Fatigue-resistant clamp device for a casting support

Abstract

The utility model provides a kind of anti-fatigue fixture device for foundry support, the utility model relates to foundry technical field, including seat plate piece, the adjacent angle both ends of seat plate piece are provided with clamping plate and frame plate, seat plate piece, clamping plate and frame plate are L type alloy piece;Damping head is fixed in the end of clamping plate in seat plate piece, clamping plate extends main shaft stem to damping head inner end, and main shaft stem and damping head abutment cooperation, damping head and seat plate piece between axial clamping have bottom block;The beneficial effects of the utility model are that: device is provided with the same fixed main shaft stem and first support shaft piece, second support shaft piece in the connecting end of seat plate piece and clamping plate, the position of main shaft stem and support shaft piece is adjusted and fixed by balanced hydraulic pressure using the hydraulic bin and connecting shaft pipe sealingly connected therein, i.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, and more specifically, to an anti-fatigue clamping device for casting support components. Background Technology

[0002] Casting supports are core tooling components used to fix, position, and support castings in the casting process. Their function is to ensure that the castings maintain accurate shape and size during the filling, solidification, and cooling of high-temperature liquid metal, and to prevent deformation, displacement, or cracking. To ensure that they have high-temperature strength, fatigue resistance, and lightweight, heat-resistant steel, aluminum alloy, or ceramic materials are often selected, and stress concentration is reduced through structural optimization.

[0003] Traditional casting supports use platform or column structures with axial movement to clamp and fix the casting. Due to rigid contact between the support clamping surface and the casting, and the concentrated forces from all directions during processing, the fatigue resistance of the structure is improved solely by the material strength. However, stress accumulation at the contact surface can cause changes in the mechanical load balance of the contact surface during repeated use of the support, accelerating fixture fatigue and causing fatigue damage to the clamping surface, thus affecting the stability of processing operations. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the fatigue resistance of existing casting support components is limited by the strength of the structural material. The dual effect of stress accumulation and load balance in the structure leads to low overall fatigue performance. In view of the problems existing in the prior art, a fatigue resistance clamping device for casting support components is provided.

[0005] The purpose and effect of this utility model are achieved by the following specific technical means: including a seat plate, wherein the two adjacent corner ends of the seat plate are provided with clamping plates and frame plates, and the seat plate, clamping plates and frame plates are L-shaped alloy parts;

[0006] The seat plate has a damping head fixed in one end of the clamping plate. The clamping plate extends a main shaft into the inner end of the damping head, and the main shaft abuts against the damping head. A bottom block is axially engaged between the damping head and the seat plate.

[0007] The clamping plate has a sub-frame on the outside of the main shaft, and a first support shaft and a second support shaft are respectively provided on both sides of the sub-frame extending towards the end of the seat plate. A hydraulic chamber is formed in the bottom block, which slides with the damping head. The ends of the hydraulic chamber away from the damping head are connected to the first support shaft and the second support shaft by connecting pipes. The first support shaft and the second support shaft slide with the connecting pipes.

[0008] Furthermore, the ends of the first support shaft, the damping head, and the second support shaft are all provided with slidingly matching inner sealing shaft joint rings.

[0009] A further preferred embodiment: the first support shaft, the damping head, and the second support shaft are arranged longitudinally, and the second support shaft is hinged to the outer side of the connection end with the sub-frame with a support arm, and the support arm is hinged to the frame plate with a hinge seat.

[0010] A further preferred embodiment: a connecting plate is fixedly provided between the inner end of the hinge seat and the bottom block and the connecting tube.

[0011] A further preferred embodiment: the frame plate and the seat plate are slidably fitted with a slide rail.

[0012] A further preferred embodiment: the damping head is an elastic pad structure with a retractable stroke, and the moving stroke of the damping head and the bottom hydraulic chamber is relative to the axial distance between the main shaft and the sub-frame.

[0013] The beneficial effects of this utility model are:

[0014] This fatigue-resistant clamping device for casting support components features a main shaft and first and second support shafts fixed in the same direction at the connection end between the base plate and the clamping plate. A sealed hydraulic chamber and connecting pipe are used to adjust and fix the position of the main shaft and support shafts using balanced hydraulic pressure. During clamping, the main shaft structure supports and fixes the clamping plate, which serves as the clamping surface. The dynamic hydraulic changes of the main shaft under clamping pressure react with the support shafts on both sides, indirectly supporting and fixing the edge of the clamping plate through a sub-frame. Thus, dynamic balance ensures the mechanical load balance of the clamping structure during clamping, while the dynamic structure prevents stress accumulation on the end face of the clamping plate, improving the stability of the clamping device. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Fig. 2 This is a schematic diagram of the internal planar structure of the present invention;

[0018] Fig. 3 This is a schematic diagram of the connection structure between the main shaft and the base block of this utility model.

[0019] Figs. 1-3 In the middle: 1. Seat plate 2. Clamping plate 3. Hinge 4. Support arm 5. Slide rail 6. Main shaft 7. Sub-frame 8. First support shaft 9. Damping head 10. Second support shaft 11. Bottom block 12. Connecting plate 13. Connecting tube 14. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the following description is provided in conjunction with the accompanying drawings. Figs. 1-3 The present invention will be further described in detail below with specific embodiments. The following embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any modifications and refinements made without departing from the scope of the present invention are within the patent protection scope of the present invention.

[0021] A fatigue-resistant clamping device for casting support includes a base plate 1, with clamping plates 2 and frame plates 3 arranged at adjacent corners of the base plate 1. The base plate 1, clamping plates 2 and frame plates 3 are L-shaped alloy parts.

[0022] A damping head 10 is fixed in one end of the clamping plate 2. A main shaft 7 extends from the clamping plate 2 to the inner end of the damping head 10, and the main shaft 7 abuts against the damping head 10. A bottom block 12 is axially engaged between the damping head 10 and the seat plate 1.

[0023] The clamping plate 2 is provided with a sub-frame 8 on the outside of the main shaft 7, and the sub-frame 8 is provided with a first support shaft 9 and a second support shaft 11 extending towards the end of the seat plate 1 on both sides. A hydraulic chamber is formed in the bottom block 12, which slides with the damping head 10. The ends of the hydraulic chamber away from the damping head 10 are connected to the first support shaft 9 and the second support shaft 11 by a connecting tube 14. The first support shaft 9, the second support shaft 11 and the connecting tube 14 slide with each other.

[0024] The clamping device primarily uses the clamping plate 2 as the clamping surface for the casting support. The clamping structure mainly uses the axially connected main spindle 7 and damping head 10 as the support structure for the clamping plate 2. Based on this, the first support shaft 9 and the second support shaft 11, symmetrically distributed on the outside of the main spindle 7, connect and fix the sub-frame 8. The sub-frame 8, together with the main spindle 7, is fixed to the edge of the clamping plate 2, thus supporting the clamping plate 2. At the same time, during clamping and fixing, the axial reaction force generated by the clamping action of the clamping plate 2 will act on the damping head 10 along the direction of the main spindle 7. Combined with the compression movement of the damping head 10 in the hydraulic chamber, it axially compresses the hydraulic chamber inward, and through the passage between the coupling tube 14 and the hydraulic chamber, it acts in the opposite direction of the hydraulic pressure on the coupling tube 10. The first support shaft 9 and the second support shaft 11 connected in the pipeline 4 act axially on the sub-frame 8 to support the clamping plate 2. The main shaft 7, which acts in the opposite direction, works with the first support shaft 9 and the second support shaft 11 to balance the support surfaces of the sub-frame 8 and the main shaft 7 through hydraulic dynamic balancing after clamping and pressure, thereby completing the effective support of the clamping plate 2. The overall mechanical load balance can effectively avoid fatigue damage to the clamping surface of the clamping plate 2 caused by stress accumulation. The dynamic movable structure can be adapted to the size of the clamping and fixing surface and the clamping stroke of different castings, effectively avoiding stress accumulation caused by repeated clamping actions, and improving the structural reliability and stability of the clamping device.

[0025] like Fig. 2 , 3 As shown, the ends of the first support shaft 9, the damping head 10 and the second support shaft 11 are all provided with sliding matching inner sealing shaft joint rings. The shaft joint rings provided in the first support shaft 9, the damping head 10 and the second support shaft 11 are used to further seal the hydraulic sealing structure of the hydraulic chamber and the connecting pipe 14. The pneumatic sealing method can be selected according to the specifications.

[0026] Furthermore, the first support shaft 9, the damping head 10, and the second support shaft 11 are arranged longitudinally, and the second support shaft 11 is hinged to the outer side of the connection end with the sub-frame 8 with a support arm 5. A hinge seat 4 is hinged between the support arm 5 and the frame plate 3. Fig. 1 , 2 As shown, the clamping device, based on the vertical fixed structure, uses the inclined support arm 5 to provide oblique support for the axial structure of the sub-frame 8 and the clamping plate 2 in conjunction with the fixation of the end to the frame plate 3. This improves the influence of longitudinal force on the balance of the axial clamping surface when clamping and fixing with large longitudinal loads, and further improves the stability of the device.

[0027] Furthermore, a connecting plate 13 is fixedly installed between the inner end of the hinge 4 and the bottom block 12 and the connecting tube 14, such as... Fig. 2As shown, the connecting plate 13 is further used to connect and fix the bottom block 12 and the connecting tube 14 in each axis, so as to improve the balance and reliability of the axial structure in conjunction with the support of the frame plate 3.

[0028] Based on the above, a slide rail 6 is slidably fitted between the frame plate 3 and the base plate 1. The distance between the frame plate 3 and the base plate 1 can be adjusted by the slide rail 6 structure in the axial direction, that is, the position of the internal connecting plate 13 and the bottom block 12 and the connecting tube 14 in each axial direction can be adjusted, that is, the installation depth of the bottom block 12 and the connecting tube 14 relative to the base plate 1 can be adjusted, so as to adjust the hydraulic displacement stroke between the clamping plate 2 connected to the outer end and the hydraulic chamber of the bottom block 12 and the connecting tube 14 when the clamping movement is adjusted.

[0029] Furthermore, the damping head 10 is an elastic pad structure with a retractable stroke, and the active stroke of the damping head 10 and the hydraulic chamber of the base block 12 are relative to the axial distance between the main shaft 7 and the sub-frame 8. The balance of the supporting force between the clamping plate 2 and the main shaft 7 and the sub-frame 8 is ensured by matching the contraction and expansion strokes of the hydraulic chamber.

[0030] During installation, the two sets of frame plates 3 are placed on the processing platform in a symmetrical arrangement and fixed by hole docking and welding. The clamping action is achieved by the movement of the platform to drive the base plate 1, and the clamping plate 2 is used as the clamping surface of the device.

[0031] During clamping and fixing, the axial reaction force generated by the clamping action of the clamping plate 2 will act on the damping head 10 along the direction of the main shaft 7. In conjunction with the compression movement of the damping head 10 in the hydraulic chamber, the hydraulic chamber is compressed axially inward. Through the passage between the connecting pipe 14 and the hydraulic chamber, the hydraulic force acts in the reverse direction on the first support shaft 9 and the second support shaft 11 connected in the connecting pipe 14. This causes the first support shaft 9 and the second support shaft 11 to act axially on the sub-frame 8, so that the clamping plate 2 is supported by the sub-frame 8. The main shaft 7 and the first support shaft 9 and the second support shaft 11, which act in the reverse direction, can balance and fix the sub-frame 8 and the support surface of the main shaft 7 through the hydraulic dynamic balance after clamping and pressure, thereby completing the effective support of the clamping plate 2.

[0032] At the same time, the axial structure of the sub-frame 8 and the clamping plate 2 is obliquely supported by the obliquely arranged support arm 5, which is fixed to the end of the frame plate 3.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A fatigue-resistant clamping device for casting support components, characterized in that: It includes a seat plate (1), and clamping plates (2) and frame plates (3) are provided at the two adjacent corners of the seat plate (1). The seat plate (1), clamping plates (2) and frame plates (3) are L-shaped alloy parts. The seat plate (1) has a damping head (10) fixed in one end of the clamping plate (2). The clamping plate (2) extends a main shaft (7) to the inner end of the damping head (10), and the main shaft (7) abuts against the damping head (10). A bottom block (12) is axially engaged between the damping head (10) and the seat plate (1). The clamping plate (2) has a sub-frame (8) on the outside of the main shaft (7), and the sub-frame (8) extends to the end of the seat plate (1) on both sides, with a first support shaft (9) and a second support shaft (11) respectively. The bottom block (12) has a hydraulic chamber that slides with the damping head (10), and the ends of the hydraulic chamber away from the damping head (10) are connected to the first support shaft (9) and the second support shaft (11) by a connecting tube (14). The first support shaft (9), the second support shaft (11) and the connecting tube (14) slide with each other.

2. The fatigue-resistant clamping device for casting support components according to claim 1, characterized in that: The ends of the first support shaft (9), the damping head (10), and the second support shaft (11) are all provided with sliding matching inner sealing shaft joint rings.

3. The fatigue-resistant clamping device for casting support components according to claim 1, characterized in that: The first support shaft (9), the damping head (10), and the second support shaft (11) are arranged longitudinally, and the second support shaft (11) is hinged to the outer side of the connection end of the sub-frame (8) with a support arm (5), and the support arm (5) is hinged to the frame plate (3) with a hinge seat (4).

4. The fatigue-resistant clamping device for casting support components according to claim 3, characterized in that: A connecting plate (13) is fixedly installed between the inner end of the hinge seat (4) and the bottom block (12) and the connecting tube (14).

5. The fatigue-resistant clamping device for casting support components according to claim 1, characterized in that: The frame plate (3) and the seat plate (1) are slidably fitted with a slide rail (6).

6. The fatigue-resistant clamping device for casting support components according to claim 1, characterized in that: The damping head (10) is an elastic pad structure with a retractable stroke, and the active stroke of the damping head (10) and the hydraulic chamber of the bottom block (12) is relative to the axial distance between the main shaft (7) and the sub-frame (8).

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