Double-station full-automatic positioning and clamping machining device for slot wedge of generator

Abstract

The utility model provides a generator slot wedge double-station full-automatic positioning and clamping machining device, which belongs to the technical field of machining and particularly comprises a bottom plate, a rough machining positioning and clamping mechanism and a finish machining positioning and clamping mechanism, the rough machining positioning and clamping mechanism and the finish machining positioning and clamping mechanism each comprise a plurality of hydraulic vises installed on the bottom plate and a plurality of pressing assemblies installed on the bottom plate, a containing table is arranged between the movable clamping ends of the hydraulic vises, and the pressing assemblies are used for pressing the slot wedges on the containing table. The hydraulic vice is used for clamping the slot wedge pressed on the placing table, and the moving assembly is used for driving the pressing assembly to move out of the machining face range of the slot wedge after the hydraulic vice clamps the slot wedge. Machining of the slot wedge can be completed on one device, manual clamping of the slot wedge is not needed, manual intervention is little, labor intensity is low, efficiency is high, clamping deformation of the hydraulic control vice is controllable, repeated positioning accuracy is high, and the finished product machining qualification rate is high.

Description

Technical Field

[0001] The present application relates to the field of mechanical processing, and in particular to a double-station fully automatic positioning and clamping processing device for generator slot wedges. Background Art

[0002] With the successful convening of the World Clean Energy Conference in Deyang in recent years, and Deyang is also an integration center for large-scale generator sets, under the leadership of Dongfang Electric, a leader in the power generation industry, the company has undertaken 80% of the processing tasks of the slot wedges of Dongfang Electric's generator rotor components. The rotor slot wedges are made of hard aluminum, with a length of 135-420mm, a thickness of 15-35mm, and a wedge-shaped structure of 40-55mm. The main function is to be installed in the fixed coil position of the generator rotor to prevent the coil from deformation and displacement. Some of the slot wedges have holes and some have oil grooves to provide channels for rotor ventilation and heat dissipation. Due to the high speed of large generator rotors, as part of the rotor component, the processing accuracy requirements are extremely high, especially those with holes and slots are more prone to deformation. In addition, each generator requires hundreds of rotor slot wedges, and the quantity demanded for each unit is large. The product delivery period is short, and the corresponding task volume cannot be completed within the specified time, and there are many specifications and models. The conventional process is as follows: blank loading - alignment - clamping (manual vise) - start the machine tool - process the front side - stop the machine tool - release (manually release the vise) - turn over the workpiece - alignment - clamping (manual vise) - process the reverse side (including holes, grooves, etc.) - stop the machine tool - release (manually release the vise) - finished product, which requires a lot of manual intervention, high labor intensity, low efficiency, large deviation during alignment, manual vise clamping can easily lead to workpiece deformation, high scrap rate, waste of a large amount of raw materials, long production cycle, and difficulty in delivery on time. Utility Model Content

[0003] In view of this, the present application provides a double-station fully automatic positioning and clamping processing device for generator slot wedges, which solves the problems in the prior art, improves processing efficiency, and reduces manual labor intensity.

[0004] The present application provides a double-station fully automatic positioning and clamping device for generator slot wedges, which adopts the following technical solutions:

[0005] A double-station fully automatic positioning and clamping processing device for a generator slot wedge comprises a base plate, a rough machining positioning and clamping mechanism and a fine machining positioning and clamping mechanism mounted on the base plate, wherein the rough machining positioning and clamping mechanism and the fine machining positioning and clamping mechanism are arranged along a first direction;

[0006] The rough machining positioning clamping mechanism and the fine machining positioning clamping mechanism both include a plurality of hydraulic vises mounted on a base plate and a plurality of clamping assemblies mounted on the base plate, the clamping ends of the plurality of hydraulic vises are aligned, a placement table for placing a slot wedge is provided between the movable clamping ends of the hydraulic vises, the clamping assembly is used to press the slot wedge onto the placement table, and the hydraulic vise is used to clamp the slot wedge pressed onto the placement table. The rough machining positioning clamping mechanism also includes a moving assembly, which is used to drive the clamping assembly to move outside the machining surface range of the slot wedge after the hydraulic vise clamps the slot wedge;

[0007] The arrangement direction of the multiple hydraulic vises of the rough machining positioning clamping mechanism and the fine machining positioning clamping mechanism is parallel to the base plate and perpendicular to the first direction.

[0008] Optionally, a double-station fully automatic positioning and clamping processing device for the generator slot wedge includes a rotary clamping cylinder and a pressure plate, wherein the rotary clamping cylinder is mounted on a base plate, and the output shaft of the rotary clamping cylinder is perpendicular to the base plate, and the output end of the rotary clamping cylinder is connected to one end of the pressure plate, and the other end of the pressure plate is used to clamp on the slot wedge, and the combined structure of the rotary clamping cylinder and the pressure plate serves as the clamping assembly and the moving assembly.

[0009] Optionally, the pressure plate includes a connecting rod and a pressure block, one end of the connecting rod is connected to the output shaft of the rotary pressing cylinder, and the pressure block is detachably mounted on the other end of the connecting rod, the pressure block is used to abut the slot wedge, and the pressure plate includes pressure blocks of multiple thicknesses.

[0010] Optionally, the rough machining positioning clamping mechanism and the fine machining positioning clamping mechanism both include multiple rotary clamping cylinders, the multiple rotary clamping cylinders of the rough machining positioning clamping mechanism are distributed along a first straight line, and the rotary clamping cylinders of the fine machining positioning clamping mechanism are distributed along a second straight line, the first straight line and the second straight line are parallel to and perpendicular to the first direction, and the hydraulic vises of the rough machining positioning clamping mechanism and the fine machining positioning clamping mechanism are located between the first straight line and the second straight line.

[0011] Optionally, the double-station fully automatic positioning and clamping processing device for the generator slot wedge also includes a top cylinder and a positioning block, which are installed on the base plate, the output shaft of the top cylinder is perpendicular to the first direction, and a top block is installed on the output end of the top cylinder, the top block is used to abut one end of the slot wedge on the placing table of the finishing positioning and clamping mechanism, and the positioning block is used to abut the other end of the slot wedge on the placing table of the finishing positioning and clamping mechanism.

[0012] Optionally, the positioning block is detachably mounted on the base plate, the top block is detachably mounted on the output shaft of the top cylinder, and the finishing positioning clamping mechanism includes positioning blocks of multiple specifications and top blocks of multiple specifications.

[0013] Optionally, the positioning block is detachably mounted on the base plate, the top block is detachably mounted on the output shaft of the top cylinder, and the finishing positioning clamping mechanism comprises positioning blocks of multiple specifications and top blocks of multiple specifications.

[0014] In summary, the present application has the following beneficial technical effects:

[0015] The processing device of the present application can complete the processing of the slot wedge on one device, without manual clamping of the slot wedge, with less manual intervention, low labor intensity, high efficiency, controllable deformation of the hydraulic control vice clamping, high accuracy of repeat positioning, and high processing qualification rate of finished products.

[0016] By replacing different pressing blocks, positioning blocks and top blocks, different types of slot wedges can be adapted, and the travel of the cylinder is adjusted when processing different slot wedges to ensure processing accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The present application is a double-station full-automatic positioning and clamping processing device for generator slot wedges.

[0019] The following describes the embodiments of the present application in detail with reference to the drawings. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below with reference to the drawings.

[0021] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0022] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0023] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0024] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples. However, one skilled in the art will appreciate that the aspects described can be practiced without these specific details.

[0025] An embodiment of the present application provides a double-station fully automatic positioning and clamping processing device for generator slot wedges.

[0026] like Figure 1The figure shows a dual-station, fully automatic positioning and clamping device for a generator slot wedge, comprising a base plate 1, a roughing positioning and clamping mechanism 2 mounted on the base plate, and a fine-machining positioning and clamping mechanism 3. The roughing positioning and clamping mechanisms 2 and 3 have identical structures and are arranged along a first direction. The slot wedge 8 includes a first flat surface 81 and a second flat surface 82. During roughing, the first flat surface 81 serves as the top surface, while during fine-machining, the second flat surface 82 serves as the top surface. The roughing positioning and clamping mechanism 2 is used to clamp the bottom of the slot wedge 8, while the fine-machining positioning and clamping mechanism 3 is used to clamp the bottom of the slot wedge 8 after roughing.

[0027] The rough machining positioning clamping mechanism 2 and the fine machining positioning clamping mechanism 3 both include a plurality of hydraulic vises 4 installed on the base plate 1 and a plurality of clamping assemblies installed on the base plate 1. The clamping ends of several of the hydraulic vises 4 are aligned, and a placement table for placing the slot wedge 8 is provided between the movable clamping ends of the hydraulic vise 4. The clamping assembly is used to press the slot wedge 8 on the placement table, and the hydraulic vise 4 is used to clamp the slot wedge 8 pressed on the placement table. The rough machining positioning clamping mechanism 2 also includes a moving assembly, which is used to drive the clamping assembly to move outside the processing surface range of the slot wedge 8 after the hydraulic vise 4 clamps the slot wedge 8.

[0028] First, the slot wedge 8 blank is placed on the placement table of the rough machining positioning clamping mechanism 2, and the pressing assembly presses the slot wedge 8 blank on the placement table. After the hydraulic vise 4 clamps the slot wedge 8, the pressing assembly is removed. The first plane 81, two side surfaces, and two end surfaces of the slot wedge 8 blank are milled. Then, the semi-finished product processed by the rough machining positioning clamping mechanism 2 is turned over and placed on the placement table of the fine machining positioning clamping mechanism 3. The pressing assembly presses the semi-finished slot wedge 8 blank. After the hydraulic vise 4 clamps the slot wedge 8, the pressing assembly is removed. The second plane 82 and two side surfaces are milled, and the hole and slot are processed. The processing device of the present application can complete the processing of the slot wedge 8 on a single device without manually clamping the slot wedge 8, with less manual intervention, low labor intensity, high efficiency, and controllable deformation of the hydraulically controlled vise with high repeatability and positioning accuracy, and a high finished product processing qualification rate.

[0029] In the embodiment of the present application, the working pressure of the hydraulic vise 4 is 2-2.7 MPa, and the clamping force of the hydraulic vise 4 is ensured by relying on an external pressure sensor to detect the hydraulic system pressure online and replenish the pressure in time; ensuring that the clamping force of the vise is uniform and reliable.

[0030] The arrangement direction of the plurality of hydraulic vises 4 of the rough machining positioning clamping mechanism 2 and the fine machining positioning clamping mechanism 3 is parallel to the base plate 1 and perpendicular to the first direction.

[0031] The generator slot wedge double-station full-automatic positioning and clamping processing device comprises a rotary pressing cylinder 5 and a pressing plate 51, the rotary pressing cylinder 5 is installed on the bottom plate 1, the output shaft of the rotary pressing cylinder 5 is perpendicular to the bottom plate 1, the output end of the rotary pressing cylinder 5 is connected with one end of the pressing plate 51, the other end of the pressing plate 51 is used for pressing on the slot wedge 8, and the combination structure of the rotary pressing cylinder 5 and the pressing plate 51 serves as the pressing assembly and the moving assembly. The working pressure of the rotary pressing cylinder 5 is 0.6-0.7 MPa, a throttle valve is arranged at the inlet of the rotary pressing cylinder 5 and the pressing cylinder, the speed of cylinder action can be adjusted through the throttle valve, and a magnetic switch is installed to detect whether the cylinder action reaches the predetermined position.

[0032] The pressing plate 51 comprises a connecting rod and a pressing block, one end of the connecting rod is connected with the output shaft of the rotary pressing cylinder 5, and the pressing block is installed on the connecting rod through bolts, the pressing block is used for abutting against the slot wedge 8, and the pressing plate 51 comprises pressing blocks with different thicknesses. Different thicknesses of the pressing blocks are replaced according to different thicknesses of the slot wedge 8, the stroke of the rotary pressing cylinder 5 does not need to be changed when the specifications of the slot wedge 8 change, and the working efficiency and pressing precision are improved.

[0033] The rotary pressing cylinder 5 is used for pressing the slot wedge 8, can ensure that the slot wedge 8 is uniformly stressed, prevents the upper and lower planes of the slot wedge 8 from being uneven due to tilting, can change the sectional area and thickness of the pressing block to adapt to the shape height of different slot wedges 8, and increases the area of the adhering surface of the workpiece and the placement table. After the rotary cylinder is loosened, the head of the rotary pressing cylinder 5 can rotate in the direction, no obstacles are kept above the workpiece, a better foundation is laid for the machining tool to provide a sufficient tool path, the workpiece can be formed at one time, and the dimensional accuracy and surface smoothness of the machining surface are ensured.

[0034] The rough machining positioning and clamping mechanism 2 and the fine machining positioning and clamping mechanism 3 each comprise a plurality of rotary pressing cylinders 5, the plurality of rotary pressing cylinders 5 of the rough machining positioning and clamping mechanism 2 are distributed along a first straight line, the rotary pressing cylinders 5 of the fine machining positioning and clamping mechanism 3 are distributed along a second straight line, the first straight line and the second straight line are parallel to each other and perpendicular to the first direction, the first straight line is parallel to the top surface of the bottom plate, and the hydraulic vice 4 of the rough machining positioning and clamping mechanism 2 and the fine machining positioning and clamping mechanism 3 is located between the first straight line and the second straight line. The hydraulic vice 4 and the rotary pressing cylinder 5 are reasonably arranged, and the occupied space of the whole device is reduced.

[0035] The double-station fully automatic positioning and clamping processing device for the generator slot wedge also includes a top cylinder 7 and a positioning block 6, which are installed on the base plate 1. The output shaft of the top cylinder 7 is perpendicular to the first direction, and a top block 71 is installed on the output end of the top cylinder 7. The top block 71 is used to abut one end of the slot wedge 8 on the placement table of the finishing positioning clamping mechanism 3, and the positioning block 6 is used to abut the other end of the slot wedge 8 on the placement table of the finishing positioning clamping mechanism 3. The top cylinder 7 drives the top block 71 to approach and move away from the end face of the slot wedge 8. When one end of the semi-finished slot wedge 8 is abutted against the positioning block 6, and then when the top cylinder 7 is extended, the top block 71 is pressed against the other end of the slot wedge 8, so that the slot wedge 8 can be quickly positioned.

[0036] The positioning block 6 is detachably mounted on the base plate 1, and the top block 71 is detachably mounted on the output shaft of the top cylinder 7. The finishing positioning clamping mechanism 3 includes positioning blocks 6 of multiple specifications and top blocks 71 of multiple specifications. Positioning blocks 6 of different specifications have different lengths in the first direction and in the direction perpendicular to the base plate 1, and top blocks 71 of different specifications have different lengths in the first direction and in the direction perpendicular to the base plate 1. By replacing the top block 71 and the positioning block 6, different types of slot wedges 8 can be adapted.

[0037] The placement table is in the shape of an elongated strip and includes a base in the shape of an elongated strip and a plurality of support blocks arranged at intervals on the base. The support blocks of the finishing positioning clamping mechanism 3 are outside the drilling range of the slot wedge 8 .

[0038] All relevant parts of this application are installed on the base plate 1 to form an integral structure, which is easy to disassemble and maintains the clamping and positioning accuracy of the tooling. The starting point of the machine tool CNC program is fixed and does not need to be repeatedly changed.

[0039] The processing device of the present application is controlled by gas-liquid linkage, with cylinder pressing and rapid positioning, hydraulic clamping, controllable clamping force, and no damage to the workpiece surface.

[0040] The processing device of the present application has high repeatability and there is no need to consider the trouble of accurately repeating the positioning of the workpiece.

[0041] The processing device of the present application can be linked with CNC machine tools and robots through PLC control to achieve robot loading and unloading. PLC logic control enables unmanned 24-hour processing of the same product, greatly saving labor costs and improving processing efficiency.

[0042] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A double-station fully automatic positioning and clamping processing device for motor slot wedges, characterized in that: It comprises a base plate (1), a rough machining positioning clamping mechanism (2) and a fine machining positioning clamping mechanism (3) mounted on the base plate (1), wherein the rough machining positioning clamping mechanism (2) and the fine machining positioning clamping mechanism (3) are arranged along a first direction; The rough machining positioning clamping mechanism (2) and the fine machining positioning clamping mechanism (3) both include a plurality of hydraulic vises (4) mounted on a base plate (1) and a plurality of clamping assemblies mounted on the base plate (1), the clamping ends of the plurality of hydraulic vises (4) being aligned, a placement table for placing a slot wedge (8) being provided between the movable clamping ends of the hydraulic vises (4), the clamping assembly being used to press the slot wedge (8) onto the placement table, the hydraulic vise (4) being used to clamp the slot wedge (8) pressed onto the placement table, the rough machining positioning clamping mechanism (2) also including a moving assembly, the moving assembly being used to drive the clamping assembly to move outside the machining surface range of the slot wedge (8) after the hydraulic vise (4) clamps the slot wedge (8); The arrangement direction of the plurality of hydraulic vises (4) of each of the rough machining positioning clamping mechanism (2) and the fine machining positioning clamping mechanism (3) is parallel to the base plate (1) and perpendicular to the first direction.

2. The double-station fully automatic positioning and clamping processing device for motor slot wedges according to claim 1 is characterized in that: A motor slot wedge double-station fully automatic positioning and clamping processing device comprises a rotary pressing cylinder (5) and a pressing plate (51), wherein the rotary pressing cylinder (5) is mounted on a base plate (1), and an output shaft of the rotary pressing cylinder (5) is perpendicular to the base plate (1), an output end of the rotary pressing cylinder (5) is connected to one end of the pressing plate (51), and the other end of the pressing plate (51) is used to press on the slot wedge (8), and a combined structure of the rotary pressing cylinder (5) and the pressing plate (51) serves as the pressing component and the moving component.

3. The double-station fully automatic positioning and clamping processing device for motor slot wedges according to claim 2 is characterized in that: The pressure plate (51) includes a connecting rod and a pressure block, one end of the connecting rod is connected to the output shaft of the rotary pressing cylinder (5), and the pressure block is detachably mounted on the other end of the connecting rod. The pressure block is used to abut against the slot wedge (8), and the pressure plate (51) includes pressure blocks of multiple thicknesses.

4. The double-station fully automatic positioning and clamping processing device for motor slot wedges according to claim 2 is characterized in that: The rough machining positioning clamping mechanism (2) and the fine machining positioning clamping mechanism (3) both comprise a plurality of rotary pressing cylinders (5), the plurality of rotary pressing cylinders (5) of the rough machining positioning clamping mechanism (2) are distributed along a first straight line, and the rotary pressing cylinders (5) of the fine machining positioning clamping mechanism (3) are distributed along a second straight line, the first straight line and the second straight line are parallel to and perpendicular to the first direction, and the hydraulic vises (4) of the rough machining positioning clamping mechanism (2) and the fine machining positioning clamping mechanism (3) are located between the first straight line and the second straight line.

5. The double-station fully automatic positioning and clamping processing device for motor slot wedges according to claim 1 is characterized in that: The motor slot wedge double-station fully automatic positioning and clamping processing device also includes a top cylinder (7) and a positioning block (6), wherein the top cylinder (7) and the positioning block (6) are mounted on a base plate (1); the output shaft of the top cylinder (7) is perpendicular to a first direction, and a top block (71) is mounted on the output end of the top cylinder (7); the top block (71) is used to abut against one end of the slot wedge (8) on the placement table of the finishing positioning clamping mechanism (3); and the positioning block (6) is used to abut against the other end of the slot wedge (8) on the placement table of the finishing positioning clamping mechanism (3).

6. The double-station fully automatic positioning and clamping processing device for motor slot wedges according to claim 5 is characterized in that: The positioning block (6) is detachably mounted on the bottom plate (1), and the top block (71) is detachably mounted on the output shaft of the top cylinder (7). The finishing positioning clamping mechanism (3) comprises positioning blocks (6) of multiple specifications and top blocks (71) of multiple specifications.

7. The double-station fully automatic positioning and clamping processing device for motor slot wedges according to claim 1 is characterized in that: The placement table is in the shape of an elongated strip and comprises an elongated base and a plurality of support blocks arranged at intervals on the base. The support blocks of the fine machining positioning clamping mechanism (3) are outside the drilling range of the slot wedge (8).

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