Tool setting gauge for worm grinding machine

Abstract

The tool setting gauge for the worm grinding machine comprises a shell, a rotating shaft is rotationally arranged in the shell, one end of the rotating shaft penetrates through the shell and is provided with a hand wheel, two sets of first bevel gears are arranged on the outer wall of the rotating shaft and located in the shell, and the first bevel gears are arranged in a bilateral symmetry mode. Lead screws are rotationally arranged on the inner wall of the shell and located on the two sides, second bevel gears are arranged at the other ends of the lead screws, the first bevel gears and the second bevel gears are installed in a meshed mode, and a lifting plate is arranged in the shell in a sliding mode, so that a user can rotate a hand wheel to enable a rotating shaft to drive the first bevel gears to rotate; and at the moment, a first bevel gear drives a lead screw to rotate through a second bevel gear, so that the height of a lifting plate is adjusted, then the height of a grinding wheel is adjusted, and the application range of the device is widened.

Description

Technical Field

[0001] This utility model relates to the field of CNC grinding machine technology, and more specifically, to a tool setting device for worm grinding machines. Background Technology

[0002] A grinding machine is a machine tool that uses abrasive tools to grind the surface of a workpiece. Most grinding machines use high-speed rotating grinding wheels for grinding, while a few use other abrasive tools and free abrasives such as oilstones, belt abrasives, honing machines, ultra-precision machining tools, belt grinders, grinding machines, and polishing machines. Grinding machines can process materials with high hardness, such as hardened steel and cemented carbide; they can also process brittle materials, such as glass and granite. A worm is a gear with one or more helical teeth that mesh with a worm wheel to form an interlocking gear pair. After the worm is finished, it needs to be precision-machined using a worm grinding machine to finish the helical teeth. Before machining the worm, a tool setting operation needs to be performed inside the worm grinding machine to bring the worm into contact with the grinding wheel.

[0003] However, existing tool setters cannot adjust the height of the grinding wheel and can only be installed on the lifting arm of the machine tool. This method is not only more complicated in terms of installation structure and prone to damage, but also more troublesome to operate and has a limited range of applications.

[0004] Furthermore, the tool setter lacks a locking mechanism, which makes it prone to movement when the grinding wheel is finishing the worm gear, resulting in inaccurate positioning of the grinding wheel and affecting grinding accuracy. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a tool setting device for worm gear grinders, thereby solving the technical problem mentioned in the background art that existing tool setting devices cannot adjust the height of the grinding wheel and can only be installed on the lifting arm of the machine tool, which is a relatively complex installation structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tool setting device for a worm gear grinder, comprising a housing, a rotating shaft rotatably disposed inside the housing, one end of the rotating shaft passing through the housing and having a handwheel thereon, a first bevel gear disposed on the outer wall of the rotating shaft and inside the housing, the first bevel gear being provided in two sets and arranged symmetrically from left to right, a lead screw rotatably disposed on the inner wall of the housing on both sides, the other end of each lead screw having a second bevel gear, the first bevel gear and the second bevel gear being meshed together, a lifting plate slidably disposed inside the housing, the lifting plate being threadedly connected to the lead screw, a guide block disposed on the lower end face of the lifting plate at the middle position, a guide hole opened on the lower end face of the housing, the guide block being slidably disposed with the guide hole, a base disposed at the lower end of the guide block, a first motor disposed inside the base, a grinding wheel disposed at the output end of the first motor, and a locking mechanism disposed on one side of the housing.

[0007] The present invention is further configured such that the locking mechanism includes an annular ring, one end of which is fixedly connected to the housing and located outside the rotating shaft. The annular ring has avoidance grooves on its outer wall and on both its upper and lower sides. A connecting rod is movably provided at the bottom of each avoidance groove. A clamping block is provided at the lower end of each connecting rod. The inner wall of each clamping block abuts against the outer wall of the rotating shaft. An inclined block is provided at the upper end of each connecting rod. A connecting spring is provided on both the inclined block and the inner wall of the avoidance groove to facilitate clamping and fixing the rotating shaft.

[0008] The present invention is further configured such that an adjusting nut is provided on the outer wall of the annular ring, the adjusting nut is threadedly installed on the outer wall of the annular ring, and the inner wall of the adjusting nut abuts against the outer wall of the inclined block, so as to facilitate the adjustment of the position of the clamping block and to facilitate the adjustment and fixation of the rotating shaft.

[0009] The present invention is further configured such that an external frame is provided at the upper end of the housing, a second motor is provided on one side of the external frame, a lead screw is provided at the output end of the second motor, the other end of the lead screw is rotatably installed with the inner wall of the external frame, a movable block is provided on the upper end face of the housing, and the lead screw is threadedly connected to the movable block, which facilitates the adjustment of the position of the housing and the grinding wheel.

[0010] The present invention is further configured such that sliders are provided on the upper end surface of the housing and on both sides of the movable block, and corresponding sliding rods are provided on the inner wall of the outer frame. The sliders and sliding rods are slidably installed to facilitate the guidance of the housing and make its movement more stable.

[0011] The present invention is further provided with a scale on the outer wall of the guide block to facilitate the viewing of the extension length of the grinding wheel.

[0012] The present invention is further configured such that positioning blocks are fixedly provided on both sides of the lifting plate, and positioning holes are correspondingly provided on the outer wall of the housing. The positioning blocks are slidably installed with the positioning holes to facilitate guiding the lifting plate.

[0013] The present invention is further provided with anti-slip texture on the inner wall of the clamping block, which facilitates increasing the friction between the clamping block and the rotating shaft.

[0014] Compared with the prior art, this utility model provides a tool setting device for worm gear grinding machines, which has the following beneficial effects:

[0015] By incorporating a lead screw, a lifting plate, and a guide block, the user can rotate the handwheel to drive the first bevel gear to rotate. The first bevel gear then drives the lead screw to rotate via the second bevel gear, thereby adjusting the height of the lifting plate and consequently the height of the grinding wheel, thus increasing the applicability and flexibility of the device.

[0016] By setting up an annular ring, a tilting block, and an adjusting nut, the user can adjust its position on the annular ring by rotating the adjusting nut so that its inner wall abuts against the outer wall of the tilting block. At this time, the connecting spring will be compressed, causing the connecting rod and the clamping block to move inside the annular ring, thereby causing the inner wall of the clamping block to abut against the outer wall of the rotating shaft, thus fixing the rotating shaft and preventing the grinding wheel from shifting during operation, which would affect the machining accuracy.

[0017] By setting up an external frame, a second motor, and a moving block, the user can control the second motor to rotate the lead screw. At this time, the lead screw will drive the moving block and the housing to adjust their positions, so as to flexibly adjust the installation position of the grinding wheel and facilitate subsequent tool setting operations. Attached Figure Description

[0018] Figure 1 This is an overall schematic diagram of the tool setter used on a worm gear grinder in its unused state.

[0019] Figure 2 A schematic diagram showing the installation of components inside the casing;

[0020] Figure 3 An exploded view showing the installation of the annular ring, connecting rod, clamping block, tilting block, and adjusting nut on the housing;

[0021] Figure 4 This is a schematic diagram showing the installation positions of the second motor, lead screw, moving block, and slide bar on the external frame;

[0022] Figure 5 This is a schematic diagram showing the positions of the clamping block, tilting block, and connecting spring on the connecting rod.

[0023] In the diagram: 1. Housing; 2. Rotating shaft; 3. Handwheel; 4. First bevel gear; 5. Lead screw; 6. Second bevel gear; 7. Lifting plate; 8. Guide block; 9. Guide hole; 10. First motor; 11. Grinding wheel; 12. Ring; 13. Avoidance groove; 14. Connecting rod; 15. Clamping block; 16. Inclined block; 17. Connecting spring; 18. External frame; 19. Second motor; 20. Lead screw; 21. Moving block; 22. Sliding block; 23. Sliding rod; 24. Scale; 25. Positioning block; 26. Positioning hole. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0027] Please see Figures 1-5 A tool setting device for a worm gear grinder includes a housing 1. A rotating shaft 2 is rotatably mounted inside the housing 1. One end of the rotating shaft 2 passes through the housing 1 and is equipped with a handwheel 3. A first bevel gear 4 is mounted on the outer wall of the rotating shaft 2, located inside the housing 1. Two sets of the first bevel gear 4 are arranged symmetrically on the left and right sides. A lead screw 5 is rotatably mounted on the inner wall of the housing 1, located on both sides. A second bevel gear 6 is mounted at the other end of each lead screw 5. The first bevel gear 4 and the second bevel gear 6 are meshed together. A lifting plate 7 is slidably mounted inside the housing 1. The lifting plate 7 is threadedly connected to the lead screw 5. A guide block 8 is located at the lower end of the lifting plate 7, located in the middle. A guide hole 9 is opened on the lower end of the housing 1. The guide block 8 is slidably mounted to the guide hole 9. A base is mounted at the lower end of the guide block 8. A first motor 10 is mounted inside the base. A grinding wheel 11 is mounted at the output end of the first motor 10. A locking mechanism is mounted on one side of the housing 1. A scale 24 is mounted on the outer wall of the guide block 8.

[0028] In this embodiment, the locking mechanism includes an annular ring 12. One end of the annular ring 12 is fixedly connected to the housing 1 and is located outside the rotating shaft 2. The outer wall of the annular ring 12 is provided with a relief groove 13 on both the upper and lower sides. The bottom of the relief groove 13 is provided with a connecting rod 14. The lower end of the connecting rod 14 is provided with a clamping block 15. The inner wall of the clamping block 15 abuts against the outer wall of the rotating shaft 2. The upper end of the connecting rod 14 is provided with an inclined block 16. The inclined block 16 and the inner wall of the relief groove 13 are provided with a connecting spring 17. The outer wall of the annular ring 12 is provided with an adjusting nut. The adjusting nut is threaded onto the outer wall of the annular ring 12. The inner wall of the adjusting nut abuts against the outer wall of the inclined block 16. The inner wall of the clamping block 15 is provided with anti-slip texture.

[0029] More specifically, the user can rotate the handwheel 3 to drive the first bevel gear 4 to rotate the rotating shaft 2. At this time, the first bevel gear 4 will drive the lead screw 5 to rotate through the second bevel gear 6, thereby adjusting the height of the lifting plate 7 and the height of the grinding wheel 11, which facilitates subsequent tool setting operations. After adjustment, the position of the wheel on the annular ring 12 can be adjusted by rotating the adjusting nut so that its inner wall abuts against the outer wall of the inclined block 16. At this time, the connecting spring 17 will be compressed, so that the connecting rod 14 and the clamping block 15 move inside the annular ring 12, thereby making the inner wall of the clamping block 15 abut against the outer wall of the rotating shaft 2 to fix the rotating shaft 2 and prevent the grinding wheel 11 from shifting during operation, which would affect the machining accuracy.

[0030] Please see Figure 1 and Figure 4 As an embodiment for adjusting the position of the housing 1 and the grinding wheel 11 at its lower end: the upper end of the housing 1 is provided with an external frame 18, one side of the external frame 18 is provided with a second motor 19, the output end of the second motor 19 is provided with a lead screw 20, the other end of the lead screw 20 is rotatably installed with the inner wall of the external frame 18, the upper end face of the housing 1 is provided with a moving block 21, the lead screw 20 is threadedly connected to the moving block 21, the upper end face of the housing 1 and the two sides of the moving block 21 are provided with sliders 22, and the inner wall of the external frame 18 is correspondingly provided with a sliding rod 23, the slider 22 and the sliding rod 23 are slidably installed.

[0031] Specifically, the user can control the second motor 19 to rotate the lead screw 20. At this time, the lead screw 20 will drive the moving block 21 and the housing 1 to adjust their positions, so as to flexibly adjust the installation position of the grinding wheel 11 and facilitate subsequent tool setting operations.

[0032] Please refer to Figure 1 and Figure 2 As a further embodiment for guiding the lifting plate 7: positioning blocks 25 are fixedly provided on both sides of the lifting plate 7, and positioning holes 26 are correspondingly provided on the outer wall of the housing 1, and the positioning blocks 25 and the positioning holes 26 are slidably installed.

[0033] Specifically, the lifting plate 7 can be guided to make the grinding wheel 11 move more smoothly.

[0034] In summary, when using the entire device: the user can rotate the handwheel 3 to drive the rotating shaft 2 to rotate the first bevel gear 4. At this time, the first bevel gear 4 will drive the lead screw 5 to rotate through the second bevel gear 6, thereby adjusting the height of the lifting plate 7 and thus the height of the grinding wheel 11. After adjustment, the user can rotate the adjusting nut to adjust its position on the annular ring 12 so that its inner wall abuts against the outer wall of the inclined block 16. At this time, the connecting spring 17 will be compressed, so that the connecting rod 14 and the clamping block 15 can move inside the annular ring 12. This causes the inner wall of the clamping block 15 to abut against the outer wall of the rotating shaft 2, thereby fixing the rotating shaft 2 and preventing the grinding wheel 11 from shifting during operation, which would affect the machining accuracy. The user can also control the second motor 19 to rotate the lead screw 20. At this time, the lead screw 20 will drive the moving block 21 and the housing 1 to adjust their positions, so as to flexibly adjust the installation position of the grinding wheel 11, which is convenient for subsequent tool setting operations. When the second motor 19 stops rotating, it is in a self-locking state, and the lead screw 20 will not rotate, which is convenient for use.

[0035] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0036] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tool setter for a worm gear grinder, comprising a housing (1), characterized in that: The housing (1) is equipped with a rotating shaft (2) inside. One end of the rotating shaft (2) passes through the housing (1) and is equipped with a handwheel (3). A first bevel gear (4) is provided on the outer wall of the rotating shaft (2) inside the housing (1). Two sets of the first bevel gear (4) are arranged symmetrically on the left and right. A lead screw (5) is provided on both sides of the inner wall of the housing (1). A second bevel gear (6) is provided at the other end of each lead screw (5). The first bevel gear (4) and the second bevel gear (6) are meshed together. A lifting plate (7) is slidably provided inside the housing (1). The lifting plate (7) is threadedly connected to the lead screw (5). A guide block (8) is provided on the lower end face of the lifting plate (7) and located in the middle position. A guide hole (9) is provided on the lower end face of the housing (1). The guide block (8) is slidably installed with the guide hole (9). A base is provided at the lower end of the guide block (8). A first motor (10) is provided inside the base. A grinding wheel (11) is provided at the output end of the first motor (10). A locking mechanism is provided on one side of the housing (1).

2. The tool setter for a worm gear grinder according to claim 1, characterized in that: The locking mechanism includes an annular ring (12), one end of which is fixedly connected to the housing (1) and located outside the rotating shaft (2). The outer wall of the annular ring (12) is provided with a dodging groove (13) on both the upper and lower sides. The bottom of the dodging groove (13) is provided with a connecting rod (14). The lower end of the connecting rod (14) is provided with a clamping block (15). The inner wall of the clamping block (15) abuts against the outer wall of the rotating shaft (2). The upper end of the connecting rod (14) is provided with an inclined block (16). The inclined block (16) and the inner wall of the dodging groove (13) are provided with a connecting spring (17).

3. The tool setter for a worm gear grinder according to claim 2, characterized in that: An adjusting nut is provided on the outer wall of the annular ring (12). The adjusting nut is threaded onto the outer wall of the annular ring (12), and the inner wall of the adjusting nut abuts against the outer wall of the inclined block (16).

4. The tool setter for a worm gear grinder according to claim 1, characterized in that: The upper end of the housing (1) is provided with an external frame (18), and a second motor (19) is provided on one side of the external frame (18). The output end of the second motor (19) is provided with a lead screw (20). The other end of the lead screw (20) is rotatably installed with the inner wall of the external frame (18). The upper surface of the housing (1) is provided with a moving block (21), and the lead screw (20) is threadedly connected to the moving block (21).

5. The tool setter for a worm gear grinder according to claim 4, characterized in that: The upper end face of the housing (1) and the two sides of the moving block (21) are provided with sliders (22), and the inner wall of the outer frame (18) is provided with corresponding sliding rods (23). The sliders (22) and sliding rods (23) are slidably installed.

6. The tool setter for a worm gear grinder according to claim 1, characterized in that: A scale (24) is provided on the outer wall of the guide block (8).

7. The tool setter for a worm gear grinder according to claim 1, characterized in that: The lifting plate (7) is fixedly provided with positioning blocks (25) on both sides, and the outer wall of the housing (1) is provided with positioning holes (26) respectively. The positioning blocks (25) and the positioning holes (26) are slidably installed.

8. The tool setter for a worm gear grinder according to claim 2, characterized in that: The inner wall of the clamping block (15) is provided with anti-slip texture.

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