CN219274659U - Broaching device with adjustable broaching angle of crank internal spline - Google Patents
Broaching device with adjustable broaching angle of crank internal spline Download PDFInfo
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- CN219274659U CN219274659U CN202121909797.9U CN202121909797U CN219274659U CN 219274659 U CN219274659 U CN 219274659U CN 202121909797 U CN202121909797 U CN 202121909797U CN 219274659 U CN219274659 U CN 219274659U
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- broaching
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- workbench
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- spline
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The application relates to a broaching device with an adjustable broaching angle of an internal spline of a crank, which comprises a base, a supporting piece, a workbench, a broaching part and a fixing component, wherein a spline hole is reserved in the crank, so that the crank is in tight connection with the workbench, the tail part of the crank is fixed through the fixing component, and a broaching tool sequentially penetrates through the spline hole, the workbench and the broaching part and is connected with the broaching part; the workbench comprises an adjusting block, a first bolt and a second bolt, the broaching part comprises a broach, the first bolt is loosened, the second bolt is adjusted, and the angle between the workbench and the supporting piece is adjusted until the center axis of the spline hole is aligned with the center axis of the broach, so that the centering precision of the internal spline is ensured; and broaching the spline hole through the broaching part to finish the production of the internal spline of the crank.
Description
Technical Field
The application relates to the field of part machining, in particular to a broaching device with an adjustable broaching angle of an internal spline of a crank.
Background
The spline structure comprises an external spline and an internal spline, the internal spline is usually used for axially fixing and transmitting torque, the internal spline is arranged on the surface of an inner cylinder of a workpiece, the external spline is arranged on the surface of an outer cylinder of the workpiece, the internal spline and the external spline are provided with accurate and dense gears, and in the use process, the internal spline gears and the external spline gears are meshed with each other to transmit; in a bicycle, two cranks are connected with a transmission shaft through a spline in a key way, so that the two cranks drive pedals on two sides to synchronously link.
The internal spline is processed through a broaching device, the tail part of the crank is fixed on the broaching device, and a broaching tool is used for broaching a reserved spline hole on the crank; in order to ensure the centering precision of the final internal spline, the central shaft of the spline hole and the central shaft of the broach are required to be positioned on the same straight line, however, because the end face of the crank is uneven, the end face of the workpiece is not perpendicular to the central shaft of the spline hole, so that the central shaft of the broach is difficult to align with the central shaft of the spline hole, and the centering precision of the internal spline during broaching cannot be ensured.
The applicant believes that improvements should be made in response to the problem of the splined bore central axis being difficult to align with the broach central axis.
Disclosure of Invention
In order to solve the problem that the central shaft of the existing spline hole is difficult to align with the central shaft of the broach, the application provides a broaching device with an adjustable broaching angle of an internal spline of a crank.
The application provides a broaching device with adjustable crank internal spline broaching angle, adopts following technical scheme.
A broaching apparatus with an adjustable angle of broaching of an internal spline of a crank, comprising:
the base is used for supporting;
the supporting piece is arranged above the base, and the surface of the supporting piece, which is close to one side of the crank, is arranged as a reference surface;
the workbench is connected with the reference surface on one side and is in abutting connection with the crank on the other side, an included angle or tight connection is formed between the workbench and the reference surface, and the workbench is used for adjusting the position relationship between the reference surface and the spline hole;
the broaching part is arranged above the base and comprises a broaching tool, and one end of the broaching tool sequentially penetrates through the spline hole, the workbench and the supporting piece.
Through adopting above-mentioned technical scheme, through the setting of workstation, the crank is connected to the workstation and support piece, and the crank will carry out the internal spline broaching operation on the workstation, because the crank surface is not a smooth face, and the spline hole center pin is not perpendicular with support piece place plane in the crank, and the relation of connection between workstation and the support piece can be adjusted, so the spline hole center pin sets up with support piece place plane is perpendicular in the crank, and the spline hole center pin is located same horizontal line with the broach center pin, guarantees the centering accuracy of internal spline.
Optionally, the workbench comprises:
one side of the adjusting block is arranged opposite to the reference surface, and the other side of the adjusting block is connected with the crank;
the first bolts are provided with a plurality of pieces, each first bolt is circumferentially distributed around the axis of the adjusting block, and each first bolt penetrates through the adjusting block and is in threaded connection with the supporting piece;
the second bolts are provided with a plurality of pieces, each second bolt is circumferentially distributed around the axis of the adjusting block, each second bolt penetrates through the adjusting block and is in abutting connection with the supporting piece, and each second bolt is matched with each first bolt.
By adopting the technical scheme, one end of the crank with the splined hole is abutted against the adjusting block through the arrangement of the adjusting block to position; through the arrangement of the first bolts, the adjusting block is fixed on the supporting piece through the coordination effect of a plurality of first bolts; through the setting of second bolt, adjust the contained angle relation between the plane that support piece place and the plane that the workstation place, and then adjust the angle of crank splined hole to and the broach carries out the angle of broaching to the splined hole.
Optionally, the workbench is provided with:
the first through hole is arranged at the center of the workbench and penetrates through the workbench.
Through adopting above-mentioned technical scheme, through the setting of first through-hole, at the broaching in-process, the broach can wear to establish first through-hole and carry out the broaching to the splined hole on the crank, and first through-hole can be regarded as a reference simultaneously for judge whether the splined hole is located same horizontal line with first through-hole axis.
Optionally, the support member is provided with:
the second through hole penetrates through the supporting piece to be arranged, and the second through hole is communicated with the first through hole.
Through adopting above-mentioned technical scheme, through the setting of second through-hole, let the broach can pass in proper order and establish splined hole, first through-hole and second through-hole, the second through-hole is spacing to the swing of broach, when the broach takes place unexpected fracture or when droing, the displacement of second through-hole restriction broach avoids causing danger to operating personnel.
Optionally, the support member is further provided with:
and the fixing assembly is connected with one side, close to the workbench, of the supporting piece.
Through adopting above-mentioned technical scheme, can fix the crank afterbody through the setting of fixed subassembly, avoid the crank to take place to remove in the internal spline broaching process, influence the precision of internal spline.
Optionally, the fixing assembly includes:
the connecting block is used for supporting other parts in the fixing assembly;
the third bolt penetrates through the fixing assembly and is in threaded connection with the supporting piece;
the lower end part of the first limiting piece is in threaded connection with the connecting block;
the lower end of the second limiting piece is in threaded connection with the connecting block, and the height of the first limiting piece is greater than that of the second limiting piece.
Through adopting the technical scheme, the fixing assembly is connected with the supporting piece through the arrangement of the connecting block, the connection mode of the connecting block and the supporting piece is adjusted through the third bolt, and the angle of the whole fixing assembly is changed so as to cope with the installation and the fixation of workpieces of different models; the crank tail is fixed through the arrangement of the first limiting piece and the second limiting piece.
Optionally, the broaching portion further includes:
the three-jaw chuck is arranged on one side of the broaching part close to the workbench;
the main shaft is connected with the three-jaw chuck through bolts;
the driving assembly is connected with one end of the main shaft far away from the workbench;
wherein, the broach is kept away from the one end card of workstation and is established in three-jaw chuck.
By adopting the technical scheme, the broach is fixed through the arrangement of the three-jaw chuck; through the setting of main shaft, under the drive of drive assembly, the main shaft drives the broach and moves towards drive assembly from the workstation, carries out the broaching to the spline hole.
Optionally, the broaching portion further includes:
the guide rods are arranged on two sides of the main shaft respectively;
the guide block is arranged at one end of the main shaft, which is close to the workbench, and is fixedly connected with the main shaft, and is in sliding connection with the two guide rods.
Through adopting above-mentioned technical scheme, through the setting of guide bar and guide block, transversely restrict the removal of main shaft, avoid the main shaft to appear orientation deviation and tremble in the removal in-process, guarantee broach motion's stability, also ensured the precision of internal spline.
In summary, the present application includes at least one of the following beneficial technical effects:
the position of the spline hole in the crank is adjusted by adjusting the included angle between the workbench and the reference surface, so that the spline hole central shaft, the first through hole central shaft, the second through hole central shaft and the broach central shaft are positioned on the same straight line, the spline hole is not deviated in the internal spline broaching process, and the accuracy of the internal spline is ensured;
the included angle between the workbench and the reference surface is adjusted through the abutting action of the first bolt connection and the second bolt;
the tail part of the crank is fixed, so that the crank is prevented from shaking in the broaching process;
the main shaft is guided, so that the broaching tool is ensured to work along a straight line, and the centering precision of the internal spline is ensured.
Drawings
FIG. 1 is a schematic illustration of a broaching angle adjustable internal spline broaching apparatus;
FIG. 2 is a schematic view of a table configuration;
FIG. 3 is a schematic cross-sectional view of a table;
FIG. 4 is a schematic drawing of the broaching angle adjustment of FIG. 3;
fig. 5 is a schematic view of the broaching portion structure.
Reference numerals: 1. a base; 2. a support; 3. a work table; 4. a broaching portion; 5. a fixing assembly; 21. a reference surface; 22. a second through hole; 31. an adjusting block; 32. a first bolt; 33. a second bolt; 34. a first through hole; 41. a three-jaw chuck; 42. a main shaft; 43. a drive assembly; 44. a guide rod; 45. a guide block; 46. broaching tool; 51. a connecting block; 52. a third bolt; 53. a first limiting member; 54. and the second limiting piece.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-5.
The embodiment of the application discloses an internal spline broaching device with an adjustable broaching angle.
Referring to fig. 1 and 2, an internal spline broaching device with an adjustable broaching angle includes a base 1, a support member 2, a table 3, and a broaching portion 4, wherein the base 1 serves to support other components of the broaching device, the support member 2 is disposed above the base 1, and a face of the support member 2 near a crank side is set as a reference face 21; the workbench 3 is arranged on one side of the support 2, which is close to the crank, one side of the workbench 3 is connected with the reference surface 21, the reference surface 21 forms an included angle with the workbench 3, the other side is in abutting connection with the crank, the crank carries out internal spline broaching operation on the workbench 3, the broaching part 4 is arranged above the base 1, the broaching part 4 comprises a broach 46, the broach 46 is used for broaching a reserved spline hole in the crank, and the broach 46 sequentially passes through the spline hole, the workbench 3 and the support 2 in the broaching process; because the surface of the crank is not a smooth surface, the central axis of the spline hole in the crank is not vertical to the plane of the supporting piece 2, the plane of the reference surface 21 is taken as a standard, the included angle between the workbench 3 and the reference surface 21 is adjusted, and the angle relation between the reference surface 21 and the crank is further adjusted, so that the central axis of the spline hole in the crank is vertical to the plane of the supporting piece 2, the central axis of the spline hole and the central axis of the broach 46 are positioned on the same horizontal line, and the centering precision of the internal spline is ensured.
Referring to fig. 3 and 4, the workbench 3 comprises an adjusting block 31, a plurality of first bolts 32 and a plurality of second bolts 33, one side of the adjusting block 31 is opposite to the reference surface 21, one side of the adjusting block is in tight connection with a crank, the plurality of first bolts 32 are circumferentially distributed around the axis of the adjusting block 31, the first bolts 32 penetrate through the adjusting block 31 and are in threaded connection with the supporting piece 2, the adjusting piece is fixed on one side, close to the crank, of the supporting piece 2, and stability of the adjusting piece and the crank in the broaching process is guaranteed; the second bolt 33 passes through the adjusting piece and is in tight connection with the reference surface 21 in the supporting piece 2, and the size of the included angle between the reference surface 21 and the surface of the workbench 3 can be adjusted by adjusting the second bolt 33, so that the broaching angle of the broaching tool 46 for broaching the spline hole is adjusted.
Referring to fig. 2 and 3, the workbench 3 is further provided with a first through hole 34, the support 2 is provided with a second through hole 22, the first through hole 34 penetrates through the center of the workbench 3, the second through hole 22 penetrates through the support 2, the first through hole 34 is communicated with the second through hole 22, in the broaching process, the broach 46 penetrates through the spline hole, the first through hole 34 and the second through hole 22 in sequence, the first through hole 34 and the second through hole 22 limit the left-right swing of the broach 46, and when the broach 46 breaks or falls off accidentally, the danger to an operator caused by the broach 46 is limited.
Referring to fig. 1 and 2, a fixing component 5 is further arranged on the support member 2, the fixing component 5 is connected with the support member 2 and is used for fixing the tail part of the handle, and the fixing component 5 comprises a connecting block 51, a third bolt 52, a first limiting piece 53 and a second limiting piece 54; the connecting block 51 is fixed on the support 2 through a third bolt 52, and the angle of the connecting block 51 can be adjusted after the third bolt 52 is loosened; the lower end of the first limiting part 53 and the lower end of the second limiting part 54 are in threaded connection with the connecting part, the heights of the first limiting part 53 and the second limiting part 54 can be adjusted through the threaded connection, the tail end of the crank is clamped between the first limiting part 53 and the second limiting part 54, and the adjustable crank and other workpieces of different types can be fixed through the adjustable arrangement, so that the crank is prevented from moving in the broaching process of the internal spline, and the precision of the internal spline is prevented from being influenced.
Referring to fig. 5, the broaching part 4 in the internal spline broaching device with adjustable broaching angle further comprises a three-jaw chuck 41, a main shaft 42 and a driving assembly 43, wherein one side of the three-jaw chuck 41 away from the workbench 3 is fixed on the main shaft 42 through bolts, and the side close to the workbench 3 is connected with a broach 46 to fix the broach 46; one end of the main shaft 42 is connected with the three-jaw chuck 41, the other end is connected with the driving component 43, wherein the central axis of the main shaft 42 and the central axis of the broach 46 are positioned on the same straight line, the driving component 43 drives the main shaft 42 to move, and drives the broach 46 to move from the side close to the workbench 3 to the side close to the driving component 43, and broaching is performed on the splined hole to form an internal spline.
Referring to fig. 5, the broaching portion 4 further includes two guide rods 44 and guide blocks 45, wherein the two guide rods 44 are distributed on two sides of the spindle 42, the guide blocks 45 are disposed at one end of the spindle 42 close to the workbench 3 and fixedly connected with the spindle 42, the guide blocks 45 are slidably connected with the two guide rods 44, when the spindle 42 moves, the guide blocks 45 are driven to move synchronously, and two sides of the guide blocks 45 are slidably connected with the guide rods 44, so that the moving direction of the guide blocks 45 is limited and cannot deviate to two sides, further, the situation that the spindle 42 deviates in direction and vibrates in the moving process is avoided, and the broaching tool 46 is ensured to broach a splined hole stably, so that the tool trembling is avoided.
The implementation principle of the internal spline broaching device with the adjustable broaching angle is as follows: a spline hole is reserved in the crank, so that the crank is in abutting connection with the workbench 3, the tail of the crank is fixed through the fixing component 5, and the broach 46 sequentially penetrates through the spline hole, the first through hole 34 and the second through hole 22 and is fixed through the three-jaw chuck 41; then, the first bolt 32 is loosened, the second bolt 33 is adjusted, the angle between the workbench 3 and the reference surface 21 is adjusted until the center axis of the spline hole is aligned with the center axis of the broach 46, the first bolt 32 is screwed down, and the workbench 3 is fixed; the centering precision of the internal spline is ensured by adjusting the broaching angle of the broaching tool 46 to the spline hole; and opening the driving assembly 43, driving the main shaft 42 to move, and driving the broaching tool 46 to carry out broaching operation in the splined hole to finish broaching of the internal spline of the crank.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. A broaching apparatus with an adjustable angle of broaching of an internal spline of a crank, comprising:
a base (1), the base (1) serving as a support;
the support piece (2) is arranged above the base (1), and the surface, close to one side of the crank, of the support piece (2) is arranged as a reference surface (21);
the workbench (3), one side of the workbench (3) is connected with the reference surface (21), the other side is in tight connection with the crank, an included angle or tight connection is formed between the workbench (3) and the reference surface (21), and the workbench (3) is used for adjusting the position relation between the reference surface (21) and the spline hole;
broaching portion (4), broaching portion (4) set up in base (1) top, broaching portion (4) include broaching tool (46), spline hole, workstation (3) and support piece (2) are worn to establish in proper order to broaching tool (46) one end.
2. Broaching apparatus with adjustable broaching angle of internal crank spline according to claim 1, wherein the table (3) comprises:
the adjusting block (31) is arranged on one side of the adjusting block (31) opposite to the reference surface (21), and one side of the adjusting block is connected with the crank;
the first bolts (32), wherein the first bolts (32) are provided with a plurality of pieces, each first bolt (32) is circumferentially distributed around the axis of the adjusting block (31), and each first bolt (32) passes through the adjusting block (31) and is in threaded connection with the supporting piece (2);
the second bolts (33), the second bolts (33) are provided with a plurality of pieces, each second bolt (33) is circumferentially distributed around the axis of the adjusting block (31), each second bolt (33) penetrates through the adjusting block (31) and is in abutting connection with the supporting piece (2), and each second bolt (33) is matched with each first bolt (32).
3. Broaching apparatus with adjustable broaching angle of internal spline of crank according to claim 1, characterized in that the bench (3) is provided with:
the first through hole (34) is arranged at the center of the workbench (3), and the first through hole (34) penetrates through the workbench (3).
4. Broaching apparatus with adjustable broaching angle of internal crank spline according to claim 1, characterized in that the support (2) is provided with:
and a second through hole (22), wherein the second through hole (22) is arranged through the support (2), and the second through hole (22) is communicated with the first through hole (34).
5. Broaching apparatus with adjustable broaching angle of internal crank spline according to claim 1, characterized in that the support (2) is further provided with:
and the fixing component (5) is connected with one side, close to the workbench (3), of the supporting piece (2) by the fixing component (5).
6. Broaching apparatus with adjustable broaching angle of internal crank spline according to claim 1, wherein the fixed assembly (5) comprises:
a connection block (51), the connection block (51) being used for supporting other parts in the fixing assembly (5);
a third bolt (52), the third bolt (52) penetrating through the fixing assembly (5) and being in threaded connection with the support (2);
the lower end part of the first limiting piece (53) is in threaded connection with the connecting block (51);
the lower end part of the second limiting piece (54) is in threaded connection with the connecting block (51), and the height of the first limiting piece (53) is larger than that of the second limiting piece (54).
7. The broaching apparatus of adjustable crank internal spline broaching angle according to claim 1, wherein the broaching portion (4) further comprises:
a three-jaw chuck (41), wherein the three-jaw chuck (41) is arranged on one side of the broaching part (4) close to the workbench (3);
a main shaft (42), wherein the main shaft (42) is connected with the three-jaw chuck (41) through bolts;
the driving assembly (43) is connected with one end, far away from the workbench (3), of the main shaft (42);
wherein, one end of the broach (46) far away from the workbench (3) is clamped in the three-jaw chuck (41).
8. The broaching apparatus of adjustable crank internal spline broaching angle according to claim 1, wherein the broaching portion (4) further comprises:
the guide rods (44) are arranged, the guide rods (44) are arranged in two pieces, and the two guide rods (44) are respectively arranged at two sides of the main shaft (42);
the guide block (45), guide block (45) sets up in main shaft (42) be close to workstation (3) one end, guide block (45) are through fixed connection with main shaft (42), guide block (45) and two guide bars (44) sliding connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121909797.9U CN219274659U (en) | 2021-08-14 | 2021-08-14 | Broaching device with adjustable broaching angle of crank internal spline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121909797.9U CN219274659U (en) | 2021-08-14 | 2021-08-14 | Broaching device with adjustable broaching angle of crank internal spline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219274659U true CN219274659U (en) | 2023-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121909797.9U Active CN219274659U (en) | 2021-08-14 | 2021-08-14 | Broaching device with adjustable broaching angle of crank internal spline |
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| CN (1) | CN219274659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117505976A (en) * | 2023-12-11 | 2024-02-06 | 江苏海宇机械有限公司 | Automatic broaching angle adjusting system for internal spline of crank |
-
2021
- 2021-08-14 CN CN202121909797.9U patent/CN219274659U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117505976A (en) * | 2023-12-11 | 2024-02-06 | 江苏海宇机械有限公司 | Automatic broaching angle adjusting system for internal spline of crank |
| CN117505976B (en) * | 2023-12-11 | 2024-04-16 | 江苏海宇机械有限公司 | Automatic broaching angle adjusting system for internal spline of crank |
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