CN110715589B

CN110715589B - Detection tool for power steering gear with tie rod assembly

Info

Publication number: CN110715589B
Application number: CN201910963569.0A
Authority: CN
Inventors: 牛磊; 胡阳; 毕书浩; 李金梅; 唐小东; 牛家元
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2021-06-29
Anticipated expiration: 2039-10-11
Also published as: CN110715589A

Abstract

The invention aims to provide a detection tool with a tie rod assembly for a power steering gear, which is low in cost, high in efficiency and convenient to use. The power steering device with the tie rod assembly is placed on the supporting block, the positioning pin or the positioning hole of the reference block is aligned to the mounting hole of the fixing frame, the clamping mechanism clamps from the top to achieve clamping and positioning, then the left and right detection blocks, the shell detection mechanism and the oil pipe detection mechanism are utilized to detect the left and right ball heads respectively, the shell mounting hole and the oil pipe are qualified, namely, multiple indexes can be detected after one-time clamping and positioning, the operation is simple, meanwhile, the relative positions of all parts can be detected, and the detection precision is further improved. Compared with the three-coordinate dotting detection in the prior art, the method has the advantages of low cost, high efficiency and convenience in use.

Description

Detection tool for power steering gear with tie rod assembly

Technical Field

The invention relates to the technical field of automobile part detection, in particular to a detection tool for detecting a tie rod assembly of a power steering gear.

Background

The power steering gear with the tie rod assembly is used as an important part of an automobile chassis, and comprises a plurality of parts, and parts of the parts have complex structures and have requirements on spatial positions. Fig. 1 is a schematic structural diagram of a power steering gear tie rod assembly, spatial positions of parts such as a housing 1, an oil pipe 2, a fixing frame 3 and the like need to be detected, positions of a mounting hole 6 of the housing 1 and a mounting hole 7 on the fixing frame 3 also need to be detected, and meanwhile, the overall length of the power steering gear tie rod assembly is also a key point of detection. Especially, the left ball head 4 (composed of a left ball pin sleeve 4a and a left ball head arm 4b) and the right ball head 5 (composed of a right ball pin sleeve and a right ball head arm) are easy to install in a reverse-installation mode and are not easy to perceive when the power steering gear tie rod assembly is assembled, and the wrong-installation ball head is often found when the power steering gear tie rod assembly is installed on a chassis assembly line.

The existing power steering gear with tie rod assembly adopts three-coordinate dotting detection, namely, a measured part is placed in a measurement space range allowed by a three-coordinate measuring machine, the numerical values of points on the surface of the measured part at three spatial coordinate positions are accurately measured, the coordinate numerical values of the points are processed by a computer and are fitted to form measuring elements, such as a circle, a sphere, a cylinder, a cone, a curved surface and the like, and the shape, position tolerance and other geometric data of the power steering gear are obtained by a mathematical calculation method. The detection has high precision, but has low efficiency and high cost, and is difficult to meet the production requirement, thereby causing the waste of time and resources.

Disclosure of Invention

The invention aims to provide a detection tool with a tie rod assembly for a power steering gear, which is low in cost, high in efficiency and convenient to use.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides an utensil is examined to power steering ware area drag link assembly, the on-line screen storage device comprises a base, be provided with support piece and clamping mechanism on the base, the position department that corresponds with the mount is provided with the reference block that is used for the support mount, the up end of reference block has locating pin or locating hole that corresponds with the mounting hole position of mount, still be provided with on the base and be used for detecting left and right bulb position and the left and right detection piece of the direction of bending to and the casing detection mechanism who detects casing mounting hole position and be used for detecting the oil pipe position, the oil pipe detection mechanism of trend.

In the scheme, firstly, the power steering gear with the tie rod assembly is placed on the supporting block, the positioning pin or the positioning hole of the reference block is aligned with the mounting hole of the fixing frame, the clamping mechanism clamps from the top to realize clamping and positioning, then the left and right detection blocks are utilized, the shell detection mechanism and the oil pipe detection mechanism are utilized to respectively detect the left and right ball heads, the shell mounting hole and the oil pipe are qualified, namely, multiple indexes can be detected after one-time clamping and positioning, the operation is simple, meanwhile, the relative position among all the parts can be detected, and the detection precision is further improved. Compared with the three-coordinate dotting detection in the prior art, the method has the advantages of low cost, high efficiency and convenience in use.

Drawings

FIG. 1 is a schematic structural view of a power steering gear tie rod assembly;

FIG. 2 is a schematic overall structure diagram of the inspection device;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic structural diagram of the left and right detection blocks;

FIG. 5 is a view of the inspection device in use.

Detailed Description

As shown in fig. 2 and 5, the testing fixture for the power steering gear with the tie rod assembly comprises a base 10, wherein a supporting block 20 and a clamping mechanism 30 are arranged on the base 10, a reference block 40 for supporting a fixing frame 3 is arranged at a position corresponding to the fixing frame 3, a positioning pin 41 or a positioning hole 42 corresponding to the mounting hole 7 of the fixing frame 3 is arranged on the upper end surface of the reference block 40, left and right detecting

blocks

50 and 60 for detecting the positions of left and right bulbs 4 and 5 and the bending direction, a shell detecting mechanism 70 for detecting the position of the mounting hole 6 of a shell 1, and an oil pipe detecting mechanism 80 for detecting the position and the trend of an oil pipe 2 are further arranged on the base 10. Firstly, the power steering gear assembly with the tie rod is placed on the supporting block 20, the positioning pin 41 or the positioning hole 42 of the reference block 40 is aligned with the mounting hole 7 of the fixing frame 3, the clamping mechanism 30 clamps from the upper side to realize clamping and positioning, and then the left and right detection blocks 50 and 60, the shell detection mechanism 70 and the oil pipe detection mechanism 80 are utilized to respectively detect whether the left and right ball heads 4 and 5, the mounting hole 6 of the shell 1 and the oil pipe 2 are qualified or not, namely, multiple indexes can be detected after one-time clamping and positioning, the operation is simple, meanwhile, the relative positions of all parts can be detected, and the detection precision is further improved. Compared with the three-coordinate dotting detection in the prior art, the method has the advantages of low cost, high efficiency and convenience in use.

As shown in fig. 4, the left detection block 50 includes a block body 51, the upper end of the block body 51 is provided with a profiling groove 52, the profiling groove 52 includes a circular groove section 521 matched with the contour of the left ball pin sleeve 4a and a strip-shaped groove section 522 matched with the contour of the left ball head arm 4b, the center line of the strip-shaped groove section 522 is located outside the circle center of the circular groove section 521, the left and right detection blocks 50, 60 have the same structure and are in mirror symmetry, and the distance between the outermost sides of the profiling grooves 52 on the left and

right detection blocks

50, 60 is equal to the total length of the power steering gear tie rod assembly. Firstly, a left ball head 4 and a right ball head 5 of a power steering gear assembly with a tie rod are placed into a left detection block 50 and placed into a profiling groove 52, if the left ball head 4 and the right ball head 5 cannot be placed into the profiling groove, the total length is unqualified or the left ball head 4 and the right ball head 5 are placed reversely, and the left ball head and the right ball head can be correctly placed into the profiling groove 52 on the left detection block 50 and the right detection block 60 only under the conditions that the total length is qualified and the positions of the left ball head 4 and the right ball head 5 are correct, so that the left detection block 50 and the right detection block 60 with simple structures can detect the; because the left ball head 4 consists of the left ball pin sleeve 4a and the left ball head arm 4b, the profiling groove 52 comprises a circular groove section 521 matched with the contour of the left ball pin sleeve 4a and a strip-shaped groove section 522 matched with the contour of the left ball head arm 4b, and the left ball pin sleeve 4a and the left ball head arm 4b are in a point bending shape, the left ball head 4 and the right ball head 5 are prevented from being placed reversely by just utilizing the characteristic, and the bending direction is disturbed if the left ball head 4 is placed reversely, so that the left ball head 4 and the right ball head 5 cannot be placed into the profiling groove 52.

As shown in fig. 3, the housing detection mechanism 70 includes an upright column 71, one end of the turnover plate 72 is hinged to the upper end of the upright column 71 through a hinge shaft, a shaft core of the hinge shaft is arranged in the horizontal direction, the turnover plate 72 rotates around the hinge shaft to a detection position where a plate surface is located in the horizontal plane and directly above the housing 1 or to an avoidance position where the avoidance power steering device with a tie rod assembly is taken and placed, a through hole a corresponding to the mounting hole 6 on the housing 1 is formed in the plate surface of the turnover plate 72, and the detection pin 90 passes through the through hole a and the mounting hole 6 on the housing 1. In the process of taking and placing the power steering gear with the tie rod assembly, the turnover plate 72 rotates to an avoidance position to prevent interference with the taking and placing of the power steering gear with the tie rod assembly; after the picking and placing are finished, the turnover plate 72 rotates to the detection position, the detection pin 90 is inserted into the through hole a, if the detection pin 90 can also be inserted into the mounting hole 6 on the shell 1 at the same time, the position of the mounting hole 6 is qualified, otherwise, the position is unqualified.

Furthermore, the upper end of the upright column 71 is provided with a hinge seat 73, the hinge seat 73 is provided with a hole groove 731, the groove walls on two sides of the hinge shaft transverse hole groove 731 are arranged, when the detection position is detected, the groove walls on two sides and the turnover plate 72 form axial limiting fit of the hinge shaft, and the groove bottom and the turnover plate 72 form supporting fit. When the detection position is ensured, the turnover plate 72 moves left and right to generate deviation, and the detection accuracy of the mounting hole 6 is influenced.

Still further, the end of the turnover plate 72 is connected with a pressing plate 74, and the through hole a is arranged on the pressing plate 74.

Oil pipe detection mechanism 80 includes spliced pole 81, spliced pole 81's upper end fixedly connected with guide rail seat 82, the one end tip that guide pillar 83 closes on oil pipe 2 is provided with pick-up plate 84, pick-up plate 84 closes on the flange of oil pipe 2 one side and offers on the flange and coincide with oil pipe 2 position and profile detect groove 841, detect groove 841 notch and arrange towards oil pipe 2, guide pillar 83 slides along the guide rail on guide rail seat 82 and makes the drive to detect groove 841 and be close to or keep away from oil pipe 2. During operation, the guide post 83 slides along the guide rail on the guide rail seat 82 to enable the detection plate 84 to be far away from the position of the oil pipe 2, so that the detection plate is prevented from obstructing the putting in of the power steering gear tie rod assembly, after the power steering gear tie rod assembly is clamped, the guide post 83 slides along the guide rail on the guide rail seat 82 to enable the detection plate 84 to be close to the position of the oil pipe 2, if the oil pipe 2 can smoothly pass through the detection groove 841, the position of the oil pipe 2 is qualified, otherwise, the position of the oil pipe 2 is unqualifie. Here the width of the detection groove 841 is set slightly larger than the width of the oil pipe 2.

Preferably, the whole cuboid block that is of guide rail seat 82, square groove has been seted up at the middle part of block, the cross-section is square guide pillar 83 arranges the inslot in and constitutes the sliding fit of groove length direction, the spacing cooperation of other directions, guarantee the linear motion of guide pillar 83, take place the skew when preventing guide pillar 83 from removing, the influence detects the accuracy that groove 841 detected to oil pipe 2, the one end tip that oil pipe 2 was kept away from to guide pillar 83 still is provided with handle 831, the portion of gripping that removes with push-and-pull guide pillar 83 is held to operating personnel is provided to the setting of handle 831, be convenient for hard.

Because the power steering gear has two oil pipes 2 on the tie rod assembly, detect the groove 841 and be provided with 2, and the inner tank wall that detects the groove 841 is the inclined plane unanimous with oil pipe 2 trend.

Furthermore, the support block 20 is provided with a V-shaped support opening, so that the power steering gear assembly with the tie rod can be effectively prevented from rotating circumferentially, and the stability of fastening and fixing the power steering gear assembly with the tie rod is improved; the clamping mechanism 30 comprises a fixing block 31, the upper end of the fixing block 31 is provided with three quick clamps 32, the number of the quick clamps 32 is 3, the clamping heads 321 of two quick clamps 32 are matched with the upper end surface of the reference block 40 to clamp the upper plate surface of the fixing frame 3, and the clamping head 321 of the other quick clamp 32 is matched with the supporting block 20 to clamp the shell 1.

Because the power steering gear has two mounts 3 on the tie rod assembly, and there are 2 mounting holes 7 on every mount 3, so benchmark piece 40 is provided with 4, wherein set up on two benchmark pieces 40 of same mount 3 below is locating pin 41, set up on two benchmark pieces 40 of another mount 3 below is locating hole 42, its amount inserts in this locating hole 42 for the diamond pin, prevent to cross the location, four bights of the upper plate face of base 10 still are provided with handle 11 and are convenient for remove and examine utensil.

The checking fixture comprises the following operation steps: firstly, opening 3 quick clamps 32, rotating a turnover plate 72 to an avoidance position, pulling a guide post 83 outwards to enable the whole checking fixture to be in an open state, then placing a reference block 40 with a tie rod assembly of the power steering gear and the upper surface of a supporting block 20, placing left and right ball heads 4 and 5 into profiling grooves 52 on left and

right detection blocks

50 and 60, enabling 2 mounting holes 7 on one fixing frame 3 to be aligned with positioning pins 41 and placing the fixing frame into the fixing frame, inserting diamond pins into 2 mounting holes 7 on the other fixing frame 3, and if the diamond pins can be inserted into the mounting holes 7 and positioning holes 42 on the other two reference blocks 40, indicating that the positions of the mounting holes 7 on the fixing frame 3 are qualified, otherwise, the positions are unqualified. And then clamping the power steering gear tie rod assembly by using the quick clamp 32, rotating the turnover plate 72 to a detection position, inserting the detection pin 90 into the through hole a, and if the detection pin 90 can also be inserted into the mounting hole 6 on the shell 1 at the same time, indicating that the position of the mounting hole 6 is qualified, otherwise, indicating that the position is unqualified. Then the guide post 83 is pushed to slide along the guide rail on the guide rail seat 82 to make the detection plate 84 close to the position of the oil pipe 2, if the oil pipe 2 can pass through the detection groove 841 smoothly, the position of the oil pipe 2 is qualified, otherwise, the position is not qualified. So far, finish detecting, then open 3 swift clamps 32, rotate returning face plate 72 to dodging the position, outwards pull open guide pillar 83, make whole examine utensil be in the open mode, take out power steering ware area tie rod assembly.

Claims

1. The utility model provides a power steering takes utensil of examining of tie rod assembly, includes base (10), its characterized in that: a supporting block (20) and a clamping mechanism (30) are arranged on the base (10), a reference block (40) used for supporting the fixing frame (3) is arranged at a position corresponding to the fixing frame (3), a positioning pin (41) or a positioning hole (42) corresponding to the position of a mounting hole (7) of the fixing frame (3) is arranged on the upper end surface of the reference block (40), and the base (10) is also provided with a left detection block (50) and a right detection block (60) used for detecting the positions of the left ball head and the right ball head (4) and the bending direction, a shell detection mechanism (70) used for detecting the position of the mounting hole (6) of the shell (1) and an oil pipe detection mechanism (80) used for detecting the position and the trend of the oil pipe (2);

the shell detection mechanism (70) comprises an upright post (71), one end of a turnover plate (72) is hinged to the upper end of the upright post (71) through a hinge shaft, a shaft core of the hinge shaft is arranged in the horizontal direction, the turnover plate (72) rotates around the hinge shaft to a detection position with a plate surface positioned in the horizontal plane and positioned right above the shell (1) or rotates to an avoidance position for avoiding a power steering gear assembly with a tie rod, a through hole (a) corresponding to the position of a mounting hole (6) in the shell (1) is formed in the plate surface of the turnover plate (72), and a detection pin (90) penetrates through the through hole (a) and the mounting hole (6) in the shell (1);

oil pipe detection mechanism (80) are including spliced pole (81), the upper end fixedly connected with guide rail seat (82) of spliced pole (81), guide pillar (83) are close to the one end tip of oil pipe (2) and are provided with pick-up plate (84), pick-up plate (84) are close to and are offered on the flange of oil pipe (2) one side with anastomotic detection groove (841) of oil pipe (2) position and profile, it arranges towards oil pipe (2) to detect groove (841) notch, guide pillar (83) slide along the guide rail on guide rail seat (82) and make the drive to detect groove (841) and be close to or keep away from oil pipe (2).

2. The power steering gear tie rod assembly gauge according to claim 1, wherein: the left detection block (50) comprises a block body (51), a profiling groove (52) is formed in the upper end of the block body (51), the profiling groove (52) comprises a circular groove section (521) matched with the profile of the left ball pin sleeve (4a) and a strip-shaped groove section (522) matched with the profile of the left ball head arm (4b), the center line of the strip-shaped groove section (522) is located on the outer side of the circle center of the circular groove section (521), the left detection block (50) and the right detection block (60) are identical in structure and are in mirror symmetry, and the distance between the outermost sides of the profiling grooves (52) in the left detection block (50) and the right detection block (60) is equal to the total length of a power steering gear tie rod assembly.

3. The power steering gear tie rod assembly gauge according to claim 1, wherein: the upper end of the upright column (71) is provided with a hinged seat (73), a hole groove (731) is formed in the hinged seat (73), groove walls on two sides of the transverse hole groove (731) of the hinged shaft are arranged, when the detection position is detected, the groove walls on two sides and the turnover plate (72) form axial limiting fit of the hinged shaft, and the groove bottom and the turnover plate (72) form supporting fit.

4. The power steering gear tie rod assembly gauge according to claim 3, wherein: the end part of the turnover plate (72) is also connected with a pressure plate (74), and the through hole (a) is arranged on the pressure plate (74).

5. The power steering gear tie rod assembly gauge according to claim 1, wherein: the guide rail seat (82) is integrally in a cuboid block shape, a square groove is formed in the middle of the block body, the cross section of the guide pillar (83) which is square is arranged in the groove and forms sliding fit in the groove length direction and limiting fit in other directions, and a handle (831) is further arranged at the end part of one end, far away from the oil pipe (2), of the guide pillar (83).

6. The power steering gear tie rod assembly gauge according to claim 1, wherein: the number of the detection grooves (841) is 2, and the inner groove wall of the detection groove (841) is an inclined surface consistent with the trend of the oil pipe (2).

7. The power steering gear tie rod assembly gauge according to claim 1, wherein: the V-shaped support opening is formed in the support supporting block (20), the clamping mechanism (30) comprises fixing blocks (31), the upper ends of the fixing blocks (31) are provided with quick clamps (32), the number of the quick clamps (32) is 3, the clamping heads (321) of the two quick clamps (32) are matched with the upper end face of the reference block (40) to clamp the upper plate face of the fixing frame (3), and the clamping heads (321) of the other quick clamp (32) are matched with the support supporting block (20) to clamp the shell (1).

8. The power steering gear tie rod assembly gauge according to claim 1, wherein: the number of the reference blocks (40) is 4, wherein the two reference blocks (40) below the same fixing frame (3) are provided with positioning pins (41), the two reference blocks (40) below the other fixing frame (3) are provided with positioning holes (42), and the four corners of the upper plate surface of the base (10) are also provided with handles (11).