Special device for assembling and riveting ball hinge and lock sleeve and its using method

Abstract

The application relates to a special device suitable for ball hinge, lock sleeve assembly and riveting and a using method thereof, and has the following characteristics: a lower end of a stand is vertically fixed to an upper end of an assembly table; a containing cavity is arranged on the left side of the upper end of the assembly table; a long slot hole is arranged on the top of the containing cavity and is communicated with the left side of the assembly table, the neck of the ball hinge is positioned, and the ball hinge to be assembled is vertically arranged on the assembly table; a right end of a guide frame is vertically fixed to the stand, a vertical guide hole is arranged on the left end of the guide frame; a right end of a force applying rod is hingedly connected to the upper end of the stand; a pressing rod is arranged in the vertical guide hole, a lower end of the pressing rod is provided with a pressing head; a lower end of a lock sleeve fastening column is provided with a hexagonal positioning slot matched with the upper end of the lock sleeve; in the assembly stage, the pressing head is pressed on the lock sleeve arranged above the ball hinge through the lock sleeve fastening column; and in the riveting stage after the assembly, the pressing head of the pressing rod is in contact with the lower end of the central hole of the ball hinge. The application guarantees the assembly quality and improves the assembly efficiency.

Description

Technical Field

[0001] This invention belongs to the field of mechanical manufacturing assembly technology, and in particular, it is a special device and method for the assembly and riveting of ball hinge lock sets. Background Technology

[0002] The buffer base is an important component that can buffer and reduce vibration when the inertial platform is subjected to impact and vibration, thereby ensuring the stable operation of the system. Therefore, it is particularly important to assemble a buffer base with excellent performance and meet the requirements. The key to the assembly of the buffer base lies in the assembly of the shock absorber.

[0003] The first step in assembling the damper is to scrape and grind the ball joint (grinding the ball seat, ball cap, and ball journal until the spherical surfaces of the ball seat, ball cap, and ball journal have a uniform contact area and a contact rate of no less than 85%, and then perform a full rotation to ensure that there is no jamming or gap movement between the ball seat, ball cap, and ball journal). Then, the ball joint is assembled according to the drawings. After assembly, left-hand and right-hand springs need to be installed between the damping cylinder and the ball joint. Due to the spring force, the springs need to be pressed down to screw the locking sleeve into place. After the locking sleeve is screwed into place, the upper end of the ball joint needs to be riveted firmly to the guide sleeve to prevent the guide sleeve from being dislodged due to the spring force during operation, which would affect the buffering performance.

[0004] The current assembly method requires two people working together with a press to complete this assembly sequence. During the assembly process, one person is responsible for compressing the spring and controlling the downward pressure (the pressure must be moderate, neither too high nor too low), while the other person is responsible for fixing the damping cylinder assembly placed on the V-block and using a wrench to screw the locking sleeve into the upper thread of the ball joint. After the locking sleeve is assembled, the damping cylinder assembly needs to be placed on the V-block and riveted securely to the upper end of the ball joint and the guide sleeve. 1. Poor fit between the two parts during the assembly of the locking sleeve can easily cause the spring to pop out, which can easily injure the operator. In addition, the popped-out parts will also be damaged, rendering them unusable. This will not only increase production costs but also affect the assembly production schedule. 2. The instantaneous downward force when riveting the upper end of the ball joint and the locking sleeve is large and acts directly on the ball joint (the contact rate between the ball journal, ball seat, and ball cap is more than 85% of the scraped surface), which can easily damage the finely scraped surface. To address this technical challenge, a specialized device and method are designed for the assembly and riveting of ball hinge lock sets, thereby improving assembly quality and efficiency. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a special device and its method of use that is suitable for ball joint chain lock assembly and riveting, which saves manpower, enables safe assembly, improves assembly efficiency, and avoids damage to ball joints.

[0006] One of the above-mentioned objectives of the present invention is achieved by the following technical solution:

[0007] A special device for assembling and riveting ball hinges and locks, the invention of which includes an assembly table, a column, a guide frame, a pressure rod, a force-applying rod, and a lock fastening post;

[0008] The lower end of the column is vertically fixed to the middle of the upper part of the assembly platform. A receiving cavity is provided on the left side of the assembly platform near the upper end, into which the ball seat and ball cap portion of the ball hinge extend. A long slot communicating with the left side of the assembly platform is provided at the top of the receiving cavity. The width of the long slot matches the neck size of the ball bearing journal, used to position the neck of the ball hinge, allowing the ball hinge to be assembled to be vertically inserted onto the assembly platform. The guide frame is a horizontal support, and its right end is vertically fixed to the column. Next, a vertical guide hole is provided at the left end of the guide frame; the force-applying rod is integrally set above the guide frame, and the right end of the force-applying rod is hinged to the upper end of the column; the left end of the force-applying rod is the force-applying end; the pressure rod is a vertical rod, and the pressure rod is fitted through the vertical guide hole on the guide frame with a clearance fit, the upper end of the pressure rod is hinged to the middle of the force-applying rod, and the lower end of the pressure rod is provided with a pressure head; the lower end of the locking sleeve fastening column is provided with a hexagonal positioning groove that matches the shape of the upper end of the locking sleeve;

[0009] During the assembly stage of the ball joint and the locking sleeve, the pressure head of the pressure rod is pressed against the locking sleeve placed above the ball joint by the locking sleeve fastening post; during the riveting stage after the ball joint and the locking sleeve are assembled, the pressure head of the pressure rod forms a downward pressing contact with the center hole at the upper end of the ball joint.

[0010] Furthermore, a column mounting hole is provided at the right end of the guide frame, and the transverse support is connected to the column through the column mounting hole; a connecting seam is provided between the column mounting hole and the right side of the guide frame, a threaded hole is provided on one side of the corresponding position of the connecting seam, and a screw mounting hole is provided on the other side. By installing a locking nut in the screw mounting hole and the threaded hole, the guide frame is clamped and fixed to the column in the horizontal direction.

[0011] Furthermore, the pressure head at the lower end of the pressure rod is a spherical pressure head, and a positioning concave surface is provided at the center of the upper end of the locking and fixing column. The shape of the positioning concave surface matches the shape of the pressure head at the lower end of the pressure rod.

[0012] Furthermore, the locking sleeve fastening post is provided with a vertical center hole and a transverse hole that is perpendicularly connected to the vertical center hole.

[0013] The second objective of this invention is achieved through the following method:

[0014] A method of using the aforementioned specialized device for ball hinges, lock assembly, and riveting, characterized by comprising a first usage stage and a second usage stage:

[0015] The first stage involves screwing the locking sleeve onto the upper end of the ball joint, including:

[0016] 1. Insert the ball hinge into the long slot from the left side of the assembly table with the neck of the ball journal aligned with the long slot on the assembly table, so that the ball seat, ball cap, and ball head of the ball journal extend into the receiving cavity on the assembly table, while the ball rod part of the upper part of the ball journal is located above the assembly table and aligned with the pressure rod.

[0017] 2. Starting from the top of the ball joint, insert the damping cylinder, left and right rotating springs, and locking sleeve into the ball joint in sequence. Place the locking sleeve fastening post on the top of the locking sleeve and press the bottom of the pressure rod against the positioning concave surface on the top of the fastening post.

[0018] 3. Adjust the position of the fastening post, locking sleeve, and ball joint to achieve vertical alignment; then press down on the force-applying end of the force-applying rod, causing the pressure rod to press down and tighten the locking sleeve fastening tool and locking sleeve. As a result, the spring is compressed, pressing the locking sleeve until it can be screwed into the top thread of the ball joint. While ensuring that the hand acting on the force-applying end of the force-applying rod does not release, use the other hand to rotate the locking sleeve fastening post. The locking sleeve fastening post causes the locking sleeve to screw into the top thread of the ball joint. The two hands work together to complete the assembly of the locking sleeve.

[0019] The second stage involves riveting the upper end of the ball joint to the locking sleeve.

[0020] After the lock assembly is completed, remove the lock fastening post and use the pressing handle to drive the pressure rod to repeatedly rivet the upper end of the ball hinge to the lock, thereby making the ball hinge and the lock firmly riveted, completing the assembly and riveting of the ball hinge and lock assembly.

[0021] The advantages and positive effects of this invention are as follows:

[0022] 1. The special device and method for assembling and riveting ball hinge locks of the present invention enables one person to operate safely independently. On the one hand, it saves manpower and reduces production costs. On the other hand, it avoids the problem of spring popping out due to poor coordination between two people, thus achieving safe assembly and improving assembly efficiency.

[0023] 2. The special device for assembling and riveting the hinge lock set of the present invention is used for assembly and riveting. During riveting, the downward force is transmitted to the upper end of the assembly table, which avoids the problem of damage to the fine scraping surface of the ball hinge due to excessive instantaneous force and improves product quality. Attached Figure Description

[0024] Figure 1 This is an assembly diagram of the ball joint and locking sleeve involved in this invention.

[0025] Figure 2 This is a schematic diagram of the ball hinge involved in the present invention.

[0026] Figure 3This is a schematic diagram of the structure of the special device of the present invention (excluding the locking sleeve fixing post).

[0027] Figure 4 yes Figure 3 Top view of the assembly platform;

[0028] Figure 5 This is a cross-sectional view of the locking sleeve fastening post of the present invention;

[0029] Figure 6 This is a bottom view of the locking sleeve fastening post of the present invention;

[0030] Figure 7 This is a reference diagram showing the usage state of the ball hinge and lock assembly according to the present invention. Detailed Implementation

[0031] The structure of the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that these embodiments are descriptive and not limiting.

[0032] A specialized device for ball joints, lock assembly, and riveting; please refer to [link / reference]. Figures 1-7 It includes an assembly table 13, a column 12, a guide frame 11, a pressure rod 15, a force-applying rod 7, and a locking sleeve fastening column 17.

[0033] A threaded hole 13.3 is provided at the upper center of the assembly platform for fixed connection with the lower end of the column. A receiving cavity 13.1 is provided on the left side of the assembly platform near the upper end for the ball seat and ball cap of the ball hinge to extend into. A long slot 13.2 communicating with the left side of the assembly platform is provided at the top of the receiving cavity, and the width of the long slot matches the neck size of the ball journal.

[0034] The lower end of the column is provided with an external thread, which is connected to the threaded hole on the assembly table through the external thread. A locking nut 14 is connected to the lower end of the column above the assembly table to vertically fix the column to the assembly table.

[0035] The guide frame is a horizontal support. A column mounting hole is provided at the right end of the guide frame, through which the horizontal support is connected to the column. A connecting seam is provided between the column mounting hole and the right side of the guide frame. A threaded hole is provided on one side of the connecting seam, and a screw mounting hole is provided on the other side for installing locking screws 10. This allows the guide frame to be clamped and fixed horizontally to the column and suspended above the assembly table. A vertical guide hole is provided at the left end of the guide frame for guiding the pressure rod.

[0036] The force-applying rod is mounted on top of the guide frame. The right end of the force-applying rod is hinged to the upper end of the column via a first pin 9. The left end of the force-applying rod is fitted with a fixed handle 16 for easy application of force.

[0037] The pressure rod is a vertical rod, and it is fitted into the vertical guide hole on the guide frame with a clearance fit. The upper end of the pressure rod is hinged to the middle part of the force-applying rod through the second pin 8. The lower end of the pressure rod is provided with a pressure head, which is a spherical pressure head.

[0038] The locking sleeve fastening post is provided with a vertical center hole 17.2 and a transverse hole 17.3 perpendicularly communicating with the vertical center hole. A positioning concave surface 17.1 is provided at the center of the upper end of the locking and fixing post, the shape of which matches the shape of the pressure head at the lower end of the pressure rod. A hexagonal positioning groove 17.4 matching the shape of the upper end of the locking sleeve is provided at the lower end of the locking sleeve fastening post. The hexagonal positioning groove forms a circumferential limiting fit with the locking sleeve, thereby connecting the locking sleeve to the ball hinge by rotating the locking sleeve fastening post. The vertical center hole on the locking sleeve fastening post serves to limit or position the ball hinge, while the transverse hole serves to install the force-adjusting rod.

[0039] The assembly of ball joints and locking sleeves using this device involves two stages:

[0040] The first stage is: screwing the locking sleeve onto the upper end of the ball joint.

[0041] 1. Insert the ball hinge into the long slot from the left side of the assembly table with the neck 3.1 of the ball journal aligned with the long slot on the assembly table, so that the ball seat 6, ball cap 5 and ball head of the ball journal 3 extend into the receiving cavity on the assembly table, while the ball rod part of the upper part of the ball journal is located above the assembly table and aligned with the pressure rod.

[0042] 2. Starting from the top of the ball joint, install the damping cylinder 4, the left and right rotating spring 2, and the locking sleeve 1 into the ball joint in sequence. Place the locking sleeve fastening post on the top of the locking sleeve and press the bottom of the pressure rod against the positioning concave surface on the top of the fastening post.

[0043] 3. Adjust the positions of the fastening post, locking sleeve, and ball joint to ensure vertical alignment. Then, press the handle downwards. The handle will drive the pressure rod downwards to tighten the locking sleeve fastening tool and the locking sleeve. The spring will be compressed, pressing the locking sleeve until it can be screwed into the threaded end of the ball joint. While keeping your hand on the handle in place, use your other hand to rotate the locking sleeve fastening post. The fastening post will then screw the locking sleeve into the threaded end of the ball joint. Both hands working together complete the assembly of the locking sleeve. To facilitate tightening the locking sleeve fastening post, a lever can be inserted into the transverse hole of the fastening post for easier rotation.

[0044] The second stage involves riveting the upper end of the ball joint to the locking sleeve.

[0045] After the lock assembly is completed, remove the lock fastening post and use the pressing handle to drive the pressure rod to repeatedly rivet the upper end of the ball hinge to the lock, thereby making the ball hinge and the lock firmly riveted, completing the assembly and riveting of the ball hinge and lock assembly.

[0046] Remove the damping cylinder assembly (here referring to the assembly structure of the ball hinge lock set) from the assembly table for subsequent assembly.

[0047] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A method for using a special device suitable for ball hinges, lock assembly and riveting, the special device including an assembly table, a column, a guide frame, a pressure rod, a force-applying rod, and a lock fastening post; The lower end of the column is vertically fixedly connected to the middle of the upper end of the assembly platform. A receiving cavity is provided on the left side of the assembly platform near the upper end, into which the ball seat and ball cap portion of the ball hinge extend. A long slot communicating with the left side of the assembly platform is provided at the top of the receiving cavity. The width of the long slot matches the neck size of the ball bearing journal, used to position the neck of the ball hinge, allowing the ball hinge to be assembled to be vertically inserted onto the assembly platform. The guide frame is a horizontal support, and its right end is vertically fixedly connected to the column. A vertical guide hole is provided at the left end of the guide frame; the force-applying rod is integrally set above the guide frame, and the right end of the force-applying rod is hinged to the upper end of the column; the left end of the force-applying rod is the force-applying end; the pressure rod is a vertical rod, and the pressure rod is fitted through the vertical guide hole on the guide frame with a clearance fit, the upper end of the pressure rod is hinged to the middle of the force-applying rod, and the lower end of the pressure rod is provided with a pressure head; the lower end of the locking sleeve fastening column is provided with a hexagonal positioning groove that matches the shape of the upper end of the locking sleeve; characterized in that: The usage method includes a first usage phase and a second usage phase: The first stage involves screwing the locking sleeve onto the upper end of the ball joint, including:

1. Insert the ball hinge into the long slot from the left side of the assembly table with the neck of the ball journal aligned with the long slot on the assembly table, so that the ball seat, ball cap, and ball head of the ball journal extend into the receiving cavity on the assembly table, while the ball rod part of the upper part of the ball journal is located above the assembly table and aligned with the pressure rod.

2. Starting from the top of the ball joint, insert the damping cylinder, left and right rotating springs, and locking sleeve into the ball joint in sequence. Place the locking sleeve fastening post on the top of the locking sleeve and press the bottom of the pressure rod against the positioning concave surface on the top of the fastening post.

3. Adjust the position of the fastening post, locking sleeve, and ball joint to achieve vertical alignment; then press down on the force-applying end of the force-applying rod, causing the pressure rod to press down and tighten the locking sleeve fastening tool and locking sleeve. As a result, the spring is compressed, pressing the locking sleeve until it can be screwed into the top thread of the ball joint. While ensuring that the hand acting on the force-applying end of the force-applying rod does not release, use the other hand to rotate the locking sleeve fastening post. The locking sleeve fastening post causes the locking sleeve to screw into the top thread of the ball joint. The two hands work together to complete the assembly of the locking sleeve. The second stage involves riveting the upper end of the ball joint to the locking sleeve. After the lock assembly is completed, remove the lock fastening post and use the pressing handle to drive the pressure rod to repeatedly rivet the upper end of the ball hinge to the lock, thereby making the ball hinge and the lock firmly riveted, completing the assembly and riveting of the ball hinge and lock assembly.

2. The method of using the special device for ball hinges, lock assembly, and riveting according to claim 1, characterized in that: A column mounting hole is provided at the right end of the guide frame, and the horizontal support is connected to the column through the column mounting hole; a connecting seam is provided between the column mounting hole and the right side of the guide frame, a threaded hole is provided on one side of the corresponding position of the connecting seam, and a screw mounting hole is provided on the other side. By installing a locking nut in the screw mounting hole and the threaded hole, the guide frame is clamped and fixed to the column in the horizontal direction.

3. The method of using the special device for ball hinges, lock assembly, and riveting according to claim 1, characterized in that: The pressure head at the lower end of the pressure rod is a spherical pressure head, and a positioning concave surface is provided at the center of the upper end of the locking and fixing column. The shape of the positioning concave surface matches the shape of the pressure head at the lower end of the pressure rod.

4. The method of using the special device for ball hinges, lock assembly, and riveting according to claim 1, characterized in that: The locking sleeve fastening post is provided with a vertical center hole and a horizontal hole that is perpendicularly connected to the vertical center hole.

5. The method of using the special device for ball hinges, lock assembly, and riveting according to claim 1, characterized in that: A fixed handle is fitted onto the force-applying end of the force-applying rod.

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