Grinding machine jump gear mechanism

Abstract

The utility model relates to the technical field of gear skipping mechanisms, and discloses a grinding machine gear skipping mechanism which comprises a machine shell, a transverse pipe is installed on the inner side of the machine shell, a moving block driving a shifting fork to transversely move is sleeved on the outer side of the transverse pipe in a sliding mode, and a driving mechanism is installed on the top of the machine shell and drives the moving block to slide on the outer side of the transverse pipe. And a position detection assembly is arranged between the outer wall of the transverse pipe and the inner wall of the moving block, and the position detection assembly transmits signals to the driving mechanism through a wire to control the driving mechanism to stop and position the grinding guide wheel. Compared with the prior art, the grinding device has the advantages that the driving mechanism drives the moving block to slide on the outer side of the transverse pipe, abrasion is small, and it can be ensured that the shifting fork and the grinding guide wheel are driven to move stably; when the moving block moves, the position detection assembly can detect that the positioning button with the corresponding number is pressed and triggered, a motor in the driving mechanism can be immediately closed, and it is ensured that the position of the grinding guide wheel is positioned accurately.

Description

Technical Field

[0001] This utility model relates to the technical field of gear skipping mechanisms, specifically to a gear skipping mechanism for grinding machines. Background Technology

[0002] The skip-gear mechanism of CNC camshaft grinding machines typically drives the shaft to rotate via gear and rack or tooth block transmission, thereby moving the grinding guide wheel to select the grinding template during processing. However, the existing skip-gear mechanism's grinding guide wheel cannot move arbitrarily back and forth, thus limiting the skip-gear speed and resulting in low machine tool processing efficiency.

[0003] A search revealed that Chinese patent application number 201110031472.X discloses a shift control mechanism for a CNC camshaft grinding machine. This mechanism includes a servo motor controlled by the machine tool's main CNC system and a shift transmission device. The shift transmission device includes a gear shaft, with a small gear on the servo motor shaft meshing with a large gear on the gear shaft. The gear shaft is located inside the machine tool housing and meshes with a rack drive shaft. A support is fixed to the rack drive shaft, which can reciprocate within the machine tool housing. The shift fork contacts a grinding guide wheel that can move on a guide wheel shaft, and the grinding guide wheel contacts a grinding template that conforms to its shape. While this structure is simple, compact, low-cost, and easy to operate, long-term use will cause wear at the meshing point of the small and large gears. If not replaced in time, unstable meshing can easily occur, causing the shift fork to wobble and shift position, affecting the shift position of the grinding guide wheel.

[0004] To address the aforementioned technical problems, this application proposes a grinding machine shift mechanism that is accurate in positioning and can be used for extended periods. Utility Model Content

[0005] I. Technical problems to be solved

[0006] The technical problem this invention aims to solve is that wear occurs at the meshing point of the pinion and gear after long-term use. If not replaced in time, unstable meshing can easily occur, causing the shift fork to wobble and shift position to affect the shifting position of the guide wheel.

[0007] II. Technical Solution

[0008] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a grinding machine speed-jumping mechanism, including a machine housing, a guide wheel shaft, a grinding guide wheel and a shift fork, wherein the guide wheel shaft is installed inside the machine housing, the grinding guide wheel is sleeved on the outside of the guide wheel shaft, and two sets of shift forks are respectively located on both sides of the grinding guide wheel;

[0009] A horizontal tube is installed inside the housing. The horizontal tube is located above the guide wheel shaft and its axis is parallel to the axis of the guide wheel shaft. A moving block that drives the shift fork to move laterally is slidably sleeved on the outside of the horizontal tube. A drive mechanism is installed on the top of the housing. The drive mechanism drives the moving block to slide on the outside of the horizontal tube.

[0010] A position detection component is provided between the outer wall of the horizontal tube and the inner wall of the moving block. The position detection component transmits signals to the drive mechanism through wires, controls the stop of the drive mechanism, and positions the grinding guide wheel.

[0011] As an improvement, the drive mechanism includes a mounting plate, a motor, a rotating wheel, and a traction rod. The mounting plate is mounted on the top of the housing. The motor is mounted on one side of the mounting plate and its shaft end passes through the mounting plate and is connected to the shaft of the rotating wheel. One end of the traction rod is rotatably connected to the eccentric part of the rotating wheel, and the other end is rotatably connected to the upper side of the moving block. The upper side wall of the housing is equipped with a slide rail through which the traction rod passes.

[0012] As an improvement, the traction rod is installed on the side of the rotating wheel away from the mounting vertical plate, which is located on one side of the slide rail, so that the moving block is always located on one side of the rotating wheel.

[0013] As an improvement, the position detection component includes a pressure block and multiple sets of positioning buttons. The pressure block is installed in the middle of a groove on one side of the inner wall of the moving block. The multiple sets of positioning buttons are equidistantly installed on the outer wall of the horizontal tube. When the moving block moves, the groove slides over the outside of the multiple sets of positioning buttons.

[0014] As an improvement, the multiple sets of positioning buttons are numbered sequentially according to their positions.

[0015] As an improvement, a connecting plate is fixedly connected between the tops of the two sets of shift forks and the lower side of the moving block, and multiple sets of ball bearings are embedded and installed on the side of the lower part of the two sets of shift forks that are close to each other.

[0016] III. Beneficial Effects

[0017] The advantages of this utility model compared with the prior art are as follows:

[0018] 1. The moving block is driven by the drive mechanism to slide on the outside of the horizontal tube, resulting in less wear. Long-term use can ensure stable movement of the shift fork and the guide wheel.

[0019] 2. When the moving block moves, the position detection component can detect that the corresponding numbered positioning button is pressed and triggered, which can immediately shut down the motor in the drive mechanism to ensure the accurate positioning of the moving block, shift fork and grinding guide wheel. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the upper structure of the grinding machine skipping mechanism of this utility model.

[0021] Figure 2 This is a schematic diagram of the lower structure of the grinding machine skipping mechanism of this utility model.

[0022] Figure 3This is a schematic diagram of the cross-sectional structure of the housing of the grinding machine skipping mechanism of this utility model.

[0023] Figure 4 This is a schematic diagram of the shift fork structure of the grinding machine shift mechanism of this utility model.

[0024] As shown in the figure: 1. Housing; 2. Guide wheel shaft; 3. Grinding guide wheel; 4. Shift fork; 5. Horizontal tube; 6. Moving block; 7. Connecting plate; 8. Ball bearing; 9. Traction rod; 10. Mounting vertical plate; 11. Motor; 12. Rotary wheel; 13. Slide rail; 14. Groove; 15. Pressure block; 16. Positioning button. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] As attached Figure 2 and attached Figure 4 As shown, the grinding machine shift mechanism includes a housing 1, a guide wheel shaft 2, a grinding guide wheel 3, and a shift fork 4. The guide wheel shaft 2 is installed inside the housing 1, and the grinding guide wheel 3 is sleeved on the outside of the guide wheel shaft 2. Two sets of shift forks 4 are located on both sides of the grinding guide wheel 3. The shift forks 4 on both sides drive the grinding guide wheel 3 to shift gears. Multiple sets of ball bearings 8 are embedded on the lower side of the two sets of shift forks 4 that are close to each other. The multiple sets of ball bearings 8 support the grinding guide wheel 3 on both sides, which will not affect the rotation of the grinding guide wheel 3 and reduce the wear on the shift fork 4 and the grinding guide wheel 3.

[0027] A horizontal tube 5 is installed inside the housing 1. The horizontal tube 5 is located above the guide wheel shaft 2 and its axis is parallel to the axis of the guide wheel shaft 2. A moving block 6 is slidably sleeved on the outside of the horizontal tube 5 to drive the shift fork 4 to move laterally. The top of the two sets of shift forks 4 are connected by a connecting plate 7 and fixedly connected to the lower side of the moving block 6. The shift fork 4 is moved by the sliding of the moving block 6 on the outside of the horizontal tube 5.

[0028] As attached Figure 1As shown, a drive mechanism is installed on the top of the housing 1. The drive mechanism includes a mounting plate 10, a motor 11, a rotating wheel 12, and a traction rod 9. The mounting plate 10 is installed on the top of the housing 1. The motor 11 is installed on one side of the mounting plate 10, and its shaft end passes through the mounting plate 10 and is connected to the axis of the rotating wheel 12. One end of the traction rod 9 is rotatably connected to the eccentric part of the rotating wheel 12, and the other end is rotatably connected to the upper side of the moving block 6. A slide rail 13 is installed on the upper side wall of the housing 1 to allow the traction rod 9 to pass through. When the rotating wheel 12 rotates, it drives the traction rod 9 to move in the slide rail 13. The other end of the traction rod 9 drives the moving block 6 to slide outside the horizontal tube 5. The traction rod 9 is installed on the side of the rotating wheel 12 away from the mounting plate 10. The mounting plate 10 is located on one side of the slide rail 13, so that the moving block 6 is always located on one side of the rotating wheel 12. The length of the traction rod 9 is greater than the distance between the top of the rotating wheel 12 and the horizontal tube 5, ensuring that the moving block 6 can slide smoothly outside the horizontal tube 5 when the rotating wheel 12 rotates.

[0029] As attached Figure 2 and attached Figure 3 As shown, a position detection component is provided between the outer wall of the horizontal tube 5 and the inner wall of the moving block 6. The position detection component includes a pressure block 15 and multiple sets of positioning buttons 16. The pressure block 15 is installed in the middle of a groove 14 on one side of the inner wall of the moving block 6. The multiple sets of positioning buttons 16 are equidistantly installed on the outer wall of the horizontal tube 5. When the moving block 6 moves, the groove 14 slides over the outside of the multiple sets of positioning buttons 16. The positioning buttons 16 are pressed by the pressure block 15. The position detection component transmits signals to the drive mechanism through wires to control the stop of the drive mechanism and to locate the position of the grinding guide wheel 3. The multiple sets of positioning buttons 16 are numbered sequentially according to their positions. After a positioning button 16 receives a press, it sends data with a number, which the CNC processing unit can quickly identify and stop the drive mechanism.

[0030] The specific usage method is as follows:

[0031] The positions for skipping gears are numbered and correspond to the numbers of the positioning buttons 16. When the grinding machine skips gears, the position number to be skipped is input into the CNC processor, the motor 11 is started, and the motor 11 drives the rotating wheel 12 to rotate. When the rotating wheel 12 rotates, it drives one end of the traction rod 9 to move. At this time, the other end of the traction rod 9 drives the moving block 6 to slide on the outside of the horizontal tube 5. The pressure block 15 will press multiple sets of positioning buttons 16. The positioning buttons 16 will transmit signals to the CNC processor. The CNC processor will compare the signals with the input position number to be skipped. If the numbers are different, the motor 11 will continue to rotate. If the numbers are the same, the CNC processor will immediately shut down the motor 11. At this time, the shift fork 4 on the lower side of the moving block 6 drives the grinding guide wheel 3 to move to the designated skipping position to perform grinding on the grinding template.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A grinding machine shift mechanism, comprising a housing (1), a guide wheel shaft (2), a grinding guide wheel (3), and shift forks (4), wherein the guide wheel shaft (2) is installed inside the housing (1), the grinding guide wheel (3) is sleeved on the outside of the guide wheel shaft (2), and two sets of shift forks (4) are respectively located on both sides of the grinding guide wheel (3), characterized in that: A horizontal tube (5) is installed inside the housing (1). The horizontal tube (5) is located above the guide wheel shaft (2) and its axis is parallel to the axis of the guide wheel shaft (2). A moving block (6) that drives the shift fork (4) to move laterally is slidably sleeved on the outside of the horizontal tube (5). A driving mechanism is installed on the top of the housing (1). The driving mechanism drives the moving block (6) to slide on the outside of the horizontal tube (5). A position detection component is provided between the outer wall of the horizontal tube (5) and the inner wall of the moving block (6). The position detection component transmits signals to the drive mechanism through wires, controls the stop of the drive mechanism, and positions the grinding guide wheel (3).

2. The grinding machine skipping mechanism according to claim 1, characterized in that: The drive mechanism includes a mounting plate (10), a motor (11), a rotating wheel (12), and a traction rod (9). The mounting plate (10) is mounted on the top of the housing (1). The motor (11) is mounted on one side of the mounting plate (10) and its shaft end passes through the mounting plate (10) and is connected to the axis of the rotating wheel (12). One end of the traction rod (9) is rotatably connected to the eccentric part of the rotating wheel (12), and the other end is rotatably connected to the upper side of the moving block (6). The upper side wall of the housing (1) is equipped with a slide rail (13) through which the traction rod (9) passes.

3. The grinding machine skipping mechanism according to claim 2, characterized in that: The traction rod (9) is installed on the side of the rotating wheel (12) away from the mounting plate (10), which is located on the side of the slide rail (13), so that the moving block (6) is always located on the side of the rotating wheel (12).

4. The grinding machine skipping mechanism according to claim 1, characterized in that: The position detection component includes a pressure block (15) and multiple sets of positioning buttons (16). The inner wall of the moving block (6) has a groove (14) on one side. The pressure block (15) is installed in the middle of the groove (14). The multiple sets of positioning buttons (16) are equidistantly installed on the outer wall of the horizontal tube (5). When the moving block (6) moves, the groove (14) slides over the outside of the multiple sets of positioning buttons (16).

5. The grinding machine skipping mechanism according to claim 4, characterized in that: The multiple sets of positioning buttons (16) are numbered sequentially according to their positions.

6. The grinding machine skipping mechanism according to claim 1, characterized in that: The top of the two sets of shift forks (4) are connected by a connecting plate (7) and the lower side of the moving block (6). Multiple sets of ball bearings (8) are embedded and installed on the side of the lower part of the two sets of shift forks (4) that are close to each other.

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