A special assembly device for fork groove section

Abstract

The present invention discloses a special assembly device for a fork slot section, comprising a base plate, a main support body, an inner ring assembly support mechanism, a steel ball flexible support mechanism, and a steel ball press-fitting mechanism; the steel ball press-fitting mechanism comprises a rotatable cam plate fixed with three limit screws and a guide plate for mounting six steel ball pressure plates; rollers are fixed to the ends of each steel ball pressure plate, and the cam plate has three annular grooves that rotate within the range of the limit screws and six inclined straight grooves that push the rollers to move radially; the inner ring assembly support mechanism is located at the center of the main support body and supports the inner ring assembly; the steel ball flexible support mechanism comprises six groups of support assemblies evenly arranged around the central axis of the inner ring assembly support mechanism, the lower ends of the six groups of support assemblies being fixed to the main support body, and the upper ends being steel ball guide blocks, the steel balls being placed in the steel ball guide blocks and being mounted in the inner ring assembly by the steel ball pressure plates. The present invention has high assembly accuracy, stable and reliable assembly quality, high assembly efficiency, reduced labor intensity, and is not prone to missing assembly.

Description

Technical Field

[0001] The invention belongs to the field of processing and manufacturing of fork groove sections, and relates to a special assembly device for fork groove sections. Background Art

[0002] The fork joint is a critical component of high-speed driveshafts, particularly in mid-range and high-end sedans, for transmitting power and torque. To improve axle durability and reduce noise, vibration, and harshness (NVH), the majority of high-end sedan driveshafts feature a fork joint design. Currently, fork joints are assembled manually, with assembly quality and efficiency relying heavily on operator proficiency. Furthermore, manual assembly of fork joints is inefficient, difficult, labor-intensive, and prone to errors. Furthermore, with increasing demands for vehicle safety and the gradual increase in axle production, manual assembly of these parts is no longer sufficient to meet market demand. Summary of the Invention

[0003] The purpose of the present invention is to solve the above problems existing in the prior art and to provide a special assembly device for fork groove sections. The device can be used to assemble fork groove sections with high assembly accuracy, stable and reliable assembly quality, high assembly efficiency, reduced labor intensity of workers, and less prone to missing assembly.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a special assembly device for fork groove section, comprising a base plate, a workbench, a main support body, an inner ring assembly support mechanism, a steel ball flexible support mechanism and a steel ball press-fitting mechanism; the main support body is fixed to the base plate, and the base plate is fixed to the workbench;

[0005] The steel ball pressing mechanism includes a cam plate with a mounting hole in the center matching the outer diameter of the outer ring port of the fork groove section, a guide plate and a cover plate, handles symmetrically fixed at both ends of the cam plate, six steel ball pressure plates, rollers fixed at the ends of each steel ball pressure plate, and limit screws; the guide plate is fixed on the main support body, and the cover plate is fixed on the guide plate; the upper end surface of the cam plate is evenly distributed with six inclined straight grooves, and the edge of its upper end surface is opened with three annular grooves located on the same circumference; three limit screws located at the starting ends of the annular grooves are fixed on the guide plate, and the six steel ball pressure plates are respectively located in the radial track grooves evenly opened on the upper end of the guide plate, and the rollers are respectively located at the starting ends of the six inclined straight grooves; the cam plate rotates, the annular groove rotates, the limit screw moves from the starting end to the end of the annular groove, and the inclined straight groove rotates at the same time, and the roller is pushed from the starting end to the end of the inclined straight groove by the inclined straight groove, driving the steel ball pressure plate to move radially and push the steel ball into the window of the retaining frame of the inner ring assembly;

[0006] The inner ring assembly support mechanism is arranged in the center of the main support body, the cam plate, the guide plate and the mounting holes of the cover plate, and includes a support block fixed to the main support body and a positioning block fixed to the upper end surface of the support block, and the positioning block cooperates with the inner hole of the inner ring assembly of the fork groove section;

[0007] The steel ball flexible support mechanism includes six groups of support components evenly arranged around the central axis of the inner ring assembly support mechanism, each group of support components includes a spring installed on the support block, a slide rod installed on the upper end of the spring, and a steel ball guide block; a vertical long groove is opened on the upper end of the slide rod, and its upper end is inserted into the sliding groove with a micro-gap fit opened on the lower end surface of the steel ball guide block, and is top-connected by a limit screw fixed on the side wall of the sliding groove of the steel ball guide block; the upper end surface of the steel ball guide block is an arc groove I that matches the steel ball; after the steel ball is placed in the arc groove I, it is aligned with the steel ball installation window of the inner ring assembly retainer, and the steel ball pressure plate can slide radially along the upper end surface of the arc groove I.

[0008] Further preferably, the inner ring assembly support mechanism also includes an adjusting gasket, the edge of the adjusting gasket protrudes upward to form a step that just supports the lower end of the retaining frame of the inner ring assembly; a long screw placed in the countersunk hole on the upper end face of the support block fixes the positioning block, the adjusting gasket, the support block and the main support body together, and there are positioning pins between the positioning block and the adjusting gasket, and between the support block and the main support body.

[0009] Further preferably, a wear-resistant arc block with an upper end surface of an arc groove II matching the steel ball is fixed in the arc groove I of the steel ball guide block. The installation of the wear-resistant arc block increases the service life of the steel ball guide block while minimizing the manufacturing cost.

[0010] When in use, the inner ring assembly of the fork groove section is placed on the inner ring assembly support mechanism, and the six steel balls are placed on the six steel ball guide blocks respectively. The handle is turned, the cam disc rotates, and the steel ball pressure plate moves radially to push the steel balls into the window of the retaining frame of the inner ring assembly. The handle is turned, and the cam disc returns to its original position. The outer ring of the fork groove section is held by the hand and tilted into the mounting holes of the cam disc, guide disc and cover plate. The steel balls and inner ring assembly can be assembled into the cavity of the outer ring. The device of the present invention is used to assemble the fork groove section with high assembly accuracy, stable and reliable assembly quality, high assembly efficiency, reduced labor intensity of workers, and less prone to missing assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Schematic diagram of the internal structure of the present invention;

[0012] Figure 2 It is a top view schematic diagram of the present invention;

[0013] Figure 3 It is a structural schematic diagram of the cam plate and the guide plate in the present invention. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to specific embodiments.

[0015] like Figures 1 to 3As shown, this embodiment includes a base plate 6, a workbench 5, a main support body 8, an inner ring assembly support mechanism 9, a steel ball flexible support mechanism 3 and a steel ball pressing mechanism 1. The main support body 8 is fixed to the base plate 6 by a screw 4, and the base plate 6 is fixed to the workbench 5 by another screw 7. The steel ball pressing mechanism 1 includes a cam plate 1.5 with a mounting hole in the center that matches the outer diameter of the port of the fork groove section outer ring 12, a guide plate 1.8 and a cover plate 1.4, a handle 1.1 symmetrically fixed to both ends of the cam plate 1.5, six steel ball pressure plates 1.2, a roller 1.9 fixed to the end of each steel ball pressure plate 1.2, and a limit screw 1.6. The guide plate 1.8 is fixed to the main support body 8 by a third screw 2, and the cover plate 1.4 is fixed to the guide plate 1.8 by a fourth screw 1.3 that passes through the through hole of the cam plate 1.5. The upper end surface of the cam disc 1.5 is evenly distributed with six inclined straight grooves 14, and its upper edge is also defined by three annular grooves 13 located on the same circumference. Three stop screws 1.6 located at the starting ends of the annular grooves are fixed to the guide disc 1.8 by nuts 1.7 positioned within grooves on its bottom surface. Six steel ball pressure plates 1.2 are positioned within radial track grooves evenly distributed on the upper end of the guide disc 1.8, and rollers 1.9 are positioned at the starting ends of the six inclined straight grooves. As the cam disc 1.5 rotates, the annular grooves rotate, and the stop screws 1.6 move from the starting end of the annular groove to the end. Simultaneously, the inclined straight grooves rotate, and the rollers 1.9, driven by the inclined straight grooves, move from the starting end to the end of the inclined straight grooves. This drives the steel ball pressure plates 1.2 in radial motion, pushing the steel balls 10 into the windows of the retainer of the inner ring assembly 11. The inner ring assembly support mechanism 9 is arranged in the center of the main support body 8, the cam plate 1.5, the guide plate 1.8 and the mounting holes of the cover plate 1.4, and includes a support block 9.3 fixed to the main support body 8, a positioning block 9.1 fixed to the upper end face of the support block 9.3, and the positioning block 9.1 cooperates with the inner hole of the inner ring assembly of the fork groove section. Preferably, the inner ring assembly support mechanism 9 also includes an adjustment gasket 9.2, the edge of which protrudes upward to form a step that just supports the lower end of the retaining frame of the inner ring assembly; a long screw 9.4 placed in the countersunk hole on the upper end face of the support block 9.3 fixes the positioning block 9.1, the adjustment gasket 9.2, the support block 9.3 and the main support body 8 together, and there are positioning pins 9.5 between the positioning block 9.1 and the adjustment gasket 9.2, and between the support block 9.3 and the main support body 8.The steel ball flexible support mechanism 3 includes six groups of support components evenly arranged around the central axis of the inner ring assembly support mechanism 9, each group of support components includes a support block 3.5 whose lower end is threadedly fixed to the upper end of the main support body 8, a spring 3.4 installed on the support block 3.5, a slide rod 3.3 installed on the upper end of the spring 3.4, and a steel ball guide block 3.1; the upper end of the slide rod 3.3 is provided with a vertical long groove, and its upper end is inserted into the sliding groove with a micro-gap fit opened on the lower end surface of the steel ball guide block 3.1, and is top-connected by a limit screw 3.2 fixed on the side wall of the sliding groove of the steel ball guide block 3.1; the upper end surface of the steel ball guide block 3.1 is an arc groove I that matches the steel ball; after the steel ball is placed in the arc groove I, it is aligned with the steel ball installation window of the inner ring assembly retainer, and the steel ball pressure plate 1.2 can slide radially along the upper end surface of the arc groove I. Preferably, a wear-resistant arc-shaped block having an upper end surface of an arc-shaped groove II matching the steel ball is fixed in the arc-shaped groove I of the steel ball guide block 3.1.

[0016] The above-described embodiments are only preferred and exemplary and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A special assembly device for a fork groove section, characterized in that: It includes a base plate, a workbench, a main support body, an inner ring assembly support mechanism, a steel ball flexible support mechanism and a steel ball pressing mechanism; the main support body is fixed on the base plate, and the base plate is fixed on the workbench; The steel ball pressing mechanism includes a cam plate with a mounting hole in the center matching the outer diameter of the outer ring port of the fork groove section, a guide plate and a cover plate, handles symmetrically fixed at both ends of the cam plate, six steel ball pressure plates, rollers fixed at the ends of each steel ball pressure plate, and limit screws; the guide plate is fixed on the main support body, and the cover plate is fixed on the guide plate; the upper end surface of the cam plate is evenly distributed with six inclined straight grooves, and the edge of its upper end surface is opened with three annular grooves located on the same circumference; three limit screws located at the starting ends of the annular grooves are fixed on the guide plate, and the six steel ball pressure plates are respectively located in the radial track grooves evenly opened on the upper end of the guide plate, and the rollers are respectively located at the starting ends of the six inclined straight grooves; the cam plate rotates, the annular groove rotates, the limit screw moves from the starting end to the end of the annular groove, and the inclined straight groove rotates at the same time, and the roller is pushed from the starting end to the end of the inclined straight groove by the inclined straight groove, driving the steel ball pressure plate to move radially and push the steel ball into the window of the retaining frame of the inner ring assembly; The inner ring assembly support mechanism is arranged in the center of the main support body, the cam plate, the guide plate and the mounting holes of the cover plate, and includes a support block fixed to the main support body and a positioning block fixed to the upper end surface of the support block, and the positioning block cooperates with the inner hole of the inner ring assembly of the fork groove section; The steel ball flexible support mechanism includes six groups of support components evenly arranged around the central axis of the inner ring assembly support mechanism, each group of support components includes a support block whose lower end is fixed to the upper end of the main support body, a spring installed on the support block, a slide rod installed on the upper end of the spring, and a steel ball guide block; a vertical long groove is opened on the upper end of the slide rod, and its upper end is inserted into the sliding groove with a micro-gap fit opened on the lower end surface of the steel ball guide block, and is top-connected by a limit screw fixed on the side wall of the sliding groove of the steel ball guide block; the upper end surface of the steel ball guide block is an arc groove I that matches the steel ball; after the steel ball is placed in the arc groove I, it is aligned with the steel ball installation window of the inner ring assembly retainer, and the steel ball pressure plate can slide radially along the upper end surface of the arc groove I.

2. The fork groove section dedicated assembly device according to claim 1, characterized in that: The inner ring assembly support mechanism also includes an adjusting gasket, the edge of which protrudes upward to form a step that just supports the lower end of the retaining frame of the inner ring assembly; a long screw placed in the countersunk hole on the upper end surface of the support block fixes the positioning block, adjusting gasket, support block and main support body together, and there are positioning pins between the positioning block and the adjusting gasket, and between the support block and the main support body.

3. The dedicated assembly device for fork groove sections according to claim 1 or 2, characterized in that: A wear-resistant arc-shaped block whose upper end surface is an arc-shaped groove II that matches the steel ball is fixed in the arc-shaped groove I of the steel ball guide block.

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