Positioning and clamping device for impeller machining

Abstract

The utility model discloses a positioning and clamping device for impeller machining, which relates to the technical field of impeller machining and comprises a base, a pore plate is fixedly mounted on the side surface of the base, a mounting unit and a positioning seat are fixedly mounted on the upper surface of the base, a clamping unit is fixedly mounted on the mounting unit, and a centering unit is fixedly mounted on the positioning seat. The device has the beneficial effects that an impeller can be synchronously clamped and fixed through the transmission assembly, the consistency of the clamping acting force on the impeller is guaranteed, the machining precision is improved, deformation caused by uneven clamping force can be reduced, the root of a blade is supported and fixed through a first ejector block, the acting force for clamping the blade is dispersed, and the machining efficiency is improved. And deformation caused by concentrated acting force is avoided, the back face of the lower end of the blade is supported and lifted through a second ejector block, the acting force during machining is offset, vibration force in the machining process is dispersed through a buffer assembly, deformation of the blade in the impeller machining process is prevented, and the impeller machining quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of impeller processing, in particular to an impeller processing positioning and clamping device. Background Art

[0002] The impeller consists of a base shaft and blades distributed radially along the periphery of the base shaft. The impeller needs to be clamped during processing. Clamping is to fix the workpiece in a predetermined position so that it will not move due to cutting force, inertia force, and gravity, thereby ensuring the normal operation of the machining.

[0003] After searching, the patent application with Chinese patent publication number CN221603872U discloses a gas turbine impeller processing positioning clamping device, which mainly solves the problems of poor protection and alarm effects of ordinary clamping devices through friction mechanism, pressure sensor and buzzer.

[0004] Comparing with the existing technologies in related fields, it can be seen that the existing clamping devices mostly clamp the roots of the impeller blades at a single point. The clamping force is concentrated, which can easily cause the blades to bend. In addition, during the processing, the processing force can easily cause displacement, affecting the quality of the impeller processing. Utility Model Content

[0005] The purpose of the utility model is to provide an impeller processing positioning clamping device in order to solve the above problems.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] An impeller machining positioning and clamping device comprises a base, a side surface of the base is fixedly mounted with an orifice plate, an upper surface of the base is fixedly mounted with a mounting unit and a positioning seat, the mounting unit is fixedly mounted with a clamping unit, and the positioning seat is fixedly mounted with a centering unit;

[0008] The clamping unit includes a supporting frame and a placing frame. The supporting frame is arranged and fixed on the mounting unit. A first movable rod is rotatably installed in the supporting frame. A support rod is rotatably installed on the upper end of the first movable rod. A first electric-controlled telescopic mechanism is rotatably installed on both sides of the support rod. The placing frame is rotatably connected to the telescopic end and the support rod of the first electric-controlled telescopic mechanism. A buffer assembly is fixedly installed on the end of the support rod and the placing frame. A first top block and a second top block are respectively installed on the buffer assembly. The first top block surrounds the centering unit. A transmission assembly is fixedly installed in the base, and the transmission assembly is slidably connected to the first movable rod.

[0009] Furthermore, the transmission assembly includes a motor, a bevel gear set and a screw. The motor is fixedly installed in the base, the bevel gear set is rotatably installed on the base, the bevel gear set is fixedly connected to the output shaft of the motor, the screw is rotatably installed in the support frame, a movable part is installed on the screw through threaded fitting, a driven bevel gear is fixedly installed on the end of the screw, the driven bevel gear is meshed and connected to the bevel gear set, and the movable part is slidably connected to the first movable rod.

[0010] Furthermore, the buffer assembly includes a disc spring group, which is fixedly mounted on the end of the support rod and the placement frame. A mounting frame is fixedly mounted on the disc spring group, and the mounting frame is fixedly connected to the first top block and the second top block by bolts.

[0011] Furthermore, the centering unit includes a second electrically-controlled telescopic mechanism and a second movable rod. The second electrically-controlled telescopic mechanism is fixedly installed in the positioning seat. A traction member is fixedly installed on the telescopic end of the second electrically-controlled telescopic mechanism. The traction member is slidably connected to the second movable rod. The second movable rod is rotatably arranged at the upper end of the positioning seat, and a support plate is rotatably installed at the end of the second movable rod.

[0012] Furthermore, pressure sensors and protective pads are fixedly mounted on the surfaces of the first top block, the second top block and the support plate, and the protective pads cover the pressure sensors.

[0013] Furthermore, the mounting unit includes an annular seat and a connecting seat. The annular seat is fixedly mounted on the upper surface of the base, the connecting seat is fixedly mounted on the support frame, the connecting seat is slidably connected to the annular seat, and the connecting seat is fixedly connected to the annular seat by bolts.

[0014] Furthermore, a scale is fixedly mounted on the upper surface of the base, and a pointer is fixedly mounted on the side of the connecting seat, and the pointer is located directly above the scale.

[0015] The beneficial effects compared with the prior art are as follows:

[0016] 1. The impeller can be clamped and fixed synchronously through the transmission component to ensure the consistency of the clamping force on the impeller, improve the processing accuracy, reduce the deviation, and reduce the deformation caused by uneven clamping force. The root of the blade is supported and fixed by the first top block, and the clamping force of the blade is dispersed to avoid deformation caused by concentrated force. The lower end back of the blade is supported and lifted by the second top block to offset the force during processing. The vibration force during processing is dispersed by the buffer component to prevent deformation of the blade during impeller processing and improve the quality of impeller processing.

[0017] 2. The outer side of the impeller base shaft is supported and positioned by the first top block, and the inner wall of the impeller base shaft mounting hole is supported in multiple directions simultaneously by the support plate driven by the second electrically controlled telescopic mechanism, the traction member, and the second movable rod. This can center the impeller base shafts of different sizes, improve the accuracy of impeller installation, and apply an oblique downward force through the impeller base shaft to effectively prevent the impeller from moving during machining, thereby improving the stability of the impeller during machining and ensuring the machining quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a first axonometric structural diagram of an impeller machining positioning and clamping device according to the utility model;

[0020] Figure 2 This is a kind of impeller processing positioning clamping device described in the utility model Figure 1 A in the middle is an enlarged structural diagram;

[0021] Figure 3 This is a kind of impeller processing positioning clamping device described in the utility model Figure 1 The enlarged structural diagram at B in the middle;

[0022] Figure 4 This is a kind of impeller processing positioning clamping device described in the utility model Figure 1 The enlarged structural diagram at C in the middle;

[0023] Figure 5 This is a kind of impeller processing positioning clamping device described in the utility model Figure 1 The enlarged structural diagram at D in the middle;

[0024] Figure 6 This is a schematic cross-sectional view of an impeller machining positioning and clamping device according to the present invention;

[0025] Figure 7 This is a kind of impeller processing positioning clamping device described in the utility model Figure 6 Enlarged structural diagram at E in the middle.

[0026] The following are the descriptions of the reference numerals:

[0027] 1. Base; 2. Positioning seat; 301. Motor; 302. Bevel gear assembly; 303. Screw rod; 304. Movable part; 305. First movable rod; 306. Support rod; 307. Disc spring assembly; 308. Mounting frame; 309. First top block; 310. First electrically controlled telescopic mechanism; 311. Placement frame; 312. Second top block; 313. Support frame; 314. Driven bevel gear; 401. Second electrically controlled telescopic mechanism; 402. Traction member; 403. Second movable rod; 404. Support plate; 5. Protective pad; 6. Pressure sensor; 7. Connecting seat; 8. Ring seat; 9. Ruler; 10. Pointer; 11. Orifice plate. DETAILED DESCRIPTION

[0028] like Figure 1-Figure 7 As shown, an impeller processing positioning and clamping device includes a base 1, a hole plate 11 is fixedly installed on the side of the base 1, a mounting unit and a positioning seat 2 are fixedly installed on the upper surface of the base 1, a clamping unit is fixedly installed on the mounting unit, and a centering unit is fixedly installed on the positioning seat 2. The base 1 is fixed by the hole plate 11 and bolts, and the impeller to be processed is placed on the positioning seat 2 so that the mounting hole on the impeller base shaft is sleeved on the centering unit. The impeller is positioned and supported by the centering unit. The number of clamping units is selected according to the number of blades of the impeller. The clamping units are fixed by the mounting units, and the base shaft and blades of the impeller are clamped and fixed by the clamping units, thereby improving the stability of the impeller clamping and fixing and ensuring the processing quality.

[0029] like Figures 1-4 、 Figure 6 、 Figure 7As shown, the clamping unit includes a support frame 313 and a placement frame 311. The support frame 313 is arranged and fixed on the installation unit. The first movable rod 305 is rotatably installed in the support frame 313. The upper end of the first movable rod 305 is rotatably installed with a support rod 306. The two sides of the support rod 306 are rotatably installed with a first electric-controlled telescopic mechanism 310. The placement frame 311 is rotatably connected to the telescopic end of the first electric-controlled telescopic mechanism 310 and the support rod 306. The end of the support rod 306 and the placement frame 311 are fixedly installed with a buffer assembly, and the buffer assembly is respectively installed with a first top block 309 The first top block 309 surrounds the centering unit, and a transmission component is fixedly installed in the base 1. The transmission component is slidably connected to the first movable rod 305. The first electrically controlled telescopic mechanism 310 works using existing technology. The first top block 309 and the second top block 312 are provided with curved surfaces that fit the blades. According to the number of impeller blades, a corresponding number of clamping units are selected and installed on the mounting unit. The impeller is placed on the positioning seat 2. When the impeller is placed, the impeller blades are located on both sides of the support frame 313. After the center is positioned by the centering unit, the impeller is positioned on both sides of the support frame 313. An electric telescopic mechanism 310 drives the placement frame 311 to move, adjusts the inclination angle of the placement frame 311, and the placement frame 311 drives the second top block 312 to approach the position of the impeller blade through the buffer component, so that the angle between the two second top blocks 312 is the same as the angle between two adjacent blades on the impeller, and drives the first movable rod 305 to rotate through the transmission component. The first movable rod 305 drives the support rod 306 to move, and the support rod 306 drives the first top block 309 to fit the root of the blade through the buffer component to support and fix the root of the blade, thereby clamping The force is dispersed to reduce the influence of concentrated force on the processing quality, and the impeller base shaft can be centrally clamped and positioned. At the same time, the support rod 306 drives the second top block 312 to fit the lower back of the blade through the first electrically controlled telescopic mechanism 310, the placement frame 311 and the buffer assembly, so as to support and lift the blade to offset the force during processing. The root clamping support and the bottom support support can improve the stability of the blade, and the buffer assembly can disperse the vibration force during processing to prevent the deformation of the blade during impeller processing and improve the quality of impeller processing.

[0030] like Figure 3 、 Figure 6As shown, the transmission assembly includes a motor 301, a bevel gear set 302 and a screw rod 303. The motor 301 is fixedly installed in the base 1, and the bevel gear set 302 is rotatably installed on the base 1. The bevel gear set 302 is fixedly connected to the output shaft of the motor 301, and the screw rod 303 is rotatably installed in the support frame 313. A movable part 304 is installed on the screw rod 303 through threaded cooperation. A driven bevel gear 314 is fixedly installed on the end of the screw rod 303. The driven bevel gear 314 is meshed and connected to the bevel gear set 302. The movable part 304 is slidably connected to the first movable rod 305. The motor 301 and the bevel gear set 302 work using existing technology. When adjusting the position of the clamping unit, the driven bevel gear 314 can be separated from the bevel gear set 302, which increases the convenience of adjustment. During the working process, the motor 301 drives the bevel gear group 302 to rotate, and the bevel gear group 302 drives the driven bevel gears 314 in all the clamping units to rotate, and the driven bevel gear 314 drives the screw rod 303 to rotate, and the screw rod 303 drives the movable part 304 to move, and the movable part 304 pushes the first movable rod 305. Through the motor 301, the bevel gear group 302, the driven bevel gear 314 and the screw rod 303, different clamping units can synchronously clamp or release the impeller, thereby improving the convenience of operation. At the same time, through synchronous linkage, the consistency of the clamping force on the impeller is guaranteed, the processing accuracy is improved, the deviation is reduced, and the deformation caused by uneven clamping force can be reduced, thereby ensuring the quality of processing.

[0031] like Figure 3 、 Figure 4 、 Figure 7 As shown, the buffer assembly includes a disc spring group 307, which is fixedly mounted on the end of the support rod 306 and the placement frame 311. A mounting frame 308 is fixedly mounted on the disc spring group 307. The mounting frame 308 is fixedly connected to the first top block 309 and the second top block 312 by bolts. The mounting frame 308 facilitates the replacement and installation of the first top block 309 and the second top block 312, thereby improving the convenience of operation. The disc spring group 307 enables the first top block 309 and the second top block 312 to buffer the contact with the impeller, thereby reducing the impact force at the moment of contact. At the same time, it can buffer the vibration of the processing during the processing, reduce vibration damage, and ensure the quality of the impeller processing.

[0032] like Figure 2 、 Figure 6 、 Figure 7As shown, the centering unit includes a second electrically-controlled telescopic mechanism 401 and a second movable rod 403. The second electrically-controlled telescopic mechanism 401 is fixedly installed in the positioning seat 2. A traction member 402 is fixedly installed on the telescopic end of the second electrically-controlled telescopic mechanism 401. The traction member 402 is slidably connected to the second movable rod 403. The second movable rod 403 is rotatably arranged at the upper end of the positioning seat 2. A support plate 404 is rotatably installed on the end of the second movable rod 403. The second electrically-controlled telescopic mechanism 401 works using the existing technology. When placing the impeller, the second electrically-controlled telescopic mechanism 401 drives the traction member 402 to rise upward, and the traction member 402 drives the second movable rod 403 and the support plate 404 to move, so that the second movable rod 403 and the support plate 404 are gathered together to facilitate the placement of the impeller. The mounting hole on the impeller base shaft is aligned with the traction member 402 so that the impeller base shaft is sleeved. It is connected to the second movable rod 403 and the support plate 404, and the second electrically-controlled telescopic mechanism 401 drives the traction member 402 to move downward, and the traction member 402 drives the second movable rod 403 to move, adjusts the inclination angle of the second movable rod 403, and the second movable rod 403 drives the support plate 404 to fit the inner wall of the impeller base shaft mounting hole, thereby supporting the impeller base shaft in multiple directions at the same time, and can center the impeller base shafts of different sizes, improve the accuracy of impeller installation, and facilitate better processing of the impeller. At the same time, since the second movable rod 403 tilts to support the support plate 404, the support plate 404 centers the impeller base shaft and applies an oblique downward force to the impeller base shaft, effectively preventing the impeller from moving during processing, improving the stability of the impeller during processing, and ensuring the processing quality.

[0033] like Figure 2-Figure 4 、 Figure 7 As shown, the surfaces of the first top block 309, the second top block 312 and the support plate 404 are fixedly installed with a pressure sensor 6 and a protective pad 5, and the protective pad 5 covers the pressure sensor 6. The pressure sensor 6 adopts the existing technology to detect the force applied to the impeller by the first top block 309, the second top block 312 and the support plate 404, which can not only ensure that the impeller is effectively clamped and fixed, but also avoid damage to the impeller caused by excessive clamping force. The protective pad 5 increases the anti-slip properties of the first top block 309, the second top block 312 and the support plate 404, so that the first top block 309, the second top block 312 and the support plate 404 can better clamp and fix the impeller, improve the stability of the impeller, and protect the impeller to avoid damage to the impeller caused by hard contact.

[0034] like Figure 1 、 Figure 5As shown, the mounting unit includes an annular seat 8 and a connecting seat 7. The annular seat 8 is fixedly mounted on the upper surface of the base 1, the connecting seat 7 is fixedly mounted on the support frame 313, the connecting seat 7 is slidably connected to the annular seat 8, and the connecting seat 7 is fixedly connected to the annular seat 8 by bolts. The clamping unit is fixedly mounted on the annular seat 8 through the connecting seat 7, and the installation position of the clamping unit on the annular seat 8 is adjusted by the connecting seat 7, so as to better clamp and fix the impellers of different sizes and blade numbers.

[0035] like Figure 1 、 Figure 5 As shown, a scale 9 is fixedly mounted on the upper surface of the base 1, and a pointer 10 is fixedly mounted on the side of the connecting seat 7. The pointer 10 is located directly above the scale 9. The scale 9 and the pointer 10 are used to facilitate control of the installation angle of the connecting seat 7, thereby adjusting the installation quantity and position of the clamping unit according to the number of blades of the impeller, thereby better clamping and fixing the impeller.

[0036] Working principle: Figure 1 、 Figure 3-Figure 5 、 Figure 7 As shown, according to the number of blades on the impeller to be processed, a corresponding number of clamping units are fixed to the annular seat 8 through the connecting seat 7. The installation position of the connecting seat 7 is determined by the ruler 9 and the pointer 10 to ensure the uniformity of the installation. The corresponding first top block 309 and second top block 312 are installed on the mounting frame 308 and fixed.

[0037] like Figure 2 、 Figure 6 、 Figure 7 As shown, the impeller is placed on the positioning seat 2. When the impeller is placed, the blades of the impeller are located on both sides of the support frame 313. The traction member 402 is driven to rise upward by the second electrically-controlled telescopic mechanism 401. The traction member 402 drives the second movable rod 403 and the support plate 404 to move, so that the second movable rod 403 and the support plate 404 are gathered together, and the mounting hole on the impeller base shaft is aligned with the traction member 402. The impeller base shaft is sleeved on the second movable rod 403 and the support plate 404. The traction member 402 is driven to move downward by the second electrically-controlled telescopic mechanism 401. The traction member 402 drives the second movable rod 403 to move. The second movable rod 403 drives the support plate 404 to fit onto the inner wall of the impeller base shaft mounting hole, thereby simultaneously supporting and positioning the impeller base shaft in multiple directions.

[0038] like Figure 3 、 Figure 6As shown, the motor 301 drives the bevel gear set 302 to rotate, and the bevel gear set 302 drives the driven bevel gears 314 in all the clamping units to rotate, and the driven bevel gear 314 drives the screw rod 303 to rotate, and the screw rod 303 drives the movable member 304 to move, and the movable member 304 pushes the first movable rod 305, which can synchronously drive all the clamping units to move;

[0039] like Figures 1-4 、 Figure 6 、 Figure 7 As shown, the first electrically controlled telescopic mechanism 310 drives the placement frame 311 to move, adjusts the inclination angle of the placement frame 311, and drives the support rod 306 to move through the first movable rod 305. The support rod 306 drives the first top block 309 to fit to the root of the blade through the mounting frame 308 and the disc spring assembly 307, thereby supporting and fixing the root of the blade and centrally clamping and positioning the impeller base shaft. At the same time, the support rod 306 drives the second top block 312 to fit to the back side of the lower end of the blade through the first electrically controlled telescopic mechanism 310, the placement frame 311, the mounting frame 308 and the disc spring assembly 307, thereby supporting and lifting the blade, improving the stability of the blade, and facilitating the processing of the impeller.

[0040] like Figure 2-Figure 4 、 Figure 7 As shown, when the first top block 309, the second top block 312 and the support plate 404 clamp and fix the impeller, the disc spring group 307 enables the first top block 309 and the second top block 312 to buffer the contact with the impeller, thereby reducing the impact force at the moment of contact, and the pressure sensor 6 detects the force applied to the impeller by the first top block 309, the second top block 312 and the support plate 404, so as to facilitate the control of the force, and the protective pad 5 enables the first top block 309, the second top block 312 and the support plate 404 to better clamp and fix the impeller, and protect the impeller to avoid damage to the impeller caused by hard contact.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. An impeller machining positioning clamping device, characterized in that: It comprises a base (1), a perforated plate (11) is fixedly mounted on the side of the base (1), a mounting unit and a positioning seat (2) are fixedly mounted on the upper surface of the base (1), a clamping unit is fixedly mounted on the mounting unit, and a centering unit is fixedly mounted on the positioning seat (2); The clamping unit comprises a support frame (313) and a placement frame (311), wherein the support frame (313) is arranged and fixed on the installation unit, a first movable rod (305) is rotatably installed in the support frame (313), a support rod (306) is rotatably installed on the upper end of the first movable rod (305), a first electric-controlled telescopic mechanism (310) is rotatably installed on both sides of the support rod (306), the placement frame (311) is rotatably connected to the telescopic end of the first electric-controlled telescopic mechanism (310) and the support rod (306), a buffer assembly is fixedly installed on the end of the support rod (306) and the placement frame (311), a first top block (309) and a second top block (312) are respectively installed on the buffer assembly, the first top block (309) surrounds the centering unit, a transmission assembly is fixedly installed in the base (1), and the transmission assembly is slidably connected to the first movable rod (305).

2. The impeller machining positioning and clamping device according to claim 1, characterized in that: The transmission assembly comprises a motor (301), a bevel gear set (302) and a screw rod (303), wherein the motor (301) is fixedly mounted in the base (1), the bevel gear set (302) is rotatably mounted on the base (1), the bevel gear set (302) is fixedly connected to the output shaft of the motor (301), the screw rod (303) is rotatably mounted in the support frame (313), a movable part (304) is mounted on the screw rod (303) through threaded engagement, a driven bevel gear (314) is fixedly mounted on the end of the screw rod (303), the driven bevel gear (314) is meshedly connected to the bevel gear set (302), and the movable part (304) is slidably connected to the first movable rod (305).

3. The impeller machining positioning and clamping device according to claim 1, characterized in that: The buffer assembly includes a disc spring group (307), the disc spring group (307) is fixedly mounted on the end of the support rod (306) and the placement frame (311), a mounting frame (308) is fixedly mounted on the disc spring group (307), and the mounting frame (308) is fixedly connected to the first top block (309) and the second top block (312) by bolts.

4. The impeller machining positioning and clamping device according to claim 1, characterized in that: The centering unit comprises a second electrically controlled telescopic mechanism (401) and a second movable rod (403); the second electrically controlled telescopic mechanism (401) is fixedly mounted in the positioning seat (2); a traction member (402) is fixedly mounted on the telescopic end of the second electrically controlled telescopic mechanism (401); the traction member (402) is slidably connected to the second movable rod (403); the second movable rod (403) is rotatably arranged at the upper end of the positioning seat (2); and a support plate (404) is rotatably mounted on the end of the second movable rod (403).

5. The impeller machining positioning and clamping device according to claim 4, characterized in that: A pressure sensor (6) and a protective pad (5) are fixedly mounted on the surfaces of the first top block (309), the second top block (312), and the support plate (404), and the protective pad (5) covers the pressure sensor (6).

6. The impeller machining positioning and clamping device according to claim 1, characterized in that: The mounting unit comprises an annular seat (8) and a connecting seat (7), wherein the annular seat (8) is fixedly mounted on the upper surface of the base (1), and the connecting seat (7) is fixedly mounted on the support frame (313), wherein the connecting seat (7) is slidably connected to the annular seat (8), and the connecting seat (7) is fixedly connected to the annular seat (8) by bolts.

7. The impeller machining positioning and clamping device according to claim 6, characterized in that: A scale (9) is fixedly mounted on the upper surface of the base (1), and a pointer (10) is fixedly mounted on the side of the connecting seat (7), wherein the pointer (10) is located directly above the scale (9).

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