Movable pressing mechanism for chassis structural member sleeve welding

Abstract

The utility model belongs to the technical field of automobile chassis structural part welding clamps, and particularly discloses a movable pressing mechanism for chassis structural part sleeve welding, which comprises a pressing block, a limiting block and a spherical pressing head. A connecting rod part of the spherical pressing head penetrates through the limiting block, one side face of a spherical head part of the spherical pressing head abuts against the limiting block, and the other side face of the spherical head part of the spherical pressing head abuts against the pressing block; the limiting block and the pressing block are fixedly connected through a plurality of bolts arranged in the circumferential direction. And a pressing arm connecting block is mounted on the connecting rod part of the spherical pressing head. By means of the integral structural design, during welding, the air cylinder is started, the pressing block is driven to press the whole end face of the sleeve, the pressing block can be attached to the whole end face of the sleeve, stress is even, pressing clearance compensation is effectively achieved, the size stability of a sample piece is improved, the rework rate and the rejection rate are reduced, and production cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of welding fixtures for automotive chassis structural components, and in particular to a movable clamping mechanism for welding sleeves of chassis structural components. Background Technology

[0002] In the welding of chassis structural components sleeves, the locating pins wear down during use, causing deviations in their cylindricity. Combined with manufacturing errors in the inner diameter of the sleeve, this makes the sleeve difficult to install. Usually, a non-movable clamping mechanism is used to press the sleeve into the bottom. Due to uneven force on the left and right sides, there may be a situation where one end of the sleeve is clamped while the other end has a gap. This results in large fluctuations in the dimensions of the sleeve after welding, a decrease in the sample size qualification rate, and an increase in the scrap rate and rework rate. Utility Model Content

[0003] The purpose of this utility model is to solve the technical problems existing in the background art. To this end, an active clamping mechanism for welding the sleeve of chassis structural components is provided.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A movable clamping mechanism for welding sleeves of chassis structural components includes a clamping block, a limiting block, and a spherical pressure head;

[0006] The connecting rod of the spherical indenter passes through the limiting block and one side of the spherical head of the spherical indenter abuts against the limiting block, while the other side of the spherical head of the spherical indenter abuts against the pressing block.

[0007] The limiting block and the clamping block are fixedly connected by multiple bolts arranged circumferentially.

[0008] A pressure arm connecting block is installed on the connecting rod part of the spherical pressure head.

[0009] The following is a further technical solution of this utility model: the limiting block has a through hole through which the connecting rod of the spherical pressure head passes; the opening of the through hole near the ball head is set as a spherical recess, which is adapted to the side of the ball head.

[0010] The following is a further technical solution of this utility model: a spherical groove is provided on one side of the pressing block near the spherical pressing head, and the spherical groove is adapted to the side of the spherical head.

[0011] The following is a further defined technical solution of this utility model: the end of the pressure arm connecting block is sleeved with the connecting rod part through a sleeve through hole; the end of the connecting rod part away from the ball head is provided with an external thread; the end of the connecting rod part near the ball head is provided with an abutment part; the external thread of the end of the connecting rod part is threaded to a locking nut; a nut washer is placed between the locking nut and the pressure arm connecting block; and the two sides of the end of the pressure arm connecting block abut against the nut washer and the abutment part, respectively.

[0012] The following is a further defined technical solution of this utility model: the pressure arm connecting block is provided with a plurality of pressure arm connecting holes.

[0013] Compared with the prior art, the present invention has the following technical effects:

[0014] This utility model, through its overall structural design, activates a cylinder during welding, which drives a clamping block to press against the entire end face of the sleeve. This ensures that the clamping block fits snugly against the entire end face of the sleeve, resulting in uniform force distribution. This effectively compensates for the clamping gap, improves the dimensional stability of the sample, reduces rework and scrap rates, and saves production costs.

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the spherical indenter in this utility model;

[0020] Figure 4 This is a schematic diagram of the limiting block in this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the clamping block and the limiting block in this utility model;

[0022] Figure 6 This is a schematic diagram of the sleeve structure in this utility model.

[0023] Reference numerals in the attached diagram: 1. Spherical pressure head; 2. Locking nut; 3. Nut washer; 4. Pressure arm connecting block; 5. Limiting block; 6. Pressing block; 7. Sleeve; 8. Positioning pin. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0028] like Figure 1 As shown, this embodiment provides a movable clamping mechanism for welding sleeves of chassis structural components. It mainly consists of a spherical pressure head 1, a locking nut 2, a nut washer 3, a pressure arm connecting block 4, a limiting block 5, a clamping block 6, a pressure arm, and a cylinder. The clamping block 6 is moved by the extension and retraction of the cylinder piston rod, thereby clamping the sleeve 7 during welding.

[0029] like Figure 3 As shown, the spherical indenter 1 includes a ball head, an abutment portion, and a connecting rod portion arranged sequentially from one side to the other. Figure 4As shown, the limiting block 5 has a through hole with a spherical notch. For example... Figure 5 As shown, the clamping block 6 has a spherical groove.

[0030] like Figure 2 As shown, the connecting rod and the abutment portion pass through the through hole of the limiting block 5. The opening of this through hole near the ball head is set as a spherical recess, which matches the side of the ball head. Thus, the upper side of the ball head abuts against the spherical recess of the limiting block 5. The lower side of the ball head is placed in the spherical groove of the clamping block 6, and the limiting block 5 and the clamping block 6 are fixed by four circumferentially arranged bolts, so that the lower side of the ball head abuts against the spherical groove of the clamping block 6.

[0031] A pressure arm connecting block 4 is installed on the connecting rod of the spherical pressure head 1. Specifically, the end of the pressure arm connecting block 4 is sleeved with the connecting rod through a provided sleeve through hole. The end of the connecting rod away from the spherical head is provided with an external thread. The external thread of the end of the connecting rod is connected to a locking nut 2, and a nut washer 3 is placed between the locking nut 2 and the pressure arm connecting block 4. The two sides of the end of the pressure arm connecting block 4 abut against the nut washer 3 and the abutment part, respectively. Multiple pressure arm connecting holes are opened on the pressure arm connecting block 4 for connecting the pressure arm, which is connected to the piston rod of the cylinder.

[0032] like Figure 6 The sleeve 7 shown is welded. During welding, after placing the positioning pin 8 inside the sleeve 7, the cylinder is activated, which drives the clamping block 6 to press against the entire end face of the sleeve 7, so that the clamping block 6 can fit against the entire end face of the sleeve 7 and the force is evenly distributed. After welding, the cylinder retracts the piston rod, and the welded sample of the sleeve 7 is removed.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the disclosed methods and techniques, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Therefore, all equivalent changes made based on the shape, structure, and principle of this utility model without departing from its technical solution should be covered within the protection scope of this utility model.

Claims

1. A movable clamping mechanism for welding sleeves of chassis structural components, characterized in that, It includes a clamping block (6), a limiting block (5), and a spherical pressure head (1); The connecting rod of the spherical indenter (1) passes through the limiting block (5) and one side of the spherical head of the spherical indenter (1) abuts against the limiting block (5), and the other side of the spherical head of the spherical indenter (1) abuts against the pressing block (6). The limiting block (5) and the clamping block (6) are fixedly connected by multiple bolts arranged circumferentially; The spherical indenter (1) is equipped with an indenter arm connecting block (4) on its connecting rod.

2. The movable clamping mechanism for welding chassis structural component sleeves as described in claim 1, characterized in that, The limiting block (5) has a through hole through which the connecting rod of the spherical pressure head (1) passes. The opening of the through hole near the ball head is set as a spherical recess, which is adapted to the side of the ball head.

3. The movable clamping mechanism for welding chassis structural component sleeves as described in claim 1, characterized in that, The pressing block (6) has a spherical groove on one side near the spherical pressing head (1), and the spherical groove is adapted to the side of the spherical head.

4. The movable clamping mechanism for welding chassis structural component sleeves as described in claim 1, characterized in that, The end of the pressure arm connecting block (4) is sleeved with the connecting rod part through the provided sleeve through hole. The end of the connecting rod part away from the ball head is provided with an external thread, and the end of the connecting rod part near the ball head is provided with an abutment part. The external thread of the end of the connecting rod part is connected to the locking nut (2), and a nut washer (3) is placed between the locking nut (2) and the pressure arm connecting block (4). The two sides of the end of the pressure arm connecting block (4) abut against the nut washer (3) and the abutment part, respectively.

5. The movable clamping mechanism for welding chassis structural component sleeves as described in claim 1, characterized in that, The pressure arm connecting block (4) has multiple pressure arm connecting holes.

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