A slot wedge processing positioning device and use method thereof

Abstract

The present invention discloses a slot wedge processing positioning device and a method for using the same. The slot wedge processing positioning device comprises a milling profile sequence positioning fixture for positioning the slot wedge during milling profile processing and a matching milling sequence positioning fixture for positioning the slot wedge during matching milling processing. The present invention solves the problems of the prior art that the slot wedge full sequence automatic processing cannot be realized and the production efficiency is low.

Description

Technical Field

[0001] The invention relates to the technical field of steam turbine generators, and in particular to a slot wedge processing and positioning device and a use method thereof. Background Art

[0002] Rotor slot wedges (hereinafter referred to as slot wedges) are the core assembly components of large steam turbine generators. They mainly play the role of ventilation and heat dissipation and stabilizing the rotor structure. They are widely used in 300MW, 600MW, 1000MW and other steam turbine generator models. They have an important impact on the smooth, safe and efficient operation of the units and have great economic value.

[0003] In the existing technology, slot wedge processing is mainly based on single-machine CNC processing, and customized special tooling or vises are used for clamping and positioning. Human participation is still required in many links such as loading, positioning, clamping, loosening, material removal and inter-sequence transfer. The amount of repetitive labor is large, which can easily cause human fatigue and man-made quality accidents. There are also phenomena such as low inter-sequence transfer efficiency and backward production methods.

[0004] In her paper "Application of Slot Wedge Milling in Machining Centers", Liu Yalan proposed a milling device for slot wedge processing, which solved the problems of partial process concentration and tooling compatibility of multiple varieties of slot wedges, but did not realize the automatic positioning and clamping technology of tooling for automatic loading and unloading of slot wedges.

[0005] In view of the shortcomings of existing technologies, there is an urgent need to study a digitally controlled clamping and positioning method and device that is adapted to the requirements of automatic loading and unloading, so as to realize full-sequence automated processing of slot wedges, improve the existing production model, and improve production efficiency. Summary of the invention

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a slot wedge processing positioning device and a method of using the same, which solves the problems of the prior art that the slot wedge cannot be fully automated in processing and the production efficiency is low.

[0007] The technical solution adopted by the present invention to solve the above problems is:

[0008] A slot wedge processing positioning device comprises a milling shape sequence positioning fixture used for positioning the slot wedge during milling shape processing and a matching milling sequence positioning fixture used for positioning the slot wedge during matching milling processing.

[0009] By using the milling shape sequence positioning fixture and the matching milling sequence positioning fixture, in cooperation with respective machining centers, in a slot wedge machining positioning device of the present invention, the slot wedge machining that requires the slot wedge (i.e. the workpiece to be processed) to be milled shape and matched milled can be completed in full sequence. Thus, the slot wedge full sequence automatic machining is realized, and the full sequence slot wedge machining positioning and clamping automatic action that meets the requirements of automatic loading and unloading is realized, which improves the existing production mode, improves the production efficiency, and ensures the processing quality of the slot wedge products.

[0010] As a preferred technical solution, it also includes a milling hole sequence positioning fixture for positioning the slot wedge during milling hole processing.

[0011] By using the positioning fixture for milling the outer shape sequence, the positioning fixture for milling the matching sequence, and the positioning fixture for milling the curved hole sequence, in cooperation with respective machining centers, in a slot wedge machining positioning device of the present invention, the slot wedge machining that requires the slot wedge to be milled and processed can be completed in full sequence, thereby further improving the degree of automation, further improving the production efficiency, and further ensuring the processing quality of the slot wedge products.

[0012] As a preferred technical solution, the milling process positioning fixture includes a positive position fixture and a reverse position fixture that cooperate with each other.

[0013] The positive station fixture and the reverse station fixture cooperate with each other. After the machine tool automatically runs the processing program to complete the cutting of the processing part of the slot wedge on the positive station, the semi-finished slot wedge is placed in the reverse station to complete the positioning and clamping actions, and then the processing part of the reverse station is cut to complete the processing content of the milling shape sequence. Specifically, the reverse station can be set to clamp and process the parts that cannot be completed in the positive station. This makes it easier to position the slot wedge.

[0014] As a preferred technical solution, the main working position fixture includes a first fixture base plate for placing the slot wedge, a first lateral positioning block, a first lateral clamping mechanism, and a first pressing mechanism. The first lateral positioning block, the first lateral clamping mechanism, and the first pressing mechanism are all arranged above the first fixture base plate. The first lateral positioning block and the first lateral clamping mechanism are used to cooperate with each other to position the two side surfaces of the slot wedge. The first pressing mechanism can press the slot wedge down to the first fixture base plate and move it to a position convenient for milling the slot wedge.

[0015] Such a structure positions the two side surfaces of the slot wedge and can press the slot wedge down to close to the first fixture base plate, thereby facilitating the positioning of the slot wedge at the alignment station to achieve milling of the slot wedge.

[0016] As a preferred technical solution, the counter-station fixture includes a second fixture base plate, a first end positioning block, a first end clamping mechanism, a second lateral positioning block, a second lateral clamping mechanism, and a second pressing mechanism. The first end positioning block, the first end clamping mechanism, the second lateral positioning block, the second lateral clamping mechanism, and the second pressing mechanism are all arranged above the second fixture base plate. The first end positioning block and the first end clamping mechanism are used to cooperate with each other to position the two end surfaces of the slot wedge, the second lateral positioning block and the second lateral clamping mechanism are used to cooperate to position the two side surfaces of the slot wedge, and the second pressing mechanism can press the slot wedge down to the second fixture base plate and move it to a position convenient for milling the slot wedge.

[0017] Such a structure positions the two end faces of the slot wedge and the two side faces of the slot wedge, and can press the slot wedge down to close to the second fixture base plate, thereby facilitating the positioning of the slot wedge at the counter-station to achieve milling of the slot wedge.

[0018] As a preferred technical solution, the milling sequence positioning fixture includes a third fixture base plate, a third pressing mechanism, a third lateral clamping mechanism, and a positioning block. The third pressing mechanism, the third lateral clamping mechanism, and the positioning block are all arranged on the third fixture base plate. The positioning block is used to position the slot wedge. The third lateral clamping mechanism can move in a direction close to or away from the slot wedge to clamp the slot wedge. The third pressing mechanism can press the slot wedge down and close to the third fixture base plate and move it to a position convenient for milling the slot wedge.

[0019] Such a structure can position the slot wedge to be milled, which is convenient for positioning the slot wedge to achieve milling processing of the slot wedge. Preferably, the third lateral clamping mechanism can rotate, so as to make room for processing.

[0020] As a preferred technical solution, the milling bent hole sequence positioning fixture includes a fourth fixture base plate, a rotating table, a second end positioning block, a second end clamping mechanism, a third lateral positioning block, and a third lateral clamping mechanism. The second end positioning block, the second end clamping mechanism, the third lateral positioning block, and the third lateral clamping mechanism are all arranged above the fourth fixture base plate. The side of the fourth fixture base plate is connected to the rotating table, and the rotating table can drive the fourth fixture base plate to rotate. The second end positioning block and the second end clamping mechanism are used to cooperate with each other to position the two end surfaces of the slot wedge, and the third lateral positioning block and the third lateral clamping mechanism are used to cooperate to position the two side surfaces of the slot wedge.

[0021] Such a structure positions the two end faces of the slot wedge and the two side faces of the slot wedge, making it easy to position the slot wedge so as to realize the milling and bending hole processing of the slot wedge.

[0022] The method for using the slot wedge processing positioning device comprises the following steps:

[0023] S1, using a milling profile positioning fixture to perform milling profile processing and positioning of the slot wedge;

[0024] S2, use the milling sequence positioning fixture to position the slot wedge during milling processing.

[0025] By using the milling shape sequence positioning fixture and the matching milling sequence positioning fixture, in cooperation with respective machining centers, in a slot wedge machining positioning device of the present invention, slot wedge machining that requires milling shape machining and matching milling machining can be completed in full sequence. Thus, full sequence automated machining of slot wedges is realized, and fully sequenced slot wedge machining positioning and clamping automated actions that meet the requirements of automatic loading and unloading are realized, which improves the existing production mode, improves production efficiency, and ensures the processing quality of slot wedge products.

[0026] As a preferred technical solution, the following steps are also included between step S1 and step S2:

[0027] K1, use the milling hole positioning fixture to perform milling hole processing on the slot wedge.

[0028] By using the positioning fixture for milling the outer shape sequence, the positioning fixture for milling the matching sequence, and the positioning fixture for milling the curved hole sequence, in cooperation with respective machining centers, in a slot wedge machining positioning device of the present invention, the slot wedge machining that requires the slot wedge to be milled and processed can be completed in full sequence, thereby further improving the degree of automation, further improving the production efficiency, and further ensuring the processing quality of the slot wedge products.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] (1) The present invention utilizes a milling shape sequence positioning fixture and a matching milling sequence positioning fixture, in cooperation with respective machining centers, in a slot wedge machining positioning device of the present invention, it is possible to complete the slot wedge machining that requires the slot wedge (i.e., the workpiece to be machined) to be subjected to milling shape machining and matching milling machining in full sequence; thereby achieving full sequence automated machining of the slot wedge, achieving full sequence slot wedge machining positioning and automated clamping actions that meet the requirements of automatic loading and unloading, improving the existing production mode, improving production efficiency, and ensuring the processing quality of the slot wedge products;

[0031] (2) By using the positioning fixture for milling the outer shape sequence, the positioning fixture for milling the matching sequence, and the positioning fixture for milling the bent hole sequence, in cooperation with respective machining centers, in a slot wedge machining positioning device of the present invention, the slot wedge machining that requires the slot wedge to be milled and processed with bent holes can be completed in full sequence; thereby further improving the degree of automation, further improving production efficiency, and further ensuring the processing quality of the slot wedge products;

[0032] (3) The positive station fixture and the reverse station fixture cooperate with each other. After the machine tool automatically runs the processing program to complete the cutting of the processing part of the slot wedge on the positive station, the semi-finished slot wedge is placed in the reverse station to complete the positioning and clamping actions, and then the cutting of the processing part of the reverse station is started to complete the processing content of the milling shape sequence. Specifically, the reverse station can be set to clamp and process the parts that cannot be completed in the positive station. This makes it easier to position the slot wedge;

[0033] (4) Positioning the two side surfaces of the slot wedge and pressing the slot wedge down to close to the first fixture base plate facilitates positioning of the slot wedge at the alignment station to achieve milling of the slot wedge;

[0034] (5) Positioning the two end faces of the slot wedge and the two side faces of the slot wedge, so that the slot wedge can be pressed down to be close to the second fixture base plate, so as to facilitate positioning of the slot wedge at the counter-station to achieve milling of the slot wedge;

[0035] (6) Positioning the slot wedge to be milled, so as to facilitate the positioning of the slot wedge and realize the milling of the slot wedge;

[0036] (7) Positioning the two end faces of the slot wedge and the two side faces of the slot wedge facilitates the positioning of the slot wedge to achieve milling and bending hole processing of the slot wedge. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of the positive station fixture of the milling profile positioning fixture of the present invention;

[0038] Figure 2 It is a structural schematic diagram of the counter-station fixture of the milling profile positioning fixture of the present invention;

[0039] Figure 3 It is a structural schematic diagram of the milling sequence positioning fixture of the present invention;

[0040] Figure 4 It is a structural schematic diagram of the positioning fixture for milling bent holes according to the present invention;

[0041] Figure 5 It is a structural schematic diagram of a slot wedge flexible processing unit with the slot wedge processing positioning device described in the present invention.

[0042] Markings and corresponding parts names in the accompanying drawings: 1. Milling contour sequence positioning fixture, 2. Matching milling sequence positioning fixture, 3. Milling bent hole sequence positioning fixture, 111. First fixture base plate, 112. First lateral positioning block, 113. First lateral clamping mechanism, 114. First pressing mechanism, 121. Second fixture base plate, 122. First end positioning block, 123. First end clamping mechanism, 124. Second lateral positioning block, 125. Second lateral clamping mechanism, 126. Second pressing mechanism, 21. Third fixture base plate, 22. Third pressing mechanism, 23. Third lateral clamping mechanism, 24. Positioning block, 31. Fourth fixture base plate, 32. Rotating table, 33. Second end positioning block, 34. Second end clamping mechanism, 35. Third lateral positioning block, 36. Third lateral clamping mechanism. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0044] It is worth noting that in Figure 1 to Figure 3 In the figure, the marked motion trajectories respectively represent the motion trajectories of the first pressing mechanism 114, the second pressing mechanism 126, and the third pressing mechanism 22 when they approach or leave the slot wedge (ie, the workpiece to be processed).

[0045] Example 1

[0046] like Figures 1 to 5 As shown, a slot wedge processing positioning device includes a milling sequence positioning fixture 1 for positioning the slot wedge during milling processing and a matching milling sequence positioning fixture 2 for positioning the slot wedge during matching milling processing.

[0047] By using the milling shape sequence positioning fixture 1 and the matching milling sequence positioning fixture 2, in cooperation with respective machining centers, in a slot wedge machining positioning device of the present invention, slot wedge machining that requires milling shape machining and matching milling machining of the slot wedge (i.e., the workpiece to be machined) can be completed in full sequence. Thus, full sequence automated machining of the slot wedge is realized, and full sequence slot wedge machining positioning and clamping automated actions that meet the requirements of automatic loading and unloading are realized, the existing production mode is improved, the production efficiency is improved, and the processing quality of the slot wedge products is guaranteed.

[0048] As a preferred technical solution, it also includes a milling hole sequence positioning fixture 3 for positioning the slot wedge during milling hole processing.

[0049] By using the milling shape sequence positioning fixture 1, the matching milling sequence positioning fixture 2, and the milling curved hole sequence positioning fixture 3, in cooperation with respective machining centers, in a slot wedge machining positioning device of the present invention, slot wedge machining that requires milling curved holes on the slot wedge can also be completed in full sequence, thereby further improving the degree of automation, further improving production efficiency, and further ensuring the processing quality of slot wedge products.

[0050] As a preferred technical solution, the milling process positioning fixture 1 includes a positive position fixture and a reverse position fixture that cooperate with each other.

[0051] The positive station fixture and the reverse station fixture cooperate with each other. After the machine tool automatically runs the processing program to complete the cutting of the processing part of the slot wedge on the positive station, the semi-finished slot wedge is placed in the reverse station to complete the positioning and clamping actions, and then the processing part of the reverse station is cut to complete the processing content of the milling shape sequence. Specifically, the reverse station can be set to clamp and process the parts that cannot be completed in the positive station. This makes it easier to position the slot wedge.

[0052] As a preferred technical solution, the working position fixture includes a first fixture base plate 111 for placing the slot wedge, a first lateral positioning block 112, a first lateral clamping mechanism 113, and a first pressing mechanism 114. The first lateral positioning block 112, the first lateral clamping mechanism 113, and the first pressing mechanism 114 are all arranged above the first fixture base plate 111. The first lateral positioning block 112 and the first lateral clamping mechanism 113 are used to cooperate with each other to position the two sides of the slot wedge. The first pressing mechanism 114 can press the slot wedge down to the first fixture base plate 111 and move it to a position convenient for milling the slot wedge.

[0053] Such a structure positions the two side surfaces of the slot wedge and can press the slot wedge down to fit tightly against the first fixture base plate 111, thereby facilitating the positioning of the slot wedge at the alignment station to achieve milling of the slot wedge.

[0054] As a preferred technical solution, the counter-station fixture includes a second fixture base plate 121, a first end positioning block 122, a first end clamping mechanism 123, a second lateral positioning block 124, a second lateral clamping mechanism 125, and a second pressing mechanism 126. The first end positioning block 122, the first end clamping mechanism 123, the second lateral positioning block 124, the second lateral clamping mechanism 125, and the second pressing mechanism 126 are all arranged above the second fixture base plate 121. The first end positioning block 122 and the first end clamping mechanism 123 are used to cooperate with each other to position the two end surfaces of the slot wedge. The second lateral positioning block 124 and the second lateral clamping mechanism 125 are used to cooperate to position the two side surfaces of the slot wedge. The second pressing mechanism 126 can press the slot wedge down to the second fixture base plate 121 and move it to a position convenient for milling the slot wedge.

[0055] Such a structure positions the two end faces of the slot wedge and the two side faces of the slot wedge, and can press the slot wedge down to close to the second fixture base plate 121, so as to facilitate the positioning of the slot wedge at the counter-station to realize the milling shape processing of the slot wedge.

[0056] As a preferred technical solution, the milling sequence positioning fixture 2 includes a third fixture base plate 21, a third pressing mechanism 22, a third lateral clamping mechanism 23, and a positioning block 24. The third pressing mechanism 22, the third lateral clamping mechanism 23, and the positioning block 24 are all arranged on the third fixture base plate 21. The positioning block 24 is used to position the slot wedge. The third lateral clamping mechanism 23 can move in a direction close to or away from the slot wedge to clamp the slot wedge. The third pressing mechanism 22 can press the slot wedge down and close to the third fixture base plate 21 and move it to a position convenient for milling the slot wedge.

[0057] Such a structure can position the slot wedge to be milled, which is convenient for positioning the slot wedge to realize the milling process of the slot wedge. Preferably, the third lateral clamping mechanism 23 can rotate, so as to make room for processing.

[0058] As a preferred technical solution, the milling bent hole sequence positioning fixture 3 includes a fourth fixture base plate 31, a rotating table 32, a second end positioning block 33, a second end clamping mechanism 34, a third lateral positioning block 35, and a third lateral clamping mechanism 36. The second end positioning block 33, the second end clamping mechanism 34, the third lateral positioning block 35, and the third lateral clamping mechanism 36 are all arranged above the fourth fixture base plate 31, and the side of the fourth fixture base plate 31 is connected to the rotating table 32, and the rotating table 32 can drive the fourth fixture base plate 31 to rotate, the second end positioning block 33 and the second end clamping mechanism 34 are used to cooperate with each other to position the two end surfaces of the slot wedge, and the third lateral positioning block 35 and the third lateral clamping mechanism 36 are used to cooperate to position the two side surfaces of the slot wedge.

[0059] Such a structure positions the two end faces of the slot wedge and the two side faces of the slot wedge, making it easy to position the slot wedge so as to realize the milling and bending hole processing of the slot wedge.

[0060] Example 2

[0061] like Figures 1 to 5 As shown, as a further optimization of Example 1, this embodiment includes all the technical features of Example 1. In addition, this embodiment also includes the following technical features:

[0062] The method for using the slot wedge processing positioning device comprises the following steps:

[0063] S1, using the milling profile positioning fixture 1 to perform milling profile processing and positioning on the slot wedge;

[0064] S2, using the milling sequence positioning fixture 2 to position the slot wedge during milling processing.

[0065] By using the milling shape sequence positioning fixture 1 and the matching milling sequence positioning fixture 2, in cooperation with respective machining centers, in a slot wedge machining positioning device of the present invention, slot wedge machining that requires milling shape machining and matching milling machining of the slot wedge can be completed in full sequence. Thus, full sequence automated machining of the slot wedge is realized, and full sequence slot wedge machining positioning and clamping automated actions that meet the requirements of automatic loading and unloading are realized, the existing production mode is improved, the production efficiency is improved, and the processing quality of the slot wedge products is guaranteed.

[0066] As a preferred technical solution, the following steps are also included between step S1 and step S2:

[0067] K1, use the milling hole positioning fixture 3 to perform milling hole processing on the slot wedge.

[0068] By using the milling shape sequence positioning fixture 1, the matching milling sequence positioning fixture 2, and the milling curved hole sequence positioning fixture 3, in cooperation with respective machining centers, in a slot wedge machining positioning device of the present invention, slot wedge machining that requires milling curved holes on the slot wedge can also be completed in full sequence, thereby further improving the degree of automation, further improving production efficiency, and further ensuring the processing quality of slot wedge products.

[0069] Example 3

[0070] like Figures 1 to 5 As shown, this embodiment includes all the technical features of Embodiment 1 and Embodiment 2. Based on Embodiment 1 and Embodiment 2, this embodiment provides a more detailed implementation method.

[0071] A slot wedge processing positioning device includes: a set of milling shape sequence positioning fixtures (including positive and negative positions), a set of milling curved hole sequence positioning fixtures and a set of matching milling sequence positioning fixtures, a total of 3 sets of fixtures to form an automatic positioning device system. Among them, the 3 sets of automatic fixtures correspond to 3 machining centers one by one and are used in conjunction with each other.

[0072] The milling contour sequence positioning fixture includes two clamping stations, the positive station (side A) is used to clamp and process the first side; the reverse station (side B) is used to clamp and process the part that cannot be completed by the positive station.

[0073] The milling shape sequence positioning fixture adopts a modular design and can be compatible with the clamping and pressing of various slot wedge workpieces of different widths by switching the standard chuck module. The milling shape sequence positioning fixture includes a positive position fixture and a reverse position fixture that are used in conjunction with each other, wherein the positive position fixture mainly includes the following components: a first fixture base plate 111, a first lateral positioning block 112, a first lateral clamping mechanism 113, a first pressing mechanism 114, a PLC control element, a hydraulic device, a pneumatic device, an airtightness detection device, etc.

[0074] A milling process positioning fixture adopts a modular design. The counter-station fixture includes: a second fixture base plate 121, a first end positioning block 122, a first end clamping mechanism 123, a second lateral positioning block 124, a second lateral clamping mechanism 125, a second pressing mechanism 126, a PLC control element, a hydraulic device, a pneumatic device, an airtight detection device, etc.

[0075] A milling profile positioning fixture, the use steps are as follows:

[0076] 1. Place the blank (aluminum alloy, stainless steel, copper alloy) with a specification of about 203×68×40 into the milling shape sequence alignment station (2 pieces) in a loose state;

[0077] 2. The machine tool issues a command and communicates with the PLC to control the hydraulic clamping device and the pneumatic ejector device to complete the positioning and clamping of the blank at the positive station;

[0078] 3. After the machine tool automatically runs the processing program to complete the cutting of the processing part of the workpiece on the positive station, the semi-finished workpiece is placed in the reverse station to complete the positioning and clamping actions, and then the cutting of the processing part of the reverse station is started to complete the processing content of the milling shape sequence.

[0079] 4. The subsequent forward and reverse workstations can clamp the blanks and semi-finished products at the same time, forming an assembly line operation.

[0080] Process description: There are generally two process routes: one is milling the outer shape - milling the curved hole - milling the side; the other is milling the outer shape - milling the side.

[0081] The main control console issues a command, and the industrial robot and machine tool cooperate to place the rectangular slot wedge blank material on the open milling position. The PLC controls the automatic fixture to complete closing actions such as lateral positioning, lateral clamping, and rotation and pressing. After milling, the automatic fixture is reopened, and the robot takes out the processed part and places it on the reverse position. The PLC controls the automatic fixture to complete closing actions such as end positioning and clamping, lateral positioning and clamping, rotation and pressing, and resetting. Then take another blank material and place it on the positive position. The workpieces on the positive and reverse positions are completed in sequence, completing a work cycle.

[0082] The automatic fixture for milling contour is equipped with a pneumatic rotary pressing mechanism, which is used to make the workpiece and blank fit tightly with the bottom support surface when placed on the positive and negative stations. An airtight detection is set on the contact surface between the bottom surface of the workpiece and the fixture to ensure that the workpiece clamping position is accurate and reliable.

[0083] The automatic fixture for milling bent holes adopts a modular design and is compatible with the processing of slot wedge products of different widths and different models, including: a fourth fixture base plate 31, a rotating table 32, a second end positioning block 33, a second end clamping mechanism 34, a third lateral positioning block 35, a third lateral clamping mechanism 36, a PLC control element, a hydraulic device, an airtightness detection device, etc.

[0084] The automatic fixture for milling bent holes is used in the following steps:

[0085] 1. Place the slot wedge semi-finished parts completed on the milling shape sequence fixture into the workstation of the milling bent hole fixture (2 pieces), send instructions through the machine tool, communicate with the PLC to control the hydraulic and pneumatic devices, and complete the positioning and clamping of the blank by the automatic fixture.

[0086] 2. The machine tool automatically runs the processing program, controls the rotary indexing table, completes the processing of slot wedge workpieces at multiple angles, and finally completes the processing of the curved hole parts on the slot wedge products.

[0087] The main control console issues a command, and with the cooperation of the industrial robot, the clamping claws, and the machine tool, the semi-finished workpiece with the milled shape sequence is placed in the open automatic fixture station, and the automatic fixture is controlled by the PLC to complete the end positioning and clamping, lateral positioning and clamping, airtightness detection and other closing actions. After the processing is completed, the above actions are completed in reverse, and the robot takes out the workpiece to complete a working cycle.

[0088] The automatic fixture for milling sequence adopts modular design, including: fixture body, hydraulic rotary pressing device, positioning element, hydraulic device, airtight detection device, etc.

[0089] The use steps of the automatic fixture for milling sequence are as follows: the main control console issues a command, and with the cooperation of the industrial robot, the clamping claws and the machine tool, the processed semi-finished workpiece is placed in the automatic fixture station in the open state, and the automatic fixture is controlled by the PLC to automatically clamp the workpiece, and then the milling process is carried out.

[0090] The present invention designs an automatic tooling system for automatic loading and unloading of slot wedge processing, namely an automatic positioning device, including an automatic fixture for milling contours, an automatic fixture for milling bent holes, and an automatic fixture for matching milling sequences; an automatic positioning method using a combination of a PLC control, a hydraulic device and a pneumatic device is proposed; the loading and unloading of slot wedge processing machines and the automation of material movement between sequences and between machine tools are realized; and production efficiency is improved.

[0091] The present invention proposes a fixture structure including a fixture body, a positioning element, a clamping element, a spinning mechanism, an airtightness detection device, a hydraulic system, and a pneumatic system, which realizes automatic processing of slot wedges and automated clamping and positioning actions without human intervention in the loading and unloading process, greatly improving production efficiency and saving production costs.

[0092] As described above, the present invention can be preferably implemented.

[0093] All features disclosed in all embodiments in this specification, or steps in all methods or processes implicitly disclosed, except for mutually exclusive features and / or steps, can be combined and / or expanded or replaced in any manner.

[0094] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. According to the technical essence of the present invention, within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the present invention.

Claims

1. A slot wedge processing positioning device, characterized in that: It comprises a milling shape sequence positioning fixture (1) for positioning the slot wedge when milling the shape, and a matching milling sequence positioning fixture (2) for positioning the slot wedge when matching milling. The milling profile positioning fixture (1) adopts a modular design; It also includes a milling bent hole sequence positioning fixture (3) for positioning the slot wedge during the milling bent hole processing; The milling process positioning fixture (1) comprises a positive position fixture and a reverse position fixture used in conjunction with each other; The main working position fixture comprises a first fixture base plate (111) for placing the slot wedge, a first lateral positioning block (112), a first lateral clamping mechanism (113), and a first pressing mechanism (114); the first lateral positioning block (112), the first lateral clamping mechanism (113), and the first pressing mechanism (114) are all arranged above the first fixture base plate (111); the first lateral positioning block (112) and the first lateral clamping mechanism (113) are used to cooperate with each other to position the two side surfaces of the slot wedge; the first pressing mechanism (114) can press the slot wedge down to the first fixture base plate (111) and move it to a position convenient for milling the slot wedge; The counter-station fixture comprises a second fixture base plate (121), a first end positioning block (122), a first end clamping mechanism (123), a second lateral positioning block (124), a second lateral clamping mechanism (125), and a second pressing mechanism (126). The first end positioning block (122), the first end clamping mechanism (123), the second lateral positioning block (124), the second lateral clamping mechanism (125), and the second pressing mechanism (126) are all arranged above the second fixture base plate (121). The first end positioning block (122) and the first end clamping mechanism (123) are used to cooperate with each other to position the two end surfaces of the slot wedge. The second lateral positioning block (124) and the second lateral clamping mechanism (125) are used to cooperate with each other to position the two side surfaces of the slot wedge. The second pressing mechanism (126) can press the slot wedge down to the second fixture base plate (121) and move it to a position convenient for milling the slot wedge. The milling sequence positioning fixture (2) comprises a third fixture base plate (21), a third pressing mechanism (22), a third lateral clamping mechanism (23), and a positioning block (24). The third pressing mechanism (22), the third lateral clamping mechanism (23), and the positioning block (24) are all arranged on the third fixture base plate (21). The positioning block (24) is used to position the slot wedge. The third lateral clamping mechanism (23) can move in a direction close to or away from the slot wedge to clamp the slot wedge. The third pressing mechanism (22) can press the slot wedge down to the third fixture base plate (21) and move it to a position convenient for milling the slot wedge.

2. A slot wedge processing positioning device according to claim 1, characterized in that: The milling bent hole sequence positioning fixture (3) includes a fourth fixture base plate (31), a rotating table (32), a second end positioning block (33), a second end clamping mechanism (34), a third lateral positioning block (35), and a third lateral clamping mechanism (36). The second end positioning block (33), the second end clamping mechanism (34), the third lateral positioning block (35), and the third lateral clamping mechanism (36) are all arranged above the fourth fixture base plate (31). The side of the fourth fixture base plate (31) is connected to the rotating table (32), and the rotating table (32) can drive the fourth fixture base plate (31) to rotate. The second end positioning block (33) and the second end clamping mechanism (34) are used to cooperate with each other to position the two end surfaces of the slot wedge. The third lateral positioning block (35) and the third lateral clamping mechanism (36) are used to cooperate to position the two side surfaces of the slot wedge.

3. A method for using a slot wedge processing positioning device according to claim 1 or 2, characterized in that: The following steps are involved: S1, using a milling profile positioning fixture (1) to perform milling profile processing and positioning on the slot wedge; S2, using the milling sequence positioning fixture (2) to position the slot wedge during milling processing.

4. The method for using the slot wedge processing positioning device according to claim 3, characterized in that: The following steps are also included between step S1 and step S2: K1, use the milling hole positioning fixture (3) to perform milling hole processing on the slot wedge.

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