CN111203785A - Marine crankshaft polishing machine - Google Patents
Marine crankshaft polishing machine Download PDFInfo
- Publication number
- CN111203785A CN111203785A CN202010165202.7A CN202010165202A CN111203785A CN 111203785 A CN111203785 A CN 111203785A CN 202010165202 A CN202010165202 A CN 202010165202A CN 111203785 A CN111203785 A CN 111203785A
- Authority
- CN
- China
- Prior art keywords
- tailstock
- guide rail
- crankshaft
- fixed
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/02—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces
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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
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/18—Accessories
-
- 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
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/18—Accessories
- B24B21/20—Accessories for controlling or adjusting the tracking or the tension of the grinding belt
Abstract
The invention discloses a marine crankshaft polishing machine which comprises a machine body, wherein a first guide rail and a second guide rail are arranged on the machine body and are parallel; a tailstock moving plate is arranged at one end of the first guide rail, a tailstock is fixedly arranged on the tailstock moving plate, and a fixed tailstock is arranged at the other end of the first guide rail; a driving device is fixedly arranged above the fixed tailstock; a moving platform is arranged on the second guide rail, and a polishing arm is arranged on the moving platform; the invention has the advantages that: 1. the tailstock is used for adjusting crankshafts with different lengths, and the radial adjusting structure of the mobile platform is also suitable for adjusting crankshafts with different diameters; 2. the tail seat and the driving device are integrated, the driving rod is used for driving the crankshaft to rotate, and the driving device with a large size is not arranged at the end part of the crankshaft, so that the structure is simple, and the centering effect is better. 3. The stroke adjusting device ensures the up-and-down movement of the bearing below the tailstock moving plate, and the crankshaft can be transported through the tailstock moving plate.
Description
Technical Field
The invention relates to the field of machinery, in particular to a polishing machine, and more particularly relates to a crankshaft polishing machine.
Background
The crankshaft for ship is the main rotating part in the engine of ship engine, and after the connecting rod is installed, the crankshaft can bear the up-and-down (reciprocating) motion of the connecting rod and change it into circulating (rotating) motion. The relative rotation of high load exists between the bearing bush of the connecting rod and the crankshaft journal, and the requirement of higher form and position tolerance is also met for the surface of the crankshaft journal besides the requirement of higher surface roughness. The surface of the ground crankshaft journal has vibration lines which cannot meet the required form and position tolerance requirements, and the vibration lines are removed by adopting a polishing method to meet the form and position tolerance requirements of the crankshaft.
The crankshaft polishing machine is important mechanical equipment in crankshaft machining, and the outer surface of a crankshaft is polished by the crankshaft polishing machine so as to improve the surface roughness of the crankshaft and meet the requirement of form and position tolerance of the crankshaft. How big research and development is carried out to automobile-used engine crankshaft to current burnishing machine. And for the marine crankshaft with the axial dimension more than 2m, a special polishing machine is not arranged, the conventional processing method is to manually polish the shaft neck by directly adopting sand paper, the polishing quality in the polishing operation process is completely determined by the experience of an operator, the polishing mode is troublesome and labor-consuming, the polishing efficiency is not high, and the quality is not ensured.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide a polishing machine, which can be adjusted according to the size of a crankshaft, and can set the pressure of a polishing belt on the crankshaft by using a weight block, thereby ensuring the polishing precision. The specific technical scheme is as follows:
the utility model provides a marine bent axle burnishing machine, includes the lathe bed, its characterized in that: a first guide rail and a second guide rail are arranged on the bed body, and the first guide rail is parallel to the second guide rail; a tailstock moving plate is arranged at one end of the first guide rail, a tailstock is fixedly arranged on the tailstock moving plate, and a fixed tailstock is arranged at the other end of the first guide rail; a driving device is fixedly arranged above the fixed tailstock; a moving platform is arranged on the second guide rail, and a polishing arm is arranged on the moving platform;
the tailstock moving plate is provided with a stroke adjusting device, the stroke adjusting device comprises a bearing, the bearing is fixed on a bearing support plate, one end of the bearing support plate is connected with the bottom plate in a shaft mode, the other end of the bearing support plate is abutted to an adjusting bolt, and the adjusting bolt is screwed in a screw hole in the bottom plate; the tailstock is fixed on the bottom plate through a bolt;
a positioning hole is formed in the lower portion of one side, back to the fixed tailstock, of the tailstock moving plate, a positioning block is inserted into the positioning hole, a screw hole is formed in the positioning block, and a positioning bolt is tightly screwed in the screw hole and abutted against the tailstock moving plate;
the driving device comprises a rotating motor and a speed reducer, the rotating motor is connected with the speed reducer, an output shaft of the speed reducer is connected with a driving plate through a gear, a driving lever is arranged on the surface of the driving plate, and the driving lever is embedded into the end part of the crankshaft to drive the crankshaft to rotate;
a support plate below the mobile platform is provided with a roller, and the roller rolls on a second guide rail; the section of the second guide rail is in a U shape with an outward opening, the inner side of the second guide rail is abutted against an eccentric wheel, and the eccentric wheel is fixed on the support plate; the upper part of the movable platform is connected with the polishing arm through a bolt;
the polishing arm comprises a frame, the frame comprises a rotating arm, the rotating arm is in shaft connection with a support fixed on a mobile platform, an L-shaped support arm is fixed above the rotating arm, a tension wheel is arranged in the middle of the support arm, a driven wheel is arranged at the tail end below the support arm, and a balancing weight is arranged at the tail end above the support arm; the polishing motor is fixed on the rotating arm, an output shaft of the polishing motor is connected with the driving wheel, and the polishing belt bypasses the tension wheel, the driven wheel and the driving wheel; part of the outer side surface of the polishing belt is abutted against the outer side surface of the crankshaft.
And a deep groove ball bearing is arranged on the outer side of the eccentric wheel and is abutted against the inner side of the second guide rail.
The rotating shaft of the tensioning wheel is arranged on a sliding block, the sliding block is provided with a T-shaped groove in the vertical direction, the upper end of an upper adjusting bolt and the lower end of the upper adjusting bolt are connected with the hand wheel in a screwing mode, and the lower end of the upper adjusting bolt and the lower end of the lower adjusting bolt are connected with the T-shaped groove in a screwing mode.
The balancing weight is a plurality of blocks which are fixed into a whole by bolts.
The speed reducer is a cycloidal pin speed reducer, a pinion is mounted at the output end of the cycloidal pin speed reducer, and the pinion is meshed with a gear on the outer side of the drive plate.
The moving platform further comprises a brake device, the brake device comprises a clamping block, a bolt hole is formed in one side of the clamping block, and a brake bolt is rotated to pass through the bolt hole and then is abutted to the second rail.
The invention has the advantages that:
1. the tailstock is used for adjusting crankshafts with different lengths, and the radial adjusting structure of the mobile platform is also suitable for adjusting crankshafts with different diameters;
2. the tail seat and the driving device are integrated, the driving rod is used for driving the crankshaft to rotate, and the driving device with a large size is not arranged at the end part of the crankshaft, so that the structure is simple, and the centering effect is better.
3. The tailstock moving plate is provided with a stroke adjusting device to ensure that a bearing below the tailstock moving plate moves up and down, and a crankshaft can be transported through the tailstock moving plate; in addition, the device can be used for adjusting the machining height of the crankshaft.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3-1 is a schematic view of a height adjusting device of the tailstock moving plate;
FIG. 3-2 is a schematic structural view of the stroke adjusting device;
FIG. 4 is a schematic structural diagram of a driving device;
FIG. 5 is a left side view of FIG. 4;
FIG. 6-1 is a schematic structural diagram of a mobile platform;
FIG. 6-2 is a schematic structural view of the braking device;
FIG. 7 is a schematic view of a polishing arm configuration;
FIG. 8-1 is a schematic structural view of an adjusting device of the tension roller;
fig. 8-2 is a cross-sectional view of fig. 8-1 taken along the axis of the jack bolt.
Detailed Description
The invention is specifically described below with reference to the accompanying drawings, and as shown in the figures, the invention comprises a bed 1, wherein a first guide rail 101 and a second guide rail 102 are arranged on the bed, and the first guide rail and the second guide rail are parallel; a tailstock moving plate 31 is arranged at one end of the first guide rail, a tailstock 3 is fixedly arranged on the tailstock moving plate, and a driving device 6 is fixedly arranged above the fixed tailstock at the other end of the first guide rail; a moving platform 4 is arranged on the second guide rail, and a polishing arm 5 is arranged on the moving platform; the tailstock moving plate 31 and the moving platform 4 are both provided with stabilizing devices;
the tailstock moving plate 34 is provided with a stroke adjusting device, the stroke adjusting device comprises a plurality of groups of bearings 32 rolling on the first track, the bearings are fixed on a bearing support plate 33, one end of the bearing support plate 33 is connected with the bottom plate 34 in a shaft mode, the other end of the bearing support plate is connected with an adjusting bolt 35 in a butt mode, and the adjusting bolt 35 is screwed in a screw hole in the bottom plate 34; the tailstock 3 is fixed on the bottom plate through a bolt; when the adjusting bolt is rotated, the end part of the adjusting bolt is abutted against the bearing support plate, so that the bearing support plate rotates around a shaft connected with the bottom plate, the height of the tailstock moving plate 34 in the vertical direction can be adjusted, the bearing is further ensured to be exposed out of the lower part of the tailstock moving plate so as to roll on the first guide rail, and the bearing crankshaft can move along the first guide rail; when the crankshaft reaches the processing position, the bearing is retracted by rotating the adjusting bolt, the tailstock moving plate falls on the first guide rail, then the positioning block 36 is inserted into the positioning hole 38 arranged below one side of the tailstock moving plate, which is back to the fixed tailstock, the positioning block 36 is provided with a screw hole, and the positioning bolt 37 is screwed in the screw hole and is abutted against the bottom plate 34 of the tailstock moving plate; therefore, axial force can be applied to the crankshaft through the tailstock moving plate, and the two ends of the crankshaft are guaranteed to be clamped; after the machining is finished, the adjusting bolt is rotated to expose the bearing out of the tailstock moving plate, so that the bearing can be moved out by using the tailstock moving plate.
The driving device comprises a rotating motor 65 and a speed reducer 61, the rotating motor is connected with the speed reducer, an output shaft of the speed reducer is connected with a driving plate 63 through a gear, a driving lever 64 is arranged on the surface of the driving plate, and the driving lever is embedded into the end part of the crankshaft to drive the crankshaft to rotate;
a roller 43 is arranged on a support plate 41 below the mobile platform 4, and the roller rolls on a second guide rail 102; the section of the second guide rail is in a U shape with an outward opening, the inner side of the second guide rail is abutted with an eccentric wheel, and the eccentric wheel 45 is fixed on the support plate 41; the upper bracket 42 of the moving platform is connected with the polishing arm 5 through a bolt;
the polishing arm comprises a frame, the frame comprises a rotating arm 51, the rotating arm is coupled with a support 46 fixed on the mobile platform 4 through a shaft 54, an L-shaped supporting arm 56 is fixed above the rotating arm 51, a tension wheel 55 is arranged in the middle of the supporting arm 56, a driven wheel 57 is arranged at the tail end below the supporting arm, and a balancing weight 52 is arranged at the tail end above the supporting arm; the polishing motor 57 is fixed on the rotating arm 51, an output shaft of the polishing motor is connected with the driving wheel 53, and the polishing belt 50 bypasses the tension wheel 55, the driven wheel 57 and the driving wheel 53; part of the outer side surface of the polishing belt is abutted against the outer side surface of the crankshaft.
The outer side of the eccentric wheel 45 is provided with a deep groove ball bearing 44 which is abutted with the inner side of the second guide rail 102; therefore, the position of the moving platform 4 vertical to the direction of the second guide rail can be adjusted by rotating the eccentric wheel;
as shown in fig. 8-1 and 8-2, the rotating shaft 551 of the tension roller 55 is disposed on the slider 58, the slider is disposed in the sliding base 583, and the sliding base 583 is fixed on the arm 56;
the slider 58 is provided with a T-shaped groove 582 in the vertical direction, the upper end of the upper and lower adjusting bolt 581 is screwed with the hand wheel 59, and the lower end of the upper and lower adjusting bolt 581 is screwed with the T-shaped groove 582.
The balancing weight is a plurality of blocks which are fixed into a whole by bolts.
The speed reducer 61 is a cycloidal pin speed reducer, a pinion 62 is arranged at the output end of the cycloidal pin speed reducer, and the pinion 62 is meshed with a gear on the outer side of the drive plate 63.
In order to ensure the fixing of the moving platform, the fixing device further comprises a brake device, the brake device comprises a clamping block 48, the clamping block is fixed at the end of the moving platform and is provided with a groove 481, the groove is arranged on the outer side of the second guide rail 102, one side of the clamping block is provided with a bolt hole, and the brake bolt 47 is in butt joint with the second rail after passing through the bolt hole in a rotating mode.
The invention utilizes the centers of the two ends of the tailstock to position and clamp the center of the crankshaft in the air, and uses the transmission mode of the driving plate to rotate the crankshaft, so that the mode that one end of the crankshaft is clamped by the chuck and the other end of the crankshaft is centered is adopted, the structure is simple, the centering effect is good, and the need of configuring an additional rotary driving device is avoided.
In order to realize automatic operation, a PLC is also arranged and is connected with each motor, so that the rotating speed of the polishing belt can be automatically controlled; the invention can adjust the pressure applied on the surface of the crankshaft in the polishing process by pre-adjusting the balancing weight.
The rotating shaft of the eccentric wheel can be connected with an output shaft of a servo motor, and the polishing pressure is adjusted by adjusting the adjustment of the radial position of the movable platform along the crankshaft through the rotation of the servo motor; and the servo motor is also connected with the PLC.
Claims (6)
1. The utility model provides a marine bent axle burnishing machine, includes the lathe bed, its characterized in that: a first guide rail and a second guide rail are arranged on the bed body, and the first guide rail is parallel to the second guide rail; a tailstock moving plate is arranged at one end of the first guide rail, a tailstock is fixedly arranged on the tailstock moving plate, and a fixed tailstock is arranged at the other end of the first guide rail; a driving device is fixedly arranged above the fixed tailstock; a moving platform is arranged on the second guide rail, and a polishing arm is arranged on the moving platform;
the tailstock moving plate is provided with a stroke adjusting device, the stroke adjusting device comprises a bearing, the bearing is fixed on a bearing support plate, one end of the bearing support plate is connected with the bottom plate in a shaft mode, the other end of the bearing support plate is abutted to an adjusting bolt, and the adjusting bolt is screwed in a screw hole in the bottom plate; the tailstock is fixed on the bottom plate through a bolt;
a positioning hole is formed in the lower portion of one side, back to the fixed tailstock, of the tailstock moving plate, a positioning block is inserted into the positioning hole, a screw hole is formed in the positioning block, and a positioning bolt is tightly screwed in the screw hole and abutted against the tailstock moving plate;
the driving device comprises a rotating motor and a speed reducer, the rotating motor is connected with the speed reducer, an output shaft of the speed reducer is connected with a driving plate through a gear, a driving lever is arranged on the surface of the driving plate, and the driving lever is embedded into the end part of the crankshaft to drive the crankshaft to rotate;
a support plate below the mobile platform is provided with a roller, and the roller rolls on a second guide rail; the section of the second guide rail is in a U shape with an outward opening, the inner side of the second guide rail is abutted against an eccentric wheel, and the eccentric wheel is fixed on the support plate; the upper part of the movable platform is connected with the polishing arm through a bolt;
the polishing arm comprises a frame, the frame comprises a rotating arm, the rotating arm is in shaft connection with a support fixed on a mobile platform, an L-shaped support arm is fixed above the rotating arm, a tension wheel is arranged in the middle of the support arm, a driven wheel is arranged at the tail end below the support arm, and a balancing weight is arranged at the tail end above the support arm; the polishing motor is fixed on the rotating arm, an output shaft of the polishing motor is connected with the driving wheel, and the polishing belt bypasses the tension wheel, the driven wheel and the driving wheel; part of the outer side surface of the polishing belt is abutted against the outer side surface of the crankshaft.
2. The marine crankshaft buffing machine of claim 1 further comprising: and a deep groove ball bearing is arranged on the outer side of the eccentric wheel and is abutted against the inner side of the second guide rail.
3. The marine crankshaft buffing machine of claim 1 further comprising: the rotating shaft of the tensioning wheel is arranged on a sliding block, the sliding block is provided with a T-shaped groove in the vertical direction, the upper end of an upper adjusting bolt and the lower end of the upper adjusting bolt are connected with the hand wheel in a screwing mode, and the lower end of the upper adjusting bolt and the lower end of the lower adjusting bolt are connected with the T-shaped groove in a screwing mode.
4. The marine crankshaft buffing machine of claim 1 further comprising: the balancing weight is a plurality of blocks which are fixed into a whole by bolts.
5. The marine crankshaft buffing machine of claim 1 further comprising: the speed reducer is a cycloidal pin speed reducer, a pinion is mounted at the output end of the cycloidal pin speed reducer, and the pinion is meshed with a gear on the outer side of the drive plate.
6. The marine crankshaft buffing machine of claim 1 further comprising: the moving platform further comprises a brake device, the brake device comprises a clamping block, a bolt hole is formed in one side of the clamping block, and a brake bolt is rotated to pass through the bolt hole and then is abutted to the second rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010165202.7A CN111203785A (en) | 2020-03-11 | 2020-03-11 | Marine crankshaft polishing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010165202.7A CN111203785A (en) | 2020-03-11 | 2020-03-11 | Marine crankshaft polishing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111203785A true CN111203785A (en) | 2020-05-29 |
Family
ID=70781674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010165202.7A Pending CN111203785A (en) | 2020-03-11 | 2020-03-11 | Marine crankshaft polishing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111203785A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116117454A (en) * | 2023-04-14 | 2023-05-16 | 河北卡玛液压机械有限公司 | Hot charging process for heavy mine car suspension assembly |
-
2020
- 2020-03-11 CN CN202010165202.7A patent/CN111203785A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116117454A (en) * | 2023-04-14 | 2023-05-16 | 河北卡玛液压机械有限公司 | Hot charging process for heavy mine car suspension assembly |
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