Adjustable clamp suitable for precise clamping of turbine blade

Abstract

The utility model discloses an adjustable clamp suitable for precise clamping of turbine blades, and relates to the field of adjustable clamps. Comprising an equipment shell, a positioning groove is formed in the equipment shell, a positioning frustum is arranged at the positioning groove, a movable notch is formed in the side wall of the positioning frustum, a clamping mechanism is arranged on the positioning frustum and comprises a driving air cylinder arranged at the upper end of the positioning frustum, the output tail end of the driving air cylinder is connected with a positioning sleeve, and a reset spring is arranged in the positioning sleeve; a telescopic rod is movably installed in the positioning sleeve, a positioning clamping block is fixedly installed at the output tail end of the telescopic rod, a contact inclined face is arranged on the positioning clamping block, and a steering mechanism is arranged below the positioning frustum. According to the adjustable clamp suitable for precise clamping of the turbine blades, the clamping mechanism can fix the blades of different sizes, after the blades of different sizes are fixed, the blades can be driven to rotate through the steering mechanism, the positions of the blades are adjusted, and a user can conveniently machine the blades.

Description

Technical Field

[0001] The utility model relates to the field of adjustable jigs, and particularly relates to an adjustable jig suitable for precision clamping of steam turbine blades. Background Technique

[0002] A steam turbine, also known as a steam turbine engine, is a rotary power mechanical device that converts the thermal energy of steam into mechanical energy. The steam turbine accelerates high-temperature and high-pressure steam in the nozzle and sprays it onto the blades of the impeller, causing the rotor equipped with the blade row to rotate, thereby doing work externally. Specifically, the working medium is heated into saturated steam in the boiler and then heated into superheated steam through the superheater. After these superheated steams enter the steam turbine, they generate an impact force on the high-speed rotating turbine blades, driving the rotor to rotate, and then driving a generator or other devices to work through a mechanical transmission device.

[0003] During the production process of steam turbine impeller blades, fine machining is required on the blade edges. During the fine machining process, a jig is needed to fix the blades. The jigs in the existing technology cannot be adjusted according to the size of the blades, and their applicability is poor. Therefore, an adjustable jig suitable for precision clamping of steam turbine blades is proposed. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide an adjustable jig suitable for precision clamping of steam turbine blades, which can effectively solve the problems mentioned in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An adjustable jig suitable for precision clamping of steam turbine blades includes an equipment housing. Support feet are fixedly installed at the four corners of the bottom of the equipment housing. A positioning groove is provided on the equipment housing. A positioning frustum is provided at the positioning groove. An activity notch is provided on the side wall of the positioning frustum. A clamping mechanism is provided on the positioning frustum. The clamping mechanism includes a driving cylinder arranged at the upper end of the positioning frustum. The output end of the driving cylinder is connected with a positioning sleeve. A return spring is arranged in the positioning sleeve. A telescopic rod is movably installed in the positioning sleeve. The output end of the telescopic rod is fixedly installed with a positioning clamping block. A contact inclined surface is provided on the positioning clamping block. A steering mechanism is provided below the positioning frustum. The steering mechanism includes a servo motor fixed in the equipment housing and a rotating table movably installed in the positioning groove. The output end of the servo motor is fixedly installed with a driving gear. A driving shaft is fixedly installed at the bottom of the rotating table. A reduction gear is fixedly installed on the driving shaft, and the reduction gear can drive the driving shaft to rotate.

[0007] Furthermore, the clamping mechanism further includes a connecting seat fixed to the lower end of the driving cylinder. The positioning sleeve is installed at the lower end of the driving cylinder through the connecting seat, and the driving cylinder can drive the connecting seat to move downward.

[0008] Furthermore, a through hole is provided at the upper end of the positioning frustum, and the output end of the driving cylinder extends into the positioning frustum through the through hole.

[0009] Furthermore, the telescopic rod is movably installed in the equipment housing through the positioning sleeve. One end of the return spring is connected to the bottom of the positioning sleeve, and the other end of the return spring is connected to the telescopic rod. The positioning clamping block extends out of the positioning frustum through the movable notch. The return spring can provide elastic force for the telescopic rod, making it tend to move outward from the positioning sleeve.

[0010] Furthermore, the steering mechanism further includes a bearing provided on the drive shaft and a rotating slip ring fixed to the outside of the rotating table.

[0011] Furthermore, the driving gear is movably installed on one side of the reduction gear through a servo motor, and the driving gear meshes with the reduction gear. The driving motor can drive the driving gear to rotate.

[0012] Furthermore, the drive shaft is movably installed in the equipment housing through a bearing. The rotating table is movably installed in the positioning groove through the rotating slip ring. The positioning frustum is movably installed above the positioning frustum through the rotating table. The driving gear can drive the reduction gear to rotate.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] 1. The driving cylinder can drive the positioning clamping block to move downward. After the positioning clamping block moves downward, it will fix the impeller on the positioning frustum. After the impeller is fixed on the positioning frustum, fine machining can be performed on the blades on the outside of the impeller. And during the up and down movement of the positioning clamping block, the contact inclined surface will always adhere to one side of the inner wall of the positioning frustum, enabling the positioning clamping block to expand and contract according to the gradient change of the positioning frustum, and keeping the positioning clamping block always in the movable notch on the positioning frustum, which is convenient for fixing blades of different sizes.

[0015] 2. The servo motor can drive the drive shaft to rotate. After the drive shaft rotates, it will drive the rotating table to rotate. After the rotating table rotates, it will drive the blades on the positioning frustum to rotate, so that the blades in all directions are rotated to the working position, which is convenient for the user to process the blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2It is a partial structural schematic diagram of the present utility model;

[0018] Figure 3 It is a schematic diagram of the clamping mechanism of the present utility model;

[0019] Figure 4 It is a schematic diagram of the steering mechanism of the present utility model.

[0020] In the figure: 1, positioning frustum; 2, equipment shell; 3, positioning groove; 4, support foot; 5, movable notch; 6, clamping mechanism; 601, driving cylinder; 602, connecting seat; 603, positioning sleeve; 604, positioning clamp block; 605, contact inclined surface; 606, return spring; 607, telescopic rod; 7, steering mechanism; 701, rotating table; 702, rotating slip ring; 703, driving gear; 704, servo motor; 705, bearing; 706, driving shaft; 707, reduction gear. Specific embodiments

[0021] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] As Figure 1 Figure 2 Shown in the figure, an adjustable fixture suitable for precision clamping of steam turbine blades includes an equipment shell 2. Support feet 4 are fixedly installed at the four corners of the bottom of the equipment shell 2. A positioning groove 3 is opened on the equipment shell 2. A positioning frustum 1 is provided at the positioning groove 3. A movable notch 5 is opened on the side wall of the positioning frustum 1. A clamping mechanism 6 is provided on the positioning frustum 1. The clamping mechanism 6 includes a driving cylinder 601 arranged at the upper end of the positioning frustum 1. The output end of the driving cylinder 601 is connected with a positioning sleeve 603. A return spring 606 is arranged in the positioning sleeve 603. A telescopic rod 607 is movably installed in the positioning sleeve 603. The output end of the telescopic rod 607 is fixedly installed with a positioning clamp block 604. A contact inclined surface 605 is provided on the positioning clamp block 604. A steering mechanism 7 is provided below the positioning frustum 1. The clamping mechanism 6 can fix blades of different sizes. After the blades of different sizes are fixed, the steering mechanism 7 can drive the blades to rotate to adjust the position of the blades, facilitating the user to process the blades.

[0023] As Figure 3As shown in the figure, a clamping mechanism 6 is provided on the positioning frustum 1. The clamping mechanism 6 includes a driving cylinder 601 provided at the upper end of the positioning frustum 1. The output end of the driving cylinder 601 is connected with a positioning sleeve 603. A return spring 606 is provided inside the positioning sleeve 603. A telescopic rod 607 is movably installed inside the positioning sleeve 603. The output end of the telescopic rod 607 is fixedly installed with a positioning clamp block 604. A contact inclined surface 605 is provided on the positioning clamp block 604. The clamping mechanism 6 further includes a connecting seat 602 fixed to the lower end of the driving cylinder 601. The positioning sleeve 603 is installed at the lower end of the driving cylinder 601 through the connecting seat 602.

[0024] Specifically, the driving cylinder 601 can drive the positioning clamp block 604 to move downward. After the positioning clamp block 604 moves downward, it will fix the impeller on the positioning frustum 1. After the impeller is fixed on the positioning frustum 1, the blades on the outer side of the impeller can be finely processed. And during the up and down movement of the positioning clamp block 604, the contact inclined surface 605 will always be attached to one side of the inner wall of the positioning frustum 1, so that the positioning clamp block 604 can expand and contract according to the gradient change of the positioning frustum 1, and make the positioning clamp block 604 always be in the movable notch 5 on the positioning frustum 1, which is convenient for fixing blades of different sizes.

[0025] As Figure 4 shown in the figure, the steering mechanism 7 includes a servo motor 704 fixed inside the equipment housing 2 and a rotating table 701 movably installed in the positioning groove 3. The output end of the servo motor 704 is fixedly installed with a driving gear 703. The bottom of the rotating table 701 is fixedly installed with a driving shaft 706. A reduction gear 707 is fixedly installed on the driving shaft 706. The steering mechanism 7 further includes a bearing 705 provided on the driving shaft 706 and a rotating slip ring 702 fixed outside the rotating table 701.

[0026] Specifically, the servo motor 704 can drive the driving shaft 706 to rotate. After the driving shaft 706 rotates, it will drive the rotating table 701 to rotate. After the rotating table 701 rotates, it will drive the blades on the positioning frustum 1 to rotate, so that the blades in all directions are rotated to the working position, which is convenient for the user to process the blades.

[0027] It should be noted that the present utility model is an adjustable fixture applicable to the precise clamping of steam turbine blades. In actual use, impellers of different sizes can be placed on the positioning conical platform 1. After the impellers of different sizes are placed on the positioning conical platform 1, the driving cylinder 601 can be started. After the driving cylinder 601 is started, it will drive the positioning clamping block 604 to move downward. After the positioning clamping block 604 moves downward, it will fix the impeller on the positioning conical platform 1. After the impeller is fixed on the positioning conical platform 1, finish machining can be carried out on the blades outside the impeller. And during the up and down movement of the positioning clamping block 604, the contact inclined surface 605 will always adhere to one side of the inner wall of the positioning conical platform 1, so that the positioning clamping block 604 can expand and contract according to the gradient change of the positioning conical platform 1, making the positioning clamping block 604 always located in the movable notch 5 on the positioning conical platform 1, facilitating the fixation of blades of different sizes. At the same time, the servo motor 704 can be started. After the servo motor 704 is started, it will drive the drive shaft 706 to rotate. After the drive shaft 706 rotates, it will drive the rotating table surface 701 to rotate. After the rotating table surface 701 rotates, it will drive the blades on the positioning conical platform 1 to rotate, adjusting the position of the blades, facilitating the user to process the blades.

[0028] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An adjustable clamp suitable for precision clamping of steam turbine blades, comprising a device housing (2), wherein support legs (4) are fixedly mounted at the four corners of the bottom of the device housing (2), and a positioning groove (3) is provided on the device housing (2), characterized in that: A positioning cone (1) is provided at the positioning groove (3), a movable notch (5) is provided on the side wall of the positioning cone (1), a clamping mechanism (6) is provided on the positioning cone (1), and the clamping mechanism (6) comprises a driving cylinder (601) arranged at the upper end of the positioning cone (1), the output end of the driving cylinder (601) is connected to a positioning sleeve (603), a return spring (606) is provided in the positioning sleeve (603), a telescopic rod (607) is movably installed in the positioning sleeve (603), and the output end of the telescopic rod (607) is fixedly installed with a A positioning clamp (604), wherein the positioning clamp (604) is provided with a contact inclined surface (605), and a steering mechanism (7) is provided below the positioning cone (1), wherein the steering mechanism (7) comprises a servo motor (704) fixed in the device housing (2) and a rotating table (701) movably installed in the positioning groove (3), wherein a driving gear (703) is fixedly installed at the output end of the servo motor (704), a driving shaft (706) is fixedly installed at the bottom of the rotating table (701), and a reduction gear (707) is fixedly installed on the driving shaft (706).

2. The adjustable fixture for precise clamping of steam turbine blades according to claim 1 is characterized in that: The clamping mechanism (6) further comprises a connecting seat (602) fixed to the lower end of the driving cylinder (601), and the positioning sleeve (603) is installed on the lower end of the driving cylinder (601) through the connecting seat (602).

3. The adjustable fixture for precise clamping of steam turbine blades according to claim 2 is characterized in that: A through hole is provided at the upper end of the positioning cone (1), and the output end of the driving cylinder (601) extends into the positioning cone (1) through the through hole.

4. The adjustable fixture for precise clamping of steam turbine blades according to claim 3 is characterized in that: The telescopic rod (607) is movably installed in the device housing (2) through the positioning sleeve (603), one end of the return spring (606) is connected to the bottom of the positioning sleeve (603), and the other end of the return spring (606) is connected to the telescopic rod (607), and the positioning clamp (604) extends out of the positioning cone (1) through the movable notch (5).

5. The adjustable clamp for precise clamping of steam turbine blades according to claim 4 is characterized in that: The steering mechanism (7) further comprises a bearing (705) arranged on the driving shaft (706) and a rotating slip ring (702) fixed on the outside of the rotating table (701).

6. The adjustable clamp for precise clamping of steam turbine blades according to claim 5 is characterized in that: The driving gear (703) is movably mounted on one side of the reduction gear (707) via a servo motor (704), and the driving gear (703) is meshed with the reduction gear (707).

7. The adjustable fixture for precise clamping of steam turbine blades according to claim 6 is characterized in that: The driving shaft (706) is movably mounted in the device housing (2) via a bearing (705); the rotating table (701) is movably mounted in the positioning groove (3) via a rotating slip ring (702); and the positioning cone (1) is movably mounted above the positioning cone (1) via the rotating table (701).

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