A device for supporting a curved floor surface

Abstract

The utility model discloses a device of supporting arc bottom surface for clamping and fixed with the workpiece of having arc bottom surface, include: base combination, it is used for fixed installation to workstation, support clamp combination, it is detachably installed on base combination, is used for supporting the arc bottom surface of workpiece, wherein, support clamp combination includes at least two riser, and the upper end surface of riser forms the circular arc support surface that is matched with the arc bottom surface of workpiece. The utility model utilizes frock one clamping to complete the processing of various shapes of arc bottom surface parts, and the part state consistency after processing is good, and although laser cutting is a kind of mode of thermal cutting, but the deformation after cutting is small, and the thermal influence area is small. Adopting such a frock clamping, can improve the part forming quality, and the size consistency of part after cutting is good, can also improve production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of thin-walled arc-shaped bottom surface parts processing, specifically relating to a device for supporting arc-shaped bottom surfaces, used for clamping workpieces stamped into arc-shaped bottom surfaces. Background Technology

[0002] When stamping special materials into thin-walled, rounded-bottom parts, the processing method for this type of part is as follows: The higher part of the rounded bottom is placed on a work platform, and the left and right sides are visually inspected to be approximately the same height. A shim is then used to raise the other side to the same height as the higher part of the rounded bottom. Manual marking is then performed, and the side height is milled using a milling machine to ensure the height dimension. This dimension cannot be measured using measuring tools, so it is impossible to determine whether the dimensions of the machined part are up to standard. Furthermore, visual marking is not an effective processing method. In addition, the uneven thickness of the marking pen used in manual marking leads to errors, resulting in significant dimensional errors in the machined part. Even after inspection with a coordinate measuring machine, the dimensional errors are substantial, failing to guarantee the designed dimensions of the part. This directly affects the assembly clearance during assembly and welding. Since the rounded bottom only affects the product's appearance quality, it does not affect the product's performance. Utility Model Content

[0003] This utility model provides a device for supporting an arc-shaped bottom surface, which solves the processing problem of stamping special materials into thin-walled arc-shaped bottom surface parts, making clamping convenient and support stable.

[0004] To solve the above technical problems, this utility model provides a device for supporting an arc-shaped bottom surface, used for clamping and fixing workpieces with an arc-shaped bottom surface, characterized in that it includes: The base assembly is used for fixed installation to the workbench; A support fixture assembly, which is detachably mounted on the base assembly, is used to support the arc-shaped bottom surface of the workpiece; The support fixture assembly includes at least two upright plates, the upper end surface of which is formed into an arc support surface that matches the arc-shaped bottom surface of the workpiece.

[0005] Furthermore, the support clamp assembly also includes an intermediate insert plate, which is cross-connected to the at least two upright plates to enhance support stability.

[0006] Furthermore, the support fixture assembly also includes a blocking plate, which is fixed to the front end of the intermediate insert plate by a connector, for positioning and clamping from the front end face of the workpiece.

[0007] Furthermore, the base assembly includes a base plate and horizontal and vertical plates vertically disposed on the base plate, the horizontal and vertical plates being cross-connected to form a support frame.

[0008] Furthermore, the inner side of the horizontal plate is provided with a stepped structure, and the bottom of the support clamp assembly is provided with a rectangular groove that cooperates with the stepped structure. The positioning of the support clamp assembly on the base assembly is achieved through the cooperation between the stepped structure and the rectangular groove.

[0009] Furthermore, the bottom of the support fixture assembly is provided with a light hole, which allows the support fixture assembly to be selectively and directly fixed to the worktable, or indirectly installed to the worktable through the base assembly.

[0010] Furthermore, the arc support surfaces of the at least two upright plates are designed as a segmented structure to accommodate workpieces with arc-shaped bottom surfaces of different radii of curvature.

[0011] Furthermore, the horizontal plate has notches to avoid molten slag during processing or to prevent interference with the side wall of the workpiece.

[0012] Furthermore, the base assembly is configured to be used independently to support and secure box-shaped workpieces with flat bottom surfaces.

[0013] Beneficial effects: This utility model can complete the processing of various shapes of arc-shaped bottom parts in one clamping of the tooling. The processed parts have good consistency. Although laser cutting is a type of thermal cutting, the deformation after cutting is small and the heat-affected zone is small.

[0014] Using this type of tooling clamping can improve the forming quality of parts, ensure better dimensional consistency after cutting, and also improve production efficiency. Attached Figure Description

[0015] Figure 1 Base assembly diagram Figure 2 Schematic diagram of support fixture assembly Figure 3 Schematic diagram of the structure of this utility model Figure 4 Base plate 1 Figure 5 Horizontal board 2 Figure 6 Vertical board 3 Figure 7 Reinforcing rib 4 Figure 8 Intermediate plate 5 Figure 9 Support plate 6 Figure 10 front riser 7 Figure 11 Rear upright plate 8 Figure 12Intermediate insert 9 Figure 13 Rib 10 Figure 14 Block 11 Figure 15 Positioning plate 12. Detailed Implementation

[0016] To make the purpose, content and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below.

[0017] This utility model proposes a device for supporting an arc-shaped bottom surface, comprising a base assembly and a support fixture assembly. The mounting holes on the base plate 1 of the base assembly correspond to the mounting hole positions on the worktable, and the base plate 1 is fixed to the worktable using flat washers and screws. The support fixture assembly and the base assembly are connected using flat washers and bolts. The part is placed on the support fixture assembly, and the front end face of the part is fixed to the blocking plate of the support fixture assembly with bolts, followed by machining.

[0018] Figure 1 The image shows the base assembly. The base assembly can also be used alone; box-shaped parts can be directly placed upside down on the base assembly to process box-shaped parts.

[0019] The base assembly includes a base plate 1, a horizontal plate 2, a vertical plate 3, and a reinforcing rib 4; Base plate 1 ( Figure 4 The lower surface of the base plate 1 needs to be milled flat and have four smooth holes drilled in it. The position and size of the holes should match the position and size of the holes on the worktable. Six rectangular holes also need to be drilled on the base plate 1 to allow the horizontal and vertical plates 2 (2 pieces) to be aligned. Figure 5 ) and vertical plate 3 (1 piece) Figure 6 Insert the crosswise parts into the rectangular holes of the base plate 1 and spot weld them securely. Figure 7 The reinforcing rib 4 is reinforced by welding the horizontal and vertical plates 2 (2 pieces) and the longitudinal plate 3 (1 piece). After the horizontal and vertical plates 2 (2 pieces) are installed, the height error of the horizontal and vertical plates 2 (2 pieces) shall not exceed 0.2mm, with the bottom surface of the base plate 1 as the reference.

[0020] Figure 5 The horizontal plate 2 has a notch on each side, the height and depth of which can be set according to the degree of slag splashing during cutting. When the base assembly is used alone, the notches on the left and right sides of this part can be set according to the height of the side panels of the box-shaped part to prevent the side panel wrinkles from interfering with the tooling during the stamping process of the box-shaped part. When the base assembly is used alone, the protruding part at the top is used to support the bottom of the box-shaped part. When used in combination, a step is added to the inside of the horizontal plate 2, and this step is used for positioning. Figure 2 The positioning block on the base plate 5 of the support fixture assembly, and the length of the protruding platform on the horizontal plate 2 are... Figure 8 The length of the rectangular groove in the base plate 5 matches the thickness of the horizontal and vertical plates 2. Figure 8 The width of the rectangular groove on the base plate 5 is matched to facilitate... Figure 2 Support clamp assembly sleeve Figure 1 On the base assembly. The height of the inner step of the horizontal plate 2 is based on... Figure 2 The base plate 5 of the support fixture assembly ( Figure 8 ) and base plate 6 ( Figure 9 The thickness is determined by the thickness of the base plate 5. When the base plate 5 is fitted onto the base assembly, its thickness is consistent with the height of the protruding platforms of the horizontal and vertical plates 2 and 3. A narrow groove is cut at the upper middle of the horizontal plate 2. The width of the groove is determined by the thickness of the vertical plate 3. The groove depth of the horizontal plate 2 matches the groove depth of the vertical plate 3. After the two parts are cross-inserted, the protruding platforms at the bottom of the horizontal and vertical plates are inserted into the rectangular grooves cut on the base plate 1. The base plate 1, horizontal plate 2, and vertical plate 3 are spot-welded firmly to ensure the stability of the tooling.

[0021] Figure 6 The vertical plate 3 has protruding platforms on both sides to support the side panels of the box-shaped part. The height of these platforms is determined by the flat position of the side panels after stamping. An L-shaped support is designed on one of the recessed sides to support the base of the box-shaped part. This design also prevents scrap from hitting the equipment when it falls during the cutting of the side panels, and prevents the part from shifting laterally when scrap falls at the end of the cut. The length of the protruding platform at the bottom of the vertical plate 3 matches the length of the rectangular groove on the base plate 1, and the width matches the thickness of the base plate 1. The vertical plate 3 is inserted into the base plate 1 using this protrusion, and all fits are clearance fits.

[0022] Figure 2 The support clamp assembly shown includes an intermediate plate 5, a support plate 6, a front upright plate 7, a rear upright plate 8, an intermediate insert plate 9, a stiffening plate 10, a blocking plate 11, and a positioning plate 12. Figure 8 The upper surface of the middle plate 5 needs to be milled flat and have four holes drilled to make it flush with the surface. Figure 9 The lower surfaces of support plate 6 are fitted together, and the two plates are fixed together using flat washers, bolts, and nuts; then four rectangular holes are drilled, oriented in the same direction as... Figure 5 The horizontal and vertical plates 2 are aligned so that they can fit onto the raised platform of the horizontal and vertical plates 2 and are positioned by the raised steps on the inner side of the horizontal and vertical plates 2.

[0023] Figure 9 The lower surface of support plate 6 needs to be milled flat and have four holes drilled. The position and size of the holes are the same as those of the support plate 6. Figure 8 The positions and dimensions of the holes in the middle plate are matched; six rectangular holes also need to be drilled on the support plate 6 to make... Figure 10 Front riser 7. Figure 11 Rear upright plate 8 and Figure 12The intermediate insert plate 9 is inserted crosswise into the rectangular hole of the support plate 6 and spot-welded securely. The upper surfaces of the front upright plate 7 and the rear upright plate 8 are arc surfaces, and the radius of the arc is the same as the radius of the arc that the bottom surface of the workpiece fits against. The arc surfaces of the front upright plate 7 and the rear upright plate 8 are to fit against the arc bottom surface of the supporting workpiece; therefore, the surface roughness requirement is no greater than 12.5 μm. A groove is cut in the middle of the arc surface of the front upright plate 7 and the rear upright plate 8, and a groove is cut on the lower end face of the intermediate insert plate 9. The depth of the front upright plate 7 and the rear upright plate 8 matches the depth of the groove on the lower end face of the intermediate insert plate 9. Two bosses are added to the lower end face of each of the front upright plate 7 and the rear upright plate 8. The positioning dimensions and length of the bosses match the positioning dimensions and length of the rectangular holes in the support plate 6, and the width is the same as the workpiece thickness of the support plate 6. The two lower bosses of the front upright plate 7 and the rear upright plate 8 are inserted into the support plate 6, paying attention to the insertion direction. At the same time, support ribs for supporting the side walls of the workpiece should be reserved on both the left and right sides of the front upright plate 7 and the rear upright plate 8. Note that the contact area with the side wall of the workpiece should be in effective contact, and should not be too large or too small. The front end of the intermediate insert plate 9 is designed as a concave platform. The length of the concave platform depends on the opening size of the workpiece. The purpose of the boss is to prevent damage to the support fixture when machining the front opening. The surface quality of the front end should reach 12.5μm to facilitate support of the inner wall of the workpiece. Figure 13 The stiffening plates 10 (2 pieces) are welded at equal intervals to the middle insert plate 9 to enhance the stability of the support fixture.

[0024] Reference Figure 2 As shown, in order to strengthen the support force of the workpiece, in the support fixture assembly... Figure 12 A hole is drilled at the front end of the middle insert plate 9. The size of the hole depends on the size of the piece that is fixed to the front end with a bolt. Figure 14 The width and thickness of the blocking plate 11 are specified. The workpiece is fixed to the blocking plate 11 with bolts to ensure reliable front-end positioning. An additional layer is added at the rear end. Figure 15 Positioning plates 12 (3 pieces) are required, and the positioning surfaces need to be machined to ensure that the roughness is not greater than 12.5μm.

[0025] This process unit primarily employs assembly and welding to ensure overall dimensions. Based on current usage, both the mating and positioning surfaces require machining to guarantee assembly accuracy. The base assembly can also be used independently to process box-shaped parts stamped into flat bottoms. When processing parts with curved bottoms, the support fixture assembly is fitted onto the base assembly, allowing this single tooling set to be used for processing different types of parts, offering convenience and speed. The support fixture assembly can also be used independently; the position and dimensions of the holes on the base plate 5 match the position and dimensions of the holes on the worktable. This fixture can be used independently on the worktable or mounted on the base assembly, making it suitable for various scenarios and widely applicable.

[0026] The key points of this utility model are as follows: 1. The process device for fixing the workpiece with a fixed arc bottom surface is simple in design and easy to operate. The front blocking plate and the rear positioning plate can be replaced according to different openings. It is suitable for processing parts with different opening sizes and depths within a certain range.

[0027] 2. Base assembly design: This design is universal, allowing for the replacement of the upper support assembly to accommodate different support fixtures and a wider variety of parts to be processed. The base assembly acts as a bridge connecting the workpiece and the worktable, designed according to the height and stroke of the machine tool's tool post.

[0028] 3. The front upright plate 7, the rear upright plate 8, and the middle insert plate 9 need to be designed according to the curvature of the curved bottom part. If it is convenient to use more parts, the curved surface can be designed to be broken into segments. The three-point fixed surface mode can be combined to take into account parts with the same shape and parts with slightly different arc dimensions, thereby improving the tooling versatility.

[0029] 4. Based on the opening size and weight of the part, select the thickness of the front endplate and the distance between the middle insert plate.

[0030] The stamped arc-shaped bottom part utilizes the fixing and clamping process device of this invention. The part is inverted and clamped onto the fixture, with the front end fixed by a blocking plate, the rear end positioned by a positioning plate of the support fixture, and the top surface supported by a pin apex plate. A three-dimensional laser cutting process is employed to machine the arc-shaped bottom part and its irregular holes in a single positioning operation, eliminating the need for secondary clamping. This improves product quality and production efficiency, and solves the problem of machining arc-shaped bottom parts.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A device for supporting an arc-shaped bottom surface, used for clamping and fixing a workpiece having an arc-shaped bottom surface, characterized in that, include: The base assembly is used for fixed installation to the workbench; A support fixture assembly, which is detachably mounted on the base assembly, is used to support the arc-shaped bottom surface of the workpiece; The support fixture assembly includes at least two upright plates, the upper end surface of which is formed into an arc support surface that matches the arc-shaped bottom surface of the workpiece.

2. The device for supporting an arc-shaped bottom surface according to claim 1, characterized in that, The support clamp assembly also includes an intermediate insert plate, which is cross-connected to the at least two upright plates to enhance support stability.

3. The device for supporting an arc-shaped bottom surface according to claim 2, characterized in that, The support fixture assembly also includes a blocking plate, which is fixed to the front end of the intermediate insert plate by a connector, for positioning and clamping from the front end face of the workpiece.

4. The device for supporting an arc-shaped bottom surface according to claim 1, characterized in that, The base assembly includes a base plate and horizontal and vertical plates vertically disposed on the base plate, the horizontal and vertical plates being cross-connected to form a support frame.

5. The device for supporting an arc-shaped bottom surface according to claim 4, characterized in that, The inner side of the horizontal plate is provided with a stepped structure, and the bottom of the support clamp assembly is provided with a rectangular groove that cooperates with the stepped structure. The positioning of the support clamp assembly on the base assembly is achieved by the cooperation between the stepped structure and the rectangular groove.

6. The device for supporting an arc-shaped bottom surface according to claim 1, characterized in that, The bottom of the support clamp assembly is provided with a light hole, which allows the support clamp assembly to be selectively and directly fixed to the worktable, or indirectly installed to the worktable through the base assembly.

7. The device for supporting an arc-shaped bottom surface according to claim 1, characterized in that, The arc support surfaces of the at least two upright plates are designed as a segmented structure to accommodate workpieces with arc-shaped bottom surfaces of different radii of curvature.

8. The device for supporting an arc-shaped bottom surface according to claim 4, characterized in that, The horizontal plate has notches to avoid molten slag during processing or to prevent interference with the side wall of the workpiece.

9. The device for supporting an arc-shaped bottom surface according to claim 1, characterized in that, The base assembly is configured to be used independently to support and secure box-shaped workpieces with flat bottom surfaces.

Images