CN113305542A - Automatic bearing press-fitting unit based on shaft fixation and control method thereof - Google Patents
Automatic bearing press-fitting unit based on shaft fixation and control method thereof Download PDFInfo
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- CN113305542A CN113305542A CN202110598250.XA CN202110598250A CN113305542A CN 113305542 A CN113305542 A CN 113305542A CN 202110598250 A CN202110598250 A CN 202110598250A CN 113305542 A CN113305542 A CN 113305542A
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- 230000003028 elevating effect Effects 0.000 claims description 7
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
- B23P19/006—Holding or positioning the article in front of the applying tool
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Abstract
The invention belongs to the field of bearing assembly, and particularly relates to an automatic bearing press-mounting unit based on shaft fixation and a control method thereof. The automatic press-fitting device realizes the automatic press-fitting of the bearing, can ensure that the inner ring and the outer ring of the bearing are simultaneously pressed and fitted in place, not only lightens the labor intensity of an operator, but also can avoid the quality problem caused by manual operation errors of the operator.
Description
Technical Field
The invention belongs to the field of bearing assembly, and particularly relates to an automatic bearing press-fitting unit based on shaft fixation and a control method thereof.
Background
In the technical process of bearing assembly on a bearing box, sometimes a shaft needs to be assembled at the same time, so that the inner ring of the bearing needs to be matched with the shaft in place, and the outer ring of the bearing needs to be matched with the bearing box in place. At present, in the assembly of the traditional small bearing, manual assembly is generally adopted, an operator lifts the shaft manually and presses the bearing by using a manual press-fitting device, the operability is poor, the labor intensity is high, the efficiency is low, and the press-fitting quality is easily influenced by misoperation.
Disclosure of Invention
Aiming at the defects existing in the traditional manual bearing assembly, the invention aims to provide an automatic bearing press-fitting unit based on shaft fixation and a control method thereof.
The purpose of the invention is realized by the following technical scheme:
the automatic bearing press-fitting unit comprises a frame, a supporting table, a lifting mechanism, a clamping mechanism and a press-fitting mechanism, wherein the supporting table is arranged at the bottom of the frame, a bearing box is placed on the supporting table, and a bearing to be pressed is placed on the bearing box; the lifting mechanism is arranged on the frame, the output end of the lifting mechanism is provided with a clamping mechanism for clamping or loosening the shaft, the clamping mechanism is provided with a press-mounting mechanism for press-mounting the bearing, and the press-mounting mechanism and the clamping mechanism are driven by the lifting mechanism to lift simultaneously; the clamping mechanism comprises a clamping oil cylinder, a clamping frame, a clamping plate assembly and a clamping tool, the clamping frame is installed at the output end of the lifting mechanism, the clamping oil cylinder is fixed on the clamping frame, the output end of the oil cylinder is connected with the clamping plate assembly which is lifted relative to the clamping frame, the clamping tool is installed below the output end of the lifting mechanism, and the clamping oil cylinder drives the clamping plate assembly to upwards press the clamping tool so as to tightly hold the shaft; the press-fitting mechanism comprises a servo press, a press-fitting column and a pressing plate, the servo press is mounted at the output end of the lifting mechanism, the press-fitting column is connected with the clamping frame in a relatively lifting mode, the upper end of the press-fitting column is connected with an output shaft of the servo press, and the lower end of the press-fitting column is connected with the pressing plate for press-fitting the bearing.
Wherein: the lifting mechanism comprises a servo motor, a speed reducer, a coupler, a lead screw nut and a lifting platform as the output end of the lifting mechanism, the servo motor and the speed reducer are fixed on the frame respectively, the lead screw is rotatably installed on the frame, the output end of the servo motor is connected with one end of the coupler through the speed reducer, the other end of the coupler is connected with the lead screw, the lead screw nut is in threaded connection with the lead screw to form a screw pair, and the lifting platform is connected to the lead screw nut.
The lifting platform is provided with a sliding block, a sliding rail is fixed on the frame along the lifting direction of the lifting platform, the sliding block is connected with the sliding rail in a sliding mode, and the sliding block slides on the sliding rail when the lifting platform is lifted.
The lifting platform is of a frame structure consisting of an upper surface, a lower surface and a rear surface, the upper surface and the lower surface are supported by an upright post, and the rear side of the lifting platform is connected with a screw nut; round holes for the clamping oil cylinder and the press-fitting column to penetrate through are formed in the upper surface of the lifting platform, and round holes for the shaft, the press-fitting column and the clamping upright column to penetrate through are formed in the lower surface of the lifting platform respectively.
The clamping tool comprises a clamping base, clamping blocks and springs, the clamping base is installed below the output end of the lifting mechanism through a clamping fixing piece, a hole is formed in the middle of the clamping base, a plurality of clamping blocks floating relative to the clamping base are evenly arranged in the hole along the circumferential direction, and each spring is connected between the upper portion of each clamping block and the outer edge of the clamping base.
The outer surface of the lower part of each clamping block is an inclined surface which is inclined inwards from top to bottom, the clamping oil cylinder drives the clamping plate assembly to press the inclined surface of each clamping block upwards, and each clamping block is pressed towards the center under the action of the clamping plate assembly to further clamp the shaft; the clamping oil cylinder drives the clamping plate assembly to loosen downwards, and each clamping block resets through the pulling force of the spring respectively, so that the shaft is loosened.
The clamping plate assembly comprises a clamping upper plate, a clamping upright post and a clamping lower plate, the clamping upper plate is positioned in the clamping frame, the clamping lower plate is positioned between the output end of the lifting mechanism and the pressure plate, the clamping upper plate and the clamping lower plate are connected through the clamping upright post, and the clamping upright post respectively penetrates out of the clamping frame and the output end of the lifting mechanism and respectively and relatively lifts with the clamping frame and the output end of the lifting mechanism; the clamping lower plate is driven by the clamping oil cylinder to press the clamping tool tightly.
The clamp is characterized in that a displacement sensor moving end is installed on the clamp upper plate, a displacement sensor fixed end is installed on the output end of the lifting mechanism, and the displacement sensor moving end and the displacement sensor fixed end are used for measuring displacement values of the clamp upper plate and the clamp lower plate.
The supporting platform comprises a supporting base, supporting stand columns and a supporting table top, the supporting base is fixed on the frame, the supporting table top is fixedly connected with the supporting base through a plurality of supporting stand columns, and the supporting table top supports and fixes the bearing box.
The invention discloses a control method of an automatic bearing press-fitting unit based on shaft fixation, which comprises the following steps:
firstly, an operator puts the shaft and the bearing on a bearing box and then starts a unit;
controlling the lifting mechanism to enable the output end of the lifting mechanism to descend to a descending position;
controlling the clamping oil cylinder to drive the clamping plate assembly to be pressed upwards, so that the clamping tool embraces the shaft;
judging whether the shaft needs to be lifted for a set distance according to the process parameters, and if so, controlling the lifting mechanism to enable the output end of the lifting mechanism to rise to a working position; if the shaft is not needed to be lifted, the descending position of the output end of the lifting mechanism is a working position;
controlling the servo press to drive a pressing plate, pressing the bearing downwards through the pressing plate, enabling the inner ring of the bearing to be matched with the shaft in place, and returning the servo press to the original position after the pressing is finished;
controlling the clamping oil cylinder to drive the clamping plate assembly to return to the original position downwards so that the clamping tool loosens the shaft;
controlling the servo press to drive the pressing plate, pressing the bearing downwards for the second time through the pressing plate, enabling the outer ring of the bearing to be matched with the bearing box in place, and returning the servo press to the original position after pressing;
controlling the lifting mechanism to enable the output end of the lifting mechanism to rise to the original position; and waiting for executing the next press mounting work.
The invention has the advantages and positive effects that:
1. the invention realizes the automatic press mounting of the bearing, reduces the labor intensity of an operator and avoids the quality problem caused by manual operation errors of the operator.
2. The press-fitting unit is novel in structure, and can adapt to bearings and shafts of different sizes by replacing different clamping tools and pressing plates.
3. The invention adopts the servo motor for positioning and uses the servo press for press mounting, thereby having high operation precision and good press mounting quality.
4. The control method of the invention has simple process and reliable connection.
Drawings
FIG. 1 is a schematic perspective view of an automatic press-fitting unit for bearings according to the present invention;
FIG. 2 is a front view of the automatic press-fitting unit for bearings according to the present invention;
FIG. 3 is a left side cross sectional view of the automatic bearing press-fitting machine set of the present invention;
FIG. 4 is a front view of a clamping fixture in the automatic bearing press-fitting machine set according to the present invention;
FIG. 5 is a top view of the clamping fixture in the automatic bearing press-fitting machine set according to the present invention;
FIG. 6 is a flowchart of a control method of the present invention;
wherein: the device comprises a frame 1, a support base 2, a support upright 3, a support table top 4, a bearing box 5, a bearing 6, a shaft 7, a servo motor 8, a reducer 9, a coupler 10, a screw fixing seat 11, a screw 12, a screw nut 13, a lifting table 14, a slider 15, a slide rail 16, a screw support 17, a servo press 18, a press support 19, a flange 20, a press mounting column 21, a clamping cylinder 22, a clamping frame 23, an upper clamping plate 24, a clamping upright 25, a clamping fixture 26, a clamping fixture 27, a lower clamping plate 28, a pressing plate 29, a clamping base 30, a clamping block 31, a spring 32, a displacement sensor moving end 33 and a displacement sensor fixing end 34.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the automatic bearing press-fitting unit of the present invention comprises a frame 1, a supporting table, a lifting mechanism, a clamping mechanism and a press-fitting mechanism, wherein the supporting table is installed at the bottom of the frame 1, a bearing box 5 is placed on the supporting table, and a bearing 6 to be press-fitted is placed on the bearing box 5; the lifting mechanism is arranged on the frame 1, the output end of the lifting mechanism is provided with a clamping mechanism for clamping or loosening the shaft 7, the clamping mechanism is provided with a press-fitting mechanism for press-fitting the bearing 6, and the press-fitting mechanism and the clamping mechanism are driven by the lifting mechanism to lift simultaneously.
The supporting table of this embodiment includes supporting base 2, supporting column 3 and supporting table surface 4, and this supporting base 2 is fixed in on the frame 1, and supporting table surface 4 passes through many supporting column 3 and supporting base 2 rigid coupling, and this supporting table surface 4 supports and fixed bearing case 5.
The lifting mechanism of the embodiment comprises a servo motor 8, a speed reducer 9, a coupler 10, a lead screw fixing seat 11, a lead screw 12, a lead screw nut 13, a lifting table 14, a slider 15, a slide rail 16 and a lead screw supporting seat 17, wherein the servo motor 8 and the speed reducer 9 are respectively fixed at the upper end of a frame 1, the lead screw fixing seat 11 is fixed at the upper side of the frame 1, the lead screw supporting seat 17 is fixed at the lower side of the frame 1, and the upper end and the lower end of the lead screw 12 are respectively in rotary connection with the lead screw fixing seat 11 and the lead screw supporting seat 17; the output end of the servo motor 8 is connected with one end of a coupler 10 through a speed reducer 9, the other end of the coupler 10 is connected with a lead screw 12, and a lead screw nut 13 is in threaded connection with the lead screw 12 to form a screw pair. The lifting platform 14 of the embodiment is a frame structure consisting of an upper surface, a lower surface and a rear surface, four upright posts are used as supports between the upper surface and the lower surface, and the clamping mechanism and the press-fitting mechanism are both arranged on the lifting platform 14; a round hole for the clamping oil cylinder 22 to glue the press-mounting column 21 to pass through is formed in the upper surface of the lifting platform 14, a round hole for the shaft 7 to pass through is formed in the center of the lower surface of the lifting platform, three round holes for the press-mounting column 21 to pass through the press-mounting mechanism are formed in the periphery of the round hole in the center, four round holes for the clamping column 25 to pass through the clamping mechanism are formed in the periphery of the three round holes, the rear side of the lifting platform 14 is connected with the screw nut 13, and the lifting platform is driven by the screw rod 12 to lift. In the embodiment, the left side and the right side of the screw 12 are respectively provided with a slide rail 16, and the height direction of the slide rail 16 is the lifting direction of the lifting platform 14; the left and right slide rails 16 are symmetrically fixed on the frame 1, two sliders 15 are respectively fixed on the left and right ends of the rear side of the lifting platform 14 from top to bottom, the sliders 15 are slidably connected with the slide rails 16, and when the lifting platform 14 is lifted, the sliders 15 slide on the slide rails 16. The servo motor 8 is rotatable in forward and reverse directions, and drives the elevating table 14 to ascend and descend through the speed reducer 9, the coupling 10, the screw 12, the slider 15, and the slide rail 16.
The clamping mechanism of this embodiment includes clamping cylinder 22, clamping frame 23, clamping plate subassembly, centre gripping mounting 26 and centre gripping frock 27, and clamping frame 23 is fixed in the inside of elevating platform 14, and clamping frame 23 of this embodiment is hollow cube structure, and the front has rectangular window with the left and right sides all to open, and clamping cylinder is installed at the top center, and the periphery at the top center is opened has the round hole that three pressure equipment posts that are used for the pressure equipment mechanism passed. The output end of the clamping oil cylinder 22 is connected with a clamping plate component which is lifted relative to the clamping frame 23, the clamping fixing component 26 is installed below the lifting platform 14 and used for fixing the clamping tool 27, and the clamping oil cylinder 22 drives the clamping plate component to upwards press the clamping tool 27 so as to tightly hold the shaft 7. The clamping plate assembly of the embodiment comprises an upper clamping plate 24, a clamping upright 25 and a lower clamping plate 28, wherein the upper clamping plate 24 is located in a clamping frame 23, the lower clamping plate 28 is located between the lifting table 14 and a pressing plate 29 of the pressing mechanism, the upper clamping plate 24 is connected with the lower clamping plate 28 through four clamping uprights 25, the clamping uprights 25 respectively penetrate through the clamping frame 23 and the lower surface of the lifting table 14 and are respectively connected with the clamping frame 23 and the lower surface of the lifting table 14 through linear bearings, and accordingly the lifting and the lowering can be performed relatively. The output end (piston shaft) of the clamping oil cylinder 22 is connected with the clamping upper plate 24, and the clamping oil cylinder 22 can drive the clamping lower plate 28 to move up and down through the clamping upper plate 24 and the clamping upright post 25 so as to press the clamping tool 27 tightly. The upper clamping plate 24 of the present embodiment is mounted with the moving end 33 of the displacement sensor, the fixed end 34 of the displacement sensor is mounted on the lifting platform 14, and the displacement value of the upper clamping plate 24 and the lower clamping plate 28 is measured through the moving end 33 and the fixed end 34 of the displacement sensor.
As shown in fig. 1 to 5, the clamping fixture 27 of the present embodiment is located below the clamping fixture 26, and includes a clamping base 30, clamping blocks 31 and springs 32, the clamping base 30 is installed below the clamping fixture 26 through screws, a hole is formed in the middle of the clamping base 30, a plurality of (three in the present embodiment) clamping blocks 31 floating relative to the clamping base 30 are uniformly arranged in the hole along the circumferential direction, and the springs 32 are connected between the outer surface of the upper portion of each clamping block 31 and the outer edge of the clamping base 30. The outer surface of the lower part of each clamping block 31 is an inclined surface which is inclined inwards from top to bottom, the clamping oil cylinder 22 drives the clamping lower plate 28 to press the inclined surface of each clamping block 31 upwards through the clamping upper plate 24 and the clamping upright post 25, so that each clamping block 31 is pressed towards the center under the action of the clamping lower plate 28 to further clamp the shaft 7; the clamping cylinder 22 drives the clamping lower plate 28 to be released downwards through the clamping upper plate 24 and the clamping upright 25, so that the clamping blocks 31 are respectively returned to the original positions through the pulling force of the springs 32, and the shaft 7 is released. The clamping tools 27 of different models can be replaced for holding shafts 7 of different sizes.
As shown in fig. 1 to 3, the press-fitting mechanism of the present embodiment includes a servo press 18, a press support 19, a flange plate 20, press-fitting columns 21, and a pressing plate 29, the press-fitting support 19 is fixed above the lifting table 14, the servo press 18 is mounted on the press-fitting support 19, a pressing head of the servo press 18 is connected to the flange plate 20, the lower side of the flange plate 20 is connected to the upper ends of the three press-fitting columns 21, each press-fitting column 21 is connected to the clamping frame 23 through a linear bearing so as to be capable of relatively lifting, and the lower end of each press-fitting column 21 is connected to the pressing plate 29 for press-fitting the bearing 6. Different pressure plates 29 can be replaced for press-fitting bearings 6 of different sizes.
The servo motor 8, the servo press 18 and the clamping cylinder 22 of the embodiment are respectively connected with a controller, the embodiment adopts a Siemens PLC-300 controller as a main control component, a Siemens V90 servo driver is used for driving the servo motor 8, and a KISTLER (Qishile) servo press 18 is used for press-fitting.
In order to realize the automatic control of the automatic press-fitting machine set, the following auxiliary control devices are also needed:
a start button for an operator to start the device;
a hydraulic station and valves for controlling the actuation of the clamping cylinders 22;
a detection switch A, detection switch B, detection switch C for detecting three clamp block 31 normal positions of centre gripping frock 27, should detect switch A, detection switch B, detection switch C and install respectively on centre gripping mounting 26.
As shown in fig. 6, the control method of the automatic bearing press-fitting unit based on shaft fixation of the present invention is as follows:
starting a self-checking program by a PLC-300 controller, and initializing parameters and mechanisms; the method comprises the following steps: the automatic flow step returns to the first step, whether the lower clamping plate 28 is at the origin or not is judged, and if the lower clamping plate 28 is at the origin, the servo press 18 returns to the original position; if lower clamping plate 28 is above the origin, servo press 18 returns to the original position first, and then lower clamping plate 28 returns to the original position; if lower clamping plate 28 is below the origin, lower clamping plate 28 is first repositioned, and servo press 18 is then repositioned; at this time, the detection switch a, the detection switch B and the detection switch C obtain signals that the three clamping blocks 31 of the clamping tool 27 are all in the original positions, and the servo press 18 outputs original position signals; then the lifting platform 14 returns to the original position;
firstly, after an operator puts workpieces such as a shaft 7, a bearing 6 and the like on a bearing box 5, a starting button is patted down, and equipment is started;
the PLC-300 controller controls the servo motor 8 to drive the lifting platform 14 to descend to a descending position;
the PLC-300 controller controls the clamping oil cylinder 22 to drive the clamping lower plate 28 to be pressed upwards, so that the clamping tool 27 embraces the shaft 7, and the displacement value of the clamping upper plate 24, which is detected by the displacement sensor, is fed back to the controller;
judging whether the shaft 7 needs to be lifted for a set distance according to the process parameters, if so, controlling the servo motor 8 by the PLC-300 controller to drive the lifting platform 14 to ascend to a working position, and if not, taking the descending position of the lifting platform 14 as the working position;
the PLC-300 controller controls the servo press 18 to execute a press-fitting program, the bearing 6 is pressed downwards through the pressing plate 29, the inner ring of the bearing 6 is matched with the shaft 7 in place, and the servo press 18 returns to the original position after the press-fitting is finished;
the PLC-300 controller controls the clamping oil cylinder 22 to drive the clamping lower plate 28 to return downwards to the original position, so that the clamping tool 27 loosens the shaft 7, the displacement value of the clamping mechanism, which is detected by the displacement sensor, is fed back to the PLC-300 controller, the three clamping blocks 31 of the clamping tool 27 return to the original position, and the signals, which are detected by the detection switch A, the detection switch B and the detection switch C on the clamping fixing piece 26, are fed back to the PLC-300 controller;
the PLC-300 controller controls the servo press 18 to execute a press-fitting program, the bearing 6 is pressed downwards for the second time through the pressing plate 29, the outer ring of the bearing 6 is matched with the bearing box 5 in place, and the servo press 18 returns to the original position after the press-fitting is finished;
the PLC-300 controller controls the servo motor 8 to drive the lifting platform 14 to ascend to the original position; and waiting for the next press mounting work.
Claims (10)
1. The utility model provides an automatic pressure equipment unit of bearing based on axle is fixed which characterized in that: the press mounting device comprises a frame (1), a supporting table, a lifting mechanism, a clamping mechanism and a press mounting mechanism, wherein the supporting table is mounted at the bottom of the frame (1), a bearing box (5) is placed on the supporting table, and a bearing (6) to be press mounted is placed on the bearing box (5); the lifting mechanism is arranged on the frame (1), the output end of the lifting mechanism is provided with a clamping mechanism for clamping or loosening the shaft (7), the clamping mechanism is provided with a press-fitting mechanism for press-fitting the bearing (6), and the press-fitting mechanism and the clamping mechanism are driven by the lifting mechanism to lift simultaneously; the clamping mechanism comprises a clamping oil cylinder (22), a clamping frame (23), a clamping plate assembly and a clamping tool (27), the clamping frame (23) is installed at the output end of the lifting mechanism, the clamping oil cylinder (22) is fixed on the clamping frame (23), the output end of the oil cylinder is connected with the clamping plate assembly which is lifted relative to the clamping frame (23), the clamping tool (27) is installed below the output end of the lifting mechanism, and the clamping oil cylinder (22) upwards presses the clamping tool (27) through driving the clamping plate assembly so as to tightly hold the shaft (7); the press-fitting mechanism comprises a servo press (18), a press-fitting column (21) and a pressing plate (29), the servo press (18) is installed at the output end of the lifting mechanism, the press-fitting column (21) and a clamping frame (23) can be connected in a relatively lifting mode, the upper end of the press-fitting column (21) is connected with an output shaft of the servo press (18), and the lower end of the press-fitting column (21) is connected with the pressing plate (29) for press-fitting a bearing (6).
2. The automatic bearing press-fitting unit based on shaft fixation as claimed in claim 1, wherein: elevating system includes servo motor (8), reduction gear (9), shaft coupling (10), lead screw (12), screw nut (13) and elevating platform (14) as the elevating system output, and this servo motor (8) and reduction gear (9) are fixed respectively on frame (1), screw (12) are rotated and are installed on frame (1), the output of servo motor (8) passes through reduction gear (9) and links to each other with shaft coupling (10) one end, the other end of this shaft coupling (10) with lead screw (12) are connected, screw nut (13) and lead screw (12) threaded connection, form the screw pair, are connected with on this screw nut (13) elevating platform (14).
3. The automatic bearing press-fitting unit based on shaft fixation as claimed in claim 2, wherein: the lifting platform (14) is provided with a sliding block (15), the frame (1) is fixedly provided with a sliding rail (16) along the lifting direction of the lifting platform (14), the sliding block (15) is connected with the sliding rail (16) in a sliding mode, and the sliding block (15) slides on the sliding rail (16) when the lifting platform (14) is lifted.
4. The automatic bearing press-fitting unit based on shaft fixation as claimed in claim 2, wherein: the lifting platform (14) is of a frame structure consisting of an upper surface, a lower surface and a rear surface, the upper surface and the lower surface are supported by an upright post, and the rear side of the lifting platform (4) is connected with a screw nut (13); round holes for the clamping oil cylinder (22) and the press-fitting column (21) to penetrate are formed in the upper surface of the lifting platform (4), and round holes for the shaft (7), the press-fitting column (21) and the clamping upright column (25) to penetrate are formed in the lower surface of the lifting platform (4) respectively.
5. The automatic bearing press-fitting unit based on shaft fixation as claimed in claim 1, wherein: the clamping tool (27) comprises a clamping base (30), clamping blocks (31) and springs (32), the clamping base (30) is installed below the output end of the lifting mechanism through a clamping fixing piece (26), a hole is formed in the middle of the clamping base (30), a plurality of clamping blocks (31) which are opposite to the floating clamping base (30) are evenly arranged in the hole along the circumferential direction, and each spring (32) is connected between the upper portion of each clamping block (31) and the outer edge of each clamping base (30).
6. The automatic bearing press-fitting unit based on shaft fixation as claimed in claim 5, wherein: the outer surface of the lower part of each clamping block (31) is an inclined surface which is inclined inwards from top to bottom, the clamping oil cylinder (22) upwards presses the inclined surface of each clamping block (31) by driving the clamping plate assembly, and each clamping block (31) is pressed towards the center under the action of the clamping plate assembly so as to clamp the shaft (7); the clamping oil cylinder (22) is driven to release downwards through the clamping plate assembly, and each clamping block (31) is reset through the pulling force of a spring (32) so as to release the shaft (7).
7. The automatic bearing press-fitting unit based on shaft fixation as claimed in claim 1, wherein: the clamping plate assembly comprises an upper clamping plate (24), a clamping upright post (25) and a lower clamping plate (28), the upper clamping plate (24) is positioned in the clamping frame (23), the lower clamping plate (28) is positioned between the output end of the lifting mechanism and the pressure plate (29), the upper clamping plate (24) is connected with the lower clamping plate (28) through the clamping upright post (25), and the clamping upright post (25) penetrates out of the clamping frame (23) and the output end of the lifting mechanism respectively and is lifted relative to the output ends of the clamping frame (23) and the lifting mechanism respectively; the clamping lower plate (28) is driven by the clamping oil cylinder (22) to press the clamping tool (27).
8. The automatic bearing press-fitting unit based on shaft fixation as claimed in claim 7, wherein: it removes end (33) to install displacement sensor on pressing from both sides tight upper plate (24), install displacement sensor stiff end (34) on elevating system's the output, through displacement sensor removes end (33) and displacement sensor stiff end (34) and measures press from both sides tight upper plate (24) and the displacement value of pressing from both sides tight hypoplastron (28) and remove.
9. The automatic bearing press-fitting unit based on shaft fixation as claimed in claim 1, wherein: the supporting platform comprises a supporting base (2), supporting upright columns (3) and a supporting table board (4), wherein the supporting base (2) is fixed on the frame (1), the supporting table board (4) is fixedly connected with the supporting base (2) through a plurality of supporting upright columns (3), and the supporting table board (4) supports and fixes the bearing box (5).
10. The control method of the automatic bearing press-fitting unit based on shaft fixation as claimed in any one of claims 1 to 9, wherein:
firstly, an operator puts the shaft (7) and the bearing (6) on the bearing box (5) and then starts the unit;
controlling the lifting mechanism to enable the output end of the lifting mechanism to descend to a descending position;
controlling the clamping oil cylinder (22) to drive the clamping plate assembly to be pressed upwards, so that the clamping tool (27) clamps the shaft (7);
judging whether the shaft (7) needs to be lifted for a set distance according to the process parameters, and if so, controlling the lifting mechanism to enable the output end of the lifting mechanism to rise to a working position; if the shaft (7) is not required to be lifted, the descending position of the output end of the lifting mechanism is a working position;
controlling the servo press (18) to drive a pressing plate (29), pressing the bearing (6) downwards through the pressing plate (29), enabling the inner ring of the bearing (6) to be matched with the shaft (7) in place, and returning the servo press (18) to the original position after pressing;
controlling the clamping oil cylinder (22) to drive the clamping plate assembly to return to the original position downwards, so that the clamping tool (27) loosens the shaft (7);
controlling the servo press (18) to drive the pressing plate (29), pressing the bearing (6) downwards for the second time through the pressing plate (29), enabling the outer ring of the bearing (6) to be matched with the bearing box (5) in place, and returning the servo press (18) to the original position after pressing;
controlling the lifting mechanism to enable the output end of the lifting mechanism to rise to the original position; and waiting for executing the next press mounting work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110598250.XA CN113305542B (en) | 2021-05-31 | 2021-05-31 | Automatic bearing press-fitting unit based on shaft fixing and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110598250.XA CN113305542B (en) | 2021-05-31 | 2021-05-31 | Automatic bearing press-fitting unit based on shaft fixing and control method thereof |
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| Publication Number | Publication Date |
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| CN113305542A true CN113305542A (en) | 2021-08-27 |
| CN113305542B CN113305542B (en) | 2024-08-23 |
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| CN202110598250.XA Active CN113305542B (en) | 2021-05-31 | 2021-05-31 | Automatic bearing press-fitting unit based on shaft fixing and control method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113370120A (en) * | 2021-08-16 | 2021-09-10 | 江苏优霸五金工具有限公司 | Fixed frock clamp that counterpoints of hardware and tools assembly |
| CN113681286A (en) * | 2021-08-31 | 2021-11-23 | 泛仕达机电股份有限公司 | Assembly and check out test set of water pump assembly |
| CN113681286B (en) * | 2021-08-31 | 2022-06-14 | 泛仕达机电股份有限公司 | Assembly and check out test set of water pump assembly |
| CN115213666A (en) * | 2022-07-26 | 2022-10-21 | 常州航空工模具有限公司 | Automatic bearing pressing device for automobile motor production |
| CN115213666B (en) * | 2022-07-26 | 2024-02-23 | 常州航空工模具有限公司 | Automatic bearing pressing device for automobile motor production |
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