A double flange thin-walled special-shaped parts shaping and fixing structure

Abstract

A double-flange thin-walled special-shaped part shaping and fixing structure includes a positioning lower die, a positioning upper die is provided on the upper end of the positioning lower die, the positioning upper die and the positioning lower die have a fixing clamping groove on the fitting surface, the fixing clamping groove is arranged along the length direction, the groove wall of the fixing clamping groove is provided with multiple grooves, the positioning lower die and the positioning upper die are both provided with a first through-slot on one side, and the two first through-slots are both clamped with a first baffle, the positioning lower die and the positioning upper die are both provided with a second through-slot on the other side, and the two second through-slots are both clamped with a second baffle, when the positioning upper die and the positioning lower die are fitted, both end faces have a fixing clamping groove, the fixing clamping groove is provided with a retaining ring, and the end faces adjacent to the first baffle and the second baffle are both provided with an inclined surface. The double-flange thin-walled special-shaped part shaping and fixing structure proposed by the present invention eliminates, avoids or reduces stress release during the machining process of the drum rack, thereby preventing deformation of the final product and affecting its quality.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing equipment, in particular to a double flange thin-wall special-shaped part shaping and fixing structure. Background Art

[0002] The drum rack is made of material ZL101A-T6 Class I, and its shape is similar to a product with flanges at both ends and a hollow cylinder in the middle. The outer circle of the hollow cylinder is composed of irregular shaped bosses in different directions, such as Figure 7 As shown in the figure, the product must meet the following conditions: the outer diameter of the center cylinder must be unmachined, with a cylindricity of 0.05, a wall thickness of 1.5mm, a diameter tolerance of 0.2mm, and a wall thickness tolerance of no more than 0.1mm; the inner end faces of the two flanges must be unmachined, with a wall thickness of 2mm and a tolerance of 0.1mm; the perpendicularity between the cylinder (i.e., the support tube) and the flange must be 0.05; and the flange spacing must be 389mm with a tolerance of 0.2mm. Under such stringent dimensional and geometric tolerance requirements, the final product produced through the production process is prone to deformation, resulting in an overall pass rate of less than 30%. The main causes of deformation are: deformation during the wax mold pressing process; deformation during the shell forming process; deformation during cooling during casting; deformation during heat treatment; and deformation during stress release during machining. Stress release during machining is one of the causes. To address this stress release deformation during machining, a double-flange thin-walled, special-shaped component shaping and fixing structure was proposed. Summary of the Invention

[0003] The purpose of the present invention is to propose a double flange thin-walled special-shaped parts shaping and fixing structure to solve the above problems, so that the drum rack can eliminate, avoid or reduce stress release during the machining process, and avoid deformation of the final product and affect the quality.

[0004] In order to achieve the above-mentioned purpose, the following technical solution is adopted: a double flange thin-walled special-shaped part shaping and fixing structure, including a positioning lower mold, the upper end of the positioning lower mold is fitted with a positioning upper mold, the fitting surfaces of the positioning upper mold and the positioning lower mold have a fixing clamping groove, the cross-section of the fixing clamping groove is a circular structure, the fixing clamping groove is arranged along the length direction, the groove wall of the fixing clamping groove is provided with multiple grooves, and the multiple grooves are irregularly arranged.

[0005] Preferably, a first through slot is provided on one side of the positioning lower mold and the positioning upper mold, and a first baffle is provided on both of the first through slots; a second through slot is provided on the other side of the positioning lower mold and the positioning upper mold, and a second baffle is provided on both of the second through slots.

[0006] Preferably, when the positioning upper mold and the positioning lower mold are fitted together, both end surfaces are provided with fixing slots, and the fixing slots are provided with retaining rings.

[0007] Preferably, the adjacent end surfaces of the first baffle and the second baffle are both provided with inclined surfaces, so that the two first baffles and the two second baffles are in a compressed state when the positioning upper mold and the positioning lower mold are fitted and fixed.

[0008] Preferably, a support groove is provided in the middle of the fixing clamping groove on the positioning lower mold along the front-to-back direction, and a support seat is provided on the support groove.

[0009] Preferably, the four corners of the positioning upper mold and the positioning lower mold are fixedly connected by bolts.

[0010] Preferably, the fitting surfaces of the four corners of the upper positioning die and the lower positioning die are jointly provided with limiting grooves, and each limiting groove is provided with two limiting columns, the two limiting columns are coaxially arranged and provided with the same connecting hole, and the bolt is provided through the connecting hole.

[0011] Preferably, it also includes a tube rack, which has flanges at both ends, and a support tube is arranged between the two flanges, wherein two symmetrical support platforms are commonly connected between the inner end surface of one flange and the support tube, and the support platform is provided with a groove along the length direction of the support tube, and the other end of the groove extends to the outer end surface of the flange, so that the support platform has a ring structure with three sides open, and the outer surface of the support tube, the outer surface of the support platform and the end surfaces of the two flanges are all provided with bosses.

[0012] Preferably, the boss matches the groove, the fixing clamp groove matches the outer surface of the support tube; the inner end faces of the flange match the first baffle and the second baffle respectively; the outer end faces of the flange match the retaining ring respectively; the two adjacent end faces of the two first baffles match the surface of the support tube, the two adjacent end faces of the two second baffles match the surface of the support tube and the surface of the support platform, and the upper surface of the support seat matches the surface of the support tube.

[0013] The beneficial effects achieved by the present invention are:

[0014] The present invention provides a double flange thin-walled special-shaped parts shaping and fixing structure, which ensures the cylindricity, outer circle tolerance, form and position tolerance and other dimensions during the mechanical processing and pressure holding process by setting a positioning lower die, a positioning upper die, a fixing clamping groove, a first through groove, a first baffle, a second through groove, a second baffle, a fixing clamping groove, a retaining ring, a support groove and a support seat, so that the cylinder rack can eliminate, avoid or reduce stress release during the mechanical processing process, avoid deformation of the final product and affect the quality, thereby improving the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front axonometric structural diagram of a double flange thin-walled special-shaped part shaping and fixing structure of the present invention.

[0016] Figure 2This is a schematic diagram of the rear axonometric structure of a double flange thin-walled special-shaped part shaping and fixing structure of the present invention.

[0017] Figure 3 This is a schematic diagram of the exploded structure of a double flange thin-walled special-shaped part shaping and fixing structure of the present invention.

[0018] Figure 4 This is a schematic diagram of the positioning lower die structure of a double flange thin-walled special-shaped part shaping and fixing structure of the present invention.

[0019] Figure 5 This is a schematic diagram of the positioning upper die structure of a double flange thin-walled special-shaped part shaping and fixing structure of the present invention.

[0020] Figure 6 This is a schematic diagram of the second baffle structure of a double flange thin-walled special-shaped part shaping and fixing structure of the present invention.

[0021] Figure 7 Schematic diagram of the drum rack structure.

[0022] Figure 8 This is a schematic diagram of the internal structure of a double flange thin-walled special-shaped part shaping and fixing structure connected to a cylinder rack according to the present invention.

[0023] In the figure, 1-positioning lower mold, 2-positioning upper mold, 3-fixing clamping groove, 4-first through groove, 5-first baffle, 6-second through groove, 7-second baffle, 8-fixing clamping groove, 9-retaining ring, 10-support groove, 11-support seat, 12-limiting groove, 13-limiting column, 14-cylinder rack, 141-flange, 142-support cylinder, 143-support platform, 144-cutting groove, 145-boss. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0026] See attached Figure 1-8, a double flange thin-walled special-shaped part shaping and fixing structure, including a positioning lower mold 1, a positioning upper mold 2 is fitted on the upper end of the positioning lower mold 1, and the fitting surfaces of the positioning upper mold 2 and the positioning lower mold 1 have a fixing clip groove 3, the cross section of the fixing clip groove 3 is a circular structure, the fixing clip groove 3 is arranged along the length direction, the groove wall of the fixing clip groove 3 is provided with multiple grooves, and the multiple grooves are irregularly arranged; one side of the positioning lower mold 1 and the positioning upper mold 2 is provided with a first through groove 4, the two first through grooves 4 are clamped with a first baffle 5, the other side of the positioning lower mold 1 and the positioning upper mold 2 is provided with a second through groove 6, and the two second through grooves 6 are clamped with a second baffle 7; when the positioning upper mold 2 and the positioning lower mold 1 are fitted, both end faces are provided with a fixing slot 8, and a retaining ring 9 is provided on the fixing slot 8; the adjacent end faces of the first baffle 5 and the second baffle 7 are provided with inclined surfaces, so that when the positioning upper mold 2 and the positioning lower mold 1 are fitted and fixed, the two first baffles 5 and the two second baffles 7 are in a compressed state. Avoid deformation of the fixed barrel rack 14 during the pressure holding process; specifically, during shaping, the shaping process adopts a two-step separation targeted shaping method, and uses the positioning lower mold 1 and the positioning upper mold 2 to laterally avoid the boss 145 on the barrel rack 14, and the boss 145 is locked with the groove, and the four bolts are locked. A pressure of 15 tons is used to hold the pressure for 20S to ensure the cylindricity and outer circle tolerance; through the first baffle 5 and the second baffle 7, a pressure of 15 tons is held for 25S to ensure the remaining dimensions and form and position tolerances, so that the barrel rack 14 eliminates, avoids or reduces stress release during the machining process, avoids deformation of the final product and affects the quality, and thus improves the qualified rate of the final product.

[0027] In this embodiment, as a preferred embodiment of the above embodiment, in order to further play a supporting role, a support groove 10 is provided in the middle of the fixing clamping groove 3 on the positioning lower mold 1 along the front-to-back direction, and a support seat 11 is provided on the support groove 10.

[0028] In this embodiment, as a preferred embodiment of the above embodiment, in order to achieve the fixation of the positioning upper mold and the positioning lower mold, the four corners of the positioning upper mold 2 and the positioning lower mold 1 are fixedly connected by bolts; further, in order to achieve the limiting effect, the fitting surfaces of the four corners of the positioning upper mold 2 and the positioning lower mold 1 are jointly provided with limiting grooves 12, and each limiting groove 12 is provided with two limiting columns 13, the two limiting columns 13 are coaxially arranged and have the same connecting hole, and the bolts are arranged through the connecting hole.

[0029] It also includes a cylinder rack 14, which has flanges 141 at both ends, and a support cylinder 142 is arranged between the two flanges 141. Two symmetrical support platforms 143 are commonly connected between the inner end surface of one flange 141 and the support cylinder 142. The support platform 143 is provided with a groove 144 along the length direction of the support cylinder 142, and the other end of the groove 144 extends to the outer end surface of the flange 141, so that the support platform 143 has a ring structure with three sides open, and the outer surface of the support cylinder 142, the outer surface of the support platform 143 and the adjacent end surfaces of the two flanges 141 are all provided with bosses 145.

[0030] During the specific cooperation, the boss 145 matches the groove, and the fixing clamping groove 3 matches the outer surface of the support tube 142; the inner end faces of the flange 141 match the first baffle 5 and the second baffle 7 respectively; the outer end faces of the flange 141 match the retaining ring 9 respectively; the two adjacent end faces of the two first baffles 5 match the surface of the support tube 142, and the two adjacent end faces of the two second baffles 7 match the surfaces of the support tube 142 and the support platform 143, and the upper surface of the support seat 11 matches the surface of the support tube 142; through the above-mentioned cooperation with the cylinder frame 14, the cylindricity, outer circle tolerance, form and position tolerance and other dimensions are guaranteed, thereby improving the qualified rate of the final product.

[0031] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A double flange thin-walled special-shaped part shaping and fixing structure, comprising a positioning lower die (1), characterized in that: The upper end of the positioning lower mold (1) is fitted with a positioning upper mold (2), and the fitting surfaces of the positioning upper mold (2) and the positioning lower mold (1) have a fixed clamping groove (3), the fixed clamping groove (3) is arranged along the length direction, and the groove wall of the fixed clamping groove (3) is provided with a plurality of grooves; One side of the positioning lower die (1) and the positioning upper die (2) is provided with a first through slot (4), and the two first through slots (4) are both clamped with a first baffle (5); the other side of the positioning lower die (1) and the positioning upper die (2) is provided with a second through slot (6), and the two second through slots (6) are both clamped with a second baffle (7); When the positioning upper die (2) and the positioning lower die (1) are fitted together, both end surfaces are provided with a fixing slot (8), and a retaining ring (9) is provided on the fixing slot (8); A support groove (10) is provided in the middle of the fixing clamping groove (3) on the positioning lower die (1) along the front-back direction, and a support seat (11) is provided on the support groove (10); It also includes a drum rack (14), wherein both ends of the drum rack (14) have flanges (141), a support drum (142) is provided between the two flanges (141), and two symmetrical support platforms (143) are commonly connected between the inner end surface of one flange (141) and the support drum (142), and the support platform (143) is provided with a groove (144) along the length direction of the support drum (142), and the other end of the groove (144) extends to the outer end surface of the flange (141), so that the support platform (143) has a ring structure with three sides open, and the outer surface of the support drum (142), the outer surface of the support platform (143) and the adjacent end surfaces of the two flanges (141) are all provided with bosses (145); The boss (145) matches the groove, and the fixing clamp groove (3) matches the outer surface of the support tube (142); the inner end surfaces of the flange (141) respectively match the first baffle (5) and the second baffle (7); the outer end surfaces of the flange (141) respectively match the retaining ring (9); the two adjacent end surfaces of the two first baffles (5) match the support tube (142), the two adjacent end surfaces of the two second baffles (7) match the surface of the support tube (142) and the surface of the support platform (143), and the upper surface of the support seat (11) matches the surface of the support tube (142).

2. The double flange thin-walled special-shaped part shaping and fixing structure according to claim 1, characterized in that: The adjacent end surfaces of the first baffle (5) and the second baffle (7) are both provided with inclined surfaces, so that when the positioning upper die (2) and the positioning lower die (1) are fitted and fixed, the two first baffles (5) and the two second baffles (7) are both in a compressed state.

3. The double flange thin-walled special-shaped part shaping and fixing structure according to claim 1, characterized in that: The positioning upper die (2) and the positioning lower die (1) are fixedly connected at four corners by bolts.

4. The double flange thin-walled special-shaped part shaping and fixing structure according to claim 3, characterized in that: The fitting surfaces at the four corners of the positioning upper die (2) and the positioning lower die (1) are jointly provided with limiting grooves (12), and each limiting groove (12) is provided with two limiting columns (13). The two limiting columns (13) are coaxially arranged and provided with the same connecting hole, and the bolt is provided through the connecting hole.

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