Machining method for wedge block of two-sided jacking machine

Abstract

The invention provides a machining method for a wedge block of a two-sided jacking machine, and belongs to the field of press machines. The method comprises the steps that a cylindrical blank is cut into sub-blanks with the same size, then the sub-blanks are machined into wedge blocks, the wedge blocks can be spliced together to form a wedge block assembly, and the diameter size of the cylindrical blank is increased by two times of the radial machining allowance on the basis of the diameter size of the wedge block assembly; the machining allowance in the radial direction comprises the cutting allowance delta 2 and # imgabs 0 #, L is the cutting seam width generated when the cylindrical blank is cut into the sub-blanks, theta is half of the center angle corresponding to each sub-blank, and # imgabs 1 #. According to the method, the machining allowance needing to be reserved in the machining process of the cylindrical blank is fully considered; particularly, the working allowance which needs to be reserved due to the influence of the kerfs after the cylindrical blank is cut into the sub-blanks is greatly improved, the calculation accuracy of the working allowance is greatly improved, material waste is reduced, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the field of presses, and in particular relates to a method for processing a wedge block of a double-sided press. Background Art

[0002] The two-sided top press and the six-sided top press are the two main equipment for ultra-high pressure synthesis of superhard materials. Compared with the six-sided top press, the two-sided top press has a simpler structure and lower equipment maintenance cost. At the same time, due to the up-and-down arrangement of the internal pressure heads of the two-sided top press, the pressure and temperature are easy to control and the internal uniformity of the pressed blank is good, which is conducive to the synthesis of large-diameter products.

[0003] The mold system in the double-sided press is a key part of the entire equipment. The mold system includes wedges. The wedges in the double-sided press are generally used in combination. The outer peripheral surface of the assembly formed by splicing the wedges in the same group together is a cylindrical surface, and the axial end of the wedge also has multiple inclined surfaces. The wedge is extremely difficult to process and manufacture due to its high material hardness, complex structure and strict precision requirements.

[0004] The wedges of the double-sided press are made of forged materials through machining. If the whole piece of billet is directly processed into a wedge, the part of the billet that needs to be removed is large, the material utilization rate is low, and it will cause resource waste. Therefore, it is generally necessary to cut the cylindrical billet into the required number of sub-billets, and then process each sub-billet into a wedge separately. This can save materials on the one hand, and save processing procedures and steps on the other hand, and improve processing efficiency.

[0005] When preparing cylindrical blanks, the blank size needs to be calculated, and in order to ensure processing quality, the size of the cylindrical blank needs to include sufficient machining allowance. However, in the past, in order to ensure sufficient machining allowance, the machining allowance was overestimated, resulting in the cylindrical blank size being too large, causing material waste and low processing efficiency. Summary of the invention

[0006] The object of the present invention is to provide a method for processing a wedge block of a double-sided top press, so as to solve the technical problem in the prior art that the size of a cylindrical blank used for processing the wedge block is difficult to accurately determine, resulting in material waste and low processing efficiency.

[0007] To achieve the above-mentioned purpose, the technical solution of the processing method of the double-sided top press wedge provided by the present invention is:

[0008] A method for processing a wedge block of a double-sided top press, wherein a cylindrical blank is cut into sub-blanks of equal size, and then the sub-blanks are processed into wedge blocks, and the wedge blocks are assembled together to form a wedge block assembly. The diameter size of the cylindrical blank is increased by twice the diameter size of the wedge block assembly, and the radial processing allowance includes a cutting allowance. Where L is the slit width when cutting the cylindrical blank into sub-blanks, θ is half of the central angle corresponding to each sub-blank,

[0009] As a further improvement, the sub-blanks are spliced ​​together for overall radial finishing, and the irregular parts on the sub-blank assembly are removed by radial finishing. After the irregular parts are removed, the circumferential surface of the sub-blank is continued to be finished as a whole, and the radial finishing allowance Δ is performed on the cylindrical surface of each sub-blank for overall finishing. 5 It is also part of the radial machining allowance. The machining amount of radial finishing is equal to the radial height of the irregular part and Δ 5 The sum of the radial finishing amount is greater than or equal to 0.1mm.

[0010] As a further improvement, the feed amount during radial finishing is Δ 进 , Δ 进 =Δ 5 +h, h is the radial height of the irregular part,

[0011] As a further improvement, the processing process of the wedge block includes a heat treatment step. Each sub-blank is rough-machined into a bevel and a groove before heat treatment, and a processing allowance of 0.2-1mm is left during the rough machining of the bevel and the groove. After heat treatment, fine machining is performed, and the processing allowance left during the rough machining of the bevel and the groove is eliminated by fine machining.

[0012] As a further improvement, before processing the bevel and the groove, a positioning and fixing hole is first processed on one axial end face of the sub-blank, and the sub-blank is fixedly mounted on the positioning base plate using a positioning bolt. The positioning and fixing hole includes a smooth hole positioning section and a threaded connection section. The positioning bolt has a positioning matching section that matches the smooth hole positioning section and a threaded matching section that matches the threaded connection section.

[0013] As a further improvement, the light hole positioning section is arranged close to the opening of the positioning and fixing hole, the threaded connection section is arranged away from the opening of the positioning and fixing hole, and the inner diameter of the light hole positioning section is larger than the inner diameter of the threaded connection section.

[0014] As a further improvement, a positioning hole is provided on the positioning bottom plate, the diameter of the positioning hole is equal to the diameter of the light hole positioning section, and the positioning matching section matches with the positioning hole at the same time.

[0015] As a further improvement, the radial machining allowance needs to be reduced by the coating thickness Δ 6 , Δ 6 The value range is 0.005-0.02mm.

[0016] As a further improvement, the processing of the wedge includes a heat treatment step. After the heat treatment, the two flat sides of each sub-blank parallel to its axial direction are finely processed. The amount of fine processing on the flat side is M, and the radial processing allowance also includes the processing allowance Δ required in the radial direction due to the influence of the fine processing of the flat side. 3 ,

[0017] As a further improvement, the axial height dimension of the cylindrical blank is increased by twice the axial machining allowance based on the axial height dimension of the wedge assembly, and the axial machining allowance includes the finishing allowance Δ of the cylindrical blank on the axial end face. 4 , Δ 4 Greater than or equal to 0.1 mm, the finishing of the axial end face is carried out after the sub-blank is heat treated.

[0018] The beneficial effect is that the processing method of the double-sided top press wedge provided by the present invention is a pioneering invention. The present invention fully considers the processing allowance required for the cylindrical blank during processing, especially the processing allowance required for cutting the cylindrical blank into sub-blanks due to the influence of the cutting seam, greatly improves the calculation accuracy of the processing allowance, reduces material waste and improves processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A side view of a cylindrical blank in one embodiment of a method for processing a wedge block of a two-sided top press in the present invention;

[0020] Figure 2 A schematic diagram of cutting a cylindrical blank in one embodiment of a method for processing a wedge block of a double-sided top press in the present invention;

[0021] Figure 3 It is a structural schematic diagram of a cylindrical blank being cut into sub-blanks in one embodiment of a method for processing a wedge block of a two-sided top press in the present invention;

[0022] Figure 4 It is a structural schematic diagram of a sub-blank assembly in which each sub-blank is spliced ​​into a sub-blank assembly in one embodiment of a method for processing a wedge block of a double-sided top press in the present invention;

[0023] Figure 5 A state diagram of clamping a sub-blank by a precision bench vise in one embodiment of a method for processing a wedge block of a double-sided top press in the present invention;

[0024] Figure 6It is a schematic diagram of the end surface structure of the blank after the positioning and fixing holes are processed in one embodiment of the processing method of the wedge block of the double-sided top press in the present invention;

[0025] Figure 7 It is a partial cross-sectional view of a sub-blank after the positioning and fixing holes are processed in one embodiment of the processing method of the double-sided top press wedge block of the present invention;

[0026] Figure 8 A top view of a sub-blank mounted on a positioning bottom plate in one embodiment of a method for processing a wedge block of a double-sided top press in the present invention;

[0027] Fig. 9 A side view of a sub-blank mounted on a positioning base plate in one embodiment of a method for processing a wedge block of a double-sided top press in the present invention;

[0028] Fig.10 A bottom view of a sub-blank mounted on a positioning bottom plate in one embodiment of a method for processing a wedge block of a double-sided top press in the present invention;

[0029] Fig.11 A partial cross-sectional view of a sub-blank mounted on a positioning bottom plate in one embodiment of a method for processing a wedge block of a two-sided top press in the present invention;

[0030] Fig.12 A top view of a sub-blank assembly installed on a flange in one embodiment of a method for processing a wedge block of a double-sided top press in the present invention;

[0031] Fig.13 A side view of a sub-blank assembly installed on a flange in one embodiment of a method for processing a wedge block of a double-sided top press in the present invention;

[0032] Fig.14 This is a bottom view of a sub-blank assembly installed on a flange in one embodiment of a method for processing a double-sided top press wedge in the present invention.

[0033] Description of reference numerals:

[0034] 1. Cylindrical blank; 2. Sub-blank; 21. First inclined surface; 22. Second inclined surface; 23. Third inclined surface; 24. First groove; 25. Second groove; 26. End top surface; 27. Flat side surface; 28. Irregular part; 3. Cutting slit; 4. Precision vise; 5. Positioning fixing hole; 51. Light hole positioning section; 52. Threaded connection section; 6. Positioning base plate; 61. Positioning hole; 7. Positioning bolt; 71. Positioning matching section; 72. Threaded matching section; 8. Flange. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with embodiments.

[0036] To solve the problems in the prior art, the basic concept of the present invention is to accurately control the size of the blank by accurately calculating the machining allowance, thereby reducing the amount of material removed during the machining process, reducing material waste and improving machining efficiency.

[0037] Specific embodiments of the processing method of the double-sided top press wedge provided by the present invention:

[0038] The processing method of the double-sided press wedge provided by the present invention mainly comprises the following steps:

[0039] Step 1: Cut a cylindrical blank of appropriate length and perform rough machining on the cylindrical blank using a lathe. The size of the cylindrical blank obtained after rough machining must include the machining allowance in the subsequent machining process. Figure 1 , define the diameter of the final wedge assembly as D, and the axial height as H. The size of the cylindrical blank obtained in this step is based on the size of the wedge assembly and doubles the radial machining allowance and axial machining allowance. The radial machining allowance is Δ 径 , the machining allowance in the axial direction is Δ 轴 , so the diameter of the cylindrical blank obtained in this step is D+2Δ 径 , the axial height is H+2Δ 轴 .

[0040] Step 2: Use a grinder to process the two end faces in the axial direction so that one of the end faces can be used for positioning in the subsequent processing. The machining allowance of a single end face in this step is Δ 1 , Δ 1 Greater than or equal to 0.1mm.

[0041] Step 3: Use the three-point positioning principle to determine the center coordinates of the workpiece. Figure 2 , the cylindrical blank obtained in step 1 is cut into three fan-shaped sub-blanks by using an electric spark wire cutting machine. The width of the slit is L. For the convenience of display, the slit is enlarged to obtain Figure 3 Take the center of the original cylindrical blank as point O, and the tip of one of the sub-blanks facing the center as point O', and connect points O and O' to get line OO'. Figure 4 The sub-blank assembly shown in the figure, the margin generated in this step is the cutting margin Δ 2 , the cutting allowance is the length of line OO′.

[0042] Draw a perpendicular line through point O to the end face of one of the sub-blanks, with the foot of the perpendicular being point E. The length of OE is half the width of the slit, so we can get Where θ is the angle value of ∠OO′E.

[0043] Extend OO', and the extension line intersects with the outer circle of the original cylindrical blank at point A, and O'A bisects the corresponding sub-blank. Because point O' is the center point of the sub-blank assembly, the central angle corresponding to each sub-blank is 360° divided by the number of sub-blanks. In this embodiment, there are three sub-blanks, so the central angle corresponding to each sub-blank is 120°. Set the intersection of the straight edge and the arc edge on the end face of the sub-blank as point C and point C' respectively. Because O'A bisects the corresponding sub-blank, ∠AO'C and ∠AO'C' are both 60°, and ∠OO'E is the vertex angle with one of ∠AO'C and ∠AO'C', so θ=60°. Substituting the value of θ into the above formula, we can get In other embodiments, if the number of sub-blanks is not three, θ=180° / number of sub-blanks.

[0044] Step 4, see attached Figure 5 , use a precision bench vise to clamp the sub-blank, use the table method to determine the midpoint of the arc edge at the end of the sub-blank, and then process two positioning and fixing holes on the axial end face of the sub-blank, see the attached Figure 6 The positioning and fixing hole is located on the line connecting the midpoint of the arc-shaped edge at the end of the sub-blank and the corresponding center of the circle, that is, on the line O′A in step three.

[0045] See attached Figure 7 The processed positioning and fixing hole includes a light hole positioning section and a threaded connection section. The light hole positioning section is arranged close to the hole opening of the positioning and fixing hole, and the threaded connection section is arranged away from the hole opening of the positioning and fixing hole. The inner diameter of the light hole positioning section is larger than the inner diameter of the threaded connection section.

[0046] Step 5, see attached Figure 8 , Attachment Fig. 9 and attached Fig.10 The sub-blank processed in step 4 is fixed on the positioning base plate by using positioning bolts. The positioning base plate is fixed on the workbench of the five-axis machining center by bolts and nuts, and one side surface of the positioning base plate is used as the positioning reference surface.

[0047] The first bevel, the second bevel and the third bevel are roughly machined by milling, and the first groove and the second groove are machined at the same time. The above bevels and grooves have a machining allowance of 0.2-1mm after this rough machining to facilitate subsequent finishing operations.

[0048] The positioning bolts in this step play the role of positioning and fixing at the same time. Fig.11The positioning bolt specifically includes a positioning matching section and a thread matching section, wherein the positioning matching section is threadless and matches with the light hole positioning section of the positioning fixing hole to radially position the sub-blank, and the thread matching section matches with the threaded connection section of the positioning fixing hole. The axial length of the positioning matching section is greater than the axial length of the light hole positioning section. The positioning base plate is provided with a positioning hole for the positioning bolt to pass through. The positioning matching section also matches with the positioning hole to achieve radial positioning between the positioning bolt and the positioning base plate, thereby achieving positioning between the sub-blank and the positioning base plate. The positioning hole is a countersunk hole, which is convenient for installing the positioning bolt.

[0049] Step six, heat treatment is performed on the sub-blank, and the specific heat treatment project is vacuum quenching treatment, so that the hardness of the sub-blank reaches HRC50-70.

[0050] Step seven, use a reamer to fine-tune the inner wall of the light hole positioning section in the positioning and fixing hole on the sub-blank after quenching. Since the sub-blank will inevitably produce a certain degree of deformation during the heat treatment process, this step can effectively ensure that the subsequent processing still has good processing accuracy.

[0051] Step eight, again install the sub-blank on the workbench of the five-axis machining center, and perform finish machining on the first bevel, the second bevel, the third bevel and the inner wall surfaces of the first groove and the second groove. This finish machining eliminates the machining allowance left in step five.

[0052] In this step, the two flat side surfaces of the sub-blank that were not rough-machined in step 5 and the top surface of the end axially away from the positioning base plate need to be fine-machined. This fine-machining process is to eliminate the influence of deformation caused by heat treatment on the accuracy. The fine-machining amount of these positions is smaller than that of the bevel and groove, generally less than 0.1mm. After this step of processing, the machining allowance in the radial direction is Δ 3 , Δ 3 With Δ 2 The calculation method is similar, that is, Where M is the amount of finishing of the two flat sides that were not rough-machined in step five.

[0053] In this step, the machining allowance generated in the axial direction is Δ 4 , Δ 4 The value is the amount of finishing performed on the top surface of the end axially away from the positioning base plate.

[0054] Step 9: Splice the three sub-blanks together to form a sub-blank assembly, see attached Fig.12 , Attachment Fig.13 And attached Fig.14The sub-blank assembly is fixedly mounted on the flange of the lathe by means of positioning bolts, and then the sub-blank assembly is subjected to overall radial finishing, and irregular parts on the sub-blank assembly are removed by radial finishing.

[0055] Referring to the attached figure, draw a circle with O' as the center and O'A as the radius. The intersection of the circle and O'C is point B. The part corresponding to the circumferential direction of the line segment BC is the irregular part that needs to be removed. Only after this part is removed can a regular cylindrical sub-blank assembly be obtained. The radial height of the irregular part is set to h, and the value of h is equal to the length of the line segment BC. The calculation steps of h are as follows:

[0056]

[0057] However, since point A was not machined during the process of removing the irregular parts on the sub-blank assembly, in order to ensure the machining accuracy of the entire outer circumference, the cutting tool is continued to perform overall finishing of the circumference of the sub-blank after removing the irregular parts on the sub-blank assembly. The machining amount of overall finishing of the circumference of the sub-blank forms the radial finishing allowance Δ 5 , Δ 5 It is also part of the radial machining allowance.

[0058] In this step, the total feed amount Δ for radial finishing is 进 =h+Δ 5 , h is small, generally not exceeding 0.1, so the total feed amount of radial finishing needs to be greater than or equal to 0.1mm.

[0059] Step 10: The fitter grinds all edges and corners into arc shapes.

[0060] Step 11: Cr is plated on the surface of the sub-blank. The thickness of the coating is in the range of 0.005-0.02 mm. The thickness of the coating is defined as Δ 6 After this step is completed, the finished wedge block is obtained.

[0061] In summary, the diameter of the cylindrical blank obtained in step 1 is D+2Δ 径 =D+2(Δ 2 +Δ 3 +Δ 5 -Δ 6 ), the axial height is H+2Δ 轴 =D+2(Δ 1 +Δ 4 -Δ 6 ). In the actual production process, appropriate values ​​can be selected as needed to prepare and process the blanks.

[0062] The solution of the present invention is further described below with reference to examples from an actual production process.

[0063] In this case, the combined diameter of the finished wedge is D = 235 mm, H = 150 mm. The processing volume Δ in the processing structure 1 Take 0.1mm, L take 0.2mm, M take 0.1mm, Δ 4 Take 0.1mm, Δ 6 Take 0.02mm. Substituting the value of L into the formula, we can get Δ 2 =0.1155mm, substituting the value of M into the formula, we can get Δ 3 =0.1155mm.

[0064] Δ 5 The value of needs to be determined according to h. For the convenience of calculation, in this case, Δ 5 Take 0.1mm. Then Δ 径 =0.311mm, substituting each value into the formula for solving h, we get h=0.0577mm, and it can be seen that the value of h is less than 0.1mm. In step nine, in order to facilitate the calculation of the feed amount, the total feed amount of radial finishing Δ 进 The value is 0.1mm, then Δ 5 The final value of is 0.0423mm. 5 The value itself is much smaller than the diameter of the wedge assembly, so in Δ 5 The effect of the value change on h is very small, so h is no longer recalculated.

[0065] Substitute the radial allowances into the radial allowance calculation formula again, and the final radial allowance Δ 径 =0.2533mm, rounded to 0.25mm. The final axial allowance Δ 轴 =Δ 1 +Δ 4 -Δ 6 =0.18mm.

[0066] In step one, the original cylindrical blank needs to be obtained by rough turning or the like. The outer diameter of the cylindrical blank needs to be processed to 235.5 mm, and the axial height needs to be processed to 150.36 mm. In view of the fact that the precision requirement of rough turning can be lower, the axial height can be rounded up to 150.4 mm.

[0067] The blank is then processed according to the above steps to eventually obtain a finished wedge block with high dimensional accuracy. Moreover, since the calculation accuracy of the excess is high, less material is removed during the processing, which can reduce material waste and improve processing efficiency.

[0068] In the above embodiments, the surface treatment method of the wedge block is electroplating, which will form a plating layer with a thickness on the surface of the sub-blank. In other embodiments, if no surface treatment is performed or the surface treatment is performed in other ways, Δ can be adjusted according to actual needs. 6 The value of is not described here.

[0069] In the above embodiment, the finishing of the axial end surface only exists at one end of the axial direction, so when calculating the original cylindrical blank, the axial height dimension can be reduced by one Δ 4 At this time, the axial height dimension of the cylindrical blank is 150.3 mm.

[0070] In the above embodiments, the positioning bolts can be used to fix the sub-blank and to position the sub-blank, thereby making the structure of the sub-blank and the positioning base plate simpler. In other embodiments, a positioning structure, such as a positioning pin, can also be provided on the positioning base plate, and a pin hole that cooperates with the positioning pin can be processed on the sub-blank accordingly.

[0071] In the above embodiments, the inner diameter of the light hole positioning section is larger than the inner diameter of the threaded connection section, which can increase the contact area between the light hole positioning section and the positioning matching section and improve the positioning effect. In other embodiments, the positions of the light hole positioning section and the threaded connection section can also be interchanged, and the inner diameter of the light hole positioning section can be smaller than the inner diameter of the threaded connection section.

[0072] Placing the finishing step after the heat treatment can effectively reduce the dimensional deviation of the material caused by deformation during the heat treatment process. However, in other embodiments, if the sub-blank is not subjected to heat treatment, for example, the sub-blank is treated by nitriding, the finishing step can be advanced.

[0073] In the above embodiment, Δ 进 The value of 0.1 mm can facilitate processing on the one hand, and on the other hand, the sub-blank does not need to undergo much finishing at point A in the figure, thus further reducing the processing amount and improving processing efficiency. 5 The value of 0.1mm is used to calculate the radial dimension of the cylindrical blank.

[0074] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for processing a wedge block of a double-sided top press, characterized in that: The cylindrical blank is cut into sub-blanks of equal size, and then the sub-blanks are processed into wedges. The wedges are assembled together to form a wedge assembly. The diameter of the cylindrical blank is increased by twice the diameter of the wedge assembly, and the radial machining allowance includes the cutting allowance Δ2. Where L is the slit width when cutting the cylindrical blank into sub-blanks, θ is half of the central angle corresponding to each sub-blank, 2. The method for processing a double-sided press wedge according to claim 1, characterized in that: The sub-blanks are spliced ​​together for overall radial finishing, and radial finishing is used to remove irregular parts on the sub-blank assembly. After removing the irregular parts, the tool is continued to perform overall finishing on the circumferential surface of the sub-blank. The radial finishing allowance Δ5 for overall finishing of the cylindrical surface of each sub-blank is also part of the radial machining allowance. The radial finishing amount is equal to the sum of the radial height of the irregular part and Δ5, and the radial finishing amount is greater than or equal to 0.1mm.

3. The method for processing a double-sided press wedge according to claim 2, characterized in that: The feed amount during radial finishing is Δ 进 , Δ 进 =Δ5+h, h is the radial height of the irregular part, 4. The method for processing a double-sided press wedge according to any one of claims 1 to 3, characterized in that: The processing process of the wedge block includes a heat treatment step. Each sub-blank is roughly processed into a bevel and a groove before heat treatment. A processing allowance of 0.2-1mm is left during rough processing of the bevel and the groove. After heat treatment, fine processing is performed to eliminate the processing allowance left during rough processing of the bevel and the groove.

5. The method for processing a double-sided press wedge according to claim 4, characterized in that: Before processing the inclined surface and the groove, a positioning and fixing hole is first processed on one axial end face of the sub-blank, and the sub-blank is fixedly mounted on the positioning base plate using a positioning bolt. The positioning and fixing hole includes a light hole positioning section and a threaded connection section. The positioning bolt has a positioning matching section that matches the light hole positioning section and a threaded matching section that matches the threaded connection section.

6. The method for processing a double-sided press wedge according to claim 5, characterized in that: The light hole positioning section is arranged close to the opening of the positioning and fixing hole, and the threaded connection section is arranged far away from the opening of the positioning and fixing hole. The inner diameter of the light hole positioning section is larger than the inner diameter of the threaded connection section.

7. The method for processing a double-sided press wedge according to claim 6, characterized in that: A positioning hole is arranged on the positioning bottom plate, the diameter of the positioning hole is equal to the diameter of the light hole positioning section, and the positioning matching section matches with the positioning hole at the same time.

8. The method for processing a double-sided press wedge according to any one of claims 1 to 3, characterized in that: The radial machining allowance needs to be subtracted from the coating thickness Δ6, and the value range of Δ6 is 0.005-0.02mm.

9. The method for processing a double-sided press wedge according to any one of claims 1 to 3, characterized in that: The processing of the wedge includes a heat treatment step. After the heat treatment, the two flat sides of each sub-blank parallel to its axial direction are finely processed. The amount of fine processing on the flat side is M. The radial processing allowance also includes the processing allowance Δ3 that needs to be left in the radial direction due to the influence of the fine processing of the flat side.

10. The method for processing a double-sided press wedge according to any one of claims 1 to 3, characterized in that: The axial height dimension of the cylindrical blank is increased by twice the axial machining allowance based on the axial height dimension of the wedge assembly. The axial machining allowance also includes the finishing allowance Δ4 of the cylindrical blank on the axial end face. Δ4 is ​​greater than or equal to 0.1 mm. The finishing of the axial end face is carried out after the sub-blank is heat treated.

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