Blade water grinding machine tool and grinding method

Abstract

The present invention discloses a blade water flow grinding machine and a grinding method, wherein the grinding machine comprises a base, the base is fixedly connected with a column, the column is connected with a Z axis, the base is provided with a Y axis, the Y axis is provided with an X axis, the X axis is fixedly connected with a conveying device, the Z axis is connected with a grinding device, the grinding device comprises a plurality of grinding mechanisms, the plurality of grinding mechanisms are arranged at intervals in the front-back direction, each grinding mechanism may correspond to a clamping device for grinding the blade clamped by the clamping device, each grinding mechanism corresponds to grinding a section of the blade, and a blade is ground by all the grinding mechanisms provided on the bending plate to complete the grinding process, thereby greatly improving the production efficiency. The technical solution of the present invention improves the processing efficiency, reduces the processing cost, and meets the low-cost processing requirements of small margin forged blades, cast turbine blades, and rolled blades of aero engines and gas turbines.

Description

Technical Field

[0001] The invention relates to the technical field of multi-axis numerical control machining machines, and in particular to a blade water flow grinding machine and a grinding method. Background Art

[0002] As the core parts of aircraft engines, which are known as the "flower of industry", aircraft engine blades play a decisive role in the performance of aircraft engines. Therefore, the efficiency and quality of aircraft engine blade processing are particularly important for the development of aerospace industry. Traditional blade grinding machines generally have high costs and low efficiency. Therefore, there is an urgent need to develop a low-cost grinding machine with processing efficiency increased to several times the current level and processing costs greatly reduced to meet the low-cost processing requirements of small-residue forged blades, cast turbine blades, and rolled blades for aircraft engines and steam turbines. Summary of the invention

[0003] In order to solve the above technical problems, a blade water grinding machine and grinding method are proposed. The specific technical solutions are as follows:

[0004] A blade water grinding machine tool comprises a conveying device, a clamping device, a base, a Y axis, an X axis, a column and a Z axis;

[0005] One end of the column is fixedly connected to the base, and the other end is connected to the Z axis;

[0006] The upper end of the base is provided with a Y-axis, and the upper end of the Y-axis is provided with an X-axis;

[0007] The X-axis is fixedly connected with a conveying device;

[0008] The Z axis is connected with a grinding device, and the grinding device is arranged above the conveying device;

[0009] The conveying device includes a conveying chain, a clamping plate, a connecting seat, a lower positioning plate, a supporting cylinder, and an upper positioning plate;

[0010] The conveyor chain comprises a plurality of hinged chain links, a clamping plate is fixedly connected to the chain links, two connecting seats are fixed to each clamping plate, the connecting seats are fixedly connected to a clamping device, and the clamping device is used to clamp the blades;

[0011] The grinding device comprises a bending plate, a lifting plate and a grinding mechanism;

[0012] The bending plate is fixedly connected to the Z axis;

[0013] The bending plate is connected to a plurality of lifting plates, each of which is fixedly connected to a grinding mechanism, and the plurality of grinding mechanisms are arranged at intervals in the front-to-back direction, and each grinding mechanism may correspond to a clamping device for grinding a blade clamped by the clamping device, and each grinding mechanism corresponds to grinding a section of the blade, and a blade is ground after being ground by all the grinding mechanisms arranged on the bending plate;

[0014] A blade clamping position is arranged at the lower left of the bending plate, and a blade disassembling position is arranged at the lower right of the bending plate.

[0015] The blade water grinding machine tool described above has a preferred embodiment in which the grinding mechanism includes a mounting plate fixedly connected to the lifting plate, and a driven pulley and a driving pulley driven by the power device I are mounted on the mounting plate;

[0016] The driving pulley and the driven pulley are wound with abrasive belts, which are used for grinding the blades;

[0017] The bending plate is provided with a slide rail, the lifting plate is provided with a slider matched with the slide rail, and the lifting plate can slide up and down under the drive of a power device composed of a servo motor and a screw nut pair. By adopting this technical solution, the movement of the X-axis, Y-axis, Z-axis and the grinding mechanism is controlled so that the abrasive belt can grind the blade according to the processing requirements.

[0018] The preferred embodiment of the blade water grinding machine tool is that the conveying device includes a lower positioning plate and an upper positioning plate fixedly connected to the X-axis;

[0019] Both sides of the clamping plate run along the conveying chain in the gap between the lower positioning plate and the upper positioning plate;

[0020] The upper end of the lower positioning plate is provided with a supporting cylinder, and the lower end of the upper positioning plate is provided with a pressing cylinder 1.8. By adopting this technical solution, the clamping plate is fixed by controlling the supporting cylinder and the pressing cylinder 1.8, so as to ensure the fixation of the blade during grinding, thereby ensuring the grinding quality.

[0021] The preferred embodiment of the blade water flow grinding machine is that the clamping device includes a clamping base, a clamping connection block is fixedly connected to the clamping base, the clamping connection block is fixedly connected to the connection seat, and a positioning hole for positioning the blade is also provided on the clamping base.

[0022] The preferred embodiment of the blade water flow grinding machine tool is that the cross section of the clamping base is a regular triangle, a square, a regular pentagon or a regular hexagon.

[0023] The preferred solution of the blade water grinding machine is that a zero point positioning system is provided on the conveying chain.

[0024] A method for grinding a blade with a water-flow grinding machine comprises the following steps:

[0025] Step 1: Clamp the blade at the blade clamping position, start the conveyor chain to run clockwise so that the blade clamped at the blade clamping position runs to the bottom of the leftmost grinding mechanism;

[0026] Step 2: Control the supporting cylinder and the pressing cylinder to fix the two ends of the clamping plate between the lower positioning plate and the upper positioning plate;

[0027] Step 3: The Y-axis drives the conveyor to move in the front-to-back direction, the X-axis drives the conveyor to move in the left-to-right direction, and the Z-axis drives the bending plate to move in the up-down direction. Each grinding mechanism can move independently in the up-down direction, and each grinding mechanism grinds a section of the blade directly below it;

[0028] Step 4: After the grinding mechanism has ground the corresponding section of the blade, the supporting cylinder and the pressing cylinder are controlled to loosen the clamping plate between the lower positioning plate and the upper positioning plate, and the conveyor chain is started to rotate clockwise to drive the blade clamped by the clamping device to run one grinding station to the right. Before each clockwise movement of the conveyor chain, a blade is clamped at the blade clamping position;

[0029] Step 5: Repeat steps 2 to 4 until one end surface of the blade is completely ground, and remove the processed blade from the blade disassembly position.

[0030] The present invention proposes a blade water grinding machine and a grinding method. N grinding mechanisms are set up to divide the blade into n sections for grinding. The blade can be ground by switching n grinding stations. The grinding machine can grind 1-n blades at the same time, greatly improving production efficiency. The technical solution of the present invention improves processing efficiency, reduces processing costs, and meets the low-cost processing requirements of small-residue forged blades, cast turbine blades, and rolled blades for aircraft engines and steam turbines. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a blade water flow grinding machine tool;

[0032] Figure 2 A schematic diagram of the internal structure of the positioning cylinder for the conveyor;

[0033] Figure 3 is a schematic diagram of the structure of the transmission device;

[0034] Figure 4 It is a schematic diagram of the structure after the blade is clamped;

[0035] Figure 5 It is a schematic diagram of the structure of the coordinated installation of the grinding device, the clamping device and the conveying device;

[0036] Figure 6 is a schematic diagram of the structure of the grinding mechanism;

[0037] Figure 7 A is a schematic diagram of the structure of the clamping device;

[0038] Figure 8 b is a structural schematic diagram of the clamping device;

[0039] Fig. 9 It is the structural schematic diagram of the clamping device c.

[0040] In the figure: 1-transmission device, 2-clamping device, 3-grinding device, 4-base, 5-Y axis, 6-X axis, 7-column, 8-Z axis, 9-blade, 10-blade clamping position, 11-blade disassembly position;

[0041] 1.1-transmission chain, 1.2-clamping plate, 1.3-connecting seat, 1.4-lower positioning plate, 1.5-positioning cylinder, 1.6-upper positioning plate, 1.7-chain link, 1.8-pressing cylinder;

[0042] 2.1-clamping base, 2.2-clamping connecting block;

[0043] 3.1-bending plate, 3.2-lifting plate, 3.3-grinding mechanism, 3.3.1-mounting plate, 3.3.2-power device I, 3.3.3-driving pulley, 3.3.4-driven pulley, 3.3.5-grinding belt, 3.3.6-servo motor, 3.3.7-screw nut pair. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-8 The present invention is further described in detail with reference to the accompanying drawings and examples.

[0045] The present invention proposes a blade water grinding machine tool, comprising a conveying device 1, a clamping device 2, a grinding device 3, a base 4, a Y axis 5, an X axis 6, a column 7 and a Z axis 8;

[0046] One end of the column 7 is fixedly connected to the base 4, and the other end is connected to the Z axis 8;

[0047] The upper end of the base 4 is provided with a Y-axis 5, and the upper end of the Y-axis 5 is provided with an X-axis 6;

[0048] The X-axis 6 is fixedly connected with a conveying device 1;

[0049] The Z-axis 8 is connected to a grinding device 3, and the grinding device 3 is arranged above the conveying device 1;

[0050] The conveying device 1 comprises a conveying chain 1.1, a clamping plate 1.2, a connecting seat 1.3, a lower positioning plate 1.4, a positioning cylinder 1.5, and an upper positioning plate 1.6;

[0051] The conveyor chain 1.1 comprises a plurality of hinged chain links 1.7, to which a clamping plate 1.2 is fixedly connected, and each clamping plate 1.2 is fixedly provided with two connecting seats 1.3, and the connecting seats 1.3 are fixedly connected to a clamping device 2, and the clamping device 2 is used to clamp the blade 9;

[0052] The grinding device 3 comprises a bending plate 3.1, a lifting plate 3.2 and a grinding mechanism 3.3;

[0053] The bending plate 3.1 is fixedly connected to the Z axis 8;

[0054] The bending plate 3.1 is connected to a plurality of lifting plates 3.2, each lifting plate 3.2 is fixedly connected to a grinding mechanism 3.3, and the plurality of grinding mechanisms 3.3 are arranged at intervals in the front-back direction, and each grinding mechanism 3.3 can correspond to a clamping device 2 for grinding a blade 9 clamped by the clamping device 2, and each grinding mechanism 3.3 is corresponding to grinding a section of the blade 9, and a blade 9 is ground by all the grinding mechanisms 3.3 arranged on the bending plate 3.1 to complete the grinding process;

[0055] A blade clamping position 10 is provided at the lower left of the bending plate 3.1, and a blade disassembly position 11 is provided at the lower right of the bending plate 3.1.

[0056] The grinding mechanism 3.3 comprises a mounting plate 3.3.1 fixedly connected to the lifting plate 3.2, on which a driven pulley 3.3.4 and a driving pulley 3.3.3 driven by a power device I 3.3.2 are mounted;

[0057] The driving pulley 3.3.3 and the driven pulley 3.3.4 are wound with a grinding belt 3.3.5, and the grinding belt 3.3.5 is used for grinding the blade 9;

[0058] The bending plate 3.1 is provided with a slide rail, the lifting plate 3.2 is provided with a slider matched with the slide rail, and the lifting plate 3.2 can slide up and down under the drive of a power device composed of a servo motor 3.3.6 and a screw nut pair 3.3.7. With this technical solution, the abrasive belt can grind the blade according to the processing requirements by controlling the movement of the X-axis 6, the Y-axis 5, the Z-axis 8 and the grinding mechanism.

[0059] The conveying device 1 comprises a lower positioning plate 1.4 and an upper positioning plate 1.6 fixedly connected to the X-axis 6;

[0060] Both sides of the clamping plate 1.2 run along the conveying chain 1.1 in the gap between the lower positioning plate 1.4 and the upper positioning plate 1.6;

[0061] The upper end of the lower positioning plate 1.4 is provided with a positioning cylinder 1.5, and the lower end of the upper positioning plate 1.6 is provided with a pressing cylinder 1.8. By adopting this technical solution, the clamping plate is fixed by controlling the positioning cylinder 1.5 and the pressing cylinder 1.8, so as to ensure the fixation of the blade 9 during the grinding process, thereby ensuring the grinding process quality.

[0062] The clamping device 2 comprises a clamping base 2.1, to which a clamping connection block 2.2 is fixedly connected. The clamping connection block 2.2 is fixedly connected to the connection seat 1.3. A positioning hole for positioning the blade 9 is also provided on the clamping base 2.1.

[0063] The cross section of the clamping base 2.1 is a regular triangle, a square, a regular pentagon or a regular hexagon.

[0064] The conveyor chain 1.1 is provided with a zero point positioning system.

[0065] A method for grinding a blade with a water-flow grinding machine comprises the following steps:

[0066] Step 1: Clamp the blade 9 at the blade 9 clamping position, start the conveyor chain 1.1 to run clockwise so that the blade 9 clamped at the blade 9 clamping position runs to the bottom of the leftmost grinding mechanism 3.3;

[0067] Step 2: Control the positioning cylinder 1.5 and the pressing cylinder 1.8 to fix the two ends of the clamping plate 1.2 between the lower positioning plate 1.4 and the upper positioning plate 1.6;

[0068] Step 3: The Y-axis 5 drives the conveyor 1 to move in the front-to-back direction, the X-axis 6 drives the conveyor 1 to move in the left-to-right direction, and the Z-axis 8 drives the bending plate 3.1 to move in the up-down direction, and each grinding mechanism 3.3 can move in the up-down direction independently, and each grinding mechanism 3.3 grinds a section of the blade 9 directly below it;

[0069] Step 4: After the grinding mechanism 3.3 grinds the corresponding section of the blade 9, the positioning cylinder 1.5 and the pressing cylinder 1.8 are controlled to loosen the clamping plate 1.2 between the lower positioning plate 1.4 and the upper positioning plate 1.6, and the conveying chain 1.1 is started to rotate clockwise to drive the blade 9 clamped by the clamping device 2 to move one grinding station to the right. Before each clockwise movement of the conveying chain 1.1, a blade 9 is clamped at the blade 9 clamping position;

[0070] Step 5: Repeat steps 2 to 4 until one end surface of the blade 9 is completely ground, and then remove the blade 9 from the disassembly position.

Claims

1. A blade water grinding machine, characterized in that: It comprises a conveying device (1), a clamping device (2), a grinding device (3), a base (4), a Y-axis (5), an X-axis (6), a column (7) and a Z-axis (8); One end of the column (7) is fixedly connected to the base (4), and the other end is connected to the Z axis (8); The upper end of the base (4) is provided with a Y-axis (5), and the upper end of the Y-axis (5) is provided with an X-axis (6); The X-axis (6) is fixedly connected to a conveying device (1); The Z axis (8) is connected to a grinding device (3), and the grinding device (3) is arranged above the conveying device (1); The conveying device (1) comprises a conveying chain (1.1), a clamping plate (1.2), a connecting seat (1.3), a lower positioning plate (1.4), a supporting cylinder (1.5), and an upper positioning plate (1.6); The conveyor chain (1.1) comprises a plurality of hinged chain links (1.7), the chain links (1.7) being fixedly connected to clamping plates (1.2), each clamping plate (1.2) being fixedly connected to two connecting seats (1.3), the connecting seats (1.3) being fixedly connected to a clamping device (2), the clamping device (2) being used to clamp a blade (9); The grinding device (3) comprises a bending plate (3.1), a lifting plate (3.2) and a grinding mechanism (3.3); The bending plate (3.1) is fixedly connected to the Z axis (8); The bending plate (3.1) is connected to a plurality of lifting plates (3.2), each lifting plate (3.2) is fixedly connected to a grinding mechanism (3.3), the plurality of grinding mechanisms (3.3) are arranged at intervals in the front-rear direction, each grinding mechanism (3.3) can correspond to a clamping device (2) for grinding a blade (9) clamped by the clamping device (2), each grinding mechanism (3.3) is corresponding to grinding a section of the blade (9), and a blade (9) is ground by all the grinding mechanisms (3.3) arranged on the bending plate (3.1), completing the grinding process; A blade clamping position (10) is provided at the lower left of the bending plate (3.1), and a blade disassembly position (11) is provided at the lower right of the bending plate (3.1); The grinding mechanism (3.3) comprises a mounting plate (3.3.1) fixedly connected to the lifting plate (3.2), and a driven pulley (3.3.4) and a driving pulley (3.3.3) driven by a power device I (3.3.2) are mounted on the mounting plate (3.3.1); A grinding belt (3.3.5) is wound around the driving pulley (3.3.3) and the driven pulley (3.3.4), and the grinding belt (3.3.5) is used for grinding the blade (9); The bending plate (3.1) is provided with a slide rail, the lifting plate (3.2) is provided with a slider matched with the slide rail, and the lifting plate (3.2) can slide up and down under the drive of a power device composed of a servo motor (3.3.6) and a screw nut pair (3.3.7); The conveying device (1) comprises a lower positioning plate (1.4) and an upper positioning plate (1.6) fixedly connected to the X-axis (6); Both sides of the clamping plate (1.2) run along the conveying chain (1.1) in the gap between the lower positioning plate (1.4) and the upper positioning plate (1.6); A supporting cylinder (1.5) is provided at the upper end of the lower positioning plate (1.4), and a pressing cylinder (1.8) is provided at the lower end of the upper positioning plate (1.6).

2. The blade water grinding machine according to claim 1, characterized in that: The clamping device (2) comprises a clamping base (2.1), a clamping connection block (2.2) being fixedly connected to the clamping base (2.1), the clamping connection block (2.2) being fixedly connected to the connection seat (1.3), and a positioning hole for positioning the blade (9) being further provided on the clamping base (2.1).

3. The blade water grinding machine according to claim 2, characterized in that: The cross-section of the clamping base (2.1) is a regular triangle, a square, a regular pentagon, or a regular hexagon.

4. The blade water grinding machine according to claim 1, characterized in that: The conveying chain (1.1) is provided with a zero point positioning system.

5. The grinding method of a blade water grinding machine according to any one of claims 1 to 4, characterized in that: The following steps are included: Step 1: Clamp the blade (9) at the blade (9) clamping position, start the conveyor chain (1.1) to run clockwise so that the blade (9) clamped at the blade (9) clamping position runs to the position directly below the leftmost grinding mechanism (3.3); Step 2: Control the supporting cylinder (1.5) and the pressing cylinder 1.8 to fix the two ends of the clamping plate (1.2) between the lower positioning plate (1.4) and the upper positioning plate (1.6); Step 3: The Y axis (5) drives the conveying device (1) to move in the front-back direction, the X axis (6) drives the conveying device (1) to move in the left-right direction, and the Z axis (8) drives the bending plate (3.1) to move in the up-down direction, and each grinding mechanism (3.3) can move in the up-down direction independently, and each grinding mechanism (3.3) grinds a section of the blade (9) directly below it; Step 4: After the grinding mechanism (3.3) has ground the corresponding section of the blade (9), the supporting cylinder (1.5) and the pressing cylinder (1.8) are controlled to loosen the clamping plate (1.2) between the lower positioning plate (1.4) and the upper positioning plate (1.6), and the conveyor chain (1.1) is started to rotate clockwise to drive the blade (9) clamped by the clamping device (2) to move to the right by one grinding station. Before each clockwise movement of the conveyor chain (1.1), a blade (9) is clamped at the blade (9) clamping position; Step 5: Repeat steps 2 to 4 until one end surface of the blade (9) is completely ground, and remove the finished blade (9) from the blade (9) removal position.

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