Anti-sputtering steam turbine machining milling machine

Abstract

The utility model relates to the technical field of machining milling machines for turbine blade roots, and discloses an anti-sputtering turbine machining milling machine which comprises a working table, the top of the working table is connected with a milling machine set, the top of the working table is connected with a bearing base and a limiting mechanism, the limiting mechanism is installed on the top of the bearing base, and the limiting mechanism comprises a two-way lead screw. A motor is connected to the front face of the bidirectional lead screw, nuts are connected to the front face and the back face of the exterior of the bidirectional lead screw in a threaded mode, transverse plates are fixedly connected to the opposite ends of the two nuts, teeth are connected to the opposite ends of the two transverse plates, and inclined rods are connected to the right sides of the teeth through hinges. According to the anti-sputtering steam turbine machining milling machine, the phenomenon that a blade root is not firmly fixed during machining, then the phenomenon of tool shaking is avoided, and the machining speed is affected is avoided, when the blade root is fixed through the limiting mechanism, the blade root is automatically shielded and protected, and waste chip spraying is avoided during machining of the blade root.

Description

Technical Field

[0001] The utility model relates to the technical field of milling machines for processing steam turbine blade roots, in particular to a sputtering-proof steam turbine milling machine. Background Art

[0002] A steam turbine is a rotary steam-powered device. High-temperature and high-pressure steam passes through a fixed nozzle and becomes an accelerated airflow, which is then sprayed onto the blades, causing the rotor equipped with the blade rows to rotate and perform work externally. The moving blades are one of the key components of a steam turbine. The moving blades generally consist of three parts: the blade shape, the blade root and the blade top. The blade root usually requires the use of a milling machine for processing.

[0003] Because of the unique sawtooth shape of the blade root, the three-jaw chuck in the existing milling machine is unable to stably fix the blade root, which may cause the blade root to vibrate when being processed by the milling machine, affecting the processing speed. At the same time, the blade root may splash waste chips when being processed, causing harm and pollution to the user's body and the construction environment. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a sputtering-proof steam turbine machining milling machine to solve the above-mentioned technical problems.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a sputtering-proof steam turbine machining milling machine, comprising:

[0008] A workbench, the top of which is connected to a milling machine group, and the top of which is connected to a load-bearing seat.

[0009] A limiting mechanism is installed on the top of the load-bearing seat, and the limiting mechanism includes a bidirectional screw rod, the front side of the bidirectional screw rod is connected to a motor, the front and back sides of the outside of the bidirectional screw rod are threadedly connected to nuts, the opposite ends of the two nuts are fixedly connected to cross plates, the opposite ends of the two cross plates are connected to teeth, the right side of the teeth is connected to an inclined rod through a hinge, the right side of the inclined rod is connected to a double-headed hinge, the right side of the double-headed hinge is connected to a block, and the bottom of the left side of the block is connected to a T-shaped arm.

[0010] The protection mechanism comprises a protection plate, the protection plate is installed inside the workbench, a pull rope is connected to the right side of the protection mechanism, and the pull rope is connected to the T-shaped arm through a guide wheel.

[0011] Preferably, guide blocks are fixedly connected to both sides of the bottom of the T-shaped arm, and the guide blocks are slidably connected to the workbench, and the guide blocks can guide the T-shaped arm and the block.

[0012] Preferably, the front and back sides of the bidirectional screw rod are both sleeved with spherical bearings, and the spherical bearings are connected to the load-bearing seat, so that the spherical bearings can support the bidirectional screw rod.

[0013] Preferably, a transverse groove is provided on the top of the load-bearing seat, and the transverse groove is slidably connected to the T-shaped arm, so that the transverse groove facilitates the transmission and guidance of the T-shaped arm.

[0014] Preferably, threads are provided on the front and back sides of the bidirectional screw rod, and the two threads have opposite rotation directions. The two threads with different rotation directions can drive the two nuts to move relative to each other when the bidirectional screw rod rotates.

[0015] Preferably, the outside of the protective plate is connected to the workbench, and the front and back sides of the protective plate are both transparent glass panels. The transparent protective plate facilitates observation of the blade root.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a sputter-proof steam turbine machining milling machine, which has the following beneficial effects:

[0018] 1. The anti-sputtering steam turbine milling machine uses a limit mechanism to match the sawtooth shape of the blade root before the blade root is processed to fix the blade root at three points, thereby avoiding the blade root being loosely fixed during processing, thereby avoiding the phenomenon of tool vibration and affecting the processing speed;

[0019] 2. The anti-sputtering steam turbine processing milling machine automatically shields and protects the blade root when the limiting mechanism fixes the blade root through the added protection mechanism, so as to avoid waste chips spraying from the blade root during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the top of the load-bearing seat of the utility model;

[0022] Figure 3 This is a top schematic diagram of the limiting mechanism of the utility model;

[0023] Figure 4 It is a top schematic diagram of the protective mechanism of the utility model.

[0024] In the figure: 1. workbench; 2. milling machine group; 3. load-bearing seat; 31. horizontal groove; 4. limit mechanism; 41. bidirectional screw; 411. spherical bearing; 42. motor; 43. nut; 44. horizontal plate; 45. teeth; 46. oblique rod; 47. double-head hinge; 48. block; 481. guide block; 49. T-arm; 5. protection mechanism; 51. protection plate; 52. pull rope; 53. guide wheel. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides a technical solution, a sputtering-proof steam turbine machining milling machine, comprising:

[0027] See also Figure 1 and Figure 2 , a workbench 1, the top of the workbench 1 is connected to a milling machine group 2, and this scheme is a structural improvement on the non-electronic component part based on the milling machine in the prior art, wherein the workbench 1 and the milling machine group 2 are common milling machine products that have been promoted in the prior art.

[0028] The top of the workbench 1 is connected to a load-bearing seat 3, and a transverse groove 31 can support the blade root. A transverse groove 31 is opened on the top of the load-bearing seat 3, and the transverse groove 31 is slidingly connected to the T-shaped arm 49. The transverse groove 31 facilitates the transmission of the T-shaped arm 49 and guides the T-shaped arm 49.

[0029] See also Figure 3 The limiting mechanism 4 is installed on the top of the load-bearing seat 3. The limiting mechanism 4 includes a bidirectional screw rod 41. The bidirectional screw rod 41 can transmit the power to the nut 43. The front and back sides of the bidirectional screw rod 41 are both provided with threads, and the rotation directions of the two threads are opposite. The two threads with different rotation directions can drive the two nuts 43 to move relative to each other when the bidirectional screw rod 41 rotates.

[0030] The front and back sides of the bidirectional screw rod 41 are both sleeved with spherical bearings 41, and the spherical bearings 411 are connected to the load-bearing seat 3. The spherical bearings 411 can support the bidirectional screw rod 41. The front side of the bidirectional screw rod 41 is connected to a motor 42, and the motor 42 can provide driving force for the bidirectional screw rod 41. The motor 42 is connected to the load-bearing seat 3.

[0031] The front and back sides of the outside of the bidirectional screw rod 41 are both threadedly connected with nuts 43, and the nuts 43 are transmitted through the bidirectional screw rod 41. The opposite ends of the two nuts 43 are fixedly connected with cross plates 44, and the bottom of the cross plates 44 is slidably connected to the top of the load-bearing seat 3, so that the cross plates 44 can guide the nuts 43 to prevent the nuts 43 from rotating during movement. The cross plates 44 can transmit the teeth 45. The opposite ends of the two cross plates 44 are connected with teeth 45, and the teeth 45 can fix the blade roots. The right side of the teeth 45 is connected with an inclined rod 46 through a hinge, and the inclined rod 46 can transmit to the block 48. The right side of the inclined rod 46 is connected with a double-headed hinge 47.

[0032] A block 48 is connected to the right side of the double-head hinge 47, and a T-shaped arm 49 is connected to the bottom of the left side of the block 48. The T-shaped arm 49 cooperates with the teeth 45 to fix the blade root at three points. Guide blocks 481 are fixedly connected to both sides of the bottom of the T-shaped arm 49. The guide block 481 is slidably connected to the workbench 1, and the guide block 481 can guide the T-shaped arm 49 and the block 48.

[0033] See also Figure 4 The protective mechanism 5 is installed inside the workbench 1. The protective mechanism 5 includes a protective plate 51. The protective plate 51 can block the waste chips generated by blade root processing. The outside of the protective plate 51 is connected to the workbench 1. The front and back sides of the protective plate 51 are both transparent glass panels. The transparent protective plate 51 facilitates observation of the blade root.

[0034] A pull rope 52 is connected to the right side of the protection plate 51, and the pull rope 52 can transmit power to the protection plate 51. The pull rope 52 is connected to the T-shaped arm 49 through a guide wheel 53, and the guide wheel 53 is connected to the load-bearing seat 3 through a seat bearing.

[0035] In this scheme, the blade root is first placed on the top of the load-bearing seat 3, so that the serrated end of the blade root is located between the two teeth 45, and the motor 42 is started to drive the bidirectional screw rod 41 to rotate, and then drive the two nuts 43 to move relative to each other, thereby driving the two cross plates 44 to move, and finally drive the teeth 45 to move. The blade root is locked by the serrated shape of the blade root. At the same time, when the nut 43 moves, it will also drive the double-headed hinge 47 to move, and then drive the block 48 to move, and finally drive the limit mechanism 4 to move, and fix the other end of the blade root. Before the blade root is processed, the limit mechanism 4 is used to cooperate with the serrated shape of the blade root to fix the blade root at three points, thereby avoiding the blade root from being loosely fixed during processing, thereby avoiding the phenomenon of tool vibration, and affecting the processing speed;

[0036] When the T-shaped arm 49 moves, it will pull the pull rope 52 to drive the protection plate 51 to rise, wrapping the outside of the load-bearing seat 3. Through the added protection mechanism 5, when the limiting mechanism 4 fixes the blade root, the blade root is automatically shielded and protected to avoid waste chips from being ejected during processing. After the blade root is completely fixed, the milling machine group 2 performs processing operations on the blade root.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sputter-proof steam turbine machining milling machine, characterized in that: include: A workbench (1), the top of which is connected to a milling machine group (2), and the top of which is connected to a load-bearing seat (3); A limiting mechanism (4) is installed on the top of the load-bearing seat (3), and the limiting mechanism (4) includes a bidirectional screw rod (41), the front of the bidirectional screw rod (41) is connected to a motor (42), the front and back of the outside of the bidirectional screw rod (41) are both threadedly connected to nuts (43), the opposite ends of the two nuts (43) are fixedly connected to a cross plate (44), the opposite ends of the two cross plates (44) are connected to teeth (45), the right side of the teeth (45) is connected to an inclined rod (46) through a hinge, the right side of the inclined rod (46) is connected to a double-headed hinge (47), the right side of the double-headed hinge (47) is connected to a block (48), and the bottom of the left side of the block (48) is connected to a T-shaped arm (49); A protection mechanism (5), the protection mechanism (5) comprising a protection plate (51), the protection plate (51) being installed inside the workbench (1), a pull rope (52) being connected to the right side of the protection mechanism (5), the pull rope (52) being connected to the T-shaped arm (49) via a guide wheel (53).

2. The anti-sputtering steam turbine machining milling machine according to claim 1, characterized in that: Both sides of the bottom of the T-shaped arm (49) are fixedly connected with guide blocks (481), and the guide blocks (481) are slidably connected to the workbench (1).

3. The anti-sputtering steam turbine machining milling machine according to claim 1, characterized in that: The front and back sides of the bidirectional screw rod (41) are both sleeved with spherical bearings (411), and the spherical bearings (411) are connected to the bearing seat (3).

4. The anti-sputtering steam turbine machining milling machine according to claim 1, characterized in that: A transverse groove (31) is provided on the top of the load-bearing seat (3), and the transverse groove (31) is slidably connected to the T-shaped arm (49).

5. The anti-sputtering steam turbine machining milling machine according to claim 1, characterized in that: The front and back sides of the bidirectional screw rod (41) are both provided with threads, and the rotation directions of the two threads are opposite.

6. The anti-sputtering steam turbine milling machine according to claim 1, characterized in that: The outside of the protection plate (51) is connected to the workbench (1) through the outside, and the front and back sides of the protection plate (51) are both transparent glass panels.

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