Die cutter for metal cutting

Abstract

The utility model discloses a threading die cutter for metal cutting, which comprises a threading die seat, a plurality of cutting components, a cover plate and a hole sealing component, the end face of the threading die seat is provided with a plurality of through chip grooves, and the cutting components are arranged among the chip grooves and connected with the threading die seat through first screws. The cover plate is arranged on the lower surface of the threading die base and connected with the threading die base through second screws, a first guide hole is formed in the middle of the cover plate, a plurality of second guide holes are evenly formed in the periphery of the cover plate and connected with the chip groove, and the hole sealing assembly is detachably arranged in the chip groove; the device has the advantages that the first guide hole formed in the cover plate can guide the metal rod piece, and external threads can be conveniently machined or corrected; the second guide hole guides the generated metal chippings, so that the metal chippings are obliquely discharged towards the outer side, and the situation that the subsequent machining or correcting process of the metal bar is affected by vertical discharging is avoided; the detachable hole sealing assembly is used when the external threads are corrected, a small amount of generated tiny chippings are collected so as to be discharged in a centralized mode subsequently, and the cleaning difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cutters, in particular to a die cutter for metal cutting. Background Art

[0002] A die cutter is a tool used to process or correct external threads. It is equivalent to a nut with very high hardness. The radius of the internal screw hole of different models is set to a corresponding fixed size. Chinese Patent Publication No.: CN219425862U discloses a die cutter for metal cutting, including a die seat and a mounting assembly. The die seat is arranged on the outside of the die cutter, and its surface is provided with six mounting holes in a circular array; the mounting assembly is arranged on the inner wall surface of the die seat, and it includes six mounting grooves in a circular array provided on the inner wall surface of the die seat, a die plate installed in the mounting groove, and threaded teeth fixedly connected to the surface of the die plate, a fastening bolt 1 is inserted on the bottom surface of the die seat, and the die plate is fixedly connected to the die seat by the fastening bolt 1. However, the above-mentioned die cutter has the following defects during use:

[0003] 1. The die tool lacks guidance. When cutting metal rods for machining or modifying external threads, the metal rods are prone to squeeze the thread teeth on the surface of the die plate, causing damage to the tool.

[0004] 2. When the die tool is used to correct external threads, the chips generated are small and few in size. When discharged from the chip removal hole, they fly everywhere and are easily adsorbed on the surface of the rod, causing damage to the thread teeth on the surface of the die, affecting the correction effect and increasing the difficulty of cleaning. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the die tool lacks guidance and the fine debris generated by correcting the external thread cannot be discharged in a concentrated or directionally manner, which can easily lead to damage to the thread teeth; in view of the above problems, a die tool for metal cutting is proposed, including a die seat, multiple cutting components, a cover plate and a sealing component, the end face of the die seat is provided with multiple through chip grooves, the cutting component is arranged between the chip grooves and is connected to the die seat by a first screw, the cover plate is arranged on the lower surface of the die seat and is connected to the die seat by a second screw, a first guide hole is provided in the middle of the cover plate, and multiple second guide holes are evenly provided around the cover plate, the second guide holes are connected to the chip grooves, and the sealing component is detachably arranged in the chip grooves.

[0006] The technical solution of the utility model provides a first guide hole structure on the cover plate to guide the metal rod, which is convenient for processing or correcting the external thread; provides a second guide hole structure on the cover plate to guide the metal debris generated when processing or correcting the external thread to be obliquely discharged to the outside, thereby avoiding vertical discharge that affects the subsequent processing or correction process of the metal rod; and provides a detachable sealing component structure for use when correcting the external thread to collect a small amount of fine debris generated for subsequent centralized discharge, thereby avoiding the debris from scattering and increasing the difficulty of cleaning.

[0007] Preferably, the outer contour of the die seat is in the shape of a circular ring, and a limit groove is provided on the outer side wall of the die seat. The limit groove is perpendicular to the end face and extends downward out of the cover plate. A plurality of mounting holes are evenly arranged on the outer wall of the die seat along the radius of the cylinder, and a mounting groove for placing the cutting assembly is provided between every two chip grooves on the die seat. A plurality of positioning columns are also provided on the lower surface of the die seat. The limit groove facilitates the positioning of the die seat and the external milling structure, and the mounting hole is used to connect a long rod screw to mill the rod.

[0008] Preferably, the surface of the cutting assembly is provided with thread teeth, and the bottom surface of the cutting assembly is provided with a countersunk hole for a first screw, the thread teeth are used for processing or correcting external threads, and the countersunk hole facilitates the cover plate to fit tightly with the lower surface of the die seat.

[0009] Preferably, the first guide hole is trumpet-shaped, with a small opening at the top and a large opening at the bottom. The first guide hole facilitates the metal rod to extend into the die tool for milling, processing or correction of external threads.

[0010] Preferably, the opening above the second guide hole is connected to the chip removal groove, and the opening below the second guide hole gradually narrows outward to form a slope toward the outside of the cover plate. The second guide hole is inclined toward the outside to facilitate the discharge of the generated metal debris to the outside of the rod, thereby avoiding affecting the effect of processing or correcting the external thread.

[0011] In a preferred embodiment of the technical solution of the utility model, a positioning hole matching the positioning column is provided on the cover plate, and the positioning hole and the positioning column cooperate with each other to facilitate the installation of the cover plate.

[0012] Preferably, the sealing assembly comprises an upper plate and a lower plate, and the upper plate and the lower plate are connected by a connecting rod. The sealing assembly is detachable and is only used when correcting the external thread to collect a small amount of fine metal debris and reduce the impact on the correction process.

[0013] Preferably, the upper plate is flush with the upper surface of the die seat, and the lower plate is flush with the lower surface of the second guide hole. The second guide hole is larger at the top and smaller at the bottom. When the lower plate is flush with the lower surface of the second guide hole, the sealing assembly can be clamped, which is simple to install.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The technical solution of the utility model is to guide the metal rod by setting a first guide hole structure on the cover plate to facilitate the processing or correction of the external thread; and to guide the metal debris generated when processing or correcting the external thread to be obliquely discharged to the outside by setting a second guide hole structure on the cover plate, so as to avoid vertical discharge affecting the subsequent processing or correction process of the metal rod.

[0016] 2. The technical solution of the utility model, by providing a detachable sealing component structure, is used when correcting the external thread to collect a small amount of fine debris generated for subsequent centralized discharge, thereby avoiding the debris from scattering and increasing the difficulty of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of a die tool for metal cutting;

[0018] Figure 2 It is a three-dimensional schematic diagram of a second embodiment of a die tool for metal cutting;

[0019] Figure 3 It is an exploded schematic diagram of a die tool structure for metal cutting;

[0020] Figure 4 It is a schematic cross-sectional view of a die tool for metal cutting;

[0021] Among them: die seat 1, limit groove 11, mounting hole 12, chip groove 13, mounting groove 14, positioning column 15, cutting assembly 2, threaded teeth 21, first screw 22, cover plate 3, first guide hole 31, positioning hole 32, second screw 33, second guide hole 34, sealing assembly 4, upper plate 41, lower plate 42, connecting rod 43. DETAILED DESCRIPTION

[0022] The following will be combined with the attached embodiment of the present utility model Figure 1-4 , the technical solutions in the embodiments of the utility model are described in detail. Example 1

[0023] like Figure 1 and 3 -4, the utility model is a die tool for metal cutting, comprising a die seat 1, a plurality of cutting components 2, a cover plate 3 and a sealing component 4.

[0024] The overall outer contour of the die seat 1 is in the shape of a circular ring, and the intersection of the upper surface and the side wall is chamfered. A limiting groove 11 is provided on the outer wall of the die seat 1, and the limiting groove 11 can be formed by a drilling tool. The limiting groove 11 is perpendicular to the end face of the die seat 1 and extends downward from the cover plate 3. The limiting groove 11 facilitates the positioning and fixing of the die seat 1 and the external milling structure.

[0025] The outer wall surface of the die seat 1 is evenly provided with a plurality of mounting holes 12 along the radius of the circular ring. The mounting holes 12 are processed by a drilling tool, and the inner wall thereof is processed by a thread cutter to form threads, which are threadedly connected to the long rod screw rod, so as to facilitate subsequent manual or mechanical use to mill, process or correct the external threads of the metal rod.

[0026] A plurality of chip grooves 13 are provided on the end face of the die seat 1. The chip grooves 13 pass through the entire die seat 1 from top to bottom. The chip grooves 13 can be formed by a drilling tool. A mounting groove 14 is provided between every two chip grooves 13 on the die seat 1. The mounting groove 14 is used to fix the cutting assembly 2. The mounting groove 14 can be formed by a drilling tool. The mounting groove 14 passes through the lower surface and the inner wall surface of the die seat 1.

[0027] The lower surface of the die seat 1 also protrudes downward to form a plurality of positioning posts 15, which are used to assist in positioning the cover plate 3, so as to facilitate the fixed connection between the cover plate 3 and the die seat 1.

[0028] The cutting assembly 2 is placed in each mounting groove 14 respectively. The surface of the cutting assembly 2 facing the inner side of the die seat 1 is provided with thread teeth 21. The thread teeth 21 slightly protrude from the inner wall of the die seat 1. The thread teeth 21 and the main body of the cutting assembly 2 are integrally formed.

[0029] The bottom surface of the cutting assembly 2 is processed by a drilling tool to form a countersunk hole for the first screw 22, and the countersunk hole can hide the screw head of the first screw 22, so that the cover plate 3 and the die seat 1 are tightly connected. The first screw 22 passes through the countersunk hole and is connected to the die seat 1, thereby fixing the die seat 1 and the cutting assembly 2 together.

[0030] The upper surface of the cover plate 3 fits with the lower surface of the die seat 1 and is connected to the die seat 1 through the second screw 33. The lower surface of the cover plate 3 is processed by a drilling tool to form a countersink for the second screw 33, and a thread matching the second screw 33 is formed on the inner wall of the countersink by a thread cutter.

[0031] The lower surface of the cover plate 3 is chamfered at the intersection with its side wall, and the middle part of the cover plate 3 is processed by a milling cutter to form a first guide hole 31. The first guide hole 31 is trumpet-shaped, with a small opening at the top and a large opening at the bottom. The opening above the first guide hole 31 fits with the bottom of the inner hole of the circular ring of the die seat 1, and the lower opening gradually expands outward, which is convenient for guiding the metal rod to facilitate the subsequent external thread processing or correction of the metal rod.

[0032] The cover plate 3 is processed by a milling cutter to form multiple second guide holes 34 on the outside of the first guide hole 31, and the second guide holes 34 are evenly distributed on the cover plate 3. The opening above the second guide hole 34 is connected to the chip groove 13, and the opening below the second guide hole 34 gradually shrinks outward to form a slope toward the outside of the cover plate 3. The cross-sectional shape of the second guide hole 34 is a right-angled trapezoid, the length of the upper base is greater than the length of the lower base, and the hypotenuse is located on the inside.

[0033] like Figure 3 As shown, the second guide hole 34 gradually shrinks as it goes downward, but only the part close to the inner side gradually shrinks, and the outer side remains unchanged. Vertically downward, the opening below the second guide hole 34 is gradually flattened, just like the chip removal groove 13 above, and the shape of the opening below the second guide hole 34 in the figure is affected by the first guide hole 31. If the inclination of the first guide hole 31 or the second guide hole 34 is changed, the bottom shape will be flat.

[0034] Therefore, when the metal debris is discharged, the metal debris will fall further away from the metal rod, so as to avoid affecting the subsequent processing or correction of the external thread of the metal rod, or even causing damage to the thread teeth 21 of the die tool.

[0035] The cover plate 3 is concavely formed with a positioning hole 32 matching the positioning column 15 to facilitate engagement with the positioning column 15 for positioning, and then the cover plate is connected to the die seat 1 by a second screw 33 .

[0036] The sealing assembly 4 is a detachable structure, and the sealing assembly 4 includes an upper plate 41 and a lower plate 42. The upper plate 41 and the lower plate 42 are welded and fixed by a connecting rod 43. The second guide hole 34 is larger at the top and smaller at the bottom, so the sealing assembly 4 can be directly placed in the chip groove 13 from top to bottom. The upper plate 41 is flush with the upper surface of the die seat 1, and the lower plate 42 is flush with the lower surface of the second guide hole 34.

[0037] When the external thread of the metal rod needs to be corrected, a small amount of small metal debris will be generated. This part of the metal debris will fall from the second guide hole 34. Due to the influence of the sealing component 4, it will not continue to fall, avoiding being adsorbed on the metal rod, affecting the correction effect, and even damaging the thread teeth 21. At the same time, the small metal debris is collected and concentrated to reduce the difficulty of cleaning later and avoid damage to the environment and human body. Example 2

[0038] like Figure 2-4 As shown, when it is necessary to form external threads on a smooth metal rod, a large amount of metal debris is generated and the volume is relatively large. This part of the metal debris needs to be discharged in time. If the sealing component 4 is installed, the closed space cannot accommodate all the metal debris, so the sealing component 4 needs to be removed.

[0039] After removing the sealing component 4, when processing the external thread, there are usually more metal chips and they are larger in size, especially when processing materials with high toughness and plasticity (such as copper and aluminum). The length of a chip is often approximately the sum of the circumference of the thread, that is: the length of the chip is the same as the length of the thread trajectory. The metal chips fall through the second guide hole 34. Since the inner side of the second guide hole 34 forms a slope toward the outside, the metal chips will scatter toward the outside.

[0040] If the second guide hole 34 is vertically downward, it is difficult to avoid the metal debris that falls directly from the metal rod and adheres to the metal rod, affecting the external thread processing effect, and even causing the thread teeth to deform and become thinner, resulting in quality problems such as serious deviation in the size of the processed external thread.

[0041] Furthermore, the opening below the second guide hole 34 can be set on the side wall of the cover plate 3, so that when metal debris falls, it will be further away from the metal rod below, and will not affect the processing effect. In this case, the thickness of the cover plate 3 is relatively large, and the external thread cannot be extended all the way to the bottom of the metal rod when processing the external thread.

[0042] A method of using a die tool for metal cutting in this embodiment is as follows:

[0043] First, install the cutting assembly 2 in the mounting groove 14 of the die seat 1 and fix it with the first screw 22. Then align the positioning hole of the cover plate 3 with the positioning column 15 on the lower surface of the die seat 1, so that the cover plate 3 and the die seat 1 are in contact and fixed with the second screw 33. Then, place the sealing assembly 4 into the chip groove 13 from top to bottom, and the die tool is installed. Next, position the die seat 1 and the external milling structure through the limit groove, and then threadably connect them to the mounting hole 12 through a long rod screw to fix the die seat 1 and the external milling structure. When correcting the external thread, the metal rod to be corrected is fixed vertically, with the first guide hole 31 of the die tool facing downward, and the die tool is inserted into the top of the metal rod from top to bottom, and the die tool is continuously rotated to make the thread teeth 21 engage with the external thread of the metal rod to correct the damaged external thread. At this time, a small amount of metal debris generated falls from the chip groove 13. Due to the obstruction of the sealing component 4, the metal debris is concentrated in the second guide hole 34. After the correction is completed, the die tool is rotated in the opposite direction to separate it from the metal rod, and the sealing component 4 is poured out in the opposite direction to discharge all the collected metal debris. After cleaning, it is stored for subsequent use.

[0044] When processing the external thread, only the sealing component 4 needs to be removed, and the rest remains unchanged. The metal fragments generated during processing will fall from the chip groove 13, and then pass through the second guide hole 34 and be discharged to the surrounding area away from the metal rod, so as to avoid falling directly and affecting the external thread processing effect, and even causing deformation and thinning of the thread teeth, resulting in serious deviation in the size of the processed external thread and other quality problems.

[0045] The above embodiments are only for illustrating the technical idea of ​​the present utility model, and cannot be used to limit the protection scope of the present utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A die tool for metal cutting, characterized in that: The invention comprises a die seat (1), a plurality of cutting assemblies (2), a cover plate (3) and a sealing assembly (4); the die seat (1) is provided with a plurality of through-going chip grooves (13) on its end surface; the cutting assembly (2) is arranged between the chip grooves (13) and connected to the die seat (1) via a first screw (22); the cover plate (3) is arranged on the lower surface of the die seat (1) and connected to the die seat (1) via a second screw (33); a first guide hole (31) is provided in the middle of the cover plate (3); the first guide hole (31) is horn-shaped, with a small opening at the top and a large opening at the bottom; a plurality of second guide holes (34) are evenly arranged around the cover plate (3); the second guide holes (34) are connected to the chip grooves (13); the opening below the second guide holes (34) gradually decreases toward the outside to form a slope toward the outside of the cover plate (3); and the sealing assembly (4) is detachably arranged in the chip groove (13).

2. A die tool for metal cutting according to claim 1, characterized in that: The die seat (1) has an outer contour in the shape of a circular ring. A limiting groove (11) is provided on the outer wall of the die seat (1). The limiting groove (11) is perpendicular to the end face and extends downwardly out of the cover plate (3). A plurality of mounting holes (12) are evenly arranged on the outer wall of the die seat (1) along the radial direction of the cylinder. A mounting groove (14) for placing the cutting assembly (2) is provided between every two chip removal grooves (13) on the die seat (1). A plurality of positioning columns (15) are also provided on the lower surface of the die seat (1).

3. A die tool for metal cutting according to claim 1, characterized in that: The surface of the cutting assembly (2) is provided with thread teeth (21), and the bottom surface of the cutting assembly (2) is provided with a countersunk hole for a first screw (22).

4. A die tool for metal cutting according to claim 1, characterized in that: The opening above the second guide hole (34) is connected to the chip removal groove (13).

5. A die tool for metal cutting according to claim 2, characterized in that: The cover plate (3) is provided with a positioning hole (32) matching the positioning column (15).

6. A die tool for metal cutting according to claim 1, characterized in that: The sealing assembly (4) comprises an upper plate (41) and a lower plate (42), wherein the upper plate (41) and the lower plate (42) are connected via a connecting rod (43).

7. A die tool for metal cutting according to claim 6, characterized in that: The upper plate (41) is flush with the upper surface of the die seat (1), and the lower plate (42) is flush with the lower surface of the second guide hole (34).

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