CN218873418U

CN218873418U - Cutting processing die

Info

Publication number: CN218873418U
Application number: CN202221292723.XU
Authority: CN
Inventors: 谢海梁
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2023-04-18
Anticipated expiration: 2032-05-26

Abstract

The utility model discloses a cutting process mould, including last mould and lower mould. The lower die comprises a lower base, a workpiece placing table arranged on the lower base and used for placing a workpiece, and a sliding side cutting assembly. The upper die comprises an upper base, a positioning part arranged on the upper base and a driving wedge used for driving the sliding side-cutting assembly to perform sliding side-cutting. The sliding side cutting assembly comprises a wedge sliding component, a reset component for driving the wedge sliding component to reset and a cutting head linked with the wedge sliding component. The to-be-cut part of the to-be-processed workpiece is downwards arranged on the workpiece placing table, the cutting head faces the to-be-cut part of the to-be-processed workpiece, when the upper die is combined with the lower die, the positioning part presses the to-be-processed workpiece to fix the position of the to-be-processed workpiece, the wedge is driven to apply force to the wedge sliding part to enable the wedge sliding part to slide towards the to-be-processed workpiece, and therefore the cutting head is driven to cut the redundant part of the to-be-processed workpiece, and the cut surface of the processed workpiece is smooth.

Description

Cutting processing die

Technical Field

The utility model relates to a mould equipment field, in particular to cutting process mould.

Background

The mold is a tool for integrally forming a workpiece by injecting a material for molding, and the physical state of the material is changed in the mold to thereby form the workpiece. However, because of the problems of the production process, the bottom surface of the workpiece formed by the existing die is easy to have barbs, and the opening is uneven.

For example, in the production process of water meter cases, the water meter case half shells are generally manufactured by a casting process and then welded to form a whole. Its one side that is used for half shell relative connection after the shaping of water meter shell half shell is not level and smooth enough, needs to carry out cutting process in order to reach leveling to the work piece with a cutting process mould, carries out the relative welding of two half shells again.

The existing cutting processing die has two types, one type is an agnail for cutting a workpiece from the vertical direction, the other type is an agnail for cutting the workpiece from the horizontal direction (side cutting), wherein a cutter of the side cutting die can surround the workpiece to cut the workpiece, and the cutting effect is better. The side cutting die is characterized in that a cutter is arranged on an upper die/a lower die of the side cutting die and is driven to move towards a workpiece through a guide piece; for example, the utility model patent with publication number CN211438390U discloses a cutting die, its upper die is equipped with part seat, blade holder frame, arranges the blade holder in the blade holder frame in, and the lower mould is equipped with the guide block, and the blade holder is equipped with the trapezoidal tooth that is located its outside, the cutter towards the part, and the guide block also is equipped with blade holder complex trapezoidal tooth. When a workpiece is cut, the part seat fixes the part, the upper die moves downwards, and the trapezoidal teeth on the inner side of the guide block and the trapezoidal teeth on the outer side of the tool apron are matched in the tool apron frame, so that the tool apron and the cutter move towards the part and the rough edges on the edge of the part are cut. But long-term the use, the blade holder can rub with the trapezoidal tooth of guide block and damage, needs often to change, and need reset the blade holder after having cut a part, carries out the cutting of next part again, reduces the cutting efficiency of mould. In view of this, the present invention has been made to solve the above problems, and further improves a cutting die.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cutting process mould, its reset unit drive slide wedge sliding part and crop resets, need not artifical adjustment crop position, improves cutting efficiency.

The utility model provides a cutting process mould, including last mould and lower mould. The lower die comprises a lower base, a workpiece placing table which is convexly arranged on the lower base and used for placing a workpiece to be machined, and a sliding side cutting assembly which is arranged on the periphery of the workpiece placing table and corresponds to the outer side of the workpiece to be machined. The upper die comprises an upper base, a positioning part and a driving wedge, wherein the positioning part is arranged on the upper base and used for pressing to fix a workpiece to be processed when the upper die is combined with the lower die, and the driving wedge is used for driving the sliding side-cutting assembly to perform sliding side-cutting. The sliding side cutting assembly comprises a wedge sliding part, a reset part and a cutting head, wherein the wedge sliding part and the driving wedge form a wedge mechanism, the reset part is used for driving the wedge sliding part to reset, and the cutting head is linked with the wedge sliding part. The to-be-cut part of the to-be-processed workpiece is downwards installed on the workpiece placing table, the cutting head faces the to-be-cut part of the to-be-processed workpiece, when the upper die is combined with the lower die, the positioning part exerts pressure on the to-be-processed workpiece to fix the position of the to-be-processed workpiece, the driving wedge is used for driving the wedge sliding part to apply force to enable the wedge sliding part to slide towards the to-be-processed workpiece, and therefore the cutting head is driven to cut the to-be-processed workpiece.

Preferably, the sliding side-cutting assembly is provided with a plurality of groups, and the groups are arranged around the workpiece placing table and are opposite to all sides of the workpiece to be processed.

Preferably, the slide wedge sliding part comprises a guide rail fixed on the lower base and a slide wedge, the bottom of the slide wedge is provided with a sliding groove matched with the guide rail, and the slide wedge is installed on the guide rail and moves relative to the guide rail under the matching of the guide rail and the sliding groove.

Preferably, the cutting head is fixed to the top of the sliding wedge, and the cutting head is matched with the shape of the opposite face of the workpiece to be machined.

Preferably, the restoring means includes a fixing portion, a restoring guide rod, and a restoring spring mounted on the guide rod. The fixing portion is fixed to one side of the sliding wedge, which is far away from the workpiece placing table. One end of the reset guide rod penetrates through the fixing part from one side of the fixing part, which is far away from the workpiece placing table, towards the direction of the sliding wedge, penetrates out of the fixing part and is connected and fixed with the sliding wedge, the other end of the reset guide rod is located on one side of the fixing part, which is far away from the workpiece placing table, and is abutted against one end of the reset spring, and the other end of the reset spring is abutted against one side of the fixing part, which is far away from the workpiece placing table. When the sliding wedge slides towards the direction of the workpiece placing table, the sliding wedge drives the reset guide rod to move so as to extrude the reset spring to generate reset elastic force; when the driving wedge is far away from the lower die, the reset guide rod drives the sliding wedge to be far away from the workpiece placing table under the action of reset elasticity.

Preferably, the driving wedge is provided with a position avoiding groove opposite to the position of the reset guide rod.

Preferably, the positioning part is provided with an elastic mold core component protruding towards the direction of the workpiece to be processed, and the elastic mold core component is used for elastically jacking the workpiece to be processed. The elastic mold core part comprises a mold core and an elastic pressing piece which is pressed against the back of the mold core. The fretwork is equipped with on the location portion with the mounting groove of mold core adaptation, deviating from of mounting groove be equipped with the overlap joint position on the one end lateral wall of lower mould, the mold core deviate from be equipped with on the one end lateral wall of lower mould with the overlap joint portion that the overlap joint position matches, the mold core is followed deviating from of mounting groove the one side of lower mould is packed into in the mounting groove, overlap joint portion overlap joint is in order to inject in the overlap joint position the mold core can not to lower mould direction motion and can be dorsad the direction motion of lower mould, overlap joint portion overlap joint is in when the overlap joint position, the mold core is followed in the mounting groove to lower mould direction protrusion.

Preferably, the positioning part is a positioning die frame, and a containing groove matched with the outer surface of the workpiece to be processed is formed in the positioning die frame. The upper part of the workpiece placing table is a supporting seat matched with the inner surface of the workpiece to be processed. The supporting seat and the accommodating groove are combined to form a workpiece cavity for accommodating and positioning a workpiece to be machined, and the mounting groove is located in the accommodating groove.

Preferably, the upper base is provided with a mold frame mounting groove matched with the positioning mold frame, and the positioning mold frame is fixed in the mold frame mounting groove through bolt connection and keeps a movable gap in the direction of the movement of the upper mold. The back of the upper base is provided with a plurality of through holes leading to the die frame mounting grooves, and the elastic pressing piece extends into the die core from the through holes. The upper die is provided with a second elastic pressing piece which extends into the back of the positioning die frame from the through hole and applies force to the positioning die frame. At the moment that the positioning die frame begins to extrude the machined workpiece, the positioning die frame can receive the reaction force of the machined workpiece and move towards the direction of the die frame mounting groove, and meanwhile, the second elastic pressing piece is extruded to generate reset elastic force, so that the machined workpiece is prevented from being damaged due to overlarge impact force. Then the positioning die frame moves towards the processing workpiece again under the action of the reset elastic force and fastens the processing workpiece in the workpiece cavity.

Preferably, the elastic pressing piece is a nitrogen spring, and the second elastic positioning piece is a spring column.

Preferably, the lower base and the upper base are provided with limiting holes, the limiting holes penetrate through the bases, the limiting holes of the upper base correspond to the limiting holes of the lower base and are connected through limiting rods, and the upper die can move relative to the lower die just under the action of the limiting rods.

The utility model has the advantages that:

1. when the work piece cutting, the slide wedge drives the guide bar that resets and moves and produce the elasticity that resets with extrusion reset spring when placing a platform orientation slip to the work piece, and when the lower mould was kept away from to the drive wedge, the guide bar that resets drove the slide wedge under the effect of the elasticity that resets and keep away from the work piece and place the platform, realizes that slide wedge sliding part and crop reset, need not manual adjustment crop position, improves cutting efficiency.

1. The utility model discloses a set up elasticity mold core part on location framed, the work piece that the mold core extrusion processing finishes just lets the work piece stop at the work piece and places the platform under the effect of elasticity pressing piece, conveniently collects the work piece that the cutting finishes.

2. In the processing process, the die core extrudes the workpiece under the action of the elastic pressing piece to enable the workpiece to be fastened in the workpiece cavity, so that the problem of inaccurate cutting position caused by the movement of the workpiece is avoided; meanwhile, the multiple groups of sliding side cutting assemblies perform side cutting on the cutting part of the workpiece, so that the cut surface of the machined workpiece is flat.

Drawings

Fig. 1 is a top view of a lower die in an embodiment of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view A-A of FIG. 1;

fig. 3 is a top view of the upper mold in the embodiment of the present invention;

fig. 4 is a cross-sectional view B-B of fig. 3.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the drawings, and are merely for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, terms such as "mounted," "connected," and "fixed" are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected or in mutual relationship between two elements unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or indirectly contacting the first feature and the second feature through intervening media, and the first feature "on", "above" or "above" the second feature may be directly or obliquely above the second feature or may merely indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 4, the embodiment of the cutting processing die of the present invention is provided:

a cutting processing die comprises an upper die and a lower die. The lower die comprises a lower base 20, a workpiece placing table 21 protruding on the lower base and used for placing a workpiece to be machined, and a sliding side cutting assembly arranged on the periphery of the workpiece placing table 21 and corresponding to the outer side of the workpiece to be machined. The upper die comprises an upper base 10, a positioning part arranged on the upper base 10 and used for pressing to fix a workpiece to be processed when the upper die is combined with the lower die, and a driving inclined wedge 11 used for driving the sliding side cutting assembly to perform sliding side cutting. The sliding side cutting assembly comprises a wedge sliding part forming a wedge mechanism with the driving wedge mechanism 11, a reset part for driving the wedge sliding part to reset and a cutting head 22 linked with the wedge sliding part. A to-be-cut portion of a workpiece to be machined is mounted on the workpiece placing table 21 with the cutting head 22 facing the to-be-cut portion of the workpiece to be machined. When the upper die and the lower die are combined, the positioning part presses on the workpiece to be processed to fix the position of the workpiece, the wedge 11 is driven to apply force to the wedge sliding part to enable the wedge sliding part to slide towards the direction of the workpiece to be processed, and therefore the cutting head 22 is driven to cut the redundant part of the workpiece to be processed, and the cut surface of the processed workpiece is smooth.

As shown in fig. 1 and 2, the sliding side cutting assemblies are provided in four sets, and are disposed around the workpiece placing table 21, opposite to the respective sides of the workpiece to be processed. The slide wedge slide member includes a guide rail 23 fixed to the lower base 20 and a slide wedge 24. The bottom of the slide wedge 24 is provided with a slide groove 241 matched with the guide rail 23, and the slide wedge 24 is installed on the guide rail 23 and moves relative to the guide rail 23 under the matching of the guide rail 23 and the slide groove 241. A cutting head 22 is fixed on top of the sliding wedge 24, the cutting head 22 matching the shape of the opposite face of the workpiece to be machined. The return means includes a fixing portion 25, a return guide rod 26, and a return spring 27 mounted on the guide rod 26. The fixing portion 25 is provided with a hole for passing the return guide rod 25 therethrough and the fixing portion 25 is mounted on the side of the slide wedge 24 away from the workpiece placing table 21. One end of the return guide rod 26 penetrates the fixing portion 25 from the side of the fixing portion 25 away from the workpiece placing table 21 toward the direction of the slide wedge 24 and penetrates out of the fixing portion 25 to be connected and fixed to the slide wedge 24, the other end of the return guide rod 26 is located on the side of the fixing portion 25 away from the workpiece placing table 21 and abuts against one end of the return spring 27, and the other end of the return spring 27 abuts against the side of the fixing portion 25 away from the workpiece placing table 21. Here, one end of the return spring 27 is abutted against the return guide rod 26 by tightening a nut at the end of the return guide rod 26. Of course, it is also possible to provide a circumferential protruding abutment ring on the return guide rod 26, which may be integrally formed with the return guide rod or welded or screwed in abutment with the return spring 27.

When the sliding wedge 24 slides towards the workpiece placing table 21, the reset guide rod 26 is driven to move to extrude the reset spring 27 to generate reset elastic force; when the driving wedge 11 is far away from the lower die, the reset guide rod 26 drives the sliding wedge 24 to be far away from the workpiece placing table 21 under the action of the reset elastic force, so that the resetting of the wedge sliding part 24 and the cropping head 22 is realized, the position of the cropping head 22 does not need to be manually adjusted, and the cutting efficiency is improved.

As shown in fig. 3, the driving cam 11 is provided with a space avoiding groove 111 facing the position of the return guide rod 26. The positioning part is a positioning die frame 12, and is provided with a containing groove 121 adapted to the outer surface of the workpiece to be processed. The upper part of the workpiece placing table 21 is a supporting seat 211 adapted to the inner surface of the workpiece to be machined. The support seat 211 and the receiving groove 121 are combined to form a workpiece cavity for receiving and positioning a workpiece to be processed. The positioning mold frame 12 is provided with an elastic mold core component protruding towards the workpiece to be processed, and the elastic mold core component is used for elastically jacking and pressing the workpiece to be processed. The elastic core part comprises a core 13 and an elastic pressing piece 14 pressed against the back of the core 13. The positioning mold frame 12 is hollowed with a mounting groove 122 adapted to the mold core 13, and specifically, the mounting groove 122 is located in the receiving groove 121. Be equipped with overlap joint position 123 on the one end lateral wall that deviates from the lower mould of mounting groove 121, be equipped with the overlap joint portion 131 that matches with overlap joint position 123 on the one end lateral wall that deviates from the lower mould of mold core 13, the mold core 13 is packed into mounting groove 122 from the one side that deviates from the lower mould of mounting groove 122 in, overlap joint portion 131 overlap joint is on overlap joint position 123 can not follow the direction motion that breaks away from the lower mould from mounting groove 122 completely to inject mold core 13, overlap joint portion overlap joint is when on overlap joint position 123, mold core 13 is protruding to the lower mould direction from mounting groove 122. In the processing process, the die core 13 extrudes the workpiece under the action of the elastic pressing piece 14 to ensure that the workpiece is fastened in the workpiece cavity, so that the problem of inaccurate cutting position caused by workpiece movement is avoided. After the processing is finished, the die core 13 extrudes the workpiece under the action of the elastic pressing piece 14, and the workpiece is stopped on the workpiece placing table 21, so that the cut workpiece is convenient to collect.

As shown in fig. 4, a mold frame mounting groove 15 adapted to the positioning mold frame 12 is formed on the upper base 10, and the positioning mold frame 12 is fixed in the mold frame mounting groove 15 by a bolt 151. The front end face of the positioning die frame 12 facing the lower die is provided with a plurality of counter bores, the counter bores penetrate through the back of the positioning die frame 12, the upper base 10 is provided with connecting holes corresponding to the counter bores, the bolts 151 penetrate into the connecting holes from the counter bores, threaded ends of the bolts penetrate out of the connecting holes to be connected and fixed with nuts, and the heads of the bolts 151 are arranged in the counter bores. After the bolt 151 is locked with the nut, under the action of the second elastic pressing piece 16, the front end of the positioning mold frame 12 protrudes out of the mold frame mounting groove 15, and a movable gap is formed between the bottom of the positioning mold frame 12 and the mold frame mounting groove 15. The back of the upper base 10 is provided with a plurality of through holes leading to the mold frame installation grooves 15, and the elastic pressing pieces 14 extend into the back of the mold core 13 from the through holes. The upper die is provided with a second elastic pressing piece 16, and the second elastic pressing piece 16 extends into the back of the positioning die frame 12 from the through hole and applies force to the positioning die frame 12. At the moment that the positioning die frame 12 begins to extrude the machined workpiece, the positioning die frame 12 can receive the reaction force of the machined workpiece and move towards the die frame installation groove 15, meanwhile, the second elastic pressing piece 16 is extruded to generate reset elastic force, the machined workpiece is prevented from being damaged due to overlarge impulsive force, then the positioning die frame 12 fastens the machined workpiece in the workpiece cavity under the action of the reset elastic force, and the workpiece is prevented from moving in the machining process.

As shown in fig. 1 and 3, the lower base 20 and the upper base 10 are provided with limiting holes, the limiting holes penetrate through the bases, the positions of the limiting holes 17 of the upper base correspond to the limiting holes 28 of the lower base and are connected through limiting rods, and the upper die can be opposite to the lower die under the action of the limiting rods and can move relative to the lower die under the driving of external power. The external power may be a cylinder, but is not limited thereto.

Specifically, the elastic pressing member 14 is provided as a nitrogen spring, and the second elastic positioning member 16 is a spring column. The elastic pressing member 14 and the second elastic positioning member 16 may be fixed to the upper base 10 by connecting a back plate through the back of the upper base 10.

The workpiece to be processed in the embodiment is a water meter shell half shell, the supporting seat 211 is matched with the inner surface of the half shell in shape, the accommodating groove 121 is matched with the outer surface of the half shell in shape, and the downward surface of the water meter shell half shell is cut by combining the upper die and the lower die to be smooth.

In the description of the present specification, reference to descriptions pertaining to "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in suitable combinations and subcombinations of the various embodiments or examples and features of the various embodiments or examples described herein may be combined and combined by one skilled in the art without conflict with one another.

The above only is the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and all the equivalent structures that are used in the content of the specification and the attached drawings of the present invention can be changed or directly or indirectly used in other related technical fields, and all the same principles are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a cutting process mould, includes mould and lower mould, its characterized in that: the lower die comprises a lower base, a workpiece placing table which is convexly arranged on the lower base and used for placing a workpiece to be processed, and a sliding side cutting assembly which is arranged on the periphery of the workpiece placing table and corresponds to the outer side of the workpiece to be processed; the upper die comprises an upper base, a positioning part and a driving wedge, wherein the positioning part is arranged on the upper base and is used for pressing to fix a workpiece to be processed when the upper die is combined with the lower die, the driving wedge is used for driving the sliding side cutting assembly to perform sliding side cutting, and the sliding side cutting assembly comprises a wedge sliding part, a reset part and a cutting head, the wedge sliding part and the driving wedge form a wedge mechanism, the reset part is used for driving the wedge sliding part to reset, and the cutting head is linked with the wedge sliding part; the to-be-machined part of the workpiece to be machined is downwards installed on the workpiece placing table, the cutting head faces the to-be-machined part of the workpiece to be machined, when the upper die is combined with the lower die, the positioning part exerts pressure on the workpiece to be machined to fix the position of the workpiece, the driving wedge applies force to the wedge sliding part to enable the wedge sliding part to slide towards the direction of the workpiece to be machined, and therefore the cutting head is driven to cut the workpiece to be machined.

2. The cutting tool of claim 1 wherein the cam slide member comprises a rail and a slide cam slidably mounted on the rail.

3. The cutting and processing die of claim 2, wherein the cutting head is fixedly connected to the top of the sliding wedge, and the cutting head is matched with the shape of the opposite surface of the workpiece to be processed.

4. The cutting and processing die according to claim 2, wherein the reset member includes a fixing portion, a reset guide rod and a reset spring mounted on the guide rod, the fixing portion is located on one side of the slide wedge away from the workpiece placing table, one end of the reset guide rod penetrates through the fixing portion from the side of the fixing portion away from the workpiece placing table toward the direction of the slide wedge and penetrates out from the fixing portion to be connected and fixed with the slide wedge, the other end of the reset guide rod is located on one side of the fixing portion away from the workpiece placing table and abuts against one end of the reset spring, the other end of the reset spring abuts against one side of the fixing portion away from the workpiece placing table, and the slide wedge slides towards the workpiece placing table to drive the reset guide rod to move so as to press the reset spring to generate a reset elastic force.

5. The cutting processing die according to claim 4, wherein the driving wedge is provided with a position avoiding groove opposite to the position of the reset guide rod.

6. The cutting processing die according to any one of claims 1 to 5, wherein the sliding side cutting assemblies are provided in plural sets, disposed around the workpiece placing table, opposite to respective sides of the workpiece to be processed.

7. The cutting-processing die according to any one of claims 1 to 5, wherein the positioning portion is provided with an elastic die core part protruding in a direction toward the workpiece to be processed for elastically pressing the workpiece to be processed.

8. The cutting processing die according to claim 7, wherein the elastic die core part comprises a die core and an elastic pressing piece which is pressed against the back of the die core, a hollow mounting groove which is matched with the die core is formed in the positioning part, a lapping position is arranged on the side wall of one end of the mounting groove, which is far away from the lower die, a lapping part which is matched with the lapping position is arranged on the side wall of one end of the die core, which is far away from the lower die, the die core is installed in the mounting groove from one surface of the mounting groove, which is far away from the lower die, the lapping part is lapped on the lapping position to limit that the die core can not move towards the lower die direction but can move towards the direction away from the lower die, and when the lapping part is lapped on the lapping position, the die core protrudes towards the lower die direction from the mounting groove.

9. The cutting die according to claim 8, wherein the positioning portion is a positioning die frame having a receiving groove adapted to an outer surface of the workpiece to be machined, the upper portion of the workpiece placing table is a supporting seat adapted to an inner surface of the workpiece to be machined, the supporting seat and the receiving groove form a workpiece cavity for receiving and positioning the workpiece to be machined, and the mounting groove is located in the receiving groove.

10. The cutting processing die according to claim 9, wherein a die frame mounting groove adapted to the positioning die frame is formed in the upper base, the positioning die frame is fixed in the die frame mounting groove through a bolt, a movable gap is reserved in the moving direction of the upper die, a plurality of through holes leading to the die frame mounting groove are formed in the back surface of the upper base, the elastic pressing piece extends into the die core from the through holes, and a second elastic pressing piece extends into the back of the positioning die frame from the through holes to apply force to the positioning die frame.