Flap expanding tool for titanium alloy cylinder products
By designing a combination tooling for screws, nuts, expansion valves, mandrels, and base plates, the problem of deformation of titanium alloy cylinders under high temperatures was solved, uniform force control of parts was achieved, production costs were reduced, and efficiency was improved.
Patent Information
- Application Number
- CN202520094339.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-01-15
AI Technical Summary
Existing titanium alloy cylinder shaping fixtures cannot effectively control the deformation trend of parts under high temperature conditions, resulting in high production costs and low efficiency. This is especially true for 3D printed titanium alloy parts, which have small port diameters, large cylinder diameters, and long overall lengths, making it impossible to meet the dimensional and positional tolerances required for delivery.
A tooling for expanding valves of titanium alloy cylindrical products was designed, comprising a screw, nut, expanding valve, mandrel, cover plate, and base plate. The screw and nut work together to ensure that there is no height difference in the axial direction of the expanding valve. Combined with the mandrel guiding the sliding, the part is subjected to uniform force at high temperature, and the deformation trend is controlled.
It effectively controls the deformation of parts under high temperature conditions, reduces production costs, improves production efficiency, and simplifies the assembly and disassembly process.
Smart Images
Figure CN223902650U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to metal processing technical field, concretely relates to a kind of bulging tooling of titanium alloy cylinder product. BACKGROUND
[0002] Titanium and titanium alloy are more and more widely used in aviation, aerospace, medical and other industries due to high strength, corrosion resistance, excellent high-low temperature performance and other characteristics, but the ratio of yield strength and elastic modulus of titanium plate is very large, the springback of parts formed at room temperature is serious, and the forming precision is poor, so hot calibration method is often used to improve the precision of parts.
[0003] However, the existing titanium alloy cylinder calibration tool is used, and the parts targeted are generally small-sized thin-walled parts, and the structure is relatively simple, while some 3D printed titanium alloy parts have small port diameter, large cylinder diameter and long overall length, and the deformation of the parts after printing and forming is large, and the shape and position tolerances such as cylinder roundness and straightness cannot meet the delivery requirements, so a kind of bulging tooling of titanium alloy cylinder product is set. UTILITY MODEL CONTENT
[0004] The utility model discloses a kind of bulging tooling of titanium alloy cylinder product, the utility model is provided with screw rod, nut, bulging, mandrel, cover plate and bottom plate, solve the problem that the existing titanium alloy cylinder calibration tool cannot effectively control the deformation trend of parts under high temperature state when using, increase production cost, and the problem of low production efficiency.
[0005] The utility model discloses a kind of bulging tooling of titanium alloy cylinder product, the utility model is provided with screw rod, nut, bulging, mandrel, cover plate and bottom plate, solve the problem that the existing titanium alloy cylinder calibration tool cannot effectively control the deformation trend of parts under high temperature state when using, increase production cost, and the problem of low production efficiency.
[0006] By adopting the technical scheme, the screw rod is put into the mandrel, then the cover plate is placed on the top of the expansion petals, so that the cover plate passes through the screw rod, then the nut outside the screw rod is rotated, the height difference of all the expansion petals in the axial direction is ensured to be zero, then the bottom plate is placed on the expansion petals, and the bottom end of the screw rod passes through the bottom plate, the expansion petals slide along the mandrel to reduce the overall diameter of the tool body, then the part to be corrected is pressed into the tool body, then the nut at the other end of the screw rod is tightened to the bottom of the part and the bottom plate of the tool body is in full contact, and the tool body and the part are installed into the furnace after being installed, and the temperature is raised to a specified temperature for correction, so that the deformation trend of the part in the high-temperature state is effectively controlled, the production cost is saved, the production efficiency is improved, and the structure is simple and easy to assemble and disassemble.
[0007] According to the thermal expansion formula, the expansion amount of the material in the high-temperature state can be obtained:
[0008] △L=α×△T×L, wherein α is the linear expansion coefficient of the material, and the unit is 1 / ℃; △T is the temperature change, and the unit is ℃; L is the initial length of the material, and the unit is mm.
[0009] Ltool=Lpart×(1+α1×△T) / (1+α2×△T), wherein α1 and α2 respectively represent the linear expansion coefficients of the part and the tool.
[0010] Specifically, the bottom of the bottom plate is fixed with a pad plate.
[0011] By adopting the technical scheme, the pad plate installed at the bottom of the bottom plate increases the friction force at the bottom of the bottom plate, and improves the stability of the bottom plate.
[0012] Specifically, the size of the inner side of the nut is consistent with the size of the outer side of the screw rod.
[0013] By adopting the technical scheme, when the nut is rotated outside the screw rod, the inner side of the nut is consistent with the outer side of the screw rod, so that the nut is facilitated to rotate outside the screw rod.
[0014] Specifically, the size of the inner side of the mandrel is consistent with the size of the outer side of the screw rod.
[0015] By adopting the technical scheme, when the screw rod is put into the inner side of the mandrel, the size of the inner side of the mandrel is consistent with the size of the outer side of the screw rod, so that the screw rod is facilitated to be put into the inner side of the mandrel.
[0016] The beneficial effects of the utility model are as follows:
[0017] The utility model discloses a kind of expansion of titanium alloy cylinder product's petal tool, screw rod is loaded into mandrel, subsequently cover is placed to expansion of petal top, so that cover passes through screw rod, subsequently nut outside screw rod is rotated, ensure that all expansion of petal has no height difference in axial direction, then bottom plate is placed to expansion of petal, and make screw rod bottom end pass through bottom plate, expansion of petal is guided to slide with mandrel, and the overall diameter of tool body is reduced, subsequently the part needing to be shaped is pressed into tool body, subsequently nut of another end of screw rod is tightened to the part bottom and tool body bottom plate complete contact, tool body and part installation are completed and go into furnace, and temperature is raised to specified temperature and is shaped, the structure of expansion of petal makes the stress of part in each direction even when shaping, to ensure that the roundness and straightness of part after shaping, to effectively control the deformation trend of part in high temperature state, save production cost, improve production efficiency, and structure is simple, easy to assemble and disassemble. BRIEF DESCRIPTION OF DRAWINGS
[0018] The utility model is further described below in combination with drawings and embodiments.
[0019] Figure 1 It is whole structure schematic diagram for the utility model of a kind of expansion of titanium alloy cylinder product's petal tool;
[0020] Figure 2 It is expansion of petal overhead structure schematic diagram for the utility model of a kind of expansion of titanium alloy cylinder product's petal tool;
[0021] Figure 3 It is expansion of petal side view internal structure schematic diagram for the utility model of a kind of expansion of titanium alloy cylinder product's petal tool;
[0022] Figure 4 It is mandrel overhead structure schematic diagram for the utility model of a kind of expansion of titanium alloy cylinder product's petal tool;
[0023] Figure 5 It is side view internal structure schematic diagram for the utility model of a kind of expansion of titanium alloy cylinder product's petal tool;
[0024] Figure 6 It is part assembly structure schematic diagram for the utility model of a kind of expansion of titanium alloy cylinder product's petal tool;
[0025] In the drawing: 1, expansion of petal;2, cover;3, nut;4, screw rod;5, mandrel;6, backing plate;7, bottom plate;8, part;9, tool body. DETAILED DESCRIPTION
[0026] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.
[0027] In order to control the deformation tendency of the part 8 in high temperature state, as an embodiment of the utility model, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 And Figure 6 The utility model discloses a kind of expansion of titanium alloy cylinder product's petal tool, including tool body 9, the tool body 9 inside is provided with petal 1, and petal 1 is provided with multiple groups, the inside of petal 1 is inserted with the mandrel 5 of petal 1 fixed, the inside of mandrel 5 is inserted with screw rod 4, the outside of screw rod 4 is symmetrically connected with nut 3, the bottom of petal 1 is provided with the bottom plate 7 of the support of mandrel 5, the top of petal 1 is clamped with the cover plate 2 of petal 1 fixed, the outside of petal 1 is equipped with the part 8 of processing.
[0028] In use, screw rod 4 is loaded into mandrel 5, then cover plate 2 is placed to the top of petal 1, so that cover plate 2 passes through screw rod 4, then nut 3 outside screw rod 4 is rotated, ensure that all petal 1 has no height difference in axial direction, then bottom plate 7 is placed to petal 1, and make screw rod 4 bottom end pass through bottom plate 7, petal 1 is guided to slide with mandrel 5, and the overall diameter of tool body 9 is reduced, then the part 8 needing to be shaped is pressed into tool body 9, then the nut 3 of the other end of screw rod 4 is tightened to the bottom of part 8 and bottom plate 7 of tool body 9 is completely contacted, after tool body 9 and part 8 are installed, go into furnace, heat to specified temperature and shape, so that the deformation tendency of part 8 in high temperature state is effectively controlled, production cost is saved, and production efficiency is improved;
[0029] According to thermal expansion formula, the expansion amount of material in high temperature state can be obtained:
[0030] △L=α×△T×L, wherein α is material linear expansion coefficient, unit 1 / ℃;△T is temperature change amount, unit is ℃;L is material initial length, unit is mm.
[0031] Ltool=Lpart×(1+α1×△T) / (1+α2×△T), wherein α1 and α2 represent linear expansion coefficient of part and tool respectively.
[0032] In order to improve the stability of bottom plate 7, as shown in Figure 1 The utility model also includes, the bottom plate 7 bottom screw fixed with batten 6.
[0033] In use, the batten 6 installed at the bottom of bottom plate 7 increases the friction of the bottom of bottom plate 7, and improves the stability of bottom plate 7.
[0034] In order to make nut 3 rotate outside screw rod 4, as shown in Figure 1The utility model discloses still include, the inside size of nut 3 is consistent with the outside size of screw rod 4.
[0035] When the nut 3 rotates outside the screw rod 4, the inside of the nut 3 is consistent with the outside of the screw rod 4, facilitating the rotation of the nut 3 outside the screw rod 4.
[0036] In order to make the screw rod 4 put into the inside of the mandrel 5, exemplary, such as Figure 1 The utility model discloses still include, the inside size of mandrel 5 is consistent with the outside size of screw rod 4.
[0037] When the screw rod 4 is put into the inside of the mandrel 5, the inside size of the mandrel 5 is consistent with the outside size of the screw rod 4, facilitating the putting of the screw rod 4 into the inside of the mandrel 5.
[0038] The utility model discloses when using, screw rod 4 is loaded into mandrel 5, subsequently cover plate 2 is placed to the top of expansion petal 1, make cover plate 2 pass through screw rod 4, subsequently rotate the nut 3 outside screw rod 4, guarantee all expansion petal 1 in axial direction has no height difference, then bottom plate 7 is placed to expansion petal 1, and make screw rod 4 bottom end pass through bottom plate 7, and expansion petal 1 is oriented with mandrel 5 and slides and makes the overall diameter of tool main part 9 small, subsequently the part 8 that needs to be shaped is pressed into tool main part 9, subsequently the nut 3 of another end of screw rod 4 is tightened to the bottom of part 8 and tool main part 9 bottom plate 7 complete contact, after tool main part 9 and part 8 are installed, go to the furnace, and heat to specified temperature and shape, thereby effectively control the deformation trend of part 8 under high temperature state, save production cost, improve production efficiency;
[0039] According to thermal expansion formula, the expansion amount of material under high temperature state can be obtained:
[0040] △L=α×△T×L, wherein α is the linear expansion coefficient of material, unit 1 / ℃; △T is the temperature change amount, unit ℃; L is the initial length of material, unit mm;
[0041] Ltool=Lpart×(1+α1×△T) / (1+α2×△T), wherein α1 and α2 represent the linear expansion coefficients of part and tool respectively;
[0042] The friction of the bottom plate 7 is increased by the base plate 6 installed at the bottom of the bottom plate 7, and the stability of the bottom plate 7 is improved.
[0043] When the nut 3 rotates outside the screw rod 4, the inside of the nut 3 is consistent with the outside of the screw rod 4, facilitating the rotation of the nut 3 outside the screw rod 4.
[0044] When the screw rod 4 is put into the inside of the mandrel 5, the inside size of the mandrel 5 is consistent with the outside size of the screw rod 4, facilitating the putting of the screw rod 4 into the inside of the mandrel 5.
[0045] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A flap-expanding tooling for titanium alloy cylindrical products, characterized in that, The tooling includes a main body (9), which has an expansion flap (1) inside and multiple expansion flaps (1). A spindle (5) for fixing the expansion flap (1) is inserted into the inner side of the expansion flap (1). A screw (4) is inserted into the inner side of the spindle (5). Nuts (3) are symmetrically threaded onto the outside of the screw (4). A base plate (7) for supporting the spindle (5) is provided at the bottom of the expansion flap (1). A cover plate (2) for fixing the expansion flap (1) is snapped onto the top of the expansion flap (1). A machined part (8) is sleeved on the outside of the expansion flap (1).
2. The expansion valve tooling for a titanium alloy cylindrical product according to claim 1, characterized in that, The bottom of the base plate (7) is fixed with a pad (6) by screws.
3. The expansion valve tooling for a titanium alloy cylindrical product according to claim 1, characterized in that, The inner dimensions of the nut (3) match the outer dimensions of the screw (4).
4. The expansion valve tooling for a titanium alloy cylindrical product according to claim 1, characterized in that, The inner dimensions of the mandrel (5) match the outer dimensions of the screw (4).