Split top hammer and method of machining the same

Abstract

The present application relates to a kind of split top hammer and its processing method, split top hammer includes hammer head and hammer tail, the hammer head is equipped with mating surface, the axis of the mating surface is equipped with connecting column, the end surface axis of the hammer tail is equipped with connecting groove, the hammer head and hammer tail are bonded by metal glue;The processing method of split top hammer, including the following steps: S1, sintering forms hammer head and hammer tail;S2, to hammer head and hammer tail processing grinding flat;S3, grinding out the chamfer of connecting groove opening;S4, at 300 DEG C temperature, hammer head and hammer tail are heated for 2 hours;S5, after heating hammer head and hammer tail to 200 DEG C, take out hammer head and hammer tail and clean surface;S6, smears metal glue;S7, the mating surface of hammer head is abutted on the end surface of hammer tail, connecting column is inserted into connecting groove, and hammer head and hammer tail are hotly fitted;S8, to hammer head and hammer tail pressurization lasts for 2 hours;S9, processing out the trapezoidal plane of hammer head and the bevel of hammer tail.

Description

TECHNICAL FIELD

[0001] The present application relates to a split top hammer and a processing method thereof, and belongs to the technical field of top hammer production and processing. BACKGROUND

[0002] In the superhard material industry, diamond is the hardest material known in the world. Due to the excellent physical and chemical properties of diamond, synthetic diamond has become a new and popular industry in the field of superhard material synthesis. The synthesis principle of diamond is that, on a six-sided top press (or a two-sided top), a certain pressure is applied to the six top hammers by a hydraulic system, the pressure is applied to a certain value, and when the pressure and temperature reach 5.5 Gpa and 1350-1500℃ respectively, the graphite begins to transform into diamond.

[0003] After multiple rounds of use of the conventional top hammer, the common damage area is also in the top surface area, and the outer circular area below is basically undamaged. Since the top surface has been damaged, it cannot be used continuously and needs to be scrapped as a whole. The conical table below is basically undamaged.

[0004] A split top hammer for diamond synthesis is disclosed in Chinese patent application CN101716479A, which includes a hammer head with a four-sided frustum body and a hammer tail below the hammer head, and the top surface of the hammer tail is connected with the bottom surface of the hammer head. The top hammer for diamond synthesis adopts a split structure including a hammer head and a hammer tail.

[0005] When the hammer head and the hammer tail of the split top hammer in the above-mentioned prior art are combined and assembled, the hammer head and the hammer tail body cannot be accurately aligned, and the longitudinal and transverse positions of the hammer head and the hammer tail are prone to deviation, and during use, the deviation is also prone to occur, which affects the normal use of the top hammer. SUMMARY

[0006] The present application aims to provide a split top hammer and a processing method thereof, which solves the problems of inaccurate assembly positioning and easy deviation in the prior art.

[0007] The technical problem of the present application is solved by the following technical scheme: A split type top hammer, comprising a hammer head in the shape of a truncated cone and a hammer tail in the shape of a column, a matching surface of the hammer head is connected with an end surface of the hammer tail, a connecting column extending towards the hammer tail is arranged at the axis of the matching surface, a connecting groove matched with the connecting column is arranged at the axis of the end surface of the hammer tail, and the hammer head and the hammer tail are bonded by metal glue; the hammer head and the hammer tail are arranged in a split type, so that the hammer head can be replaced when the hammer head is damaged, the hammer tail can be used repeatedly, the loss is reduced, the cost is saved, the relative position between the hammer head and the hammer tail can be avoided to deviate during assembly by matching and positioning of the connecting column and the connecting groove, the assembly accuracy of the hammer head and the hammer tail is improved, and the connecting strength between the hammer head and the hammer tail is strengthened by bonding with metal glue, so that the reliability and stability of the top hammer are ensured.

[0008] Preferably, a chamfer is arranged at the opening outer edge of the connecting groove; the chamfer can increase the guiding effect of the connecting column entering the connecting groove, facilitate accurate and efficient insertion of the connecting column into the connecting groove, accommodate more metal glue, and strengthen the connecting strength between the hammer head and the hammer tail at the chamfer.

[0009] Preferably, the matching surface of the hammer head is bonded with the end surface of the hammer tail by metal glue, and the outer surface of the connecting column is bonded with the inner surface of the connecting groove by metal glue; the matching surface of the hammer head is bonded with the end surface of the hammer tail by metal glue, and the outer surface of the connecting column is bonded with the inner surface of the connecting groove by metal glue, so that the bonding area of the metal glue is increased, and the bonding strength of the metal glue to the hammer head and the hammer tail is strengthened.

[0010] Preferably, the connecting column and the connecting groove are matched in interference after heating; the connecting column and the connecting groove are matched in interference after heating, so that the connecting tightness between the connecting column and the connecting groove is strengthened, and the connecting column and the connecting groove are prevented from being separated.

[0011] Preferably, the truncated cone side wall of the hammer head is provided with a plurality of trapezoidal planes, and the edge of the surface matched with the hammer head on the hammer tail is provided with a slope corresponding to each trapezoidal plane; the trapezoidal planes and the slopes are arranged to be spliced synchronously when the hammer head and the hammer tail are connected, so that the top hammer is formed and can be conveniently processed.

[0012] Preferably, the matching surface of the hammer head is ground by an electric pulse device; the matching surface of the hammer head is ground by an electric pulse device, so that the plane accuracy of the matching surface of the hammer head is improved, and the use of the assembled hammer head is more stable.

[0013] Preferably, the surface flatness of the hammer head and the perpendicularity of the connecting column are processed by an external grinding device; the surface flatness of the hammer head and the perpendicularity of the connecting column are processed by an external grinding device, which can improve the flatness precision of the outer surface of the hammer head, so that the assembly precision is higher, and the formation of the hammer head and the hammer tail is more stable and reliable.

[0014] Preferably, the inner surface flatness and the chamfer of the connecting groove are processed by an internal grinding device; the inner surface flatness and the chamfer of the connecting groove are processed by an internal grinding device, which can improve the flatness precision of the inner surface of the connecting groove, thereby enhancing the assembly effect.

[0015] Preferably, the trapezoidal plane of the hammer head is in a V-shaped structure that arches outward laterally; the trapezoidal plane of the hammer head is in a V-shaped structure that arches outward laterally, which can increase the volume of the middle section of the hammer head, thereby enhancing the strength of the hammer head.

[0016] The processing method of the split top hammer comprises the following steps:

[0017] S1, sintering to form a hammer head and a hammer tail;

[0018] S2, processing and grinding the surface flatness of the hammer head and the surface flatness of the hammer tail;

[0019] S3, grinding the chamfer at the opening of the connecting groove by an internal grinding device;

[0020] S4, heating the hammer head and the hammer tail at a temperature of 300°C for 2 hours;

[0021] S5, after heating the hammer head and the hammer tail to 200°C, taking out the hammer head and the hammer tail and cleaning the surface;

[0022] S6, applying metal glue on the mating surface of the hammer head and the outer surface of the connecting column, and on the end surface of the contact mating surface of the hammer tail;

[0023] S7, abutting the mating surface of the hammer head on the end surface of the hammer tail, inserting the connecting column into the connecting groove, and heat fitting the hammer head and the hammer tail;

[0024] S8, pressurizing the connected hammer head and hammer tail in step S7 for 2 hours;

[0025] S9, after cooling the hammer head and the hammer tail in step S8, processing the trapezoidal plane of the hammer head and the bevel of the hammer tail;

[0026] The above method is used to process the split top hammer, which makes the production and processing of the hammer head and the hammer tail more efficient, while ensuring the processing precision of the hammer head and the hammer tail, and ensuring the high precision during assembly of the hammer head and the hammer tail, so that the formed top hammer is more stable and reliable, and the hammer head is easy to replace.

[0027] Therefore, the present application has the advantages of facilitating replacement of the hammer head, reducing loss, saving cost, ensuring high precision of assembly of the hammer head and the hammer tail, avoiding assembly error of relative position of the hammer head and the hammer tail, and making the formed top hammer more stable and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic diagram of the present application.

[0029] Figure 2 is Figure 1 a structural explosion diagram. DETAILED DESCRIPTION

[0030] As Figures 1-2 shown, a split top hammer includes a conical hammer head 1 and a columnar hammer tail 2, the hammer head 1 is provided with a matching surface 11 connected with an end surface of the hammer tail 2, an axis of the matching surface 11 is provided with a connecting column 12 extending towards the hammer tail 2, an axis of the end surface of the hammer tail 2 is provided with a connecting groove 21 matched with the connecting column 12, the hammer head 1 and the hammer tail 2 are bonded by metal glue, the matching surface of the hammer head 1 is bonded with the end surface of the hammer tail 2 by the metal glue, the outer surface of the connecting column 12 is bonded with the inner surface of the connecting groove 21 by the metal glue, the connecting groove 21 is provided with a chamfer 211 at an outer edge of an opening, and the connecting column 12 and the connecting groove 21 are interference fit after heating.

[0031] The metal glue is a product available in the market, which is prior art and will not be described herein, the hammer head and the hammer head are combined to form the top hammer, the connecting column of the hammer head is inserted into the connecting groove of the hammer tail, the hammer head and the hammer tail are bonded by the metal glue, the chamfer can guide the entry of the connecting column, facilitate the entry of the connecting column, and the chamfer can accommodate more metal glue, and the hammer head and the hammer tail need to be interference fit after heating, after the hammer head is excessively damaged, a new hammer head can be replaced, the new hammer head is heated and interference fit with the old hammer tail, and bonded by the metal glue, the metal glue is melted after heating and solidified after cooling, the metal glue can be removed by heating to bond the old hammer head and the hammer tail, so that the new hammer head is replaced.

[0032] The matching surface 11 of the hammer head 1 is ground flat by an electric pulse device, the surface flatness of the hammer head 1 and the perpendicularity of the connecting column 12 are processed by an external grinding device, and the inner surface flatness of the connecting groove 21 and the chamfer 211 are processed by an internal grinding device.

[0033] After the hammer head and the hammer tail are processed, the matching surface of the hammer head is processed flat by an electric pulse device, and a matching copper electrode is used to process the matching surface to a flatness within 0.005 mm. An outer circle grinding device is used to process the flatness of the surface of the hammer head, the perpendicularity and flatness of the connecting column, and the perpendicularity of the cylindrical side surface to the matching surface within 0.005. An inner circle grinding device is used to process the chamfer of the connecting groove.

[0034] As shown in Figures 1-2 , the frustoconical side wall of the hammer head 1 is provided with a plurality of trapezoidal planes 13, and the edge of the surface of the hammer tail 2 that matches the hammer head 1 is provided with a slope 22 corresponding to each trapezoidal plane 13, and the trapezoidal plane of the hammer head is a V-shaped structure that arches outward laterally. The side wall of the hammer head is shaped to connect and enclose the trapezoidal planes of the frustoconical side of the hammer head, and the slope at the edge of the end surface of the hammer tail is processed together with the trapezoidal planes after the forming of the hammer, avoiding the trouble of adjusting the relative position between the hammer head and the hammer tail. The middle section of the trapezoidal plane arches outward laterally to form a V-shaped structure with a larger angle, which strengthens the support strength of the middle section of the hammer head.

[0035] As shown in the processing method of the split hammer, Figures 1-2 , the processing method comprises the following steps:

[0036] S1, sintering to form a hammer head and a hammer tail;

[0037] S2, processing and grinding the surface flatness of the hammer head and the surface flatness of the hammer tail;

[0038] S3, grinding the chamfer at the opening of the connecting groove by an inner circle grinding device;

[0039] S4, heating the hammer head and the hammer tail to 300°C for 2 hours;

[0040] S5, after heating the hammer head and the hammer tail to 200°C, taking out the hammer head and the hammer tail and cleaning the surface;

[0041] S6, applying metal glue to the matching surface of the hammer head and the outer surface of the connecting column, and to the end surface of the contact matching surface of the hammer tail;

[0042] S7, abutting the matching surface of the hammer head against the end surface of the hammer tail, inserting the connecting column into the connecting groove, and heat fitting the hammer head and the hammer tail;

[0043] S8, pressurizing the connected hammer head and hammer tail in step S7 for 2 hours;

[0044] S9, after the hammer head and the hammer tail in step S8 are cooled, processing the trapezoidal plane of the hammer head and the slope of the hammer tail.

[0045] The hammer head and the hammer tail are manufactured separately, sintered into shape in advance, and then ground flat by outer circle grinding equipment, inner circle grinding equipment and plane grinding equipment after sintering, and chamfer of connecting groove is processed. After grinding flat of the surface of the hammer head and the hammer tail, the hammer head and the hammer tail are put into a heating furnace and heated at a temperature of 300 DEG C until the hammer head and the hammer tail are heated to 200 DEG C. The hammer head and the hammer tail are taken out by tools, and the surface of the hammer head and the hammer tail is cleaned by air. In the heated state of the hammer head and the hammer tail, metal glue is applied to the contact surface between the hammer head and the hammer tail, and then the hammer head and the hammer tail are closed and bonded together. Then the hammer head is rotated to ensure that the contact surface between the hammer head and the hammer tail is fully contacted and evenly applied with the metal glue, and the hammer head is axially pressed, and the pressure is maintained for two hours. After the pressure is completed and cooled, the conventional top hammer is processed to process the trapezoidal plane on the hammer head and the inclined surface on the hammer tail.

Claims

1. A method of machining a split top hammer, characterized by: The hammer head (1) and the hammer tail (2) are connected by metal glue, the connecting column (12) and the connecting groove (21) are interference fit after heating, the conical side wall of the hammer head (1) is provided with a plurality of trapezoidal planes (13), the face edge of the hammer tail (2) is provided with a corresponding inclined surface (22) corresponding to each trapezoidal plane (13), and the trapezoidal planes (13) of the hammer head (1) are V-shaped structures laterally arched outward. The method comprises the following steps: S1, sintering forming a hammer head and a hammer tail; S2, processing and grinding the surface flatness of the hammer head and the surface flatness of the hammer tail; S3, grinding the chamfer at the opening of the connecting groove by an internal grinding equipment; S4, heating the hammer head and the hammer tail at a temperature of 300 DEG C for 2 hours; S5, after heating the hammer head and the hammer tail to 200 DEG C, taking out the hammer head and the hammer tail and cleaning the surface; S6, applying metal glue on the connecting column outer surface of the hammer head and the connecting groove opening chamfer of the hammer tail; S7, abutting the connecting surface of the hammer head on the end face of the hammer tail, inserting the connecting column into the connecting groove, and hot fitting the hammer head and the hammer tail; S8, pressurizing the connected hammer head and hammer tail in step S7 for 2 hours; S9, after cooling the hammer head and the hammer tail in step S8, processing the trapezoidal plane of the hammer head and the inclined surface of the hammer tail.

2. The method of claim 1, wherein: The opening outer edge of the connecting groove (21) is provided with a chamfer (211).

3. The method of claim 1, wherein: The connecting surface (11) of the hammer head (1) is ground by an electric pulse equipment.

4. The method of claim 1, wherein: The surface flatness of the hammer head (1) and the perpendicularity of the connecting column (12) are processed by an external grinding equipment.

5. The method of claim 2, wherein: The inner surface flatness of the connecting groove (21) and the chamfer (211) are processed by an internal grinding equipment.

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