Warm upsetting forming die for 6Al6V2SnTi titanium alloy core rod

Abstract

The utility model discloses a warm upsetting forming die for a 6Al6V2SnTi titanium alloy core rod, and belongs to the technical field of titanium alloy profile machining, the warm upsetting forming die comprises a first driving device, a lower die and an upper die, a lower blind hole and an upper blind hole with adjustable lengths are formed in the lower die and the upper die respectively, in the warm upsetting forming process, the 6Al6V2SnTi titanium alloy core rod can be subjected to high-temperature-resistant molybdenum disulfide treatment, and the 6Al6V2SnTi titanium alloy core rod can be subjected to high-temperature-resistant molybdenum disulfide treatment. A molybdenum disulfide coating is formed on the surface of the 6Al6V2SnTi titanium alloy core rod, then after the 6Al6V2SnTi titanium alloy core rod is heated to 500-550 DEG C, preliminary forming of the special-shaped driving handle is conducted through an upper die and a lower die under the action of a first driving device, then the special-shaped driving handle is taken out and reheated, meanwhile, the length of an upper blind hole and the length of a lower blind hole are adjusted, and the special-shaped driving handle is obtained. According to the method, the machining efficiency is higher than that of a numerical milling machining method, 30-40 parts can be machined per minute, no waste is generated in the whole machining process, and the material utilization rate is close to 100%.

Description

TECHNICAL FIELD

[0001] The utility model belongs to titanium alloy section bar processing technical field, concretely relates to a 6Al6V2SnTi titanium alloy core pole's warm upsetting forming die. BACKGROUND

[0002] 6Al6V2SnTi is a kind of new α+β titanium alloy with higher strength, it has higher strength and deeper hardenability, and its excellent performance is applied in the machining of aerospace parts.

[0003] However, the plasticity of the new titanium alloy is poor, and cold upsetting forming cannot be carried out, wherein, 6Al6V2SnTi titanium alloy core pole is a kind of commonly used parts, the middle section of the core pole is provided with a special-shaped driving handle, and the main processing method currently adopted is numerical milling, however, the processing time of this processing method is long, material utilization is low, and the economy of processing is poor. UTILITY MODEL CONTENT

[0004] To solve the problems in the background art, the utility model provides a 6Al6V2SnTi titanium alloy core pole's warm upsetting forming die to solve the problems of long working hours, low material utilization and poor economy of processing when 6Al6V2SnTi titanium alloy core pole is processed by numerical milling.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A 6Al6V2SnTi titanium alloy core pole's warm upsetting forming die, comprising:

[0007] First driving device;

[0008] Lower die;The bottom end of lower die is fixedly arranged, the top end of lower die is provided with lower blind hole with adjustable length, the top end of lower blind hole is provided with cavity with the shape of the bottom end shape of the special-shaped driving handle of 6Al6V2SnTi titanium alloy core pole, and the first end of 6Al6V2SnTi titanium alloy core pole is arranged in lower blind hole;

[0009] Upper die;The bottom end of upper die is provided with upper blind hole with adjustable length, the top end of upper blind hole is provided with cavity with the shape of the top end shape of the special-shaped driving handle of 6Al6V2SnTi titanium alloy core pole, and the first end of 6Al6V2SnTi titanium alloy core pole is arranged in lower blind hole;

[0010] Preferably, the upper blind hole comprises:

[0011] The first end and the second end of the first through hole are arranged through the top end and the bottom end of the upper die respectively, the second end of the first through hole is a circular truncated cone end, and the small-diameter end of the circular truncated cone end of the first through hole is connected with the first end of the first through hole;

[0012] The first end of the first abutting rod is arranged in the first end of the first through hole, the second end of the first abutting rod is provided with a clamping block, the clamping block is arranged on the top surface of the upper die and connected with the driving end of the first driving device;

[0013] The first end of the first abutting rod is arranged in the first end of the first through hole, the second end of the first abutting rod is provided with a clamping block, the clamping block is arranged on the top surface of the upper die and connected with the driving end of the first driving device;

[0014] Preferably, the top end of the upper die is provided with a groove, the clamping block of the first abutting rod is arranged in the groove, and the driving end of the first driving device is connected with the top surface of the clamping block.

[0015] Preferably, the lower blind hole comprises:

[0016] The second driving device;

[0017] The first end and the second end of the first through hole are arranged through the top end and the bottom end of the upper die respectively, the second end of the first through hole is a circular truncated cone end, and the small-diameter end of the circular truncated cone end of the first through hole is connected with the first end of the first through hole;

[0018] The first end of the first abutting rod is arranged in the first end of the first through hole, the second end of the first abutting rod is provided with a clamping block, the clamping block is arranged on the top surface of the upper die and connected with the driving end of the first driving device;

[0019] Preferably, the core of the upper die and the core of the lower die are made of tungsten steel material.

[0020] Preferably, the tungsten steel material contains 8%-10% of cobalt.

[0021] Preferably, the wall thickness of the pipe of the diameter setting belt is 0.8-1mm.

[0022] Preferably, the included angle of the two generatrices of the axial section of the circular truncated cone end of the first through hole after being extended to intersect is 15°-16°.

[0023] Compared with the prior art, the utility model has the beneficial effects that:

[0024] This application features adjustable-length lower and upper blind holes. In the warm upsetting process, the 6Al6V2SnTi titanium alloy core rod is first treated with high-temperature molybdenum disulfide to form a high-temperature resistant molybdenum disulfide coating on its surface. Then, the portion of the 6Al6V2SnTi titanium alloy core rod where the irregularly shaped drive handle needs to be formed is heated to between 500°C and 550°C in a warm upsetting machine and sent to the warm upsetting mold of this application. Under the action of the first driving device, the upper and lower molds perform the initial forming of the irregularly shaped drive handle. The 6Al6V2SnTi titanium alloy core rod is then removed and reheated, while the lengths of the upper and lower blind holes are adjusted. Finally, the adjusted warm upsetting mold is used to continue the complete forming operation of the irregularly shaped drive handle of the 6Al6V2SnTi titanium alloy core rod.

[0025] The processing efficiency of this application is higher than that of CNC milling, and it can process 30-40 parts per minute. No waste is generated in the entire processing process, and the material utilization rate is close to 100%. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the specific structure of this application;

[0027] Figure 2 This is a schematic diagram of the specific structure of the frustum end of the first through hole;

[0028] Figure 3 A schematic diagram of the specific structure of the irregularly shaped drive handle with 6Al6V2SnTi titanium alloy core rod;

[0029] The diagram is marked as follows:

[0030] 1-Upper mold; 2-Lower mold; 3-Groove; 4-Clip block; 5-Tungsten steel material; 6-Second abutment; 7-First abutment; 8-Sizing belt; 9-6Al6V2SnTi titanium alloy core rod. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1

[0033] like Figure 1 As shown, a warm upsetting die for a 6Al6V2SnTi titanium alloy core rod includes:

[0034] The first driving device is a hydraulic machine or an electric machine.

[0035] The lower mold 2 is fixedly arranged at the bottom end, and a lower blind hole with adjustable length is arranged at the top end of the lower mold 2. A cavity with a shape of the bottom end of the special-shaped driving handle of the 6Al6V2SnTi titanium alloy core rod 9 is arranged at the top end of the lower blind hole, and the first end of the 6Al6V2SnTi titanium alloy core rod 9 is arranged in the lower blind hole.

[0036] The upper mold 1 is arranged at the bottom end of the upper mold 1, and an upper blind hole with adjustable length is arranged at the top end of the upper mold 1. A cavity with a shape of the top end of the special-shaped driving handle of the 6Al6V2SnTi titanium alloy core rod 9 is arranged at the top end of the upper blind hole. The upper blind hole is arranged opposite to the lower blind hole. The first driving device is used to drive the upper mold 1 to move towards the lower mold 2. The second end of the 6Al6V2SnTi titanium alloy core rod 9 enters the upper blind hole with the movement of the upper mold 1.

[0037] The lower blind hole and the upper blind hole with adjustable length are arranged. In the warm upsetting forming process, the 6Al6V2SnTi titanium alloy core rod 9 is first treated by high-temperature molybdenum disulfide to form a high-temperature-resistant molybdenum disulfide coating on the surface of the 6Al6V2SnTi titanium alloy core rod 9. Then, the part of the 6Al6V2SnTi titanium alloy core rod 9 that needs to form the special-shaped driving handle is heated to 500-550 DEG C in the warm upsetting machine, and then is sent to the warm upsetting forming mold. The preliminary forming of the special-shaped driving handle is performed by the upper mold 1 and the lower mold 2 under the action of the first driving device. Then, the 6Al6V2SnTi titanium alloy core rod 9 is taken out and reheated, and the length of the upper blind hole and the lower blind hole is adjusted. Then, the adjusted warm upsetting forming mold is used to continue the complete forming operation of the 6Al6V2SnTi titanium alloy core rod 9 as shown in the drawing. Figure 3 The complete forming operation of the 6Al6V2SnTi titanium alloy core rod 9 is shown in the drawing.

[0038] The forming operation is divided into two stages of preliminary forming and complete forming of the special-shaped driving handle, which can avoid cracks in one-step forming of the 6Al6V2SnTi titanium alloy core rod 9.

[0039] The processing efficiency of the application is higher than that of the milling method. 30-40 parts can be processed per minute, and no waste is generated in the whole processing process. The utilization rate of materials is close to 100%.

[0040] Example 2

[0041] The difference between this embodiment and example 1 is that, as shown in the drawing, the upper blind hole includes: Figure 1 , Figure 2 The upper blind hole includes:

[0042] First through hole: The first end and the second end of the first through hole are respectively set through the top and bottom ends of the upper mold 1. The second end of the first through hole is a frustum end, and the small diameter end of the frustum end of the first through hole is connected to the first end of the first through hole.

[0043] First abutment 7; the first end of the first abutment 7 is disposed in the first end of the first through hole, and the second end of the first abutment 7 is provided with a locking block 4, which is disposed on the top surface of the upper mold 1 and connected to the driving end of the first driving device;

[0044] Sizing belt 8; Sizing belt 8 is a tubular structure with an oblong cross-section at the opening. The first end of sizing belt 8 is fixedly connected to the first end of the first abutment 7. The second end of sizing belt 8 is provided with a V-shaped notch and is connected to the small-diameter end of the frustum of the first through hole.

[0045] In this embodiment, the sizing belt 8 can reduce the contact between the material and the cavity while plasticizing, thereby reducing friction and making the molding process more favorable. When it is necessary to adjust the length of the upper blind hole, the first abutment 7 of different lengths can be used for replacement.

[0046] Example 3

[0047] The difference between this embodiment and Embodiment 2 is that, as Figure 1 As shown, the top of the upper mold 1 is provided with a groove 3, the locking block 4 of the first abutment 7 is disposed in the groove 3, and the driving end of the first driving device is connected to the top surface of the locking block 4.

[0048] Example 4

[0049] The difference between this embodiment and Embodiment 1 is that, as Figure 1 As shown, the lower blind hole includes:

[0050] The second drive unit; the second drive unit is either a hydraulic press or an electric motor;

[0051] The second through hole; the first end and the second end of the second through hole are respectively set through the top and bottom ends of the lower mold 2. The first end of the second through hole is a frustum end, and the small diameter end of the frustum end of the second through hole is connected to the second end of the second through hole.

[0052] The second abutment 6; the first end of the second abutment 6 is disposed inside the second end of the second through hole, and the second end of the second abutment 6 is disposed outside the bottom end of the lower mold 2 and connected to the driving end of the second driving device.

[0053] In this embodiment, the bottom end of the lower mold 2 is fixedly set, and the second end of the second abutment 6 is connected to the driving end of the second driving device. During the molding process, the driving end of the second driving device does not move. After the molding is completed, the second driving device drives the second abutment 6 to move towards the first end of the second through hole to eject the 6Al6V2SnTi titanium alloy core rod 9 after molding, so that the operator can easily pick it up.

[0054] Example 5

[0055] The difference between this embodiment and Embodiment 1 is that, as Figure 1 , Figure 2 As shown, the mold cores of both the upper mold 1 and the lower mold 2 are made of tungsten steel material 5.

[0056] Example 6

[0057] The difference between this embodiment and embodiment 5 is that the cobalt content of the tungsten steel material 5 is 8%-10%.

[0058] Example 7

[0059] The difference between this embodiment and embodiment 2 is that the wall thickness of the sizing band 8 is 0.8-1mm.

[0060] Example 8

[0061] The difference between this embodiment and Embodiment 2 is that, as Figure 3 As shown, the angle α between the two generatrices of the extended frustum end section of the first through hole is 15°-16°.

[0062] 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 warm-up heading die for a 6Al6V2SnTi titanium alloy core rod, characterized by, The utility model relates to a kind of titanium alloy core rod and its manufacturing method, including: First driving device; Lower mould (2);The bottom end of lower mould (2) is fixedly arranged, the top end of lower mould (2) is equipped with the type cavity of the bottom end shape of the shape of 6Al6V2SnTi titanium alloy core rod (9) special-shaped driving handle, the first end of 6Al6V2SnTi titanium alloy core rod (9) is arranged in lower blind hole; Upper mould (1);Upper mould (1) bottom end is equipped with the type cavity of the top end shape of the shape of 6Al6V2SnTi titanium alloy core rod (9) special-shaped driving handle, upper blind hole is oppositely arranged with lower blind hole, first driving device is used to drive upper mould (1) to lower mould (2) moves, the second end of 6Al6V2SnTi titanium alloy core rod (9) enters upper blind hole with the movement of upper mould (1).

2. A warm-up heading die for a 6Al6V2SnTi titanium alloy core rod according to claim 1, characterized in that, Upper blind hole includes: First through hole: the first end and the second end of first through hole are respectively arranged through the top end and the bottom end of upper mould (1), the second end of first through hole is circular truncated cone end, the small diameter end of the circular truncated cone end of first through hole is connected with the first end of first through hole; First abutment rod (7);The first end of first abututment rod (7) is arranged in the first end of first through hole, the second end of first abutment rod (7) is equipped with clamping block (4), clamping block (4) is arranged on the top surface of upper mould (1) and is connected with the driving end of first driving device; Sizing band (8);Sizing band (8) is tubular structure, the pipe opening section of sizing band (8) is long circle, the first end of sizing band (8) is fixedly connected with the first end of first abutment rod (7), the second end of sizing band (8) is equipped with V-shaped gap, the second end of sizing band (8) is connected with the small diameter end of the circular truncated cone end of first through hole.

3. A warm-up heading die for a 6Al6V2SnTi titanium alloy core rod according to claim 2, characterized in that, The top end of upper mould (1) is equipped with recess (3), the clamping block (4) of first abutment rod (7) is arranged in recess (3), and the driving end of first driving device is connected with the top surface of clamping block (4).

4. A warm-up heading die for a 6Al6V2SnTi titanium alloy core rod according to claim 1, characterized in that, Lower blind hole includes: Second driving device; Second through hole: the first end and the second end of second through hole are respectively arranged through the top end and the bottom end of lower mould (2), the first end of second through hole is circular truncated cone end, and the small diameter end of the circular truncated cone end of second through hole is connected with the second end of second through hole; Second abutment rod (6);The first end of second abutment rod (6) is arranged in the second end of second through hole, and the second end of second abutment rod (6) is arranged outside the bottom end of lower mould (2) and is connected with the driving end of second driving device.

5. A warm-up heading die for a 6Al6V2SnTi titanium alloy core rod according to claim 1, characterized in that, The mould core of upper mould (1) and lower mould (2) is made of tungsten steel material (5).

6. A warm-up heading die for a 6Al6V2SnTi titanium alloy core rod according to claim 5, characterized in that, The cobalt content of tungsten steel material (5) is 8%-10%.

7. A warm-up heading die for a 6Al6V2SnTi titanium alloy core rod according to claim 2, characterized in that, The pipe wall thickness of sizing band (8) is 0.8-1mm.

8. A warm-up heading die for a 6Al6V2SnTi titanium alloy core rod according to claim 2, characterized in that, The included angle of the intersection of the two generatrices of the circular truncated cone end axial section of first through hole after extension is 15°-16°.

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