Trisection inclined oil hole drilling die with angle positioning function

Abstract

The invention relates to the technical field of machining, in particular to a trisection inclined oil hole drilling die with an angle positioning function, and aims to overcome the defects of an original inclined oil hole drilling die when an inclined oil hole is machined in an inner ring of a bearing. A bearing inner ring positioning groove used for containing a bearing inner ring is formed in the middle of the inclined side wall of the base, a threaded hole is formed in the middle of the bearing inner ring positioning groove, the second bolt is in threaded connection with the threaded hole, the upper cover plate is arranged on the second bolt in a sleeving mode, the second bolt is used for pressing the bearing inner ring, and the hole guiding module is arranged at the top of the base and connected with the base through the first bolt. A vertical through hole is formed in the hole guiding module, the through hole is used for being aligned with the side wall of the bearing inner ring so that an inclined oil hole can be machined in the bearing inner ring through a drill bit, and the bearing inclined oil hole machining device is suitable for positioning and guiding of high-precision oil hole machining in a bearing ring, is provided with an angle positioning assembly and can meet the inclined oil hole machining requirement of a bearing.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and particularly relates to a three - equal - part inclined oil hole drilling die with angle positioning. Background Art

[0002] There are three - equal - part inclined oil holes in the chamfer grooves on both sides of a certain type of cylindrical roller bearing, which penetrate the raceway chamfer groove and the end face. At the same time, there are also three - equal - part straight oil holes perpendicular to the end face, which are staggered and evenly distributed in the entire circumferential direction. When machining these inclined oil holes, a special inclined oil hole drill die is required. The hole angle and hole position accuracy are all guaranteed by the drill die. The original structure of the inclined oil hole drill die is a triangular pyramid structure, which looks like an equilateral triangle from the front. After installing and fixing the bearing ring on the die, positioning is achieved through the positioning holes on the die and the already machined straight oil holes. The die is adjusted until the drill bit can smoothly pass through the pilot hole of the drill die. Then, the die is adsorbed on the workbench by a magnetic chuck for drilling. After drilling a hole, the die is removed from the magnetic chuck, flipped to the other base surface, and another hole is drilled, and so on until all three three - equal - part inclined oil holes on one side are machined; then the bearing is removed, flipped, and placed back into the die for re - clamping and positioning, and the above steps are repeated until all three - equal - part inclined oil holes on the other side are machined.

[0003] Defects existing in the original inclined oil hole drill die:

[0004] 1. During machining, the die needs to be flipped six times. After each flip, the die needs to be re - adjusted and positioned, which is time - consuming and laborious; the angle of each hole is guaranteed by the included angle between the workpiece and the positioning surface of the die. The die has three positioning surfaces, and there are machining errors between the three positioning surfaces, which affect the drilling angle and indirectly affect the hole position accuracy.

[0005] 2. The die itself is an integral structure. Because the hardness requirement at the pilot hole cannot be too high, the die cannot be quenched, resulting in a relatively soft overall hardness. The positioning surface of the die is very easy to have protrusions due to bumps, thus generating positioning errors and causing the hole position to exceed the tolerance after machining; moreover, as the number of uses increases, the accuracy of the pilot hole will gradually be lost. When the accuracy of the pilot hole cannot meet the use requirements, the die can only be scrapped as a whole, and the manufacturing cost of the die itself is relatively high, resulting in waste. Summary of the Invention

[0006] The purpose of this invention patent: The present invention aims to solve the defects existing in the original inclined oil hole drill die when machining the inclined oil holes of the bearing inner ring. The present invention provides a three - equal - part inclined oil hole drilling die with angle positioning.

[0007] The purpose of the present invention is achieved as follows: A three - equal - part inclined oil hole drilling die with angle positioning, which includes bolt one, pilot hole module, base, upper cover plate, and bolt two;

[0008] Any side wall of the base is an inclined surface that slopes outward from top to bottom. In the middle of the inclined side wall of the base, there is a bearing inner ring positioning groove for placing the bearing inner ring. A threaded hole is provided in the middle of the bearing inner ring positioning groove, and the second bolt is threadedly connected to the threaded hole. The upper cover plate is sleeved on the second bolt, and the second bolt is used to press the bearing inner ring. The hole-drilling module is arranged on the top of the base, and the hole-drilling module and the base are connected by the first bolt. A vertical through hole is provided on the hole-drilling module, and this through hole is used to align with the side wall of the bearing inner ring for a drill bit to process an inclined oil hole on the bearing inner ring.

[0009] Further, a U-shaped opening that is connected from the middle to its end is provided on the upper cover plate.

[0010] Still further, a U-shaped groove is provided in the upper part of the base, and the hole-drilling module is inserted into the U-shaped groove.

[0011] Further, a waste material groove is provided in the middle of the bearing inner ring positioning groove, and a discharge groove that communicates with the waste material groove is provided below the side wall of the base.

[0012] Still further, a pin hole is provided at the bearing inner ring positioning groove of the base, and a positioning pin is inserted into the pin hole. The positioning pin is used to pass through the trisecting holes on the bearing inner ring for positioning the bearing inner ring.

[0013] Further, the pin hole is located in the middle of the top end of the discharge groove.

[0014] Still further, the base is made of a material that can be adsorbed by a magnetic chuck.

[0015] Further, the first bolt is an M5 hexagon bolt.

[0016] Still further, the second bolt is an M12 hexagon bolt.

[0017] Further, a short plate is extended and provided on the side of the hole-drilling module, and the through hole is provided on the short plate.

[0018] Beneficial effects:

[0019] This solution is applicable to the positioning and guiding of high-precision oil hole processing in bearing rings. It has an angle positioning component and can simultaneously achieve trisecting positioning. Through modular structure design, rapid positioning and clamping of workpieces can be realized, and it can meet the processing requirements of inclined oil holes in bearings.

[0020] It solves the problem that when drilling inclined oil holes with the original oil hole drill jig, due to the relatively soft material of the original drill jig, the machining positioning base surface is worn, resulting in the out-of-tolerance of the hole position and the scrapping of the product. At the same time, modular design is adopted, and the pilot hole part is made into an independent and replaceable component. When the accuracy of the pilot hole cannot meet the use requirements, only the new pilot hole component needs to be replaced, without replacing the whole die. At the same time, there is a positioning hole on the die, and through this positioning hole and the trisecting hole of the workpiece itself, the trisection positioning of the inclined oil hole is realized. The die only needs one positioning to process all six inclined oil holes, improving the machining efficiency and quality.

[0021] The service life of the original drilling die was about half a year. The service life of the improved drilling die base is almost infinite. Only the guide block needs to be replaced according to the wear degree of the guide block, and the use cost is greatly reduced. After quenching treatment, the hardness of the die base is increased, and the positioning surface is not easy to wear. Only one positioning is required during the machining process, greatly reducing the repeated positioning error, and significantly improving the product qualification rate and machining efficiency. According to statistics, the machining time of a single-piece bearing inclined oil hole is reduced from an average of 28 minutes to an average of 16 minutes, and the efficiency is increased by 43%. The product qualification rate is increased from 73% to 95%. Brief Description of the Drawings

[0022] Figure 1 is an exploded view of a three-way inclined oil hole drilling die with angle positioning according to the present invention;

[0023] Figure 2 is a schematic view of the inner ring of the bearing to be machined according to the present invention;

[0024] Figure 3 is a schematic view of the base of the present invention;

[0025] Figure 4 is a schematic view of the pilot hole module of the present invention;

[0026] Figure 5 is an assembly view of a three-way inclined oil hole drilling die with angle positioning according to the present invention. Detailed Description of the Invention

[0027] Detailed Description 1: A three-way inclined oil hole drilling die with angle positioning, which includes bolt 1-1, pilot hole module 1-2, base 1-3, upper cover plate 1-6 and bolt 1-7;

[0028] Any side wall of the base 1-3 is an inclined plane that slopes outward from top to bottom. In the middle of the inclined side wall of the base 1-3, there is a bearing inner ring positioning groove for placing the bearing inner ring 1-4. A threaded hole is provided in the middle of the bearing inner ring positioning groove. The second bolt 1-7 is threadedly connected to the threaded hole. The upper cover plate 1-6 is sleeved on the second bolt 1-7. The second bolt 1-7 is used to press the bearing inner ring 1-4. The hole guiding module 1-2 is arranged on the top of the base 1-3. The hole guiding module 1-2 and the base 1-3 are connected by the first bolt 1-1. A vertical through hole 4-1 is provided on the hole guiding module 1-2. This through hole 4-1 is used to align with the side wall of the bearing inner ring 1-4 for a drill bit to process an inclined oil hole on the bearing inner ring 1-4.

[0029] Other specific implementation manners are the same as those in the first specific implementation manner.

[0030] Second specific implementation manner: A three-equal-part inclined oil hole drilling die with angle positioning. The upper cover plate 1-6 is provided with a U-shaped opening that is connected from the middle to its end.

[0031] Other specific implementation manners are the same as those in the first specific implementation manner.

[0032] Third specific implementation manner: A three-equal-part inclined oil hole drilling die with angle positioning. The upper part of the base 1-3 is provided with a U-shaped groove. The hole guiding module 1-2 is inserted into the U-shaped groove.

[0033] Other specific implementation manners are the same as those in the first specific implementation manner.

[0034] Fourth specific implementation manner: A three-equal-part inclined oil hole drilling die with angle positioning. A waste material groove is provided in the middle of the bearing inner ring positioning groove of the base 1-3. A discharge groove communicating with the waste material groove is provided below the side wall of the base 1-3.

[0035] In this implementation manner: The waste material groove receives the metal chips generated by drilling the bearing inner ring with a drill bit, and the metal chips are finally discharged through the discharge groove.

[0036] Other specific implementation manners are the same as those in the first specific implementation manner.

[0037] Fifth specific implementation manner: A three-equal-part inclined oil hole drilling die with angle positioning. A pin hole 3-1 is provided at the bearing inner ring positioning groove of the base 1-3. A positioning pin 1-5 is inserted into the pin hole 3-1. The positioning pin 1-5 is used to pass through the three-equal-part hole 2-1 on the bearing inner ring 1-4 for positioning the bearing inner ring 1-4.

[0038] In this implementation manner: The positioning pin is used to pass through the three-equal-part hole on the bearing inner ring for positioning the bearing inner ring, so as to process an inclined oil hole on the bearing inner ring.

[0039] Other specific implementation manners are the same as those in the first specific implementation manner.

[0040] Specific Embodiment Six: A drilling die for a three - equal - part inclined oil hole with angle positioning. The pin hole 3 - 1 is located in the middle of the top of the unloading groove.

[0041] Other specific embodiments are the same as Specific Embodiment One.

[0042] Specific Embodiment Seven: A drilling die for a three - equal - part inclined oil hole with angle positioning. The base 1 - 3 is made of a material that can be adsorbed by a magnetic chuck.

[0043] In this embodiment: The base is made of a material that can be adsorbed by a magnetic chuck so as to be connected to the magnetic chuck of the work station.

[0044] Other specific embodiments are the same as Specific Embodiment One.

[0045] Specific Embodiment Eight: A drilling die for a three - equal - part inclined oil hole with angle positioning. The first bolt 1 - 1 is an M5 hexagon bolt.

[0046] Other specific embodiments are the same as Specific Embodiment One.

[0047] Specific Embodiment Nine: A drilling die for a three - equal - part inclined oil hole with angle positioning. The second bolt 1 - 7 is an M12 hexagon bolt.

[0048] Other specific embodiments are the same as Specific Embodiment One.

[0049] Specific Embodiment Ten: A drilling die for a three - equal - part inclined oil hole with angle positioning. A short plate is extended and provided on the side of the pilot hole module 1 - 2, and the through - hole 4 - 1 is provided on the short plate.

[0050] In this embodiment: The through - hole provided on the short plate can meet the requirement of adjusting the position of the drill bit.

[0051] Other specific embodiments are the same as Specific Embodiment One.

[0052] Working Process:

[0053] 1. Place the bearing inner ring ( Figures 1-4 ) on the base ( Figures 1-3 ), pass the positioning pin ( Figures 1-5 ) through the three - equal - part holes on the end face of the bearing inner ring ( Figure 2-1 ) and insert it into the positioning hole ( Figure 3-1 ), cover the cover plate ( Figure 1 - 6), and fasten the cover plate by tightening the M12 hexagon bolt ( Figure 1 - 7), so as to fasten the bearing inner ring ( Figures 1-4 ).

[0054] 2. Install the pilot hole module ( Figures 1-2 ) on the base ( Figures 1-3) and locked by M5 hexagon bolts ( Figure 1-1 ).

[0055] 3. Place the mold ( Figure 5 ) on the magnetic chuck of the work station, ensure that there are no impurities such as iron filings between the bottom surface of the base and the middle of the magnetic chuck, slowly lower the drill bit, and at the same time finely adjust the position of the mold ( Figure 5 ) until the drill bit can smoothly pass through the guide hole ( Figure 4-1 ). After the mold position is adjusted, completely fix the mold by the magnetic chuck, slowly feed the drill bit to drill a hole. After drilling a hole, loosen the cover plate ( Figure 1 -6), pull out the positioning pin ( Figures 1-5 ), rotate the workpiece 60° and then reinsert the positioning pin ( Figures 1-5 ), tighten the cover plate ( Figure 1 -6) again, machine the second hole, repeat the above steps until the third hole is machined, remove the bearing and turn it over to the other side, and repeat the previous steps to finish machining the three equal oil holes on the other side.

Claims

1. A trisection oil hole drilling die with angle positioning, characterized in that: It comprises bolt one (1-1), a lead hole module (1-2), a base (1-3), an upper cover plate (1-6) and bolt two (1-7); Any side wall of the base (1-3) is an inclined surface inclined outward from top to bottom, a bearing inner ring positioning groove for placing the bearing inner ring (1-4) is provided in the middle of the inclined side wall of the base (1-3), a threaded hole is provided in the middle of the bearing inner ring positioning groove, a bolt 2 (1-7) is threadedly connected to the threaded hole, an upper cover plate (1-6) is sleeved on the bolt 2 (1-7), the bolt 2 (1-7) is used to press the bearing inner ring (1-4), a hole guide module (1-2) is arranged on the top of the base (1-3), the hole guide module (1-2) and the base (1-3) are connected by a bolt 1 (1-1), a vertical through hole (4-1) is provided on the hole guide module (1-2), the through hole (4-1) is used to align with the side wall of the bearing inner ring (1-4) so ​​as to allow a drill to machine an inclined oil hole on the bearing inner ring (1-4).

2. The three-divided oblique oil hole drilling die with angle positioning according to claim 1 is characterized by: The upper cover plate (1-6) is provided with a U-shaped opening connecting the middle portion to the end portion thereof.

3. The three-divided oblique oil hole drilling die with angle positioning according to claim 1 is characterized by: A U-shaped groove is provided on the upper part of the base (1-3), and the lead hole module (1-2) is inserted into the U-shaped groove.

4. The trisection-divided oblique oil hole drilling die with angle positioning according to claim 1 is characterized in that: A waste groove is provided in the middle of the bearing inner ring positioning groove, and a discharge groove communicating with the waste groove is provided below the side wall of the base (1-3).

5. The trisection-divided oblique oil hole drilling die with angle positioning according to claim 4 is characterized in that: A pin hole (3-1) is provided at the bearing inner ring positioning groove of the base (1-3), a positioning pin (1-5) is inserted into the pin hole (3-1), and the positioning pin (1-5) is used to pass through the three-divided hole (2-1) on the bearing inner ring (1-4) to position the bearing inner ring (1-4).

6. The trisection-divided oblique oil hole drilling die with angle positioning according to claim 5 is characterized by: The pin hole (3-1) is located at the middle of the top end of the discharge chute.

7. The trisection-divided oblique oil hole drilling die with angle positioning according to claim 1 is characterized by: The base (1-3) is made of a material that can be adsorbed by a magnetic suction cup.

8. The trisection-divided oblique oil hole drilling die with angle positioning according to claim 1 is characterized by: Bolt 1 (1-1) is an M5 hexagonal bolt.

9. The trisection-divided oblique oil hole drilling die with angle positioning according to claim 1, characterized in that: Bolt 2 (1-7) is an M12 hexagonal bolt.

10. The trisection-divided oblique oil hole drilling die with angle positioning according to claim 1, characterized in that: A short plate is provided on the side of the lead hole module (1-2), and the through hole (4-1) is arranged on the short plate.

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