Polishing and grinding device for hardware drill bit machining

Abstract

A polishing and grinding device for hardware drill bit machining comprises a grinding table (10), a rotating table (20) and a grinding wheel (30). The air inlet connector (12) and the air exhaust connector (13) are communicated with the two ends of the spherical hinge (40) respectively, so that air flow enters from one end of the spherical hinge (40), passes through the grinding wheels (30) and then is exhausted from the other end of the spherical hinge (40), the grinding wheels (30) are driven to rotate on the outer side of the spherical hinge (40), the concave face part of a drill bit can be arranged between the two grinding wheels (30), and under the action of the rotating grinding wheels (30), the concave face part of the drill bit can be polished. The concave surface part of the drill bit (01) is ground and polished; as the rotating table (20) can also rotate relative to the grinding table (10), grinding can be completed only by moving the drill bit (01) back and forth in the axis direction, the grinding operation is simple and convenient, the two faces of the drill bit (01) can be ground at the same time, and the grinding efficiency is relatively high.

Description

Technical Field

[0001] The invention belongs to the technical field of hardware processing, and specifically relates to a polishing and grinding device for hardware drill bit processing. Background Art

[0002] Hardware drill bits are an indispensable part of hardware tools, and are designed for drilling holes in a variety of materials such as metal, wood, and plastic. During the processing of hardware drill bits, the polishing and grinding steps can significantly reduce the roughness of the drill bit surface, improve its smoothness and flatness, thereby enhancing the cutting performance of the drill bit, extending its service life, and ensuring the accuracy and quality of drilling. Polishing and grinding can remove burrs, flash and other defects on the drill bit surface, reduce friction with the material surface, make the drilling process smoother, and also help improve the overall aesthetics of the drill bit.

[0003] The outer surface of the drill bit is generally a regular arc surface, which is relatively easy to grind, while the inner concave surface is a spiral concave arc surface, which is relatively difficult to grind. At present, it is generally ground by the grinding wheel of a grinder. Usually, only one concave surface can be ground at a time. In addition, due to the irregular inner arc surface, the operation requirements are also high, resulting in low overall efficiency in the drill bit polishing and grinding steps. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention creatively adopts a polishing and grinding device for hardware drill bit processing to partially solve the problems raised in the above background technology.

[0005] The technical solution adopted is as follows: The embodiment of the present invention proposes a polishing and grinding device for hardware drill bit processing, comprising: A grinding table, wherein the grinding table is configured as a rectangular plate and a circular groove is provided on the grinding table; A rotating table is installed in the circular groove and can rotate in the circular groove, and a mounting groove is provided on the rotating table; Two ball joints are installed in the installation groove, and a grinding wheel is rotatably installed on the outer side of each ball joint; Among them, the grinding table is fixedly provided with an air inlet interface that can be connected to an external air supply device and an air exhaust interface that can be connected to an external air exhaust device. The air inlet interface and the air exhaust interface are respectively connected to the two ends of the ball joint, so that the air flow enters from one end of the ball joint, passes through the grinding wheel and is discharged from the other end of the ball joint, and drives the grinding wheel to rotate outside the ball joint, so that the two grinding wheels can polish the concave surfaces on both sides of the drill bit at the same time.

[0006] Further, the ball joint includes a ball head and ball head shafts fixedly arranged on both sides of the ball head along the same axial direction, an air guide hole is provided inside the ball head, the ball head shaft includes a first ball head shaft connected to the air inlet interface and a second ball head shaft connected to the air extraction interface, and the air guide hole includes a first air guide hole connected to the first ball head shaft and a second air guide hole connected to the second ball head shaft; The grinding wheel includes a wheel seat and a grinding belt wrapped around the outside of the wheel seat for grinding the drill bit. The wheel seat is sleeved on the outside of the ball head, and an air guide groove is provided on the inner side of the wheel seat corresponding to the air guide hole. A plurality of guide fins are provided in the air guide groove and are centrally symmetrically distributed around an axis, so that the airflow from the first air guide hole enters the air guide groove and impacts the guide fin, and then is discharged from the second air guide hole, driving the wheel seat to rotate around the axis on the outside of the ball head.

[0007] Furthermore, conical grooves are provided at both ends of the wheel seat along the axial direction, so that the wheel seat can swing around the axis at ±15° on the outside of the ball head, and the air guide groove is configured so that when the wheel seat swings around the axis at ±15°, the first air guide hole and the second air guide hole are both connected to the air guide groove.

[0008] Furthermore, an airbag is provided between the grinding belt and the wheel seat, the grinding belt comprises a flexible grinding belt, the airbag is filled between the wheel seat and the grinding belt, and makes the surface of the grinding belt protrude outward in an arc shape.

[0009] Furthermore, the rotating table includes a table top and a slider, and two guide plates are fixedly provided at the edge of the table top corresponding to the mounting groove. Four sliders are provided and are respectively fixed at the two ends of the two ball head shafts. A movable groove is provided on the inner side of the guide plate, and the four sliders are respectively slidably installed on the inner sides of the two movable grooves, so that the spacing between the two grinding wheels can be adjusted.

[0010] Furthermore, a spring is installed between the two sliders in the same movable groove, and both ends of the spring are fixedly connected to the two sliders respectively, so that the sliders have elastic potential energy to approach each other.

[0011] Furthermore, an empty groove is provided inside the table plate, and an air duct is installed in the empty groove. The air duct includes a first air duct connected to the first ball head shaft and a second air duct connected to the second ball head shaft. The other end of the first air duct is connected to the air inlet interface, and the other end of the second air duct is connected to the air exhaust interface.

[0012] Furthermore, a first air guide groove and a second air guide groove are provided on the outer wall of the table plate, and the first air guide groove and the second air guide groove are both constructed as annular grooves and are staggered in the axial direction of the table plate. The first air guide groove and the second air guide groove are independent of each other, and an exhaust hole and an air suction hole are respectively provided on the inner wall of the circular groove corresponding to the first air guide groove and the second air guide groove, the exhaust hole is connected to the air inlet interface, and the air suction hole is connected to the air suction interface.

[0013] Furthermore, a mechanical seal is installed between the table plate and the polishing table, so that the table plate and the polishing table can rotate through the mechanical seal, and the first air guide groove and the second air guide groove are separated and independent by the mechanical seal, the first air guide groove is connected to the first ball head shaft through the first air guide pipe, and the second air guide groove is connected to the second ball head shaft through the second air guide pipe.

[0014] Furthermore, the guide plate includes two parallel distributed guide plates, and guide grooves are provided on the guide plates corresponding to the ball head shaft and the air guide tube, so that the ball head shaft and the air guide tube can slide in the guide grooves.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: 1. The present invention arranges two sets of grinding wheels on a rotatable rotating table, and the concave portion of the drill bit can be placed between the two grinding wheels. Under the action of the rotating grinding wheels, the concave portion of the drill bit is ground and polished. Since the rotating table can also rotate relative to the grinding table, the drill bit only needs to be moved back and forth along the axial direction to complete the grinding, making the grinding operation simple and convenient, and both sides of the drill bit can be ground at the same time, and the grinding efficiency is relatively high.

[0016] 2. The grinding wheel in the present invention can not only rotate on the surface of the ball joint, but also make the grinding wheel swing along with the concave surface of the drill bit by adjusting the axial angle to reduce the difficulty of manual operation. At the same time, an airbag structure is arranged on the inner side of the grinding belt to make the grinding belt adaptively change according to the curvature change of the concave surface of the drill bit, thereby achieving a better grinding effect and improving the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a polishing and grinding device for hardware drill bit processing proposed in an embodiment of the present invention; Figure 2 A three-dimensional schematic diagram of a rotating table in a polishing and grinding device for hardware drill bit processing proposed in an embodiment of the present invention; Figure 3 A schematic diagram of a half-section structure of a rotating table in a polishing and grinding device for hardware drill bit processing proposed in an embodiment of the present invention; Figure 4A schematic diagram of the internal structure of a grinding wheel in a polishing and grinding device for hardware drill bit processing proposed in an embodiment of the present invention; Figure 5 A schematic diagram of a polishing device for processing a hardware drill bit in a polishing state according to an embodiment of the present invention; Figure 6 It is a schematic diagram of the tilted state of the grinding wheel of a polishing and grinding device for hardware drill bit processing proposed in an embodiment of the present invention when grinding.

[0018] Among them, 01, drill bit; 10, grinding table, 11, bottom plate, 12, air inlet interface, 13, exhaust interface, 14, mechanical seal; 20, rotating table, 201, guide groove, 202, mounting groove, 203, first air guide groove, 204, second air guide groove, 205, empty groove, 206, movable groove, 21, table plate, 22, guide plate, 23, slider, 24, spring, 25, air guide tube; 30, grinding wheel, 31, wheel seat, 3101, conical groove, 310, air guide groove, 311, guide fin, 32, grinding belt, 33, air bag; 40, ball joint, 41, ball head, 410, air guide hole, 42, ball head shaft.

[0019] The accompanying drawings are used to provide further understanding of the embodiments and constitute a part of the specification. They are used for explanation together with the embodiments and do not constitute a limitation of the embodiments. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection.

[0021] In the description of the embodiments, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments.

[0022] like Figure 1 As shown, in an embodiment of the present invention, a polishing and grinding device for hardware drill bit processing is provided, which includes a grinding table 10, a rotating table 20 and a grinding wheel 30.

[0023] Among them, the grinding table 10 is constructed as a rectangular plate, and a base plate 11 is arranged at the bottom, so that the grinding table 10 can maintain an upright working state, and a circular groove is provided on the grinding table 10, and the rotating table 20 is installed in the circular groove and can rotate in the circular groove. The rotating table 20 is provided with a mounting groove 202, and two ball joints 40 are installed in the mounting groove 202, and a grinding wheel 30 is rotatably installed on the outer side of each ball joint 40.

[0024] Furthermore, the grinding table 10 is fixedly provided with an air inlet interface 12 that can be connected to an external air supply device and an air exhaust interface 13 that can be connected to an external air exhaust device. The air inlet interface 12 and the air exhaust interface 13 are respectively connected to the two ends of the ball joint 40, so that the air flow enters from one end of the ball joint 40, passes through the grinding wheel 30 and is discharged from the other end of the ball joint 40, and drives the grinding wheel 30 to rotate outside the ball joint 40, so that the two grinding wheels 30 can polish the concave surfaces on both sides of the drill bit 01 at the same time.

[0025] In this way, by arranging two sets of grinding wheels 30 on the rotatable rotating table 20, the concave portion of the drill bit 01 can be placed between the two grinding wheels 30. Under the action of the rotating grinding wheels 30, the concave portion of the drill bit 01 is ground and polished. Since the rotating table 20 can also rotate relative to the grinding table 10, the drill bit 01 only needs to be moved back and forth along the axial direction to complete the grinding, which makes the grinding operation simple and convenient, and both sides of the drill bit 01 can be ground at the same time, and the grinding efficiency is relatively high.

[0026] like Figure 4 As shown, the ball joint 40 includes a ball head 41 and a ball head shaft 42 fixedly arranged on both sides of the ball head 41 along the same axial direction, an air guide hole 410 is provided inside the ball head 41, the ball head shaft 42 includes a first ball head shaft connected to the air inlet interface 12 and a second ball head shaft connected to the air exhaust interface 13, and the air guide hole 410 includes a first air guide hole connected to the first ball head shaft and a second air guide hole connected to the second ball head shaft.

[0027] Furthermore, the grinding wheel 30 includes a wheel seat 31 and a grinding belt 32 wrapped around the outside of the wheel seat 31 for grinding the drill bit 01. The wheel seat 31 is sleeved on the outside of the ball head 41 to form a ball joint matching structure, and an air guide groove 310 is provided on the inner side of the wheel seat 31 corresponding to the air guide hole 410. The air guide groove 310 is provided with a plurality of guide fins 311 distributed symmetrically around the axis, so that the airflow from the first air guide hole enters the air guide groove 310 and impacts the guide fins 311, and then is discharged from the second air guide hole, driving the wheel seat 31 to rotate around the axis on the outside of the ball head 41.

[0028] Among them, the ball head shaft 42 is constructed as a hollow shaft tube structure, that is, the first ball head shaft and the second ball head shaft are respectively connected to the external air supply device and the external air extraction device, so that the gas discharged by the air supply device can enter the first air guide hole through the first ball head shaft. After the airflow in the first air guide hole enters the air guide groove 310, it will first impact the guide fin 311, so that the driving wheel seat 31 rotates relative to the ball head 41. The air extraction device can extract air from the second air guide hole through the second ball head shaft, so that the airflow forms a passage between the first ball head shaft, the air guide groove 310 and the second ball head shaft, and continuously drives the driving wheel seat 31 to rotate on the outer surface of the ball head 41.

[0029] In some embodiments, multiple air guide holes 410 are arranged around the axial direction and connected to the air guide groove 310. Corresponding guide fins 311 are also arranged around the axial direction, and the guide fins 311 are distributed in a spiral shape, so that when the airflow hits the guide fins 311, the driving wheel seat 31 can rotate on the outer surface of the ball head 41.

[0030] Among them, along the axial direction, both ends of the wheel seat 31 are provided with conical grooves 3101. When the wheel seat 31 rotates to contact the ball head shaft 42, it reaches the limit position, so that the wheel seat 31 can swing around the axis at ±15° on the outside of the ball head 41.

[0031] like Figure 5 and Figure 6 As shown, the grinding wheel 30 can be adaptively adjusted according to the concave angle of the drill bit 01, so that the grinding wheel 30 can better fit the concave surface of the drill bit 01, thereby reducing the difficulty of manual operation, making it easier to operate, and improving the grinding efficiency to a certain extent.

[0032] Furthermore, the air guide groove 310 is configured so that when the wheel seat 31 swings at ±15° around the axis, the first air guide hole and the second air guide hole are both connected to the air guide groove 310, that is, the width range of the air guide groove 310 is greater than the width between the first air guide hole and the second air guide hole. In this way, during the swinging of the wheel seat 31, the air guide groove 310 and the first air guide hole and the second air guide hole can still remain connected, so that the wheel seat 31 can continue to rotate under the action of the airflow.

[0033] In some embodiments, in order to make the grinding wheel 30 not only adapt to the angle of the concave surface of the drill bit 01, but also better fit the concave surfaces with different curvatures, an airbag 33 is provided between the grinding belt 32 and the wheel seat 31, and the grinding belt 32 includes a flexible grinding belt. The airbag 33 is filled between the wheel seat 31 and the grinding belt 32, and makes the surface of the grinding belt 32 bulge outward in a circular arc shape. When the grinding belt 32 is pressed against the concave surface of the drill bit 01, under the action of the airbag 33, the grinding belt 32 can be adaptively changed according to the curvature change of the concave surface of the drill bit 01, so as to keep the surface of the grinding belt 32 always in contact with the concave surface of the drill bit 01 over a large area, thereby achieving a better grinding effect.

[0034] In this way, the grinding wheel 30 can not only rotate on the surface of the ball joint 40, but also make the grinding wheel 30 swing along with the concave surface of the drill bit 01 by adjusting the axial angle to reduce the difficulty of manual operation. At the same time, an airbag 33 structure is arranged on the inner side of the grinding belt 32 to make the grinding belt 32 adaptively change according to the curvature change of the concave surface of the drill bit 01, thereby achieving a better grinding effect and improving the grinding efficiency.

[0035] like Figure 3 As shown, the rotating table 20 includes a table plate 21 and a slider 23. Two guide plates 22 are fixedly provided at the edge of the table plate 21 corresponding to the mounting groove 202. Four sliders 23 are provided and are respectively fixed at the two ends of the two ball head shafts 42. A movable groove 206 is provided on the inner side of the guide plate 22. The four sliders 23 are respectively slidably installed on the inner sides of the two movable grooves 206, so that the spacing between the two grinding wheels 30 is adjustable. In this way, the spacing between the two grinding wheels 30 can be adjusted according to the diameter of the drill bit 01, so that the grinding wheel 30 can adapt to the drill bits 01 of different diameters for grinding.

[0036] Furthermore, in order to enable the two grinding wheels 30 to adaptively adjust the spacing, a spring 24 is installed between the two sliders 23 in the same movable groove 206, and both ends of the spring 24 are fixedly connected to the two sliders 23, so that the sliders 23 have elastic potential energy to approach each other.

[0037] In this way, in the initial state, under the action of the spring 24, the two sliders 23 fit together, and a certain gap is reserved for the grinding wheel 30. When the drill bit 01 is inserted between the two grinding wheels 30, as the grinding proceeds, the drill bit 01 squeezes the grinding wheel 30 outward, and the grinding wheel 30 drives the slider 23 to slide synchronously in the movable groove 206. The sliders 23 approach each other under the action of the spring 24, so that the grinding wheel 30 is tightly attached to the concave surface of the drill bit 01 for grinding. In this way, it is ensured that during the grinding process, the grinding belt 32 can be adaptively changed according to the curvature change of the concave surface of the drill bit 01, so as to achieve a better grinding effect and improve the grinding efficiency.

[0038] In order to keep the air path unobstructed when the ball joint 40 is in an active state, a hollow groove 205 is further provided inside the table plate 21, and an air duct 25 is installed in the hollow groove 205. The air duct 25 includes a first air duct connected to the first ball head shaft and a second air duct connected to the second ball head shaft. The other end of the first air duct is connected to the air inlet interface 12, and the other end of the second air duct is connected to the air exhaust interface 13.

[0039] The air guide tube 25 is a flexible tube in a bent state, so that when the slider 23 moves in the movable groove 206 , the air guide tube 25 can always maintain a connection state with the first ball head shaft or the second ball head shaft.

[0040] Furthermore, a first air guide groove 203 and a second air guide groove 204 are provided on the outer wall of the table plate 21. The first air guide groove 203 and the second air guide groove 204 are both constructed as annular grooves and are staggered in the axial direction of the table plate 21. The first air guide groove 203 and the second air guide groove 204 are independent of each other. Exhaust holes and air extraction holes are respectively provided on the inner wall of the circular groove corresponding to the first air guide groove 203 and the second air guide groove 204. The exhaust hole is connected to the air inlet interface 12, and the air extraction hole is connected to the air extraction interface 13.

[0041] like Figure 2 and Figure 3 As shown, in this way, the external air supply device introduces gas into the first air guide groove 203 through the exhaust hole. After the annular first air guide groove 203 is filled with gas, it will be guided to the first ball head shaft through the first air guide pipe, and then enter the first air guide hole through the first ball head shaft. After the airflow in the first air guide hole enters the air guide groove 310, it will first impact the guide fin 311, causing the driving wheel seat 31 to rotate relative to the ball head 41. After the airflow impacts the guide fin 311, it is guided from the second air guide hole to the second ball head shaft, and then discharged from the second ball head shaft to the first air guide pipe, and then guided to the second air guide groove 204, and finally sucked out by the external air extraction device through the exhaust hole to realize the gas passage.

[0042] Furthermore, a mechanical seal 14 is installed between the table plate 21 and the polishing table 10, so that the table plate 21 and the polishing table 10 can rotate through the mechanical seal 14, and the first air guide groove 203 and the second air guide groove 204 are separated and independent by the mechanical seal 14, the first air guide groove 203 is connected to the first ball head shaft through the first air guide pipe, and the second air guide groove 204 is connected to the second ball head shaft through the second air guide pipe, so that the ball joint 40 can keep the air path unobstructed when it is in an active state and the rotating table 20 can keep the air path unobstructed when it is in a rotating state.

[0043] In some embodiments, the guide plate 22 includes two parallel distributed guide plates, and guide grooves 201 are opened on the guide plates corresponding to the ball head shaft 42 and the air guide tube 25, so that the ball head shaft 42 and the air guide tube 25 can slide in the guide groove 201, and the two guide plates are mainly used to limit the range of movement of the slider 23.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] The above description of the implementation mode is not restrictive. The figure shown in the drawings is only one of the implementation modes, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the scope of protection.

Claims

1. A polishing and grinding device for hardware drill bit processing, characterized in that: include: A grinding table (10), wherein the grinding table (10) is constructed as a rectangular plate, and a circular groove is provided on the grinding table (10); A rotating table (20) is installed in the circular groove and can rotate in the circular groove, and a mounting groove (202) is provided on the rotating table (20); Two ball joints (40) are installed in the installation groove (202), and a grinding wheel (30) is rotatably installed on the outer side of each ball joint (40); The grinding table (10) is fixedly provided with an air inlet interface (12) that can be connected to an external air supply device and an air exhaust interface (13) that can be connected to an external air exhaust device. The air inlet interface (12) and the air exhaust interface (13) are respectively connected to the two ends of the ball joint (40), so that airflow enters from one end of the ball joint (40), passes through the grinding wheel (30), and is discharged from the other end of the ball joint (40), and drives the grinding wheel (30) to rotate outside the ball joint (40), so that the two grinding wheels (30) can polish and grind the concave surfaces on both sides of the drill bit (01) at the same time.

2. The polishing and grinding device for hardware drill bit processing according to claim 1, characterized in that: The ball joint (40) comprises a ball head (41) and ball head shafts (42) fixedly arranged on both sides of the ball head (41) along the same axial direction; an air guide hole (410) is provided inside the ball head (41); the ball head shaft (42) comprises a first ball head shaft connected to the air inlet interface (12) and a second ball head shaft connected to the air extraction interface (13); and the air guide hole (410) comprises a first air guide hole connected to the first ball head shaft and a second air guide hole connected to the second ball head shaft; The grinding wheel (30) comprises a wheel seat (31) and a grinding belt (32) wrapped around the outside of the wheel seat (31) for grinding the drill bit (01); the wheel seat (31) is sleeved on the outside of the ball head (41); an air guide groove (310) is provided on the inside of the wheel seat (31) corresponding to the air guide hole (410); a plurality of guide fins (311) are provided in the air guide groove (310) and are centrally symmetrically distributed around an axis, so that the airflow from the first air guide hole enters the air guide groove (310) and impacts the guide fins (311), and then is discharged from the second air guide hole, thereby driving the wheel seat (31) to rotate around the axis on the outside of the ball head (41).

3. The polishing and grinding device for hardware drill bit processing according to claim 2 is characterized in that: Along the axis direction, both ends of the wheel seat (31) are provided with tapered grooves (3101), so that the wheel seat (31) can swing around the axis at an angle of ±15° on the outer side of the ball head (41), and the air guide groove (310) is arranged so that when the wheel seat (31) swings around the axis at an angle of ±15°, the first air guide hole and the second air guide hole are both connected to the air guide groove (310).

4. The polishing and grinding device for hardware drill bit processing according to claim 2, characterized in that: An air bag (33) is provided between the grinding belt (32) and the wheel seat (31); the grinding belt (32) comprises a flexible grinding belt; the air bag (33) is filled between the wheel seat (31) and the grinding belt (32) and causes the surface of the grinding belt (32) to protrude outwards in an arc shape.

5. The polishing and grinding device for hardware drill bit processing according to claim 2, characterized in that: The rotating table (20) comprises a table plate (21) and a slider (23); two guide plates (22) are fixedly provided on the edge of the table plate (21) corresponding to the mounting groove (202); four sliders (23) are provided and are respectively fixed on the two ends of the two ball head shafts (42); a movable groove (206) is provided on the inner side of the guide plate (22); the four sliders (23) are respectively slidably installed on the inner sides of the two movable grooves (206), so that the spacing between the two grinding wheels (30) is adjustable.

6. The polishing and grinding device for hardware drill bit processing according to claim 5, characterized in that: A spring (24) is installed between the two sliders (23) in the same movable groove (206), and the two ends of the spring (24) are respectively fixedly connected to the two sliders (23), so that the sliders (23) have elastic potential energy to approach each other.

7. The polishing and grinding device for hardware drill bit processing according to claim 5, characterized in that: An empty groove (205) is provided inside the table plate (21), an air guide tube (25) is installed in the empty groove (205), the air guide tube (25) comprises a first air guide tube connected to the first ball head shaft and a second air guide tube connected to the second ball head shaft, the other end of the first air guide tube is connected to the air inlet interface (12), and the other end of the second air guide tube is connected to the air extraction interface (13).

8. The polishing and grinding device for hardware drill bit processing according to claim 7, characterized in that: A first air guide groove (203) and a second air guide groove (204) are provided on the outer side wall of the table plate (21); the first air guide groove (203) and the second air guide groove (204) are both constructed as annular grooves and are staggered in the axial direction of the table plate (21); the first air guide groove (203) and the second air guide groove (204) are independent of each other; an exhaust hole and an air suction hole are respectively provided on the inner side wall of the circular groove corresponding to the first air guide groove (203) and the second air guide groove (204); the exhaust hole is communicated with the air inlet interface (12), and the air suction hole is communicated with the air suction interface (13).

9. The polishing and grinding device for hardware drill bit processing according to claim 8, characterized in that: A mechanical seal (14) is installed between the table plate (21) and the grinding table (10), so that the table plate (21) and the grinding table (10) rotate via the mechanical seal (14), and the first air guide groove (203) and the second air guide groove (204) are separated and independent via the mechanical seal (14); the first air guide groove (203) is connected to the first ball head shaft via the first air guide pipe, and the second air guide groove (204) is connected to the second ball head shaft via the second air guide pipe.

10. The polishing and grinding device for hardware drill bit processing according to claim 5, characterized in that: The guide plate (22) comprises two guide plates arranged in parallel, and guide grooves (201) are provided on the guide plates at locations corresponding to the ball head shaft (42) and the air guide tube (25), so that the ball head shaft (42) and the air guide tube (25) can slide in the guide grooves (201).

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