Clamp head rotating device for machine tool drill bit forging device and machine tool drill bit
By introducing a buffer and clamping self-locking mechanism into the clamping head rotation device, the problems of easy damage to the servo motor and displacement of forgings in traditional devices are solved, thereby extending the motor life and improving forging accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUBEI XINGLONG TOOLS CO LTD
- Filing Date
- 2026-03-12
- Publication Date
- 2026-04-10
AI Technical Summary
In the forging process, the huge instantaneous load of the traditional clamp rotating device can cause damage to the servo motor bearings, inaccurate encoders, high equipment maintenance costs, and the forgings are prone to displacement or loosening during the forging process, affecting accuracy and safety.
A clamping head rotation device was designed, which includes a buffer mechanism and a clamping self-locking mechanism. The buffer mechanism absorbs the forging impact force to prevent the impact force from acting directly on the servo motor, and the clamping mechanism automatically locks under the forging impact to ensure that the workpiece is clamped firmly.
It extends the service life of the servo motor, reduces maintenance costs, improves forging accuracy and operational safety, and prevents the clamps from loosening and the workpiece from shifting.
Smart Images
Figure CN121820528A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of machine tool drill production, in particular to a jaw rotating device for machine tool drill forging device and machine tool drill. BACKGROUND
[0002] In the multi-station forging production of machine tool drills and other workpieces, the jaw rotating device is a key component for realizing automatic indexing and indexing of the workpiece. The traditional rotating device usually directly drives the jaw rotation through a reduction mechanism of a servo motor. However, in the forging impact process, the huge instantaneous load is directly transmitted to the output shaft of the servo motor through the jaw body and the transmission chain, which easily causes damage to the motor bearing, precision error of the encoder, and even motor scrap, resulting in high equipment maintenance cost. At the same time, the severe vibration often causes micro-relaxation of the hydraulic or mechanical clamping mechanism, causing the workpiece to shift or loosen during forging, which seriously affects the forging accuracy and brings safety hazards. SUMMARY
[0003] The present application aims to provide a jaw rotating device for machine tool drill forging device and machine tool drill to solve the problems raised in the background.
[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a jaw rotating device for machine tool drill forging device, comprising a machine case and a servo motor, the servo motor is fixed in the machine case by bolts, a mounting sleeve is arranged in the machine case, and the diameter of the opening on the front side of the machine case is greater than the diameter of the mounting sleeve, a hydraulic rod is fixed in the mounting sleeve, a disc is fixed to the output end of the hydraulic rod, and the disc is arranged in the mounting sleeve. A buffer mechanism is used to protect the output shaft of the servo motor during forging, and the buffer mechanism is connected between the output shaft of the servo motor and the mounting sleeve. A clamping mechanism is used to clamp and fix the workpiece, and the clamping mechanism cooperates with the buffer mechanism to realize self-locking of the workpiece clamping, and the clamping mechanism is installed in the mounting sleeve.
[0005] Preferably, the buffer mechanism comprises a fixed plate arranged on the side of the output shaft of the servo motor, a square rod is fixed on the side of the fixed plate close to the output shaft of the servo motor, and the square rod is in sliding connection with the output shaft of the servo motor, and a return spring is further fixed between the fixed plate and the output shaft of the servo motor. Through the sliding action between the square rod and the servo motor, the stability of the movement of the fixed plate can be ensured, and the synchronous rotation of the fixed plate and the output shaft of the servo motor can be ensured, thereby ensuring the normal operation of the device. Through the elastic action of the return spring, the basic force for automatic resetting of the fixed plate can be provided.
[0006] Preferably, the other side of the fixed plate is fixed with a circular truncated cone block, and the outer periphery of the circular truncated cone block is uniformly fixed with protruding teeth, and the circular truncated cone block is nested with the connecting seat fixed on the mounting sleeve, and the inner side of the connecting seat is uniformly fixed with clamping teeth, the clamping teeth and the protruding teeth cooperate to realize positioning, the nesting of the circular truncated cone block and the connecting seat can realize positioning, and the cooperation of the clamping teeth and the protruding teeth can realize locking, so as to ensure that the fixed plate and the mounting sleeve can rotate synchronously, thereby providing a basic guarantee for the normal operation of the device, and through the sliding action between the clamping teeth and the protruding teeth, the clamping teeth can be displaced under the action of keeping clamping with the protruding teeth, thereby realizing floating connection.
[0007] Preferably, the fixed plate is also fixed with fixed rods at equal angles, and the fixed rods are fixed with limiting tooth blocks, and the limiting tooth blocks are arranged on the side edges of the disc, and through the movement of the fixed plate, the fixed rods and the limiting tooth blocks can be moved synchronously, thereby providing a basic guarantee for realizing self-locking of the clamping plate, and further ensuring the stability of the device during forging.
[0008] Preferably, the mounting sleeve is also fixed with guide grooves on the outer side and symmetrically in front and back, and the guide grooves are in sliding connection with the sliding blocks, and the sliding blocks and one end of the spring shock absorber are fixed with each other, and the other end of the spring shock absorber is fixed in the case, and the spring shock absorber is symmetrically distributed above and below about the center line of the case, and through the sliding action between the guide grooves and the sliding blocks, the stability of the rotation of the mounting sleeve can be ensured, thereby ensuring the normal operation of the device, and through the action of the spring shock absorber, a basic guarantee for the buffering of the mounting sleeve during forging processing can be provided, thereby ensuring the stability of the device.
[0009] Preferably, the disc is also fixed with ear plates symmetrically above and below, and the ear plates are in sliding connection with the guide rods, and the guide rods are fixed in the case symmetrically above and below, and through the sliding and guiding action between the ear plates and the guide rods, the stability of the movement of the disc can be ensured.
[0010] Preferably, the clamping mechanism comprises a support rod fixed at one end with the mounting sleeve, and the other end of the support rod is fixed on the mounting disc, and the support rods are equally angularly distributed about the center of the mounting disc, and through the fixing action of the support rods, the stability of the mounting and fixation of the mounting disc can be ensured.
[0011] Preferably, the mounting disc is slidably connected with a moving block in the groove, the moving block is equiangularly distributed about the center of the mounting disc, a protrusion is fixed on the moving block, the protrusion is slidably connected with the groove on the mounting disc, one side of the moving block is fixed with a clamping plate, the clamping plate is arc-shaped, when the moving block is forced to move, the stability of the moving block can be ensured through the sliding guiding action between the protrusion and the groove on the mounting disc, and the clamping plate can be moved through the movement of the moving block, so that the distance between the plurality of clamping plates can be adjusted, thereby the workpieces of different sizes can be clamped and fixed, and the adaptability of the device is improved.
[0012] Preferably, the moving block is connected with one end of the connecting rod through a rotating shaft, the other end of the connecting rod is connected with the disc through a rotating shaft, a gear is fixed on the rotating shaft connecting the connecting rod with the moving block, the gear is positioned by cooperating with the limiting tooth block, the gear and the limiting tooth block are one-to-one corresponding, when the fixed plate moves due to impact and vibration, the limiting tooth block can be moved synchronously, the connecting rod can be locked through the clamping and limiting action between the limiting tooth block and the gear, so that the clamping plate is locked, the loosening between the clamping plate and the workpiece caused by forging impact is avoided, and the stability of the workpiece is ensured.
[0013] A machine tool drill bit is produced by a machine tool drill bit forging device using a jaw head rotating device.
[0014] Compared with the prior art, the machine tool drill bit forging device using the jaw head rotating device and the machine tool drill bit have the following beneficial effects: 1. The machine tool drill bit forging device using the jaw head rotating device and the machine tool drill bit, by arranging the buffer mechanism composed of the circular block, the clamping tooth, the reset spring and the sliding square rod, when the forging impact force is transmitted to the mounting sleeve, the connecting seat will be displaced relative to the circular block, the radial impact force is converted into the axial force for sliding the circular block along the motor shaft by the inclined surface structure of the circular block, and the axial force is absorbed by the reset spring, in this process, the impact force is digested by the buffer mechanism through the sliding connection of the square rod and the motor output shaft, so that the impact is not directly applied to the servo motor, the service life of the motor is greatly prolonged, and the maintenance cost is reduced. 2. The machine tool drill bit forging device using the jaw head rotating device and the machine tool drill bit, the buffer mechanism is synchronously driven to clamp and lock when the circular block axially slides due to impact, the fixed rod and the limiting tooth block fixed on the circular block move, the limiting tooth block is rapidly engaged with the gear on the connecting rod rotating shaft to realize locking, so that the mechanical locking of the clamping mechanism is automatically triggered during the forging impact process, the loosening of the clamping plate or the displacement of the workpiece caused by vibration is effectively prevented, the absolute stability of the workpiece clamping during the forging process is ensured, and the machining precision and the operation safety are improved. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1This is a three-dimensional structural diagram of the chassis of the present invention, viewed from below. Figure 2 This is a frontal three-dimensional structural diagram of the chassis of the present invention; Figure 3 This is a three-dimensional structural diagram of the frustum block and connecting seat of the present invention in a disassembled state; Figure 4 This is a frontal cross-sectional three-dimensional structural diagram of the mounting sleeve of the present invention; Figure 5 This is a frontal three-dimensional structural diagram of the disk and clamping mechanism of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle.
[0016] In the diagram: 1. Chassis; 2. Servo motor; 3. Buffer mechanism; 301. Fixing plate; 302. Square rod; 303. Return spring; 304. Frustum block; 305. Protruding tooth; 306. Connecting seat; 307. Clamping tooth; 308. Fixing rod; 309. Limiting tooth block; 4. Mounting sleeve; 401. Guide groove; 402. Slider; 403. Spring shock absorber; 5. Hydraulic rod; 6. Disc; 601. Ear plate; 602. Guide rod; 7. Clamping mechanism; 701. Support rod; 702. Mounting plate; 703. Moving block; 704. Protrusion; 705. Clamping plate; 706. Connecting rod; 707. Gear. 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 1-6 The present invention provides a technical solution: a pliers rotating device for a machine tool drill bit forging device, including a housing 1 and a servo motor 2. The servo motor 2 is fixed inside the housing 1 by bolts. An mounting sleeve 4 is provided inside the housing 1, and the diameter of the front opening of the housing 1 is larger than the diameter of the mounting sleeve 4. A hydraulic rod 5 is fixed inside the mounting sleeve 4, and a disc 6 is fixed at the output end of the hydraulic rod 5. The disc 6 is disposed inside the mounting sleeve 4. The buffer mechanism 3 is used to protect the output shaft of the servo motor 2 during forging. The buffer mechanism 3 is connected between the output shaft of the servo motor 2 and the mounting sleeve 4. The clamping mechanism 7 is used to clamp and fix the workpiece, and the clamping mechanism 7, together with the buffer mechanism 3, can achieve the self-locking function of clamping the workpiece. The clamping mechanism 7 is installed in the mounting sleeve 4.
[0019] The disc 6 is also symmetrically fixed with ear plates 601, and the ear plates 601 are slidably connected to the guide rods 602. The guide rods 602 are symmetrically fixed inside the housing 1. The clamping mechanism 7 includes a support rod 701 with one end fixed to the mounting sleeve 4, and the other end of the support rod 701 is fixed to the mounting plate 702. The support rods 701 are equidistant from the center of the mounting plate 702. A movable block 703 is slidably connected in a slot on the mounting plate 702. The movable block 703 is equidistant from the center of the mounting plate 702. The movable block 703 is fixed with... There is a protrusion 704, and the protrusion 704 is slidably connected to the groove on the mounting plate 702. A clamping plate 705 is fixed on one side of the movable block 703, and the clamping plate 705 has an arc-shaped structure. The movable block 703 is connected to one end of the connecting rod 706 through a rotating shaft, and the other end of the connecting rod 706 is connected to the disc 6 through a rotating shaft. A gear 707 is fixed on the rotating shaft connecting the connecting rod 706 and the movable block 703. The gear 707 cooperates with the limiting tooth block 309 to achieve the positioning function. The gear 707 and the limiting tooth block 309 are distributed in a one-to-one correspondence. When using the pliers rotating device of the drill bit forging apparatus of this machine tool, such as Figures 1-6 As shown, the device is first installed on a lifting platform that moves up and down. At this time, the height of the clamping mechanism 7 is higher than that of the forging platform. Then, the drill bit blank to be forged is clamped and fixed. By placing the drill bit blank between multiple clamping plates 705, and controlling the extension of the hydraulic rod 5, the disc 6 can be moved towards the mounting plate 702. With the sliding guidance between the ear plate 601 and the guide rod 602, the stability of the disc 6's movement can be ensured. When the disc 6 moves, the connecting rod 706 is rotated under force. Since the gear 707 and the limiting tooth block 309 are in a separated state at this time, the connecting rod 706 can be rotated normally. The rotation of the connecting rod 706 can drive the movement. The moving block 703 moves towards the center of the mounting plate 702. With the sliding guide action between the protrusion 704 and the groove on the mounting plate 702, the stability of the moving block 703 can be ensured. The movement of the moving block 703 can simultaneously drive the clamping plate 705 to move closer to the drill bit blank. Once all the clamping plates 705 are in contact with the drill bit blank, the drill bit blank can be clamped and fixed. At this time, the hydraulic rod 5 applies force, which can make the clamping plate 705 clamp the drill bit blank, ensuring the stability of the drill bit blank. According to the above principle, when it is necessary to release the fixing of the drill bit blank, it is only necessary to retract the hydraulic rod 5 to make the clamping plate 705 act in the opposite direction, thereby realizing the unlocking of the drill bit blank. The outer side of the mounting sleeve 4 is also fixed with a guide groove 401 symmetrically in front and back, and the guide groove 401 is in sliding connection with the sliding block 402, and the sliding block 402 is fixed with one end of the spring shock absorber 403, and the other end of the spring shock absorber 403 is fixed in the case 1, and the spring shock absorber 403 is symmetrically distributed about the center line of the case 1; After the drill blank is clamped and fixed, the whole device can be lowered by the lifting platform until the lower end surface of the clamped and fixed drill blank contacts the forging platform, and the drill blank is located between the forging head and the forging platform, so that subsequent forging processing can be carried out. During forging, the forging head can impact to realize the forging of the drill blank. When the angle of the drill blank is adjusted, the servo motor 2 drives the square rod 302 and the circular block 304 to rotate, and the positioning action between the circular block 304 and the clamping tooth 307 can synchronously drive the connecting seat 306 and the mounting sleeve 4 to rotate, and the sliding action between the guide groove 401 and the sliding block 402 can ensure the stability of the rotation of the mounting sleeve 4. When the mounting sleeve 4 rotates, the disc 6, the clamping mechanism 7 and the clamped drill blank can be synchronously rotated to facilitate the forging processing; The buffer mechanism 3 comprises a fixed plate 301 arranged on the side of the output shaft of the servo motor 2, and the fixed plate 301 is fixed with a square rod 302 on the side close to the output shaft of the servo motor 2, and the square rod 302 is in sliding connection with the output shaft of the servo motor 2. The fixed plate 301 and the output shaft of the servo motor 2 are also fixed with a return spring 303. The other side of the fixed plate 301 is fixed with a circular block 304, and the circular block 304 is uniformly fixed with a convex tooth 305 on the outer periphery, and the circular block 304 is in nesting connection with the connecting seat 306 fixed on the mounting sleeve 4, and the connecting seat 306 is uniformly fixed with a clamping tooth 307 on the inner side, and the clamping tooth 307 cooperates with the convex tooth 305 to realize positioning action. The fixed plate 301 is also fixed with a fixed rod 308 at equal angles, and the fixed rod 308 is fixed with a limiting tooth block 309, and the limiting tooth block 309 is arranged on the side of the disc 6; During the forging process of the drill blank, as Figures 1-3When the forging head impacts the drill blank, the impact force will simultaneously act on the clamping mechanism 7 and the mounting sleeve 4, causing the mounting sleeve 4 to vibrate up and down under the action of the impact force. With the action of the spring shock absorber 403, the vibration buffering effect of the mounting sleeve 4 can be achieved. When the mounting sleeve 4 generates a certain displacement due to vibration, it will simultaneously drive the connecting seat 306 to move relative to the circular block 304. Through the inclined surface structure of the circular block 304, an axial force along the output shaft of the servo motor 2 can be generated on the circular block 304 when the connecting seat 306 moves relative to the circular block 304, so that the circular block 304 moves relative to the output shaft of the servo motor 2 under force. With the sliding guide action between the square bar 302 and the output shaft of the servo motor 2, the stability of the movement of the circular block 304 can be ensured. At this time, the return spring 303 is contracted under force, thereby realizing the protection effect of the output shaft of the servo motor 2, avoiding the direct action of the forging impact force on the output shaft of the servo motor 2 and causing damage to the device, effectively prolonging the service life of the device. When the circular block 304 moves relative to the output shaft of the servo motor 2, the fixed rod 308 and the limiting tooth block 309 can be simultaneously driven to move, so that the limiting tooth block 309 is engaged with the gear 707, realizing the reverse self-locking effect of the connecting rod 706, avoiding the influence of the forging impact on the stability of the clamping and fixation between the clamping plate 705 and the drill blank, and when the connecting seat 306 moves relative to the circular block 304, the radial sliding between the clamping teeth 307 and the protruding teeth 305 occurs at this time, but the protruding teeth 305 on the force side of the circular block 304 will not be separated from the clamping teeth 307. When the vibration is balanced under the action of the spring shock absorber 403, the circular block 304 can be reset through the action of the return spring 303 to ensure the normal operation of the device.
[0020] It should be noted that in this document, the terms "comprise", "comprise", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or inherent to such a process, method, article or device.
[0021] The principles and implementation manners of the present application are described by using specific examples in the present application, and the above examples are only used to help understand the method of the present application and its core idea. The above description is only the preferred implementation manner of the present application, and it should be noted that, due to the limited expression of the text, there are objectively infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, refinements or changes can be made without departing from the principles of the present application, and the above technical features can also be combined in an appropriate manner; the improvements, refinements, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, shall be regarded as the protection scope of the present application.
Claims
1. A pliers rotating device for a machine tool drill bit forging apparatus, comprising a housing (1) and a servo motor (2), wherein the servo motor (2) is fixed inside the housing (1) by bolts, characterized in that: The chassis (1) is provided with an installation sleeve (4), and the diameter of the front opening of the chassis (1) is larger than the diameter of the installation sleeve (4). A hydraulic rod (5) is fixed inside the installation sleeve (4), and a disc (6) is fixed at the output end of the hydraulic rod (5). The disc (6) is located inside the installation sleeve (4). A buffer mechanism (3) is used to protect the output shaft of the servo motor (2) during forging. The buffer mechanism (3) is connected between the output shaft of the servo motor (2) and the mounting sleeve (4). The clamping mechanism (7) is used to clamp and fix the workpiece, and the clamping mechanism (7) and the buffer mechanism (3) can achieve the self-locking function of clamping the workpiece. The clamping mechanism (7) is installed in the mounting sleeve (4).
2. The pliers rotating device for a machine tool drill bit forging apparatus according to claim 1, characterized in that: The buffer mechanism (3) includes a fixed plate (301) disposed on the side of the output shaft of the servo motor (2), and a square rod (302) is fixed on the side of the fixed plate (301) near the output shaft of the servo motor (2), and the square rod (302) is slidably connected to the output shaft of the servo motor (2). A return spring (303) is also fixed between the fixed plate (301) and the output shaft of the servo motor (2).
3. The pliers rotating device for a machine tool drill bit forging apparatus according to claim 2, characterized in that: A frustum block (304) is fixed on the other side of the fixing plate (301), and protruding teeth (305) are evenly fixed on the outer periphery of the frustum block (304). The frustum block (304) and the connecting seat (306) fixed on the mounting sleeve (4) are nested together. Meanwhile, locking teeth (307) are evenly fixed on the inner side of the connecting seat (306). The locking teeth (307) and the protruding teeth (305) cooperate to achieve positioning.
4. The pliers rotating device for a machine tool drill bit forging apparatus according to claim 3, characterized in that: The fixing plate (301) is also fixed with a fixing rod (308) at equal angles, and a limiting tooth block (309) is fixed on the fixing rod (308), and the limiting tooth block (309) is set on the side of the disc (6).
5. The pliers rotating device for a machine tool drill bit forging apparatus according to claim 4, characterized in that: The mounting sleeve (4) is also symmetrically fixed with guide grooves (401) on the front and back, and the guide grooves (401) and the slider (402) are slidably connected. The slider (402) is fixed to one end of the spring damper (403), while the other end of the spring damper (403) is fixed inside the chassis (1). The spring dampers (403) are symmetrically distributed about the center line of the chassis (1).
6. The pliers rotating device for a machine tool drill bit forging apparatus according to claim 5, characterized in that: The disc (6) is also symmetrically fixed with ear plates (601) on the upper and lower sides, and the ear plates (601) and the guide rod (602) are slidably connected, and the guide rod (602) is symmetrically fixed inside the chassis (1).
7. The pliers rotating device for a machine tool drill bit forging apparatus according to claim 6, characterized in that: The clamping mechanism (7) includes a support rod (701) with one end fixed to the mounting sleeve (4), and the other end of the support rod (701) is fixed on the mounting plate (702), and the support rod (701) is distributed at equal angles with respect to the center of the mounting plate (702).
8. The pliers rotating device for a machine tool drill bit forging apparatus according to claim 7, characterized in that: A movable block (703) is slidably connected in the groove on the mounting plate (702), and the movable blocks (703) are distributed at equal angles with respect to the center of the mounting plate (702). A protrusion (704) is fixed on the movable block (703), and the protrusion (704) is slidably connected to the groove on the mounting plate (702). A clamping plate (705) is fixed on one side of the movable block (703), and the clamping plate (705) has an arc-shaped structure.
9. A pliers rotating device for a machine tool drill bit forging apparatus according to claim 8, characterized in that: The movable block (703) is connected to one end of the connecting rod (706) via a rotating shaft, and the other end of the connecting rod (706) is connected to the disk (6) via a rotating shaft. A gear (707) is fixed on the rotating shaft connecting the connecting rod (706) and the movable block (703). At the same time, the gear (707) cooperates with the limiting tooth block (309) to achieve the positioning function. The gear (707) and the limiting tooth block (309) are distributed in a one-to-one correspondence.
10. A machine tool drill bit, applied to the pliers rotating device for a machine tool drill bit forging apparatus as described in claim 9, characterized in that: The machine tool drill bit is produced using a pliers rotating device in a machine tool drill bit forging device.