Comprehensive testing fixture for shifting fork

Abstract

The utility model discloses a shifting fork comprehensive testing fixture which comprises a base. The pedestal is provided with a mandrel used for detecting a central hole of a shifting fork, a positioning pin assembly arranged at the rear side of the mandrel and used for detecting a lateral hole of the shifting fork, a detection block matching shaft arranged at the front side of the mandrel in parallel, an interference detection column, and an opening detection block used for detecting an opening of the shifting fork and provided with a no-go end and a go end. The arc detection block is used for detecting a fork foot arc and is provided with a no-go end and a go end, the fork foot detection block is used for detecting the thickness of a fork foot shifting block and the distance between the end face of a fork foot and a shifting fork center hole, the shifting fork center hole is sleeved on the mandrel, the positioning pin assembly penetrates through the mandrel and is inserted into a shifting fork lateral hole, and the interference detection column is arranged on the outer side of the shifting fork. The detection block matching shaft is arranged between two fork feet of the shifting fork, and the arc detection block and the fork foot detection block are both provided with matching holes which can be sleeved on the detection block matching shaft. According to the utility model, a plurality of sizes of the shifting fork can be detected comprehensively, the detection operation is simple and reliable, the efficiency is high, and the qualified rate and the service life of the shifting fork are guaranteed.

Description

Technical Field

[0001] The utility model relates to a comprehensive inspection tool for a shift fork, which is used for inspecting the shift fork. Background Art

[0002] The control of the car is mainly achieved through the cooperation of the gearbox and the shifter, that is, the gear shift of the speed phase is changed by the shifting of the shifter, so the speed is switched by the differential ratio. The shift fork of the car shifter is an important component of the associated reducer. The reducer is controlled by the shifting of the shift fork. Therefore, the performance of the shift fork is one of the important factors affecting the control performance of the car. The processing of the shift fork requires many steps and processes, so processing errors are prone to occur in the numerous processing steps, especially the vibration and jamming of the equipment can affect the processing accuracy of the shift fork. For this reason, after the processing is completed, a series of tests need to be carried out on the shift fork to ensure the qualified rate and service life of the shift fork, including the distance between the center hole of the fork and the fork foot, the thickness of the fork foot, the distance between the fork foot openings, the arc of the fork and other parameters. Because the position dimensions of each functional point are spatial dimensions, the detection of some key dimensions still relies on three-coordinate detection, which is difficult to detect and the detection speed is slow, and it is impossible to achieve rapid detection of batch products. Moreover, the detection function of the existing shift fork inspection tool is relatively single, and multiple parameters cannot be comprehensively detected on one inspection tool, resulting in low detection efficiency. Utility Model Content

[0003] The utility model discloses a comprehensive inspection tool for the shift fork, which realizes comprehensive inspection of multiple sizes of the shift fork in one inspection tool. The inspection operation is simple, reliable and efficient. The tool can realize rapid inspection of batch products and is suitable for rapid quality inspection of batch finished products. The tool reduces the error rate of product inspection and ensures the qualified rate and service life of the shift fork.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The shift fork integrated inspection tool comprises a base, characterized in that: the base is equipped with a spindle for detecting the center hole of the shift fork, a positioning pin assembly arranged at the rear side of the spindle for detecting the lateral hole of the shift fork, a detection block matching shaft arranged in parallel at the front side of the spindle, an interference detection column for detecting the width of the outer side of the shift fork, an opening detection block for detecting the opening of the shift fork and having a stop end and a through end, an arc detection block for detecting the arc of the fork foot and having a stop end and a through end, and a fork foot detection block for detecting the thickness of the fork foot shift block and the distance between the fork foot end face and the center hole of the shift fork, the center hole of the shift fork is sleeved on the spindle, the positioning pin assembly passes through the spindle and is inserted into the lateral hole of the shift fork, the interference detection column is arranged on the outer side of the shift fork, the detection block matching shaft is arranged between the two fork feet of the shift fork, and matching holes that can be sleeved on the detection block matching shaft are provided on the arc detection block and the fork foot detection block.

[0006] Preferably, the positioning pin assembly includes a convex positioning seat and a positioning pin passing through the positioning seat, and the positioning pin passes through the spindle forward and is inserted into the lateral hole of the shift fork.

[0007] Preferably, the inspection block mating shaft comprises a support section fixed on the base, a threaded section integrally formed on the top of the support section and having a smaller diameter than the support section, and a nut mating with the threaded section, and the mating hole can be sleeved on the threaded section.

[0008] Preferably, the opening check block is horizontally arranged on the side of the base, and the opening check block consists of an opening through-end block and an opening stop-end block integrally formed on the bottom surface of the opening through-end block, the through-end of the opening check block refers to the opening through-end block, and the stop-end of the opening check block refers to the opening stop-end block, the length of the opening through-end block is smaller than the length of the opening stop-end block, and the length difference between the two is 1±0.2 mm.

[0009] Preferably, the fork leg check block is in the shape of an elongated strip, and its end face is an arc surface matching with the fork leg end face. An opening matching with the fork leg shifting block is provided at one end of the fork leg check block, and the fork leg check block is sleeved on the threaded section through a matching hole.

[0010] Preferably, a support frame for placing an arc check block is provided on the base, and the arc check block consists of an arc through end block and an arc stop end block integrally formed on the bottom surface of the arc through end block, the through end of the arc check block refers to the arc through end block, and the stop end refers to the arc stop end block, the centers of the arc through end block and the arc stop end block are aligned, both ends of the arc through end block and the arc stop end block are arc surfaces that cooperate with the end face of the fork foot, the length of the arc through end block is smaller than the length of the arc stop end block, and the length difference between the two is 1±0.2 mm.

[0011] Preferably, the number of the interference detection columns is three, two interference detection columns are respectively arranged on the left and right sides of the spindle, and the other interference detection column is arranged at the end of the fork leg.

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

[0013] The comprehensive inspection tool for the shift fork of the present utility model installs a mandrel, a positioning pin assembly, a checking block mating shaft, an interference detection column, an open checking block, an arc checking block, and a fork foot checking block on the base according to the set dimensions of the shift fork to detect the dimensions of the shift fork. During the inspection, first, extend the opening of the shift fork to the open checking block, and judge whether the size of the shift fork opening is qualified according to the mating situation between the shift fork opening and the through end and stop end of the open checking block; then, sleeve the center hole of the shift fork on the mandrel, and insert the positioning pin assembly through the mandrel and into the side hole of the shift fork, and judge whether the sizes of the center hole, side hole, and outer width of the shift fork are qualified according to the mating situation between the shift fork and the mandrel, positioning pin assembly, and interference detection column; then, sleeve the fork foot checking block on the checking block mating shaft, the fork foot checking block mates with the fork foot end, rotate the fork foot checking block, and judge whether the thickness of the fork foot and the distance between the fork foot end face and the center hole of the shift fork are qualified according to whether there is interference with the shift fork during the rotation process; then, remove the fork foot checking block from the checking block mating shaft, sleeve the arc checking block on the checking block mating shaft, the arc checking block mates with the fork foot end, and judge whether the arc size of the shift fork is qualified according to the rotation situation of the stop end and through end of the arc checking block on the checking block mating shaft; it realizes the comprehensive inspection of multiple dimensions of the shift fork on one inspection tool, the inspection operation is simple, reliable, and efficient, can realize the rapid inspection of batch products, is suitable for the rapid quality inspection of batch finished products, reduces the error rate of product inspection, and ensures the qualification rate and service life of the shift fork. Brief Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the comprehensive inspection tool for the shift fork of the present utility model.

[0015] Figure 2 It is a schematic diagram of the shift fork installed on the comprehensive inspection tool for the shift fork.

[0016] Figure 3 It is a schematic diagram of the comprehensive inspection tool for the shift fork when the arc checking block is installed on the checking block mating shaft and mates with the fork foot end. Detailed Embodiment

[0017] The following Figures 1 to 3 makes a detailed description of the embodiments of the present utility model.

[0018] The shift fork integrated inspection tool comprises a base 1, characterized in that: the base 1 is equipped with a spindle 2 for detecting the center hole of the shift fork, a positioning pin assembly 3 arranged at the rear side of the spindle 2 for detecting the lateral hole of the shift fork, a detection block matching shaft arranged parallel to the front side of the spindle 1, an interference detection column for detecting the width of the outer side of the shift fork, an opening detection block 6 for detecting the opening of the shift fork and having a stop end and a through end, an arc detection block 7 for detecting the arc of the fork foot and having a stop end and a through end, and a fork foot detection block 8 for detecting the thickness of the fork foot shift block and the distance between the fork foot end face and the center hole of the shift fork, the center hole of the shift fork is sleeved on the spindle 2, the positioning pin assembly 3 passes through the spindle 1 and is inserted into the lateral hole of the shift fork, the interference detection column 5 is arranged on the outside of the shift fork 100, the detection block matching shaft 4 is arranged between the two fork feet of the shift fork 100, and the arc detection block 7 and the fork foot detection block 8 are both provided with matching holes that can be sleeved on the detection block matching shaft 4.

[0019] The above-mentioned comprehensive inspection tool for the shift fork is equipped with a spindle 2, a positioning pin assembly 3, a detection block matching shaft 4, an interference detection column 5, an opening detection block 6, an arc detection block 7 and a fork foot detection block 8 on the base according to the set size of the shift fork. During the inspection, the shift fork opening is first extended to the opening detection block 6, and the size of the shift fork opening is judged to be qualified according to the matching condition between the shift fork opening and the through end and the stop end of the opening detection block 6; then the shift fork center hole of the shift fork is sleeved on the spindle 2, and the positioning pin assembly 3 is inserted into the spindle and inserted into the side hole of the shift fork, and the size of the center hole, side hole and outer width of the shift fork are judged to be qualified according to the matching condition between the shift fork and the spindle 2, the positioning pin assembly 3 and the interference detection column 5; then the fork foot detection block 8 is sleeved on the detection block matching block On the coupling shaft 4, the fork foot inspection block 8 cooperates with the end of the fork foot, and the fork foot inspection block 8 is rotated. According to whether there is interference with the shift fork during the rotation process, it is judged whether the fork foot thickness and the distance size between the fork foot end face and the shift fork center hole are qualified; then, the fork foot inspection block 8 is removed from the inspection block matching shaft 4, and the arc inspection block 7 is sleeved on the inspection block matching shaft 4. The arc inspection block 7 cooperates with the fork foot end, and according to the rotation of the stop end and the through end of the arc inspection block 7 on the inspection block matching shaft 4, it is judged whether the arc size of the shift fork is qualified; it realizes comprehensive inspection of multiple dimensions of the shift fork in one inspection, and the inspection operation is simple, reliable and efficient, which can realize rapid inspection of batch products, is suitable for rapid quality inspection of batch finished products, reduces the error rate of product inspection, and ensures the qualified rate and service life of the shift fork.

[0020] The positioning pin assembly 3 includes a convex positioning seat 31, a positioning pin 32 inserted on the positioning seat 31, and the positioning pin 32 passes through the spindle 2 forward and is inserted into the lateral hole of the shift fork. If there is no interference with the insertion process of the positioning pin 32, it means that the size of the lateral hole of the shift fork is qualified, otherwise it is unqualified. If there is no interference with the spindle when the center hole of the shift fork is sleeved on the spindle 2, it means that the size of the center hole of the shift fork is qualified, otherwise it is unqualified.

[0021] Among them, the inspection block mating shaft 4 includes a support section 41 fixed on the base 1, a threaded section 42 integrally formed on the top of the support section 41 and having a diameter smaller than that of the support section 41, and a nut 43 mating with the threaded section 42. The mating hole can be sleeved on the threaded section 42. The inspection block mating shaft 4 can respectively cooperate with the fork foot inspection block 8 and the arc inspection block 9 to respectively detect the corresponding dimensions on the shift fork, improving the inspection efficiency.

[0022] Among them, the open inspection block 6 is horizontally arranged on the side surface of the base 1. The open inspection block 61 is composed of an open through-end block 61 and an open stop-end block 62 integrally formed on the bottom surface of the open through-end block. The through-end of the open inspection block refers to the open through-end block 61, and the stop-end of the open inspection block refers to the open stop-end block 62. The length of the open through-end block 61 is smaller than the length of the open stop-end block 62, and the difference in their lengths is 1 ± 0.2 mm. When detecting the shift fork opening, if the open through-end block 61 can extend into the shift fork opening but the open stop-end block 62 cannot extend into the shift fork opening, forming a detection result of through-end through and stop-end stop, then the size of the shift fork opening is qualified; otherwise, it is unqualified.

[0023] Among them, the fork foot inspection block 8 is in a long strip shape, and the end face is an arc surface that mates with the fork foot end face. An opening 81 for mating with the fork foot block is provided at one end of the fork foot inspection block 8. The fork foot inspection block 8 is sleeved on the threaded section 42 through the mating hole. The fork foot inspection block 8 is used to detect the thickness of the fork foot block and the distance between the fork foot end face and the center hole of the shift fork. The shift fork is sleeved on the mandrel 2 and the positioning pin 32 is inserted in place. The fork foot inspection block 8 is sleeved on the threaded section 42, and the fork foot end just mates with the fork foot inspection block 8. The fork foot block extends into the opening 81. Rotate the fork foot inspection block 8. If the fork foot inspection block 8 does not interfere with the shift fork, it indicates that the thickness of the fork foot block and the distance between the fork foot end face and the center hole of the shift fork are qualified; otherwise, they are unqualified.

[0024] Among them, a support frame 9 for placing the arc gauge block 7 is provided on the base 1. The arc gauge block 7 is composed of an arc through-end block 71 and an arc stop-end block 72 integrally formed on the bottom surface of the arc through-end block 71. The through-end of the arc gauge block 7 refers to the arc through-end block 71, and the stop-end refers to the arc stop-end block 72. The centers of the arc through-end block 71 and the arc stop-end block 72 are aligned. Both ends of the arc through-end block 71 and the arc stop-end block 72 are arc surfaces that cooperate with the fork foot end face. The length of the arc through-end block 71 is less than the length of the arc stop-end block 72, and the difference in their lengths is 1 ± 0.2 mm. The support frame 9 is used to place the arc gauge block 7 and store it when the arc gauge block 7 is not being detected. After the fork foot gauge block 8 is detected, the fork foot detection block 8 is removed from the gauge block mating shaft 4, and then the arc gauge block 7 is sleeved on the gauge block mating shaft 4. The arc through-end block 71 is facing up and cooperating with the fork foot end. If the arc detection block 71 can rotate, then the arc gauge block 7 is turned over so that the arc stop-end block 72 is facing up and cooperating with the fork foot end. If the arc detection block 71 cannot rotate, and a detection result of through-end through and stop-end stop is formed, it indicates that the fork arc dimension is qualified; otherwise, it is unqualified.

[0025] Among them, the number of the interference detection columns 5 is three. Two interference detection columns 5 are respectively arranged on the left and right sides of the mandrel 2, and the other interference detection column 5 is arranged at the fork foot end. When the fork center hole is sleeved on the mandrel 2, if none of the three interference detection columns 5 interfere with the fork, it indicates that the outer width dimension of the fork is qualified; otherwise, it is unqualified.

[0026] The above combines the accompanying drawings to completely describe the technical solutions of the embodiments of the present invention. It should be noted that the described embodiments are only a part of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts fall within the scope of protection of the present invention.

Claims

1. A comprehensive inspection fixture for a shift fork, including a base, characterized in that: The base is equipped with a spindle for detecting the center hole of the shift fork, a positioning pin assembly arranged at the rear side of the spindle for detecting the lateral hole of the shift fork, a detection block matching shaft arranged parallel to the front side of the spindle, an interference detection column for detecting the width of the outer side of the shift fork, an opening detection block for detecting the opening of the shift fork and having a stop end and a through end, an arc detection block for detecting the arc of the fork foot and having a stop end and a through end, and a fork foot detection block for detecting the thickness of the fork foot block and the distance between the fork foot end face and the center hole of the shift fork. The center hole of the shift fork is sleeved on the spindle, the positioning pin assembly passes through the spindle and is inserted into the lateral hole of the shift fork, the interference detection column is arranged on the outer side of the shift fork, the detection block matching shaft is arranged between the two fork feet of the shift fork, and matching holes that can be sleeved on the detection block matching shaft are provided on the arc detection block and the fork foot detection block.

2. The shift fork comprehensive inspection tool according to claim 1 is characterized in that: The positioning pin assembly comprises a convex positioning seat and a positioning pin passing through the positioning seat. The positioning pin passes through the spindle forward and is inserted into the lateral hole of the shift fork.

3. The shift fork comprehensive inspection tool according to claim 1 is characterized in that: The inspection block matching shaft comprises a support section fixed on the base, a threaded section integrally formed on the top of the support section and having a smaller diameter than the support section, and a nut matching the threaded section, and a matching hole can be sleeved on the threaded section.

4. The shift fork comprehensive inspection tool according to claim 1, characterized in that: The opening check block is horizontally arranged on the side of the base, and the opening check block is composed of an opening through-end block and an opening stop-end block integrally formed on the bottom surface of the opening through-end block. The through-end of the opening check block refers to the opening through-end block, and the stop-end of the opening check block refers to the opening stop-end block. The length of the opening through-end block is smaller than the length of the opening stop-end block, and the length difference between the two is 1±0.2 mm.

5. The shift fork comprehensive inspection tool according to claim 3 is characterized in that: The fork leg check block is in the shape of a long strip, and its end face is an arc surface matched with the fork leg end face. One end of the fork leg check block is provided with an opening matched with the fork leg shift block, and the fork leg check block is sleeved on the threaded section through a matching hole.

6. The shift fork comprehensive inspection tool according to claim 3 is characterized in that: A support frame for placing an arc check block is provided on the base. The arc check block consists of an arc through end block and an arc stop end block integrally formed on the bottom surface of the arc through end block. The through end of the arc check block refers to the arc through end block, and the stop end refers to the arc stop end block. The centers of the arc through end block and the arc stop end block are aligned. Both ends of the arc through end block and the arc stop end block are arc surfaces that cooperate with the end faces of the fork legs. The length of the arc through end block is smaller than that of the arc stop end block, and the length difference between the two is 1±0.2 mm.

7. The shift fork comprehensive inspection tool according to claim 1, characterized in that: The number of the interference detection columns is three, two of which are respectively arranged on the left and right sides of the spindle, and the other interference detection column is arranged at the end of the fork leg.

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