CN211916306U - Marine crankshaft crank throw journal undercut fillet grinding device - Google Patents
Marine crankshaft crank throw journal undercut fillet grinding device Download PDFInfo
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- CN211916306U CN211916306U CN202020532115.6U CN202020532115U CN211916306U CN 211916306 U CN211916306 U CN 211916306U CN 202020532115 U CN202020532115 U CN 202020532115U CN 211916306 U CN211916306 U CN 211916306U
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- guide block
- slip
- adjustable guide
- crankshaft
- grinding device
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Abstract
The utility model discloses a marine bent axle crank throw axle journal undercut fillet grinding device, including slips, slips hinge, air mill, adjustable guide block, guide block locking screw group, base. The slips are wound into a cylinder shape and sleeved on the shaft diameter of the crankshaft. And a slip hinge is arranged on the outer side end face of the slip and is fixedly connected with the base. The air mill is provided with at least one adjustable guide block, one end of the adjustable guide block is slidably arranged on the guide block locking group, and the driving end of the air mill is provided with a grinding wheel grinding head. The guide block locking group is fixed on the base. The utility model discloses simple light, with low costs, have stronger flexibility, the big problem of the fillet undercut grinding degree of difficulty when effectively solving the eccentric rotation of crank throw. Meanwhile, the device can be used on any excircle lathe or polishing machine tool according to the processing requirements, and new processing equipment does not need to be purchased.
Description
Technical Field
The utility model belongs to the technical field of the diesel engine crankshaft machining, concretely relates to marine bent axle crank throw axle journal undercut fillet grinding device.
Background
Along with the increasing processing and manufacturing level of marine crankshafts, the processing requirements of crankshaft fillets are more and more strict, and particularly, the requirements are relatively strict for avoiding stress concentration in the process of machining undercut fillets of crank throw journals. The crank grinding machine can not realize the undercut during grinding, and the undercut of the fillet is realized mostly by adopting the mode that an artificial abrasive belt is matched with a rotary file to polish the fillet due to various and less-batch production modes of marine crankshaft types. However, the processing mode has the defects that the fillet size and the depth are not uniform due to manual control of the force, and particularly, the roller is not attached to the fillet of the crankshaft directly due to the crankshaft needing rolling reinforcement in the later period; in addition, the processing mode has high strength and low efficiency for operators.
Aiming at the problem, in a part of enterprises with higher-end processing equipment, the processing mode of turning round corners by numerical control programming is adopted, and the processing of undercut round corners can be realized; however, the turning process and the grinding process are different in equipment, secondary clamping is needed, the weight of the marine crankshaft is increased, clamping deformation is easy to occur, and secondary clamping, processing and alignment are more labor-consuming and time-consuming; although the round shape of numerical control programming processing is more standard, because the bent axle warp, the condition that the bent axle fillet depth is different can appear after the grinding, and the laminating condition is unstable when the bent axle fillet is reinforceed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: overcome prior art's is not enough, provides a marine bent axle crank throw axle journal undercut fillet grinding device, the utility model discloses simple light, with low costs, have stronger flexibility, the fillet undercut grinding degree of difficulty is big when effectively solving crank throw eccentric rotation's problem. Meanwhile, the device can be used on any excircle lathe or polishing machine tool according to the processing requirements, and new processing equipment does not need to be purchased.
The utility model provides a technical scheme that the problem that its exists adopted is:
a marine crankshaft crank throw journal undercut fillet grinding device comprises slips, a slip hinge, a wind mill, an adjustable guide block, a guide block locking screw group and a base.
The slips are wound into a cylinder shape and sleeved on the shaft diameter of the crankshaft.
And a slip hinge is arranged on the outer side end face of the slip and is fixedly connected with the base.
The air mill is provided with at least one adjustable guide block, one end of the adjustable guide block is slidably arranged on the guide block locking group, and the driving end of the air mill is provided with a grinding wheel grinding head.
The guide block locking group is fixed on the base.
Preferably, the inner side end face of the slip is provided with a lining.
Preferably, at least one nylon stop block is arranged on each of two sides of the slip.
Preferably, the air mill is provided with two adjustable guide blocks, and the base is fixed with two guide block locking groups matched with the adjustable guide blocks for use.
Preferably, the guide block locking group comprises an arc-shaped plate and a fastening screw, an arc-shaped chute is formed in the arc-shaped plate, one end of the adjustable guide block is slidably arranged in the arc-shaped chute, the fastening screw is in threaded connection with the adjustable guide block, and the adjustable guide block is fixed after the fastening screw is screwed down.
Preferably, the slip hinge is fixedly connected with the base through a locking bolt group.
Preferably, the locking bolt set comprises a bolt, a nut and a gasket.
Compared with the prior art, the utility model discloses beneficial effect who has:
(1) the device is simple and portable, and can be used on any excircle lathe or polishing machine according to the processing requirement.
(2) The crankshaft only needs to be normally clamped and tightly pushed against the central hole, secondary alignment is not needed, the slips are sleeved on the shaft neck, and the angle is adjusted by sliding the adjustable guide block in the arc-shaped slide way, so that the grinding wheel grinding head is fully contacted with the crankshaft fillet. When the crank throw grinding tool is used, the crank throw grinding tool has high flexibility and solves the problem that fillet undercut grinding difficulty is high when the crank throw rotates eccentrically.
(3) Through the matching use of a set of slips for clamping the shaft neck, the air mill and the grinding wheel grinding head, the grinding heads with different shapes can be replaced according to the size of the fillet of the crankshaft and the requirement of attachment, and the grinding wheel grinding head is convenient to use and low in cost.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a figure of the marine grinding device for sink-cutting fillet of crank throw journal of crankshaft of the utility model,
FIG. 2 is a diagram showing the effect of the installation of the present invention on the crankshaft,
fig. 3 is a rear side view of the present invention installed on the crankshaft.
In the figure, 1-crankshaft, 2-slip, 3-bush, 4-nylon block, 5-slip hinge, 6-grinding wheel grinding head, 7-air mill, 8-adjustable guide block, 9-locking bolt group, 10-air pipe, 11-guide block locking group, 1101-arc plate, 11011-arc chute, 1102-fastening screw and 12-base.
Detailed Description
The attached drawings are the best embodiments of the marine crankshaft crank throw shaft neck undercut fillet grinding device, and the invention is further described in detail below with reference to the attached drawings.
As shown in attached drawings 1, 2 and 3, the marine crankshaft crank throw journal undercut fillet grinding device comprises a slip 2, a slip hinge 5, an air mill 7, an adjustable guide block 8, a guide block locking screw group 11 and a base 12.
The slips 2 are wound into a cylinder shape and sleeved on the shaft diameter of the crankshaft 1. The end face of the inner side of the slip 2 is provided with the lining 3, the shaft diameter of the slip 2 and the shaft diameter of the crankshaft 1 are isolated by the lining 3, and the slip 2 is prevented from scratching the shaft diameter of the crankshaft 1. At least one nylon stop block 4 is respectively arranged on two sides of the slip 2. The nylon stop block 4 isolates the slip 2 from the inner side surface of the crank arm of the crankshaft 1, and the slip 2 is prevented from scratching the inner side surface of the crank arm of the crankshaft 1.
And a slip hinge 5 is arranged on the outer side end face of the slip 2, and the slip hinge 5 is fixedly connected with the base 12 through a locking bolt group 9. The locking bolt group 9 comprises a bolt, a nut and a gasket, wherein one end of the bolt penetrates through the slip hinge 5 and the base 12 and is in threaded connection with the nut. And (3) taking down the nut, separating the slip hinge 5 from the base 12, and completing the operation of installing or removing the slip 2 on the axial diameter of the crankshaft 1.
The air mill 7 is provided with at least one adjustable guide block 8, one end of the adjustable guide block 8 is slidably arranged on the guide block locking group 11, and the driving end of the air mill 7 is provided with the grinding wheel grinding head 6. The guide block locking group 11 is fixed on the base 12. The guide block locking group 11 comprises an arc plate 1101 and a fastening screw 1102. The arc plate 1101 is fixed on the base 12, an arc sliding groove 11011 is formed in the arc plate 1101, and one end of the adjustable guide block 8 is slidably arranged inside the arc sliding groove 11011. The fastening screw 1102 is in threaded connection with the adjustable guide block 8, and after the fastening screw 1102 is screwed down, the adjustable guide block 8 is fixed.
In this embodiment, the air mill 7 is provided with two adjustable guide blocks 8, and the base 12 is fixed with two guide block locking sets 11 used in cooperation with the adjustable guide blocks 8.
When the slip hinge is used, the slip 2 is sleeved on the shaft diameter of the crankshaft 1, and the slip hinge 5 is fixedly connected with the base 12 through the locking bolt assembly 9. The adjustable guide block 8 slides along the arc-shaped sliding groove 11011, and the angle of the grinding wheel head 6 at the driving end of the air mill 7 is adjusted, so that the position of the grinding wheel head 6 and the crank shaft diameter of the crankshaft 1, which needs to grind a round angle, is eliminated. The air tube 10 is then connected to the air mill 7.
The air mill 7 and the grinding wheel grinding head 6 are rotated by starting the machine tool to rotate and connecting an air source, and the grinding of the round corner on one side of the shaft diameter of the crankshaft 1 can be finished within about 30 seconds.
After the round corners on the same side are polished, the round corners on the other side of the shaft diameter of the crankshaft 1 can be polished by adjusting the position of the adjustable guide block 8; two or more sets of marine crankshaft crank throw journal undercut fillet grinding devices can be directly used, and different crank throw journal fillets on the crankshaft 1 can be ground simultaneously, so that the efficiency is higher.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. The utility model provides a marine bent axle crank throw axle journal undercut fillet grinding device which characterized in that:
comprises slips (2), a slip hinge (5), an air mill (7), an adjustable guide block (8), a guide block locking group (11) and a base (12),
a plurality of slips (2) are encircled into a cylinder shape and sleeved on the shaft diameter of the crankshaft (1),
the outer side end face of the slip (2) is provided with a slip hinge (5), the slip hinge (5) is fixedly connected with the base (12),
at least one adjustable guide block (8) is arranged on the air mill (7), one end of the adjustable guide block (8) is slidably arranged on the guide block locking group (11), the driving end of the air mill (7) is provided with a grinding wheel grinding head (6),
the guide block locking group (11) is fixed on the base (12).
2. The marine crankshaft bell crank journal undercut fillet grinding device of claim 1, characterized in that:
and a lining (3) is arranged on the end surface of the inner side of the slip (2).
3. The marine crankshaft bell crank journal undercut fillet grinding device of claim 1, characterized in that:
at least one nylon stop block (4) is respectively arranged on two sides of the slip (2).
4. The marine crankshaft bell crank journal undercut fillet grinding device of claim 1, characterized in that:
the air mill (7) is provided with two adjustable guide blocks (8), and the base (12) is fixed with two guide block locking groups (11) which are matched with the adjustable guide blocks (8).
5. The marine crankshaft bell crank journal undercut fillet grinding device of claim 1, characterized in that:
guide block locking group (11) include arc (1101) and fastening screw (1102), be equipped with arc spout (11011) on arc (1101), adjustable guide block (8) one end slides and sets up inside arc spout (11011), fastening screw (1102) and adjustable guide block (8) threaded connection, after screwing up fastening screw (1102), adjustable guide block (8) are fixed motionless.
6. The marine crankshaft bell crank journal undercut fillet grinding device of claim 1, characterized in that:
the slip hinge (5) is fixedly connected with the base (12) through a locking bolt group (9).
7. The marine crankshaft bell crank journal undercut fillet grinding device of claim 6, characterized in that:
the locking bolt group (9) comprises a bolt, a nut and a gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020532115.6U CN211916306U (en) | 2020-04-13 | 2020-04-13 | Marine crankshaft crank throw journal undercut fillet grinding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020532115.6U CN211916306U (en) | 2020-04-13 | 2020-04-13 | Marine crankshaft crank throw journal undercut fillet grinding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211916306U true CN211916306U (en) | 2020-11-13 |
Family
ID=73375379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020532115.6U Active CN211916306U (en) | 2020-04-13 | 2020-04-13 | Marine crankshaft crank throw journal undercut fillet grinding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211916306U (en) |
-
2020
- 2020-04-13 CN CN202020532115.6U patent/CN211916306U/en active Active
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