Clutch driving hub drilling clamp

Abstract

The clutch driving hub drilling clamp comprises a base, a positioning shaft, an annular drilling jig and a rotary positioning mechanism, the positioning shaft horizontally penetrates through a through hole in the base and is rotationally connected with the base through a bearing, and the drilling jig is arranged outside a driving hub in a sleeving mode. Through holes corresponding to oil holes in the driving hub in position are formed in the drilling jig, a drilling sleeve is installed in each through hole, the drilling jig and the driving hub are coaxial with the positioning shaft and fixed to one end of the positioning shaft, and the rotary positioning mechanism is arranged between the other end of the positioning shaft and the base and used for rotating and positioning the positioning shaft at different angles. The driving hub and the drill jig are fixed together through the positioning shaft, the drill jig fixing bolt, the double-end bolt, the opening round pressing plate and the shouldered nut, oil holes in the driving hub are positioned through the multiple drill bushings, the oil hole positioning device has the advantages of being high in positioning precision, high in speed and the like, the oil hole machining efficiency and machining precision can be improved, and the machining cost is reduced.

Description

Technical Field

[0001] The utility model relates to a drilling fixture used for machining oil holes on a driving hub of a steering and braking clutch, belonging to the technical field of metal processing. Background Art

[0002] The driving hub is an important component in the steering and brake clutch. Figure 1 This is a schematic diagram of the structure of a circular driving hub with an outer diameter of 287mm. Oil holes 34 are provided at every angle around the driving hub, providing lubrication. Currently, the positions of oil holes 34 are typically determined by marking them. Due to the large number of oil holes 34, traditional oil hole positioning methods are not only inefficient, labor-intensive, and costly, but also significantly impact positioning accuracy due to human factors, hindering product quality. Therefore, improvements are necessary. Utility Model Content

[0003] The purpose of the utility model is to provide a clutch driving hub drilling fixture to improve the oil hole processing efficiency and processing accuracy and reduce processing costs in view of the shortcomings of the existing technology.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A clutch driving hub drilling fixture includes a base, a positioning shaft, an annular drilling jig and a rotary positioning mechanism. The positioning shaft passes horizontally through a through hole on the base and is rotatably connected to the base through a bearing. The drilling jig is sleeved on the outside of the driving hub. Through holes corresponding to the positions of the oil holes on the driving hub are provided on the drilling jig. A drill sleeve is installed in each through hole. The drilling jig and the driving hub are coaxial with the positioning shaft and are fixed to one end of the positioning shaft. The rotary positioning mechanism is arranged between the other end of the positioning shaft and the base to rotate and position the positioning shaft at different angles.

[0006] The above-mentioned clutch active hub drilling fixture, the rotation positioning mechanism includes a dividing plate, a bent seat and a pin, the dividing plate is coaxially connected to the other end of the positioning shaft, one end of the bent seat is fixedly connected to the base, and the other end is fixed with a support, the pin is perpendicular to the dividing plate and slidably inserted into the pin hole on the support, and a plurality of guide holes corresponding to the pins are provided on the periphery of the dividing plate, and a guide sleeve matching the pin is fixed in each guide hole.

[0007] The clutch active hub drilling fixture has a handle installed at one end of the latch away from the indexing plate, and a spring is provided between the latch and the support, and the elastic force of the spring causes one end of the latch to be inserted into the guide sleeve.

[0008] The clutch driving hub drilling fixture is characterized in that the indexing plate is coaxially mounted on the positioning shaft through its center hole and connected to the positioning shaft through a flat key. The side of the indexing plate facing away from the base is fastened by a round nut arranged at the end of the positioning shaft.

[0009] In the above clutch active hub drilling fixture, a latch stop pin is installed in the radial through hole on the latch pin, and both ends of the latch stop pin rest on the support.

[0010] The above-mentioned clutch active hub drilling fixture, the drill jig is mounted on the outside of one end of the positioning shaft, one end of the drill jig is abutted against the shoulder of the positioning shaft and is fastened to the shoulder of the positioning shaft through multiple drill jig fixing bolts evenly distributed around the axis of the positioning shaft, and a drill jig locating pin matching the locating hole on the drill jig is also provided on the shoulder of the positioning shaft.

[0011] The above-mentioned clutch driving hub drilling fixture, the driving hub is fixedly connected to the positioning shaft by a stud bolt, an open circular pressure plate, a shoulder nut and a locking nut. The open circular pressure plate is abutted against the outer side of the driving hub, and the stud bolt is coaxial with the positioning shaft. One end of the stud bolt passes through the center hole of the open circular pressure plate and the driving hub in turn and is screwed into the threaded hole on the end face of the positioning shaft and locked by the locking nut, and the other end is screwed into the shoulder nut.

[0012] The above clutch driving hub drilling fixture has a positioning screw on the drilling jig. The positioning screw is screwed into the screw hole on the drilling jig and presses against the outer cylindrical surface of the driving hub.

[0013] The above-mentioned clutch active hub drilling fixture, the positioning shaft is rotatably connected to the base through two bearings, an inner spacer is provided between the two bearings, and an annular bearing cover is provided at one end of the base. The bearing cover is loosely sleeved on the outside of the positioning shaft and fixedly connected to the base through multiple bearing cover fixing bolts evenly distributed around the positioning shaft, and one side of the bearing cover is tightly attached to the outer ring of a bearing.

[0014] The above-mentioned clutch active hub drilling fixture has an outer spacer between the bearing cover and the positioning shaft, an outer felt oil seal is provided between the outer spacer and the bearing cover, an inner felt oil seal is provided between the base and the positioning shaft, and two bearings are located between the outer felt oil seal and the inner felt oil seal.

[0015] The utility model fixes the active hub and the drilling jig together by a positioning shaft, a drilling jig fixing bolt, a stud bolt, an open round pressure plate and a shoulder nut, and utilizes multiple drill sleeves to position the oil hole on the active hub, which has the advantages of high positioning accuracy and high speed, can improve the oil hole processing efficiency and processing accuracy, and reduce processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a schematic diagram of the structure of a clutch driving hub;

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 yes Figure 2 Left view of;

[0020] Figure 4 yes Figure 3 BB cross-sectional view in;

[0021] Figure 5 yes Figure 2 Right view;

[0022] Figure 6 yes Figure 5 KK cross-sectional view in;

[0023] Figure 7 It is a structural diagram of the drilling template, where Figure 7 (a) is the main view; Figure 7 (b) is the left view;

[0024] Figure 8 It is a structural diagram of the indexing plate, where Figure 8 (a) is the main view; Figure 8 (b) is the left view.

[0025] The numbers in the figure are as follows: 1. Bearing; 2. Base; 3. Open round pressure plate; 4. Shoulder nut; 5. Bend seat; 6. Guide sleeve; 7. Handle; 8. Spring; 9. Support; 10. Latch; 11. Bend seat locating pin; 12. Drill jig locating pin; 13. Indexing plate; 14. Handle locating pin; 15. Latch limit pin; 16. Positioning screw; 17. Outer felt oil seal (80 felt oil seal); 18. Inner felt oil seal (115 felt oil seal); 19. Positioning shaft; 20. Outer spacer; 21. Bearing cover; 22. Inner spacer; 23. Drill jig; 24. Drill sleeve; 25. Stud bolt; 26. Flat key; 27. Bearing cover fixing bolt; 28. Bend seat fixing bolt; 29. ​​Drill jig fixing bolt; 30. Lock nut; 31. Round nut; 32. Slotted cylindrical head screw; 33. Driving hub; 34. Oil hole. DETAILED DESCRIPTION

[0026] The utility model aims to overcome the drawbacks of the prior art and provides a clutch driving hub drilling fixture to improve the machining quality and machining efficiency of the clutch driving hub oil hole.

[0027] See Figures 2 to 8The utility model mainly includes a base 2, a positioning shaft 19, a drilling jig 23, a stud bolt 25, an open circular pressure plate 3 and a rotary positioning mechanism. The positioning shaft 19 horizontally passes through the through hole on the base 2 and is rotatably connected to the base 2 through two bearings 1. An inner spacer 22 is provided between the two bearings 1. The inner spacer 22 separates the two bearings 1 and maintains a certain distance between them. The drilling jig 23 is annular and is sleeved on the outside of one end of the positioning shaft 19. One end of the drilling jig 23 is abutted against the shoulder of the positioning shaft 19 and is fastened to the shoulder of the positioning shaft 19 through multiple drilling jig fixing bolts 29. Multiple drilling jig fixing bolts 29 are hexagonal cylindrical head bolts, which are evenly distributed around the axis of the positioning shaft 19. Two drilling jig locating pins 12 matching the positioning holes on the drilling jig 23 are also provided on the shoulder of the positioning shaft 19. The driving hub 33 is coaxially mounted within the jig 23. The open circular pressure plate 3 rests against the outside of the driving hub 33. The stud 25 is coaxial with the positioning shaft 19. One end of the stud 25 passes through the center holes of the open circular pressure plate 3 and the driving hub 33, then screws into a threaded hole on the end face of the positioning shaft 19 and is locked by a lock nut 30. The other end screws into the shoulder nut 4. The shoulder nut 4, stud 25, open circular pressure plate 3, and lock nut 30 restrict the axial movement of the driving hub 33. The set screw 16 is screwed into the screw hole in the jig 23 and presses against the outer cylindrical surface of the driving hub 33. The set screw 16 restricts relative rotation between the driving hub 33 and the jig 23, preventing relative movement between the two. The jig 23 is provided with through holes corresponding to the positions of the oil holes 34 on the driving hub 33, and a drill sleeve 24 is installed in each through hole. An annular bearing cap 21 is provided at one end of the base 2. This cap 21 fits loosely over the locating shaft 19 and is secured to the base 2 via a plurality of cap fixing bolts 27 evenly distributed around the locating shaft 19. One side of the cap 21 abuts against the outer ring of one of the bearings 1, limiting axial movement of the bearing 1. The cap fixing bolts 27 are hexagon socket head bolts.

[0028] The rotary positioning mechanism includes a dividing plate 13, an L-shaped bent seat 5, a support 9, a spring 8, a pin 10 and a handle 7. The dividing plate 13 is coaxially mounted on the outside of the other end of the positioning shaft 19 through its center hole and is connected to the positioning shaft 19 through a flat key 26. The outer side of the dividing plate 13 is fastened by a round nut 31. A plurality of guide holes are provided around the dividing plate 13, and a guide sleeve 6 is fixed in each guide hole. One end of the bent seat 5 is fixedly connected to the base 2 by two bent seat fixing bolts 28 and two bent seat locating pins 11, and a support 9 is fixed to the other end. The support 9 is connected to the bent seat 5 by a slotted cylindrical head screw 32. A pin hole corresponding to the guide sleeve 6 is provided on the support 9. The pin 10 is perpendicular to the dividing plate 13 and slidably inserted into the pin hole. One end of the pin 10 matches the guide sleeve 6, and the other end is connected to the handle 7 through the handle locating pin 14. The spring 8 is installed between the pin 10 and the support 9. The elastic force of the spring 8 causes one end of the pin 10 to be inserted into the guide sleeve 6. A pin limit pin 15 is also installed in the radial through hole on the pin 10. The two ends of the pin limit pin 15 rest on the support 9, which is used to limit the depth of the pin 10 inserted into the guide sleeve 6.

[0029] An outer spacer 20 is installed between the bearing cap 21 and the positioning shaft 19. One end of the outer spacer 20 rests on the indexing plate 13, and the other end rests on a bearing 1. An outer felt oil seal 17 is installed between the outer spacer 20 and the bearing cap 21. An inner felt oil seal 18 is installed between the base 2 and the positioning shaft 19, with the two bearings 1 positioned between the outer and inner felt seals 17 and 18. The inner felt seal 18 is mounted on the base 2, and the outer felt seal 17 is mounted on the bearing cap 21. These seals are used to block external iron filings and impurities.

[0030] To use the present utility model: manually pull the handle 7 to separate the latch 10 from the guide sleeve 6 on the indexing plate 13. At this point, the spring 8 is compressed. The indexing plate 13 is then rotated, which drives the driving hub 33 and the jig 23 to rotate synchronously via the positioning shaft 19. When the indexing plate 13 reaches a certain position, the handle 7 is released. Under the elastic force of the spring 8, the latch 10 is inserted into a guide sleeve 6, positioning the driving hub 33. A hole is then drilled in the driving hub 33 using a conventional radial drilling machine by rotating the drill sleeve 24 upward. After drilling is complete, manually pull the handle 7, rotate the indexing plate 13 to a certain angle, and then release the handle 7, allowing the latch 10 to insert into another guide sleeve 6. This allows the oil hole in another location to be drilled. Repeat these steps until all oil holes have been drilled.

[0031] The present invention secures the driving hub 33 to the jig 23 using a positioning shaft 19, jig fixing bolts 29, stud bolts 25, an open circular pressure plate 3, a shoulder nut, and a set screw 16. The oil holes on the driving hub 33 are positioned using multiple drill sleeves 24. The driving hub and jig 23 are rotationally positioned using a graduated plate 13, a curved seat 5, and a latch 10. This design offers advantages such as ingenious design, simple operation, high positioning accuracy, and high speed, effectively resolving the difficulty of drilling multiple groups of oil holes at the root of the driving hub tooth surface. The present invention significantly improves oil hole machining efficiency, saves machining costs, and effectively increases machining accuracy of the driving hub oil holes, facilitating mass production.

Claims

1. A clutch driving hub drilling fixture, characterized in that: The invention comprises a base (2), a positioning shaft (19), an annular drilling jig (23) and a rotation positioning mechanism, wherein the positioning shaft (19) passes horizontally through a through hole on the base (2) and is rotationally connected to the base (2) through a bearing (1), the drilling jig (23) is sleeved on the outside of the driving hub (33), and a through hole corresponding to the position of each oil hole (34) on the driving hub (33) is provided on the drilling jig (23), and a drill sleeve (24) is installed in each through hole, the drilling jig (23) and the driving hub (33) are coaxial with the positioning shaft (19) and fixed to one end of the positioning shaft (19), and the rotation positioning mechanism is provided between the other end of the positioning shaft (19) and the base (2), and rotates and positions the positioning shaft (19) at different angles.

2. A clutch driving hub drilling fixture according to claim 1, characterized in that: The rotary positioning mechanism comprises a dividing plate (13), a curved seat (5) and a latch (10), wherein the dividing plate (13) is coaxially connected to the other end of the positioning shaft (19), one end of the curved seat (5) is fixedly connected to the base (2), and the other end is fixed with a support (9), and the latch (10) is perpendicular to the dividing plate (13) and slidably inserted into the pin hole on the support (9), and a plurality of guide holes corresponding to the latch (10) are provided on the periphery of the dividing plate (13), and a guide sleeve (6) matching the latch (10) is fixed in each guide hole.

3. A clutch driving hub drilling fixture according to claim 2, characterized in that: A handle (7) is installed at one end of the latch (10) away from the indexing plate (13), and a spring (8) is provided between the latch (10) and the support (9). The elastic force of the spring (8) causes one end of the latch (10) to be inserted into the guide sleeve (6).

4. A clutch driving hub drilling fixture according to claim 3, characterized in that: The indexing plate (13) is coaxially mounted on the positioning shaft (19) through its center hole and connected to the positioning shaft (19) through a flat key (26). The side of the indexing plate (13) facing away from the base (2) is fastened by a round nut (31) provided at the end of the positioning shaft (19).

5. A clutch driving hub drilling fixture according to claim 4, characterized in that: A latch stop pin (15) is installed in the radial through hole on the latch pin (10), and both ends of the latch stop pin (15) rest on the support (9).

6. A clutch driving hub drilling fixture according to any one of claims 1 to 5, characterized in that: The drilling jig (23) is sleeved on the outside of one end of the positioning shaft (19), and one end of the drilling jig (23) is abutted against the shaft shoulder of the positioning shaft (19) and is fastened to the shaft shoulder of the positioning shaft (19) by a plurality of drilling jig fixing bolts (29) evenly distributed around the axis of the positioning shaft (19). A drilling jig locating pin (12) matching the locating hole on the drilling jig (23) is also provided on the shaft shoulder of the positioning shaft (19).

7. A clutch driving hub drilling fixture according to claim 6, characterized in that: The driving hub (33) is fixedly connected to the positioning shaft (19) by means of a stud bolt (25), an open circular pressure plate (3), a shoulder nut (4) and a locking nut (30). The open circular pressure plate (3) is abutted against the outer side of the driving hub (33). The stud bolt (25) is coaxial with the positioning shaft (19). One end of the stud bolt (25) passes through the center holes of the open circular pressure plate (3) and the driving hub (33) in sequence and is screwed into the threaded hole on the end face of the positioning shaft (19) and is locked by the locking nut (30). The other end is screwed into the shoulder nut (4).

8. The clutch driving hub drilling fixture according to claim 7, characterized in that: A positioning screw (16) is provided on the drilling jig (23), and the positioning screw (16) is screwed into a screw hole on the drilling jig (23) and pressed against the outer cylindrical surface of the driving hub (33).

9. The clutch driving hub drilling fixture according to claim 8, characterized in that: The positioning shaft (19) is rotatably connected to the base (2) via two bearings (1), an inner spacer (22) is provided between the two bearings (1), and an annular bearing cover (21) is provided at one end of the base (2). The bearing cover (21) is loosely sleeved on the outside of the positioning shaft (19) and fixedly connected to the base (2) via a plurality of bearing cover fixing bolts (27) evenly distributed around the positioning shaft (19), and one side of the bearing cover (21) is in close contact with the outer ring of one bearing (1).

10. The clutch driving hub drilling fixture according to claim 9, characterized in that: An outer spacer (20) is provided between the bearing cover (21) and the positioning shaft (19), an outer felt oil seal (17) is provided between the outer spacer (20) and the bearing cover (21), an inner felt oil seal is provided between the base (2) and the positioning shaft (19), and the two bearings (1) are located between the outer felt oil seal (17) and the inner felt oil seal (18).

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