A tool setting and calibration device for a drill bit grinder

Abstract

The utility model discloses a kind of tool setting and calibration devices for drill needle grinding machine, including box, rack, several guide gears, driven gear, limit ring and spring, the side of box is provided with through-hole, rack penetrates through through-hole, several guide gears are divided into upper group and lower group, respectively meshing connection in the both sides of rack, the middle part of rack is connected with limit ring, spring promotes rack movement towards through-hole, until limit ring and through-hole abut, the center shaft is provided on the box, driven gear is rotatably connected on the center shaft, the rack is meshing connection with driven gear, the side of driven gear is fixedly connected with progressive platform, the distance from the side of progressive platform to driven gear gradually increases;The measuring end of micrometer and the side of progressive platform abut. Linear motion of rack is related to progressive platform rotation angle, and motion amplitude is accurately displayed on micrometer. Each component is closely matched, and the condition of tool can be more accurately detected.

Description

Technical Field

[0001] This utility model relates to a tool setting and calibration device for a drill bit grinding machine, and more particularly to its lifting platform, belonging to the field of tool setting and calibration technology. Background Technology

[0002] Drill bits, as key tools in precision machining, are widely used in drilling products such as printed circuit boards and semiconductor devices. Their cutting edge accuracy directly affects the dimensional tolerances and surface quality of the machined holes. Drill bit grinding machines are the core equipment for forming and repairing drill bit cutting edges, and tool setting and calibration are crucial steps in the grinding process. Eliminating deviations directly determines the geometric accuracy and machining consistency of the drill bit after grinding. Currently, tool setting is mainly used to compare and inspect the cutting tools. For example, Chinese patent CN220971683U discloses a tool setting device, but its transmission mechanism has a complex structure, and the cumulative clearance between various components is large, leading to large measurement errors and failing to accurately detect the condition of the cutting tools. Therefore, how to improve the accuracy of tool setting devices is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a tool setting and calibration device for a drill bit grinding machine, thereby improving accuracy.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a tool setting and calibration device for a drill bit grinding machine, comprising a housing, a rack, several guide gears, a driven gear, a limiting ring, and a spring. A through hole is provided on the side of the housing, through which the rack passes. The guide gears are divided into upper and lower groups, respectively meshing and connected to both sides of the rack. A limiting ring is connected to the middle of the rack, the diameter of which is larger than the diameter of the through hole. One end of the rack is elastically connected to the inner wall of the housing via a spring. The spring pushes the rack toward the through hole until the limiting ring abuts against the through hole. A central shaft is provided on the housing, and a driven gear is rotatably connected to the central shaft. The rack meshes with the driven gear. A lifting platform is fixedly connected to the side of the driven gear, the distance from the side of the lifting platform to the driven gear gradually increasing. A dial indicator is inserted into the housing, and the measuring end of the dial indicator abuts against the side of the lifting platform.

[0005] The present invention is further configured such that: an elongated groove is provided on the side of the housing, the elongated groove being parallel to the radial direction of the driven gear; the dial indicator passes through the elongated groove.

[0006] A further feature of this invention is that the dial indicator can be installed at any position in the elongated groove.

[0007] The present invention is further configured such that: a mounting rod is provided at the end of the rack and on the inner wall of the corresponding housing, and the two ends of the spring are fixedly connected to a pair of mounting rods.

[0008] The present invention is further configured such that: a plurality of bearing frames are provided on the outer side of the housing, each bearing frame including a handwheel, a pair of horizontal plates, a pair of vertical plates, a nut, a lead screw, a movable bearing seat, and a fixed bearing seat; the pair of horizontal plates are fixedly connected to the two ends of the pair of vertical plates, forming a rectangular structure; a nut is provided at the center of the horizontal plates; a sliding groove is provided on the inner side of the vertical plates; the fixed bearing seat is fixedly connected to the lower section of the vertical plates; and the movable bearing seat is slidably connected in the sliding groove; an adjustment groove is provided on the side of the housing; the shaft of the upper guide gear passes through the adjustment groove and is connected to the movable bearing seat; the shaft of the lower guide gear passes through the adjustment groove and is connected to the fixed bearing seat; the lead screw is screwed into the nut, one end of which is rotatably connected to the movable bearing seat, and the other end is fixedly connected to the handwheel.

[0009] The present invention is further configured such that: a meter holder is connected to the outer side of the housing, and the meter holder is connected to the dial indicator.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This patent application is an improvement on CN220971683U. After the end of the rack located on the outside of the housing contacts the cutter, the cutter pushes the rack to move on the guide gear. At the same time, it drives the driven gear and the lifting platform to rotate. As the distance from the side of the lifting platform to the driven gear gradually increases, the measuring end of the dial indicator abuts against the side of the lifting platform. The linear motion of the rack is related to the rotation angle of the lifting platform, and the motion amplitude is accurately displayed on the dial indicator. The rack and driven gear are meshed, the driven gear and the lifting platform are concentrically fixed, and the dial indicator is in direct contact with the lifting platform. The close cooperation between the various components results in smaller measurement errors and more accurate detection of the cutter's condition. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a tool setting and calibration device for a drill bit grinding machine, according to a preferred embodiment of the present invention.

[0012] Figure 2 This is a schematic diagram of the bearing bracket structure;

[0013] Figure 3 A schematic diagram of the micrometer, the elongated groove, and the meter holder;

[0014] Figure 4 This is a schematic diagram of the driven gear and the lifting platform.

[0015] Figure 5 This is a schematic diagram of the driven gear and the lifting platform according to another embodiment.

[0016] In the diagram: 1. Housing; 2. Rack; 3. Through hole; 4. Limiting ring; 5. Guide gear; 6. Mounting rod; 7. Spring; 8. Driven gear; 9. Lifting platform; 10. Dial indicator; 11. Central shaft; 12. Handwheel; 13. Horizontal plate; 14. Vertical plate; 15. Slide groove; 16. Movable bearing seat; 17. Fixed bearing seat; 18. Long oval groove; 19. Indicator holder; 20. Nut; 21. Adjusting groove; 22. Lead screw. Detailed Implementation

[0017] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0018] Example 1: See Appendix Figure 1-4 As shown, a tool setting and calibration device for a drill bit grinding machine in this embodiment includes a housing 1, a rack 2, several guide gears 5, a driven gear 8, a limiting ring 4, and a spring 7. A through hole 3 is provided on the side of the housing 1, through which the rack 2 passes. The guide gears 5 are divided into upper and lower groups, respectively meshing and connected to both sides of the rack 2. A limiting ring 4 is connected to the middle of the rack 2, the diameter of which is larger than the diameter of the through hole 3. One end of the rack 2 is connected to the housing 1 via the spring 7. The inner wall is elastically connected, and the spring 7 pushes the rack 2 towards the through hole 3 until the limiting ring 4 abuts against the through hole 3. A central shaft 11 is provided on the housing 1, and a driven gear 8 is rotatably connected to the central shaft 11. The rack 2 is meshed with the driven gear 8. A lifting platform 9 is fixedly connected to the side of the driven gear 8, and the distance from the side of the lifting platform 9 to the driven gear 8 gradually increases. A dial indicator 10 is inserted into the housing 1, and the measuring end of the dial indicator 10 abuts against the side of the lifting platform 9. A meter holder 19 is connected to the outer side of the housing 1, and the meter holder 19 is connected to the dial indicator 10.

[0019] The side of the housing 1 is provided with an elongated circular groove 18, which is radially parallel to the driven gear 8; the dial indicator 10 passes through the elongated circular groove 18. The dial indicator 10 can be installed at any position in the elongated circular groove 18. The end of the rack 2 and the corresponding inner wall of the housing 1 are provided with a set rod 6, and the two ends of the spring 7 are fixedly connected to a pair of set rods 6. The outer side of the housing 1 is provided with several bearing brackets, each bearing bracket including a handwheel 12, a pair of horizontal plates 13, a pair of vertical plates 14, a nut 20, a lead screw 22, a movable bearing seat 16, and a fixed bearing seat 17. The pair of horizontal plates 13 are fixedly connected to both ends of the pair of vertical plates 14, forming a rectangular structure. A nut 20 is located at the center of each horizontal plate 13. A sliding groove 15 is provided on the inner side of each vertical plate 14. The fixed bearing seat 17 is fixedly connected to the lower section of the vertical plate 14, and the movable bearing seat 16 is slidably connected in the sliding groove 15. An adjustment groove 21 is provided on the side of the housing 1. The shaft of the upper guide gear 5 passes through the adjustment groove 21 and is connected to the movable bearing seat 16. The shaft of the lower guide gear 5 passes through the adjustment groove 21 and is connected to the fixed bearing seat 17. The lead screw 22 is screwed into the nut 20, with one end rotatably connected to the movable bearing seat 16 and the other end fixedly connected to the handwheel 12. The existing square double bearing seat is also applicable to this patent application and can replace the bearing seat.

[0020] Example 2: See Figure 1 , 2 As shown in Figures 3 and 5, the housing 1 of the embodiment is basically the same as the rack 2 of the embodiment, except that the lifting platform 9 is divided into two halves, which are symmetrically arranged. The distance between each half and the driven gear 8 gradually increases. After the two halves are combined into a whole, there is no abrupt change in distance. The dial indicator 10 runs more smoothly on the lifting platform 9 without any jerking.

[0021] In summary, the method of using the tool setting and calibration device for a drill bit grinding machine shown in this utility model is as follows: After the end of the rack 2 located outside the housing 1 contacts the tool, the tool pushes the rack 2 to move on the guide gear 5. Simultaneously, this drives the driven gear 8 and the lifting platform 9 to rotate. As the distance from the side of the lifting platform 9 to the driven gear 8 gradually increases, the measuring end of the dial indicator 10 abuts against the side of the lifting platform 9. The linear motion of the rack 2 is related to the rotation angle of the lifting platform 9, and the amplitude of the motion is accurately displayed on the dial indicator 10. The rack 2 and the driven gear 8 are meshed together, the driven gear 8 and the lifting platform 9 are concentrically fixed together, and the dial indicator 10 is in direct contact with the lifting platform 9. The various components are closely coordinated, resulting in smaller measurement errors and more accurate detection of the tool's condition. The dial indicator stand 19 can be an existing type that can be adjusted in any direction. By adjusting the position of the dial indicator 10 in the elongated groove 18, the distance between the dial indicator 10 and the central shaft 11 is changed, altering the linear velocity and thus the measurement accuracy. A pair of sleeve rods 6 are connected to both ends of the spring 7. The spring 7 pushes the rack 2 back to its original position until the limit ring 4 abuts against the through hole 3. This maintains close contact between the rack 2 and the tool, reducing the clearance and error. The position of the fixed bearing seat 17 and the lower guide gear 5 remain fixed. By rotating the handwheel 12, the lead screw 22 is driven. Since the lead screw 22 is engaged with the nut 20 and its end is rotatably connected to the movable bearing seat 16, the lead screw 22 moves along the axis, pulling the movable bearing seat 16. The fixed bearing seat 17 is fixedly connected to the lower section of the vertical plate 14, changing the distance between the movable bearing seat 16 and the fixed bearing seat 17. This changes the distance between the upper and lower guide gears 5, clamping the rack 2 between the upper and lower guide gears 5, reducing the clearance and improving accuracy.

[0022] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A tool setting and calibration device for a drill bit grinding machine, comprising a housing (1), a rack (2), several guide gears (5), a driven gear (8), a limiting ring (4), and a spring (7), wherein a through hole (3) is provided on the side of the housing (1), the rack (2) passes through the through hole (3), the several guide gears (5) are divided into upper and lower groups, respectively meshing and connected to both sides of the rack (2), a limiting ring (4) is connected to the middle of the rack (2), the diameter of the limiting ring (4) is larger than the diameter of the through hole (3), one end of the rack (2) is elastically connected to the inner wall of the housing (1) through the spring (7), the spring (7) pushes the rack (2) toward the through hole (3) until the limiting ring (4) abuts against the through hole (3), characterized in that, A central shaft (11) is provided on the housing (1), and a driven gear (8) is rotatably connected on the central shaft (11). The rack (2) meshes with the driven gear (8). A lifting platform (9) is fixedly connected to the side of the driven gear (8). The distance from the side of the lifting platform (9) to the driven gear (8) gradually increases. A dial indicator (10) is inserted into the housing (1), and the measuring end of the dial indicator (10) abuts against the side of the lifting platform (9).

2. The tool setting and calibration device for a drill bit grinding machine according to claim 1, characterized in that, The side of the housing (1) is provided with an elongated groove (18), which is parallel to the radial direction of the driven gear (8); the dial indicator (10) passes through the elongated groove (18).

3. The tool setting and calibration device for a drill bit grinding machine according to claim 2, characterized in that, The dial indicator (10) can be installed at any position in the elongated groove (18).

4. The tool setting and calibration device for a drill bit grinding machine according to claim 3, characterized in that, The rack (2) is provided with a set rod (6) at its end and on the inner wall of the corresponding housing (1), and the two ends of the spring (7) are fixedly connected to a pair of set rods (6).

5. The tool setting and calibration device for a drill bit grinding machine according to claim 4, characterized in that, The outer side of the housing (1) is provided with several bearing frames, each bearing frame including a handwheel (12), a pair of horizontal plates (13), a pair of vertical plates (14), a nut (20), a lead screw (22), a movable bearing seat (16), and a fixed bearing seat (17). The pair of horizontal plates (13) are fixedly connected to the two ends of the pair of vertical plates (14), forming a rectangular structure. A nut (20) is provided at the center of the horizontal plate (13). A sliding groove (15) is provided on the inner side of the vertical plate (14). The fixed bearing seat (17) is fixedly connected to the vertical plate. (14) The lower section of the movable bearing seat (16) is slidably connected in the slide groove (15); the side of the housing (1) is provided with an adjustment groove (21); the shaft of the upper guide gear (5) passes through the adjustment groove (21) and is connected in the movable bearing seat (16), and the shaft of the lower guide gear (5) passes through the adjustment groove (21) and is connected in the fixed bearing seat (17); the screw (22) is screwed into the nut (20), one end of which is rotatably connected to the movable bearing seat (16), and the other end is fixedly connected to the handwheel (12).

6. The tool setting and calibration device for a drill bit grinding machine according to claim 5, characterized in that, The outer side of the housing (1) is connected to a meter holder (19), which is connected to the dial indicator (10).

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