grinding and polishing blade air inlet and outlet edge equipment
阅读说明:本技术 一种磨削抛光叶片进排气边的设备 (grinding and polishing blade air inlet and outlet edge equipment ) 是由 荆亮 于 2019-12-09 设计创作,主要内容包括:本发明公开了一种磨削抛光叶片进排气边的设备,包括机架、砂带驱动电机、机架基座以及浮动磨削抛光总成,所述浮动磨削抛光总成包括:浮动机架、机架浮动比例气缸、下浮动臂浮动比例气缸、下浮动磨削抛光接触体、下浮动臂、浮动臂铰链、上浮动磨削抛光接触体、上浮动臂、上浮动臂浮动比例气缸、凸轮轴驱动电机、磨削抛光机架、直线轴承杆、直线轴承套,所述磨削抛光机架与直线轴承杆固定连接,直线轴承杆活动安装于直线轴承套内。本发明磨削抛光性能稳定,进排气边的各部分圆弧段磨削抛光均匀,性能稳定可靠;磨削抛光效率和精度高,没有面域与面域间衔接痕迹、过度圆滑。(The invention discloses equipment for grinding and polishing air inlet and exhaust edges of blades, which comprises a rack, an abrasive belt driving motor, a rack base and a floating grinding and polishing assembly, wherein the floating grinding and polishing assembly comprises a floating rack, a rack floating proportion cylinder, a lower floating arm floating proportion cylinder, a lower floating grinding and polishing contact body, a lower floating arm, a floating arm hinge, an upper floating grinding and polishing contact body, an upper floating arm floating proportion cylinder, a cam shaft driving motor, a grinding and polishing rack, a linear bearing rod and a linear bearing sleeve.)
The device for grinding and polishing the air inlet and outlet edges of the blades comprises a rack (1), an abrasive belt driving motor (3), a rack base (6) and a floating grinding and polishing assembly (7), and is characterized in that the floating grinding and polishing assembly (7) comprises a floating rack (71), a rack floating proportion cylinder (72), a lower floating arm floating proportion cylinder (73), a lower floating grinding and polishing contact body (74), a lower floating arm (75), a floating arm hinge (76), an upper floating grinding and polishing contact body (77), an upper floating arm (78), an upper floating proportion cylinder (79), a camshaft driving motor (710), a grinding and polishing rack (711), a linear bearing rod (712) and a linear bearing sleeve (713), wherein the rack floating proportion cylinder (72) is fixedly arranged on the floating rack (71), the end of the cylinder rod is fixedly connected with the rack base (6), the floating rack (71) is slidably arranged on the rack base (6), the grinding and polishing rack (711) is fixedly connected with the linear bearing rod (712), the linear bearing rod (712) is movably arranged in the linear bearing sleeve (712), and the camshaft driving motor (710) is arranged on a camshaft driving cam shaft (710) and is matched with a grinding and a cam shaft (710);
the upper floating arm (78) and the lower floating arm (75) are rotatably connected with a grinding and polishing rack (711), and an upper floating arm floating proportion cylinder (79) and a lower floating arm floating proportion cylinder (73) are respectively arranged above and below the upper floating arm (78) and the lower floating arm (75) on the grinding and polishing rack (711);
the ends of the upper floating arm (78) and the lower floating arm (75) are respectively provided with an upper floating grinding and polishing contact body (77) and a lower floating grinding and polishing contact body (74).
2. grinding and polishing blade air inlet and outlet edge equipment according to claim 1, wherein the abrasive belt (5) is wound around the belt drive motor (3), the belt tension wheel (4) and the end faces of the upper floating grinding and polishing contact body (77) and the lower floating grinding and polishing contact body (74).
3. An apparatus for grinding and polishing air inlet and outlet edges of kinds of blades according to claim 2, wherein the upper floating grinding and polishing contact body (77) and the lower floating grinding and polishing contact body (74) are rollers rotatably mounted on the upper floating arm (78) and the lower floating arm (75).
4. The grinding and polishing blade air inlet and outlet edge device according to claim 3, wherein the upper floating grinding and polishing contact body (77) and the lower floating grinding and polishing contact body (74) have adhesive paper attached to their surfaces.
5. The grinding and polishing blade air inlet and outlet edge device according to claim 4, wherein the abrasive belt (5) is a textured soft back-based abrasive belt or a thin film back-based abrasive belt.
6. The grinding and polishing blade air inlet and outlet edge device according to claim 1, wherein the upper floating arm floating proportion cylinder (79) and the lower floating arm floating proportion cylinder (73) are rotatably connected with the grinding and polishing frame (711).
7. grinding and polishing blade air inlet and outlet edge device according to claim 1, wherein the belt drive motor (3) is a servo motor.
8. The grinding and polishing blade air inlet and outlet edge device according to claim 1, wherein the camshaft drive motor (710) is a variable frequency motor or a servo motor.
Technical Field
The invention relates to the technical field of blade processing, in particular to types of equipment for grinding and polishing air inlet and outlet edges of blades.
Background
At present, the technical requirements and quality requirements of the industry of blades (such as blades of equipment of gas turbines, steam turbines, fans, energy sources, wind power and the like) are higher and higher, the final machining procedures are blade grinding and polishing, most of domestic blade enterprises adopt automatic grinding and polishing in manual grinding and polishing and international blade enterprises, and in the market, the equipment and the process which can realize high-efficiency, stable and reliable grinding and polishing of air inlet and exhaust edges and have stable quality are few.
In the industry, the grinding and polishing of the air inlet and outlet edges of the blade mainly comprises two processing modes of manual grinding, robot or five-axis automatic grinding and the like.
The blade has very high requirement on the profile precision of each section of an inlet and outlet gas edge, for example, the precision of each section of a finished blade of an aircraft engine basically requires +/-0.02- +/-0.05 mm, and the grinding allowance left in the previous working procedure is different due to different industries such as steam turbines, gas turbines and the like. If the air inlet and outlet edges of the blade are processed in the previous process, after the milling by a ball-end milling cutter, the wave crests and the wave troughs among cutter tracks are processed within an error precision range, and the required roughness needs to be polished according to the process requirements.
The requirement on the grinding and polishing process is high, manual grinding and polishing are carried out, an operator polishes on rotary polishing abrasive materials or polishes the air inlet and outlet edges by holding abrasive band paper, the sanding is carried out by the personal experience of the sander, the working state is different due to different physical conditions of each person, the defect is that slight negligence of action in actual production is possible to cause ultra-poor sanding, the is poor in maintaining the accuracy of the air inlet and outlet edges, and the efficiency is not high.
The automatic equipment is used for polishing the air inlet and outlet edges, most of the automatic equipment is used for polishing in a suspended abrasive belt and a grinding wheel with high hardness, and the circular arc is approximated by a circular arc indexing track. The programming of the equipment is complicated because the thicknesses of the air inlet and outlet edges at the upper, middle and lower parts of the blade body are different. The defects of the mode are that the debugging time of the polishing program is long when air enters and exits; meanwhile, the phenomenon of out-of-tolerance due to the fact that a certain part on the cambered surface of the air inlet and outlet edge is abraded more and precision damage is caused exists.
The polishing wheel for polishing the air inlet and outlet edges of the blade, such as CN 202219460U, is bonded by two pieces of round abrasive band paper on non-grinding surfaces, strung by a rod-shaped tool, fixing the end part, and being capable of being arranged on various power heads to clamp, grind and polish the air inlet and outlet edges of the blade.
Disclosure of Invention
The invention aims to provide equipment for grinding and polishing the air inlet and outlet edges of a blade, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
grinding and polishing blade air inlet and exhaust edge equipment, which comprises a frame, an abrasive belt driving motor, a frame base and a floating grinding and polishing assembly, wherein the floating grinding and polishing assembly comprises a floating frame, a frame floating proportion cylinder, a lower floating arm floating proportion cylinder, a lower floating grinding and polishing contact body, a lower floating arm, a floating arm hinge, an upper floating grinding and polishing contact body, an upper floating arm, an upper floating proportion cylinder, a camshaft driving motor, a grinding and polishing frame, a linear bearing rod and a linear bearing sleeve, wherein the frame floating proportion cylinder is fixedly arranged on the floating frame, the end of the cylinder rod of the frame floating proportion cylinder is fixedly connected with the frame base, the floating frame is slidably arranged on the frame base, the grinding and polishing frame is fixedly connected with the linear bearing rod, the linear bearing rod is movably arranged in the linear bearing sleeve, the camshaft driving motor is arranged on the floating frame, the output shaft of the camshaft driving motor is connected to the camshaft, and a cam groove matched with the camshaft is arranged;
the upper floating arm and the lower floating arm are rotatably connected with the grinding and polishing rack, and an upper floating arm floating proportion cylinder and a lower floating arm floating proportion cylinder are respectively arranged above and below the upper floating arm and the lower floating arm on the grinding and polishing rack; and the end parts of the upper floating arm and the lower floating arm are respectively provided with an upper floating grinding and polishing contact body and a lower floating grinding and polishing contact body.
According to the scheme of the invention in step , abrasive belts are respectively wound on the end surfaces of the abrasive belt driving motor, the abrasive belt tensioning wheel, the upper floating grinding and polishing contact body and the lower floating grinding and polishing contact body.
According to a further embodiment of the present invention at step , the upper floating abrasive polishing contact body and the lower floating abrasive polishing contact body are rollers rotatably mounted on the upper floating arm and the lower floating arm.
According to the invention, in step , the surfaces of the upper floating grinding and polishing contact body and the lower floating grinding and polishing contact body are adhered with adhesive paper.
According to the scheme of step , the abrasive belt is a suede soft back-base abrasive belt or a thin film back-base abrasive belt.
According to the scheme of steps of the invention, the floating proportion cylinder of the upper floating arm and the floating proportion cylinder of the lower floating arm are rotationally connected with the grinding and polishing machine frame.
According to the scheme of step of the invention, the belt drive motor is a servo motor.
According to the scheme of step of the invention, the camshaft driving motor is a variable frequency motor or a servo motor.
Compared with the prior art, the invention has the beneficial effects that:
1) the adjustable floating constant pressure grinding and polishing device has stable grinding and polishing performance, the adjustable floating constant pressure of the cylinder is applied to the sand belts wrapped in the front, the upper and the lower parts, adjustable equal constant pressure grinding is formed on each circular arc section on the instant section of the whole air inlet and exhaust edge, each circular arc section of the air inlet and exhaust edge is uniformly ground and polished, and the performance is stable and reliable;
2) the grinding and polishing efficiency is high, the programmable grinding strength can be realized due to the adjustable frequency of the left-right reciprocating motion and the adjustable floating pressure of the abrasive belt package, and the programmable grinding strength is simple due to the adjustable speed of the automatic actuating mechanism from the air inlet and exhaust side end to the other end;
3) the self-sharpening performance of the abrasive belt is approximately constant at the maximum in the grinding environment, blades can be lifted up after a grinding and polishing track section with any length of edges is achieved, and the abrasive belt driving motor drives the abrasive belt to polish the feeding of the section part with a self-defined line length, so that the self-sharpening performance is constant during grinding and polishing;
4) compared with the grinding and polishing of the air inlet and outlet edges at the present stage, the grinding and polishing blade of the equipment has high profile precision of the air inlet and outlet edges, no connecting trace between surface areas and no excessive smoothness; the roughness value of each part is stable; the gas inlet and outlet edges are smoothly connected and transited with the tangent point of the switching R, and the effect is obvious;
5) can realize the high-quality automatic grinding and polishing of the stable and controllable air inlet and outlet edges of the blade.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the floating grinding and polishing assembly of the present invention in directions.
FIG. 3 is a schematic view of the floating grinding and polishing assembly of the present invention in another orientations.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only partial embodiments of of the present invention, rather than all embodiments.
Referring to fig. 1 to 3, in the embodiment of the present invention, apparatuses for grinding and polishing air inlet and outlet edges of a blade include a frame 1, a protective cover 2, an abrasive
the upper
the ends of the upper floating
The abrasive
The surfaces of the upper floating grinding and polishing
It will thus be seen that the embodiments are illustrative and not restrictive in any respect point of view, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment contains independent technical solutions, and such description of the description is only for clarity, and those skilled in the art should take the description as as a whole, and the technical solutions in the respective embodiments may be combined appropriately to form other embodiments that those skilled in the art can understand.
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