A grinding method for high-precision composite material blades

Abstract

This invention relates to a high-precision grinding method for composite material blades, comprising a grinding apparatus including a frame and a clamping seat located on the frame for holding the blade. The clamping seat is driven to move by a drive mechanism. The side of the frame is equipped with only pairs of grinding wheels. The lower part of the blade to be ground, held by the clamping seat, is located between the pairs of grinding wheels. This invention utilizes grinding equipment to achieve higher consistency in blade grinding, and the use of paired grinding wheels increases efficiency and significantly reduces manual labor intensity. Furthermore, in this embodiment, a positioning cylinder can pre-position the blade, adjusting its posture before grinding to facilitate clamping and improve grinding accuracy.

Description

Technical Field

[0001] This invention relates to a grinding method for high-precision composite material blades. Background Technology

[0002] like Figure 2 As shown, composite material blades are important components of aerodynamic or hydrodynamic engines. The mounting base 101 of the blade requires a tolerance of + / -0.02mm. Traditional machine grinding requires repeated manual rework to achieve the required precision, resulting in low product yield and high labor costs. The equipment of this invention adopts a pre-positioning design, adjusting the blade's posture before grinding to improve the consistency of subsequent grinding. Summary of the Invention

[0003] To address the issue of existing composite blades used in aerodynamic or hydrodynamic engines, critical components require repeated manual rework to achieve the required precision, resulting in low efficiency and yield.

[0004] The technical solution of the present invention is as follows: a grinding method for high-precision composite material blades, using a grinding device, the grinding device including a frame and a clamping seat located on the frame for holding the blade, the clamping seat being driven to move by a driving mechanism, the side of the frame being provided with only pairs of grinding wheels, and the lower part of the blade to be ground held by the clamping seat being located between the pairs of grinding wheels.

[0005] The drive mechanism includes a guide rail fixed to the upper surface of the frame, a clamping seat with a sliding fit on the guide rail, a right clamping piece fixedly connected to the side of the clamping seat facing the grinding wheel, a left clamping piece provided at the end of the clamping seat opposite to the right clamping piece, the left clamping piece being driven to move by an electric cylinder provided on the clamping seat, and a clamping motor for driving the clamping seat to move on the frame.

[0006] A pad is fixed to one side of the grinding wheel on the frame, and a positioning cylinder is fixed to the side of the pad on the frame. A pressure plate is fixed to the telescopic end of the positioning cylinder facing the pad. The lower edge of the pad has a support plate for placing blades, and the pressure plate is located outside the support plate.

[0007] The specific steps are as follows:

[0008] (1) Position the blade to be ground in advance and place the bottom of the blade grinding part on the support plate. At this time, the left clamp and the right clamp are respectively located on the left and right sides of the support plate. Then the positioning cylinder retracts to clamp the blade between the pressure plate and the pad, so that the blade is in a vertical position. Then the left clamp is driven by the electric cylinder to cooperate with the right clamp to clamp the blade. After the left clamp and the right clamp clamp the blade, the positioning cylinder releases the clamp on the blade, thereby satisfying the subsequent movement of the blade.

[0009] (2) The left and right clamps continuously clamp the blade, which is fixed in the fixture seat. Then, driven by the fixture motor, the lower end of the blade passes between the pairs of grinding wheels along the guide rail. The lower end of the blade is polished by the grinding wheels to achieve the grinding precision.

[0010] Preferably, the grinding wheel has multiple pairs, with each pair of grinding wheels coaxially fixed on a rotating shaft, the multiple pairs of grinding wheels arranged in parallel, and adjacent rotating shafts having meshing transmission gears, one of the rotating shafts being driven to rotate by a grinding wheel motor.

[0011] Preferably, a lead screw driven by a clamp motor is hinged to the frame, and the clamp seat is threadedly engaged with the lead screw, so that the clamp seat and the lead screw form a lead screw-nut pair to drive the clamp seat to reciprocate along the guide rail.

[0012] Preferably, a hopper is fixed to the rear side of the frame and located to the left of each grinding wheel. A top-loading cylinder is fixed on the frame, with the telescopic end of the top-loading cylinder facing the discharge end of the hopper. After the lower end of the blade passes each pair of grinding wheels, it moves to the top of the hopper. Then, the left clamp is driven by the electric cylinder to move and release the blade. After that, the telescopic end of the top-loading cylinder extends to push the blade out of the hopper.

[0013] Preferably, the grinding wheel is covered with a protective cover, and the side of the protective cover has slots for the input and output of blades.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The equipment of this invention improves the consistency of subsequent grinding, utilizes highly wear-resistant composite materials, and employs paired grinding wheels for high efficiency, significantly reducing manual labor intensity and improving grinding precision. Furthermore, in this embodiment, the positioning cylinder pre-positions the blades, adjusting their posture before grinding to facilitate clamping by the fixture and enhance grinding accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the blade structure of the present invention.

[0018] In the diagram, 100-blade, 10-frame, 30-grinding wheel, 310-protective cover, 311-groove, 40-clamp seat, 410-right clamping plate, 420-left clamping plate, 421-electric cylinder, 430-motor, 431-lead screw, 50-feeding hopper, 510-top material cylinder, 60-pad block, 610-positioning cylinder, 620-pressure plate, 630-support plate. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0020] See Figure 1-2 A high-precision composite material blade grinding method includes using a grinding device, the grinding device including a frame 10 and a clamping seat 40 located on the frame for holding the blade, the clamping seat 40 being driven to move by a drive mechanism, the side of the frame being provided with only pairs of grinding wheels 30, and the lower part of the blade to be ground held by the clamping seat 40 being located between the pairs of grinding wheels 30.

[0021] In this embodiment, the grinding wheel 30 has multiple pairs, and the same pair of grinding wheels 30 is coaxially fixed on a rotating shaft. The multiple pairs of grinding wheels are arranged in parallel, and the adjacent rotating shafts have mutually meshing transmission gears. One of the rotating shafts is driven to rotate by a grinding wheel motor.

[0022] The drive mechanism includes a guide rail 410 fixed to the upper surface of the frame, and a clamping seat 40 with a sliding fit on the guide rail. A right clamping piece 410 is fixedly connected to the side of the clamping seat 40 facing the grinding wheel 30, and a left clamping piece 420 is provided at the end of the clamping seat opposite to the right clamping piece. The left clamping piece is driven to move by an electric cylinder 421 provided on the clamping seat 40. The frame 10 also has a clamping motor 430 for driving the clamping seat 40 to move.

[0023] The frame 10 is hinged to a lead screw 431 driven to rotate by a clamp motor 430. The clamp seat 40 is threadedly engaged with the lead screw 431 to drive the clamp seat 40 and the lead screw 431 to form a lead screw 431 nut pair to drive the clamp seat to reciprocate along the guide rail 410.

[0024] During operation, the blade 100 is clamped by the left clamp 420 driven by the electric cylinder 421 and the right clamp 410. The blade 100 is then fixed on the fixture seat 40. The fixture seat 40 moves along the guide rail 410 under the drive of the fixture motor. The lower end of the blade 100 passes between a pair of grinding wheels 30. The lower end of the blade 100 is polished by the grinding wheels 30 to achieve the grinding precision.

[0025] In one embodiment of the present invention, a hopper 50 located to the left of each grinding wheel is fixed on the rear side of the frame, and a top-loading cylinder 510 is fixed on the frame, with the telescopic end of the top-loading cylinder facing the discharge end of the hopper.

[0026] After the lower end of the blade 100 passes each pair of grinding wheels 30, it moves to the top of the hopper 50. Then, the left clamp 420 is driven by the electric cylinder 421 to move and release the blade 100. After that, the telescopic end of the top material cylinder 510 extends to push the blade 100 out of the hopper 50.

[0027] In an embodiment of the present invention, a pad 60 is fixed on one side of the grinding wheel 30 in the frame 10, a positioning cylinder 610 is fixed on the side of the pad in the frame, a pressure plate 620 is fixed on the telescopic end of the positioning cylinder facing the pad, the lower edge of the pad 60 has a support plate 630 for placing blades, and the pressure plate 620 is located outside the support plate 630.

[0028] To position the blade 100 before clamping it in its initial state, the bottom of the blade 100 is pre-placed on the support plate 630. Then, the positioning cylinder 610 retracts, using the pressure plate 620 and the pad 60 to clamp and position the blade. The left clamping plate 420 and the right clamping plate 410 clamp the blade 100, keeping it in a vertical position. To avoid interference, the right clamping plate 410 is offset in height from the pads 60 and 620, and the left and right clamping plates 420 and 410 should be higher than the grinding portion of the blade.

[0029] Then, the positioning cylinder 610 releases its grip on the blade 100, thereby allowing the blade 100 to move subsequently.

[0030] In one embodiment of the present invention, the grinding wheel 30 is covered with a protective cover 310, and the side of the protective cover has a slot 311 for blade input and output.

[0031] A grinding method for high-precision composite material blades, utilizing the grinding method for high-precision composite material blades as described above, specifically includes the following steps:

[0032] (1) Position the blade to be ground in advance and place the bottom of the blade grinding part on the support plate. At this time, the left clamp and the right clamp are respectively located on the left and right sides of the support plate. Then the positioning cylinder retracts to clamp the blade between the pressure plate and the pad, so that the blade is in a vertical position. Then the left clamp is driven by the electric cylinder to cooperate with the right clamp to clamp the blade. After the left clamp and the right clamp clamp the blade, the positioning cylinder releases the clamp on the blade, thereby satisfying the subsequent movement of the blade.

[0033] (2) The left and right clamps continuously clamp the blade, which is fixed in the fixture seat. Then, driven by the fixture motor, the blade passes between a pair of grinding wheels along the guide rail. The lower end of the blade is polished by the grinding wheels to achieve the grinding precision.

[0034] (3) After the lower end of the blade passes through each pair of grinding wheels, it moves to the top of the hopper. Then the left clamp is driven by the electric cylinder to move and release the blade. Then the extension end of the top cylinder extends to push the blade out of the hopper.

[0035] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A grinding method for high-precision composite material blades, characterized in that, A grinding apparatus is used, the grinding apparatus including a frame and a clamping seat located on the frame for holding a blade, the clamping seat being driven to move by a drive mechanism, a pair of grinding wheels being provided on the side of the frame, and the lower part of the blade to be ground held by the clamping seat being located between the pair of grinding wheels. The drive mechanism includes a guide rail fixed to the upper surface of the frame, a clamping seat with a sliding fit on the guide rail, a right clamping piece fixedly connected to the side of the clamping seat facing the grinding wheel, a left clamping piece provided at the end of the clamping seat opposite to the right clamping piece, the left clamping piece being driven to move by an electric cylinder provided on the clamping seat, and a clamping motor for driving the clamping seat to move on the frame. A pad is fixed to one side of the grinding wheel on the frame, and a positioning cylinder is fixed to the side of the pad on the frame. A pressure plate is fixed to the telescopic end of the positioning cylinder facing the pad. The lower edge of the pad has a support plate for placing blades, and the pressure plate is located outside the support plate. The specific steps are as follows: (1) Position the blade to be ground in advance and place the bottom of the blade grinding part on the support plate. At this time, the left clamp and the right clamp are respectively located on the left and right sides of the support plate. Then the positioning cylinder retracts to clamp the blade between the pressure plate and the pad, so that the blade is in a vertical position. Then the left clamp is driven by the electric cylinder to cooperate with the right clamp to clamp the blade. After the left clamp and the right clamp clamp the blade, the positioning cylinder releases the clamp on the blade, thereby satisfying the subsequent movement of the blade. (2) The left and right clamps continuously clamp the blade, which is fixed in the fixture seat. Then, driven by the fixture motor, the lower end of the blade passes between the pairs of grinding wheels along the guide rail. The lower end of the blade is polished by the grinding wheels to achieve the grinding precision. The grinding wheels are in multiple pairs, with each pair of grinding wheels coaxially fixed on a rotating shaft. The multiple pairs of grinding wheels are arranged in parallel, and adjacent rotating shafts have meshing transmission gears. One of the rotating shafts is driven to rotate by a grinding wheel motor.

2. The grinding method for high-precision composite material blades according to claim 1, characterized in that, A lead screw driven by a clamp motor is hinged to the frame. The clamp seat is threadedly engaged with the lead screw, so that the clamp seat and the lead screw form a lead screw-nut pair to drive the clamp seat to reciprocate along the guide rail.

3. The grinding method for high-precision composite material blades according to claim 2, characterized in that, The rear side of the frame is fixed with a hopper located to the left of each grinding wheel. A top-loading cylinder is fixed on the frame. The telescopic end of the top-loading cylinder faces the discharge end of the hopper. After the lower end of the blade passes each pair of grinding wheels, it moves to the top of the hopper. Then, the left clamp is driven by the electric cylinder to move and release the blade. After that, the telescopic end of the top-loading cylinder extends to push the blade out of the hopper.

4. The grinding method for high-precision composite material blades according to claim 3, characterized in that, The grinding wheel is covered with a protective cover, and the side of the protective cover has slots for the input and output of blades.

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