CN215374338U - Device for assisting in supporting and axially positioning crankshaft - Google Patents
Device for assisting in supporting and axially positioning crankshaft Download PDFInfo
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- CN215374338U CN215374338U CN202121394668.0U CN202121394668U CN215374338U CN 215374338 U CN215374338 U CN 215374338U CN 202121394668 U CN202121394668 U CN 202121394668U CN 215374338 U CN215374338 U CN 215374338U
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- crankshaft
- bearing body
- bearing
- limiting
- swing frame
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Abstract
A device for assisting in supporting and axially positioning a crankshaft is used for supporting and axially positioning a main journal of the crankshaft. Arc grooves and connecting blocks at two ends of the supporting frame are fixedly connected with the cylindrical guide rail, the bearing body is matched with the arc of the supporting frame, two positioning pins fixed on the supporting frame are clamped in key grooves on the arc of the bearing body to position the bearing body, the auxiliary supporting block is fixed on one side of the bearing body, and limiting blocks are arranged on two sides of the supporting frame to tightly press the bearing body; the limiting bearing seat is fixed on one side of the bearing body, the limiting rod penetrates through a limiting bearing seat hole to tension one end of the limiting rod through a first bolt, the other end of the limiting rod is in interference fit with the rolling bearing, and a third bolt is in threaded connection with the limiting bearing seat and abuts against the limiting rod. The rolling bearing is positioned at the outer sides of M4 and M2 main journals of the crankshaft and is in contact with the end faces of the main journals, and when the crankshaft is subjected to dynamic balance test and correction, the rolling bearing rotates along with the rotation of the crankshaft, so that the axial positioning effect is realized, and the friction force is reduced.
Description
Technical Field
The utility model relates to the technical field of automobile part manufacturing, in particular to a crankshaft auxiliary supporting and axial positioning device for an automatic single-station crankshaft balance correcting machine.
Background
The process flow of crankshaft manufacturing comprises the following steps: the method comprises the steps of fine grinding a spindle, a connecting rod shaft neck and an end face, machining threaded holes and pin holes in two ends of a crankshaft, fine grinding big and small heads, milling a balance block key groove and performing dynamic balance test. The dynamic balance belongs to the process after finish machining, all mechanical cutting of the crankshaft is completed, and the accuracy of the dynamic balance test of the finished crankshaft can be ensured only in this way. When the crankshaft rotates, the automatic single-station crankshaft balance correcting machine for testing and correcting the dynamic balance of the crankshaft does not have an axial positioning device which rotates along with the crankshaft except for the support on the main journal of the crankshaft, so that when the crankshaft performs dynamic balance testing and correcting, hard friction is generated between the main journal of the crankshaft and the support, the support precision and the axial positioning precision of the crankshaft are influenced, and even the main journal of the crankshaft is damaged.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a device for assisting in supporting and axially positioning a crankshaft so as to assist in supporting and axially positioning the crankshaft.
In order to realize the purpose, arc-shaped grooves and connecting blocks at two ends of a supporting frame are fixedly connected with a cylindrical guide rail of a crankshaft dynamic balance swing frame vibration system, a bearing body is matched with the arc of the supporting frame, two positioning pins fixed on the supporting frame are clamped in key grooves on the arc of the bearing body to position the bearing body, an auxiliary supporting block is fixed at one side of the bearing body by adopting two flat-head screws, and limiting blocks are arranged at two sides of the supporting frame to tightly press the bearing body; the limiting bearing seat is fixed on one side of the bearing body through a second bolt, a limiting rod penetrates through a hole of the limiting bearing seat and tightens one end of the limiting rod through the first bolt, the other end of the limiting rod is in interference fit with the rolling bearing, a third bolt is in threaded connection with the limiting bearing seat and abuts against the limiting rod to prevent the limiting rod from rotating, a lubricating oil channel is arranged on the bearing body, a lubricating oil pipe is arranged at the bottom of the connecting block and communicated with the lubricating oil channel, high-pressure oil mist is sprayed out of the lubricating oil channel through the lubricating oil pipe to lubricate the end face of a main journal and the excircle contact surface of the crankshaft; the rolling bearings are positioned at the outer sides of the main journals M4 and M2 of the crankshaft and are in contact with the end faces of the main journals M4 and M2 of the crankshaft, and the rolling bearings rotate along with the rotation of the crankshaft.
The cylinder guide rail is placed in the semicircular groove on the left swing frame cross beam and the right swing frame cross beam, four shaft covers are pressed on the two cylinder guide rails, the cylinder guide rail is fixedly connected with the left swing frame cross beam and the right swing frame cross beam through bolts, the cylinder guide rail is connected with the swing frame seat through four cylinder variable cross-section spring rods, two support columns are arranged between the cylinder guide rail and the swing frame seat, and the lower end of the two support columns is fixed on the swing frame seat. The swing frame seat is arranged on a horizontal support seat at the front half part of a lathe bed of the automatic single-station crankshaft balance correcting machine.
Compared with the prior art, the rolling bearing is positioned at the outer sides of the M4 and M2 main journals of the crankshaft and is in contact with the end faces of the M4 and M2 main journals of the crankshaft, when the crankshaft is subjected to dynamic balance test and correction, the rolling bearing rotates along with the rotation of the crankshaft, so that the axial positioning effect is realized, the friction force is reduced, the damage of scratch and abrasion on the end faces of the finished main journals is avoided, and the radial supporting precision and the axial positioning precision of the crankshaft and the manufacturing quality of the crankshaft are greatly improved.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is an enlarged view I of fig. 1.
Fig. 3 is a schematic diagram of a crankshaft.
Fig. 4 is a schematic view of the connection structure of the positioning device and the crankshaft dynamic balance pendulum frame vibration system.
Fig. 5 is a top view of fig. 4.
In the figure: 1. a flat head screw; 2. positioning pins; 3. a lubricating oil pipe; 4. an auxiliary support block; 5. a bearing body; 6. a support frame; 7. connecting blocks; 8. a limiting block; 9. a rolling bearing; 10. a limiting rod; 11. a limiting bearing seat; 12. a first bolt; 13. a third bolt; 14. a second bolt; 15. a lubricating oil passage; 16. a crankshaft; 17. a cylindrical guide rail; 18. a shaft cover; 19. a pillar; 20. a cylindrical spring rod with a variable cross section; 21. a pendulum mount; 22. a left swing frame beam; 23. a right swing frame beam; 24. the end face of the main journal.
Detailed Description
As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, arc-shaped grooves and connecting blocks 7 at two ends of a support frame 6 are fixedly connected with a cylindrical guide rail 17 of a crankshaft dynamic balance swing frame vibration system, a bearing body 5 is matched with the support frame 6 in an arc manner, two positioning pins 2 fixed on the support frame 6 are clamped in key grooves on the arc of the bearing body 5 to position the bearing body, an auxiliary supporting block 4 is fixed at one side of the bearing body 5 by adopting two flat head screws 1, and limiting blocks 8 are arranged at two sides of the support frame 6 to tightly press the bearing body 5; a limiting bearing seat 11 is fixed on one side of a bearing body 5 through a second bolt 14, a limiting rod 10 penetrates through a hole of the limiting bearing seat 11 and is tensioned by a first bolt 12, the other end of the limiting rod 10 is in interference fit with a rolling bearing 9, a third bolt 13 is in threaded connection with the limiting bearing seat 11 and abuts against the limiting rod 10 to prevent the limiting rod 10 from rotating, a lubricating oil passage 15 is arranged on the bearing body 5, a lubricating oil pipe 3 is arranged at the bottom of a connecting block 7, the lubricating oil pipe 3 is communicated with the lubricating oil passage 15, high-pressure oil mist is sprayed out of the lubricating oil passage 15 through the lubricating oil pipe 3 to lubricate the main journal end face and the excircle contact face of a crankshaft 16; the rolling bearing 9 is positioned at the outer sides of M4 and M2 main journals of the crankshaft 16 and is in contact with the end faces 24 of the M4 and M2 main journals of the crankshaft 16, and the rolling bearing 9 rotates along with the rotation of the crankshaft 16, so that the axial positioning effect is achieved, the friction force is reduced, and the finished end faces 24 of the main journals cannot be damaged by scratching and abrasion.
The cylindrical guide rails 17 are placed in semicircular grooves in a left swing frame beam 22 and a right swing frame beam 23, the four shaft covers 18 are pressed on the two cylindrical guide rails 17, the cylindrical guide rails 17 are fixedly connected with the left swing frame beam 22 and the right swing frame beam 23 through bolts, the cylindrical guide rails 17 are connected with a swing frame seat 21 through four cylindrical variable cross-section spring rods 20, two support columns 19 are arranged between the cylindrical guide rails 17 and the swing frame seat 21, and the lower ends of the two support columns are fixed on the swing frame seat 21; the swing frame seat 21 is arranged on a horizontal support of the front half part of the lathe bed of the automatic single-station crankshaft balance correcting machine.
Claims (2)
1. The utility model provides a device to bent axle plays auxiliary stay and axial positioning which characterized in that: arc grooves and connecting blocks (7) at two ends of a support frame (6) of the device are fixedly connected with a cylindrical guide rail (17) of a crankshaft dynamic balance swing frame vibration system, a bearing body (5) is matched with the support frame (6) in an arc manner, two positioning pins (2) fixed on the support frame (6) are clamped in key grooves on the arc of the bearing body (5) to position the bearing body (5), an auxiliary supporting block (4) is fixed on one side of the bearing body (5) and fixed by two flat head screws (1), and limiting blocks (8) are arranged on two sides of the support frame (6) to tightly press the bearing body (5); the limiting bearing seat (11) is fixed on one side of the bearing body (5) through a second bolt (14), a limiting rod (10) penetrates through a hole of the limiting bearing seat (11) and is tensioned by a first bolt (12), the other end of the limiting rod (10) is in interference fit with the rolling bearing (9), a third bolt (13) is in threaded connection with the limiting bearing seat (11) and abuts against the limiting rod (10) to prevent the limiting rod (10) from rotating, a lubricating oil channel (15) is arranged on the bearing body (5), a lubricating oil pipe (3) is arranged at the bottom of the connecting block (7), the lubricating oil pipe (3) is communicated with the lubricating oil channel (15), high-pressure oil mist is sprayed out of the lubricating oil channel (15) through the lubricating oil pipe (3) to lubricate the end face and the excircle contact face of the main shaft (16); the rolling bearing (9) is positioned at the outer side of M4 and M2 main journals of the crankshaft (16) and is in contact with the main journal end faces (24) of M4 and M2 of the crankshaft (16), and the rolling bearing (9) rotates along with the rotation of the crankshaft (16).
2. The apparatus for assisting in supporting and axially positioning a crankshaft of claim 1, wherein: the cylindrical guide rails (17) are placed in semicircular grooves in a left swing frame beam (22) and a right swing frame beam (23), four shaft covers (18) are pressed on the two cylindrical guide rails (17), the cylindrical guide rails (17) are fixedly connected with the left swing frame beam (22) and the right swing frame beam (23) through bolts, the cylindrical guide rails (17) are connected with a swing frame seat (21) through four cylindrical spring rods (20) with variable cross sections, two pillars (19) are arranged between the cylindrical guide rails (17) and the swing frame seat (21), and the lower ends of the pillars are fixed on the swing frame seat (21); the swing frame seat (21) is arranged on a horizontal support of the front half part of the lathe bed of the automatic single-station crankshaft balance correcting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121394668.0U CN215374338U (en) | 2021-06-23 | 2021-06-23 | Device for assisting in supporting and axially positioning crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121394668.0U CN215374338U (en) | 2021-06-23 | 2021-06-23 | Device for assisting in supporting and axially positioning crankshaft |
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| Publication Number | Publication Date |
|---|---|
| CN215374338U true CN215374338U (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121394668.0U Active CN215374338U (en) | 2021-06-23 | 2021-06-23 | Device for assisting in supporting and axially positioning crankshaft |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486076A (en) * | 2022-04-14 | 2022-05-13 | 西华大学 | Special test mechanism for dynamic balance of engine crankshaft of hydrogen energy hybrid commercial vehicle |
-
2021
- 2021-06-23 CN CN202121394668.0U patent/CN215374338U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486076A (en) * | 2022-04-14 | 2022-05-13 | 西华大学 | Special test mechanism for dynamic balance of engine crankshaft of hydrogen energy hybrid commercial vehicle |
| CN114486076B (en) * | 2022-04-14 | 2022-06-17 | 西华大学 | Special test mechanism for dynamic balance of engine crankshaft of hydrogen energy hybrid commercial vehicle |
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