CN113695897B - Assembly equipment and assembly method for steel ball type steering intermediate shaft - Google Patents
Assembly equipment and assembly method for steel ball type steering intermediate shaft Download PDFInfo
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- CN113695897B CN113695897B CN202010430674.0A CN202010430674A CN113695897B CN 113695897 B CN113695897 B CN 113695897B CN 202010430674 A CN202010430674 A CN 202010430674A CN 113695897 B CN113695897 B CN 113695897B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 107
- 239000010959 steel Substances 0.000 title claims abstract description 107
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- 230000007246 mechanism Effects 0.000 claims abstract description 71
- 238000012360 testing method Methods 0.000 claims abstract description 26
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- 238000006073 displacement reaction Methods 0.000 claims description 87
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- 230000000712 assembly Effects 0.000 abstract description 2
- 238000000429 assembly Methods 0.000 abstract description 2
- 239000000306 component Substances 0.000 description 13
- 238000013461 design Methods 0.000 description 11
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
- B23P21/002—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control the units stationary whilst being composed
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Abstract
The assembly equipment and the assembly method for the steel ball type steering intermediate shaft are characterized in that a servo motor component for height adjustment is arranged at the top of an assembly frame, a liftable joint fork clamping mechanism is arranged on one side of the frame, a fixed joint fork clamping mechanism component is arranged on the frame, and the joint fork part of the steel ball type steering intermediate shaft to be assembled is clamped through the mechanism component; the lower part of the motor for applying torque is connected with the central position of the fixed yoke clamping mechanism assembly, and the motor for applying torque applies torque to the steel ball type steering intermediate shaft to be assembled, which is clamped by the fixed yoke clamping mechanism assembly; an angle clearance testing mechanism component is arranged at the lower part of the mounting frame body of the yoke clamping mechanism, and the steel ball type steering intermediate shaft to be assembled is clamped through the angle clearance testing mechanism component and is assembled by selecting an adaptive steel ball. The invention effectively and accurately tests the angular gap between the shaft and the pipe, and selects the best matched steel ball to meet the assembly requirements of various steel ball type intermediate shaft assemblies.
Description
Technical Field
The invention relates to the field of assembly of parts, in particular to an assembly device and an assembly method applied to a steel ball type steering intermediate shaft.
Background
At present, an intermediate shaft, which is one of parts of an automobile steering system, is used as a transmission connecting piece for connecting a steering column and a steering machine, the intermediate shaft transmits torque and rotation speed from the steering column to the steering machine, and the intermediate shaft has to have strong torsional rigidity and low running noise and has an easily telescopic function. So that the development and the manufacture of the method belong to key core technologies of various automobile part manufacturers.
With the continuous development of the automobile industry, the requirements for the electric power steering system are gradually increased during vehicle development, and meanwhile, the output torque available for the system is continuously increased, so that the sustainable torque of an intermediate connecting part, namely an intermediate shaft, working as a transmission torque is required to be higher.
According to the research and analysis of the existing products on the market at present, the result shows that the spline type coating or injection molding coating in the prior art is difficult to meet the requirement of high torque in the structure, so the steel ball type intermediate shaft is grasped and developed at present, the intermediate shaft of the structural type has obvious advantages in the application of high torque, and the steel ball type structure in the market at present has a great difference, so the problems of overhigh processing cost or excessively complex structure, increased assembly complexity and reduced assembly line efficiency are caused.
In view of the foregoing, there is a need for an assembling apparatus and a mating assembling method for the steel ball type intermediate shaft, which can meet the assembling requirements of steel ball type intermediate shaft assemblies with different angles and heights, and has wide applicability and high installation accuracy.
Disclosure of Invention
In order to solve various problems of the steel ball type steering intermediate shaft in the installation process in the prior art, the invention provides the assembly equipment and the assembly method for the steel ball type steering intermediate shaft, the equipment and the method combine the design principle of the linear rolling bearing, redesign the sliding pair part, and simultaneously match with the new assembly principle, thereby not only realizing the cost reduction of products, greatly improving the torque application range of the products, but also simplifying the assembly principle of assembly parts.
The invention relates to an assembly device and an assembly method for a steel ball type steering intermediate shaft, wherein the device part and the method part are as follows:
The utility model provides a steel ball formula turns to equipment for jackshaft, includes the assembly base, sets up the fixed floor that is vertical assembly frame and fixed assembly frame used on the assembly base, its characterized in that:
the top of the assembly frame is provided with a servo motor component for adjusting the height;
The assembly frame is provided with a liftable yoke clamping mechanism mounting frame body at one side of the frame body,
The installation frame body of the joint fork clamping mechanism is formed by mutually and vertically combining an installation bedplate arranged in a horizontal plane and an installation riser arranged vertically, reinforcing rib plates connected with the installation bedplate are further arranged on two sides of the installation riser, and the upper and lower heights of the installation frame body of the joint fork clamping mechanism are adjusted through a servo motor component for adjusting the height;
The middle position of the mounting bedplate is provided with a fixed yoke clamping mechanism assembly, and the yoke position of the steel ball type steering intermediate shaft to be assembled is clamped by the fixed yoke clamping mechanism assembly;
the mounting vertical plate is provided with a motor for applying torque which is arranged vertically, the lower part of the motor for applying torque is connected with the center position of the fixed yoke clamping mechanism assembly, and the motor for applying torque applies torque to the steel ball type steering intermediate shaft to be assembled which is clamped by the fixed yoke clamping mechanism assembly;
an angular gap testing mechanism assembly is arranged at the lower part of the mounting bedplate, and is used for clamping a steel ball type steering intermediate shaft to be assembled and selecting an adaptive steel ball to assemble the intermediate shaft;
the fixed joint fork clamping mechanism assembly comprises a clamping mechanism fixing bracket, a circular clamping disc, a clamping cylinder, a driving arm and clamping jaws, wherein the circular clamping disc is fixedly arranged at the middle position of the mounting platen through the clamping mechanism fixing bracket, the center of the circular clamping disc is opposite to the lower part of the motor for applying torque and is connected with the motor, the clamping cylinder is arranged at one side of the circular clamping disc, the clamping cylinder is connected with the circular clamping disc through the driving arm, and the driving arm is pushed/pulled to rotate clockwise or anticlockwise through the telescopic movement of the clamping cylinder to clamp or loosen the clamping jaws to the fixed joint fork of the steel ball type steering intermediate shaft to be assembled;
The angle clearance testing mechanism assembly comprises a first push-pull cylinder, a sliding shaft clamping cylinder provided with a floating mechanism, a sliding shaft clamping jaw, a second push-pull cylinder, a sliding pipe clamping jaw and a displacement sensor assembly, wherein the first push-pull cylinder is horizontally arranged at the lower part of the mounting platen, a push-pull working end of the first push-pull cylinder is connected with the sliding shaft clamping cylinder, the shaft clamping cylinder drives the sliding shaft clamping jaw connected with the shaft clamping cylinder to clamp a sliding shaft body of a steel ball steering intermediate shaft to be assembled, the second push-pull cylinder is arranged at the lower part of the first push-pull cylinder, a push-pull working end of the second push-pull cylinder is connected with the sliding pipe clamping cylinder, the sliding pipe clamping cylinder drives the sliding pipe clamping jaw connected with the sliding pipe clamping cylinder to clamp the sliding pipe body of the steel ball steering intermediate shaft to be assembled, and the displacement sensor assembly is fixedly arranged at the lower part of one side of the sliding shaft clamping cylinder;
the design aim is to test the actual clearance of any group of shaft tubes by using the standard steel balls with small-grade size through the angle clearance test mechanism assembly, select the steel balls to be adapted according to clearance values and theoretical data and early test data, ensure that the intermediate shaft meets the requirements of angle clearance and sliding force at the same time and ensure the qualification rate.
The displacement sensor assembly comprises a sensor baffle, a main displacement sensor and an auxiliary displacement sensor, wherein the sensor baffle is connected with the lower part of one side of the sliding shaft clamping cylinder, and the main displacement sensor and the auxiliary displacement sensor are sequentially arranged on the side plate wall of the sensor baffle from top to bottom.
The independently arranged displacement sensor component is a core component of the assembly equipment for the steel ball type steering intermediate shaft, the main displacement sensor and the auxiliary displacement sensor can accurately and effectively monitor displacement values, and the relative displacement between a non-shaft and a pipe does not influence the final test result.
The assembly method for the steel ball type steering intermediate shaft is based on the assembly equipment for the steel ball type steering intermediate shaft, and comprises the following specific steps of:
1) Firstly, adjusting the upper and lower heights of a yoke clamping mechanism mounting frame body through a servo motor assembly for height adjustment to enable the yoke clamping mechanism mounting frame body to be adapted to an intermediate shaft to be assembled currently, vertically arranging a steel ball type steering intermediate shaft to be assembled in a fixed yoke clamping mechanism assembly at the middle position of a mounting platen, arranging a fixed yoke of the intermediate shaft at the center position of a circular clamping disc, and driving the circular clamping disc to rotate clockwise to clamp the fixed yoke by pushing a driving arm through a clamping cylinder;
2) Starting a first push-pull cylinder to extend a sliding shaft clamping cylinder, and driving a sliding shaft clamping jaw connected with the shaft clamping cylinder to clamp a sliding shaft body of a steel ball type steering intermediate shaft to be assembled by the shaft clamping cylinder;
3) Starting a second push-pull cylinder to extend the sliding pipe clamping cylinder, and driving a sliding pipe clamping claw connected with the sliding pipe clamping cylinder to clamp a sliding pipe body of a steel ball type steering intermediate shaft to be assembled by the sliding pipe clamping cylinder;
4) Confirming that a fixed joint fork, a sliding shaft and a sliding pipe are clamped, starting a motor for applying torque, applying torque to the clamped steel ball type steering intermediate shaft to be assembled, and in the process, generating a relative angle difference by the sliding pipe, wherein a sliding shaft clamping jaw drives a sliding shaft clamping cylinder provided with a floating mechanism to swing, and a sensor baffle plate arranged at the lower part of one side of the sliding shaft clamping cylinder compresses or loosens a main displacement sensor and an auxiliary displacement sensor;
5) In step 4), the main displacement sensor records the change of the displacement value, the auxiliary displacement sensor also records the displacement value, the recorded displacement value is compared with the displacement value of the main displacement sensor, when the difference value of the two groups of displacement sensors is larger than the set range, the deviation of the displacement detection is proved to exist, the maintenance is needed, and if the difference value of the two groups of displacement sensors is in the set range, the state of the displacement sensor is proved to be normal;
Two sets of displacement sensors are arranged here, one set of primary displacement sensors being used for testing the angular gap, and the other set of secondary displacement sensors being secondary sensors for verifying the validity of the primary sensors.
6) In step 5), the displacement value obtained by the main displacement sensor is converted into an angle with the distance from the center of the displacement sensor to the center of the sliding pipe body as a radius, wherein the angle is the angle gap required to be tested, and the method specifically comprises the following steps:
assuming that the compression amount of the displacement sensor is a when torque is applied in the forward and reverse directions, the angle clearance alpha=360 a/(50 pi) ° between the shaft tubes at the moment, so as to obtain the size of the steel ball which needs to be matched with the shaft tubes;
7) And 6) after the matched steel ball size is obtained in the step 6), the steel ball type intermediate shaft is installed, after the installation is completed, the air cylinders and clamping jaws at all positions are reversely loosened, the assembled steel ball type steering intermediate shaft is taken out, and the next operation is prepared.
The assembly method for the steel ball type steering intermediate shaft is characterized in that the setting range of the difference value of the two groups of displacement sensors in the step 5) is 0-0.02 mm, and the difference value exceeds 0.02mm, and the steel ball type steering intermediate shaft is judged to be in need of maintenance.
The design here is aimed at making the invention self-checking-when there is an abnormality in the angular gap testing mechanism assembly.
In summary, the conventional solution in the prior art is to measure the dimensions of the sliding shaft and the positions of the ball grooves of the sliding tube and the angular relationship between each ball groove, and then select an appropriate steel ball according to the measurement related result, and the assembly principle has the problems of high measurement accuracy requirement and relatively complex measurement process. The assembly equipment and the assembly method for the steel ball type steering intermediate shaft adopt the method that the angle clearance of the shaft tube is directly tested, and the correlation between steel balls with different sizes and the angle clearance and the sliding force are obtained through experiments, so that the steel ball size required to be matched with the shaft tube is obtained.
The assembly equipment and the assembly method for the steel ball type steering intermediate shaft have the following beneficial effects:
1. according to the assembly equipment and the assembly method for the steel ball type steering intermediate shaft, the steel ball type steering intermediate shaft assembly with different angles and heights can be assembled because the steel ball type steering intermediate shaft assembly with higher rigidity requirements and larger torque range can be realized through design calculation and experimental verification;
2. According to the assembly equipment and the assembly method for the steel ball type steering intermediate shaft, the high-precision and high-stability structural design of the assembly equipment and the assembly method enables the angle clearance between the shaft and the pipe to be effectively and accurately tested, and influences of other interference factors on test results are eliminated;
3. According to the assembly equipment and the assembly method for the steel ball type steering intermediate shaft, the steel ball which is optimally matched can be selected through early test data and selection logic, so that the cost and complexity of measurement during part assembly are saved, the optimal matching of the sliding pair positions is realized, the extremely high flexible design is realized, and the larger product design range can be met;
4. The assembly equipment and the assembly method for the steel ball type steering intermediate shaft are designed with a self-checking function, and can perform self-checking when an angular clearance testing mechanism component is abnormal.
Drawings
FIG. 1 is a schematic diagram showing a specific structure of a device part of an assembly apparatus and an assembly method for a steel ball type steering intermediate shaft according to the present invention;
FIG. 2 is a schematic illustration of a specific construction of a fixed yoke clamping mechanism assembly of the present invention for an assembly apparatus and apparatus portion of an assembly method for a steel ball steering intermediate shaft;
FIG. 3a is a schematic illustration of a specific construction of an angular gap testing mechanism assembly of a device portion of an assembly apparatus and method for a steel ball steering intermediate shaft of the present invention;
FIG. 3b is a schematic view showing another specific structure of an assembly device for a steel ball type steering intermediate shaft and an angular gap testing mechanism assembly of a device part of the assembly method according to the present invention;
fig. 4 is a schematic diagram showing the correlation between the steel ball size and the angular gap and the sliding force of the assembly device and the assembly method for the steel ball type steering intermediate shaft.
In the figure: the device comprises A1-assembly base, A2-assembly frame, A3-fixed rib plate, A4-servo motor component for height adjustment, A5-yoke clamping mechanism installation frame body, A5 a-installation bedplate, A5B-installation vertical plate, A5 c-reinforcing rib plate, a 6-steel ball type steering intermediate shaft to be assembled, a 7-motor for applying torque, an A-fixed yoke clamping mechanism component, an A1-clamping mechanism fixing bracket, an A2-circular clamping disk, an A3-clamping cylinder, an A4-driving arm, an A5-clamping jaw, a B-angle clearance testing mechanism component, a B1-first push-pull cylinder, a B2-sliding shaft clamping cylinder provided with a floating mechanism, a B3-sliding shaft clamping jaw, a B4-second push-pull cylinder, a B5-sliding pipe clamping cylinder, a B6-sliding pipe clamping jaw, a B7-displacement sensor component, a B7 a-sensor baffle, a B7B-main displacement sensor and a B7 c-auxiliary displacement sensor.
Detailed Description
The assembly equipment and the assembly method for the steel ball type steering intermediate shaft are further described below with reference to the accompanying drawings and the embodiment:
examples
As shown in fig. 1 to 3b, an assembly apparatus for a steel ball type steering intermediate shaft includes an assembly base 1, an assembly frame 2 provided on the assembly base in a vertical form, and a fixing rib 3 for fixing the assembly frame, wherein:
The assembly frame 2 is provided with a servo motor assembly 4 for height adjustment at the top thereof;
The assembly frame 2 is provided with a liftable yoke clamping mechanism mounting frame 5 at one side of the frame body,
The installation frame body 5 of the joint fork clamping mechanism is formed by mutually and vertically combining an installation bedplate 5a arranged in a horizontal plane and an installation riser 5b arranged vertically, reinforcing rib plates 5c connected with the installation bedplate are further arranged on two sides of the installation riser, and the upper and lower heights of the installation frame body of the joint fork clamping mechanism are adjusted through a servo motor assembly 4 for adjusting the height;
A fixed yoke clamping mechanism assembly A is arranged in the middle of the mounting bedplate 5a, and the yoke part of the steel ball type steering intermediate shaft 6 to be assembled is clamped by the fixed yoke clamping mechanism assembly;
The mounting vertical plate 5b is provided with a vertically arranged motor 7 for applying torque, the lower part of the motor for applying torque is connected with the central position of the fixed yoke clamping mechanism assembly A, and the motor for applying torque applies torque to the steel ball type steering intermediate shaft 6 to be assembled, which is clamped by the fixed yoke clamping mechanism assembly;
An angular gap testing mechanism component B is arranged at the lower part of the mounting bedplate 5a, and is used for clamping a steel ball type steering intermediate shaft to be assembled and selecting an adaptive steel ball to assemble the intermediate shaft;
The fixed knot fork clamping mechanism assembly A comprises a clamping mechanism fixing bracket A1, a circular clamping disk A2, a clamping cylinder A3, a driving arm A4 and a clamping jaw A5, wherein the circular clamping disk is fixedly arranged at the middle position of a mounting platen 5a through the clamping mechanism fixing bracket, the center of the circular clamping disk is opposite to the lower part of a motor 7 for applying torque and is connected with the lower part, the clamping cylinder is arranged at one side of the circular clamping disk, the clamping cylinder is connected with the circular clamping disk through the driving arm, and the driving arm is pushed/pulled to rotate clockwise or anticlockwise through the telescopic movement of the clamping cylinder so as to clamp or loosen the clamping jaw to the fixed knot fork of the steel ball type steering intermediate shaft to be assembled;
The angle clearance testing mechanism component B comprises a first push-pull air cylinder B1, a sliding shaft clamping air cylinder B2 provided with a floating mechanism, a sliding shaft clamping jaw B3, a second push-pull air cylinder B4, a sliding pipe clamping air cylinder B5, a sliding pipe clamping jaw B6 and a displacement sensor component B7, wherein the first push-pull air cylinder is horizontally arranged at the lower part of the mounting bedplate 5a, a push-pull working end of the first push-pull air cylinder is connected with the sliding shaft clamping air cylinder, the shaft clamping air cylinder drives the sliding shaft clamping jaw connected with the first push-pull air cylinder to clamp the sliding shaft body of the steel ball type steering intermediate shaft 6 to be assembled, the second push-pull air cylinder is arranged at the lower part of the first push-pull air cylinder, the push-pull working end of the second push-pull air cylinder is connected with the sliding pipe clamping air cylinder, the sliding pipe clamping air cylinder drives the sliding pipe clamping jaw connected with the sliding pipe clamping jaw to clamp the sliding pipe body of the steel ball type steering intermediate shaft to be assembled, and the displacement sensor component is fixedly arranged at the lower part of one side of the sliding shaft clamping air cylinder;
The displacement sensor assembly B7 comprises a sensor baffle B7a, a main displacement sensor B7B and an auxiliary displacement sensor B7c, wherein the sensor baffle is connected with the lower part of one side of the sliding shaft clamping cylinder B2, and the main displacement sensor and the auxiliary displacement sensor are sequentially arranged on the wall of one side plate of the sensor baffle from top to bottom.
The assembly method for the steel ball type steering intermediate shaft is based on the assembly equipment for the steel ball type steering intermediate shaft, and comprises the following specific steps of:
1) Firstly, adjusting the upper and lower heights of a yoke clamping mechanism mounting frame body 5 through a servo motor assembly 4 for height adjustment to enable the yoke clamping mechanism mounting frame body to be adapted to an intermediate shaft to be assembled currently, vertically arranging a steel ball type steering intermediate shaft 6 to be assembled in a fixed yoke clamping mechanism assembly A at the middle position of a mounting bedplate 5a, arranging a fixed yoke of the intermediate shaft at the center position of a circular clamping disc A2, and driving the circular clamping disc A4 to rotate clockwise to clamp the fixed yoke by pushing a clamping cylinder A3;
2) Starting a first push-pull cylinder B1 to extend a sliding shaft clamping cylinder B2, and driving a sliding shaft clamping jaw B3 connected with the sliding shaft clamping cylinder to clamp a sliding shaft body of a steel ball type steering intermediate shaft 6 to be assembled by the shaft clamping cylinder;
3) Starting a second push-pull cylinder B4 to extend a sliding pipe clamping cylinder B5, and driving a sliding pipe clamping claw B6 connected with the sliding pipe clamping cylinder to clamp the sliding pipe body of the steel ball type steering intermediate shaft to be assembled by the sliding pipe clamping cylinder;
4) Confirming that a fixed joint fork, a sliding shaft and a sliding pipe are clamped, then starting a motor 7 for applying torque, applying torque to the clamped steel ball type steering intermediate shaft 6 to be assembled, and in the process, generating a relative angle difference of the sliding pipe, wherein a sliding shaft clamping jaw B3 drives a sliding shaft clamping cylinder B2 provided with a floating mechanism to swing, and a sensor baffle B7a arranged at the lower part of one side of the sliding shaft clamping cylinder compresses or loosens a main displacement sensor B7B and an auxiliary displacement sensor B7c;
5) In step 4), the main displacement sensor B7B records the change of the displacement value, the auxiliary displacement sensor B7c also records the displacement value, the recorded displacement value is compared with the displacement value of the main displacement sensor, when the difference value of the two groups of displacement sensors is larger than the set range, the deviation of the displacement detection is proved to exist, the maintenance is needed, and if the difference value of the two groups of displacement sensors is in the set range, the state of the displacement sensor is proved to be normal;
6) In step 5), the displacement value obtained by the main displacement sensor B7B is converted into an angle with the distance from the center of the displacement sensor to the center of the sliding pipe body (in this embodiment, the distance from the center of the displacement sensor to the center of the sliding pipe body is 25 mm) as a radius, and the angle is the angle gap to be tested, which specifically is:
Assuming that the compression amount of the displacement sensor is a when torque is applied in the forward and reverse directions, the angle clearance alpha=360 a/(50 pi) ° between the shaft tubes at the moment is further obtained, and the steel ball size required to be matched with the shaft tubes is obtained;
7) And 6) after the matched steel ball size is obtained in the step 6), the steel ball type intermediate shaft is installed, after the installation is completed, the air cylinders and clamping jaws at all positions are reversely loosened, the assembled steel ball type steering intermediate shaft is taken out, and the next operation is prepared.
And 5) setting the difference value of the two groups of displacement sensors in the step 5) to be 0-0.02 mm, and judging that maintenance is needed if the difference value exceeds 0.02 mm.
In the embodiment, the actual gap of any group of shaft tubes is tested by using the standard steel balls with small-grade size, and the steel balls to be adapted are selected according to the gap value and the theoretical data and the early test data, so that the requirement of the angle gap and the sliding force of the intermediate shaft can be met simultaneously, and the qualification rate can be guaranteed. As shown in FIG. 4, the correlation of the steel ball size with the angular gap and the sliding force was obtained by testing the angular gap and the sliding force of steel balls (10 gear per 2 μ) of 4.7625mm-20 μ to 4.7625 mm. When the production line is automatically produced, the matched shaft tube is tested by using a steel ball of 4.7625mm-20 mu, and the steel ball with proper size is matched according to the measured clearance value.
According to the assembly equipment and the assembly method for the steel ball type steering intermediate shaft, the steel ball type steering intermediate shaft assembly with different angles and heights can be assembled because the steel ball type steering intermediate shaft assembly with higher rigidity requirements and larger torque range can be realized through design calculation and experimental verification; the invention has high-precision and high-stability structural design, so that the invention can effectively and accurately test the angular gap between the shaft and the pipe, and eliminate the influence of other interference factors on the test result; the invention can select the best matched steel ball through the early test data and the matching logic, saves the cost and complexity of measurement during the assembly of parts, realizes the best matching of the sliding pair positions, has extremely high flexible design, can meet the larger product design range, has a self-checking function, and can carry out self-checking when the angular clearance test mechanism component is abnormal.
Claims (3)
1. The utility model provides a steel ball formula turns to equipment for jackshaft, includes assembly base (1), sets up on the assembly base and is vertical assembly frame (2) and fixed floor (3) that fixed assembly frame used, its characterized in that:
The top of the assembly frame (2) is provided with a servo motor component (4) for adjusting the height;
The assembly frame (2) is provided with a liftable yoke clamping mechanism installation frame (5) at one side of the frame body,
The installation frame body (5) of the joint fork clamping mechanism is formed by mutually and vertically combining an installation bedplate (5 a) arranged in a horizontal plane and an installation riser (5 b) arranged vertically, reinforcing rib plates (5 c) connected with the installation bedplate are further arranged on two sides of the installation riser, and the upper and lower heights of the installation frame body of the joint fork clamping mechanism are adjusted through a servo motor assembly (4) for adjusting the height;
A fixed yoke clamping mechanism component (A) is arranged at the middle position of the mounting bedplate (5 a), and the yoke position of the steel ball type steering intermediate shaft (6) to be assembled is clamped by the fixed yoke clamping mechanism component;
The mounting vertical plate (5 b) is provided with a motor (7) for applying torque which is arranged vertically, the lower part of the motor for applying torque is connected with the center position of the fixed yoke clamping mechanism assembly (A), and the motor for applying torque applies torque to the steel ball type steering intermediate shaft (6) to be assembled which is clamped by the fixed yoke clamping mechanism assembly;
An angular gap testing mechanism component (B) is arranged at the lower part of the mounting bedplate (5 a), and is used for clamping a steel ball type steering intermediate shaft (6) to be assembled and selecting an adaptive steel ball to assemble the intermediate shaft;
The fixed joint fork clamping mechanism assembly (A) comprises a clamping mechanism fixing bracket (A1), a circular clamping disc (A2), a clamping cylinder (A3), a driving arm (A4) and a clamping jaw (A5), wherein the circular clamping disc is fixedly arranged at the middle position of a mounting bedplate (5 a) through the clamping mechanism fixing bracket, the center of the circular clamping disc is opposite to the lower part of a motor (7) for applying torque and is connected with the motor, the clamping cylinder is arranged at one side of the circular clamping disc, the clamping cylinder is connected with the circular clamping disc through the driving arm, and the driving arm is pushed/pulled to rotate clockwise or anticlockwise through the telescopic motion of the clamping cylinder to clamp or loosen the clamping jaw to a steel ball type fixed joint fork of a steering intermediate shaft to be assembled;
The angle clearance testing mechanism assembly (B) comprises a first push-pull air cylinder (B1), a sliding shaft clamping air cylinder (B2) provided with a floating mechanism, a sliding shaft clamping jaw (B3), a second push-pull air cylinder (B4), a sliding pipe clamping air cylinder (B5), a sliding pipe clamping jaw (B6) and a displacement sensor assembly (B7), wherein the first push-pull air cylinder is horizontally arranged at the lower part of the mounting bedplate (5 a), a push-pull working end of the first push-pull air cylinder is connected with the sliding shaft clamping air cylinder, the shaft clamping air cylinder drives the sliding shaft clamping jaw connected with the shaft clamping air cylinder to clamp the sliding shaft body of the steel ball type steering intermediate shaft (6) to be assembled, the second push-pull air cylinder is arranged at the lower part of the first push-pull air cylinder, the push-pull working end of the second push-pull air cylinder is connected with the sliding pipe clamping air cylinder, the sliding pipe clamping air cylinder drives the sliding pipe clamping jaw connected with the sliding pipe clamping jaw to clamp the steel ball type steering intermediate shaft to be assembled, and the displacement sensor assembly is fixedly arranged at the lower part of one side of the sliding shaft clamping air cylinder;
The displacement sensor assembly (B7) comprises a sensor baffle (B7 a), a main displacement sensor (B7B) and an auxiliary displacement sensor (B7 c), wherein the sensor baffle is connected with the lower part of one side of the sliding shaft clamping cylinder (B2), and the main displacement sensor and the auxiliary displacement sensor are sequentially arranged on the wall of a side plate of the sensor baffle from top to bottom.
2. The assembly method for the steel ball type steering intermediate shaft, which is based on the assembly equipment for the steel ball type steering intermediate shaft of claim 1, comprises the following specific steps:
Firstly, adjusting the upper and lower heights of a joint fork clamping mechanism mounting frame body (5) through a servo motor assembly (4) for height adjustment to enable the joint fork clamping mechanism mounting frame body to be matched with an intermediate shaft which is required to be assembled at present, vertically arranging a steel ball type steering intermediate shaft (6) to be assembled in a fixed joint fork clamping mechanism assembly (A) at the middle position of a mounting bedplate (5 a), arranging a fixed joint fork of the intermediate shaft at the center position of a circular clamping disc (A2), and driving a driving arm (A4) to drive the circular clamping disc to rotate clockwise through a clamping cylinder (A3) to clamp a fixed joint fork by a clamping jaw (A5);
2) Starting a first push-pull cylinder (B1) to extend a sliding shaft clamping cylinder (B2), and driving a sliding shaft clamping jaw (B3) connected with the sliding shaft clamping cylinder to clamp a sliding shaft body of a steel ball type steering intermediate shaft (6) to be assembled;
3) Starting a second push-pull cylinder (B4) to extend a sliding pipe clamping cylinder (B5), and enabling the sliding pipe clamping cylinder to drive a sliding pipe clamp claw (B6) connected with the sliding pipe clamping cylinder to clamp a sliding pipe body of a steel ball type steering intermediate shaft to be assembled;
4) Confirming that a fixed joint fork, a sliding shaft and a sliding pipe are clamped, then starting a motor (7) for applying torque, applying torque to the clamped steel ball type steering intermediate shaft (6) to be assembled, wherein in the process, the sliding pipe generates a relative angle difference, at the moment, a sliding shaft clamping jaw (B3) drives a sliding shaft clamping cylinder (B2) provided with a floating mechanism to swing, and a sensor baffle (B7 a) arranged at the lower part of one side of the sliding shaft clamping cylinder compresses or loosens a main displacement sensor (B7B) and an auxiliary displacement sensor (B7 c);
5) In the step 4), the main displacement sensor (B7B) records the change of the displacement value, the auxiliary displacement sensor (B7 c) also records the displacement value, the recorded displacement value is compared with the displacement value of the main displacement sensor, when the difference value of the two groups of displacement sensors is larger than the set range, the deviation of the displacement detection is proved to exist, the maintenance is needed, and if the difference value of the two groups of displacement sensors is in the set range, the normal state of the displacement sensor is proved;
6) In step 5), the displacement value obtained by the main displacement sensor (B7B) is converted into an angle with the distance from the center of the displacement sensor to the center of the sliding pipe body as a radius, wherein the angle is the angle gap required to be tested, and the angle is specifically:
assuming that the compression amount of the displacement sensor is a when torque is applied in the forward and reverse directions, the angle clearance alpha=360 a/(50 pi) ° between the shaft tubes at the moment, so as to obtain the size of the steel ball which needs to be matched with the shaft tubes;
7) And 6) after the matched steel ball size is obtained in the step 6), the steel ball type intermediate shaft is installed, after the installation is completed, the air cylinders and clamping jaws at all positions are reversely loosened, the assembled steel ball type steering intermediate shaft is taken out, and the next operation is prepared.
3. The assembly method for the steel ball steering intermediate shaft according to claim 2, wherein the difference value of the two groups of displacement sensors in the step 5) is set to be 0-0.02 mm, and the difference value exceeds 0.02mm, and the inspection is judged to be needed.
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