Thick and thin hand wheel adjusting device
By combining sensing components and sensing elements, and using photoelectric encoders and electromagnetic encoders to achieve coaxial adjustment of dual wheels, the problem of complex mechanical handwheel structure is solved, and high-precision electronic dual-axis coaxial rotation detection and simplified structure are realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BOARDSTONE INTELLIGENT (SHENZHEN) CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-19
AI Technical Summary
Existing dual-wheel coaxial adjustment handwheels are generally mechanical, using multiple sets of gears or racks for transmission, resulting in complex structures and difficulty in compatibility with different loads.
The coarse and fine handwheel adjustment device, composed of sensing components and sensing elements, uses a reflective incremental photoelectric encoder and an electromagnetic encoder to achieve coarse and fine adjustment respectively, eliminating the need for gear or rack transmission and resulting in a simple structure.
It achieves high-precision electronic dual-axis coaxial rotation detection, simplifies the structure, improves compatibility and disassembly efficiency, and meets the requirements for high-precision coaxial coarse and fine adjustment.
Smart Images
Figure CN224263574U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photoelectric coding and sensing technology, specifically to a coarse and fine handwheel adjustment device. Background Technology
[0002] A dual-wheel coaxial adjustment handwheel is a device that allows independent adjustment of two different parameters through two concentrically positioned knobs or wheels. This design allows users to operate two functions simultaneously on the same axis, saving space and providing ease of operation. Dual-wheel coaxial adjustment handwheels have many applications; for example, in CNC machine tools, handwheels are commonly used to manually control the machine tool's motion axes. By rotating the handwheel, the operator can precisely adjust the machine tool's feed rate or position, especially during debugging or fine-tuning stages.
[0003] However, existing dual-wheel coaxial adjustment handwheels still have shortcomings. For example, the existing dual-wheel coaxial adjustment handwheels are generally mechanical, using multiple sets of gears or racks to achieve transmission and adjust the movement distance of the equipment, resulting in a complex structure. Utility Model Content
[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a coarse and fine handwheel adjustment device to solve the technical problem that the existing double-wheel coaxial adjustment handwheels are generally mechanical, and the transmission is achieved through multiple sets of gears or racks to adjust the movement distance of the equipment, which is complex in structure.
[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:
[0006] This utility model provides a coarse / fine handwheel adjustment device, comprising:
[0007] The sensing component includes a fixed housing and a first sensor and a second sensor disposed on the fixed housing, wherein the single-turn resolution of the second sensor is higher than that of the first sensor.
[0008] A coarse adjustment assembly includes a coarse adjustment knob and a first sensing element connected to each other. The coarse adjustment knob is rotatably mounted on the fixed housing and, when rotated, drives the first sensing element to sense the first sensor.
[0009] The fine adjustment assembly includes a fine adjustment knob and a second sensor connected to each other. The fine adjustment knob is rotatably mounted on the fixed housing and is arranged on the same rotation axis as the coarse adjustment knob. The diameter of the fine adjustment knob is smaller than the diameter of the coarse adjustment knob. The fine adjustment knob can drive the second sensor to sense the second sensor when rotated.
[0010] In some embodiments, the sensing component further includes a PCB board disposed on the fixed housing, the second sensor being disposed at the center of the PCB board, and the first sensor being disposed at a position off-center from the center of the PCB board.
[0011] In some embodiments, the first sensor is a reflective incremental photoelectric encoder, the first sensing element is a reflective grating code disk, the reflective grating code disk has a plurality of light holes along its periphery, and can drive the plurality of light holes to pass through the light emitted by the reflective incremental photoelectric encoder one by one when rotating.
[0012] In some embodiments, the second sensor is an electromagnetic encoder, the second sensing element is a magnet, and the center of the magnet and the center of the electromagnetic encoder are both located on the rotation axis of the fine adjustment knob.
[0013] In some embodiments, the fixed shell includes a bottom shell, a connector, and a limiting member. The two ends of the connector connect the bottom shell and the limiting member. The coarse adjustment knob is sleeved on the connector, and the limiting member drives the coarse adjustment knob to rotate and abut against the bottom shell.
[0014] In some embodiments, the coarse adjustment knob includes an adjustment body and an inner edge, the inner edge being disposed on the inner wall of the adjustment body, the first sensing element being disposed on the side of the inner edge facing the bottom shell, the coarse adjustment assembly further includes a first corrugated pad, and the limiting member abuts against the side of the inner edge facing away from the first sensing element through the first corrugated pad.
[0015] In some embodiments, the fixed housing further includes a bearing, the outer ring of which is connected to the connector, and the fine adjustment assembly further includes a rotating shaft, the two ends of which are connected to the fine adjustment knob and the second sensing element, and the rotating shaft passes through and is connected to the inner ring of the bearing.
[0016] In some embodiments, the fine adjustment assembly further includes a mounting screw that passes through the fine adjustment knob and is threaded to the end of the shaft away from the second sensor.
[0017] In some embodiments, the fine adjustment assembly further includes a second corrugated washer and a limiting nut, the second corrugated washer being sleeved on the rotating shaft, and the limiting nut being threaded to the outer wall of the rotating shaft and driving the second corrugated washer to abut against the connector.
[0018] In some embodiments, the fine adjustment knob has a covering flange at one end near the coarse adjustment knob, the covering flange extending obliquely toward and close to the inner wall of the coarse adjustment knob.
[0019] Compared with existing technologies, the coarse and fine handwheel adjustment device provided by this utility model has a coarse adjustment knob that, when rotated, drives a first sensing element to rotate, causing the first sensing element to sense a first sensor. The first sensor generates a sensing signal that reflects the angle of rotation of the coarse adjustment knob. Similarly, the fine adjustment knob, when rotated, drives a second sensing element to rotate, causing the second sensing element to sense a second sensor. The second sensor generates a sensing signal that reflects the angle of rotation of the fine adjustment knob. By connecting the first and second sensors to the working equipment, certain functional states of the working equipment can be precisely adjusted by rotating the coarse and fine adjustment knobs. The coarse and fine handwheel adjustment device of this utility model does not require the use of gears or racks for transmission to adjust the movement distance of the equipment, resulting in a simple structure. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the coarse / fine handwheel adjustment device provided in this embodiment of the utility model;
[0021] Figure 2 This is a cross-sectional structural schematic diagram of the coarse and fine handwheel adjustment device provided in this embodiment of the utility model;
[0022] Figure 3 This is a schematic diagram of the PCB board structure provided in this embodiment of the utility model;
[0023] Figure 4 This is a schematic diagram of the structure of the first sensing element provided in this embodiment of the utility model;
[0024] Figure 5 This is a cross-sectional structural diagram of the coarse and fine handwheel adjustment device provided in this embodiment of the utility model after the fine adjustment component has been removed;
[0025] Figure 6 This is a schematic diagram of the coarse and fine handwheel adjustment device provided in this embodiment of the utility model after the coarse adjustment component has been removed. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0027] To address the technical problem that existing dual-wheel coaxial adjustment handwheels are generally mechanical, using multiple sets of gears or racks to adjust the movement distance of the equipment, resulting in complex structures and difficulty in compatibility with different loads, this utility model provides a coarse and fine handwheel adjustment device that can achieve this.
[0028] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the coarse and fine handwheel adjustment device in one embodiment of the present invention. The coarse and fine handwheel adjustment device includes a sensing component 1, a coarse adjustment component 2 and a fine adjustment component 3. The sensing component 1 includes a fixed housing 11 and a first sensor 12 and a second sensor 13 disposed on the fixed housing 11. The single-turn resolution of the second sensor 13 is higher than that of the first sensor 12.
[0029] The coarse adjustment assembly 2 includes a coarse adjustment knob 21 and a first sensor 22 connected to each other. The coarse adjustment knob 21 is rotatably mounted on the fixed housing 11 and can drive the first sensor 22 to sense the first sensor 12 when rotated; and
[0030] The fine adjustment assembly 3 includes a fine adjustment knob 31 and a second sensor 32 connected to each other. The fine adjustment knob 31 is rotatably mounted on the fixed housing 11 and is set on the same rotation axis as the coarse adjustment knob 21. The diameter of the fine adjustment knob 31 is smaller than the diameter of the coarse adjustment knob 21. When the fine adjustment knob 31 is rotated, it can drive the second sensor 32 to sense the second sensor 13.
[0031] In this embodiment, the first sensor 12 and the second sensor 13 can be connected to a working device, such as a machine tool. After being connected to the machine tool, the operator can adjust certain functions of the machine tool, such as adjusting the offset of the machine tool cutting tool, by rotating the coarse adjustment component 2 and the fine adjustment component 3. Compared with existing mechanical handwheels, the coarse and fine handwheel adjustment device of this embodiment does not require the use of gears or racks to achieve transmission for adjusting the movement distance of the device. It has a simple structure and can be applied to a variety of working devices. It only requires connecting the sensors to the working device, and has strong compatibility. The diameter of the fine adjustment knob 31 is different from that of the coarse adjustment knob 21, so that the user can quickly distinguish the adjustment knobs and rotate the corresponding adjustment knob according to the actual needs.
[0032] In one embodiment, please refer to Figure 2 and Figure 3 The sensing component 1 also includes a PCB board 14 disposed on the fixed housing 11. The second sensor 13 is disposed at the center of the PCB board 14, and the first sensor 12 is disposed at a position off-center from the center of the PCB board 14. The first sensor 12 and the second sensor 13 are spaced apart from each other to avoid mutual interference. In this embodiment, both the first sensor 12 and the second sensor 13 are electrically disposed on the PCB board 14. The PCB board 14 can be connected to the working equipment, so that the first sensor 12 and the second sensor 13 can be connected to the working equipment through the PCB board 14, which is beneficial to improve the compatibility of use and can also improve the efficiency of disassembly and assembly of the coarse and fine handwheel adjustment device on the working equipment.
[0033] In one embodiment, please refer to Figure 4The first sensor 12 is a reflective incremental photoelectric encoder, and the first sensing element 22 is a reflective grating code disk. The reflective grating code disk has multiple light holes 221 along its periphery, and when rotated, these holes 221 are driven to pass through the light emitted by the reflective incremental photoelectric encoder one by one. In this embodiment, the reflective incremental photoelectric encoder emits infrared light to illuminate the reflective grating code disk. When the reflective grating code disk rotates, the multiple light holes on its periphery are spaced apart and evenly arranged circumferentially, with adjacent light holes having the same included angle. When the coarse adjustment knob 21 is rotated, it drives the reflective grating code disk to rotate synchronously. During rotation, the reflective grating code disk drives the multiple light holes 221 to pass through the infrared light emitted by the reflective incremental photoelectric encoder in sequence. The portions between adjacent light holes 221 can block and reflect the infrared light. Through the penetration and reflection of the infrared light, the rotation angle of the reflective grating code disk can be determined, thereby determining the rotation angle of the coarse adjustment knob 21.
[0034] In one embodiment, please refer to Figure 2 The second sensor 13 is an electromagnetic encoder, and the second sensing element 32 is a magnet. The center of the magnet and the center of the electromagnetic encoder are both located on the rotation axis of the fine adjustment knob 31. In this embodiment, the rotation detection principle of the fine adjustment knob 31 uses an electromagnetic encoder to detect the rotation of the magnet. The magnet is radially magnetized. When the fine adjustment knob 31 drives the magnet to rotate, the magnetic pole direction of the magnet changes. The magnet senses the electromagnetic encoder, and the electromagnetic encoder 5 outputs angle data. The PCB board 14 detects the rotation angle, direction, and speed, and outputs control command data.
[0035] Both photoelectric encoders and electromagnetic encoders can generate high-precision, stepless, smooth rotation control signals. Photoelectric encoders utilize photoelectric sensors and a grating code disk; the rotation of the grating code disk generates the on / off state of light signals to output the rotation signal. The resolution per turn depends primarily on the number of lines on the grating on the code disk, resulting in significantly higher accuracy compared to traditional rotary encoders.
[0036] Electromagnetic encoders utilize magnetic induction chips to detect the deflection of magnetic poles, thus achieving rotation detection. Compared to photoelectric encoders, electromagnetic encoders have higher single-turn resolution, which is why this application includes fine adjustment using electromagnetic encoders and coarse adjustment using photoelectric encoders.
[0037] Combining the advantages of photoelectric encoders and electromagnetic encoders, electronic dual-axis coaxial rotation detection can be achieved, satisfying the high-precision coaxial coarse and fine two-level adjustment function, while solving the drawbacks of traditional mechanical adjustment handwheels.
[0038] In one embodiment, please refer to Figure 5The fixed housing 11 includes a bottom housing 111, a connector 112, and a limiting member 113. The two ends of the connector 112 connect the bottom housing 111 and the limiting member 113. A coarse adjustment knob 21 is fitted onto the connector 112, and the limiting member 113 drives the coarse adjustment knob 21 to rotate and abut against the bottom housing 111. In this embodiment, the inner wall of the bottom housing 111 has multiple protrusions 114 along its circumference. A screw passes through the protrusions 114 and is threaded to one end of the connector 112, connecting the connector 112 to the bottom housing 111. Another screw passes through the limiting member 113 and is threaded to the connector 112, connecting the connector 112 to the limiting member 113. The outer wall of the bottom housing 111 has a rotating groove 115 along its circumference. The coarse adjustment knob 21 is rotatably positioned in the rotating groove 115 to facilitate rotation relative to the fixed housing 11. The coarse adjustment knob 21 is hollow inside and is penetrated by the connector 112. The limiting member 113 presses against the coarse adjustment knob 21 and cooperates with the bottom shell 111 to clamp the coarse adjustment knob 21, so as to limit the coarse adjustment knob 21 without affecting its rotation.
[0039] In one embodiment, please refer to Figure 5 The coarse adjustment knob 21 includes an adjustment body 211 and an inner edge 212. The inner edge 212 is located on the inner wall of the adjustment body 211. A first sensing element 22 is located on the side of the inner edge 212 facing the bottom shell 111. The coarse adjustment assembly 2 also includes a first corrugated washer 23. A limiting member 113 abuts against the side of the inner edge 212 opposite to the first sensing element 22 via the first corrugated washer 23. In this embodiment, the limiting member 113 presses against the inner edge 212 of the coarse adjustment knob 21 via the first corrugated washer 23, so that the coarse adjustment knob 21 can be stably pressed. The coarse adjustment knob 21 has a damping feel when rotated, providing a good user experience.
[0040] In one embodiment, please refer to Figure 6 The fixed housing 11 also includes a bearing 116, the outer ring of which is fixedly connected to the connector 112. The fine adjustment assembly 3 also includes a rotating shaft 33, with a fine adjustment knob 31 and a second sensor 32 connected to both ends of the rotating shaft 33. The rotating shaft 33 passes through and is connected to the inner ring of the bearing 116. In this embodiment, a receiving groove is provided at the end of the rotating shaft 33 near the second sensor 13, and the receiving groove is provided with the second sensor 32. This not only avoids the second sensor 32 occupying extra space, but also allows the rotating shaft 33 to drive the second sensor 32 to rotate synchronously when rotating, and to generate a sense with the second sensor 13. The fine adjustment knob 31 is connected to the rotating shaft 33 and can drive the rotating shaft 33 to rotate synchronously when rotating, thereby driving the second sensor 32 at the end of the rotating shaft 33 to rotate and generate a sense with the second sensor 13.
[0041] In one embodiment, please refer to Figure 6The fine adjustment assembly 3 also includes a mounting screw 34, which passes through the fine adjustment knob 31 and is threaded to the end of the rotating shaft 33 away from the second sensor 32. In this embodiment, the fine adjustment knob 31 and the rotating shaft 33 are detachably connected by the mounting screw 34 for easy assembly and disassembly. The rotation axes of the fine adjustment knob 31 and the rotating shaft 33 are collinear, so that rotating the fine adjustment knob 31 can drive the rotating shaft 33 and the second sensor 32 to rotate synchronously.
[0042] In one embodiment, please refer to Figure 2 The fine adjustment component 3 also includes a second corrugated washer 35 and a limiting nut 36. The second corrugated washer 35 is sleeved on the rotating shaft 33, and the limiting nut 36 is threaded to the outer wall of the rotating shaft 33 and drives the second corrugated washer 35 to abut against the connecting member 112. In this embodiment, the rotating shaft 33 is engaged with the bearing 116 to prevent the rotating shaft 33 from disengaging from the bearing 116. The rotating shaft 33 has an external thread and is threaded to the limiting nut 36 through the external thread. The limiting nut 36 presses against the second corrugated washer 35, and the second corrugated washer 35 abuts against the connecting member 112. It can be understood that the limiting nut 36 cooperates with the bearing 116 to axially lock the rotating shaft 33 to prevent the rotating shaft 33 from disengaging from the bearing 116, while not affecting the rotation of the rotating shaft 33.
[0043] In one embodiment, please refer to Figure 2 The fine adjustment knob 31 has a covering flange 311 at one end near the coarse adjustment knob 21. The covering flange 311 extends obliquely toward the inner wall of the coarse adjustment knob 21 and is close to the inner wall of the coarse adjustment knob 21. In this embodiment, the covering flange 311 is roughly funnel-shaped, and the gap between it and the coarse adjustment knob 21 is small, which can prevent large dust particles from entering the device and play a dustproof role.
[0044] To better understand this utility model, the following is combined with... Figures 1 to 6 The technical solution of this utility model is described in detail below:
[0045] The coarse / fine handwheel adjustment device provided by this utility model has a coarse adjustment knob 21 that, when rotated, drives the first sensing element 22 to rotate, so that the first sensing element 22 senses the first sensor 12. The first sensor 12 generates a sensing signal that reflects the angle of rotation of the coarse adjustment knob 21. Similarly, the fine adjustment knob 31, when rotated, drives the second sensing element 32 to rotate, so that the second sensing element 32 senses the second sensor 13. The second sensor 13 generates a sensing signal that reflects the angle of rotation of the fine adjustment knob 31. By connecting the first sensor 12 and the second sensor 13 to the working equipment, certain functional states of the working equipment can be finely adjusted by rotating the coarse adjustment knob 21 and the fine adjustment knob 31. The coarse / fine handwheel adjustment device of this utility model does not require the use of gears or racks to achieve transmission for adjusting the movement distance of the equipment, and has a simple structure.
[0046] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.
Claims
1. A coarse / fine handwheel adjustment device, characterized in that, include: The sensing component includes a fixed housing and a first sensor and a second sensor disposed on the fixed housing, wherein the single-turn resolution of the second sensor is higher than that of the first sensor. The coarse adjustment assembly includes a coarse adjustment knob and a first sensing element connected to each other. The coarse adjustment knob is rotatably mounted on the fixed housing and can drive the first sensing element to sense the first sensor when rotated. and The fine adjustment assembly includes a fine adjustment knob and a second sensor connected to each other. The fine adjustment knob is rotatably mounted on the fixed housing and is arranged on the same rotation axis as the coarse adjustment knob. The diameter of the fine adjustment knob is smaller than the diameter of the coarse adjustment knob. The fine adjustment knob can drive the second sensor to sense the second sensor when rotated.
2. The coarse / fine handwheel adjustment device according to claim 1, characterized in that, The first sensor is a reflective incremental photoelectric encoder, and the first sensing element is a reflective grating code disk. The reflective grating code disk has multiple light holes along its periphery, and can drive the multiple light holes to pass through the light emitted by the reflective incremental photoelectric encoder one by one when rotating.
3. The coarse / fine handwheel adjustment device according to claim 1, characterized in that, The sensing component also includes a PCB board disposed on the fixed housing, the second sensor being disposed at the center of the PCB board, and the first sensor being disposed at a position off-center from the center of the PCB board.
4. The coarse / fine handwheel adjustment device according to claim 3, characterized in that, The second sensor is an electromagnetic encoder, and the second sensing element is a magnet. The center of the magnet and the center of the electromagnetic encoder are both located on the rotation axis of the fine adjustment knob.
5. The coarse / fine handwheel adjustment device according to claim 1, characterized in that, The fixed shell includes a bottom shell, a connector, and a limiting member. The two ends of the connector connect the bottom shell and the limiting member. The coarse adjustment knob is sleeved on the connector. The limiting member drives the coarse adjustment knob to rotate and abut against the bottom shell.
6. The coarse / fine handwheel adjustment device according to claim 5, characterized in that, The coarse adjustment knob includes an adjustment body and an inner edge. The inner edge is located on the inner wall of the adjustment body. The first sensing element is located on the side of the inner edge facing the bottom shell. The coarse adjustment assembly also includes a first corrugated pad. The limiting member abuts against the side of the inner edge facing away from the first sensing element through the first corrugated pad.
7. The coarse / fine handwheel adjustment device according to claim 5, characterized in that, The fixed housing also includes a bearing, the outer ring of which is connected to the connector. The fine adjustment assembly also includes a rotating shaft, the two ends of which are connected to the fine adjustment knob and the second sensing element. The rotating shaft passes through and is connected to the inner ring of the bearing.
8. The coarse / fine handwheel adjustment device according to claim 7, characterized in that, The fine adjustment assembly also includes a mounting screw that passes through the fine adjustment knob and is threaded to the end of the shaft away from the second sensor.
9. The coarse / fine handwheel adjustment device according to claim 7, characterized in that, The fine adjustment assembly also includes a second corrugated washer and a limiting nut. The second corrugated washer is sleeved on the rotating shaft, and the limiting nut is threaded to the outer wall of the rotating shaft and drives the second corrugated washer to abut against the connector.
10. The coarse / fine handwheel adjustment device according to claim 1, characterized in that, The fine adjustment knob has a covering flange at one end near the coarse adjustment knob. The covering flange extends obliquely toward the inner wall of the coarse adjustment knob and is close to the inner wall of the coarse adjustment knob.