A device for removing burrs from a shaft workpiece

Abstract

The utility model provides a kind of for shaft workpiece's removes burr device, comprising: upper die holder, the bottom of upper die holder is provided with upper tool holder;Lower die holder, the top of lower die holder is provided with lower tool holder, horizontal cavity is formed between the upper tool holder and the lower tool holder, the horizontal cavity is used to accommodate workpiece to be processed, the upper tool holder and the lower tool holder front end have cutting edge;Pushing mechanism is arranged between the upper die holder and the lower die holder, the pushing mechanism is configured as: the upper die holder and the lower die holder close die time, the pushing mechanism pushes the workpiece to be processed horizontal movement, to make the cutting edge cut off the burr of the workpiece to be processed outer surface.Compared with prior art, the utility model provides a kind of for shaft workpiece's removes burr device, conveniently places and takes workpiece, reduces the manufacturing difficulty and manufacturing cost of equipment.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a device for removing flash from shaft-type workpieces. Background Technology

[0002] In die forging, flash (also known as burrs or overflow) is a common and critical technical phenomenon. However, as a process byproduct, flash is not part of the forging body and must be removed through subsequent trimming. For forgings with special shapes such as long shafts, how to efficiently and effectively remove flash has always been a technical challenge that the forging industry has been striving to optimize.

[0003] In existing technologies, the conventional vertical trimming method is often used. However, since shaft forgings usually have a long length-to-diameter ratio, when trimming vertically, the mold structure is complex and the manufacturing cost is high. It is difficult to position the workpiece and put it into the mold cavity. It also requires high precision of the operators. When picking up the workpiece, auxiliary equipment or complex tooling is needed, which is not only inefficient but also easy to cause safety hazards.

[0004] Therefore, there is an urgent need for a flash removal device for shaft-type workpieces, which can facilitate the placement and removal of workpieces and reduce the manufacturing cost and difficulty of the equipment. Utility Model Content

[0005] To address the technical problem caused by the need for vertical trimming of shaft-type workpieces in existing technologies, this invention provides a deflashing device for shaft-type workpieces. This device changes the vertical trimming to horizontal trimming, facilitating the handling of parts and reducing the height of the equipment, thereby lowering its manufacturing difficulty and cost.

[0006] A flash removal device for shaft-type workpieces, comprising: An upper mold base, wherein an upper tool holder is provided at the bottom of the upper mold base; The lower die holder has a lower tool holder on its top, and a horizontal cavity is formed between the upper tool holder and the lower tool holder. The horizontal cavity is used to accommodate the workpiece to be processed, and the front ends of the upper tool holder and the lower tool holder have cutting edges. A pusher mechanism is disposed between the upper mold base and the lower mold base. The pusher mechanism is configured such that when the upper mold base and the lower mold base are closed, the pusher mechanism pushes the workpiece to be processed to move horizontally, so that the cutting edge removes the flash on the outer surface of the workpiece to be processed.

[0007] Preferably, the cutting edge comprises: The first cutting edge is set at the bottom of the upper tool holder; The second cutting edge is provided at the top of the lower tool holder. Both the first and second cutting edges are semi-circular structures, and the first and second cutting edges are spaced apart along the axial direction of the horizontal cavity.

[0008] Preferably, the pushing mechanism includes: An upper drive block is fixedly disposed at the bottom of the upper mold base, and a wedge-shaped surface is provided at the rear end of the bottom of the upper drive block; The lower drive block is movably disposed on the top of the lower die holder, and the lower drive block is disposed at the front end of the lower tool holder; The upper drive block is configured such that, during the downward movement, the wedge-shaped surface contacts the lower drive block and pushes the lower drive block to move the workpiece to be processed horizontally backward, so that the cutting edge removes the flash.

[0009] Preferably, the pushing mechanism further includes: A fixing block is disposed at the front end of the lower drive block. The fixing block is fixedly connected to the top of the lower mold base. A receiving groove that is adapted to the bottom of the upper drive block is formed between the fixing block and the lower drive block.

[0010] Preferably, the pushing mechanism further includes: A guide block is fixedly mounted on the top of the lower mold base. The guide block is provided with a slide rail, which is slidably connected to the lower drive block for guiding the lower drive block.

[0011] Preferably, the pushing mechanism further includes: A first elastic element is disposed between the lower drive block and the lower tool holder. The first elastic element is configured such that when the upper drive block pushes the lower drive block to move in the direction of the lower tool holder, the first elastic element generates elastic deformation; when the upper drive block and the lower drive block are separated, the first elastic element generates elastic reset deformation to push the lower drive block to reset.

[0012] Preferably, it further includes: The grooves provided on the lower tool holder are recessed downward from the top of the lower tool holder, and there are at least two grooves. The upper tool holder has a protrusion that mates with the groove. The protrusion protrudes downward from the bottom of the upper tool holder, and the protrusion corresponds one-to-one with the groove.

[0013] Preferably, it further includes: The guide post protrudes downward from the bottom of the upper tool holder; A guide hole is provided on the lower tool holder, and the guide hole is used to cooperate with the guide post for guidance.

[0014] Preferably, it further includes: A positioning post is fixedly connected to the upper tool holder, and the positioning post is slidably connected to the upper mold base. A limit structure is provided between the positioning post and the upper mold base, and the limit structure is used to limit the lowest position of the upper tool holder. A second elastic element is disposed between the upper tool holder and the upper die holder.

[0015] Preferably, it further includes: The first balance column is provided on the lower mold base, and the first balance column protrudes towards the upper mold base. The four first balance columns are respectively provided at the four corners of the lower mold base. The second balance column is set on the upper mold base, and the second balance column protrudes towards the lower mold base. The four second balance columns are arranged in a one-to-one correspondence with the first balance column.

[0016] Compared with existing technologies, the flash removal device for shaft-type workpieces provided by this utility model includes an upper die holder, a lower die holder, an upper tool holder, and a lower tool holder. The upper tool holder is located at the bottom of the upper die holder, and the lower tool holder is located at the top of the lower die holder, forming a horizontal cavity between them. This horizontal cavity is used to place and accommodate the workpiece to be processed. The front ends of the upper and lower tool holders have cutting edges used to remove flash from the shaft-type forgings. Furthermore, a pushing mechanism is provided, located between the upper and lower die holders. The pushing mechanism is configured such that when the upper and lower die holders are closed, it pushes the workpiece to be processed horizontally, allowing the cutting edges to remove the flash from the outer surface of the workpiece. On one hand, because the workpiece is placed horizontally within the horizontal cavity, the overall height of the equipment can be reduced by horizontally pushing the workpiece to remove flash, thus reducing the manufacturing difficulty and cost. On the other hand, compared with the vertical placement of the workpiece in existing technologies, horizontally placed workpieces are easier to handle.

[0017] Therefore, compared with the prior art, the deflash removal device for shaft workpieces provided by this utility model changes the vertical cutting edge to the horizontal cutting edge, which makes it convenient to pick up and put down parts, while reducing the height of the equipment and reducing the manufacturing difficulty and cost of the equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1A schematic diagram of the structure of a workpiece to be processed provided in an embodiment of this utility model; Figure 2 A schematic diagram of the deflash removal device provided in this embodiment of the utility model; Figure 3 A state diagram of the deflash removal device provided in an embodiment of this utility model (the deflash removal device is in the state of opening the mold and placing the product). Figure 4 A state diagram of the deflash removal device provided in an embodiment of this utility model (contact state of the upper and lower cutter holders). Figure 5 A state diagram of the flash removal device provided in this embodiment of the present utility model (upper mold base and lower mold base are closed, and the cutting edge removes the flash). Figure 6 A state diagram of the deflash removal device provided in an embodiment of this utility model (upper mold base and lower mold base in mold opening state). Figure 7 This is a schematic diagram of the structure after the flash on the outer surface of the workpiece has been removed.

[0020] Reference numerals: 1. Upper mold base; 2. Lower mold base; 3. Workpiece to be processed; 5. Positioning pin; 6. Second elastic element; 7. First balance pin; 8. Second balance pin; 11. Upper tool holder; 12. Protrusion; 13. Guide pin; 21. Lower tool holder; 22. Groove; 23. Guide hole; 31. Flash; 41. Upper drive block; 42. Wedge-shaped surface; 43. Lower drive block; 44. Fixing block; 45. Guide block; 46. First elastic element; 47. Guide element; 91. First cutting edge; 92. Second cutting edge. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0023] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0024] like Figures 1 to 7 As shown, this utility model provides a flash removal device for shaft-type workpieces, characterized in that it includes: an upper mold base 1, with an upper tool holder 11 disposed at the bottom of the upper mold base 1; a lower mold base 2, with a lower tool holder 21 disposed at the top of the lower mold base 2, forming a horizontal cavity between the upper tool holder 11 and the lower tool holder 21 for accommodating the workpiece 3 to be processed, and the front ends of the upper tool holder 11 and the lower tool holder 21 having cutting edges; and a pusher mechanism disposed between the upper mold base 1 and the lower mold base 2, the pusher mechanism being configured such that when the upper mold base 1 and the lower mold base 2 are closed, the pusher mechanism pushes the workpiece 3 to be processed to move horizontally, so that the cutting edge removes the flash 31 on the outer surface of the workpiece 3 to be processed.

[0025] In existing technologies, conventional vertical trimming is often used. However, since shaft forgings typically have a long length-to-diameter ratio, positioning and placing the workpiece into the mold cavity is difficult when trimming vertically. This requires high precision from the operators, and auxiliary equipment or complex tooling is needed for removal, resulting in low efficiency and potential safety hazards. Furthermore, to ensure smooth demolding of the forging after vertical trimming, the mold usually needs to integrate an ejection mechanism (such as a hydraulic cylinder or mechanical ejection device), which significantly increases the overall height of the mold, makes the structure more complex, increases the difficulty of processing, and correspondingly raises the cost of mold materials and manufacturing.

[0026] Compared with the prior art, the flash removal device for shaft-type workpieces provided by this utility model includes an upper die holder 1, a lower die holder 2, an upper tool holder 11, and a lower tool holder 21. The upper tool holder 11 is located at the bottom of the upper die holder 1, and the lower tool holder 21 is located at the top of the lower die holder 2. A horizontal cavity is formed between the upper tool holder 11 and the lower tool holder 21, which is used to place and accommodate the workpiece 3 to be processed. The front ends of the upper tool holder 11 and the lower tool holder 21 have cutting edges for removing flash from the shaft-type forgings. Furthermore, a pushing mechanism is provided, located between the upper die holder 1 and the lower die holder 2. The pushing mechanism is configured such that when the upper die holder 1 and the lower die holder 2 are closed, the pushing mechanism pushes the workpiece 3 to be processed horizontally, so that the cutting edge removes the flash from the outer surface of the workpiece 3. On the one hand, since the workpiece 3 is placed horizontally in the horizontal cavity, the overall height of the equipment can be reduced by horizontally pushing the workpiece 3 to remove flash, thus reducing the manufacturing difficulty and cost of the equipment. On the other hand, compared with the vertical placement of the workpiece 3 in the prior art, the horizontal placement of the workpiece 3 makes it more convenient to pick up and put down.

[0027] Therefore, compared with the prior art, the deflash removal device for shaft workpieces provided by this utility model changes the vertical cutting edge to the horizontal cutting edge, which makes it convenient to pick up and put down parts, while reducing the height of the equipment and reducing the manufacturing difficulty and cost of the equipment.

[0028] In the above structure, the cutting edge is used to remove the burrs on the outer surface of the shaft workpiece. As a specific embodiment, the cutting edge in this utility model includes a first cutting edge 91 and a second cutting edge 92. The first cutting edge 91 is disposed at the bottom of the upper tool holder 11, and the second cutting edge 92 is disposed at the top of the lower tool holder 21. Both the first cutting edge 91 and the second cutting edge 92 are semi-circular structures, and the first cutting edge 91 and the second cutting edge 92 are spaced apart along the axial direction of the horizontal cavity.

[0029] like Figure 1 and Figure 7 As shown, the workpieces to be processed are before and after the removal of flash. The workpiece 3 to be processed is placed in a horizontal cavity, and the flash on the outer surface of the workpiece 3 to be processed is set at the front end of the cutting edge. When the pusher mechanism pushes the workpiece 3 to be processed to move horizontally backward, the flash is removed by the first cutting edge 91 and the second cutting edge 92.

[0030] In other words, when the workpiece 3 is moved horizontally, the burr at the top of the workpiece 3 is removed by the first cutting edge 91, and the burr at the bottom of the workpiece 3 is removed by the second cutting edge 92. Compared with removing the burr as a whole, cutting the burr in segments makes it easier to remove the burr and requires less force when removing the burr.

[0031] In the above structure, as one embodiment, the pushing mechanism in this utility model includes an upper driving block 41 and a lower driving block 43. The upper driving block 41 is fixedly disposed at the bottom of the upper mold base 1, and a wedge-shaped surface 42 is provided at the bottom of the upper driving block 41. The lower driving block 43 is disposed at the top of the lower mold base 2. The upper driving block 41 is configured such that: as the upper driving block 41 moves downward with the upper mold base 1, the wedge-shaped surface 42 contacts the lower driving block 43, and the wedge-shaped surface 42 pushes the lower driving block 43 to move the workpiece 3 to be processed toward the rear end, so that the cutting edge removes the flash.

[0032] Furthermore, as a more preferred embodiment, the pushing mechanism in this utility model embodiment also includes a fixing block 44. The fixing block 44 is disposed at the front end of the lower driving block 43. The fixing block 44 is fixedly connected to the top of the lower mold base 2. A receiving groove is formed between the fixing block 44 and the lower driving block 43. The receiving groove is adapted to the bottom of the upper driving block 41. When the upper mold base 1 moves downward, the bottom of the upper driving block 41 is first inserted into the receiving groove. At this time, the lower driving block 43 will not move horizontally. When the upper mold base 1 continues to move downward, the wedge-shaped surface 42 at the bottom of the upper driving block 41 pushes the lower driving block 43 to move horizontally, so that the workpiece 3 to be processed moves to remove the flash.

[0033] Furthermore, in order to prevent the lower drive block 43 from shifting its position during horizontal movement, as one embodiment of the present invention, the pushing mechanism further includes a guide block 45. The guide block 45 is fixedly disposed on the top of the lower mold base 2, and a slide rail is provided on the guide block 45. The slide rail is slidably connected to the lower drive block 43, and guides the lower drive block 43 through the slide rail.

[0034] In the above structure, as one embodiment, the pushing mechanism in this utility model embodiment further includes a first elastic element 46. The first elastic element 46 is disposed between the lower driving block 43 and the lower tool holder 21. The first elastic element 46 is configured such that when the upper driving block 41 pushes the lower driving block 43 to move towards the lower tool holder 21, the first elastic element 46 generates elastic deformation. When the upper driving block 41 and the lower driving block 43 are separated, the first elastic element 46 generates elastic reset deformation, pushing the lower driving block 43 to reset. That is, when the upper mold holder 1 and the lower mold holder 2 are separated, under the action of the elastic reset deformation of the first elastic element 46, the lower driving block 43 is pushed back to the initial position without the need for manual movement of the lower driving block 43.

[0035] Furthermore, as one embodiment, the first elastic element 46 in this utility model embodiment is specifically a spring.

[0036] Furthermore, as one embodiment, the feeding mechanism in this utility model embodiment also includes a guide member 47, which is fixedly connected to the lower knife holder and slidably connected to the lower drive block. The first elastic member is fitted on the outside of the guide member, and the direction of the elastic deformation and elastic recovery deformation of the first elastic member is constrained by the guide member.

[0037] Furthermore, an inclined surface is provided on the top of the lower drive block. The inclined surface is used to adapt to the wedge-shaped surface. When the upper tool holder contacts the lower tool holder, the lower drive block is still in the initial position. When the upper mold holder continues to move downward, the inclined surface contacts the side surface of the lower drive block, pushing the lower drive block and the workpiece to be processed to move towards the rear end. When the upper mold holder and the lower mold holder close the mold, the flash is completely removed.

[0038] In the above structure, in order to position the lower cutter holder 21 and the upper cutter holder 11, as one embodiment, the deflash removal device in this utility model embodiment also includes a guide post 13 and a guide hole 23. The guide post 13 protrudes downward from the bottom of the upper cutter holder 11, and the guide hole 23 is disposed on the lower cutter holder 21. The guide post 13 and the guide hole 23 cooperate to guide.

[0039] In the above structure, as one embodiment, the deflashing device for shaft parts in this utility model embodiment further includes a positioning post 5 and a second elastic element 6. The positioning post 5 is disposed between the upper tool holder 11 and the upper die holder 1, fixedly connected to the upper tool holder 11, and slidably connected to the upper die holder 1. A limiting structure is provided between the positioning post and the upper die holder, the limiting structure being used to limit the lowest position of the upper tool holder, cooperating with the upper die holder 1 to limit and constrain the lowest position of the upper tool holder 11. The second elastic element 6 is disposed between the upper tool holder 11 and the upper die holder 1. When the upper tool holder 11... When the upper die holder 21 is in full contact with the lower tool holder 21, the wedge-shaped surface 42 contacts the upper surface of the lower drive block 43. At this time, the lower drive block 43 does not move. When the upper die holder 1 continues to move downward, the wedge-shaped surface 42 contacts the side of the lower drive block 43, pushing the lower drive block 43 to move the workpiece 3 to be processed. During the movement of the workpiece 3, the cutting edge removes the flash on the outer surface of the workpiece 3. During the movement, the second elastic element 6 undergoes elastic deformation so that the upper die holder 1 can continue to move downward while the upper tool holder 11 and the lower tool holder 21 continue to maintain the mold closing state.

[0040] Furthermore, as one embodiment, the limiting structure includes a mating hole provided on the upper mold base, the mating hole being slidably connected to the positioning post, a limiting block being provided at the top of the positioning post, a stop block being provided inside the mating hole, and the bottom surface of the limiting block contacting the stop block to limit and constrain the lowest position of the upper tool holder.

[0041] In the above structure, as one embodiment, the deflash removal device for shaft-type workpieces in this utility model embodiment further includes a groove 22 and a protrusion 12. The groove 22 is disposed on the lower tool holder 21 and is recessed downward from the top of the lower tool holder 21. The groove 22 is provided in at least two places. The protrusion 12 is disposed on the upper tool holder 11 and is used to cooperate with the groove 22. The protrusion 12 protrudes downward from the bottom of the upper tool holder 11. The protrusion 12 corresponds one-to-one with the groove 22. When the upper tool holder 11 and the lower tool holder 21 are closed, the protrusion 12 is inserted into the groove 22 to prevent the upper tool holder 11 from being moved by lateral force during the edge cutting process.

[0042] In one specific implementation, four grooves 22 are provided in this embodiment of the present invention, which are respectively provided at the four corners of the lower tool holder 21, and four protrusions 12 are also provided accordingly, with the protrusions 12 corresponding to the grooves 22.

[0043] Furthermore, as one embodiment, the deflash removal device for shaft parts in this utility model embodiment further includes a first balance column 7 and a second balance column 8. The first balance column 7 is disposed on the lower mold base 2 and protrudes towards the upper mold base 1. The four first balance columns 7 are respectively disposed at the four corners of the lower mold base 2. The second balance column 8 is disposed on the upper mold base 1 and protrudes towards the lower mold base 2. The four second balance columns 8 are disposed in a one-to-one correspondence with the first balance column 7.

[0044] On the one hand, by setting first balance columns 7 at the four corners of the upper mold base 1, the upper mold base 1 can be supported, and by setting second balance columns 8 at the four corners of the lower mold base 2, the lower mold base 2 can be supported, thus avoiding uneven loading. On the other hand, when the upper mold base 1 and the lower mold base 2 move, the positions of the mold base and the lower mold base 2 are limited and constrained by the contact between the first balance columns 7 and the second balance columns 8.

[0045] The above description is merely an embodiment of this utility model. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this utility model, but these improvements all fall within the protection scope of this utility model.

Claims

1. A device for removing flash from shaft-type workpieces, characterized in that, include: Upper mold base (1), and an upper tool holder (11) is provided at the bottom of the upper mold base (1); The lower mold base (2) is provided with a lower tool holder (21) at its top. A horizontal cavity is formed between the upper tool holder (11) and the lower tool holder (21). The horizontal cavity is used to accommodate the workpiece (3) to be processed. The front ends of the upper tool holder (11) and the lower tool holder (21) have cutting edges. A pusher mechanism is provided between the upper mold base (1) and the lower mold base (2). The pusher mechanism is configured such that when the upper mold base (1) and the lower mold base (2) are closed, the pusher mechanism pushes the workpiece to be processed (3) to move horizontally so that the cutting edge removes the flash (31) on the outer surface of the workpiece to be processed (3).

2. The deflash removal device for shaft-type workpieces according to claim 1, characterized in that, The cutting edge includes: The first cutting edge is set at the bottom of the upper tool holder; The second cutting edge is provided at the top of the lower tool holder. Both the first and second cutting edges are semi-circular structures, and the first and second cutting edges are spaced apart along the axial direction of the horizontal cavity.

3. The deflash removal device for shaft-type workpieces according to claim 1, characterized in that, The pushing mechanism includes: The upper drive block (41) is fixedly disposed at the bottom of the upper mold base (1), and a wedge-shaped surface (42) is provided at the rear end of the bottom of the upper drive block (41). The lower drive block (43) is movably disposed on the top of the lower mold base (2), and the lower drive block (43) is disposed at the front end of the lower tool holder (21); The upper drive block (41) is configured such that during the downward movement, the wedge-shaped surface (42) contacts the lower drive block (43) and pushes the lower drive block (43) to move the workpiece (3) to be processed horizontally backward so that the cutting edge removes the flash.

4. The deflash removal device for shaft-type workpieces according to claim 3, characterized in that, The pushing mechanism further includes: A fixing block (44) is disposed at the front end of the lower drive block (43). The fixing block (44) is fixedly connected to the top of the lower mold base (2). A receiving groove that is adapted to the bottom of the upper drive block (41) is formed between the fixing block (44) and the lower drive block (43).

5. The deflash removal device for shaft-type workpieces according to claim 4, characterized in that, The pushing mechanism further includes: Guide block (45) is fixedly disposed on the top of the lower mold base (2). The guide block (45) is provided with a slide rail, which is slidably connected to the lower drive block (43) for guiding the lower drive block (43).

6. The deflash removal device for shaft-type workpieces according to claim 5, characterized in that, The pushing mechanism further includes: A first elastic element (46) is disposed between the lower drive block (43) and the lower tool holder (21). The first elastic element (46) is configured such that when the upper drive block (41) pushes the lower drive block (43) to move toward the lower tool holder (21), the first elastic element (46) generates elastic deformation. When the upper drive block (41) and the lower drive block (43) are separated, the first elastic element (46) generates elastic reset deformation to push the lower drive block (43) to reset.

7. The deflash removal device for shaft-type workpieces according to any one of claims 1 to 6, characterized in that, Also includes: A groove (22) is provided on the lower tool holder (21), the groove (22) is recessed downward from the top of the lower tool holder (21), and at least two grooves (22) are provided; A protrusion (12) is provided on the upper tool holder (11) and used in conjunction with the groove (22). The protrusion (12) protrudes downward from the bottom of the upper tool holder (11), and the protrusion (12) corresponds one-to-one with the groove (22).

8. The deflash removal device for shaft-type workpieces according to claim 7, characterized in that... ； Also includes: The guide post (13) protrudes downward from the bottom of the upper tool holder (11); A guide hole (23) is provided on the lower tool holder (21), and the guide hole (23) is used to cooperate with the guide post (13) for guidance.

9. The deflash removal device for shaft-type workpieces according to claim 8, characterized in that, Also includes: The positioning post (5) is fixedly connected to the upper tool holder (11), the positioning post (5) is slidably connected to the upper mold base (1), and a limit structure is provided between the positioning post (5) and the upper mold base (1). The limit structure is used to limit the lowest position of the upper tool holder (11). A second elastic element (6) is disposed between the upper tool holder (11) and the upper die holder (1).

10. The deflash removal device for shaft-type workpieces according to claim 7, characterized in that, Also includes: The first balance column (7) is set on the lower mold base (2), the first balance column (7) protrudes towards the upper mold base (1), and the four first balance columns (7) are respectively set at the four corners of the lower mold base (2); The second balance column (8) is set on the upper mold base (1), and the second balance column (8) protrudes towards the lower mold base (2). The four second balance columns (8) are arranged one-to-one with the first balance column (7).

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