principle that three points form a plane, because there is a phase deviation angle α, there will be a gap where one of the test mandrels 8 and the U-shaped equal-height block cannot be in full contact. Finally, the contact head of the dial indicator 9 is placed vertically above the contact surface where there is a gap between the test mandrel 8 and the U-shaped equal-height block (see Figure 9) Obtain the height difference H of the dial indicator reading, and calculate the phase deviation angle α = arctan(H / L0) through the inverse trigonometric function. Since the width L0 of the U-shaped equal-height block is fixed, the height difference H of the dial indicator reading corresponding to 0.1°, 0.2°, 0.3°... can be calculated in the form of a list.
[0044] , with the aid of the auxiliary device provided by the present utility model, the measurement of the 90° phase deviation angle α can be converted into the measurement of the 0° phase. As Figure 10 , 11 shown, after the short mandrel 3 of the device is sleeved into the standard connecting fork 7 from below, it becomes simple to measure the 90° phase deviation angle α. The long mandrel 1 is placed on the second U-shaped equal-height block 10-2 instead of the other test mandrel 8, and the phase deviation angle α can be measured according to the above method for measuring the 0° phase deviation.
[0045] It can be understood that for those skilled in the art, any equivalent replacement or change to the technical solution and the inventive concept of the present utility model should fall within the protection scope of the appended claims of the present utility model.
Claims
1. An auxiliary device for measuring phase deviation of a transmission shaft welded component, the welded component (6) comprising a shaft tube (6-2), one end of the shaft tube (6-2) being welded with a welding fork (6-1), and the other end of the shaft tube (6-2) being provided with a spline shaft (6-3) for matching and installing a standard connecting fork (7), characterized in that: include: A measuring platform (11), on both sides of which a first U-shaped equal height block (10-1) and a second U-shaped equal height block (10-2) with equal end surface heights are respectively arranged; A long mandrel base (2) on which a long mandrel (1) is vertically passed, and both ends of the long mandrel (1) are supported on a second U-shaped equal-height block (10-2); A short mandrel base (4) fixed on the long mandrel base (2), on which the short mandrel (3) is vertically mounted, so that the short mandrel (3) is vertical relative to the long mandrel (1), and the short mandrel (3) is used to penetrate into the ear hole of the standard connecting fork (7); A test mandrel (8) is used to penetrate into the ear hole of the welding fork (6-1), and both ends of the test mandrel (8) are supported on a first U-shaped equal height block (10-1); and The dial gauge (9) has a contact head which is used to respectively strike vertically above the two contact surfaces of the long mandrel (1) and the second U-shaped equal height block (10-2) to obtain the height difference of the dial gauge reading, thereby obtaining the phase deviation angle.
2. The auxiliary device for measuring phase deviation of a transmission shaft weldment according to claim 1, characterized in that: The diameters of the long mandrel (1) and the short mandrel (3) are equal, and are also equal to the diameter of the test mandrel (8).
3. The auxiliary device for measuring phase deviation of transmission shaft welded parts according to claim 1, characterized in that: The two ends of the long mandrel (1) pass through the long mandrel base (2) to the same length, and the long mandrel (1) and the long mandrel base (2) are interference fit.
4. The auxiliary device for measuring phase deviation of a transmission shaft weldment according to claim 1, characterized in that: The long core rod base (2) and the short core rod base (4) are connected and fixed by a plurality of bolts (5).
5. The auxiliary device for measuring phase deviation of transmission shaft welded parts according to claim 4, characterized in that: The number of the bolts (5) is three, and the line connecting the centers of the three bolts (5) forms an isosceles triangle.
6. The auxiliary device for measuring phase deviation of a transmission shaft weldment according to claim 1, characterized in that: The lower end of the short mandrel (3) is embedded in the short mandrel base (4), and the two are interference fit.
7. The auxiliary device for measuring phase deviation of a transmission shaft weldment according to claim 6, characterized in that: The distance from the upper end surface of the short mandrel (3) to the center line of the long mandrel (1) is equal to the distance from the upper surface of the short mandrel base (4) to the center line of the long mandrel (1).