Machining device for large-size machine shell inner diameter

Abstract

The utility model discloses a machining device for the inner diameter of a large-size casing, which relates to the technical field of cutting and comprises a casing and a support for supporting, and a spindle is arranged on the inner side of the casing. The shell is of a symmetrical split structure and is spliced to the outer side of the main shaft in an up-down butt joint mode. A transmission device and a feeding device are respectively arranged at two ends of the shell; a bearing supporting device is fixed in the shell; the transmission device is used for driving the spindle to rotate; the feeding device is used for driving the spindle to horizontally move; the main shaft is sleeved with a cutting device; the bearing supporting device comprises a front bearing, a middle bearing and a rear bearing; the adjustable cutting device is arranged and matched with the feeding device, so that machining of the inner diameter of the machine shell is achieved; a plurality of bearings of the bearing supporting device are arranged to provide stability for rotation of the main shaft, and the machining precision is improved; the cutting devices are arranged on the two sides of the middle bearing, the cutting distance of the tool bits is adjusted, synchronous machining is achieved, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting, and more specifically, to a processing device for the inner diameter of a large-sized casing. Background Art

[0002] Turbine machinery belongs to the high-end equipment manufacturing industry, which requires high structural and dimensional accuracy. Depending on the working conditions, the equipment specifications vary greatly. Its large-sized casings are usually large and have different specifications. The inner diameter of the casing often needs to be precisely machined to meet the design requirements, which results in a high dependence on the processing capabilities of machine tools.

[0003] The following problems still exist in the existing processing of the inner diameter of large-size casings: the procurement cost of precision CNC boring machines is expensive and difficult to popularize; the existing processing equipment is difficult to perform standardized processing according to the different sizes of cylinder bodies, and the shaft jitter accuracy during processing is poor, resulting in increased production costs and reduced economic benefits. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a processing device for the inner diameter of a large-sized casing.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a processing device for the inner diameter of a large-sized casing, comprising a housing and a support, wherein a main shaft is provided on the inner side of the housing; the housing is a symmetrical split structure, with the upper and lower parts being assembled and spliced on the outer side of the main shaft and prevented from rotating by the support;

[0006] A transmission device and a feeding device are respectively provided at both ends of the housing, and the transmission device and the feeding device are supported by a support;

[0007] A bearing support device is fixed inside the housing, and the bearing support device is used to support the main shaft;

[0008] The transmission device is used to drive the main shaft to rotate; the feeding device is used to drive the main shaft to move horizontally;

[0009] The spindle is equipped with one or more cutting devices; a machine casing to be processed is installed between the housing and the cutting device;

[0010] The bearing support device includes a front bearing, an intermediate bearing and a rear bearing, which are fixed to the inside of the housing in sequence from the transmission device to the feeding device;

[0011] The cutting device includes a cutter head, a support plate, a cutter disc, a pressure cover, a tool table, a connecting plate, a threaded push rod and a clamp; the clamp fixes the main shaft; the pressure cover is mounted on the upper and lower sides and clamped to the pressure cover at the clamp; the cutter disc is fixed to the pressure cover and is located on the circumference of the main shaft; the connecting plate is fixed to the cutter disc; the threaded push rod is rotatably connected to the connecting plate; the support plate is slidably connected to; the threaded push rod is threadedly connected to the inside of the support plate; a tool table is fixed on the support plate, and a cutter head is detachably connected to the tool table, and the cutting radius of the cutter head can be changed by rotating the threaded push rod.

[0012] As a further preference of the present invention, the transmission device includes a transmission motor, a diaphragm coupling, an intermediate sleeve and a drive connecting shaft, the drive connecting shaft is fixedly connected to the main shaft; the drive connecting shaft is slidingly connected to the intermediate sleeve; the output end of the transmission motor is fixedly connected to the intermediate sleeve through a diaphragm coupling, which is used to drive the main shaft to rotate.

[0013] As a further preferred embodiment of the present invention, the feeding device includes a thrust spherical roller bearing, a connecting sleeve, a bushing, a nut, a screw, a rotating cylinder, a support box, a transmission shaft, a coupling and a feed motor, wherein the connecting sleeve is fixedly connected to the main shaft; the thrust spherical roller bearing is located in the connecting sleeve; the bushing is located inside the connecting sleeve, and is rotatably connected to the connecting sleeve through the thrust spherical roller bearing; the screw is fixedly connected to the bushing; the nut is threadedly connected to the screw; the rotating cylinder sleeve is fixed to the nut; the support box is fixed to the support, and the rotating cylinder is rotatably connected to the support box; the transmission shaft is fixedly connected to the rotating cylinder; the coupling is used to connect the transmission shaft and the output end of the feed motor, and is used to drive the main shaft to move horizontally.

[0014] As a further preferred embodiment of the present invention, the front bearing includes a front axle bracket, a front oil cup, a front end cover and a front axle sleeve, and the front axle bracket is fixedly connected to the outer shell; the front axle sleeve is sleeved on the main shaft, and the front axle sleeve is connected to the front axle bracket through the front end cover, located on the front side of the front axle bracket, and the front axle sleeve is conical, with its tip facing the intermediate bearing; the front oil cup is arranged at the front end cover; the intermediate bearing includes an intermediate axle bracket, an intermediate oil cup, a locating pin and an intermediate axle sleeve, and the intermediate axle bracket is fixedly connected to the outer shell; the intermediate axle sleeve is sleeved on the main shaft, and the intermediate axle sleeve is connected to the intermediate axle bracket through the locating pin, and the intermediate oil cup is located at the gap of the intermediate axle bracket and passes through the intermediate axle sleeve; the rear bearing includes a rear axle bracket, a rear oil cup, a rear end cover and a rear axle sleeve, and its structure is symmetrical with the front bearing, and stability is improved by setting multiple bearings, and the conical axle sleeve is used to balance the axial force.

[0015] As a further preference of the present invention, a hand wheel is inserted into the bottom of the support plate for rotating the threaded push rod below the support plate, and the distance between the cutter heads is adjusted by setting the hand wheel.

[0016] As a further preference of the present invention, a flap is hinged on the side of the shell for opening the flap and observing, so as to facilitate adjustment of the hand wheel and adjustment of the cutter head distance.

[0017] As a further preferred embodiment of the present invention, a plurality of annular positioning grooves are provided on the inner side surface of the shell for clamping the casing to be processed to prevent the casing to be processed from moving when the spindle moves.

[0018] Technical effects and advantages of the utility model:

[0019] 1. The utility model realizes the processing of the inner diameter of the casing by setting an adjustable cutting device and cooperating with the feeding device. The transmission of the tool is realized by the docking pressure cover setting, and it is easy to replace;

[0020] 2. The multi-bearing setting of the bearing support device provides stability for the spindle rotation, avoids vibration and improves processing accuracy;

[0021] 3. By setting cutting devices on both sides of the intermediate bearing, the cutting distance of the cutter head can be adjusted separately to achieve synchronous processing and improve processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a device for processing the inner diameter of a large-sized casing according to the present invention.

[0023] Figure 2 The utility model is a schematic structural diagram of a transmission device used in a processing device for the inner diameter of a large-sized casing.

[0024] Figure 3 The utility model is a schematic structural diagram of a front bearing in a device for processing the inner diameter of a large-sized casing.

[0025] Figure 4 The utility model is a structural schematic diagram of an intermediate bearing in a processing device for the inner diameter of a large-sized casing.

[0026] Figure 5 The utility model is a schematic structural diagram of a rear bearing in a processing device for the inner diameter of a large-sized casing.

[0027] Figure 6 The utility model is a schematic structural diagram of a tool in a device for processing the inner diameter of a large-sized casing.

[0028] Figure 7 This is a side structural schematic diagram of a tool in a processing device for the inner diameter of a large-sized casing according to the present invention.

[0029] Figure 8This is a structural schematic diagram of a feeding device for the inner diameter of a large-sized casing according to the present invention.

[0030] The accompanying drawings are marked as follows: 1. transmission device; 2. front bearing; 3. cutting device; 4. intermediate bearing; 5. housing; 6. rear bearing; 7. feeding device; 8. support; 9. casing to be processed; 101. transmission motor; 102. diaphragm coupling; 103. intermediate sleeve; 104. driving connecting shaft; 105. main shaft; 201. front shaft bracket; 202. front oil cup; 203. front end cover; 204. front shaft sleeve; 301. cutter head; 302. support plate; 303. cutter disc; 304. pressure cover; 305. tool holder; 306. connecting plate; 307 , clamp; 308, handwheel; 309, threaded push rod; 401, intermediate shaft bracket; 402, intermediate oil cup; 403, locating pin; 404, intermediate shaft sleeve; 501, flap; 502, locating groove; 601, rear shaft bracket; 602, rear oil cup; 603, rear end cover; 604, rear shaft sleeve; 701, thrust spherical roller bearing; 702, connecting sleeve; 703, rotating sleeve; 704, nut; 705, screw; 706, rotating cylinder; 707, support box; 708, transmission shaft; 709, coupling; 710, feed motor. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See attached Figure 1-8 As shown, a processing device for the inner diameter of a large-sized casing comprises a shell 5 and a support 8 for support, wherein a main shaft 105 is provided on the inner side of the shell 5; as a further preferred embodiment of the present invention, a plurality of annular positioning grooves 502 are provided on the inner side of the shell 5 for clamping the casing 9 to be processed to prevent the casing 9 to be processed from moving when the main shaft 105 moves; the shell 5 is a symmetrical split structure, and the upper and lower parts are spliced on the outer side of the main shaft 105 and prevented from rotating by the support 8; a transmission device 1 and a feeding device 7 are respectively provided at both ends of the shell 5, and the transmission device 1 and the feeding device 7 are supported by the support 8; a bearing support device is fixed inside the shell 5, and the bearing support device is used to support the main shaft 105;

[0033] like Figure 2As shown, in the embodiment of the present utility model, the transmission device 1 is used to drive the main shaft 105 to rotate. The transmission device 1 includes a transmission motor 101, a diaphragm coupling 102, an intermediate sleeve 103 and a drive connecting shaft 104. The drive connecting shaft 104 is fixedly connected to the main shaft 105; the drive connecting shaft 104 is slidably connected to the intermediate sleeve 103; the output end of the transmission motor 101 is fixedly connected to the intermediate sleeve 103 through the diaphragm coupling 102, so as to drive the main shaft 105 to rotate;

[0034] like Figure 8 As shown, in the embodiment of the present utility model, the feeding device 7 is used to drive the spindle 105 to move horizontally. The feeding device 7 includes a thrust spherical roller bearing 701, a connecting sleeve 702, a rotating sleeve 703, a nut 704, a screw 705, a rotating cylinder 706, a support box 707, a transmission shaft 708, a coupling 709 and a feeding motor 710. The connecting sleeve 702 is fixedly connected to the spindle 105; the thrust spherical roller bearing 701 is located in the connecting sleeve 702; the rotating sleeve 703 is located inside the connecting sleeve 702, and the feed motor 710 is fixedly connected to the spindle 105. The thrust spherical roller bearing 701 is rotatably connected to the connecting sleeve 702; the lead screw 705 is fixedly connected to the rotating sleeve 703; the nut 704 is threadedly connected to the lead screw 705; the rotating cylinder 706 is fitted with the nut 704 to fix it; the support box 707 is fixed to the support 8, and the rotating cylinder 706 is rotatably connected to the support box 707; the transmission shaft 708 is fixedly connected to the rotating cylinder 706; the coupling 709 is used to connect the transmission shaft 708 and the output end of the feed motor 710, and is used to drive the main shaft 105 to move horizontally.

[0035] like Figure 1 As shown, in the embodiment of the present invention, the spindle 105 is equipped with one or more cutting devices 3; a housing 9 to be processed is installed between the housing 5 and the cutting device 3; during the operation of the present invention, after the housing 9 to be processed is installed, the housing 5 is assembled and spliced up and down and fixed with bolts to achieve the replacement of the housing 9 to be processed, and the housing 5 is set to clamp the housing 9 to be processed;

[0036] like Figure 3 、 4As shown in Figure 5, in an embodiment of the present utility model, the bearing support device includes a front bearing 2, an intermediate bearing 4 and a rear bearing 6, which are fixed to the inside of the housing 5 in sequence from a transmission device to a feeding device 7, the front bearing 2 includes a front axle bracket 201, a front oil cup 202, a front end cover 203 and a front shaft sleeve 204, the front axle bracket 201 is fixedly connected to the housing 5; the front shaft sleeve 204 is sleeved with the main shaft 105, the front shaft sleeve 204 is connected to the front axle bracket 201 through the front end cover 203, and is located on the front side of the front axle bracket 201, the front shaft sleeve 204 is conical, and its tip faces the intermediate bearing 4; the front oil cup 202 is arranged at the front end cover 203; The intermediate bearing 4 includes an intermediate shaft support 401, an intermediate oil cup 402, a locating pin 403 and an intermediate shaft sleeve 404. The intermediate shaft support 401 is fixedly connected to the outer shell 5; the intermediate shaft sleeve 404 is sleeved on the main shaft 105, and the intermediate shaft sleeve 404 is connected to the intermediate shaft support 401 through the locating pin 403. The intermediate oil cup 402 is located in the gap of the intermediate shaft support 401 and passes through the intermediate shaft sleeve 404; the rear bearing 6 includes a rear shaft support 601, a rear oil cup 602, a rear end cover 603 and a rear shaft sleeve 604. Its structure is symmetrical with the front bearing 2. The stability is improved by setting multiple bearings, and the tapered shaft sleeve is used to balance the axial force.

[0037] During the working process of the present invention, the casing 9 to be processed can be installed on one side or both sides of the intermediate sleeve 404, and the processing is synchronized to improve the processing efficiency. The main shaft 105 is driven to rotate by the transmission device 1, driving the cutting device 3, and the axial movement of the cutting device 3 is carried out by the feeding device 7 to realize the cutting of the casing 9 to be processed;

[0038] like Figure 6 and 7As shown, in an embodiment of the present utility model, the cutting device 3 includes a cutter head 301, a support plate 302, a cutter disc 303, a pressure cover 304, a tool table 305, a connecting plate 306, a threaded push rod 309 and a clamp 307; the clamp 307 fixes the main shaft 105; the pressure cover 304 is mounted on the pressure cover 304 at the clamp 307; the cutter disc 303 is fixed to the pressure cover 304 and is located on the side of the main shaft 105; the connecting plate 306 is fixed to the cutter disc 303; the threaded push rod 309 is rotatably connected to the connecting plate 306; the support plate 302 is slidably connected to; the threaded push rod 309 is threadedly connected to the inside of the support plate 302; a tool table 305 is fixed on the support plate 302, and the tool head 301 is detachably connected to the tool table 305, and the cutting radius of the cutter head 301 can be changed by rotating the threaded push rod 309. A hand wheel 308 is inserted into the bottom of the support plate 302 for rotating the threaded push rod 309 below the support plate 302. The distance of the cutter head 301 is adjusted by setting the hand wheel 308. A flap 501 is hinged on the side of the housing 5 for opening the flap 501 and observing, so as to facilitate adjusting the hand wheel 308 and adjusting the distance of the cutter head 301.

[0039] In another embodiment of the present invention, the hand wheel 308 can be replaced by a motor to drive the threaded push rod 309 .

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A processing device for the inner diameter of a large-sized casing, comprising a housing and a support, wherein a main shaft is provided inside the housing; characterized in that: The housing is a symmetrical split structure, with the upper and lower parts being spliced on the outside of the main shaft and prevented from rotating by the support; A transmission device and a feeding device are respectively provided at both ends of the housing, and the transmission device and the feeding device are supported by a support; A bearing support device is fixed inside the housing, and the bearing support device is used to support the main shaft; The transmission device is used to drive the main shaft to rotate; the feeding device is used to drive the main shaft to move horizontally; The spindle is equipped with one or more cutting devices; a machine casing to be processed is installed between the housing and the cutting device; The bearing support device includes a front bearing, an intermediate bearing and a rear bearing, which are fixed to the inside of the housing in sequence from the transmission device to the feeding device; The cutting device includes a cutter head, a support plate, a cutter disc, a pressure cover, a tool table, a connecting plate, a threaded push rod and a clamp, the clamp fixes the main shaft; the pressure cover is mounted on the upper and lower sides and clamped to the pressure cover at the clamp; the cutter disc is fixed to the pressure cover and is located on the circumferential side of the main shaft; the connecting plate is fixed to the cutter disc; the threaded push rod is rotatably connected to the connecting plate; the support plate is slidably connected to; the threaded push rod is threadedly connected to the inside of the support plate; a tool table is fixed on the support plate, and a cutter head is detachably connected to the tool table.

2. A processing device for the inner diameter of a large-sized casing according to claim 1, characterized in that: The transmission device includes a transmission motor, a diaphragm coupling, an intermediate sleeve and a drive connecting shaft, wherein the drive connecting shaft is fixedly connected to the main shaft; the drive connecting shaft is slidably connected to the intermediate sleeve; the output end of the transmission motor is fixedly connected to the intermediate sleeve via the diaphragm coupling.

3. The device for processing the inner diameter of a large-sized casing according to claim 2, characterized in that: The feeding device includes a thrust spherical roller bearing, a connecting sleeve, a rotating sleeve, a nut, a screw, a rotating cylinder, a support box, a transmission shaft, a coupling and a feeding motor. The connecting sleeve is fixedly connected to the main shaft; the thrust spherical roller bearing is located in the connecting sleeve; the rotating sleeve is located inside the connecting sleeve, and is rotatably connected to the connecting sleeve through the thrust spherical roller bearing; the screw is fixedly connected to the rotating sleeve; the nut is threadedly connected to the screw; the rotating cylinder sleeve is fixed to the nut; the support box is fixed to the support, and the rotating cylinder is rotatably connected to the support box; the transmission shaft is fixedly connected to the rotating cylinder; the coupling is used to connect the transmission shaft and the output end of the feeding motor.

4. The device for processing the inner diameter of a large-sized casing according to claim 1, characterized in that: The front bearing includes a front axle bracket, a front oil cup, a front end cover and a front axle sleeve, and the front axle bracket is fixedly connected to the outer shell; the front axle sleeve is sleeved on the main shaft, and the front axle sleeve is connected to the front axle bracket through the front end cover, and is located on the front side of the front axle bracket, and the front axle sleeve is conical, and its tip faces the intermediate bearing; the front oil cup is arranged at the front end cover; the intermediate bearing includes an intermediate axle bracket, an intermediate oil cup, a locating pin and an intermediate axle sleeve, and the intermediate axle bracket is fixedly connected to the outer shell; the intermediate axle sleeve is sleeved on the main shaft, and the intermediate axle sleeve is connected to the intermediate axle bracket through the locating pin, and the intermediate oil cup is located in the gap of the intermediate axle bracket and passes through the intermediate axle sleeve; the rear bearing includes a rear axle bracket, a rear oil cup, a rear end cover and a rear axle sleeve, and its structure is symmetrical with the front bearing.

5. The device for processing the inner diameter of a large-sized casing according to claim 1, characterized in that: A hand wheel is inserted into the bottom of the supporting plate for rotating the threaded push rod below the supporting plate.

6. The device for processing the inner diameter of a large-sized casing according to claim 1, characterized in that: A flap is hinged on the side of the shell.

7. The device for machining the inner diameter of a large-sized casing according to claim 1, characterized in that: The inner side surface of the shell is provided with a plurality of annular positioning grooves.

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