CN220591326U - Main shaft system of tubular part hot spinning machine - Google Patents
Main shaft system of tubular part hot spinning machine Download PDFInfo
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- CN220591326U CN220591326U CN202322287783.3U CN202322287783U CN220591326U CN 220591326 U CN220591326 U CN 220591326U CN 202322287783 U CN202322287783 U CN 202322287783U CN 220591326 U CN220591326 U CN 220591326U
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- main shaft
- fixing shaft
- die fixing
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- 238000009987 spinning Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000009826 distribution Methods 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 238000010791 quenching Methods 0.000 claims description 13
- 230000000171 quenching effect Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000498 cooling water Substances 0.000 abstract description 10
- 239000002184 metal Substances 0.000 description 9
- 125000006850 spacer group Chemical group 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 210000004907 gland Anatomy 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The main shaft system of the tubular part hot spinning machine comprises a hollow main shaft, a box body and a driven belt wheel, wherein a core mould fixing shaft, a material returning part, a piston and a gas distributing part are arranged in the main shaft, a shaft end baffle is arranged at the front end of the core mould fixing shaft, the piston and the main shaft form a cylinder, the piston is arranged at the front part of the core mould fixing shaft and contacted with the material returning part, the gas distributing part is arranged at the rear end of the main shaft, and a core mould fixing shaft supporting part is arranged between the gas distributing part and the core mould fixing shaft and corresponds to the rear port of the main shaft; the core die fixing shaft is a hollow shaft and is internally provided with a cooling pipe, a core die is arranged at one end of the core die fixing shaft, and the interior of the cooling pipe is communicated with a gap between the cooling pipe and the core die fixing shaft through a core die inner cavity. The main shaft device can be effectively cooled through the cooling water pipe, the control of the piston and the material returning piece is completed through the air distribution piece, so that the piston is pushed to complete material returning of a workpiece, the core die fixing shaft is subjected to multi-point fixing, and the rigidity of the core die fixing shaft is greatly improved.
Description
Technical Field
The utility model relates to the technical field of spinning machines, in particular to a main shaft system of a tubular part hot spinning machine.
Background
Metal spinning is a metal plastic forming process, which can relatively easily manufacture various rotationally symmetrical thin-walled gyrorotor and various pipe fittings, and is therefore also called a rotational forming process. The metal spinning process has the advantages of raw material saving, low cost, high product quality and the like, thus playing an increasing role in national defense, machinery, chemical industry, metallurgy and the like, and particularly being well applied to the manufacturing of related parts such as rockets, missiles and the like.
The principle of the metal spinning process is that a processed metal blank is sleeved on a core mould, and rotates together with the core mould along with a main shaft, a spinning wheel moves along the core mould, and under the action of the spinning wheel, the metal is processed into a required hollow revolving body workpiece point by utilizing the plasticity of the metal.
With the continuous expansion of the spinning technology and the requirements of different metal forming, a hot spinning forming process is further adopted for the metal which is difficult to form on the basis of a forming process mainly comprising cold spinning. In the hot spinning process, the temperature often reaches above the material phase transition temperature, and the main shaft system is closely contacted with a workpiece and needs to bear high temperature, which often causes problems of insufficient rigidity of the main shaft, oil leakage and the like, thereby influencing the processing precision. In addition, during the hot spinning of the tubular member, material withdrawal is difficult due to expansion of the core die by heat.
Disclosure of Invention
In order to overcome the problems in the prior art, the utility model provides a main shaft system of a tubular part hot spinning machine.
The technical scheme adopted by the utility model is as follows: the utility model provides a tubular part hot spinning main shaft system, includes main shaft, box, the main shaft rotates to install in the box, installs driven pulley at main shaft rear portion, and its special character is: the main shaft is a hollow shaft, a core die fixing shaft, a piston and an air distribution member are arranged in the main shaft, the core die fixing shaft, the piston and the main shaft form an air cylinder, the core die fixing shaft, the piston and the main shaft are coaxial, the piston is arranged at the front part of the core die fixing shaft and is positioned at the rear end through an inner side shaft shoulder arranged on the inner wall of the main shaft, the front end of the piston is contacted with a material returning member sleeved on the core die fixing shaft, a shaft end baffle is arranged between the front end of the core die fixing shaft and a corresponding front end port of the main shaft, the air distribution member is arranged at the rear end of the main shaft, radial holes communicated with an inner cavity of the main shaft are formed in the air distribution member and the main shaft, a core die fixing shaft supporting member is arranged between the air distribution member and the core die fixing shaft and corresponds to the rear end port of the main shaft, and the material returning member and the core die fixing shaft supporting member form multi-point supporting on the core die fixing shaft; the core die fixing shaft is a hollow shaft and is internally provided with a cooling pipe, a core die is arranged at one end of the core die fixing shaft, and the interior of the cooling pipe is communicated with a gap between the cooling pipe and the core die fixing shaft through a core die inner cavity.
Further, the mandrel fixing shaft supporting piece comprises a mandrel fixing shaft clamping plate and a fixing rib plate positioned in the rear end port of the main shaft, a groove is formed in the mandrel fixing shaft corresponding to the mandrel fixing shaft clamping plate, and the mandrel fixing shaft clamping plate is embedded with the groove on the mandrel fixing shaft and abuts against the right end face of the mandrel fixing shaft and is connected with the fixing rib plate through a bolt.
Further, a sealing quenching sleeve is arranged between the air distribution piece and the main shaft, and the sealing quenching sleeve is provided with a radial hole of the quenching sleeve, which corresponds to and is communicated with the radial hole of the main shaft.
Further, a rotary Griley ring for the shaft is arranged between the gas distribution piece and the seal quenching sleeve.
Further, sealing rings are respectively arranged between the piston and the core die fixing shaft and between the air distribution piece and the core die fixing shaft.
Further, the air distribution piece is connected with the main shaft through a screw.
Further, the driven pulley is connected with the main shaft through a key.
The utility model has the following effects: the cooling water pipe is arranged in the mandrel fixing shaft, so that the spindle device can be effectively cooled, and particularly the mandrel fixing shaft and the mandrel which are most severely heated can be cooled. The cylinder is arranged between the mandrel fixing shaft and the main shaft, and the control of the piston and the material returning piece is completed through the air distribution piece and the air charging valve, so that the piston is pushed to complete material returning of a workpiece. In addition, because the mandrel fixing shaft is a main stress structure, the rigidity of the mandrel fixing shaft is very important, and the mandrel fixing shaft has the advantages of greatly improving the rigidity of the mandrel fixing shaft and having an important effect on improving the machining precision of workpieces through the multi-point fixing effect of the shaft end baffle, the piston, the material returning piece and the mandrel fixing shaft supporting piece.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is an enlarged view of a portion a of fig. 1.
Fig. 3 is a schematic structural view of a mandrel fixing shaft and a mandrel.
In the figure, the box body comprises a 1-box body, a 2-angular contact ball bearing, a 3-main shaft, a 4-shaft end baffle, a 5-material returning piece, a 6-oil seal, a 7-front bearing gland, an 8-bearing inner spacer, a 9-bearing outer spacer, a 10-piston, an 11-bearing spacer, a 12-17-round nut stop washer, a 13-inner ring non-flange double-row cylindrical roller bearing, a 14-rear bearing gland, a 15-rear bearing spacer, a 16-driven belt pulley, a 18-cooling water pipe, a 19-shaft rotating Gelai ring, a 20-sealing quenching sleeve, a 21-core die fixing shaft clamping plate, a 22-air distributing piece, 23, 25-locking nuts, a 24-core die fixing shaft, a 26-fixing rib plate, a 27-core die, a 28-radial hole, a 29-quenching sleeve radial hole, a 30-sealing ring and a 241-groove.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present utility model are within the protection scope of the present utility model.
As shown in the figure, the spindle 3 is connected with the box 1 through the front bearing cover 7 and the rear bearing cover 14, the front bearing cover 7 and the bearing cover 14 are respectively fixed on the box through bolts, wherein the box 1 is fixed with the ground, a front side shaft shoulder and a front side shoulder are respectively arranged at the position, corresponding to the front bearing cover 7, on the spindle 3 and the box 1 from front to back, a rear side shaft shoulder and a rear side shoulder are respectively arranged at the position, corresponding to the rear bearing cover 14, on the spindle 3 and the box 1, respectively, the spindle 3 realizes rotation through an angular contact ball bearing 2 arranged between the front side shaft shoulder and the front side shoulder and an inner-side non-retainer ring double-row cylindrical roller bearing 13 arranged on the rear side shaft shoulder and the rear side shoulder, an inner ring of the angular contact ball bearing 2 and the inner-side non-retainer ring double-row cylindrical roller bearing 13 are contacted with the spindle 3, an outer ring is contacted with the box 1, two angular contact ball bearings 2 are arranged on one side of the spindle 1 in a back-to-back manner and pass through the front bearing cover 7, and an oil seal 6 is arranged between the front bearing cover 7 and the spindle 3. The two angular contact ball bearings 2 are separated by a bearing inner spacer 8 and a bearing outer spacer 9 which are sleeved on the main shaft 3, the angular contact ball bearings 2 are positioned by a front shaft shoulder of the main shaft and are fixed by a bearing spacer 11, a round nut stop washer 12 and a lock nut 25 which are sleeved on the main shaft 3, the other end of the main shaft is supported by an inner-side non-retainer double-row cylindrical roller bearing 13, one end of the inner-side non-retainer double-row cylindrical roller bearing 13 is positioned by the rear shaft shoulder and the rear side shoulder, and the other end of the inner-side non-retainer double-row cylindrical roller bearing is fixed by a rear bearing gland 14 and a rear bearing spacer 15 which is arranged on the main shaft 3. One end of the rear bearing spacer 15 is used for fixing the inner-edge non-retainer double-row cylindrical roller bearing 13, and the other end is used for completing the positioning of the driven belt pulley 16 connected to the main shaft 3 through a key. The driven pulley 16 is fixed by a round nut lock washer 17 and a lock nut 23. The main shaft 3 is a hollow shaft, a piston 10, a material returning part 5 and a core die fixing shaft 24 which are coaxial with the main shaft 3 are arranged in the main shaft, the piston 10 is positioned through an inner shaft shoulder arranged on the inner wall of the main shaft 3, the other end of the piston 10 is contacted with the material returning part 5, the piston 10 and the material returning part 5 are both arranged at one end of the core die fixing shaft 24, the core die fixing shaft 24 penetrates through the main shaft 3 along the axial line direction, a shaft end baffle 4 is arranged between one end of the core die fixing shaft 24 and the front end of the corresponding main shaft 3 through screws, a groove 241 is arranged at the other end of the core die fixing shaft 24, the core die fixing shaft clamping plate 21 is in a split structure and is embedded with the groove 241 on the core die fixing shaft 24, the core die fixing shaft clamping plate 21 is propped against the right end face of the core die fixing shaft and is connected with a fixed rib 26 positioned at the rear end of the main shaft through bolts, an air distributing part 22 is arranged outside the air distributing part 22 is arranged on the main shaft 3 through screws, a seal quenching sleeve 20 is arranged between the air distributing part 22 and the main shaft 3, a rotating grid (sealing ring) 19 for a shaft is arranged between the air distributing part 22 and the seal quenching sleeve 20, radial holes 28 are arranged on the main shaft 3, radial holes 28 are correspondingly and communicated with each other, and are arranged on the main shaft quenching sleeve 28. The core mold fixing shaft 24 has a hollow structure, the cooling water pipe 18 is installed in the core mold fixing shaft 24, and the core mold 27 is installed at the end of the core mold fixing shaft 24.
In operation, the driven pulley 16 is driven by the motor, thereby driving the entire spindle system to rotate. The main shaft 3, the piston 10 and the mandrel fixing shaft 24 form a sealed cylinder, and the gas delivery is completed through the gas distribution piece 22 and a gas charging valve (omitted in the figure), so that the movement of the material returning piece 5 is controlled, and the material returning function is realized.
The piston 10, the material returning piece 5, the core die fixing shaft clamping plate 21, the fixing rib plates 26 and the air distribution piece 22 provide support for the core die fixing shaft 24, so that the rigidity of the core die fixing shaft 24 is improved, the stability in working is further improved, and the processing quality of a workpiece is improved.
The cooling water pipe 18 arranged in the mandrel fixing shaft 24 is a stainless steel pipe, the cooling water flows in through the cooling water pipe 18, flows out from a gap between the cooling water pipe 18 and the mandrel fixing shaft 24 after entering the inner cavity of the mandrel 27, and completes cooling of the mandrel 27 and the mandrel fixing shaft 24.
The specific implementation process comprises the following steps: first, the pipe fitting is pushed onto the mandrel 27 by the feeding mechanism, the pipe fitting is heated above the material phase transition point by electromagnetic heating, and the driven pulley 16 is rotated to feed for finishing spinning. The cylinder is then inflated by the air distribution member 22 to complete the material withdrawal, and when the next tube is fed, the valve is opened and the tube will press the material withdrawal member back to the original position. In addition, during the whole processing, the cooling water enters the cooling water pipe 18 through the rotary joint and flows out from the gap between the mandrel fixing shaft 24 and the spindle 3, thereby completing the cooling of the spindle system.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate technical solution, and this description is for clarity only, and those skilled in the art should consider the disclosure as a whole, and the technical solutions in the embodiments may be combined appropriately to form other ways that will be understood by those skilled in the art.
Claims (7)
1. The utility model provides a tubular part hot spinning machine main shaft system, includes main shaft, box, the main shaft rotates and installs in the box, installs driven pulley, characterized by at main shaft rear portion: the main shaft is a hollow shaft, a core die fixing shaft which is coaxial with the main shaft, a piston and an air distribution member are arranged in the main shaft, the core die fixing shaft, the piston and the main shaft form an air cylinder, the piston is arranged at the front part of the core die fixing shaft and is positioned at the rear end through an inner side shaft shoulder arranged on the inner wall of the main shaft, the front end of the piston is contacted with a material returning member sleeved on the core die fixing shaft, a shaft end baffle is arranged between the front end of the core die fixing shaft and a corresponding front end port of the main shaft, the air distribution member is arranged at the rear end of the main shaft, radial holes communicated with an inner cavity of the main shaft are formed in the air distribution member and the main shaft, a core die fixing shaft supporting member is arranged between the air distribution member and the core die fixing shaft and corresponds to the rear end port of the main shaft, and the shaft end baffle, the piston and the core die fixing shaft supporting member form multi-point supporting on the core die fixing shaft; the core die fixing shaft is a hollow shaft and is internally provided with a cooling pipe, a core die is arranged at one end of the core die fixing shaft, and the interior of the cooling pipe is communicated with a gap between the cooling pipe and the core die fixing shaft through a core die inner cavity.
2. The tubular part hot spinning machine spindle system according to claim 1, characterized in that: the core die fixing shaft supporting piece comprises a core die fixing shaft clamping plate and a fixing rib plate positioned in the rear end port of the main shaft, a groove is formed in the core die fixing shaft corresponding to the position of the core die fixing shaft clamping plate, and the core die fixing shaft clamping plate is embedded with the groove on the core die fixing shaft and abuts against the right end face of the core die fixing shaft and is connected with the fixing rib plate through a bolt.
3. The tubular part hot spinning machine spindle system according to claim 1, characterized in that: and a sealing quenching sleeve is arranged between the air distribution piece and the main shaft, and a quenching sleeve radial hole which corresponds to and is communicated with the radial hole is arranged on the sealing quenching sleeve.
4. A tubular part hot spinning machine spindle system according to claim 3, characterized in that: and a rotary Grignard ring for the shaft is arranged between the gas distribution piece and the seal quenching sleeve.
5. The tubular part hot spinning machine spindle system according to claim 1, characterized in that: a sealing ring is respectively arranged between the piston and the core die fixing shaft and between the air distribution piece and the core die fixing shaft.
6. The tubular part hot spinning machine spindle system according to claim 1, characterized in that: the air distribution piece is connected with the main shaft through a screw.
7. The tubular part hot spinning machine spindle system according to claim 1, characterized in that: the driven belt wheel is connected with the main shaft through a key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322287783.3U CN220591326U (en) | 2023-08-24 | 2023-08-24 | Main shaft system of tubular part hot spinning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322287783.3U CN220591326U (en) | 2023-08-24 | 2023-08-24 | Main shaft system of tubular part hot spinning machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220591326U true CN220591326U (en) | 2024-03-15 |
Family
ID=90171444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322287783.3U Active CN220591326U (en) | 2023-08-24 | 2023-08-24 | Main shaft system of tubular part hot spinning machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220591326U (en) |
-
2023
- 2023-08-24 CN CN202322287783.3U patent/CN220591326U/en active Active
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