Oblique spraying type rotating shaft for grinding wheel
By designing an oblique spray shaft for the grinding wheel, a cooling liquid curtain is formed using the guide channel and liquid outlet, solving the problem of low coolant utilization, achieving efficient cooling and production stability, and improving processing quality and precision.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2026-03-31
AI Technical Summary
The existing coolant spraying method has a low coolant utilization rate during grinding, resulting in poor cooling effect, especially when the inner hole of the workpiece is shallow, heat is difficult to dissipate effectively.
A slanted spray shaft for grinding wheels is designed. By setting a flow guide channel and a liquid outlet on the shaft, the coolant is sprayed out from the acute angle liquid outlet to form a coolant curtain, which increases the contact area with the grinding wheel and the workpiece. The flow and spray angle of the coolant are optimized by using a flow divider column and a flow guide ring.
It improves cooling efficiency, reduces temperature in the grinding zone, minimizes thermal deformation, and enhances machining quality and precision. At the same time, it reduces spindle vibration, improves production stability, and lowers costs.
Smart Images
Figure CN224059551U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of cooling technology for grinding devices, and in particular to a slanted spray type rotating shaft for grinding wheels. Background Technology
[0002] Internal grinding is a machining process that involves grinding the inner hole of a workpiece on a grinding machine to achieve the required roundness, dimensional accuracy, and surface roughness.
[0003] The device for grinding the inner hole of a workpiece mainly includes a grinding wheel and a grinding wheel spindle. One end of the grinding wheel is connected to the power source of the grinding device, and the grinding wheel and the other end of the grinding wheel spindle are coaxially fixedly connected. When it is necessary to grind the inner hole of the workpiece, the grinding wheel is rotated by the grinding wheel spindle, and the grinding wheel contacts the inner hole wall of the workpiece through the outer ring wall of the grinding wheel.
[0004] When the inner hole of a workpiece is relatively shallow, the length of the grinding wheel is relatively short. When the grinding wheel grinds the inner wall of the workpiece, it generates a large amount of heat, generally requiring cooling of the grinding wheel, the inner wall of the workpiece, and the machined surface. Existing cooling devices typically include cooling pipes installed near the inner hole of the workpiece. Coolant flows through the cooling pipes, and when the grinding wheel grinds the inner wall of the workpiece, coolant is sprayed onto the grinding wheel through the cooling pipes.
[0005] However, the coolant sprayed from the cooling pipe is generally sprayed in a columnar shape onto a local area of the grinding wheel, and is cooled by contact with the grinding wheel wall. However, when the coolant is sprayed directly onto the grinding wheel in a columnar shape, most of the coolant is easily splashed away, resulting in low utilization of the coolant. Utility Model Content
[0006] To facilitate cooling of shorter grinding wheels, this application provides a slanted spray type rotating shaft for grinding wheels.
[0007] The technical solution provided in this application for a slanted jet type rotating shaft for grinding wheels is as follows:
[0008] A slanted jet spindle for a grinding wheel includes a first spindle body and a second spindle body, wherein:
[0009] The first shaft is provided with a guide channel through which coolant flows;
[0010] The flow channel penetrates the outer wall of the first shaft;
[0011] The angle between the centerline of the liquid outlet of the guide channel and the axis of the first shaft is set at an acute angle.
[0012] The second shaft is used for coaxial mounting of the grinding wheel.
[0013] Optionally, the outlet of the flow channel is located on the outer wall of the first shaft.
[0014] Optionally, multiple liquid outlets are distributed along the axial and circumferential directions of the first shaft.
[0015] The flow channel is equipped with a flow divider column coaxially inside;
[0016] The flow divider column is equipped with a flow guide groove;
[0017] Multiple guide channels are provided circumferentially along the axis of the flow divider column.
[0018] Optionally, a guide ring is fitted onto the first shaft;
[0019] The flow diversion channel includes a first channel and a second channel;
[0020] The first channel is located inside the first shaft;
[0021] The second channel is located inside the flow guide ring;
[0022] The liquid outlet is located on the guide ring.
[0023] Optionally, the first channel includes a main channel and sub-channels;
[0024] The sub-channel connects the main channel and the second channel.
[0025] The centerline of the main channel is coaxial with the first axis.
[0026] The branch channel penetrates the outer wall of the first shaft;
[0027] The centerline of the channel is perpendicular to the axis of the first shaft.
[0028] Optionally, the inlet end of the second channel is provided with a guide surface.
[0029] Optionally, a positioning block is provided on the outer wall of the second shaft;
[0030] The guide ring and the positioning block are in contact.
[0031] Optionally, the guide ring is provided with grooves;
[0032] The positioning block and the groove are inserted and fitted together.
[0033] In summary, this application includes at least one of the following beneficial technical effects:
[0034] 1. The grinding wheel uses an angled spray shaft design to spray coolant from the outlet at an angle. When the shaft rotates, it forms a coolant curtain, which increases the contact area with the grinding wheel and the workpiece, enhances the cooling effect, reduces the temperature of the grinding area, reduces thermal deformation, and improves the processing quality and precision.
[0035] 2. The shaft structure is reasonably designed, with multiple liquid outlets and diversion columns to ensure balanced rotation and reduce vibration; the diversion channels are perpendicular to the axis, which facilitates drilling, improves the convenience and stability of production and manufacturing, optimizes the production process, and reduces production difficulty and cost.
[0036] 3. The modular design allows for the customization of components with different outlet angles to meet varying spray angle requirements, reducing adaptation costs. The stable fit between components and the guide surface design ensure smooth flow and spraying of coolant, improving overall operational reliability and guaranteeing stable equipment operation. Attached Figure Description
[0037] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.
[0038] Figure 2 This is a schematic diagram illustrating the diversion column structure in Embodiment 2 of this application.
[0039] Figure 3 This is a schematic diagram illustrating the flow guide ring structure in Embodiment 3 of this application.
[0040] Figure 4 This is a schematic diagram illustrating the first channel structure in Embodiment 4 of this application.
[0041] Figure 5 This is a schematic diagram illustrating the positional relationship between the positioning block and the groove in Embodiment 5 of this application.
[0042] Figure 6 This is a schematic diagram illustrating the positional relationship of the guide surfaces in Embodiment 6 of this application.
[0043] Explanation of reference numerals in the attached figures:
[0044] 1. First shaft; 11. Positioning block; 2. Second shaft; 3. Flow guide channel; 31. Liquid outlet; 32. First channel; 321. Main channel; 322. Sub-channel; 33. Second channel; 4. Grinding wheel; 5. Flow divider column; 51. Flow guide groove; 6. Flow guide ring; 61. Groove; 62. Flow guide surface. Detailed Implementation
[0045] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.
[0046] Example 1
[0047] Embodiment 1 of this application discloses a slanted spray type rotating shaft for grinding wheels.
[0048] A grinding wheel oblique spray type spindle includes a first spindle body 1 and a second spindle body 2. The first spindle body 1 and the second spindle body 2 are coaxially arranged and integrally formed. The first spindle body 1 has a guide channel 3 for passing through coolant, the guide channel 3 penetrates the outer wall of the first spindle body 1, and the center line of the outlet 31 of the guide channel 3 forms an acute angle with the axis of the first spindle body 1. The second spindle body 2 is used to coaxially mount the grinding wheel 4.
[0049] The flow channel 3 guides the coolant, which is sprayed from the outlet 31 onto the grinding surface of the grinding wheel 4 and the inner hole of the workpiece. The first shaft 1 is connected to the power source. As the shaft rotates around its own axis, the coolant sprayed from the outlet 31 rotates synchronously, forming a preliminary coolant curtain. This increases the contact area between the coolant, the grinding wheel 4, and the workpiece, improving the cooling effect. The outlet 31 of the flow channel 3 is located on the outer wall of the first shaft 1, allowing the coolant to be sprayed directly from the first shaft 1 onto the grinding wheel 4 and the workpiece, resulting in a simple structure.
[0050] The implementation principle of the oblique spray type rotating shaft for grinding wheels in Embodiment 1 of this application is as follows: When the oblique spray type rotating shaft for grinding wheels is working, coolant flows out from the internal guide channel 3 of the first shaft body 1, and is sprayed onto the grinding surface of the grinding wheel 4 and the inner hole of the workpiece through the outlet 31 located on the outer wall at an acute angle to the axis. When the first shaft body 1 is connected to the power source and rotates around its own axis, the sprayed coolant rotates synchronously to form a coolant curtain, expanding the contact surface with the grinding wheel 4 and the workpiece to enhance the cooling effect. Its structure is simple and requires no additional parts.
[0051] Example 2
[0052] The difference between this embodiment 2 and embodiment 1 is that multiple outlets 31 are distributed circumferentially along the axial direction of the first shaft 1, and a diversion column 5 is coaxially provided inside the flow channel 3. A flow guide groove 51 is provided on the diversion column 5, and multiple flow guide grooves 51 are provided circumferentially along the axial direction of the diversion column 5.
[0053] When the coolant is sprayed out from the outlet 31, the multiple outlets 31 help to keep the first shaft 1 in a balanced state during rotation, reducing the possibility of vibration of the first shaft 1.
[0054] The diverter column 5 is installed inside the flow channel 3, and the diverter column 5 and the first shaft 1 are coaxially arranged. The outer wall of the diverter column 5 is provided with multiple flow channels 51, which directly guide the coolant into the corresponding outlet 31, reducing the possibility of turbulence in the coolant inside the flow channel 3 affecting the balance of the first shaft 1.
[0055] The inner wall of the flow channel 3 is arc-shaped so that the coolant can smoothly transition to the outlet 31 after being split, thus reducing the flow resistance of the coolant.
[0056] The implementation principle of the oblique spray type rotating shaft for grinding wheels in Embodiment 2 of this application is as follows: coolant flows in the guide channel 3 of the first shaft 1, and multiple guide grooves 51 on the diverter column 5 guide the coolant into the corresponding outlet 31. The multiple outlets 31 are distributed circumferentially along the axis of the first shaft 1, so that the first shaft 1 maintains balance when rotating and reduces the possibility of vibration. The inner wall of the guide channel 3 is arc-shaped, so that the coolant smoothly transitions to the outlet 31, reducing resistance. The diverter column 5 and the first shaft 1 are coaxially arranged to avoid the formation of turbulence in the guide channel 3, which would affect the balance of the first shaft 1.
[0057] Example 3
[0058] The difference between Embodiment 3 and Embodiment 1 is that a guide ring 6 is fitted onto the first shaft 1. The guide channel 3 includes a first channel 32 and a second channel 33. The first channel 32 is located inside the first shaft 1, and the second channel 33 is located inside the guide ring 6. The outlet 31 is located on the guide ring 6. Coolant flows from the first channel 32 inside the first shaft 1 to the second channel 33 on the guide ring 6 and is discharged from the outlet 31 on the guide ring 6. Since the first shaft 1 and the guide ring 6 are combined, it is convenient to design guide rings 6 with different outlet 31 inclination angles according to different spray angle requirements, thereby reducing the cost of adapting to different spray angles.
[0059] The implementation principle of the oblique spray type rotating shaft for grinding wheels in Embodiment 3 of this application is as follows: coolant flows from the first channel 32 inside the first shaft body 1 to the second channel 33 on the guide ring 6, and then is discharged from the outlet 31 on the guide ring 6. The first shaft body 1 is fitted with the guide ring 6, and the guide channel 3 is composed of the first channel 32 and the second channel 33. Since the first shaft body 1 and the guide ring 6 are a combined design, guide rings 6 with different outlet 31 inclination angles can be manufactured according to different spray angle requirements, reducing the cost of adapting to different spray angles.
[0060] Example 4
[0061] The difference between Embodiment 4 and Embodiment 3 is that the first channel 32 includes a main channel 321 and a sub-channel 322. The sub-channel 322 connects the main channel 321 and the second channel 33. The center line of the main channel 321 is coaxial with the first shaft 1. The sub-channel 322 penetrates the outer wall of the first shaft 1. The center line of the sub-channel 322 is perpendicular to the axis of the first shaft 1.
[0062] When the drill bit opens the sub-channel 322 on the first shaft 1, the center line of the sub-channel 322 is perpendicular to the axis of the first shaft 1, which improves the convenience and stability of the drill bit opening the hole.
[0063] The implementation principle of the oblique spray type rotating shaft for grinding wheels in Embodiment 4 of this application is as follows: the coolant enters the second channel 33 of the guide ring 6 through the main channel 321 of the first shaft body 1, through the branch channel 322 perpendicular to the axis of the first shaft body 1, and then exits from the outlet 31. This design makes drilling more convenient and stable, optimizes the production process, and achieves efficient spraying of coolant onto the grinding wheel 4 and the grinding surface of the workpiece.
[0064] Example 5
[0065] A positioning block 11 is provided on the outer wall of the second shaft 2. The guide ring 6 contacts the positioning block 11, and the guide ring 6 has a groove 61. The positioning block 11 is inserted into the groove 61. To facilitate the first shaft 1 to be in a balanced state, multiple positioning blocks 11 are provided circumferentially along the axis of the first shaft 1. The positioning ring is placed after the groove 61 of the guide ring 6, and the second channel 33 and the first channel 32 are connected.
[0066] The implementation principle of the oblique spray type rotating shaft for grinding wheels in Embodiment 5 of this application is as follows: the positioning block 11 on the outer wall of the second shaft body 2 is inserted and fitted with the groove 61 on the guide ring 6 to ensure the stable installation of the guide ring 6. Multiple positioning blocks 11 are arranged circumferentially along the axis of the first shaft body 1, which helps maintain the balance of the first shaft body 1. The positioning ring is located after the groove 61 of the guide ring 6, realizing the connection between the second channel 33 and the first channel 32, ensuring smooth flow of coolant. This structural design not only ensures precise fit between components but also improves the overall balance and stability of the rotating shaft, thereby ensuring that the coolant can be sprayed evenly and effectively onto the grinding surface of the grinding wheel 4 and the workpiece, enhancing the cooling effect.
[0067] Example 6
[0068] The difference between Embodiment 6 and Embodiment 3 is that the inlet end of the second channel 33 is provided with a guide surface 62, and the inner wall of the inlet end of the second channel 33 is conical, so that the coolant in the first channel 32 can flow into the interior of the second channel 33 quickly, reducing the resistance of the guide ring 6 from the coolant, reducing the possibility of displacement of the guide ring 6, and at the same time, ensuring that the amount of coolant sprayed from the outlet 31 is within a set value, while reducing the possibility of coolant overflowing from between the guide ring 6 and the second shaft 2.
[0069] The implementation principle of the oblique spray type rotating shaft for grinding wheels in Embodiment 6 of this application is as follows: The guide surface 62 at the inlet end of the second channel 33 is designed so that the coolant can flow quickly from the first channel 32 into the second channel 33. The inner wall of the inlet end is conical, which not only reduces the possibility of displacement of the guide ring 6 due to coolant resistance, but also ensures that the coolant volume at the outlet 31 is stable at the set value, and at the same time reduces the risk of coolant overflowing from the guide ring 6 and the second shaft 2.
[0070] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A slanting spray type rotating shaft for a grinding wheel, characterized by: The first shaft body and the second shaft body are included, wherein: The first shaft body is provided with a flow guide channel into which cooling liquid flows; The flow guide channel penetrates the outer wall of the first shaft body; The included angle between the center line of the flow guide channel outlet and the axis of the first shaft body is an acute angle; The second shaft body is used to coaxially install the grinding wheel.
2. The inclined spray type rotating shaft for a grinding wheel according to claim 1, characterized in that: The flow guide channel outlet is arranged on the outer wall of the first shaft body.
3. The inclined spray type rotating shaft for a grinding wheel according to claim 1, characterized in that: The flow guide channel outlet is arranged on the outer wall of the first shaft body.
4. The inclined spray type rotating shaft for a grinding wheel according to claim 1, characterized in that: The first shaft body is provided with a flow guide ring; The flow guide channel includes a first channel and a second channel; The first channel is arranged inside the first shaft body; The second channel is arranged inside the flow guide ring; The flow guide channel outlet is arranged on the flow guide ring.
5. The inclined spray type rotating shaft for a grinding wheel according to claim 4, characterized in that: The first channel includes a main channel and a branch channel; The branch channel is connected to the main channel and the second channel The center line of the main channel is coaxial with the first shaft body; The branch channel penetrates the outer wall of the first shaft body; The center line of the branch channel is perpendicular to the axis of the first shaft body.
6. The inclined spray type rotating shaft for a grinding wheel according to claim 4, characterized in that: The inlet end of the second channel is provided with a flow guide surface.
7. The inclined spray type rotating shaft for a grinding wheel according to claim 4, characterized in that: The outer wall of the second shaft body is provided with a positioning block; The flow guide ring and the positioning block are in contact.
8. The inclined spray type rotating shaft for a grinding wheel according to claim 7, characterized in that: The flow guide ring is provided with a groove; The positioning block is inserted into the groove in a fitting manner.