Differential housing positioning hole position degree gauge

Abstract

This invention provides a differential housing positioning hole position measurement tool, including a differential housing and a position measurement simulation reference. The differential housing has mounting holes arranged in a ring on its surface, and two positioning holes for positioning. The position measurement simulation reference has two fixing holes with the same diameter as the mounting holes in the middle. A position measurement fixing shaft is inserted into the middle of the fixing holes to connect the position measurement simulation reference and the differential housing into a single unit. The position measurement simulation reference also has a detection hole with the same diameter as the positioning holes in the middle, and a position measurement detection shaft is inserted into the middle of the detection hole to detect the position accuracy of the positioning holes. This invention enables rapid batch detection of the differential housing positioning hole position accuracy, ensuring detection precision, and simultaneously detects the depth and diameter of the positioning holes, reducing the number of detection steps.

Description

Technical Field

[0001] This utility model relates to the field of differential housing positioning hole position measurement technology, and in particular to differential housing positioning hole position measurement tool. Background Technology

[0002] The differential system is an important power transmission device in a vehicle's transmission system. The differential assembly plays a crucial role in differential transmission. During the assembly of the differential assembly, the differential housing and the main reduction gear rely on locating holes to determine their relative positions. The positional accuracy of the differential housing locating holes is a critical assembly technical parameter. Currently, the measurement and control of this parameter in the industry is unsatisfactory: because this parameter can only be inspected using coordinate measuring machines (CMMs), which is sufficient for small-batch production, CMMs cannot guarantee inspection efficiency in large-batch production; existing differential locating hole inspections can only measure the positional accuracy, and subsequent inspections of their depth and diameter are also required. Utility Model Content

[0003] The purpose of this utility model is to provide a differential housing positioning hole position gauge. By setting a position simulation benchmark, when the position detection shaft can be inserted into the detection hole and the positioning hole at the same time, the position of the positioning hole is qualified, so as to solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a differential housing positioning hole position gauge, including a differential housing and a position simulation reference, wherein mounting holes are arranged in a ring on the surface of the differential housing, and two positioning holes for positioning are provided on the surface of the differential housing. The positional simulation reference has two fixing holes with the same diameter as the mounting holes in the middle. A positional fixing shaft is inserted into the middle of the fixing holes to connect the positional simulation reference and the differential housing into one piece. The positional accuracy simulation reference has a detection hole with the same diameter as the positioning hole in the middle, and a positional accuracy detection shaft is inserted into the middle of the detection hole to detect the positional accuracy of the positioning hole. The position detection shaft includes a mounting cylinder, a limiting platform, a detection component, a snap-fit ​​plate, a depth detection column, a return spring, an auxiliary ring, a connecting through hole, a fixing protrusion, a pressing protrusion, and a diameter detection column. The two ends of the mounting cylinder are respectively inserted into the positioning hole and the detection hole to detect the positional accuracy of the positioning hole. When the depth detection column moves downward, it detects the positional depth of the positioning hole. When the diameter detection column moves horizontally, it detects the diameter of the positioning hole.

[0005] Preferably, the position fixing shaft is a columnar structure with a large diameter in the middle and small diameters at both ends. When the position simulation reference is placed in the differential housing, the lower end of the position fixing shaft is inserted into the fixing hole for preliminary positioning and to constrain the position of the position simulation reference.

[0006] Preferably, the limiting platform is fixedly connected to the upper end of the mounting cylinder to limit the height of the position detection shaft. The detection component and the limiting platform are inserted into each other. The surfaces of the limiting platform and the detection component are provided with scales to display the depth and diameter of the detection hole.

[0007] Preferably, the buckle plate is connected to the lower end of the mounting cylinder via a buckle, the two ends of the depth detection column penetrate the buckle plate, the upper end of the depth detection column is fixedly connected to the detection element, the lower end of the depth detection column is flush with the lower end surface of the buckle plate, and when the detection element is pressed, the depth detection column pops out of the buckle plate to detect the depth of the detection hole.

[0008] Preferably, the detection element is a columnar structure with a small diameter at the top and a large diameter at the bottom. The reset spring is disposed between the detection element and the buckle plate. The depth detection column is located in the inner hole of the reset spring. When the detection element is pressed and moved, the reset spring is used to reset the detection element.

[0009] Preferably, the side end of the mounting cylinder is provided with a connecting through hole, and a diameter detection post is inserted into the middle of the connecting through hole. The diameter detection post is threadedly connected to the outer wall of the auxiliary ring. The top of the diameter detection post is flush with the outer surface of the mounting cylinder. When the diameter detection post pops out of the connecting through hole, the diameter of the positioning hole is detected.

[0010] Preferably, the auxiliary ring is sleeved in the middle of the detection piece, the fixed protrusion is located on the inner side wall of the auxiliary ring, and the extrusion protrusion is fixedly connected to the side end of the detection piece. When the extrusion protrusion extrudes the fixed protrusion, the diameter detection column pops out of the connecting through hole. The advantages of this invention are as follows: the gauge for detecting the position of the differential housing positioning hole is stable and reliable; moreover, after products enter mass production, coordinate measuring machines cannot meet the efficiency requirements for this dimension, and this gauge can be used to measure the position of the differential housing positioning hole more efficiently and quickly, reducing labor costs. When detecting the position of the positioning hole, the depth and diameter of the positioning hole can also be detected simultaneously, making the detection faster and more convenient. Attached Figure Description

[0011] Figure 1 This is an exploded connection diagram of the differential housing and positional accuracy simulation reference provided by this utility model.

[0012] Figure 2 This is a schematic diagram of the differential housing and positional accuracy simulation benchmark provided by this utility model.

[0013] Figure 3 This is a schematic diagram of the internal connection of the position detection shaft provided by this utility model.

[0014] Figure 4 This is a schematic diagram of the connection between the detection component and the auxiliary ring provided by this utility model.

[0015] In the diagram: 1. Position detection shaft, 101. Mounting cylinder, 102. Limiting stage, 103. Detection component, 104. Snap plate, 105. Depth detection post, 106. Return spring, 107. Auxiliary ring, 108. Connecting through hole, 109. Fixing protrusion, 110. Extrusion protrusion, 111. Diameter detection post. 2. Positioning fixed shaft, 3. Positioning simulation reference, 31. Fixing hole, 32. Detection hole, 4. Differential housing, 41. Mounting hole, 42. Positioning hole. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] See Figures 1-4 The present invention provides a differential housing positioning hole position gauge, including a differential housing 4 and a position simulation reference 3. The surface of the differential housing 4 has mounting holes 41 arranged in a ring, and the surface of the differential housing 4 has two positioning holes 42 for positioning. The fixed connection method can also be welding, riveting, screwing or gluing. The positional simulation reference 3 has two fixing holes 31 with the same diameter as the mounting hole 41 in the middle. A positional fixing shaft 2 is inserted into the middle of the fixing holes 31 to connect the positional simulation reference 3 and the differential housing 4 into one unit. The positional simulation reference 3 also has a detection hole 32 with the same diameter as the positioning hole 42 in the middle. A positional detection shaft 1 is inserted into the middle of the detection hole 32 to detect the positional accuracy of the positioning hole 42. The positional fixing shaft 2 is a columnar structure with a larger diameter in the middle and smaller diameters at both ends. When the positional simulation reference 3 is placed on the differential housing, the lower end of the positional fixing shaft 2 is inserted into the fixing hole 31 for initial positioning and to constrain the position of the positional simulation reference 3. When the positional simulation reference 3 is placed on the differential housing 4, the positional fixing shaft 2 is first inserted into the fixing hole 31 and the mounting hole 41 to limit and fix the positional simulation reference 3 on the differential housing 4. Next, insert the position detection shaft 1 into the detection hole 32 and the positioning hole 42. If both position detection shafts 1 can pass through easily, it is determined that the position of the positioning hole 42 of the detection object is correct, ensuring the machining quality of the differential housing, improving its assembly accuracy with related parts, and thus improving the operational stability and reliability of the entire mechanical system.

[0018] The position detection shaft 1 includes a mounting cylinder 101, a limiting stage 102, a detection element 103, a snap-fit ​​plate 104, a depth detection column 105, a return spring 106, an auxiliary ring 107, a connecting through hole 108, a fixing protrusion 109, a pressing protrusion 110, and a diameter detection column 111. The two ends of the mounting cylinder 101 are respectively inserted into the positioning hole 42 and the detection hole 32 to detect the position accuracy of the positioning hole 42. When the depth detection column 105 moves downward, it detects the position depth of the positioning hole 42. When the diameter detection column 111 moves horizontally, it detects the diameter of the positioning hole 42.

[0019] The limiting stage 102 is fixedly connected to the upper end of the mounting cylinder 101 and is used to limit the height of the position detection shaft 1. The detection element 103 and the limiting stage 102 are inserted into each other. The surfaces of the limiting stage 102 and the detection element 103 are marked with scales to display the depth and diameter of the detection hole 32. After the mounting cylinder 101 is inserted into the positioning hole 42, the limiting stage 102 will abut against the surface of the position simulation reference 3. If the limiting stage 102 cannot contact the position simulation reference 3, the depth of the positioning hole 42 is unqualified. The depth of the positioning hole 42 is detected by pressing the detection element 103, and the diameter of the positioning hole 42 is detected by rotating the detection element 103.

[0020] The snap plate 104 is connected to the lower end of the mounting cylinder 101 via a snap fastener. The depth detection post 105 extends through the snap plate 104 at both ends. The upper end of the depth detection post 105 is fixedly connected to the detection element 103, and the lower end of the depth detection post 105 is flush with the lower end surface of the snap plate 104. When the detection element 103 is pressed, the depth detection post 105 pops out of the snap plate 104 to detect the depth of the positioning hole 42. The detection element 103 is a columnar structure with a smaller upper diameter and a larger lower diameter. A return spring 106 is disposed between the detection element 103 and the snap plate 104. The depth detection post 105 is located in the inner hole of the return spring 106. When the detection element 103 is pressed and moved, the return spring 106 is used to reset the detection element 103. After the mounting cylinder 101 is inserted into the positioning hole 42, the lower end of the mounting cylinder 101 will abut against the lower inner wall of the positioning hole. By pressing the detection element 103, if the detection element 103 moves, the depth detection column 105 will pop out the buckle plate 104, and the depth of the positioning hole 42 will not meet the requirements, thus quickly obtaining the depth information of the positioning hole 42.

[0021] The mounting cylinder 101 has a connecting through hole 108 on its side. A diameter detection post 111 is inserted into the middle of the connecting through hole 108. The diameter detection post 111 is threaded to the outer wall of the auxiliary ring 107. The top of the diameter detection post 111 is flush with the outer surface of the mounting cylinder 101. When the diameter detection post 111 pops out of the connecting through hole 108, the diameter of the positioning hole 42 is detected. The auxiliary ring 107 is sleeved in the middle of the detection element 103. The fixing protrusion 109 is located on the inner wall of the auxiliary ring 107. The extrusion protrusion 110 is fixedly connected to the side of the detection element 103. When the extrusion protrusion 110 extrudes the fixing protrusion 109, the diameter detection post 111 pops out of the connecting through hole 108. After the mounting cylinder 101 is inserted into the positioning hole 42, the detection element 103 is rotated. The detection element 103 drives the extrusion protrusion to extrude the fixing protrusion. If the diameter detection post 111 pops out of the connecting through hole 108, the diameter of the positioning hole 42 is unqualified.

[0022] The positional simulation datum 3 is connected to the object being tested 4 to simulate the positional accuracy of the positioning hole 42. The positional accuracy fixing axis 2 is used to constrain the relative position of the positional accuracy simulation datum 3, ensuring that the detection hole 32 of the positional accuracy simulation datum 3 and the positioning hole 42 are aligned. Two positional accuracy detection axes 1 are used to detect the positioning hole 42. If both positional accuracy detection axes 1 can pass through easily, the positional accuracy of the positioning hole of the object being tested 4 is considered OK; otherwise, it is considered NG. After the mounting cylinder 101 of the positional accuracy detection axis 1 is inserted into the positioning hole 42, the inner wall of the mounting cylinder 101 is tightly attached to the inner wall of the positioning hole 42. If the detection component 103 can control the depth detection column 105 and the diameter detection column 111 to pop out, then the size of the positioning hole 42 is unqualified.

[0023] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A differential housing positioning hole position gauge, comprising a differential housing (4) and a position simulation reference (3), characterized in that: The differential housing (4) has mounting holes (41) arranged in a ring on its surface, and two positioning holes (42) for positioning are provided on its surface. The position simulation reference (3) has two fixing holes (31) with the same diameter as the mounting hole (41) in the middle. A position fixing shaft (2) is inserted in the middle of the fixing hole (31) to connect the position simulation reference (3) and the differential housing (4) into one piece. The positional simulation reference (3) has a detection hole (32) with the same diameter as the positioning hole (42) in the middle. A positional detection shaft (1) is inserted in the middle of the detection hole (32) to detect the positional accuracy of the positioning hole (42). The position detection shaft (1) includes a mounting cylinder (101), a limiting platform (102), a detection component (103), a buckle plate (104), a depth detection column (105), a reset spring (106), an auxiliary ring (107), a connecting through hole (108), a fixing protrusion (109), a pressing protrusion (110), and a diameter detection column (111). The two ends of the mounting cylinder (101) are respectively inserted into the positioning hole (42) and the detection hole (32) to detect the position accuracy of the positioning hole (42). When the depth detection column (105) moves downward, it detects the position depth of the positioning hole (42). When the diameter detection column (111) moves horizontally, it detects the diameter of the positioning hole (42).

2. The differential housing positioning hole position gauge according to claim 1, characterized in that: The position fixing shaft (2) is a columnar structure with a large diameter in the middle and small diameter at both ends. When the position simulation reference (3) is placed in the differential housing, the lower end of the position fixing shaft (2) is inserted into the fixing hole (31) for preliminary positioning and to constrain the position of the position simulation reference (3).

3. The differential housing positioning hole position gauge according to claim 1, characterized in that: The limiting platform (102) is fixedly connected to the upper end of the mounting cylinder (101) and is used to limit the height of the position detection shaft (1). The detection component (103) and the limiting platform (102) are inserted together. The surfaces of the limiting platform (102) and the detection component (103) are provided with scales to display the depth and diameter of the detection hole (32).

4. The differential housing positioning hole position gauge according to claim 1, characterized in that: The buckle plate (104) is connected to the lower end of the mounting cylinder (101) by buckle. The two ends of the depth detection column (105) pass through the buckle plate (104). The upper end of the depth detection column (105) is fixedly connected to the detection piece (103). The lower end of the depth detection column (105) is flush with the lower end surface of the buckle plate (104). When the detection piece (103) is pressed, the depth detection column (105) pops out of the buckle plate (104) to detect the depth of the detection hole (32).

5. A differential housing positioning hole position gauge according to claim 1, characterized in that: The detection element (103) is a columnar structure with a small diameter at the top and a large diameter at the bottom. The reset spring (106) is located between the detection element (103) and the buckle plate (104). The depth detection column (105) is located in the inner hole of the reset spring (106). When the detection element (103) is pressed and moved, the reset spring (106) is used to reset the detection element (103).

6. A differential housing positioning hole position gauge according to claim 1, characterized in that: The mounting cylinder (101) has a connecting through hole (108) on its side end. A diameter detection column (111) is inserted into the middle of the connecting through hole (108). The diameter detection column (111) is threaded to the outer wall of the auxiliary ring (107). The top of the diameter detection column (111) is flush with the outer surface of the mounting cylinder (101). When the diameter detection column (111) pops out of the connecting through hole (108), the diameter of the positioning hole (42) is detected.

7. A differential housing positioning hole position gauge according to claim 1, characterized in that: The auxiliary ring (107) is sleeved in the middle of the detection piece (103), the fixed protrusion (109) is located on the inner side wall of the auxiliary ring (107), and the extrusion protrusion (110) is fixedly connected to the side end of the detection piece (103). When the extrusion protrusion (110) extrudes the fixed protrusion (109), the diameter detection column (111) pops out of the connection through hole (108).

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