High-precision flange plate turning equipment

Abstract

The invention discloses high-precision flange plate turning equipment, and particularly relates to flange plate machining equipment, the high-precision flange plate turning equipment comprises a vertical lathe and a floor type machining table, the floor type machining table is provided with a driving mechanism, and the driving mechanism comprises an outer fixing disc and an inner fixing disc which are rotationally arranged; the centering mechanism comprises a centering disc coaxially butted with the inner fixed disc and a reference column arranged along the central axis of the centering disc, and the centering disc is driven to be fixed on the flange plate; and the auxiliary clamping mechanism comprises a plurality of clamping rods which are slidably connected to the outer fixing disc in a circumferential array mode. Before turning, the flange plate is fixed through the reference column and the centering disc, the centering disc is in butt joint with the inner fixing disc, the outer layer of the flange plate is turned with the reference column as the reference, and after turning, the reference column is used as the guide, the clamping rod is guided to slide for secondary clamping, so that the clamping precision of the clamping rod is improved; precision is kept in the steps of flange plate inner hole machining and thread turning, and the clamping process is convenient and fast.

Description

Technical Field

[0001] The invention relates to the technical field of flange processing, in particular to a high-precision flange turning device. Background Art

[0002] Large forged flanges are made by forging cylindrical blanks, shaping them through a ring rolling machine, and then rough-machining them through a mold. The rough-machining parts are then trimmed and threaded on a lathe.

[0003] In the prior art, when turning larger forged flanges, vertical machine tools are used for turning, and when trimming and threading the inner and outer walls, secondary clamping is usually required. Due to the influence of size and surface oxides, the axis of the first clamping, the axis of the second clamping and the axis of the machine tool are easily deviated during the clamping process, making the coaxiality of the inner and outer walls easily too large, and requiring repeated clamping. Summary of the invention

[0004] The purpose of the present invention is to provide a high-precision flange turning device to solve the above problems.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a high-precision flange turning equipment, comprising a vertical lathe and a floor-standing processing table, wherein the floor-standing processing table is respectively provided with:

[0006] A driving mechanism including an outer fixed disk and an inner fixed disk which are rotatably arranged;

[0007] A centering mechanism, comprising a centering plate coaxially docked with the inner fixed plate, and a reference column arranged along the central axis of the centering plate, wherein the centering plate is driven and fixed on the flange plate;

[0008] an auxiliary clamping mechanism, comprising a plurality of clamping rods slidably connected to the outer fixing plate in a circular array;

[0009] Wherein: a guide plate is movably arranged on the reference column, and the guide plate is driven to be vertically arranged along the axis of the reference column to guide the movement of the clamping rod.

[0010] Preferably, the centering disk is symmetrically provided with conical surfaces, and the centering disk is symmetrically provided with fixing frames along the reference column, and the fixing frames push the flange to fit the conical surfaces.

[0011] Preferably, the centering disk is symmetrically provided with conical surfaces, and the inner fixed disk is provided with a conical groove for guiding the conical surfaces.

[0012] Preferably, a push block is provided on the clamping rod, and when the push block extends out of the clamping rod, an air cavity is formed therebetween, and when the push block is retracted into the clamping rod, it is locked.

[0013] Preferably, the inner fixed disk is driven by a motor, and the outer fixed disk rotates with the inner fixed disk as the reference column is withdrawn.

[0014] Preferably, an air disk is provided on the inner fixed disk, and the guide plate starts to supply air away from the clamping rod as the air disk starts to supply air.

[0015] Preferably, a driving shaft is further included, on which a first coupling strip is provided which slides along the axis and is always coupled to the inner fixed disk. The driving shaft rebounds as the reference column is pulled out to drive the driving shaft to couple to the outer fixed disk.

[0016] Preferably, an air passage is provided on the clamping rod, and an air source is provided on the inner fixed disk. The air source inflates and pressurizes the air passage, and the push block is unlocked to extend with the push of the air pressure.

[0017] Preferably, an air guide column is provided on the air disc, a sliding air pipe slidably connected to the air guide column is provided on the guide plate, and an elastic limiting port for limiting air pressure is provided on the sliding air pipe.

[0018] Preferably, the centering disk is provided with spiral air outlets in a circular array, and the guide plate is provided with a sliding air pipe, which moves with the guide plate and is connected with the spiral air outlets.

[0019] In the above technical scheme, the present invention provides a high-precision flange turning equipment, which has the following beneficial effects: before turning, the flange is fixed by a reference column and a centering plate, and the centering plate is docked with the inner fixed plate, and the outer layer of the flange is turned with the reference column as a reference. After turning, the reference column is used as a guide to guide the clamping rod to slide for secondary clamping, thereby increasing the clamping accuracy of the clamping rod, maintaining accuracy in the steps of processing the inner hole of the flange and turning the thread, and the clamping process is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 An overall schematic diagram provided for an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of a floor-standing processing table and a centering mechanism provided in an embodiment of the present invention;

[0023] Figure 3 An exploded schematic diagram of an auxiliary clamping mechanism and a centering mechanism provided in an embodiment of the present invention;

[0024] Figure 4 An exploded schematic diagram of a reference column provided in an embodiment of the present invention;

[0025] Figure 5 An exploded schematic diagram of a centering mechanism provided in an embodiment of the present invention;

[0026] Figure 6 for Figure 5 The enlarged schematic diagram at A in the middle;

[0027] Figure 7 An exploded schematic diagram of a drive shaft provided by an embodiment of the present invention;

[0028] Figure 8 A transparent schematic diagram of a centering disk provided in an embodiment of the present invention;

[0029] Fig. 9 An exploded schematic diagram of an outer fixing plate and an inner fixing plate provided in an embodiment of the present invention;

[0030] Fig.10 A cross-sectional schematic diagram of a floor-standing processing table and a centering mechanism provided in an embodiment of the present invention;

[0031] Fig.11 for Fig.10 Enlarged diagram of the explosion at point B in the middle.

[0032] Description of reference numerals:

[0033] 1. Vertical lathe; 11. Floor-standing processing table; 110. Motor; 111. Bottom bracket; 2. Centering mechanism; 21. Centering plate; 211. Conical surface; 212. Internally threaded pipe; 213. Spiral air outlet; 214. Slide hole; 215. Butt gas ring; 22. Reference column; 221. Limiting ring; 222. Guide groove; 23. Fixing frame; 231. Stud; 24. Guide plate; 241. Swivel; 242. Spring; 3. Driving mechanism; 31. External fixing plate; 311. Slide slot; 312, coupling block; 32, inner fixed disk; 321, transmission slider; 33, drive shaft; 331, first coupling strip; 332, second coupling strip; 333, lining portion; 34, air disk; 341, air guide column; 342, elastic limiting port; 343, sliding air pipe; 4, flange; 5, auxiliary clamping mechanism; 51, clamping rod; 511, sliding portion; 512, airway; 513, guide slot; 52, push block; 53, locking head; 54, extension plate; 541, screw. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0035] like Figure 1-11 As shown, a high-precision flange turning equipment includes a vertical lathe 1 and a floor-standing processing table 11, and the floor-standing processing table 11 is respectively provided with:

[0036] The driving mechanism 3 includes an outer fixed disk 31 and an inner fixed disk 32 which are rotatably arranged;

[0037] The centering mechanism 2 includes a centering plate 21 coaxially connected to the inner fixed plate 32, and a reference column 22 arranged along the central axis of the centering plate 21. The centering plate 21 is driven and fixed on the flange 4.

[0038] The auxiliary clamping mechanism 5 comprises a plurality of clamping rods 51 slidably connected to the outer fixing plate 31 in a circular array;

[0039] Wherein: a guide plate 24 is movably arranged on the reference column 22 , and the guide plate 24 is driven to be vertically arranged along the axis of the reference column 22 to guide the movement of the clamping rod 51 .

[0040] Specifically, a base support 111 for carrying the flange 4 is provided on the floor-standing processing table 11 of the vertical lathe 1, and a motor 110 for driving the inner fixed disk 32 to rotate is provided on the base support 111. A sliding hole 214 is provided on the central axis of the centering disk 21, and the reference column 22 is slidably connected in the sliding hole 214. A guide groove 222 for limiting the guide plate 24 is provided on the reference column 22. The centering disk 21 is fixed to the flange 4 and their axes are unified. Then the reference column 22 slides into the sliding hole 214 to unify the axes of the centering disk 21, the flange 4 and the reference column 22. Then the centering disk 21 is set on the inner fixed disk 32 for turning the outer layer. After turning, the sliding clamping rod 51 slides along the restricted guide plate 24 to fit the outer layer of the flange 4 after turning, thereby achieving high-precision clamping, and the process is convenient and simple.

[0041] In the above technical scheme, before turning, the flange 4 is fixed by the reference column 22 and the centering plate 21, and the centering plate 21 is docked with the inner fixed plate 32, and the outer layer of the flange 4 is turned with the reference column 22 as the reference. After turning, the reference column 22 is used as a guide to guide the clamping rod 51 to slide for secondary clamping, thereby increasing the clamping accuracy of the clamping rod 51, maintaining accuracy in the steps of processing the inner hole of the flange 4 and turning the thread, and the clamping process is convenient and quick.

[0042] Furthermore, the centering disk 21 and the flange 4 can be fixed by a three-jaw chuck set on the centering disk 21; or by a screw connected to one end of the centering disk 21 in a circular array, and the screw is rotated to fit the flange 4 for fixing; or other fixing structures known to technical personnel in this field are also possible.

[0043] As an embodiment provided by the present invention, the centering disk 21 is symmetrically provided with conical surfaces 211 , and the centering disk 21 is symmetrically provided with fixing frames 23 along the reference column 22 , and the fixing frames 23 push the flange 4 to fit the conical surfaces 211 .

[0044] Specifically, when the conical surface 211 extends into the inner hole of the flange 4, it can play a guiding role. The centering disk 21 is provided with an internal threaded tube 212, and the fixing frame 23 is rotatably connected to the stud 231. The stud 231 is rotated along the internal threaded tube 212, and the fixing frame 23 will slide against the reference column 22, and move closer to the flange 4 with the reference column 22 as the stud 231 rotates, and the flange 4 is fixed in conjunction with the conical surface 211, and the axis of the flange 4 is aligned with the centering disk 21 and the reference column 22 to achieve centering clamping, and in the subsequent clamping process of the clamping rod 51, it can still be guided and fixed with the reference column 22 as the reference.

[0045] Furthermore, the centering disk 21 is symmetrically provided with conical surfaces 211, and the inner fixed disk 32 is provided with a conical groove for guiding the conical surface 211. After the flange 4 is fixed to the centering disk 21, a crane is used to hook the fixing frame 23 so that the centering disk 21 is oriented toward the conical groove on the inner fixed disk 32 for placement. The conical groove and the conical surface 211 are matched to perform self-centering, and the axes of the centering disk 21 and the inner fixed disk 32 are guided to coincide to complete the fixation.

[0046] As an embodiment provided by the present invention, a push block 52 is provided on the clamping rod 51, and when the push block 52 extends out of the clamping rod 51, an air cavity is formed between the two, and when the push block 52 is retracted into the clamping rod 51, it is locked.

[0047] Specifically, a slide groove 311 is provided on the outer fixed disk 31, and a sliding portion 511 is provided on the clamping rod 51. The sliding portion 511 is slidably connected to the slide groove 311. The clamping rod 51 is provided with a movable groove facing the outer fixed disk 31, and the push block 52 is movably connected to the movable groove. The push block 52 is rotatably connected with a fitting shaft. After the flange 4 is installed on the inner fixed disk 32 by a crane, the clamping rod 51 and the two movable tool heads on the vertical lathe 1 are staggered, and then the plurality of clamping rods 51 are driven to slide along the guide groove 222 to fit the outer wall of the flange disk 4. Then, air is supplied to the air cavity through the air source to maintain air pressure, and the fitting shaft is driven to fit the outer wall of the flange disk 4. During the first clamping and turning process of the outer wall of the flange 4, as the turning space of the flange 4 decreases, the air pressure will push the push block 52 to fit the outer wall of the flange disk 4, always playing a supporting effect to perform auxiliary turning.

[0048] Furthermore, an extension plate 54 is provided on the clamping rod 51 , and a screw 541 is threadedly connected to the outer fixing plate 31 . The screw 541 is rotated to fit the extension plate 54 to lock and fix the clamping rod 51 .

[0049] Furthermore, an air channel 512 is opened on the clamping rod 51, and both ends of the air channel 512 are respectively connected to the air cavity and the interior of the inner fixed disk 32. An air source is provided inside the inner fixed disk 32, and the air source inflates and pressurizes the air channel 512, and the push block 52 is unlocked to extend with the air pressure.

[0050] As an embodiment provided by the present invention, the inner fixing disk 32 is driven by the motor 110 , and the outer fixing disk 31 is pulled out along with the reference column 22 and rotates along with the inner fixing disk 32 .

[0051] Specifically, a limiting ring 221 is provided on the reference column 22, and the limiting ring 221 will limit the distance that the reference column 22 enters the centering disk 21. When the reference column 22 is inserted into the centering disk 21, the motor 110 only drives the inner fixed disk 32. When it is necessary to turn the inner hole and thread of the flange 4, the reference column 22 is pulled out. At this time, the motor 110 drives the inner fixed disk 32 and the outer fixed disk 31 at the same time to provide driving force when the clamping rod 51 is attached to the outer wall of the flange 4 during the secondary clamping.

[0052] Furthermore, it also includes a driving shaft 33, which is slidably connected to the output end of the motor 110, and an elastic member is arranged between the two. The driving shaft 33 is provided with a lining portion 333 that matches the reference column 22, and the driving shaft 33 is provided with a first coupling strip 331 that slides along the axis and is always coupled to the transmission slider 321 on the inner fixed disk 32, and the driving shaft 33 is provided with a second coupling strip 332 for coupling the plug-in coupling block 312 on the outer fixed disk 31. The elastic member pushes the driving shaft 33 to lift up, but since the insertion of the reference column 22 is restricted, the second coupling strip 332 and the plug-in coupling block 312 are loosened and decoupled from the driving shaft 33 and the outer fixed disk 31, but the driving shaft 33 rebounds as the reference column 22 is pulled out, so that the elastic member pushes the driving shaft 33 to move, driving the plug-in coupling block 312 and the second coupling strip 332 to couple, thereby realizing driving.

[0053] As an embodiment provided by the present invention, an air disk 34 is disposed on the inner fixed disk 32 , and the guide plate 24 starts to supply air away from the clamping rod 51 as the air disk 34 starts to supply air.

[0054] Specifically, the gas disk 34 will rotate together with the inner fixed disk 32. Before driving the inner fixed disk 32 to rotate, the gas disk 34 supplies gas. At this time, the guide plate 24 starts to supply gas with the gas disk 34 and moves away from the clamping rod 51. When the outer fixed disk 31 does not rotate during the first clamping, the guide plate 24 and the clamping rod 51 are separated in time, and the gas disk 34 can operate independently to guide different clamping rods 51 one by one by driving the guide plate 24 to move. A guide groove 513 is provided on the clamping rod 51 to guide the guide plate 24 to enter the guide groove 513 when it approaches the clamping rod 51.

[0055] A rotating ring 241 is rotatably connected to the inner fixed disk 32 , and the guide plate 24 is connected to the rotating ring 241 via a spring 242 . The spring 242 pushes the guide plate 24 toward the clamping rod 51 .

[0056] Furthermore, an air guide column 341 is provided on the air disk 34, and a sliding air pipe 343 slidably connected to the air guide column 341 is provided on the guide plate 24. An elastic limiting port 342 for limiting the air pressure is provided on the sliding air pipe 343. When the air disk 34 is supplying air, the air pressure in the air guide column 341 is continuously increased due to the restriction of the elastic limiting port 342, so as to overcome the pushing force of the spring 242 and move the guide plate 24 away from the clamping rod 51. At the same time, the inner fixed disk 32, the base 111, the centering disk 21 and the reference column 22 form a space, driving the gas ejected from the elastic limiting port 342 to accumulate in the space, and the accumulated gas will enter the air cavity along the air channel 512 on the clamping rod 51, so that when clamping for the first time, the air pressure formed by the gas filled in the air cavity pushes the push block 52.

[0057] A locking head 53 is slidably connected to the clamping rod 51, and a locking groove corresponding to the locking head 53 is formed on the pushing block 52. A one-way valve is provided on the air passage 512 to maintain the air pressure in the air cavity. During the first clamping, the locking head 53 on the pushing block 52 is always unlocked to extend the pushing block 52 to adhere to the outer wall of the flange 4 to maintain the air pressure. During the second clamping, the pushing block 52 retracts into the clamping rod 51 and is locked by the locking head 53. At this time, the side wall of the clamping rod 51 is directly adhered to the flange 4 for clamping. After the second clamping is completed, there is pressurized gas in the air cavity. At this time, the locking head 53 and the clamping rod 51 are unlocked, and the pushing block 52 will extend out to assist the clamping rod 51 to separate from the outer wall of the flange 4, thereby avoiding adhesion between metals during disassembly, and there is no need to manually slide multiple clamping rods 51 one by one for disassembly.

[0058] Furthermore, the centering disk 21 is provided with spiral air outlets 213 in a circular array, and the centering disk 21 is provided with a docking air ring 215 covering the spiral air outlet 213. The guide plate 24 is provided with a sliding air pipe 343. As the air disk 34 continuously discharges air, the sliding air pipe 343 moves with the guide plate 24 and is connected with the docking air ring 215, so that the gas is ejected from the spiral air outlet 213. During the secondary clamping, the chips are blown away and the cooling is performed in time when the inner wall and thread of the flange 4 are turned. When the reference column 22 is inserted, the reference column 22 will limit the movement limit of the guide plate 24, so that the sliding air pipe 343 and the docking air ring 215 are not docked.

[0059] First, the centering disk 21 is attached to the flange 4, and then the stud 231 rotates along the internal threaded tube 212, and the fixing frame 23 will slide in accordance with the reference column 22, and move close to the flange 4 with the reference column 22 as the stud 231 rotates, and the flange 4 is fixed with the conical surface 211. After fixing, the fixing frame 23 is hooked by a crane to make the centering disk 21 face the conical groove on the inner fixing disk 32 for placement, and the conical groove and the conical surface 211 coincide with each other for self-centering, and then the clamping rod 51 is staggered with the two movable tool heads on the vertical lathe 1, and then a plurality of clamping rods 51 are driven to slide along the guide groove 222 to attach to the outer wall of the flange 4, and then the air source is used to supply air to the air cavity to maintain the air pressure, so as to drive the fitting shaft to attach to the outer wall of the flange 4, and the first clamping is completed, and the outer wall is turned;

[0060] After the turning of the outer wall is completed, the pushing block 52 on the clamping rod 51 is locked by the locking head 53, and then the clamping rod 51 is slid along the guide groove 222 to clamp the outer wall of the flange 4. After clamping, the reference column 22 is pulled out, and the elastic member pushes the driving shaft 33 to move, driving the coupling block 312 and the second coupling strip 332 to couple, driving the inner fixed disk 32 and the outer fixed disk 31 to rotate together, and turning the inner wall and the thread is performed. After turning, the locking head 53 and the clamping rod 51 are unlocked, and the pushing block 52 will extend to assist the clamping rod 51 to separate from the outer wall of the flange 4.

[0061] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-precision flange turning device, comprising a vertical lathe (1) and a floor-standing processing table (11), characterized in that: The floor-standing processing table (11) is respectively provided with: A driving mechanism (3) comprising an outer fixed disk (31) and an inner fixed disk (32) which are rotatably arranged; A centering mechanism (2), comprising a centering plate (21) coaxially connected to the inner fixed plate (32), and a reference column (22) arranged along the central axis of the centering plate (21), wherein the centering plate (21) is driven and fixed on the flange plate (4); An auxiliary clamping mechanism (5) comprising a plurality of clamping rods (51) slidably connected to the outer fixing plate (31) in a circular array; Wherein: a guide plate (24) is movably arranged on the reference column (22), and the guide plate (24) is driven to be vertically arranged along the axis of the reference column (22) to guide the movement of the clamping rod (51).

2. A high-precision flange turning equipment according to claim 1, characterized in that: The centering disk (21) is symmetrically provided with a conical surface (211), and the centering disk (21) is symmetrically provided with a fixing frame (23) along the reference column (22), and the fixing frame (23) pushes against the flange (4) to fit the conical surface (211).

3. The high-precision flange turning equipment according to claim 1, characterized in that: The centering disk (21) is symmetrically provided with a conical surface (211), and the inner fixed disk (32) is provided with a conical groove for guiding the conical surface (211).

4. The high-precision flange turning equipment according to claim 1, characterized in that: The clamping rod (51) is provided with a push block (52), and when the push block (52) extends out of the clamping rod (51), an air cavity is formed between the two, and when the push block (52) is retracted into the clamping rod (51), it is locked.

5. The high-precision flange turning equipment according to claim 1, characterized in that: The inner fixed disk (32) is driven by a motor (110), and the outer fixed disk (31) is drawn out along with the reference column (22) and rotates along with the inner fixed disk (32).

6. The high-precision flange turning equipment according to claim 1, characterized in that: An air disk (34) is disposed on the inner fixed disk (32), and the guide plate (24) starts to transport air away from the clamping rod (51) as the air disk (34) starts to transport air.

7. The high-precision flange turning equipment according to claim 5, characterized in that: It also includes a driving shaft (33), on which is provided a first coupling strip (331) that slides along the axis and is always coupled to the inner fixed disk (32); the driving shaft (33) rebounds as the reference column (22) is pulled out, so as to drive the driving shaft (33) to couple to the outer fixed disk (31).

8. The high-precision flange turning equipment according to claim 4, characterized in that: An air passage (512) is provided on the clamping rod (51), and an air source is provided on the inner fixed disk (32). The air source inflates and pressurizes the air passage (512), and the push block (52) is unlocked to be pushed and extended by the air pressure.

9. The high-precision flange turning equipment according to claim 6, characterized in that: The gas disc (34) is provided with an air guide column (341), the guide plate (24) is provided with a sliding air pipe (343) slidably connected to the air guide column (341), and the sliding air pipe (343) is provided with an elastic limiting port (342) for limiting air pressure.

10. The high-precision flange turning equipment according to claim 6, characterized in that: The centering plate (21) is provided with spiral air outlets (213) in a circumferential array, and the guide plate (24) is provided with a sliding air pipe (343). The sliding air pipe (343) moves with the guide plate (24) and is connected to the spiral air outlets (213).

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