A lever assisted support structure

Abstract

The utility model discloses a lever formula auxiliary support structure belongs to frock clamp technical field. Include: lever base, it is used to install on clamp base plate, lever block, it is hinged with lever base and is used for supporting work piece, spring plunger, it sets up in the bottom of lever block and is used for providing work piece initial support force, support jar, it sets up in the bottom of lever block and is used for providing work piece rigid support force. Because lever block installs through the hinged mode, and its support point can be flexibly adjusted according to work piece shape and processing path, effectively avoids the cutter feed area, avoids processing interference, provides the initial elastic support through spring plunger, the impact when work piece is placed, realizes the primary positioning, and then support jar provides rigid support, ensures that work piece keeps stable in the processing, effectively adapts to the work piece of different shape and weight, promotes the versatility and reliability of clamp.

Description

Technical Field

[0001] This utility model belongs to the field of tooling and fixture technology, specifically relating to a lever-type auxiliary support structure. Background Technology

[0002] In the automotive manufacturing industry, the intermediate crossbeam is a key load-bearing component in the vehicle body structure. Its machining accuracy directly affects the assembly quality and safety performance of the entire vehicle. When machining the intermediate crossbeam, it is usually necessary to install it on a special fixture and use the fixture to position and clamp the workpiece. Due to the requirements of the machining process, the cutting tool often needs to feed upward from the bottom of the fixture. This machining method places higher design requirements on the support structure at the bottom of the fixture.

[0003] Traditional fixture support structures typically employ rigid supports. While ensuring workpiece positioning stability, they struggle to accommodate the need for obstacle avoidance during machining. This is especially true when the tool is fed from the bottom up. If the support structure is poorly laid out, it can easily interfere with the tool path, hindering smooth machining and potentially leading to workpiece scrap or equipment damage. Summary of the Invention

[0004] This utility model addresses the aforementioned problems in the existing technology by proposing an auxiliary support structure that effectively avoids tool interference while ensuring stable support of the workpiece and possesses stable support force.

[0005] This utility model can be achieved through the following technical solutions: A lever-type auxiliary support structure, comprising: A lever base for mounting on a clamp base plate; A lever block, which is hinged to the lever base and used to support the workpiece; A spring plunger is located at the bottom of the lever block and is used to provide initial support force for the workpiece; A support cylinder is located at the bottom of the lever block and is used to provide rigid support force for the workpiece.

[0006] As a further improvement of this utility model, the clamp base plate is provided with a clearance groove along its central axis in the length direction, and the lever block is respectively provided on both sides of the top surface of the clearance groove.

[0007] As a further improvement of this utility model, the workpiece is located at the top of the clearance groove, and the two lever blocks located on both sides of the clearance groove are respectively supported on the bottom sides of the workpiece.

[0008] As a further improvement of this utility model, the two ends of the lever block are a connecting end and a supporting end, respectively. The connecting end is hinged to the lever base, and the supporting end is used to support the workpiece.

[0009] As a further improvement of this utility model, the spring plunger is vertically arranged and located near or at the bottom of the support end of the lever block.

[0010] As a further improvement of this utility model, the support cylinder is vertically arranged and located at the bottom of the middle section of the lever block.

[0011] As a further improvement of this utility model, when the workpiece is placed on the lever block, the workpiece presses the lever block down until it abuts against the spring plunger, so that the spring plunger provides initial support force for the workpiece.

[0012] As a further improvement of this utility model, after the spring plunger abuts against the lever block, the cylinder axis of the support cylinder is pushed upward until it abuts against the lever block.

[0013] As a further improvement of this utility model, the cylinder shaft of the support cylinder applies a rigid support force to the lever block, which is transmitted to the support end to lock the workpiece position.

[0014] As a further improvement of this utility model, the point where the lever block abuts against the spring plunger is an elastic support point, and the point where the lever block abuts against the support cylinder is a rigid support point. The horizontal distance from the connecting end of the lever block to the rigid support point is greater than the horizontal distance from the rigid support point to the elastic support point.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Flexible structural layout to avoid tool interference: Since the lever block is installed by hinge, its support point can be flexibly adjusted according to the shape of the workpiece and the machining path, effectively avoiding the tool entry area and avoiding machining interference; 2. Phased support enhances stability and adaptability: Initial elastic support is provided by spring plungers to buffer the impact when placing the workpiece and achieve initial positioning; subsequently, the support cylinder provides rigid support to ensure the workpiece remains stable during processing, effectively adapting to workpieces of different shapes and weights, and improving the versatility and reliability of the fixture. 3. Based on the lever principle, the force is more reasonable and the clamping is more stable: the spring plunger and the support cylinder are reasonably positioned on the lever block. By utilizing the lever amplification effect, the rigid support force is effectively transmitted to the support end, which enhances the clamping rigidity and significantly improves the workpiece's resistance to deformation and positioning accuracy during processing. 4. Dual-point synchronous support to improve clamping balance: The bottom sides of the workpiece are supported by two lever blocks simultaneously, which evenly distributes the force and effectively prevents tilting or displacement caused by uneven force, further ensuring processing quality. 5. High degree of automation, convenient and efficient operation: The linkage mechanism between the spring plunger and the support cylinder can realize automatic triggering of the support process without manual intervention, improve the automation level of the fixture, and is suitable for high-efficiency and high-precision automated processing scenarios. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the lever-type auxiliary support structure of this utility model.

[0017] In the diagram, 100 is the lever base; 110 is the lever block; 111 is the connecting end; 112 is the supporting end; 120 is the spring plunger; 130 is the supporting cylinder; 200 is the fixture base plate; 210 is the clearance groove; and 220 is the workpiece. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. The technical methods of the present invention will be further described, but the present invention is not limited to these embodiments.

[0019] like Figure 1 As shown, this utility model provides a lever-type auxiliary support structure, including: Lever base 100, which is used to be mounted on clamp base plate 200; Lever block 110, which is hinged to lever base 100 and used to support workpiece 220; A spring plunger 120 is disposed at the bottom of the lever block 110 and is used to provide initial support force for the workpiece 220; A support cylinder 130 is located at the bottom of the lever block 110 and is used to provide rigid support force for the workpiece 220.

[0020] In other words, this auxiliary support structure is designed based on the lever principle, achieving stable support for the workpiece 220 through the synergistic effect of elastic and rigid supports. The specific support principle is explained below: First, when the workpiece 220 is placed on the lever block 110, the weight of the workpiece 220 causes the lever block 110 to rotate around the lever base 100 (in the actual processing, the top of the workpiece 220 is pressed down and fixed by other fixtures). The lever block 110 is pressed down and contacts the spring plunger 120. The spring plunger 120 provides initial elastic support force to buffer the downward pressure of the workpiece 220 and initially position the workpiece 220. Subsequently, the cylinder axis of the support cylinder 130 extends upward and contacts the lever block 110, providing rigid support force. The support force is transmitted to the support end 112 of the lever block 110 through the lever block 110, thereby achieving rigid locking of the workpiece 220 and ensuring that it will not be displaced or deformed during processing.

[0021] It should be noted that existing fixture support structures mostly use a single rigid support, which makes it difficult to balance support stability and avoidance flexibility. In machining scenarios that require the tool to be fed upwards from the bottom of the fixture (such as machining the middle crossbeam of an automobile), traditional support structures are prone to interfering with the tool path, affecting machining efficiency and accuracy, and even causing equipment damage.

[0022] In comparison, the lever-type auxiliary support structure provided in this embodiment has at least the following advantages: 1. Flexible structural layout to avoid interference: Since the lever block 110 is installed by hinge, its support point can be flexibly adjusted according to the shape of the workpiece 220 and the machining path, effectively avoiding the tool entry area and avoiding machining interference; 2. Reasonable force distribution improves machining accuracy: Through the lever principle, the rigid support force provided by the support cylinder 130 is amplified at the support end 112, thereby enhancing the clamping stability of the workpiece 220, reducing minor deformations during machining, and improving machining accuracy. 3. Staged support with strong adaptability: The spring plunger 120 provides initial flexible support, which can adapt to workpieces 220 of different weights and shapes; the support cylinder 130 then provides rigid support to ensure that the workpiece 220 remains stable during processing and avoids displacement caused by vibration or cutting force. 4. High degree of automation and convenient operation: The cooperation between the spring plunger 120 and the support cylinder 130 can realize the automatic triggering of the support process without manual intervention, thereby improving the automation level and efficiency of the fixture.

[0023] Preferably, the fixture base plate 200 has a clearance groove 210 along its central axis in the length direction. Lever blocks 110 are respectively provided on both sides of the top surface of the clearance groove 210. The workpiece 220 is located at the top of the clearance groove 210, and the two lever blocks 110 located on both sides of the clearance groove 210 are respectively supported on the bottom sides of the workpiece 220.

[0024] This structural design allows the central area to be machined on the workpiece 220 to be suspended above the clearance groove 210, providing ample space for the tool to feed upwards from the bottom of the fixture and effectively avoiding interference between the tool and the fixture support structure.

[0025] In addition, this layout not only improves the adaptability of the fixture in complex machining environments, but also enhances the positioning accuracy and clamping rigidity of the workpiece 220 during the machining process. The two lever blocks 110 arranged symmetrically achieve dual-point synchronous support, further preventing the workpiece 220 from tilting or shifting due to uneven force, thereby ensuring machining quality. It is especially suitable for machining automotive structural parts that require high-precision positioning and stable support, such as the bottom infeed machining of the middle crossbeam of an automobile.

[0026] Preferably, the two ends of the lever block 110 are a connecting end 111 and a supporting end 112, respectively. The connecting end 111 is hinged to the lever base 100, and the supporting end 112 is used to support the workpiece 220. Based on this structure, the spring plunger 120 is vertically arranged and close to or located at the bottom of the supporting end 112 of the lever block 110, so as to first contact the lever block 110 when the workpiece 220 is placed, providing initial elastic support force. The support cylinder 130 is also vertically arranged, but located at the bottom of the middle section of the lever block 110, so as to be activated after the spring plunger 120 is compressed, providing subsequent rigid support force.

[0027] This setup is based on the lever principle. By arranging the spring plunger 120 and the support cylinder 130 at different positions on the lever block 110, the supporting force is transmitted in stages. The spring plunger 120 is located near the support end 112 and can respond quickly when the workpiece 220 presses down on the lever block 110, providing flexible cushioning; The support cylinder 130 is located at the bottom of the middle section of the lever block 110. By utilizing the lever amplification effect, the rigid support force is effectively transmitted to the support end 112, thereby enhancing the clamping stability of the workpiece 220.

[0028] This structure not only enhances the fixture's adaptability and support rigidity, but also effectively avoids the uneven stress and interference problems caused by fixed support points in traditional support structures. It is particularly suitable for complex machining applications requiring high-precision positioning and stable support. Furthermore, the point where lever block 110 abuts against spring plunger 120 is an elastic support point, and the point where lever block 110 abuts against support cylinder 130 is a rigid support point. The horizontal distance from the connecting end 111 of the lever block 110 to the rigid support point is greater than the horizontal distance from the rigid support point to the elastic support point. This structural design makes full use of the lever principle. By reasonably arranging the positions of the two support points, the lever arm difference is achieved when the support force is transmitted on the lever block 110, thereby optimizing the support effect.

[0029] Specifically, when the support cylinder 130 provides rigid support force, since its point of action is far from the connection end 111 and its lever arm is long, it can effectively transmit the support force to the elastic support point near the support end 112 through the lever amplification effect, thereby enhancing the clamping rigidity and stability of the workpiece 220 support end 112. Meanwhile, the elastic support force provided by the spring plunger 120 still retains a certain buffering performance, avoiding the impact of rigid impact on the positioning of the workpiece 220. This structure not only improves the clamping accuracy of the fixture on the workpiece 220, but also enhances the adaptability and force balance of the support system, making it particularly suitable for automated processing scenarios with high requirements for support stability and machining accuracy.

[0030] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of any combination of the above technical features. The above are specific embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The technical solutions of the various embodiments of this utility model can be combined with each other, but only if they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A lever-type auxiliary support structure, characterized in that, include: A lever base for mounting on a clamp base plate; A lever block, which is hinged to the lever base and used to support the workpiece; A spring plunger is located at the bottom of the lever block and is used to provide initial support force for the workpiece; A support cylinder is located at the bottom of the lever block and is used to provide rigid support force for the workpiece.

2. The lever-type auxiliary support structure according to claim 1, characterized in that, The clamp base plate has a clearance groove along its central axis, and the lever block is provided on both sides of the top surface of the clearance groove.

3. The lever-type auxiliary support structure according to claim 2, characterized in that, The workpiece is located at the top of the clearance groove, and the two lever blocks located on both sides of the clearance groove are respectively supported on the bottom sides of the workpiece.

4. The lever-type auxiliary support structure according to claim 1, characterized in that, The lever block has a connecting end and a supporting end at its two ends. The connecting end is hinged to the lever base, and the supporting end is used to support the workpiece.

5. The lever-type auxiliary support structure according to claim 4, characterized in that, The spring plunger is vertically positioned and located near or at the bottom of the support end of the lever block.

6. The lever-type auxiliary support structure according to claim 4, characterized in that, The support cylinder is vertically positioned and located at the bottom of the middle section of the lever block.

7. The lever-type auxiliary support structure according to claim 1, characterized in that, When the workpiece is placed on the lever block, the workpiece presses the lever block down until it abuts against the spring plunger, so that the spring plunger provides initial support force for the workpiece.

8. The lever-type auxiliary support structure according to claim 1, characterized in that, When the spring plunger abuts against the lever block, the cylinder shaft of the support cylinder rises upward until it abuts against the lever block.

9. A lever-type auxiliary support structure according to claim 4, characterized in that, The cylinder shaft of the support cylinder applies a rigid support force to the lever block, which is then transmitted to the support end to lock the workpiece position.

10. A lever-type auxiliary support structure according to claim 1, characterized in that, The point where the lever block abuts against the spring plunger is an elastic support point, and the point where the lever block abuts against the support cylinder is a rigid support point. The horizontal distance from the connecting end of the lever block to the rigid support point is greater than the horizontal distance from the rigid support point to the elastic support point.

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