Cemented carbide hammer chamfering mechanism

Abstract

The present invention relates to a cemented carbide top hammer chamfering processing mechanism, belonging to the technical field of top hammer chamfering processing equipment, mainly comprising a clamping part for installing the top hammer and a grinding tool for chamfering processing, the clamping part comprises a plurality of sliding blocks installed in a linear sliding manner in an annular array, the sides of all the sliding blocks facing each other are contact surfaces that can fit with the inclined surface of the top hammer, and the number of the sliding blocks is consistent with the number of the inclined surfaces of the top hammer; the clamping part also comprises a vertically movable pressure handle, the pressure handle is located directly above the top hammer, when all the sliding blocks are close to each other, the pressure handle moves vertically downward, and when the contact surfaces of all the sliding blocks fit with the inclined surfaces one by one, the bottom end of the pressure handle fits with the top surface of the top hammer. The cemented carbide top hammer chamfering processing mechanism can quickly and efficiently perform chamfering processing on the top hammer, and the precision is stable and controllable.

Description

Technical Field

[0001] The invention relates to the technical field of top hammer chamfering processing equipment, and in particular to a cemented carbide top hammer chamfering processing mechanism. Background Art

[0002] Cemented carbide top hammer is a component processed from cemented carbide, which can be used as an important component of devices such as the production of artificial diamonds. It is mainly used in the synthesis of superhard materials such as artificial diamonds by high temperature and high pressure method. Specifically, cemented carbide top hammers are widely used in the fields of artificial diamond synthesis and cultured diamond production. Cemented carbide top hammers are mainly composed of tungsten carbide and cobalt, and have high strength, hardness, wear resistance, good toughness and thermal stability. These characteristics enable the top hammer to work for a long time in a high temperature and high pressure environment without being easily damaged. With the technological upgrading of the superhard materials industry and the expansion of the cultured diamond market, the demand for cemented carbide top hammers is also increasing. However, due to the above-mentioned series of material characteristics, especially the high hardness, the chamfering processing of cemented carbide top hammers during production cannot be carried out according to the traditional processing method, that is, it cannot be turned directly on a lathe using a chamfering cutter or a general turning tool like ordinary metal parts.

[0003] Traditional top hammer chamfering processing equipment basically utilizes a positioning fixture for clamping the top hammer. The upper surface of the positioning fixture has a groove structure with the same shape as the bottom structure of the top hammer, so that the bottom of the top hammer can be contacted and positioned first, and then pressure is applied to the top hammer to allow the top hammer to be firmly fixed on the positioning clamp, and then the grinding belt is driven to contact the edge of the top for chamfering. This processing equipment mainly performs chamfering with manual assistance, and its core processing principle still refers to the chamfering of ordinary metal parts by existing lathes. For the top hammer made of cemented carbide, there are still limitations. Not only is the processing efficiency low, but also because of the lack of mature cooperating feed mechanisms of standardized equipment such as lathes, independent operation of multi-directional positioning requires the operation of multiple independent fixtures for corresponding movement and clamping, which is very likely to result in greater cumulative errors, and then it is difficult to ensure accuracy, especially when working on complex surfaces and narrow spaces, the operator needs to move back and forth and adjust and install multiple positioning components one by one, which is very inconvenient. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a cemented carbide top hammer chamfering processing mechanism to solve the problem in the prior art that when processing the chamfer of the cemented carbide top hammer, the processing efficiency is low, and the cumulative error is easily increased when multiple fixtures operate independently, resulting in difficulty in controlling the accuracy.

[0005] The present invention is achieved through the following technical solutions:

[0006] A cemented carbide top hammer chamfering processing mechanism comprises a clamping portion for mounting the top hammer and a grinding tool for chamfering processing, wherein the clamping portion comprises a plurality of sliding blocks linearly mounted in an annular array, wherein the mutually opposing sides of all the sliding blocks are contact surfaces capable of fitting with the inclined surface of the top hammer, and the number of the sliding blocks is consistent with the number of the inclined surfaces of the top hammer; the clamping portion also comprises a vertically movable pressing handle, wherein the pressing handle is located directly above the top hammer, and when all the sliding blocks are brought close to each other, the pressing handle moves vertically downward, and when the contact surfaces of all the sliding blocks fit with the inclined surfaces one by one, the bottom end of the pressing handle fits with the top surface of the top hammer.

[0007] Furthermore, the sliding block is a right-angled trapezoidal structure, the plane where the hypotenuse of the right-angled trapezoid is located is the contact surface, the upper base of the right-angled trapezoid is shorter than the lower base, and the surface where the lower base edge is located is installed on a base in a horizontal sliding fit.

[0008] Furthermore, a mounting block is fixed on the upper surface of the base, and a driving bolt is threadedly passed through the mounting block. One end of the driving bolt is a cylindrical gear, and the other end of the driving bolt is rotatably mounted in the sliding block and does not separate from the sliding block. The present invention also includes an end face gear installed in situ for self-rotation, and the end face gear is meshed with the cylindrical gear to drive all the cylindrical gears to rotate synchronously and drive all the driving bolts to move axially synchronously.

[0009] Furthermore, the end face gear is an annular structure, and the top hammer is vertically installed on the inner side of the end face gear. The end face gear is located above the cylindrical gear, and two L-shaped connecting arms are fixed on the side facing away from the cylindrical gear. A mounting part is integrally fixed between the two connecting arms, and a threaded hole is provided in the center of the mounting part. The pressure handle is threadedly installed in the threaded hole and axially slides with a rectangular rod coaxially arranged in the threaded hole, and the top end of the rectangular rod is fixedly installed.

[0010] Furthermore, a support block is fixed above one side of the base, a guide rod is horizontally fixed to the side wall of the support block, and the guide rod is axially inserted into the driving bolt to guide the axial movement of the driving bolt.

[0011] Furthermore, the central outer wall of the mounting portion is provided with an annular groove recessed inwardly, and the annular groove is used to install a deep groove ball bearing; the inner and outer sides of the bottom end of the end face gear are respectively provided with an annular step, and the top of a plane bearing is respectively installed on the two annular steps, and the bottoms of the two plane bearings are respectively installed on the sinks on the opposite sides of the tops of the support block and the mounting block, and the plane bearings are coaxially arranged with the deep groove ball shaft section.

[0012] Furthermore, the other end of the driving bolt has a circular boss, and the circular boss is coaxially rotatably mounted inside the vertical side wall of the sliding block.

[0013] Furthermore, the grinding tool is a closed grinding belt in transmission, and the inner wall of the grinding belt is used to contact the top edge of the top hammer to achieve chamfering; the base can make a forward and reverse reciprocating rotation of less than 360° around the axis of the top hammer under an external driving force.

[0014] Furthermore, the grinding tool includes a truncated table coaxially fixed to the bottom end of the pressing handle, and a driven gear disc is coaxially sleeved on the outer side of the truncated table, the driven gear disc is meshed with a driving gear column on its rear side, the driving gear column is connected to the motor main shaft, the gear thickness of the driving gear column must ensure that the driving gear column does not disengage from the driven gear disc during the vertical movement of the pressing handle; a plurality of grinding bars in an annular array are fixed below the driven gear disc, or a grinding disc with abrasive grains on the inner wall is fixed, and the axis of the annular array of grinding bars and the axis of the grinding disc are both coaxial with the pressing handle.

[0015] Furthermore, a limit rod is threadedly installed on the front side of the mounting portion, and the bottom end of the limit rod is located above the top hammer. When the top edge of the top hammer adaptively moves up due to being ground by the grinding bar or grinding disc, it contacts the bottom end of the limit rod and stops moving up.

[0016] The beneficial effects of the present invention are:

[0017] The cemented carbide top hammer chamfering processing mechanism is based on the unique structural feature that the cemented carbide top hammer has multiple identical inclined surfaces. Through the sliding blocks with the same number as the inclined surfaces at the bottom end of the top hammer, the top hammer undergoes corresponding spontaneous movement during synchronous extrusion and pushing, so that the top hammer gradually moves to a state tending to be upright, and combined with the extrusion correction of the pressure handle, the posture is finally adjusted to an axially vertical clamping position to provide an installation positioning basis for accurate and rapid chamfering processing. The present invention is simple, compact and very clever in terms of the entire structure, and is very easy to manufacture and use. It is no longer necessary to position the top hammer in different directions separately as in the existing case where several functional components are directly and independently pieced together, and there is a lack of efficient processing effect of the linkage mechanism. Moreover, when they are not related to each other, it is difficult to ensure that the relative clamping and positioning relationship is always consistent, and it is difficult to well guarantee the chamfering processing accuracy and speed.

[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A cross-sectional view of one of the implementation structures of the present invention;

[0020] Figure 2 A cross-sectional view of another embodiment of the present invention;

[0021] Figure 3 It is a top view of the end face gear of the present invention.

[0022] In the figure: top hammer 1, inclined surface 101, sliding block 2, pressure handle 3, mounting block 4, driving bolt 5, cylindrical gear 6, guide rod 7, circular boss 8, support block 9, grinding belt 10, base 11, end gear 12, plane bearing 13, connecting arm 14, mounting part 15, deep groove ball bearing 16, rectangular rod 17, driven gear plate 18, driving gear column 19, grinding disc 20, limit rod 21, round table 22. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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 part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] See also Figure 1-2The present invention provides a technical solution: a cemented carbide top hammer chamfering processing mechanism, which, when specifically manufactured, mainly includes a clamping portion for mounting the top hammer 1, and a grinding tool for chamfering processing. Usually, the grinding tool adopts a grinding belt 10 to adapt to the hardness of the cemented carbide material of the top hammer 1, and avoid the problem of direct chipping of the blade when the traditional metal chamfering tool performs rigid cutting. In more detail, the clamping portion in the present embodiment is very special, because it mainly includes a plurality of sliding blocks 2 in an annular array, and these sliding blocks 2 can all move linearly and synchronously, and the sides of all the sliding blocks 2 facing each other are all contact surfaces that can fit with the inclined surface 101 of the top hammer 1, so as to contact and fit with the inclined surface 101 of the top hammer 1 for positioning and clamping. Therefore, the number of these sliding blocks 2 in the present embodiment is required to be consistent with the number of the inclined surfaces 101 of the top hammer 1, so as to better clamp and fix them comprehensively. In addition to the above-mentioned clamping action on the horizontal plane, due to the special multi-slope structure of the top hammer 1, it is also necessary to limit and fix it in other directions. In this embodiment, the clamping part used must also include a vertically movable pressure handle 3, which is located directly above the top hammer 1. When all the sliding blocks 2 are driven to approach each other synchronously, the inclined surfaces 101 at the bottom end of the top hammer 1 will be squeezed. If the upper part of the hammer is not restricted, the top hammer 1 will be lifted to allow the hammer to move axially upward. Therefore, the pressure handle 3 is moved vertically downward at this time to cooperate with all the synchronously approaching sliding blocks 2. In this process, once the contact surfaces of all the sliding blocks 2 are in one-to-one correspondence with the inclined surfaces 101, and at the same time, the bottom end of the above-mentioned pressure handle 3 is in contact with the top surface of the top hammer 1, the top hammer 1 cannot continue to move, so that the top hammer 1 is clamped and fixed in an axial vertical posture, which is beneficial to the accurate and rapid chamfering of the bottom edge of the top hammer 1 when the top hammer 1 or the mold rotates.

[0027] In this embodiment: As one of the specific implementation structures, Figure 1-2 The sliding block 2 can be processed into a right-angled trapezoidal structure, and the plane where the hypotenuse of the right-angled trapezoid is located is the contact surface, which is used to fit the inclined surface 101 of the top hammer 1, and the upper base of the right-angled trapezoid is shorter than the lower base, so that the contact surface is inclined downward toward the side where they are close to each other, and the surface where the lower base is located is installed on a base 11 in a horizontal sliding fit, and then moves stably to fit closely against the inclined surface 101 of the top hammer 1.

[0028] In this embodiment: Continue to refer to Figure 1-2A mounting block 4 is fixed on the upper surface of the base 11. The mounting block 4 can be integrally formed with the base 11. A driving bolt 5 is threadedly passed through the mounting block 4. The driving bolt 5 is a high-strength bolt. One end of the driving bolt 5 is processed into a cylindrical gear 6, that is, the end that should be used as a nut is replaced by a cylindrical gear 6, and the other end of the driving bolt 5 needs to be installed in the sliding block 2 in a rotational manner, and does not separate from the sliding block 2, so as to always maintain a reliable connection with the sliding block 2. In addition, the clamping part in this embodiment also includes an end face gear 12 installed in situ to rotate. This end face gear 12 is meshed with the aforementioned cylindrical gear 6, so that when the end face gear 12 is driven to rotate, all cylindrical gears 6 can be driven to rotate synchronously, thereby driving all driving bolts 5 to move axially synchronously, pushing the top hammer 1 to the central position, and together with the aforementioned pressure handle 3, the top hammer 1 is vertically and stably installed. In practice, the face gear 12 may be drivingly connected to a separate motor, and in use, the face gear 12 is continuously provided with torque.

[0029] In this embodiment: Figure 1-2 The end gear 12 is processed into a ring structure. On the one hand, the structure is lightweight and easy to install. On the other hand, the inner side of the end gear 12 is mainly used for vertical installation of the top hammer 1, and the structure is more compact. When installing, the end gear 12 is located above the cylindrical gear 6, and as shown in FIG. Figure 3 Two L-shaped connecting arms 14 are fixed to the side of the end face gear 12 facing away from the cylindrical gear 6, and a mounting portion 15 is fixed in an integral manner between the two connecting arms 14, and the three can be integrally formed. In addition, a threaded hole is provided in the center of the mounting portion 15, and the pressing handle 3 is threadedly mounted in the threaded hole and axially slides with a rectangular rod 17 coaxially arranged in the threaded hole. The cross section of the rectangular rod 17 is rectangular, and the top of the rectangular rod 17 is fixedly mounted, so that the integral structure formed by the mounting portion 15, the connecting arm 14, and the end face gear 12, when rotating in situ around the axis, the pressing handle 3 moves axially due to the threaded transmission with the threaded hole and the rotation limiting effect of the rectangular rod 17, thereby achieving contact positioning, extrusion, and fixation of the top surface of the top hammer 1.

[0030] As a specific implementation detail, Figure 1-2A support block 9 can be fixed above one side of the base 11, and a guide rod 7 is horizontally fixed on the side wall of the support block 9. The guide rod 7 is axially inserted into the drive bolt 5 to guide the axial movement of the drive bolt 5, so as to make up for the lack of coaxial movement accuracy of the threaded fit. In addition, at the outer wall in the center of the mounting portion 15, there is an annular groove recessed inward. This annular groove is used to install a deep groove ball bearing 16, which plays a role in centering and bearing the mounting portion 15. At the same time, an annular step with an L-shaped cross-section is processed on both the inner and outer sides of the bottom end of the end gear 12. The top of a plane bearing 13 is respectively installed on the two annular steps, and the bottoms of the two plane bearings 13 are respectively installed on a sink on the opposite sides of the top of the support block 9 and the mounting block 4, and the plane bearing 13 is coaxially arranged with the deep groove ball shaft section to ensure the coaxiality of the end gear 12 with the above-mentioned pressing handle 3 when it rotates. As shown Figure 1-2 In order to maintain the relative connection relationship between the sliding block 2 and the driving bolt 5, a circular boss 8 is provided at the other end of the driving bolt 5. The circular boss 8 is coaxially rotatably installed within the vertical side wall of the sliding block 2. Then, when the driving bolt 5 rotates, it always has a good traction force or thrust force on the sliding block 2.

[0031] In the above embodiments, the grinding tool can be designed as a closed grinding belt 10 in transmission, similar to a belt transmission, as in the traditional design, and the inner wall of the grinding belt 10 is used to contact the top edge of the top hammer 1, so as to achieve chamfering. Due to the existence of the connecting arm 14 on the end gear 12, the base 11 can make a forward and reverse reciprocating rotation of less than 360° around the axis of the top hammer 1 under the external driving force, rather than directly unidirectionally cyclically rotating.

[0032] As an optimal design structure, to achieve the maximum degree of automated chamfering, a special grinding tool can be designed, instead of the traditional belt grinding tool, such as Figure 2As shown, the abrasive tool in this embodiment includes a truncated table 22 coaxially fixed to the bottom end of the pressing handle 3, and a driven toothed disc is coaxially sleeved on the outer side of the truncated table 22, and the driven toothed disc is meshed with a driving gear column 19 at its rear side. The driving gear can be rotatably mounted on an adaptively designed frame, or directly mounted on the above-mentioned base 11. The driving gear column 19 is connected to the main shaft of a motor for transmission, and then provides power support for chamfering. One of the most critical points is that the gear thickness of the driving gear column 19 must ensure that the driving gear column 19 does not disengage from the meshing with the driven toothed disc during the vertical movement of the pressing handle 3. This is also the reason why a columnar gear is used here, which can rotate on one side and move axially on the other. As for the grinding tool, it can be a plurality of grinding bars in an annular array fixed under the driven gear disc. These grinding bars can be rectangular strip structures, which are in contact with the top surface of the top hammer 1 at a set angle, such as a 45° angle with each other. Alternatively, it can be a grinding disc 20 with abrasive grains on the inner wall. The two actually have the same principle, except that the grinding disc 20 completely covers the top of the top hammer 1 and fully contacts the end edge, while the grinding bars are intermittently arranged. Moreover, whether a ring array of grinding bars or a whole grinding disc 20 is used directly, the axes of the two must be coaxial with the pressure handle 3 to accurately grind the chamfer. The above implementation structure is an optimal embodiment of the present invention. It not only realizes the synchronous linkage of the movement of the sliding block 2 and the movement of the pressure handle 3, and automatically clamps and positions the top hammer 1, but also has the greatest advantage that during the grinding and chamfering process, the top edge of the top hammer 1 is ground off, which will cause the top hammer 1 to automatically move upward under the push of the surrounding sliding blocks 2, thereby avoiding the problem of the top hammer 1 gradually becoming loose due to the progress of the grinding process. During the entire grinding and chamfering process, the top hammer 1 is reliably clamped and positioned to maintain the chamfering accuracy and reliability.

[0033] On the basis of the above-mentioned optimal embodiment, the chamfering processing mechanism can also be set to a clever design of automatically controlling the chamfering size: that is, Figure 2As shown, a limit rod 21 is threadedly installed on the front side of the mounting portion 15, and the bottom end of the limit rod 21 is located above the top hammer 1. During the chamfering process, when the top edge of the top hammer 1 is ground by the grinding bar or the grinding disc 20, and thus adaptively moves up under the extrusion of the sliding block 2, it will contact the bottom end of the limit rod 21 after rising to a certain height, thereby stopping moving up. Once the top edge of the top hammer 1 is fully ground at this time, the top hammer 1 is automatically separated from the grinding tool, and the processing is completed, thereby accurately achieving the purpose of automatically controlling the chamfering size in such an extremely simple way. In addition, in the design of combining the pressing handle 3 with the mold in the present embodiment, a driving structure can be independently set for the sliding block 2, which is separated from the linkage control with the pressing handle 3. At this time, the driving mechanism of the sliding block 2 can directly adopt a hydraulic cylinder to maintain a continuous thrust on it, but the degree of automation is greatly reduced. Therefore, in terms of the degree of automation of the processing, it is only a semi-automatic chamfering process. Therefore, the structure of the linkage between the sliding block 2 and the pressing handle 3 is preferably used, and the limiting function of the above-mentioned limit rod 21 is used to automatically control the processing size.

[0034] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions of the technical solution of the present invention do not depart from the purpose and scope of the technical solution of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A cemented carbide top hammer chamfering mechanism, comprising a clamping portion for mounting a top hammer (1) and a grinding tool for chamfering, characterized in that: The clamping portion comprises a plurality of sliding blocks (2) arranged in an annular array and installed in a linear sliding manner, wherein the surfaces of all the sliding blocks (2) facing each other are contact surfaces that can fit with the inclined surface (101) of the top hammer (1), and the number of the sliding blocks (2) is consistent with the number of the inclined surfaces (101) of the top hammer (1); the clamping portion also comprises a vertically movable pressing handle (3), the pressing handle (3) is located directly above the top hammer (1), and the pressing handle (3) moves vertically downward when all the sliding blocks (2) are brought close to each other, and when the contact surfaces of all the sliding blocks (2) fit with all the inclined surfaces (101) one by one, the bottom end of the pressing handle (3) fits with the top surface of the top hammer (1); The sliding block (2) is a right-angled trapezoidal structure, the plane where the hypotenuse of the right-angled trapezoid is located is the contact surface, the upper base of the right-angled trapezoid is shorter than the lower base, and the surface where the lower base is located is installed on a base (11) in a horizontal sliding fit; A mounting block (4) is fixed on the upper surface of the base (11), and a driving bolt (5) is threadedly passed through the mounting block (4). One end of the driving bolt (5) is a cylindrical gear (6), and the other end of the driving bolt (5) is rotatably mounted in the sliding block (2) and does not separate from the sliding block (2). It also includes an end face gear (12) installed in situ to rotate on its own, the end face gear (12) meshing with the cylindrical gear (6) to drive all the cylindrical gears (6) to rotate synchronously and drive all the driving bolts (5) to move axially synchronously.

2. The cemented carbide top hammer chamfering processing mechanism according to claim 1, characterized in that: The end face gear (12) is an annular structure. The center of the inner side of the end face gear (12) is provided with a top hammer (1) for vertical installation. The end face gear (12) is located above the cylindrical gear (6), and a mounting portion (15) is fixed to the side away from the cylindrical gear (6) through a connecting arm (14). The mounting portion (15) has a threaded hole in the center. The pressing handle (3) is threadedly installed in the threaded hole and axially slides with a rectangular rod (17) coaxially arranged in the threaded hole. The top end of the rectangular rod (17) is fixedly installed.

3. The cemented carbide top hammer chamfering processing mechanism according to claim 2, characterized in that: A support block (9) is fixed above one side of the base (11), and a guide rod (7) is horizontally fixed to the side wall of the support block (9). The guide rod (7) is axially inserted into the driving bolt (5) to guide the axial movement of the driving bolt (5).

4. The cemented carbide top hammer chamfering processing mechanism according to claim 3, characterized in that: The central outer wall of the mounting portion (15) is provided with an annular groove which is recessed inwardly, and the annular groove is used to install a deep groove ball bearing (16); the inner and outer sides of the bottom end of the end face gear (12) are each provided with an annular step, and the top of a plane bearing (13) is respectively installed on the two annular steps, and the bottoms of the two plane bearings (13) are respectively installed on the sinking platforms on the opposite sides of the tops of the support block (9) and the mounting block (4), and the plane bearing (13) is coaxially arranged with the deep groove ball shaft section.

5. The cemented carbide top hammer chamfering processing mechanism according to claim 1, characterized in that: The other end of the driving bolt (5) has a circular boss (8), and the circular boss (8) is coaxially rotatably mounted inside the vertical side wall of the sliding block (2).

6. The cemented carbide top hammer chamfering processing mechanism according to claim 2, characterized in that: The grinding tool is a closed grinding belt (10) in transmission, the inner wall of the grinding belt (10) is used to contact the top edge of the top hammer (1) to achieve chamfering; the base (11) can make a positive and negative reciprocating rotation less than 360° around the axis of the top hammer (1) under an external driving force.

7. The cemented carbide top hammer chamfering processing mechanism according to claim 2, characterized in that: The grinding tool comprises a truncated table (22) coaxially fixed to the bottom end of the pressing handle (3), a driven toothed disc is coaxially sleeved on the outer side of the truncated table (22), the driven toothed disc is meshed with a driving gear column (19) at the rear side thereof, the driving gear column (19) is connected to the main shaft of the motor in a transmission manner, and the gear thickness of the driving gear column (19) is required to ensure that the driving gear column (19) does not disengage from the meshing with the driven toothed disc during the vertical movement of the pressing handle (3); A plurality of grinding bars in an annular array are fixed below the driven gear disc, or a grinding disc (20) having abrasive grains on its inner wall is fixed, and the axis of the grinding bar annular array and the axis of the grinding disc (20) are both coaxial with the pressing handle (3).

8. The cemented carbide top hammer chamfering processing mechanism according to claim 7, characterized in that: A limiting rod (21) is also threadedly installed on the front side of the mounting portion (15), and the bottom end of the limiting rod (21) is located above the top hammer (1). When the top edge of the top hammer (1) adaptively moves upward due to being ground by the grinding bar or the grinding disc (20), it contacts the bottom end of the limiting rod (21) and stops moving upward.

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