A device for one-time processing of inner hole multi-oil groove

Abstract

An inner hole multi-oil groove one-time processing device includes an upper die unit and a lower die unit. The upper die unit includes an upper die plate and an upper pressing sleeve. The lower die unit includes a lower die plate, a die seat unit, a core rod, a spring, and a cutting tool. The die seat unit includes a core rod fixing seat and a sliding die assembly. The sliding die assembly includes a sliding die frame, a gasket, a fixed die, and a sliding die. The core rod includes a core rod main body and a helical groove. The cutting tool includes a tool sleeve, a tool head array, and a guide pin. The guide pin is inserted into the helical groove. When the upper die unit and the lower die unit process a workpiece, the center axes of the upper pressing sleeve, the core rod, and the cutting tool coincide. The inner hole multi-oil groove one-time processing device saves a large amount of processing time, is suitable for different specifications of products by replacing corresponding tools, and greatly improves production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of sliding bearing processing technology, and in particular, it is a one-time processing device for multiple oil grooves in the inner hole. Background Technology

[0002] The term "multiple oil grooves in the inner bore" is commonly used to describe a feature in the design of mechanical parts or molds, especially in applications requiring lubrication during manufacturing. The inner bore refers to the hole inside the part, while multiple oil grooves mean that there are several grooves on the inner wall of this bore for storing lubricating oil. This design ensures that the lubricating oil is evenly distributed throughout the part, thereby reducing wear, lowering friction, and extending the part's service life.

[0003] Currently, the inner spiral oil grooves of sliding bearings on the market are generally machined using CNC lathes. Depending on the number of inner oil grooves, multiple turning operations are required, which is very slow. Often, a single oil groove needs to be turned multiple times, which greatly increases production time and production costs. Summary of the Invention

[0004] In view of this, the present invention provides a simple, easy-to-manufacture and easy-to-use one-time processing device for multiple oil grooves in internal holes to meet industrial needs.

[0005] A one-time machining device for multiple oil grooves in an internal hole includes an upper mold unit and a lower mold unit disposed on one side of the upper mold unit. The upper mold unit includes an upper template and an upper pressure sleeve disposed on the upper template. The lower mold unit includes a lower template, a mold base unit disposed on the lower template, a mandrel inserted into the mold base unit, a spring sleeved on the mandrel, and a cutting tool sleeved on the mandrel and abutting one end of the spring. The mold base unit includes a mandrel fixing seat disposed on the lower template and a sliding mold assembly disposed on the mandrel fixing seat. The sliding mold assembly includes a sliding mold frame fixed to the mandrel fixing seat, a gasket disposed on the sliding mold frame near one end of the mandrel fixing seat, a fixed mold housed within the sliding mold frame, and a sliding mold slidably connected to the gasket and housed within the sliding mold frame. The mandrel includes a mandrel body and at least one spiral groove disposed on the side wall of the mandrel body. The mandrel is sequentially inserted between the mandrel fixing seat, the fixed mold, and the sliding mold. The cutting tool includes a tool sleeve fitted onto the mandrel, multiple rows of tool tips arranged on the outer wall of the tool sleeve, and at least one guide pin arranged on the tool sleeve. The guide pin is inserted into the helical groove. When the upper die unit and the lower die unit process the workpiece, the central axes of the upper pressure sleeve, the mandrel, and the cutting tool coincide. The upper pressure sleeve can drive the cutting tool to slide along the mandrel, processing an inner helical oil groove on the inner wall of the workpiece.

[0006] Furthermore, the one-time processing device for multiple oil grooves in the inner hole also includes multiple guide rods disposed between the upper mold unit and the lower mold unit.

[0007] Furthermore, the lower die unit also includes a bearing sleeved on the mandrel and disposed at one end of the cutting tool.

[0008] Furthermore, the gasket includes a gasket body and a gasket through hole disposed on the gasket body.

[0009] Furthermore, the cutting edge of the cutter head is conical, and multiple rows of cutter heads are inclinedly arranged on the outer wall of the cutter sleeve, and the inclination direction of the cutter head rows is consistent with the inclination angle of the spiral groove.

[0010] Furthermore, the spacing between any two adjacent rows of cutter heads is equal.

[0011] Furthermore, the upper mold unit also includes a limiting rod fixedly connected to the upper mold plate. The limiting rod includes a limiting rod body, an avoidance groove provided at one end of the limiting rod body, and a driving groove provided on one side wall of the limiting rod body. The driving groove is inclined.

[0012] Furthermore, the lower mold unit also includes a limiting hole disposed on the lower mold plate, and the limiting rod corresponds to the limiting hole. When the upper mold unit and the lower mold unit process the workpiece, the limiting rod is inserted into the limiting hole.

[0013] Furthermore, the sliding mold assembly also includes a sliding drive rod disposed on the sliding mold.

[0014] Furthermore, the one-time processing device for multiple oil grooves in the inner hole also includes a sliding mold reset device disposed on the lower mold unit. The sliding mold reset device includes a mounting base, a connecting rod slidably connected to the mounting base and connected to the sliding drive rod, and a reset spring disposed at one end of the connecting rod and abutting against the mounting base. The reset spring is disposed on the side of the mounting base facing away from the sliding mold assembly. During the processing of the upper mold unit and the lower mold unit, the connecting rod and the clearance groove correspond to each other.

[0015] Compared with the prior art, the one-time processing device for multiple oil grooves in internal holes provided by the present invention forms a spiral groove on the side wall of the product by closing the upper mold unit and the lower mold unit. The upper mold unit has an upper pressure sleeve on its upper template, and the lower mold unit has a mold base unit on its lower template. A mandrel is inserted into the mold base unit, and a spring is sleeved on the mandrel. A cutting tool is sleeved on the mandrel and abuts against one end of the spring. The mandrel has a spiral groove on its main body side wall, the cutting tool has a tool sleeve sleeved on the mandrel, multiple rows of cutting tips are arranged on the outer side wall of the tool sleeve, and at least one guide pin is arranged on the tool sleeve. The guide pin is inserted into the helical groove of the mandrel. When the upper die unit and the lower die unit process the workpiece, the central axes of the upper pressure sleeve, the mandrel, and the cutting tool in the upper die unit coincide. The upper pressure sleeve can push against and drive the cutting tool to slide along the mandrel. Because the guide pin is guided into the helical groove of the mandrel, the cutting tool rotates along the helical groove. The tool head array fixed on the cutting tool presses the product according to the direction of the helical groove. This one-time machining device for multiple oil grooves in internal holes saves a significant amount of processing time. By changing the corresponding tools, it can be used for products of different specifications. Layered chip cutting ensures the dimensional accuracy of the grooves, greatly improving production efficiency. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of the one-time processing device for multiple oil grooves in the inner hole provided by the present invention.

[0017] Figure 2 for Figure 1 A cross-sectional structural diagram of a one-time machining device for multiple oil grooves in the inner hole.

[0018] Figure 3 for Figure 1 A schematic diagram of the cutting tool structure in a one-time machining device for multiple oil grooves in an inner hole.

[0019] Figure 4 for Figure 2 A schematic diagram of the mandrel structure in a one-time machining device with multiple oil grooves in the inner hole. Detailed Implementation

[0020] The following provides a more detailed description of specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the scope of protection of the present invention.

[0021] like Figures 1 to 4 The diagram shown is a structural schematic of the one-time machining device for multiple oil grooves in internal holes provided by the present invention. The device includes an upper mold unit 10, a lower mold unit 20 disposed on one side of the upper mold unit 10, multiple guide rods 30 disposed between the upper mold unit 10 and the lower mold unit 20, and a sliding mold resetting device 40 disposed on the lower mold unit 20. The device also includes other functional modules, such as assembly components, hydraulic presses, etc., which are technologies known to those skilled in the art and will not be described in detail here.

[0022] The upper mold unit 10 includes an upper mold plate 11, an upper pressure sleeve 12 disposed on the upper mold plate 11, and a limiting rod 13 fixedly connected to the upper mold plate 11.

[0023] The upper pressure sleeve 12 cooperates with the lower mold unit 20. The upper mold plate 11 is driven to move by the hydraulic press, and the upper pressure sleeve 12 abuts against the lower mold unit 20 to realize the forming of the workpiece. Therefore, the upper pressure sleeve 12 will be described in detail in conjunction with the lower mold unit 20.

[0024] The limiting rod 13 includes a limiting rod body 131, a clearance groove 132 disposed at the free end of the limiting rod body 131, and a drive groove 133 disposed on one side wall of the limiting rod body 131. The limiting rod 13 cooperates with the sliding mold assembly 222 described below, therefore the limiting rod 13 will be described in conjunction with the sliding mold assembly 222.

[0025] The lower mold unit 20 includes a lower mold plate 21, a mold base unit 22 disposed on the lower mold plate 21, a core rod 23 inserted into the mold base unit 22, a spring 24 sleeved on the core rod 23, a cutting tool 25 sleeved on the core rod 23 and abutting one end of the spring 24, a bearing 26 sleeved on the core rod 23 and disposed at one end of the cutting tool 25, and a limiting hole 27 disposed on the lower mold plate 21.

[0026] The lower template 21 is used to support the mold base unit 22, the mandrel 23, the spring 24, and the cutting tool 25, forming the mold base unit 22, the mandrel 23, the spring 24, and the cutting tool 25 into a whole. The lower template 21 is a prior art and will not be described in detail here.

[0027] The mold base unit 22 includes a mandrel fixing seat 221 disposed on the lower template 21 and a sliding mold assembly 222 disposed on the mandrel fixing seat 221.

[0028] The mandrel holder 221 is used to install the mandrel 23, so that the mandrel 23 passes through the sliding mold assembly 222 and guides the cutting tool 25 on the mandrel 23 to slide. The mandrel holder 221 is a prior art and will not be described in detail here.

[0029] The sliding mold assembly 222 includes a sliding mold frame 2221 fixed on the mandrel fixing seat 221, a gasket 2222 disposed on one end of the sliding mold frame 2221 near the mandrel fixing seat 221, a fixed mold 2223 housed in the sliding mold frame 2221, a sliding mold 2224 slidably connected to the gasket 222 and housed in the sliding mold frame 2221, and a sliding drive rod 2225 disposed on the sliding mold 2224.

[0030] The gasket 2222 includes a gasket body 2222a and a gasket through hole 2222b disposed on the gasket body 2222a. The gasket through hole 2222b is used to connect the mandrel fixing seat 221 and the sliding mold frame 2221, so that when the cutting tool 25 slides along the mandrel 23, the cutting tool 25 can move between the mandrel fixing seat 221 and the sliding mold frame 2221.

[0031] The sliding drive rod 2225 cooperates with the limiting rod 13. A drive groove 133 is provided on one side of the limiting rod 13. The drive groove 133 is inclined. During the pressing down of the upper template 11, the sliding drive rod 2225 abuts against the drive groove 133 of the limiting rod 13. The inclination of the drive groove 133 drives the sliding drive rod 2225 to push the sliding mold 2224 forward, thereby realizing the mold closing of the sliding mold 2224 and the fixed mold 2223.

[0032] The mandrel 23 includes a mandrel body 231 and a plurality of spiral grooves 232 disposed on the side wall of the mandrel body. The spiral grooves 232 guide the cutting tool 25 to move up and down, thereby realizing the spiral sliding of the cutting tool 25. The mandrel 23 will be described in detail in conjunction with the cutting tool 25.

[0033] The spring 24 is sleeved on the outside of the mandrel 23. The spring 24 is a prior art technology. The spring 24 cooperates with the cutting tool 25 to drive the cutting tool 25 to reset.

[0034] The cutting tool 25 includes a tool sleeve 251 sleeved on the mandrel 23, multiple rows of tool tips 252 arranged on the outer wall of the tool sleeve 251, and at least one guide pin 253 arranged on the tool sleeve 251.

[0035] The cutter head array 252 includes multiple cutter heads 2521, which are arranged at an angle in a row, i.e., the cutter head array 252 is inclined. The inclination direction of the cutter head array 252 is consistent with the inclination angle of the helical groove 232. Therefore, during cutting, the cutter head array 252 and the helical groove 232 are aligned, facilitating cutting on the inner wall of the product. The cutting edges of the cutter heads 2521 are tapered, and the distance between any two adjacent cutter head arrays 252 is equal. The guide pin 253 passes through the inner wall of the tool sleeve 251 and is inserted into the spiral groove 232, so that the cutting tool 25 can slide along the spiral groove 232 to process the inner spiral oil groove on the inner wall of the product.

[0036] The bearing 26 is disposed at one end of the cutting tool 25. When the upper mold unit 10 and the lower mold unit 20 are closed, the upper pressure sleeve 12 presses down on the bearing 26 to prevent the upper pressure sleeve 12 from hindering the cutting tool 25 from sliding along the mandrel 23.

[0037] The limiting hole 27 corresponds to the limiting rod 13. When the upper mold unit 10 and the lower mold unit 20 process the workpiece, the limiting rod 13 is inserted into the limiting hole 27 to limit the processing position between the upper mold unit 10 and the lower mold unit 20.

[0038] The guide rod 30 is disposed between the upper mold unit 10 and the lower mold unit 20. The guide rod 30 guides the sliding of the upper mold unit 10 and the lower mold unit 20 to improve the sliding stability between the upper mold unit 10 and the lower mold unit 20. The guide rod 30 is a prior art and will not be described in detail here.

[0039] The sliding mold reset device 40 includes a mounting base 41 disposed on the lower mold plate 21, a connecting rod 42 slidably connected to the mounting base 41 and connected to the sliding drive rod, and a reset spring 43 disposed at one end of the connecting rod 42 and abutting against the mounting base 41. The reset spring 43 is disposed on the side of the mounting base 41 facing away from the sliding mold assembly 222. After the upper mold unit 10 and the lower mold unit 20 have finished processing, the connecting rod 42 can pull the sliding drive rod by the elastic force of the reset spring 43, thereby separating the fixed mold 2223 from the sliding mold assembly 2224, so as to place the product to be processed between the fixed mold 2223 and the sliding mold assembly 2224. Furthermore, during the processing of the upper mold unit 10 and the lower mold unit 20, the connecting rod 42 corresponds to the clearance groove 132 to ensure that the limiting rod 13 of the upper mold unit 10 can be pressed down smoothly, and the limiting rod 13 drives the sliding drive rod 2225 to slide.

[0040] When the multi-oil groove one-time processing device for internal holes is processing, the upper mold unit 10 in the device is driven by an external clamping device (not shown) to achieve mold closing between the upper mold unit 10 and the lower mold unit 20. When the upper mold unit 10 and the lower mold unit 20 are closed, the product is first placed between the fixed mold 2223 and the sliding mold assembly 2224. The sliding mold 2224 is provided with a push rod, and the upper template 11 is provided with a limiting rod 13. A driving groove 133 is provided on one side of the limiting rod 13. The driving groove 133 is inclined. During the downward pressing of the upper template 11, the sliding driving rod 2225 abuts against the driving groove 133 of the limiting rod 13. The inclination of the driving groove 133 drives the sliding driving rod 2225 to push the sliding mold 2224 forward. The fixed mold 2223 and the sliding mold 2224 clamp the product. After the fixed mold 2223 and the sliding mold 2224 are clamped together, the mold continues to close. The upper pressure sleeve 12 presses down on the bearing 26, which is located at one end of the cutting tool 25. A guide pin 253 inside the cutting tool 25 is inserted into the helical groove 232 of the mandrel 23. As the mold closes further, under pressure, the bearing 26 rotates along the helical groove 23 due to the guide pin 253 guiding the mandrel 23. The cutter head array 252 fixed on the cutting tool 25 presses the product according to the direction of the helical groove 23. Furthermore, the inclination angle of the cutter head array 252 is consistent with the angle of the helical groove 232, thereby ensuring the dimensional accuracy of the cutter head array 252 cutting along the helical groove 232.

[0041] Compared with the prior art, the one-time processing device for multiple oil grooves in internal holes provided by the present invention forms a spiral groove on the side wall of the product by closing the upper mold unit 10 and the lower mold unit 20. The upper mold unit 10 has an upper pressure sleeve 12 on the upper template 11, and the lower mold unit 20 has a mold base unit 22 on the lower template 21. A mandrel 23 is inserted into the mold base unit 22, and a spring 24 is sleeved on the mandrel 23. A cutting tool 25 is sleeved on the mandrel 23 and abuts against one end of the spring 24. The mandrel 23 has a spiral groove 232 on the side wall of the mandrel body 231, the cutting tool 25 has a tool sleeve 251 sleeved on the mandrel 23, multiple rows of tool tips 252 are arranged on the outer side wall of the tool sleeve 251, and at least one guide pin 253 is arranged on the tool sleeve 251. The guide pin 253 is inserted into the spiral groove 232 of the mandrel 23. When the upper die unit 10 and the lower die unit 20 process the workpiece, the central axes of the upper pressure sleeve 12, the mandrel 23, and the cutting tool 25 in the upper die unit 10 coincide. The upper pressure sleeve 12 can push and drive the cutting tool 25 to slide along the mandrel 32. Due to the guide pin 253 being guided into the spiral groove 23 of the mandrel 23, the cutting tool 25 will rotate along the spiral groove 23. The tool head array 252 fixed on the cutting tool 25 presses the product according to the direction of the spiral groove 23. This one-time processing device for multi-oil grooves in internal holes saves a lot of processing time. By changing the corresponding tools, it can be used for products of different specifications. Layered chip cutting ensures the accuracy of the groove dimensions, greatly improving production efficiency.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, or improvements within the spirit of the present invention are covered within the scope of the claims of the present invention.

Claims

1. A one-time processing device for multiple oil grooves in an inner hole, characterized in that: The one-time machining device for multiple oil grooves in an inner hole includes an upper mold unit and a lower mold unit disposed on one side of the upper mold unit. The upper mold unit includes an upper template and an upper pressure sleeve disposed on the upper template. The lower mold unit includes a lower template, a mold base unit disposed on the lower template, a mandrel inserted into the mold base unit, a spring sleeved on the mandrel, and a cutting tool sleeved on the mandrel and abutting one end of the spring. The mold base unit includes a mandrel fixing seat disposed on the lower template and a sliding mold assembly disposed on the mandrel fixing seat. The sliding mold assembly includes a component fixed to the mandrel. The system comprises a sliding mold frame on a fixed base, a gasket disposed at one end of the sliding mold frame near the mandrel fixed base, a fixed mold housed within the sliding mold frame, and a sliding mold slidably connected to the gasket and housed within the sliding mold frame. The mandrel includes a mandrel body and at least one spiral groove disposed on the side wall of the mandrel body. The mandrel is sequentially inserted between the mandrel fixed base, the fixed mold, and the sliding mold. The cutting tool includes a tool sleeve sleeved on the mandrel, multiple rows of cutting tips disposed on the outer side wall of the tool sleeve, and at least one guide pin disposed on the tool sleeve. The guide pin is inserted into the spiral groove. When the upper mold unit and the lower mold unit process the workpiece, the central axes of the upper pressure sleeve, the mandrel, and the cutting tool coincide. The upper pressure sleeve can drive the cutting tool to slide along the mandrel to process an inner spiral oil groove on the inner side wall of the workpiece.

2. The one-time machining device for multiple oil grooves in internal holes as described in claim 1, characterized in that: The one-time processing device for multiple oil grooves in the inner hole also includes multiple guide rods disposed between the upper mold unit and the lower mold unit.

3. The one-time machining device for multiple oil grooves in internal holes as described in claim 1, characterized in that: The lower die unit also includes a bearing sleeved on the mandrel and located at one end of the cutting tool.

4. The one-time machining device for multiple oil grooves in internal holes as described in claim 1, characterized in that: The gasket includes a gasket body and a gasket through hole disposed on the gasket body.

5. The one-time machining device for multiple oil grooves in internal holes as described in claim 1, characterized in that: The cutting edge of the cutter head is conical, and multiple rows of cutter heads are inclinedly arranged on the outer wall of the cutter sleeve, and the inclination direction of the cutter head rows is consistent with the inclination angle of the spiral groove.

6. The one-time machining device for multiple oil grooves in internal holes as described in claim 1, characterized in that: The spacing between any two adjacent rows of cutter heads is equal.

7. The one-time machining device for multiple oil grooves in internal holes as described in claim 1, characterized in that: The upper mold unit also includes a limiting rod fixedly connected to the upper mold plate. The limiting rod includes a limiting rod body, an avoidance groove provided at one end of the limiting rod body, and a driving groove provided on one side wall of the limiting rod body. The driving groove is inclined.

8. The one-time machining device for multiple oil grooves in internal holes as described in claim 7, characterized in that: The lower mold unit also includes a limiting hole provided on the lower mold plate. The limiting rod corresponds to the limiting hole. When the upper mold unit and the lower mold unit process the workpiece, the limiting rod is inserted into the limiting hole.

9. The one-time machining device for multiple oil grooves in internal holes as described in claim 7, characterized in that: The sliding mold assembly also includes a sliding drive rod disposed on the sliding mold.

10. The one-time machining device for multiple oil grooves in internal holes as described in claim 9, characterized in that: The one-time processing device for multiple oil grooves in the inner hole also includes a sliding mold reset device disposed on the lower mold unit. The sliding mold reset device includes a mounting base, a connecting rod slidably connected to the mounting base and connected to the sliding drive rod, and a reset spring disposed at one end of the connecting rod and abutting against the mounting base. The reset spring is disposed on the side of the mounting base facing away from the sliding mold assembly. During the processing of the upper mold unit and the lower mold unit, the connecting rod and the clearance groove correspond to each other.

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