CN108818284B - Crankshaft polishing device and method for diesel engine - Google Patents
Crankshaft polishing device and method for diesel engine Download PDFInfo
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- CN108818284B CN108818284B CN201810950188.4A CN201810950188A CN108818284B CN 108818284 B CN108818284 B CN 108818284B CN 201810950188 A CN201810950188 A CN 201810950188A CN 108818284 B CN108818284 B CN 108818284B
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- crankshaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention discloses a crankshaft polishing device and a crankshaft polishing method for a diesel engine, which comprise a base, a clamping device, a lifting device and a polishing device, wherein the clamping device can fix two ends of a crankshaft; the clamping device comprises a first clamping device and a second clamping device with adjustable intervals, the lifting device is fixed on the base and positioned between the first clamping device and the second clamping device, and the polishing device is connected to the lifting device; the polishing device comprises a shell, a plurality of main journal polishing parts and a plurality of connecting rod journal polishing parts, wherein the main journal polishing parts and the connecting rod journal polishing parts are arranged in a crossed mode at intervals, and the positions of the main journal polishing parts and the connecting rod journal polishing parts correspond to the positions of main journals and connecting rod journals on a crankshaft; the invention has the beneficial effects that: can realize treating the main journal and the connecting rod journal of polishing bent axle polishing simultaneously, realize that work efficiency is high, the operation is automatic, convenient and fast.
Description
Technical Field
The invention relates to a polishing device and a polishing method, in particular to a crankshaft polishing device and a polishing method for a diesel engine.
Background
The bent axle makes the important part in the diesel engine, among the current bent axle burnishing device, the part uses the polishing area to polish, and is comparatively numerous and diverse, is not convenient for dismantle and maintain, and most bent axle burnishing device can't polish main shaft journal and connecting rod journal simultaneously, and work efficiency is low, hardly satisfies people's operation requirement.
The utility model discloses a crankshaft polishing device, like patent No. 201720549355.5, application date is 2017.05.17, discloses a crankshaft polishing device, including base (1), the top left side of base (1) is provided with hydraulic telescoping rod (2), the top of hydraulic telescoping rod (2) is provided with support column (3), the bottom of support column (3) is provided with two sets of connecting seats (4), the outer wall of connecting seat (4) is connected with take-up pulley (5) through the transmission shaft, be connected with polishing abrasive belt (6) between two sets of take-up pulley (5), the right side the outer wall of connecting seat (4) is provided with driving motor (7), spout (8) have been seted up at the top of base (1), slide (9) have been pegged graft to the inner chamber of spout (8), the top of slide (9) is provided with workstation (10), the bottom left and right sides of workstation (10) all is, the bottom of the roller (11) is in contact with the top of the base (1), a baffle (12) is arranged on the rear side of the base (1), an electric telescopic rod (13) is arranged at the bottom of the baffle (12), the bottom of the electric telescopic rod (13) is connected with the top of the workbench (10), stop blocks (14) are arranged at the bottom and the top of the surface of the workbench (10), a screw rod (15) longitudinally penetrates through the top of each stop block (14), a rocker (16) transversely penetrates through the top end of each screw rod (15), a bearing (17) is arranged at the bottom of each screw rod (15), a motor (18) is arranged at the bottom of each stop block (14), the power output end of the top of each motor (18) is connected with a transmission rod (19), the top of each transmission rod (19) penetrates through the top of each stop block (14), and fixing rings (20) are respectively connected with the bottom of each bearing (17) and the top of each transmission, the left side and the right side of the fixing ring (20) are provided with fastening bolts (21).
And patent numbers: 201720449050.7 application date is: 2017.04.26 discloses a crankshaft polishing machine, including afterbody V type anchor clamps (1), head V type anchor clamps (7), fuselage (9), burnishing device and moving platform (10), its characterized in that: set up afterbody V type anchor clamps (1) and head V type anchor clamps (7) on fuselage (9), the clamping has bent axle (2) between afterbody V type anchor clamps (1) and head V type anchor clamps (7), stroke gasket (11) have all been placed on afterbody V type anchor clamps (1) and head V type anchor clamps (7), stroke gasket (11) set up between bent axle (2) and afterbody V type anchor clamps (1) and head V type anchor clamps (7), burnishing device sets up on moving platform (10), moving platform (10) activity sets up on fuselage (9).
Above two patents all adopt the polishing abrasive band to polish, it can realize comparatively comprehensive polishing to the bent axle surface to discover it easily, nevertheless hardly polishes to the position of comparatively hiding, consequently needs a more comprehensive burnishing device.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a crankshaft polishing device and a crankshaft polishing method for a diesel engine, which can solve the problem that the main journal and the connecting rod journal cannot be polished simultaneously in the background technology.
The invention solves the technical problems through the following technical scheme: the invention relates to a crankshaft polishing device for a diesel engine, which comprises a base, a clamping device, a lifting device and a polishing device, wherein the clamping device can fix two ends of a crankshaft; the clamping device comprises a first clamping device and a second clamping device with adjustable intervals, the first clamping device and the second clamping device are respectively fixed at two ends of the upper surface of the base, the lifting device is fixed on the base and is positioned between the first clamping device and the second clamping device, and the polishing device can be vertically connected to the lifting device in an up-and-down moving mode; the polishing device comprises a shell with an open top, a plurality of main journal polishing parts and a plurality of connecting rod journal polishing parts, wherein the main journal polishing parts and the connecting rod journal polishing parts are fixed on the bottom surface in the shell, the shell is connected to the top of the lifting device, the main journal polishing parts and the connecting rod journal polishing parts are arranged in a cross mode at intervals, the positions of the main journal polishing parts and the connecting rod journal polishing parts correspond to the positions of a main journal and a connecting rod journal on a crankshaft, during polishing, the first clamping device, the second clamping device and the crankshaft are located on the same axis, the main journal polishing parts abut against the main journal, and the connecting rod journal.
Preferably, the base is provided with an installation groove, the lifting device is fixed in the installation groove, and the first clamping device and the second clamping device are respectively fixed on two sides of the installation groove.
Preferably, the first clamping device comprises a clamping motor, a first clamping ring, an air cylinder and a supporting table; the output end of the clamping motor is fixedly connected with the first clamping ring, the telescopic end of the air cylinder is fixedly connected with the end part of the supporting table, the clamping motor is fixed on the top surface of the supporting table, the air cylinder is fixed on the top surface of the base, and the distance between the air cylinder and the second clamping device is larger than the distance between the first clamping ring and the second clamping device.
Preferably, the bottom of the supporting table is provided with a sliding block, and the top surface of the base is also provided with a guide rail in sliding connection with the sliding block.
Preferably, the second clamping device is a fixing piece and comprises a supporting seat, a rotating shaft and a second clamping ring; the supporting seat is fixed at the end of the base, the rotating shaft is horizontally fixed at the top of the supporting seat, and the second clamping ring is fixed at the end of the rotating shaft.
Preferably, the lifting device comprises a lifting motor, a screw rod, a bearing, a nut and a connecting rod; lifting motor fixes at the mounting groove bottom surface to near a side, lead screw one end is fixed at lifting motor's output, and the other end passes through the bearing and rotates the side of connecting at mounting groove and lifting motor opposition, the lead screw includes first spiral thread section, the second spiral thread section of symmetry and opposite screw thread screw direction, and the nut is two, connects respectively at first spiral thread section, second spiral thread section department, and the connecting rod is two, and the one end of connecting rod articulates at the top of nut, and the other end articulates in burnishing device's bottom.
Preferably, the main journal polishing parts are provided with five parts, each main journal polishing part comprises an installation plate and a polishing wheel, the bottom of the installation plate is fixed on the inner bottom surface of the shell, and the polishing wheels can be detachably fixed on the top of the installation plate.
Preferably, the number of the connecting rod journal polishing parts is four, and each connecting rod journal polishing part comprises a fixed rod, a lantern ring, a connecting sleeve, a telescopic rod, a spring and a polishing piece; the dead lever is fixed on casing both sides face, cup joints on the dead lever that the lantern ring can be movable, and adapter sleeve one end is fixed on the lantern ring, and the one end of other end swing joint telescopic link, the other end fixed connection polishing piece of telescopic link, the outside cover of telescopic link has the spring, the lower extreme fixed connection of spring is in adapter sleeve's up end department, and the upper end fixed mounting of spring is in the bottom surface of polishing piece.
Preferably, the polishing piece comprises an upper polishing seat, an upper semicircular polishing ring, a lower polishing seat and a lower semicircular polishing ring; a semicircular groove is formed in the upper polishing seat, the upper semicircular polishing ring can be detached and placed in the semicircular groove of the upper polishing seat, a semicircular groove is formed in the lower polishing seat, the lower semicircular polishing ring can be detached and placed in the semicircular groove of the lower polishing seat, the upper polishing seat is connected with the lower polishing seat through a bolt, and a closed structure formed by the inner side surfaces of the upper semicircular polishing ring and the lower semicircular polishing ring is consistent with the curvature radius of a connecting rod journal on a crankshaft to be polished.
The invention also provides a polishing method adopting the crankshaft polishing device for the diesel engine, which comprises the following steps:
(1) preparing before clamping the crankshaft; adjusting the distance between the first clamping device and the second clamping device to enable the clamping devices to clamp two ends of the crankshaft and fix the crankshaft;
(2) preparing for polishing; adjusting the height of the lifting device to enable the main journal polishing part to be abutted on the main journal, and the connecting rod shaft is abutted on the connecting rod journal through the polishing part;
(3) polishing; starting a polishing device to polish;
(4) working after polishing; the height of the lifting device is adjusted to ensure that the lifting device descends and does not abut against the crankshaft any more, and the crankshaft is taken down.
Compared with the prior art, the invention has the following advantages:
(1) the polishing device is provided with the plurality of main journal polishing parts and the connecting rod journal polishing parts, so that the main journal and the connecting rod journal of the crankshaft to be polished can be polished simultaneously, the polishing is more comprehensive, dead corners are avoided, the working efficiency is high, the operation is automatic, and the polishing device is convenient and quick;
(2) after polishing is finished, the polishing device can be collected into the bottom of the mounting groove through the lifting device, and damage caused by collision when the device is idle is avoided;
(3) the polishing wheel, the upper semicircular polishing ring and the lower semicircular polishing ring are detachably fixed, so that the polishing wheel, the upper semicircular polishing ring and the lower semicircular polishing ring are conveniently installed and detached and can be replaced.
Drawings
FIG. 1 is a schematic structural view of a crankshaft polishing device for a diesel engine according to an embodiment of the present invention;
FIG. 2 is a schematic view of the base and clamping device of FIG. 1;
FIG. 3 is a schematic structural view of the lifting device and the polishing device in FIG. 1;
fig. 4 is a schematic view of a structure of the connecting rod journal polishing portion in fig. 3.
In the figure: the polishing device comprises a base 1, a mounting groove 11, a guide rail 12, a clamping device 2, a first clamping device 21, a clamping motor 211, a first clamping ring 212, an air cylinder 213, a support table 214, a sliding block 2141, a second clamping device 22, a support seat 221, a rotating shaft 222, a second clamping ring 223, a lifting device 3, a lifting motor 31, a screw rod 32, a first spiral thread section 321, a second spiral thread section 322, a bearing 33, a nut 34, a connecting rod 35, a polishing device 4, a shell 41, a spindle neck polishing part 42, a mounting plate 421, a polishing wheel 422, a connecting rod spindle neck polishing part 43, a fixing rod 431, a collar 432, a connecting sleeve 433, a telescopic rod 434, a spring 435, a polishing piece 436, an upper polishing seat 4361, an upper semicircular polishing ring 4362, a lower polishing seat 4363, a lower semicircular polishing ring 4364 and a crankshaft 5.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
As shown in fig. 1, the crankshaft polishing device for the diesel engine of the embodiment includes a base 1, a clamping device 2 capable of fixing two ends of a crankshaft 5, a lifting device 3, and a polishing device 4; the clamping device 2 comprises a first clamping device 21 and a second clamping device 22 with adjustable intervals, the first clamping device 21 and the second clamping device 22 are respectively fixed at two ends of the upper surface of the base 1, the lifting device 3 is fixed on the base 1 and is positioned between the first clamping device 21 and the second clamping device 22, and the polishing device 4 can be vertically connected to the lifting device 3 in a vertically-moving mode; the polishing device 4 comprises a shell 41 with an open top, a plurality of main journal polishing parts 42 and a plurality of connecting rod journal polishing parts 43, wherein the main journal polishing parts 42 and the connecting rod journal polishing parts 43 are fixed on the bottom surface in the shell 41, the shell 41 is connected to the top of the lifting device 3, the main journal polishing parts 42 and the connecting rod journal polishing parts 43 are arranged in a crossed mode at intervals, the positions of the main journal polishing parts and the connecting rod journal polishing parts correspond to the positions of a main journal and a connecting rod journal on the crankshaft 5, when polishing is conducted, the first clamping device 21, the second clamping device 22 and the crankshaft 5 are located on the same axis, the main journal polishing parts 42 abut against the main journal, and the connecting. Can realize polishing main journal, connecting rod journal simultaneously, polishing effect is more meticulous.
The base 1 is provided with an installation groove 11, the lifting device 3 is fixed in the installation groove 11, the first clamping device 21 and the second clamping device 22 are respectively fixed on the upper surface of the base 1 on two sides of the installation groove 11, and the installation groove 11 enables the lifting device 3 to fall into the installation groove 11 when not used, so that the clamping device 2 is not too high, the space and the materials are saved, the whole device is more compact, and on the other hand, the device is prevented from being damaged due to collision when being idle.
As shown in fig. 2, the main purpose of the clamping device 2 in this embodiment is to clamp the crankshaft 5 during the polishing process, so that the distance between the first clamping device 21 and the second clamping device 22 is adjustable, in the first scheme: the first clamping device 21 can be a movable mechanism, and the second clamping device 22 can be a fixed mechanism; scheme II: the first clamping device 21 may be a fixed mechanism, the second clamping device 22 may be a movable mechanism, and the third scheme is as follows: it is also possible that both the first clamping device 21 and the second clamping device 22 are movable mechanisms, and all are within the scope of the present invention.
In this embodiment, a first scheme is adopted, and specifically, the first clamping device 21 includes a clamping motor 211, a first clamping ring 212, an air cylinder 213, and a support table 214; the output end of the clamping motor 211 is fixedly connected with the first clamping ring 212, the telescopic end of the air cylinder 213 is fixedly connected with the end of the supporting table 214, the clamping motor 211 is fixed on the top surface of the supporting table 214, the air cylinder 213 is fixed on the top surface of the base 1, and the distance between the air cylinder 213 and the second clamping device 22 is greater than the distance between the first clamping ring 212 and the second clamping device 22, as shown in the figure, the air cylinder 213 is installed on the leftmost side of the top surface of the base 1, the second clamping device 2 is installed on the rightmost side of the top surface of the base 1, and only when the crankshaft 5 is clamped, the first clamping device 21 and the second clamping. The supporting platform 214 is connected with the base 1 in a sliding manner, specifically, a sliding block 2141 is arranged at the bottom of the supporting platform 214, and a guide rail 12 connected with the sliding block in a sliding manner is further arranged on the top surface of the base 1; the supporting platform 214 and the base 1 may also be connected in a rolling manner, rollers may be disposed at the bottom of the supporting platform 214, and the top surface of the base 1 is provided with corresponding roller rails.
The present embodiment only provides a moving manner of the first clamping device 21, and it is within the scope of the present invention to realize a mechanism that can horizontally move the first clamping device 21, such as a screw nut connection, a cam mechanism, a gear connection, etc.
The second clamping device 22 is a fixing member, and includes a supporting seat 221, a rotating shaft 222, and a second clamping ring 223; the supporting seat 221 is fixed at the end of the base, the rotating shaft 222 is horizontally fixed at the top of the supporting seat 221, the second clamping ring 223 is fixed at the end of the rotating shaft 222, the first clamping ring 212 and the second clamping ring 223 can be cylinders with end faces (namely clamping faces) being vertical faces, and when polishing is performed, the first clamping ring 212, the second clamping ring 223 and the crankshaft 5 are on the same axis.
As shown in fig. 3, the lifting device 3 includes a lifting motor 31, a screw rod 32, a bearing 33, a nut 34, and a connecting rod 35; the lifting motor 31 is fixed on the bottom surface of the installation groove 11 and abuts against one side surface, as shown in fig. 3, only by the right side surface of the installation groove 11, one end of the screw rod 32 is fixed on the output end of the lifting motor 31, the other end is rotatably connected on the opposite side surface of the installation groove 11 and the lifting motor 31, i.e. the left side surface in the figure, the screw rod 32 comprises a first spiral thread section 321 and a second spiral thread section 322 which are symmetrical and have opposite spiral directions, two nuts 34 are respectively connected at the first spiral thread section 321 and the second spiral thread section 322, two connecting rods 35 are provided, one end of each connecting rod 35 is hinged at the top of the nut 34, the other end is hinged at the bottom of the polishing device 4, and particularly at the bottom of the shell 41, so that the two nuts 34 can simultaneously move in opposite directions or opposite directions, so that the shell 41 can stably ascend or descend, the invention is not limited to the positions of the first spiral thread section 321 and the second spiral thread section, the two sections of threads are opposite in direction and symmetrical about the middle of the screw rod.
In this embodiment, the main journal polishing portions 42 are provided with five, each main journal polishing portion 42 includes an installation plate 421 and a polishing wheel 422, the bottom of the installation plate 421 is fixed on the inner bottom surface of the housing 41, and the polishing wheels 422 are detachably fixed on the top of the installation plate 421, so that replacement is convenient.
As shown in fig. 3 to 4, in the present embodiment, there are four connecting rod journal polishing portions, and the connecting rod journal polishing portion 43 includes a fixing rod 431, a collar 432, a connecting sleeve 433, a telescopic rod 434, a spring 435, and a polishing member 436; the fixed rod 431 is fixed on two side surfaces of the shell 41, specifically, as shown in the figure, the fixed rod 431 is fixed on the left and right side surfaces of the shell 41 and is parallel to the axis of the crankshaft 5, the lantern ring 432 is movably sleeved on the fixed rod 431, one end of the connecting sleeve 433 is fixed on the lantern ring 432, the other end of the connecting sleeve 433 is movably connected with one end of the telescopic rod 434, the other end of the telescopic rod 434 is fixedly connected with the polishing piece 436, specifically, the fixed rod is connected with the lower polishing seat 4363, the outer side of the telescopic rod 434 is sleeved with a spring 435, the lower end of the spring 435 is fixedly connected with the upper end surface of the connecting sleeve 433, and. The four connecting rod journal polishing portions 43 are arranged at equal intervals and are arranged to intersect with the main journal polishing portion 42.
The polishing member 436 comprises an upper polishing seat 4361, an upper semicircular polishing ring 4362, a lower polishing seat 4363 and a lower semicircular polishing ring 4364; a semicircular groove is formed in the upper polishing seat 4361, the upper semicircular polishing ring 4362 can be detachably arranged in the semicircular groove of the upper polishing seat 4361, a semicircular groove is formed in the lower polishing seat 4363, the lower semicircular polishing ring 4364 can be detachably arranged in the semicircular groove of the lower polishing seat 4363, the upper polishing seat 4361 is in bolt connection with the lower polishing seat 4363, and a closed structure formed by the inner side surfaces of the upper semicircular polishing ring 4362 and the lower semicircular polishing ring 4364 is consistent with the curvature radius of a connecting rod journal on the crankshaft 5 to be polished.
The polishing steps of the crankshaft polishing device adopted by the invention are as follows:
(1) preparing before clamping the crankshaft 5; adjusting the distance between the first clamping device 21 and the second clamping device 22 to enable the clamping device 2 to fix the crankshaft 5; specifically, the air cylinder 213 is started, the telescopic end of the air cylinder 213 pushes the support table 214 to move rightwards, the support table 214 drives the clamping motor 211 on the upper surface of the support table to move rightwards, the crankshaft 5 to be polished is fixed through a first clamping ring 212 connected with the output shaft end of the clamping motor 211 and a second clamping ring 223 connected with the left end of the rotating shaft 222, and the shaft centers of the main journals and the shaft centers of the connecting rod journals are located on the same vertical plane;
(2) preparing for polishing; adjusting the height of the lifting device 3 to enable the main journal polishing part 42 to be abutted on the main journal, and the connecting rod shaft is abutted on the connecting rod journal through the polishing part 43; specifically, the lifting motor 31 is started, the lifting motor 31 drives the screw rod 32 to rotate, the screw rod 32 drives the two nuts 34 to move in opposite directions, the nuts 34 drive the lower end of the connecting rod 35 to move towards the two ends of the screw rod 32, the connecting rod 35 drives the housing 41 to move upwards, thereby driving the mounting plate 421 and the fixing rod 431 to move upwards, the mounting plate 421 driving the polishing wheel 422 to move upwards and making the uppermost end of the polishing wheel 422 closely fit with the main journal of the crankshaft to be polished, the fixing rod 431 driving the lantern ring 432, the connecting sleeve 433 and the telescopic rod 434 to move upwards, the telescopic rod 434 driving the lower polishing seat 4363 to move upwards and making the inner side surface of the lower semicircular polishing ring 4364 closely fit with the connecting rod journal, stopping the lifting motor 31, placing the upper polishing seat 4361 with the upper semicircular polishing ring 4362 installed above the main journal of the crankshaft 5 to be polished together, and fixedly connecting the upper polishing seat 4361 with the lower polishing seat 4363 through bolts;
(3) polishing; starting the polishing device 4 for polishing, specifically, starting the clamping motor 211, rotating an output shaft of the clamping motor 211 and driving a crankshaft to rotate, rotating a main journal of the crankshaft and rubbing and polishing with the polishing wheel 422, driving an upper polishing seat 4361 and a lower polishing seat 4363 to do circular motion by taking the axis of the main journal of the crankshaft as the center of a circle by a connecting rod journal of the crankshaft, and rubbing and polishing the connecting rod journal with an upper semicircular polishing ring 4362 and a lower semicircular polishing ring 4364;
(4) working after polishing; the height of the lifting device 3 is adjusted to enable the lifting device to descend and not to abut against the crankshaft any more, and the specific operation is that after polishing is completed, the fixing of the first clamping ring 212 and the second clamping ring 223 on the crankshaft is removed, the starting cylinder 213 drives the supporting table 214 to move leftwards, the first clamping device 21 is separated from the crankshaft 5, the crankshaft 5 is taken down, the lifting motor 31 is started, the nut 34 is driven to move oppositely on the lead screw 32, and the shell 41 descends and restores to the original position.
In the invention, the clamping motor 211 is adopted to drive the crankshaft to rotate and rub the polishing wheel 422, the upper semicircular polishing ring 4362 and the lower semicircular polishing ring 4364, so that the main journal and the connecting rod journal of the crankshaft 5 to be polished are polished simultaneously, the working efficiency is high, the operation is automatic, and the operation is convenient and rapid; the polishing wheel 422, the upper semicircular polishing ring 4362 and the lower semicircular polishing ring 4364 are fixedly installed through bolts, so that the polishing wheel is convenient to install, disassemble and replace; after polishing, burnishing device 4 accessible elevating gear 3 income mounting groove 11 bottom, the collision causes the damage when avoiding the device to idle.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A crankshaft polishing device for a diesel engine is characterized by comprising a base, a clamping device, a lifting device and a polishing device, wherein the clamping device can fix two ends of a crankshaft; the clamping device comprises a first clamping device and a second clamping device with adjustable intervals, the first clamping device and the second clamping device are respectively fixed at two ends of the upper surface of the base, the lifting device is fixed on the base and is positioned between the first clamping device and the second clamping device, and the polishing device can be vertically connected to the lifting device in an up-and-down moving mode; the polishing device comprises a shell with an open top, a plurality of main journal polishing parts and a plurality of connecting rod journal polishing parts, wherein the main journal polishing parts and the connecting rod journal polishing parts are fixed on the bottom surface in the shell;
the base is provided with an installation groove, the lifting device is fixed in the installation groove, and the first clamping device and the second clamping device are respectively fixed on two sides of the installation groove;
the first clamping device comprises a clamping motor, a first clamping ring, an air cylinder and a supporting table; the output end of the clamping motor is fixedly connected with the first clamping ring, the telescopic end of the air cylinder is fixedly connected with the end part of the supporting table, the clamping motor is fixed on the top surface of the supporting table, the air cylinder is fixed on the top surface of the base, and the distance between the air cylinder and the second clamping device is greater than the distance between the first clamping ring and the second clamping device;
the lifting device comprises a lifting motor, a screw rod, a bearing, a nut and a connecting rod; lifting motor fixes at the mounting groove bottom surface to near a side, lead screw one end is fixed at lifting motor's output, and the other end passes through the bearing and rotates the side of connecting at mounting groove and lifting motor opposition, the lead screw includes first spiral thread section, the second spiral thread section of symmetry and opposite screw thread screw direction, and the nut is two, connects respectively at first spiral thread section, second spiral thread section department, and the connecting rod is two, and the one end of connecting rod articulates at the top of nut, and the other end articulates in burnishing device's bottom.
2. The polishing device for the crankshaft of the diesel engine as set forth in claim 1, wherein the supporting base is provided with a slider at a bottom thereof, and a guide rail slidably connected to the slider is further provided on a top surface of the base.
3. The crankshaft polishing device for the diesel engine as set forth in claim 1, wherein said second holding means is a fixing member including a supporting base, a rotating shaft, a second holding ring; the supporting seat is fixed at the end of the base, the rotating shaft is horizontally fixed at the top of the supporting seat, and the second clamping ring is fixed at the end of the rotating shaft.
4. The crankshaft polishing device for the diesel engine as set forth in claim 1, wherein five main journal polishing portions are provided, each main journal polishing portion includes a mounting plate and a polishing wheel, a bottom of the mounting plate is fixed to an inner bottom surface of the housing, and the polishing wheel is detachably fixed to a top of the mounting plate.
5. The crankshaft polishing device for the diesel engine as set forth in claim 1, wherein four connecting rod journal polishing portions are provided, and each connecting rod journal polishing portion comprises a fixing rod, a collar, a connecting sleeve, a telescopic rod, a spring and a polishing member; the dead lever is fixed on casing both sides face, cup joints on the dead lever that the lantern ring can be movable, and adapter sleeve one end is fixed on the lantern ring, and the one end of other end swing joint telescopic link, the other end fixed connection polishing piece of telescopic link, the outside cover of telescopic link has the spring, the lower extreme fixed connection of spring is in adapter sleeve's up end department, and the upper end fixed mounting of spring is in the bottom surface of polishing piece.
6. The polishing device for the crankshaft of the diesel engine as set forth in claim 5, wherein the polishing member comprises an upper polishing seat, an upper semi-circular polishing ring, a lower polishing seat, a lower semi-circular polishing ring; a semicircular groove is formed in the upper polishing seat, the upper semicircular polishing ring can be detached and placed in the semicircular groove of the upper polishing seat, a semicircular groove is formed in the lower polishing seat, the lower semicircular polishing ring can be detached and placed in the semicircular groove of the lower polishing seat, the upper polishing seat is connected with the lower polishing seat through a bolt, and a closed structure formed by the inner side surfaces of the upper semicircular polishing ring and the lower semicircular polishing ring is consistent with the curvature radius of a connecting rod journal on a crankshaft to be polished.
7. A polishing method using the crankshaft polishing device for a diesel engine according to any one of claims 1 to 6, characterized by comprising the steps of:
(1) preparing before clamping the crankshaft; adjusting the distance between the first clamping device and the second clamping device to enable the clamping devices to clamp two ends of the crankshaft and fix the crankshaft;
(2) preparing for polishing; adjusting the height of the lifting device to enable the main journal polishing part to be abutted on the main journal, and the connecting rod shaft is abutted on the connecting rod journal through the polishing part;
(3) polishing; starting a polishing device to polish;
(4) working after polishing; the height of the lifting device is adjusted to ensure that the lifting device descends and does not abut against the crankshaft any more, and the crankshaft is taken down.
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| CN201810950188.4A CN108818284B (en) | 2018-08-20 | 2018-08-20 | Crankshaft polishing device and method for diesel engine |
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| CN201810950188.4A CN108818284B (en) | 2018-08-20 | 2018-08-20 | Crankshaft polishing device and method for diesel engine |
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| CN108818284B true CN108818284B (en) | 2020-07-28 |
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| CN114367917B (en) * | 2022-01-26 | 2023-01-10 | 江苏邦德智造科技有限公司 | Crankshaft main journal polishing device |
| CN114734362A (en) * | 2022-05-21 | 2022-07-12 | 杜晨晨 | Automobile engine crankshaft polishing machine |
| CN114986281B (en) * | 2022-06-07 | 2024-05-10 | 新煌集团湘潭新煌曲轴制造有限公司 | Quick positioner of bent axle grinding |
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| CN116276607B (en) * | 2023-05-04 | 2024-05-10 | 浙江湖磨抛光磨具制造有限公司 | Crankshaft polishing equipment |
| CN116276606B (en) * | 2023-05-04 | 2024-07-02 | 浙江湖磨抛光磨具制造有限公司 | Crankshaft finishing machine |
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| US6026549A (en) * | 1995-11-30 | 2000-02-22 | Nippon Toyama Corporation | Crankpin phase indexing method and apparatus |
| EP2769806B1 (en) * | 2013-02-21 | 2014-12-17 | Supfina Grieshaber GmbH & Co. KG | Device and system for finishing a workpiece in the form of a crankshaft or a camshaft |
| CN107116458A (en) * | 2017-05-06 | 2017-09-01 | 浙江金兰汽车零部件有限公司 | Crankshaft grinder |
| CN207155415U (en) * | 2017-07-21 | 2018-03-30 | 滁州微秒精密机械有限公司 | A kind of numerical control for high-speed high-precision grinding is servo-actuated crankshaft grinding machine |
| CN208614414U (en) * | 2018-08-20 | 2019-03-19 | 安徽全柴动力股份有限公司 | A kind of use for diesel engine crankshaft burnishing device |
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