A die locking structure for a machine tool drill forging equipment and a machine tool drill

Abstract

This invention discloses a mold locking structure for machine tool drill bit forging equipment and a machine tool drill bit, relating to the field of drill bit forging technology. It includes a processing table with evenly spaced inverted T-shaped grooves, a base plate mounted on the processing table, a lower mold positioned above the base plate, and a top plate positioned above the lower mold. This mold locking structure and machine tool drill bit, through an automatic compensation mechanism, utilize a correction rod longer than the guide post in cooperation with a positioning plate with an inclined surface. This ensures that before the upper and lower molds are formally closed and guided, the correction rod contacts and acts on the positioning plate to achieve automatic correction. If the lower mold is misaligned due to base plate offset, the correction rod uses its inclined surface to force the lower mold to move laterally, automatically correcting its center position. This ensures precise mold closing of the upper and lower molds, eliminating the need for manual intervention and downtime for maintenance. This greatly guarantees product quality consistency in mass production and reduces downtime for adjustments.

Description

Technical Field

[0001] This invention relates to the field of drill bit forging technology, specifically to a mold locking structure for machine tool drill bit forging equipment and a machine tool drill bit. Background Technology

[0002] In the forging process of machine tool drill bits, the precise and stable locking of the die (especially the lower die) is crucial to ensuring the quality of the forgings and improving the lifespan of the equipment. Existing die fixing methods typically use T-bolts and nuts to rigidly lock the base plate to the T-slot of the machining table. However, this structure has inherent defects: 1. When forging equipment is working continuously, it will generate severe and periodic impact vibrations. This vibration can easily cause the locking nut to rotate relative to each other, resulting in slight loosening. As the working time accumulates, the loosening will intensify, causing the base plate and the lower die to shift laterally, which will disrupt the alignment of the upper and lower dies. This will not only produce defective or scrap products, but may also cause serious equipment accidents such as die collisions and damage. 2. Lacking an automatic compensation mechanism, once the lower mold deviates slightly, or gaps are created due to wear of bolts or mounting holes, the traditional structure cannot self-correct. Operators must stop the machine and manually inspect and readjust the mold. This process is time-consuming and labor-intensive, seriously affecting production efficiency and equipment utilization. Summary of the Invention

[0003] The purpose of this invention is to provide a mold locking structure for machine tool drill bit forging equipment and a machine tool drill bit, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a mold locking structure for machine tool drill bit forging equipment, including a processing table, wherein inverted T-shaped grooves are evenly spaced on the processing table, a base plate is installed on the processing table, a lower mold is provided above the base plate, and a top plate is provided above the lower mold; An automatic compensation mechanism is used to automatically correct and compensate for the position of the lower mold when the base plate and the lower mold are offset. The automatic compensation mechanism is connected to the lower mold and to the base plate. The limiting mechanism is used to achieve the installation locking and self-locking function of the base plate, effectively reducing the probability of the base plate shifting. The limiting mechanism is installed on the base plate.

[0005] Preferably, a limiting plate is symmetrically fixed to the front and back of the lower end of the base plate, and the limiting plate and the inverted T-slot are nested to achieve the positioning function. A support platform is fixed to the upper end of the base plate, and the support platform is located directly below the lower die. Fixing toothed plates are symmetrically fixed to the outer side of the support platform. Through the nesting effect between the limiting plate and the inverted T-slot, the base plate can be positioned and installed, and the front and back displacement of the base plate can be prevented, ensuring the stability of the base plate installation. The support platform can provide rigid support for the lower die during drill bit forging, ensuring the normal progress of the processing.

[0006] Preferably, the lower mold is symmetrically fixed with limiting tooth plates, and the limiting tooth plates are located directly above the fixed tooth plates. The limiting tooth plates engage with the fixed tooth plates to achieve a positioning function. During the processing, the locking function between the limiting tooth plates and the fixed tooth plates can achieve the locking function of the lower mold position, ensure the stability of the lower mold, and prevent the lower mold from shifting.

[0007] Preferably, an upper mold is fixed to the lower end face of the top plate, and a guide post is also fixed to the lower end face of the top plate. The guide post is slidable in conjunction with the upper opening of the lower mold. When the upper mold and the lower mold are engaged, the sliding action between the guide post and the lower mold can achieve guiding and positioning, ensuring the accuracy of the assembly of the upper mold and the lower mold.

[0008] Preferably, the automatic compensation mechanism includes a fixed plate fixed to the top plate, and the fixed plate contacts the correction rod to achieve a positioning function. The correction rod is fixedly connected to the top plate, and a sliding connection is formed between the correction rod and the positioning plate. The positioning plate is fixed to the lower mold, and the upper side of the positioning plate has an inclined structure. The length of the correction rod is greater than the length of the guide post. Through the sliding action between the correction rod and the positioning plate, the automatic correction and positioning function of the lower mold can be achieved when there is an offset between the lower mold and the upper mold, ensuring the normal progress of subsequent processing.

[0009] Preferably, the automatic compensation mechanism further includes horizontal bars that are symmetrically fixed on the lower mold, and the horizontal bars are slidably connected to the mounting plate. A first spring is fixed between the mounting plate and the lower mold, and the first spring is symmetrically distributed about the center line of the lower mold. Through the elastic action of the first spring, the lower mold can move laterally, thereby providing a basic guarantee for the automatic correction of the lower mold. In addition, the sliding guide action between the horizontal bars and the mounting plate can ensure the stability of the movement of the lower mold.

[0010] Preferably, the mounting plate is fixed to one end of the vertical rod, and the vertical rod is slidably connected to the fixed box. The other end of the vertical rod is fixed to the movable plate. The vertical rod is symmetrically distributed about the center line of the mounting plate. The movable plate is set inside the fixed box, and a second spring is symmetrically fixed between the movable plate and the fixed box. With the above structure, buffering can be achieved in the early stage of drill bit forging to ensure the normal progress of drill bit forging. Furthermore, the sliding action between the vertical rod and the fixed box can ensure the stability of the vertical movement of the lower die.

[0011] Preferably, the limiting mechanism includes ear plates that are symmetrically fixed to the base plate, and the ear plates are penetrated by fixing bolts. The fixing bolts are slidably connected in the inverted T-shaped groove. At the same time, the ear plates are locked to the inverted T-shaped groove by fixing bolts and locking nuts. Through the above structure, the installation and locking function of the base plate and the processing table can be realized, ensuring the stability of the device fixation.

[0012] Preferably, an anti-slip ring is fixed to the lower end face of the locking nut, and the anti-slip ring engages with the toothed plate for positioning. The toothed plate is fixed to one end of the slide rod, while the slide rod is slidably connected to the base plate. A third spring is also fixed between the slide rod and the base plate, and an inclined block is fixed to the other end of the slide rod. The inclined block is slidably connected to the top rod, and the top rod is fixed to the movable plate. The top rod is slidably connected to the base plate and the fixed box. During the forging process, the movable plate drives the top rod to move downward. Combined with the sliding action between the inclined block and the top rod, a basic force can be provided for the movement of the slide rod and the toothed plate. The locking and positioning action between the toothed plate and the anti-slip ring can realize the limiting action of the locking nut, thereby effectively preventing the base plate from loosening and shifting.

[0013] A machine tool drill bit, the machining process of which utilizes the aforementioned mold locking structure for a machine tool drill bit forging equipment.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The die locking structure and machine tool drill bit of this machine tool drill bit forging equipment, through an automatic compensation mechanism, utilize a correction rod with a length greater than the guide post and a positioning plate with an inclined surface. This allows the correction rod to contact and act on the positioning plate before the upper and lower dies are officially closed and guided, achieving automatic correction. If the lower die is not in the correct position due to the offset of the base plate, the correction rod will use its inclined surface to force the lower die to move laterally, automatically correcting its center position, ensuring that the upper and lower dies can be accurately closed in the end. No manual intervention or downtime maintenance is required, which greatly ensures the consistency of product quality in mass production, reduces downtime adjustment time, and after the correction is completed, when facing the forging and stamping, the limiting tooth plate and the fixed tooth plate engage to provide additional lateral locking for the lower die after correction, further enhancing the stability of the lower die during forging. 2. The die locking structure and machine tool drill bit of this forging equipment combine the forging and stamping process with the locking mechanism. Through the linkage design of the movable plate, push rod, inclined block, slide rod and toothed plate, when the stamping pressure causes the lower die to fall to contact the support table, the toothed plate is automatically pushed to engage with the anti-slip ring at the lower end of the locking nut. This adds a mechanical anti-rotation lock to the locking nut before the impact force of the billet forging arrives, locking it in the current position and effectively resisting the vibration and loosening caused by the subsequent forging impact, fundamentally ensuring the long-term stability of the base plate installation. Attached Figure Description

[0015] Figure 1 This is a frontal three-dimensional structural diagram of the overall composition of the device of the present invention; Figure 2 This is a bottom-view three-dimensional structural diagram of the base plate of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the top plate and the automatic compensation mechanism of the present invention; Figure 4 This is a three-dimensional cross-sectional view of the fixing box of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the limiting mechanism of the present invention; Figure 6 This is a magnified three-dimensional structural diagram of a partial cross-section of the fixing bolt and the machining table of the present invention.

[0016] In the diagram: 1. Machining table; 2. Inverted T-slot; 3. Base plate; 301. Limiting plate; 302. Support platform; 303. Fixed toothed plate; 4. Lower mold; 401. Limiting toothed plate; 5. Top plate; 501. Upper mold; 502. Guide post; 6. Automatic compensation mechanism; 601. Fixed plate; 602. Correction rod; 603. Positioning plate; 604. Horizontal bar; 605. Mounting plate; 606. First spring; 607. Vertical bar; 608. Fixed box; 609. Movable plate; 610. Second spring; 7. Limiting mechanism; 701. Ear plate; 702. Fixing bolt; 703. Locking nut; 704. Anti-slip ring; 705. Toothed plate; 706. Sliding rod; 707. Third spring; 708. Inclined block; 709. Top rod. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-6The present invention provides a technical solution: a mold locking structure for machine tool drill bit forging equipment, including a processing table 1, inverted T-shaped grooves 2 evenly spaced on the processing table 1, a base plate 3 installed on the processing table 1, a lower mold 4 above the base plate 3, and a top plate 5 above the lower mold 4. Automatic compensation mechanism 6 is used to automatically correct and compensate the position of lower mold 4 when the base plate 3 and lower mold 4 are offset. Automatic compensation mechanism 6 is connected to lower mold 4 and base plate 3. The limiting mechanism 7 is used to achieve the installation locking and self-locking function of the base plate 3, effectively reducing the probability of the base plate 3 shifting. The limiting mechanism 7 is installed on the base plate 3.

[0019] A limiting plate 301 is symmetrically fixed to the front and back of the lower end of the base plate 3, and the limiting plate 301 and the inverted T-shaped groove 2 are nested to achieve the positioning function. A support platform 302 is fixed to the upper end of the base plate 3, and the support platform 302 is located directly below the lower mold 4. A fixing tooth plate 303 is symmetrically fixed to the front and back of the outer side of the support platform 302. The limiting mechanism 7 includes ear plates 701 symmetrically fixed to the left and right of the base plate 3. The ear plates 701 are penetrated by fixing bolts 702, and the fixing bolts 702 are slidably connected in the inverted T-shaped groove 2. At the same time, the ear plates 701 are locked to the inverted T-shaped groove 2 by fixing bolts 702 and locking nuts 703. When using the die locking structure of this machine tool drill forging equipment, such as Figures 1-6 As shown, the base plate 3 is first fixedly installed on the processing table 1. The fixing bolt 702 is engaged with the inverted T-slot 2, and the position of the fixing bolt 702 can be adjusted by moving the fixing bolt 702 within the inverted T-slot 2, ensuring that the fixing bolt 702 engages with the round hole of the ear plate 701 on the side of the base plate 3. Then, through the nesting action between the limiting plate 301 and the inverted T-slot 2, the front and rear positioning of the base plate 3 can be achieved, ensuring that the base plate 3 will not shift back and forth during subsequent processing. At this time, the lower end face of the base plate 3 is in contact with the processing table 1, and the fixing bolt 702 passes through the ear plate 701. Then, through the threaded connection between the fixing bolts 702, the ear plate 701 and the processing table 1 can be locked, thereby achieving the fixed installation of the base plate 3 and the processing table 1. After the base plate 3 is installed, the top plate 5 and the forging machine drive mechanism (hydraulic rod) can be installed and fixed. The upper mold 501 is fixed to the lower end face of the top plate 5, and the guide post 502 is also fixed to the lower end face of the top plate 5. The guide post 502 can slide with the opening on the lower mold 4. After the base plate 3 and top plate 5 are installed, as follows: Figures 1-6As shown, the upper die 501 is located directly above the lower die 4 at this time, so that the subsequent drill bit forging process can be carried out. During the forging process, the drill bit blank is placed on the lower die 4. At this time, the top plate 5 is driven to move down by the forging machine drive mechanism, thereby driving the upper die 501 to move down. The forging plasticity of the drill bit blank can be achieved by the cooperation of the upper die 501 and the lower die 4. During the forging process, when the position of the lower die 4 does not shift due to forging and stamping, the forging machine drive mechanism drives the top plate 5 to move downward, allowing the correction rod 602 and the positioning plate 603 to slide normally. At this time, the guide post 502 and the opening on the lower die 4 cooperate to guide and position the upper die 501 and the lower die 4, ensuring the accuracy of the assembly of the upper die 501 and the lower die 4. During this process, when the upper die 501 contacts the drill blank on the lower die 4, the lower die 4, the drill blank, the crossbar 604 and the mounting plate 605 are subjected to downward force. With the sliding guidance between the vertical rod 607 and the fixed box 608, the stability of the movement of the lower die 4 can be ensured until the lower die 4 contacts the support table 302 to achieve rigid support of the lower die 4. At this time, the continued downward movement of the upper die 501 can realize the forging of the drill blank. An anti-slip ring 704 is fixed to the lower end face of the locking nut 703, and the anti-slip ring 704 can be positioned by engaging with the toothed plate 705. The toothed plate 705 is fixed to one end of the slide rod 706, and the slide rod 706 is slidably connected to the base plate 3. A third spring 707 is also fixed between the slide rod 706 and the base plate 3. An inclined block 708 is fixed to the other end of the slide rod 706, and the inclined block 708 is slidably connected to the top rod 709. The top rod 709 is fixed to the movable plate 609, and the top rod 709 is slidably connected to the base plate 3 and the fixed box 608. When the vertical rod 607 slides downward relative to the fixed box 608, the movable plate 609 moves downward synchronously under force, and the second spring 610 contracts under force. The downward movement of the movable plate 609 synchronously drives the top rod 709 downward. Combined with the sliding guide effect between the top rod 709 and the base plate 3 and the fixed box 608, the stability of the top rod 709's movement is ensured. Furthermore, as the top rod 709 moves downward, the sliding action between the top rod 709 and the inclined block 708 causes the slide rod 706 to slide outward from the base plate 3. At this time, the third spring 707 contracts under force. The movement of the slide rod 706 causes the retaining plate 705 to move towards the anti-slip ring 704. When the lower mold 4 contacts the support platform 302, the retaining plate 705 is precisely engaged with the anti-slip ring 704. The locking mechanism effectively locks the locking nut 703 and the fixing bolt 702, preventing them from loosening due to the impact of drill bit forging and causing lateral displacement of the base plate 3. This ensures the stability of the base plate 3 during installation. Furthermore, based on the above principle, before the lower die 4 contacts the support platform 302, the upper die 501 and the lower die 4 are in flexible contact, and the drill bit blank has not yet undergone formal stamping and forging. When the lower die 4 contacts the support platform 302 to provide rigid support, the toothed plate 705 engages with the anti-slip ring 704 to lock the locking nut 703 and the fixing bolt 702. This effectively reduces the loosening of the locking nut 703 and the fixing bolt 702 due to stamping and forging, ensuring the stability of the device. A limiting toothed plate 401 is symmetrically fixed on the lower mold 4, and the limiting toothed plate 401 is located directly above the fixed toothed plate 303. The limiting toothed plate 401 engages with the fixed toothed plate 303 to achieve positioning. The automatic compensation mechanism 6 includes a fixed plate 601 fixed on the top plate 5. The fixed plate 601 contacts the correction rod 602 to achieve positioning. The correction rod 602 is fixedly connected to the top plate 5, and a sliding connection is formed between the correction rod 602 and the positioning plate 603. The positioning plate 603 is fixed on the lower mold 4, and the upper side of the positioning plate 603 has an inclined structure. The length of the correction rod 602 is greater than the length of the guide post 502. The automatic compensation mechanism 6 also includes symmetrically fixed plates on the left and right sides. A horizontal bar 604 is mounted on the lower mold 4, and the horizontal bar 604 is slidably connected to the mounting plate 605. A first spring 606 is fixed between the mounting plate 605 and the lower mold 4, and the first spring 606 is symmetrically distributed about the center line of the lower mold 4. The mounting plate 605 is fixed to one end of the vertical bar 607, and the vertical bar 607 is slidably connected to the fixed box 608. The other end of the vertical bar 607 is fixed to the movable plate 609, and the vertical bar 607 is symmetrically distributed about the center line of the mounting plate 605. The movable plate 609 is set inside the fixed box 608, and a second spring 610 is symmetrically fixed between the movable plate 609 and the fixed box 608. During continuous forging, when the fixing bolt 702 deforms or when the fixing bolt 702 and the circular hole on the fixing bolt 702 create a gap due to vibration and friction, the base plate 3 will shift slightly. That is, the relative position of the lower die 4 and the upper die 501 will shift laterally. When the upper die 501 moves down to cooperate with the lower die 4 for forging, since the length of the correction rod 602 is greater than the length of the guide post 502, the correction rod 602 contacts the positioning plate 603 before the guide post 502. Through the sliding action between the correction rod 602 and the inclined surface of the positioning plate 603, the lower die 4 can move laterally relative to the base plate 3. With the sliding guide action between the crossbar 604 and the mounting plate 605, the stability of the movement of the lower die 4 can be ensured. When the correction rod 602 contacts and slides with the vertical plane on the positioning plate 603, the automatic correction action of the lower die 4 is completed, so that the lower die 4 is exactly below the upper die 501, ensuring that the upper die 501 and the lower die 4 cooperate normally to achieve the forging of the drill bit blank. When the upper die 501 moves down and causes the lower die 4 to move down and contact the support platform 302, the limiting tooth plate 401 and the fixed tooth plate 303 are engaged at this time, thereby achieving lateral locking of the position of the lower die 4 after correction, effectively preventing the lower die 4 from shifting laterally during forging and stamping, and ensuring the accuracy of forging processing.

[0020] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A mold locking structure for a machine tool drill bit forging equipment, comprising a processing table (1), wherein inverted T-shaped grooves (2) are evenly spaced on the processing table (1), characterized in that: A base plate (3) is installed on the processing table (1), a lower mold (4) is provided above the base plate (3), and a top plate (5) is provided above the lower mold (4). Automatic compensation mechanism (6) is used to automatically correct the position of the lower mold (4) when the base plate (3) and the lower mold (4) are offset. The automatic compensation mechanism (6) is connected to the lower mold (4) and the base plate (3). The limiting mechanism (7) is used to realize the installation locking and self-locking function of the base plate (3), effectively reducing the probability of the base plate (3) shifting. The limiting mechanism (7) is installed on the base plate (3). The upper mold (501) is fixed to the lower end face of the top plate (5), and a guide post (502) is also fixed to the lower end face of the top plate (5). The guide post (502) can slide with the opening on the lower mold (4). The automatic compensation mechanism (6) includes a fixing plate (601) fixed on the top plate (5). The fixing plate (601) contacts the correction rod (602) to achieve positioning. The correction rod (602) is fixedly connected to the top plate (5). At the same time, the correction rod (602) and the positioning plate (603) are slidably connected. The positioning plate (603) is fixed on the lower mold (4). The upper side of the positioning plate (603) is a sloping structure. The length of the correction rod (602) is greater than the length of the guide post (502). The automatic compensation mechanism (6) also includes a guide post (502) symmetrically fixed on the lower mold (4). 4) The horizontal bar (604) is slidably connected to the mounting plate (605), and the mounting plate (605) is fixed to the lower mold (4) with a first spring (606). The first spring (606) is symmetrically distributed about the center line of the lower mold (4). The mounting plate (605) is fixed to one end of the vertical bar (607), and the vertical bar (607) is slidably connected to the fixed box (608). The other end of the vertical bar (607) is fixed to the movable plate (609), and the vertical bar (607) is symmetrically distributed about the center line of the mounting plate (605). The movable plate (609) is set in the fixed box (608), and the movable plate (609) and the fixed box (608) are also symmetrically fixed with a second spring (610).

2. The mold locking structure for machine tool drill bit forging equipment according to claim 1, characterized in that: The bottom plate (3) has a limiting plate (301) fixed symmetrically on the front and back of the lower end face, and the limiting plate (301) and the inverted T-shaped groove (2) are nested to achieve the positioning function. The bottom plate (3) has a support platform (302) fixed on the upper end face, and the support platform (302) is located directly below the lower mold (4). The support platform (302) has a fixing tooth plate (303) fixed symmetrically on the front and back of the outer side of the support platform (302).

3. The mold locking structure for machine tool drill bit forging equipment according to claim 2, characterized in that: The lower mold (4) is symmetrically fixed with a limiting tooth plate (401) on the front and back, and the limiting tooth plate (401) is located directly above the fixed tooth plate (303). The limiting tooth plate (401) and the fixed tooth plate (303) engage to achieve the positioning function.

4. The mold locking structure for machine tool drill bit forging equipment according to claim 1, characterized in that: The limiting mechanism (7) includes ear plates (701) that are symmetrically fixed on the base plate (3) and the ear plates (701) are penetrated by fixing bolts (702). The fixing bolts (702) are slidably connected in the inverted T-groove (2). At the same time, the ear plates (701) are locked to the inverted T-groove (2) by fixing bolts (702) and locking nuts (703).

5. The mold locking structure for machine tool drill bit forging equipment according to claim 4, characterized in that: The lower end face of the locking nut (703) is fixed with an anti-slip ring (704), and the anti-slip ring (704) engages with the toothed plate (705) for positioning. The toothed plate (705) is fixed to one end of the slide rod (706), and the slide rod (706) is slidably connected to the base plate (3). A third spring (707) is also fixed between the slide rod (706) and the base plate (3). The other end of the slide rod (706) is fixed with an inclined block (708), and the inclined block (708) is slidably connected to the top rod (709). The top rod (709) is fixed on the movable plate (609), and the top rod (709) is slidably connected to the base plate (3) and the fixed box (608).

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