Flexible floating alignment bolt full-automatic tightening work station for assembling tightening tool

Abstract

The invention discloses a full-automatic tightening workstation for assembling a tightening tool and aligning a bolt in a flexible floating manner. Comprising a tightening workbench, a movable tray tool driving a connecting rod product to move, a tightening floating mechanism and a connecting rod abutting limiting mechanism. Two sets of tightening floating mechanisms and two sets of connecting rod abutting limiting mechanisms are arranged on the tightening workbench. The rotary floating structure comprises an X-direction floating guide rod, X-direction floating springs symmetrically distributed on the two sides and a special Z-direction floating spring. The elbow tightening gun is connected with the automatic tightening sleeve, is an electric tightening tool and is used for placing a connecting piece bolt (tightening assembly), an automobile chassis front axle part product, namely a connecting rod (assembly) and an automobile chassis front axle on the tool and entering an automatic connecting rod assembling and tightening station to automatically tighten the connecting rod, and assembling is completed; firstly, a floating mechanism tightening gun is moved to the approximate position of the bolt through an air cylinder sliding table, and then the bolt is aligned and centered through the floating mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of bolt tightening, and in particular to a fully automatic tightening workstation for assembling tightening tools with flexible floating alignment bolts. Background Art

[0002] Different pallets carrying front axle products on the Sagitar (automobile) front axle assembly line enter the connecting rod automatic tightening station to complete the automatic tightening bolt assembly of the left and right connecting rods and the front subframe. The traditional bolt tightening tool fixture is a rigid connection fixture without floating function, with poor continuity and fixed tool tightening point. However, in actual operation, there is a certain range of spatial position cumulative deviation between the fixture and the product when the front axle is placed on different pallets. The bolt position of the connecting rod tightening point will deviate from the center point of the tightening tool sleeve by + / -3mm, resulting in a one-time tightening failure of the bolt due to misalignment of the tightening tool sleeve. The production efficiency loss of failed rework is as high as 22%, and the one-time tightening success rate is only 78%. The Sagitar beat is 60JPH, with an average daily planned production of 1,000 units and an actual output of 720 units. The average daily tightening rework stoppage is 220 minutes, and the average daily loss of production is 220 sets. Summary of the invention

[0003] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a fully automatic tightening workstation for assembling and tightening tools with flexible floating alignment bolts; it can be used for connecting bolts (tightening and assembly), automobile chassis front axle component products - connecting rods (assembly), the automobile chassis front axle is placed on the tooling, and enters the connecting rod automatic assembly and tightening station for automatic tightening of the connecting rod to quickly complete the assembly; first, the floating mechanism tightening gun is moved to the approximate position of the bolt through the cylinder slide, and then the bolt is aligned and centered through the floating mechanism.

[0004] The present invention is implemented by constructing a fully automatic tightening workstation for assembling tightening tools with flexible floating alignment bolts, characterized in that it comprises a tightening workbench (100), a movable tray tool (200) for driving a connecting rod (101) product to move, a tightening floating mechanism (300), and a connecting rod abutting and limiting mechanism (400); two sets of tightening floating mechanisms (300) and connecting rod abutting and limiting mechanisms (400) are arranged on the tightening workbench (100); The tightening gun (500) is arranged on the tightening floating mechanism (300), and the tightening floating mechanism (300) is connected to the horizontal cylinder A (301) as a whole. The horizontal cylinder A (301) drives the tightening floating mechanism (300) as a whole to realize horizontal movement. The tightening floating mechanism (300) and the horizontal cylinder A (301) as a whole are further connected to the vertical cylinder A (302), and the vertical cylinder A (302) drives the tightening floating mechanism (300) and the horizontal cylinder A (301) as a whole to realize vertical movement. The connecting rod abutting and limiting mechanism (400) comprises a limiting end (401) and a limiting rod (402); the limiting end (401) is connected to the lower end of the limiting rod (402); a sliding seat A (403) is fixed to the upper end of the limiting rod (402); the sliding seat A (403) is connected to a horizontal cylinder B (404); the horizontal cylinder B (404) drives the limiting mechanism (400) to achieve horizontal movement; the limiting mechanism (400) and the horizontal cylinder B (404) are connected as a whole to a vertical cylinder B (405); the vertical cylinder B (405) drives the limiting mechanism (400) and the horizontal cylinder B (404) to achieve vertical movement.

[0005] According to the present invention, a fully automatic tightening workstation for assembling tightening tools with flexible floating alignment bolts is characterized in that: a connecting rod (101) to be tightened with bolts is placed on a movable pallet tooling (200), and corresponding to the front and rear ends of the tooling, two sets of tightening floating mechanisms (300) and a connecting rod tightening limiting mechanism (400) are respectively coordinated to tighten the bolts thereon; during operation, the movable pallet tooling (200) drives the connecting rod to move to a corresponding position on the tightening workbench (100), and the connecting rod tightening limiting mechanism (400) is first driven by a horizontal cylinder B (404) to descend to a corresponding height, and then the horizontal cylinder B ( The vertical cylinder A (302) drives the tightening floating mechanism (300) to move horizontally, so that the limiting end (401) is aligned with and the connecting rod of the assembled part is tightened and limited, and then the vertical cylinder A (302) drives the tightening floating mechanism (300) to descend to the corresponding height as a whole, and then the horizontal cylinder A (301) drives the tightening floating mechanism (300) to move horizontally, so that the tightening port of the tightening gun (500) is aligned with the assembly connecting part bolt (102), and the bolt is tightened; after tightening, the tightening floating mechanism (300) and the connecting rod tightening limiting mechanism (400) are controlled to retreat, and are driven away by the mobile pallet tooling (200).

[0006] According to the present invention, a fully automatic tightening workstation for assembling tightening tools with flexible floating alignment bolts is characterized in that: the tightening floating mechanism (300) is composed of a mounting base (1), a rotating floating structure, and a tightening gun clamping mechanism (2); the mounting base (1) is used to mount the tightening floating mechanism (300) as a whole on a sliding seat B (3) to achieve the connection and installation of this part of the main body, the sliding seat B (3) is mounted on a fixed mounting plate (7), and the entire tightening floating mechanism (300) is mounted on a tightening workbench (100) through the fixed mounting plate (7), and the vertical cylinder A (302) is fixedly mounted on the fixed mounting plate (7). The rotating floating structure comprises a column (6) and a lower end seat (12), the lower end of the column (6) is connected to the lower end seat (12), a tightening gun clamping mechanism (2) is fixed to the side of the lower end seat (12) and connected as a whole, the upper end of the column (6) is inserted into the mounting base (1), and a group of Z-direction floating special springs (4) are respectively arranged at the upper end and the lower part of the column (6). A first X-direction floating guide rod (9) and a second X-direction floating guide rod (10) are provided in the lower end seat (12); X-direction floating springs (11) are symmetrically distributed on both sides of the second X-direction floating guide rod (10).

[0007] According to the present invention, a fully automatic tightening workstation for assembling tightening tools with flexible floating alignment bolts is characterized in that the column (6) is a Z-direction floating guide rod, and the tightening gun clamping mechanism (2) is a tool clamping connecting block for clamping an electric tightening tool.

[0008] According to the present invention, a fully automatic tightening workstation for assembling tightening tools with flexible floating alignment bolts is characterized in that a special spring plunger (8) for horizontally rotating floating in XY directions is arranged on the top of the mounting base (1) to form a left and right swing limiting structure (5).

[0009] According to the present invention, a fully automatic tightening workstation for assembling tightening tools with flexible floating alignment bolts is characterized in that: the rotating floating structure includes an X-axis floating guide rod, X-axis floating springs symmetrically distributed on both sides, and a Z-axis floating special spring; the elbow tightening gun is connected to an automatic tightening sleeve, and the elbow tightening gun is an electric tightening tool used for connecting bolts (tightening and assembly), automobile chassis front axle component products-connecting rods (assembly), the automobile chassis front axle is placed on the tooling, and enters the connecting rod automatic assembly tightening station for automatic tightening of the connecting rod to complete the assembly.

[0010] The present invention has the following advantages: The present application provides a fully automatic bolt tightening workstation, which is used for the bolt tightening and assembly of the front axle component product of the automobile chassis - the connecting rod (assembly). The front axle of the automobile chassis is placed on the tooling, and after entering the automatic assembly and tightening station of the connecting rod, the connecting rod is automatically tightened quickly through cooperation, and the assembly is completed quickly. At the same time, the tightening floating mechanism in the present invention has 6 degrees of freedom floating in space, so as to realize the function of centering and aligning the bolts. Therefore, in the application, the one-time tightening success rate of the automatic tightening assembly of the connecting rod of this station is increased from the original 78% to more than 99%, and the production efficiency is greatly improved by 21%. The output reaches 1,000 units per day. The new solution of the flexible centering tooling of the bolt tightening tool can be horizontally applied to other automatic tightening solutions of the automobile chassis assembly station, which helps to improve the production efficiency of automation. In addition, the solution can be promoted and applied to the production automation assembly of the automobile\electronics\medical\home appliances and other industries, greatly improving the OEE of the automated assembly, making the production more flexible and efficient, and helping to build an efficient smart factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the full-view of the fully automatic tightening workstation for the front axle "connecting rod" of the automobile chassis parts assembly; Figure 2-Figure 4 It is a schematic diagram of the main part corresponding to the workstation of this application; Figure 5 It is a schematic diagram for explaining the function of an automatic tightening and centering device for assembling bolts; Figure 6 It is a schematic diagram illustrating the connection relationship of the mechanical structure corresponding to this application; Figure 7-Figure 11 It is a structural schematic diagram of the tightening floating mechanism corresponding to this application; Fig.12 yes Fig.11 Middle AA section view; Fig.13 yes Fig.11 Middle BB section view; Fig.14 yes Fig.11 Middle CC section view.

[0012] Among them: tightening workbench 100, driving connecting rod 101, assembling connecting bolt 102 (tightening assembly), automatic tightening sleeve 103 (chamfering with guiding function), mobile pallet tooling 200, tightening floating mechanism 300, horizontal cylinder A301, vertical cylinder A302, connecting rod tight limit mechanism 400, limit end 401, tight limit rod 402, sliding seat A403, horizontal cylinder B404, vertical cylinder B405, tightening gun 500, Install the base 1, tighten the gun clamping mechanism 2, the sliding seat B3, the Z-direction floating special spring 4, the left and right swing limit structure 5, the column 6, the fixed mounting plate 7, the spring plunger 8, the first X-direction floating guide rod 9, the second X-direction floating guide rod 10, the X-direction floating spring 11, and the lower end seat 12. DETAILED DESCRIPTION

[0013] The following will be combined with the attached Figure 1-Figure 14 The present invention is described in detail, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] The present invention provides a fully automatic tightening workstation for assembling a tightening tool with flexible floating alignment bolts, such as Figure 1-Figure 14As shown, it can be implemented in the following manner. This workstation includes a tightening workbench 100, a mobile pallet tooling 200 that drives the connecting rod 101 product to move, a tightening floating mechanism 300, and a connecting rod tightening and limiting mechanism 400; two sets of tightening floating mechanisms 300 and connecting rod tightening and limiting mechanisms 400 are arranged on the tightening workbench 100; a tightening gun 500 is arranged on the tightening floating mechanism 300, and is used to perform specific bolt tightening actions. The tightening floating mechanism 300 is connected to the horizontal cylinder A301 as a whole, and the tightening floating mechanism 300 is driven by the horizontal cylinder A301 to realize horizontal movement as a whole. The tightening floating mechanism 300 and the horizontal cylinder A301 are connected to the vertical cylinder A302 as a whole, and the vertical cylinder A302 drives the tightening floating mechanism 300 and the horizontal cylinder A301 as a whole to realize vertical movement.

[0015] The connecting rod pressing and limiting mechanism 400 has a limiting end 401 and a pressing and limiting rod 402. The limiting end 401 is connected to the lower end of the pressing and limiting rod 402. The upper end of the pressing and limiting rod 402 is fixed with a sliding seat A403. The sliding seat A403 is connected to the horizontal cylinder B404, and the horizontal cylinder B404 drives the pressing and limiting mechanism 400 to realize horizontal movement. The pressing and limiting mechanism 400 and the horizontal cylinder B404 are connected to the vertical cylinder B405 as a whole, and the vertical cylinder B405 drives the pressing and limiting mechanism 400 and the horizontal cylinder B404 as a whole to realize vertical movement.

[0016] In the present invention, the connecting rod 101 to be tightened with bolts is placed on the mobile pallet tooling 200, corresponding to the front and rear ends of the tooling, and two sets of tightening floating mechanisms 300 and the connecting rod tightening limit mechanism 400 cooperate to tighten the bolts. During operation, the mobile pallet tooling 200 drives the connecting rod to move to the corresponding position on the tightening workbench 100, and the horizontal cylinder B404 drives the connecting rod tightening limit mechanism 400 to descend to the corresponding height, and then the horizontal cylinder B404 drives the tightening limit mechanism 40 0 realizes horizontal movement, so that its limiting end 401 is aligned and the connecting rod of the assembled part is pressed against the limiting position, and then the vertical cylinder A302 drives the tightening floating mechanism 300 to descend to the corresponding height as a whole, and then the horizontal cylinder A301 drives the tightening floating mechanism 300 to realize horizontal movement, so that the tightening port of the tightening gun 500 is aligned with the assembly connecting part bolt 102, and the bolt is tightened; after tightening, the tightening floating mechanism 300 and the connecting rod are controlled to retreat against the limiting mechanism 400, and are driven away by the mobile pallet tooling 200.

[0017] In the present invention, the tightening floating mechanism 300 is composed of a mounting base 1, a rotating floating structure, and a tightening gun clamping mechanism 2; the mounting base 1 is used to mount the tightening floating mechanism 300 as a whole on the sliding seat B3 to achieve the connection and installation of this part of the main body, the sliding seat B3 is mounted on the fixed mounting plate 7, and the entire tightening floating mechanism 300 is mounted on the tightening workbench 100 through the fixed mounting plate 7, and the vertical cylinder A302 is fixedly mounted on the fixed mounting plate 7. The rotating floating structure includes a column 6 and a lower end seat 12. The lower end of the column 6 is connected to the lower end seat 12. The tightening gun clamping mechanism 2 is fixed to the side of the lower end seat 12 and connected as a whole. The upper end of the column 6 is inserted into the mounting base 1. A group of Z-direction floating special springs 4 are respectively arranged at the upper end and the lower part of the column 6. The lower end seat 12 is provided with a first X-direction floating guide rod 9 and a second X-direction floating guide rod 10 ; X-direction floating springs 11 are symmetrically distributed on both sides of the second X-direction floating guide rod 10 .

[0018] In the present invention, the column 6 is a Z-direction floating guide rod, and the tightening gun clamping mechanism is a tool clamping connecting block for clamping an electric tightening tool.

[0019] In the present invention, a spring plunger 8 for horizontally rotating floating in XY direction is arranged on the top of the mounting base 1 to form a left and right swing limiting structure 5; the left and right swing limiting structure 5 realizes distance control when swinging left and right, and adjusts the floating demand according to the swing distance required by the actual product application.

[0020] In the present invention, Figure 5 As shown; the rotating floating structure includes an X-direction floating guide rod, X-direction floating springs symmetrically distributed on both sides, and a Z-direction floating special spring; the elbow tightening gun is connected to an automatic tightening sleeve, and the elbow tightening gun is an electric tightening tool used for connecting bolts (tightening assembly), automobile chassis front axle component products-connecting rods (assembly), the automobile chassis front axle is placed on the tooling, and enters the connecting rod automatic assembly tightening station to automatically tighten the connecting rod to complete the assembly. In summary, the function of the tightening floating mechanism 300 in this application is to fix the tightening gun, and after the tightening gun completes the tightening of the bolt 102 once, the multi-directional floating performance can drive the tightening gun to return to its original position well, so as to adapt to the position deviation caused by different pallet tooling, and facilitate the tightening tool sleeve to align the bolt.

[0021] like Figure 1 As shown, it is a schematic diagram of the fully automatic tightening workstation for the front axle "connecting rod" of the automobile chassis parts assembly, and the assembly is realized through product entry and product exit; Figure 2-Figure 3 What is reflected in it is the specific position of the flexible floating alignment bolt device of the assembly tightening tool in this application.

[0022] Figure 5This is a functional description of the automatic tightening and centering device for assembly bolts involved in this application, which has 6 degrees of freedom in space to float and realize the centering and alignment of bolts.

[0023] Figure 6 This is the mechanical structure connection relationship description corresponding to this application, and the tightening tool is flexible and centered and floating. The bolt deviates from the reference center range of + / -5mm; the corresponding products of the automatic tightening sleeve (chamfered with guiding function): connecting bolts (tightening and assembly); automobile chassis front axle component products - connecting rods (assembly); the automobile chassis front axle is placed on the tooling and enters the connecting rod automatic assembly and tightening station for automatic tightening of the connecting rod to complete the assembly.

[0024] When this application is implemented, the floating mechanism is first installed to the corresponding position, the tightening gun is installed on the floating mechanism, the floating mechanism and the tightening gun are moved to the approximate position of the bolt through the cylinder slide, and then the bolt is aligned and centered through the floating mechanism (the bolt needs to be in the center of the tightening gun head before it can be tightened, eccentricity will result in unqualified tightening) and tightened.

[0025] First, the floating mechanism tightening gun is moved to the approximate position of the bolt through the cylinder slide, and then the bolt is aligned and centered through the floating mechanism. The existing technology cannot guarantee alignment and centering. This patent can be used to cooperate with some key components of the automated tightening equipment. The current automated machine can be applied to the operation of the front suspension subframe / and other products. The operation method is to cooperate with the corresponding slide cylinder and other components to act through the PLC signal (the purpose is to achieve automatic adjustment of the swing error in the free state).

[0026] After the floating structure is modified, the present invention can easily align the center, with high tightening efficiency and a passability of 99.8%. When the present invention is implemented, this patent is realized through multiple theoretical simulations and actual application processes, and has now been used for product realization and application. The centering is realized by first moving the floating mechanism and the tightening gun to the approximate position of the bolt through the cylinder slide, and then aligning and centering the bolt through the patented floating mechanism; the bolt and the tightening gun head are tightened at the same center to achieve qualified tightening.

[0027] This patent is applicable to the tightening of bolts of automotive parts, which are installed on a fixed mounting plate. The mounting plate can be moved by a cylinder and a solenoid valve to make the patent work. The clamping tightening shaft realizes mechanical floating through the patent. The docking between the tightening shaft and the bolt is no longer a fixed one-to-one position. Instead, the one-to-one position degree is expanded through the patent, which makes the qualified rate higher and the data more accurate during docking. The mounting base 1 in the patent is the position for connecting the mounting plate to achieve connection with the corresponding mounting plate. The rotating floating structure realizes floating in the front and rear directions through the left and right stroke of the internal spring and the pin limit. The clamping part of the tightening shaft clamps the standard tool. The upper and lower spring adjustment structure adjusts the floating of the upper and lower positions through the spring and the bolt nut, and cooperates with the floating connection of the rotating direction of the rotating shaft connecting the rotating shaft and the floating shaft in the upper and lower directions.

[0028] When this application is implemented, the floating mechanism is installed at a fixed fulcrum connection point. Conventional mechanical structures can only move up and down, left and right, and perform linear motion. When some products are manufactured (tightening process), they need to be tightened when they reach this station, but the position is not relatively accurate, which will lead to unqualified tightening. My floating mechanism is used to solve the problem that the product is repeatedly manufactured (tightening) at a certain station, and the position deviation occurs. It can also make up for the error and tighten the work. The floating direction of this device has 6 degrees of freedom, and the rotating floating structure controls the floating in the left and right directions.

[0029] For a flexible floating alignment bolt device for an assembly tightening tool provided in this application, the flexible floating centering tool is innovatively designed by the fixture and uses a guide rod to guide it. The matching spring can achieve floating within a certain range and return to the center position. The floating range is determined by the fixture structure limit block and the spring travel. The tool design can achieve free floating in the X direction, Y direction, and Z direction, and has a flexible floating function with 6 degrees of freedom in space. After the flexible floating fixture is installed with the tightening tool, the tightening tool sleeve tightening bolt point floating range of + / -5mm can be achieved, which can fully cover and adapt to the deviation of the tightening center point of the connecting rod from + / -3mm when the product posture is loaded on different pallets. Therefore, in the application, the one-time tightening success rate of the automatic tightening assembly of the connecting rod at this station is increased from the original 78% to more than 99%, and the production efficiency is greatly improved by 21%. The output reaches 1,000 units per day. The new solution of the flexible centering tool for bolt tightening tools can be horizontally applied to other automatic tightening solutions for automobile chassis assembly stations, helping automation to improve production efficiency. In addition, this solution can be promoted and applied to production automation assembly in industries such as automobiles, electronics, medical treatment, and home appliances, greatly improving the OEE of automated assembly, making production more flexible and efficient, and helping to build efficient smart factories.

[0030] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fully automatic tightening workstation for assembling and tightening tools with flexible floating alignment bolts, characterized in that ； It comprises a tightening workbench (100), a movable tray tool (200) for driving a connecting rod (101) product to move, a tightening floating mechanism (300), and a connecting rod tightening limiting mechanism (400); two sets of tightening floating mechanisms (300) and connecting rod tightening limiting mechanisms (400) are arranged on the tightening workbench (100); The tightening gun (500) is arranged on the tightening floating mechanism (300), and the tightening floating mechanism (300) is connected to the horizontal cylinder A (301) as a whole. The horizontal cylinder A (301) drives the tightening floating mechanism (300) as a whole to realize horizontal movement. The tightening floating mechanism (300) and the horizontal cylinder A (301) as a whole are further connected to the vertical cylinder A (302), and the vertical cylinder A (302) drives the tightening floating mechanism (300) and the horizontal cylinder A (301) as a whole to realize vertical movement. The connecting rod abutting and limiting mechanism (400) comprises a limiting end (401) and a limiting rod (402); the limiting end (401) is connected to the lower end of the limiting rod (402); a sliding seat A (403) is fixed to the upper end of the limiting rod (402); the sliding seat A (403) is connected to a horizontal cylinder B (404); the horizontal cylinder B (404) drives the limiting mechanism (400) to achieve horizontal movement; the limiting mechanism (400) and the horizontal cylinder B (404) are connected as a whole to a vertical cylinder B (405); the vertical cylinder B (405) drives the limiting mechanism (400) and the horizontal cylinder B (404) to achieve vertical movement.

2. According to claim 1, a fully automatic tightening workstation for assembling and tightening tools with flexible floating alignment bolts, characterized in that; The connecting rod (101) to be tightened with bolts is placed on the movable pallet tooling (200), and the two sets of tightening floating mechanisms (300) and the connecting rod tightening limiting mechanism (400) are respectively coordinated to tighten the bolts. During operation, the movable pallet tooling (200) drives the connecting rod to move to the corresponding position on the tightening workbench (100), and the horizontal cylinder B (404) drives the connecting rod tightening limiting mechanism (400) to descend to the corresponding height, and then the horizontal cylinder B (404) drives the tightening limiting mechanism (400) to tighten the bolts. The tightening floating mechanism (300) is moved horizontally so that its limit end (401) is aligned and the connecting rod of the assembled part is pressed against the limit position, and then the vertical cylinder A (302) drives the tightening floating mechanism (300) to descend to the corresponding height as a whole, and then the horizontal cylinder A (301) drives the tightening floating mechanism (300) to move horizontally so that the tightening port of the tightening gun (500) is aligned with the assembly connecting part bolt (102), and the bolt is tightened; after tightening, the tightening floating mechanism (300) and the connecting rod are controlled to retreat against the limit mechanism (400), and are driven away by the mobile pallet tooling (200).

3. According to claim 1, a fully automatic tightening workstation for assembling and tightening tools with flexible floating alignment bolts, characterized in that; The tightening floating mechanism (300) comprises a mounting base (1), a rotating floating structure, and a tightening gun clamping mechanism (2); the mounting base (1) is used to mount the tightening floating mechanism (300) as a whole on a sliding seat B (3) to achieve the connection and installation of this part of the main body; the sliding seat B (3) is mounted on a fixed mounting plate (7); the entire tightening floating mechanism (300) is mounted on a tightening workbench (100) via the fixed mounting plate (7); a vertical cylinder A (302) is fixedly mounted on the fixed mounting plate (7); The rotating floating structure comprises a column (6) and a lower end seat (12), the lower end of the column (6) is connected to the lower end seat (12), a tightening gun clamping mechanism (2) is fixed to the side of the lower end seat (12) and connected as a whole, the upper end of the column (6) is inserted into the mounting base (1), and a group of Z-direction floating special springs (4) are respectively arranged at the upper end and the lower part of the column (6). A first X-direction floating guide rod (9) and a second X-direction floating guide rod (10) are provided in the lower end seat (12); X-direction floating springs (11) are symmetrically distributed on both sides of the second X-direction floating guide rod (10).

4. According to claim 1, a fully automatic tightening workstation for assembling and tightening tools with flexible floating alignment bolts, characterized in that; The column (6) is a Z-direction floating guide rod, and the tightening gun clamping mechanism (2) is a tool clamping connecting block used for clamping an electric tightening tool.

5. According to claim 1, a fully automatic tightening workstation for assembling and tightening tools with flexible floating alignment bolts, characterized in that; A special spring plunger (8) for horizontally rotating and floating in the XY direction is arranged on the top of the mounting base (1), forming a left-right swing limiting structure (5).

6. According to claim 1, a fully automatic tightening workstation for assembling and tightening tools with flexible floating alignment bolts, characterized in that; The rotating floating structure includes an X-axis floating guide rod, X-axis floating springs symmetrically distributed on both sides, and a Z-axis floating special spring; the elbow tightening gun is connected to an automatic tightening sleeve. The elbow tightening gun is an electric tightening tool used for connecting bolts (tightening and assembly), automobile chassis front axle component products - connecting rods (assembly), the automobile chassis front axle is placed on the tooling, and enters the connecting rod automatic assembly and tightening station for automatic tightening of the connecting rod to complete the assembly.

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