CN220921511U - Flat head structure for machining and machining equipment - Google Patents

Abstract

The utility model provides a flat head structure for machining and machining equipment, which comprises a machine head base and a cutter shaft, wherein the machine head base is provided with a mounting through hole, one end of the cutter shaft is rotatably arranged in the mounting through hole, and the other end of the cutter shaft is provided with a blade for flat head operation; the cutter shaft is externally connected with a radial support piece, the radial support piece is arranged between the blade and the machine head base, and the radial support piece is used for limiting radial movement between the mounting through hole and the cutter shaft during flat head operation. According to the utility model, the radial supporting piece positioned between the blade and the machine head base is arranged on the cutter shaft, so that the end of the blade on the cutter shaft for flat head operation obtains radial supporting force, so that the coaxiality between the mounting through hole and the cutter shaft is maintained during working, obvious radial movement between the cutter shaft and the mounting through hole is prevented, cutting and shaking are avoided, the machining precision is ensured, the machining quality is improved, the service life of equipment parts is prolonged, and the production cost is reduced.

Description

Flat head structure for machining and machining equipment

Technical Field

The utility model relates to the technical field of machining, in particular to a flat head structure for machining and machining equipment.

Background

A machining apparatus such as a thread rolling machine is a mechanical apparatus for machining threads from sheet metal or other materials. When the steel bar is used, in order to improve the connection convenience and connection accuracy of the steel bar, the end part of the steel bar is usually required to be subjected to head cutting and thread rolling operation, so that the construction quality of a building using the steel bar is improved.

In order to improve the production efficiency of a machined part, in the prior art, a device for rolling and cutting a head of a reinforcing steel bar is a device for integrating flat head rolling of the reinforcing steel bar, which is disclosed in a patent CN212822403U, wherein a clamp of a bar jacking device is arranged on a sliding bottom plate at the front end of a bar jacking chuck device, a lifting cylinder is arranged on the sliding bottom plate and is propped against a connecting movable plate, a flat head device is arranged on the connecting movable plate, a flat head driven wheel and a flat head cutting circular saw are connected, a reinforcing steel bar clamping vice is arranged at the front end of the clamp of the bar jacking device on a lower body of a machine tool, the reinforcing steel bar clamping vice clamps the reinforcing steel bar, and the reinforcing steel bar is clamped and limited to rotate during use.

The existing equipment can meet the rolling thread flat head demand, but the flat head technology is obtained by adopting circular saw processing, and because the outer edge of the saw blade is cut when the saw blade is used for cutting, and the cutting is needed from one side of the steel bar to the other side, the problems that the cutting shake, the offset and the like affect the processing precision are easy to occur, the processing quality of the steel bar is affected, and the cutting shake also easily causes the damage of a transmission structure, and the service life is short.

Disclosure of utility model

In order to solve at least one aspect of the above problems, the present utility model firstly provides a flat head structure for machining, comprising a machine head base and a cutter shaft, wherein the machine head base is provided with a mounting through hole, one end of the cutter shaft is rotatably mounted in the mounting through hole, and the other end of the cutter shaft is provided with a blade for flat head operation; the cutter shaft is externally connected with a radial support piece, the radial support piece is arranged between the blade and the machine head base, and the radial support piece is used for limiting radial movement between the mounting through hole and the cutter shaft during flat head operation.

Optionally, the device further comprises an outer disc, wherein the outer disc is provided with a bearing mounting hole for mounting the radial supporting piece, and the outer disc is connected with the machine head base; the radial support is a support bearing or a support shaft sleeve.

Optionally, the device comprises a main shaft and a thread rolling machine head, wherein the thread rolling machine head is coaxially arranged on the output end of the main shaft, the thread rolling machine head is provided with a thread rolling cavity, and a plurality of thread rolling wheels are arranged in the thread rolling cavity; the output end of the main shaft is of a hollow structure, one end of the cutter shaft is rotatably arranged in the hollow structure of the main shaft, and the cutter shaft and the main shaft are coaxially arranged; the other end of the cutter shaft is a cutter head which extends out of the main shaft and extends into the thread rolling cavity, and the cutter head is provided with the cutter blade; the radial support piece is arranged in one side of the thread rolling machine head, which is close to the main shaft, and one end of the cutter shaft extending into the thread rolling cavity is arranged in the radial support piece.

Optionally, the machine head base is provided with an inner cavity, one end of the machine head base is connected with the main shaft, the other end of the machine head base is connected with the thread rolling machine head, and the inner cavity is communicated with the hollow structure of the main shaft and the thread rolling cavity; the outer disc is arranged between the machine head base and the thread rolling machine head, and the bearing mounting hole penetrates through the inner cavity and the thread rolling cavity.

Optionally, a planetary gear transmission mechanism is arranged between the cutter shaft and the main shaft, the planetary gear transmission mechanism comprises a water-cooling gear ring, a duplex gear and a central gear, the central gear is arranged in the inner cavity and fixedly sleeved on the cutter shaft, and the water-cooling gear ring is provided with an inner gear ring; the gear ring mounting seat is sleeved outside the main shaft and fixed on the gear ring mounting seat, the duplex gear is rotatably arranged in the inner cavity, one end of the duplex gear is meshed with the inner gear ring, and the other end of the duplex gear is meshed with the central gear.

Optionally, the machine head further comprises a plurality of auxiliary gears, wherein the auxiliary gears are rotatably installed in the inner cavity of the machine head base, and each auxiliary gear is meshed with the central gear; the auxiliary gears are arranged in two, and the two auxiliary gears and the duplicate gear are distributed in an equilateral triangle with the axle center of the central gear as the center.

Optionally, a planetary gear transmission mechanism is arranged between the cutter shaft and the main shaft, the planetary gear transmission mechanism comprises a water-cooling gear ring, a duplex gear, a transition gear and a central gear, the central gear is arranged in the inner cavity and fixedly sleeved on the cutter shaft, and the water-cooling gear ring is provided with an inner gear ring; the gear ring mounting seat is sleeved outside the main shaft and fixed on the gear ring mounting seat, the duplex gear is rotatably mounted in the inner cavity, one end of the duplex gear is meshed with the inner gear ring, and the transition gear is rotatably mounted in the inner cavity and is meshed with the other end of the duplex gear and the central gear simultaneously.

Optionally, a water inlet hole suitable for being communicated with a water supply device is formed in the top end of the water-cooled gear ring, and one end, far away from the water supply device, of the water inlet hole corresponds to the top position of the inner gear ring.

Optionally, a communicating hole penetrating through the inner cavity and the outside is formed in the side wall of the machine head base, and a plurality of teeth are arranged on one end, away from the meshing with the central gear, of the duplex gear, extend out of the machine head base from the communicating hole and are meshed with the inner gear ring.

Compared with the prior art, the flat head structure for machining is characterized in that the radial supporting piece is arranged on the cutter shaft and positioned between the blade and the machine head base, so that the end of the blade used for flat head operation on the cutter shaft is radially supported, the coaxiality between the mounting through hole and the cutter shaft is kept during working, obvious radial movement between the cutter shaft and the mounting through hole is prevented, cutting and shaking are avoided, the machining precision is ensured, the machining quality is improved, the service life of equipment parts is prolonged, and the production cost is reduced.

In addition, the utility model provides a machining device comprising a flat head structure for machining as described above.

Compared with the prior art, the machining equipment and the flat head structure for machining have the same advantages as those of the flat head structure for machining, and the advantages are not repeated here.

Drawings

FIG. 1 is an exploded view of a flat head structure for machining in accordance with an embodiment of the present utility model;

FIG. 2 is a burst view of an outer disc and support bearing of an embodiment of the present utility model;

FIG. 3 is a partial block diagram first of a flat head structure for machining in accordance with an embodiment of the present utility model;

FIG. 4 is a second partial block diagram of a flat head structure for machining in accordance with an embodiment of the present utility model;

FIG. 5 is a block diagram of a handpiece base in accordance with an embodiment of the present utility model;

FIG. 6 is a cross-sectional view of a water-cooled ring gear according to an embodiment of the present utility model;

Fig. 7 is a structural view of a planetary gear transmission mechanism according to another embodiment of the present utility model.

Reference numerals illustrate:

1. A main shaft; 2. a thread rolling machine head; 3. a cutter shaft; 31. a blade; 4. a planetary gear transmission mechanism; 41. water-cooling the gear ring; 411. an inner gear ring; 412. a water inlet hole; 42. a duplex gear; 43. a sun gear; 44. a transition gear; 5. a support bearing; 6. a machine head base; 61. an inner cavity; 62. a communication hole; 63. mounting through holes; 7. an outer disk; 71. bearing mounting holes; 8. and a gear ring mounting seat.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the description of the present utility model, it is to be understood that the terms "upper", "lower", etc. indicate an orientation or positional relationship based on the orientation or positional relationship when the product is normally used.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

The embodiment of the utility model provides a flat head structure for machining, which is shown in combination with figures 1, 2, 3 and 4 and comprises a machine head base 6 and a cutter shaft 3, wherein the machine head base 6 is provided with a mounting through hole 63, one end of the cutter shaft 3 is rotatably arranged in the mounting through hole 63, and the other end of the cutter shaft 3 is provided with a blade 31 for flat head operation; the cutter shaft 3 is externally connected with a radial support member, the radial support member is arranged between the blade 31 and the machine head base 6, and the radial support member is used for limiting radial movement between the mounting through hole 63 and the cutter shaft 3 during flat head operation.

Wherein, during the flat head operation, the cutter shaft 3 rotates in the mounting through hole 63 at a high speed to drive the blade 31 to act for the flat head operation; the radial support piece is connected with the cutter shaft 3, so that the rotary motion of the cutter shaft 3 is not limited, and only the motion of the cutter shaft 3 in the radial direction is limited, namely, the radial support piece provides a transverse support force perpendicular to the axial direction for the cutter shaft 3, and one end, close to the blade 31, of the cutter shaft 3 is prevented from being in a suspended state; the radial support member is connected with the machine head base 6 and can also be connected with other parts of machining equipment, so that the radial support member can firmly support the cutter shaft 3, and the coaxiality between the mounting through hole 63 and the cutter shaft 3 can be kept, thereby preventing the cutter shaft 3 from moving during working.

In the flat head structure for machining in the embodiment, the radial supporting piece positioned between the blade 31 and the machine head base 6 is arranged on the cutter shaft 3, so that the end of the blade 31 used for flat head operation on the cutter shaft 3 obtains radial supporting force to keep the coaxiality between the mounting through hole 63 and the cutter shaft 3 during working, obvious radial movement between the cutter shaft 3 and the mounting through hole 63 is prevented, cutting and shaking are avoided, the machining precision is ensured, the machining quality is improved, the service life of equipment parts is prolonged, and the production cost is reduced.

Optionally, as shown in connection with fig. 1 and 2, the device further comprises an outer disc 7, wherein the outer disc 7 is provided with a bearing mounting hole 71 for mounting the radial support, and the outer disc 7 is connected with the machine head base 6; the radial support is a support bearing 5 or a support sleeve.

The bearing mounting hole 71 is formed in the center of the outer disc 7, the outer disc 7 is fixedly connected with the machine head base 6, when the radial supporting piece is the supporting bearing 5, the inner wall of the supporting bearing 5 is fixedly connected with the cutter shaft 3, the outer wall of the supporting bearing 5 is fixedly connected with the bearing mounting hole 71, and the cutter shaft 3 can normally rotate during flat head operation by utilizing the rotating structural characteristics of the supporting bearing 5; when the radial support piece is a support shaft sleeve, the inner wall of the support shaft sleeve is fixedly connected with the cutter shaft 3, the outer wall of the support shaft sleeve is in rotary sliding connection with the bearing mounting hole 71, the cutter shaft 3 can normally rotate when the flat head operation is realized, the support shaft sleeve is preferably a graphite shaft sleeve, and the lubricity of graphite materials can be increased when the support shaft sleeve rotates.

Optionally, as shown in fig. 1, 2 and 3, the device comprises a main shaft 1 and a thread rolling machine head 2, wherein the thread rolling machine head 2 is coaxially installed on the output end of the main shaft 1, the thread rolling machine head 2 is provided with a thread rolling cavity, and a plurality of thread rolling wheels are arranged in the thread rolling cavity; the output end of the main shaft 1 is of a hollow structure, one end of the cutter shaft 3 is rotatably arranged in the hollow structure of the main shaft 1, and the cutter shaft 3 and the main shaft 1 are coaxially arranged; the other end of the cutter shaft 3 is a cutter head which extends out of the main shaft 1 and extends into the thread rolling cavity, and the cutter head is provided with the cutter blade 31; the radial support piece is arranged in one side of the thread rolling machine head 2, which is close to the main shaft 1, and one end of the cutter shaft 3 extending into the thread rolling cavity is arranged in the radial support piece.

The thread rolling machine head 2 is coaxially arranged at the output end of the main shaft 1, so that the main shaft 1 can drive the thread rolling machine head 2 to rotate, a plurality of thread rolling wheels are arranged in a thread rolling cavity of the thread rolling machine head 2, and after the end part of a steel bar to be processed stretches into the thread rolling cavity, the end part of the steel bar can be subjected to thread rolling processing through the thread rolling wheels. The output end of the main shaft 1 is of a hollow structure, and the hollow structure of the main shaft 1 is communicated with the thread rolling cavity, so that conditions are provided for the cutter head of the follow-up cutter shaft 3 to extend into the thread rolling cavity to carry out head cutting operation on the end part of the reinforcing steel bar. One end of the cutter shaft 3 is sleeved with a shaft sleeve and is rotatably arranged in the hollow structure of the main shaft 1, so that the cutter shaft 3 can rotate in the hollow structure of the main shaft 1, the subsequent head cutting processing requirement is met, the cutter shaft 3 can slide along the axial direction of the main shaft 1, and when the subsequent reinforcing steel bars are fed along the axial direction of the main shaft 1 due to the thread rolling requirement, the telescopic movement of the cutter shaft 3 can be used for adapting, and the problem that the cutter shaft 3 or the main shaft 1 is propped up and damaged is avoided. It is worth noting that the hollow structure of the spindle 1 is also internally provided with a propping spring, two ends of the propping spring respectively prop against the bottom wall of the hollow structure of the spindle 1 and the end part of the cutter shaft 3, so that axial supporting force is provided for the cutter shaft 3, the cutter shaft 3 can move along the axial direction of the spindle 1, the adaptability of the cutter shaft 3 is improved, and meanwhile, an end face bearing is also arranged between the propping spring and the hollow bottom wall of the spindle 1 or between the propping spring and the end part of the cutter shaft 3, so that the rotary motion of the cutter shaft 3 relative to the spindle 1 can be better adapted, and the structural design is more reasonable. The embodiment realizes the function of simultaneously processing the thread rolling operation and the flat head operation, and has high production efficiency.

Optionally, as shown in fig. 1 to 5, the head base 6 is provided with an inner cavity 61, one end of the head base 6 is connected with the spindle 1, the other end of the head base 6 is connected with the thread rolling head 2, and the inner cavity 61 is communicated with the hollow structure of the spindle 1 and the thread rolling cavity; the outer disc 7 is arranged between the die head base 6 and the thread rolling die head 2, and the bearing mounting hole 71 penetrates through the inner cavity 61 and the thread rolling cavity.

The machine head base 6 is arranged between the thread rolling machine head 2 and the main shaft 1, and the machine head base 6 is used as an intermediate structure of the thread rolling machine head 2 arranged on the main shaft 1; the machine head base 6 is provided with an inner cavity 61, and an installation space is provided for the subsequent planetary gear transmission mechanism 4 through the inner cavity 61; one end of the machine head base 6 is connected with the main shaft 1, so that the main shaft 1 can drive the machine head base 6 to rotate, and the other end of the machine head base 6 is connected with the thread rolling machine head 2, so that the machine head base 6 can drive the thread rolling machine head 2 to rotate, and power transmission between the main shaft 1 and the thread rolling machine head 2 is realized. Meanwhile, the inner cavity 61 is communicated with the hollow structure of the main shaft 1 and the thread rolling cavity, so that one end of a cutter head of the cutter shaft 3 can enter the inner cavity 61 from the hollow structure of the main shaft 1 and enter the thread rolling cavity of the thread rolling machine head 2 through the inner cavity 61, and conditions are provided for the follow-up cooperation of the cutter shaft 3 in the inner cavity 61 with the planetary gear transmission mechanism 4 and the end cutting processing of the reinforcing steel bar extending into the thread rolling cavity. In addition, the planetary gear transmission mechanism 4 is arranged on the machine head base 6, so that the subsequent machine head base 6 can be used as a planet carrier of the planetary gear transmission mechanism 4, and the installation requirement of each structural part in the planetary gear transmission mechanism 4 is met.

The outer disc 7 is fixedly connected with the machine head base 6 and the thread rolling machine head 2, so that the power transmitted to the machine head base 6 by the spindle 1 can be transmitted to the thread rolling machine head 2 through the outer disc 7, and the drive of the thread rolling machine head 2 is realized. In addition, the bearing mounting hole 71 of the outer disc 7 penetrates through the inner cavity 61 and the thread rolling cavity, namely, the communication between the inner cavity 61 and the thread rolling cavity is realized through the bearing mounting hole 71, so that conditions are provided for the cutter head of the cutter shaft 3 which subsequently enters the inner cavity 61 to enter the thread rolling cavity. And, install support bearing 5 in bearing mounting hole 71, provide installation and support space for support bearing 5 promptly through outer dish 7 to for the tool bit one end of arbor 3 provides the support, make the both ends of arbor 3 can be supported by axle sleeve and support bearing 5 respectively, improved arbor 3's stability, guaranteed machining precision. It is worth pointing out that the support bearing 5 can slide along the axial direction of the cutter shaft 3 in the bearing mounting seat or the cutter shaft 3 can slide in the support bearing 5 along the axial direction of the cutter shaft 3, so that the cutter shaft 3 can adapt to the movement requirement of sliding along the axial direction of the cutter shaft 3 relative to the thread rolling machine head 2 while one end of the cutter head of the cutter shaft 3 is supported by the support bearing 5, and the problem of excessively propping up the cutter shaft 3 during feeding of reinforcing steel bars is prevented.

Optionally, as shown in fig. 1 to 5, a planetary gear transmission mechanism 4 is disposed between the cutter shaft 3 and the main shaft 1, the planetary gear transmission mechanism 4 includes a water-cooled gear ring 41, a duplex gear 42, and a sun gear 43, the sun gear 43 is installed in the inner cavity 61 and is fixedly sleeved on the cutter shaft 3, and the water-cooled gear ring 41 is provided with an inner gear ring 411; the water-cooling gear ring 41 is sleeved outside the main shaft 1 and is fixed on the gear ring mounting seat 8, the duplex gear 42 is rotatably arranged in the inner cavity 61, one end of the duplex gear 42 is meshed with the inner gear ring 411, and the other end of the duplex gear 42 is meshed with the central gear 43.

The central gear 43 is installed in the inner cavity 61 of the machine head base 6 and fixedly sleeved on the cutter shaft 3, so that the central gear 43 can drive the cutter shaft 3 to rotate, meanwhile, the water-cooled gear ring 41 is sleeved outside the main shaft 1 and is fixed on the gear ring installation seat 8, so that the main shaft 1 can rotate relative to the water-cooled gear ring 41, and the duplex gear 42 is rotatably installed in the inner cavity 61 of the machine head base 6, wherein the duplex gear 42 serves as a planetary gear, and the machine head base 6 serves as a planetary carrier; one end of the duplex gear 42 is meshed with the annular gear 411, the other end of the duplex gear 42 is meshed with the central gear 43, so that when the main shaft 1 drives the machine head base 6 to rotate, the duplex gear 42 rotates around the water-cooled annular gear 41 and achieves autorotation, the central gear 43 is driven to rotate through the duplex gear 42, driving of the cutter shaft 3 is achieved, and conditions are provided for end cutting machining of the cutter shaft 3 on the end portions of the steel bars.

The cutter shaft 3 and the main shaft 1 are coaxially arranged, the other end of the cutter shaft 3, which is not sleeved with the shaft sleeve, is provided with a cutter head, the cutter head of the cutter shaft 3 extends out of the main shaft 1 and extends into the thread rolling cavity, and meanwhile, the cutter head is provided with a blade 31, so that the end part of a reinforcing steel bar which subsequently extends into the thread rolling cavity can contact the blade 31 on the cutter head of the cutter shaft 3, and the cutter head of the reinforcing steel bar is cut by rotating the cutter shaft 3 relative to the reinforcing steel bar. The planetary gear transmission mechanism 4 is arranged on the machine head base 6 and is positioned between the supporting bearing 5 and the shaft sleeve of the cutter shaft 3, namely, when the main shaft 1 rotates, the cutter shaft 3 can be driven to rotate through the planetary gear transmission mechanism 4, so that the main shaft 1 can drive the thread rolling machine head 2 to rotate and the cutter shaft 3 to rotate, the synchronous processing requirements of thread rolling and cutting are met, and the processing efficiency is improved.

In this embodiment, the supporting bearing 5 is disposed on one side of the thread rolling machine head 2 near the spindle 1, and the end of the arbor 3 extending into the thread rolling cavity is mounted in the supporting bearing 5, so that two ends of the arbor 3 can be supported by the shaft sleeve and the supporting bearing 5 respectively, thereby maintaining the uniformity of stress of the arbor 3, preventing the problem that the arbor 3 is prone to excessive wear and inclination due to the fact that only one end of the arbor 3 is mounted in the spindle 1 through the shaft sleeve, in addition, the planetary gear transmission mechanism 4 is also disposed between the supporting bearing 5 and the shaft sleeve, so that the part of the planetary gear transmission mechanism 4 acting on the arbor 3 is also between the supporting bearing 5 and the shaft sleeve, and the transverse acting force applied by the planetary gear transmission mechanism 4 to the arbor 3 is located between the shaft sleeve and the supporting bearing 5, which is also helpful to avoid the problem that the arbor 3 is excessively worn due to uneven stress at two ends of the arbor 3, and meanwhile, the problem that the arbor 3 is not centered due to excessive inclination of the arbor 3 after the partial position is prevented, and the service life of the cutter head is prolonged.

Optionally, a plurality of auxiliary gears are further included, each of which is rotatably mounted in the inner cavity 61 of the handpiece base 6, and each of which is engaged with the sun gear 43; the auxiliary gears are provided in two, and the two auxiliary gears and the duplicate gear 42 are distributed in an equilateral triangle shape with the axis of the sun gear 43 as the center.

Wherein, in order to promote the atress homogeneity of arbor 3, set up a plurality of auxiliary gears in the inner chamber 61 of aircraft nose base 6, a plurality of auxiliary gears all can be in the inner chamber 61 of aircraft nose base 6 rotation, simultaneously, every auxiliary gear all meshes with sun gear 43, has increased the support of aircraft nose base 6 to arbor 3 through the auxiliary gear for the transverse acting force of duplex gear 42 that arbor 3 received can be offset through the auxiliary gear, has further guaranteed arbor 3 atress homogeneity, has further ensured the machining precision, has prolonged life. The number of the auxiliary gears in the machine head base 6 is preferably two, and the two auxiliary gears and the duplicate gear 42 are distributed in an equilateral triangle shape by taking the axle center of the central gear 43 as the center, so that the duplicate gear 42 and the two auxiliary gears can be uniformly distributed on the outer side of the central gear 43 and simultaneously support the central gear 43, and the stress of the central gear 43 can be more uniform while the stable support of the central gear 43 is ensured.

In another embodiment, as shown in fig. 7, a planetary gear transmission mechanism 4 is disposed between the cutter shaft 3 and the main shaft 1, the planetary gear transmission mechanism 4 includes a water-cooled gear ring 41, a duplex gear 42, a transition gear 44, and a sun gear 43, the sun gear 43 is installed in the inner cavity 61 and is fixedly sleeved on the cutter shaft 3, and the water-cooled gear ring 41 is provided with an inner gear ring 411; the water-cooled gear ring 41 is sleeved outside the main shaft 1 and is fixed on the gear ring mounting seat 8, the duplex gear 42 is rotatably mounted in the inner cavity 61, one end of the duplex gear 42 is meshed with the inner gear ring 411, and the transition gear 44 is rotatably mounted in the inner cavity 61 and is meshed with the other end of the duplex gear 42 and the sun gear 43.

The central gear 43 is installed in the inner cavity 61 and fixedly sleeved on the cutter shaft 3, so that the central gear 43 can drive the cutter shaft 3 to rotate, meanwhile, the water-cooled gear ring 41 is sleeved outside the main shaft 1 and is fixed on the gear ring installation seat 8, so that the main shaft 1 can rotate relative to the water-cooled gear ring 41, the machine head base 6 can rotate relative to the water-cooled gear ring 41, the duplex gear 42 is rotatably installed in the inner cavity 61 of the machine head base 6, so that the duplex gear 42 can rotate along with the machine head base 6, one end of the duplex gear 42 is meshed with the annular gear 411, the transition gear 44 is rotatably installed in the inner cavity 61 of the machine head base 6, the transition gear 44 can be meshed with the other end of the duplex gear 42 and the central gear 43 at the same time, namely, the machine head base 6 serves as a planet carrier, the transition gear 44 and the duplex gear 42 integrally serve as planet gears, so that when the main shaft 1 drives the machine head base 6 to rotate relative to the water-cooled gear ring 41, the duplex gear 42 rotates around the water-cooled gear ring 41 and achieves autorotation, the duplex gear 42 transmits power to the central gear 43, so that the cutter shaft 3 is driven to rotate, and the flat head is processed.

In the embodiment, the transition gear 44 is arranged between the duplex gear 42 and the central gear 43, so that miniaturization of the gear ring of the central gear 43 can be realized, and on the premise of ensuring power transmission, the speed acceleration of the central gear 43 is realized, so that the flat head effect of the cutter shaft 3 is better, and meanwhile, the relative reverse rotation of the cutter shaft 3 and the main shaft 1 is realized, so that the cutter shaft is suitable for different processing requirements and has better adaptability; the water-cooling gear ring 41, the duplex gear 42, the transition gear 44 and the central gear 43 form an accelerating gear set, namely, the transition gear 44 is additionally arranged between the duplex gear 42 and the central gear 43, so that the planetary gear transmission mechanism 4 has more stages and more obvious acceleration effect, the rotating speed of the cutter shaft 3 is increased under the condition that the rotating speed of the main shaft 1 is constant, and the flat head effect is better.

According to the flat head structure for machining, the rotatable cutter shaft 3 is coaxially arranged in the main shaft 1 provided with the thread rolling head 2, the shaft sleeve is arranged between the cutter shaft 3 and the main shaft 1, the planetary gear transmission mechanism 4 is arranged between the cutter shaft 3 and the main shaft 1, so that the cutter head is synchronously flat head operated through the blades 31 at the end parts of the cutter shaft 3 when the main shaft 1 drives the thread rolling head 2 to rotate, the support bearing 5 is arranged in the thread rolling head 2, one end of the cutter shaft 3, which is provided with the blades 31, is lifted, the planetary gear transmission mechanism 4 is arranged between the shaft sleeve and the support bearing 5, the two ends of the cutter shaft 3 can be respectively supported by the shaft sleeve and the support bearing 5, the side acting force of the planetary gear transmission mechanism 4 to the cutter shaft 3 is also acted on the position between the shaft sleeve and the support bearing 5, the two ends of the cutter shaft 3 are supported, the problem that the cutter shaft 3 is disturbed after the cutter shaft 3 is subsequently worn due to suspension of one end is avoided, the problem that the cutter shaft 3 is excessively worn due to uneven stress at the two ends is effectively prevented, the problem that part of the cutter shaft 3 is excessively worn due to the fact that the cutter shaft 3 is partially worn is prevented, the cutter shaft 3 is prevented from being inclined due to the position and the problem that the cutter shaft 3 is worn is prolonged, the machining precision is guaranteed, and the machining service life is prolonged.

Optionally, as shown in fig. 1 and fig. 6, a water inlet hole 412 adapted to be communicated with a water supply device is provided at the top end of the water-cooled gear ring 41, and one end of the water inlet hole 412 away from the water supply device corresponds to the top position of the inner gear ring 411. The water inlet 412 is preferably an L-shaped water inlet 412, i.e. the water flowing from the water supply device can change the direction, so that the water can directly flow to the top position of the inner gear ring 411, and the water at the top can flow to the whole inner gear ring 411 under the action of self gravity in the process of meshing the inner gear ring 411 with the duplex gear 42, thereby having the water cooling effect on each tooth of the inner gear ring 411 and prolonging the service life of the inner gear ring 411.

Optionally, as shown in fig. 1, 3, 4 and 5, a communication hole 62 penetrating through the inner cavity 61 and the outside is formed on the side wall of the handpiece base 6, so that the inner cavity 61 of the handpiece base 6 is communicated with the outside at the communication hole 62; the end of the duplex gear 42, which is away from the meshing with the central gear 43, is provided with a plurality of teeth, which extend out of the handpiece base 6 from the communication hole 62 and mesh with the annular gear 411, that is, the communication hole 62 provides a condition for meshing the duplex teeth with the annular gear 411, so as to meet the power transmission requirement.

Another embodiment of the present utility model provides a machining apparatus comprising a flat head structure for machining as described above.

In the machining equipment in the embodiment, the radial supporting piece positioned between the blade 31 and the machine head base 6 is arranged on the cutter shaft 3, so that the end of the blade 31 used for flat head operation on the cutter shaft 3 is radially supported, the coaxiality between the mounting through hole 63 and the cutter shaft 3 during working is kept, obvious radial movement between the cutter shaft 3 and the mounting through hole 63 is prevented, cutting and shaking are avoided, the machining precision is ensured, the machining quality is improved, the service life of equipment parts is prolonged, and the production cost is reduced.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.

Claims (10)

1. The flat head structure for machining is characterized by comprising a machine head base (6) and a cutter shaft (3), wherein the machine head base (6) is provided with an installation through hole (63), one end of the cutter shaft (3) is rotatably installed in the installation through hole (63), and the other end of the cutter shaft (3) is provided with a blade (31) for flat head operation; the cutter shaft (3) is externally connected with a radial support piece, the radial support piece is arranged between the blade (31) and the machine head base (6), and the radial support piece is used for limiting radial movement between the mounting through hole (63) and the cutter shaft (3) during flat head operation.

2. The flat head structure for machining according to claim 1, characterized by further comprising an outer disc (7), said outer disc (7) being provided with bearing mounting holes (71) for mounting said radial supports, said outer disc (7) being connected to said head base (6); the radial support is a support bearing (5) or a support shaft sleeve.

3. The flat head structure for machining according to claim 2, comprising a main shaft (1) and a thread rolling machine head (2), wherein the thread rolling machine head (2) is coaxially arranged on the output end of the main shaft (1), the thread rolling machine head (2) is provided with a thread rolling cavity, and a plurality of thread rolling wheels are arranged in the thread rolling cavity; the output end of the main shaft (1) is of a hollow structure, one end of the cutter shaft (3) is rotatably arranged in the hollow structure of the main shaft (1), and the cutter shaft (3) and the main shaft (1) are coaxially arranged; the other end of the cutter shaft (3) is a cutter head which extends out of the main shaft (1) and extends into the thread rolling cavity, and the cutter head is provided with the cutter blade (31); the radial support piece is arranged in one side of the thread rolling machine head (2) close to the main shaft (1), and one end of the cutter shaft (3) extending into the thread rolling cavity is arranged in the radial support piece.

4. A flat head structure for machining according to claim 3, characterized in that the head base (6) is provided with an inner cavity (61), one end of the head base (6) is connected with the spindle (1), the other end of the head base (6) is connected with the thread rolling head (2), and the inner cavity (61) is communicated with both the hollow structure of the spindle (1) and the thread rolling cavity; the outer disc (7) is arranged between the machine head base (6) and the thread rolling machine head (2), and the bearing mounting hole (71) penetrates through the inner cavity (61) and the thread rolling cavity.

5. The flat head structure for machining according to claim 4, characterized in that a planetary gear transmission mechanism (4) is arranged between the cutter shaft (3) and the main shaft (1), the planetary gear transmission mechanism (4) comprises a water-cooled gear ring (41), a duplex gear (42) and a central gear (43), the central gear (43) is installed in the inner cavity (61) and fixedly sleeved on the cutter shaft (3), and the water-cooled gear ring (41) is provided with an annular gear (411); the novel gear ring structure comprises a main shaft (1), and is characterized by further comprising a gear ring mounting seat (8), wherein the water-cooling gear ring (41) is sleeved outside the main shaft (1) and is fixed on the gear ring mounting seat (8), a duplicate gear (42) is rotatably mounted in the inner cavity (61) and is meshed with the inner gear ring (411) at one end, and the other end of the duplicate gear (42) is meshed with the central gear (43).

6. The flat head structure for machining according to claim 5, further comprising a plurality of auxiliary gears, each of which is rotatably mounted in the inner cavity (61) of the handpiece base (6) and each of which meshes with the sun gear (43); the auxiliary gears are arranged in two, and the two auxiliary gears and the duplicate gear (42) are distributed in an equilateral triangle shape by taking the axle center of the central gear (43) as the center.

7. The flat head structure for machining according to claim 4, characterized in that a planetary gear transmission mechanism (4) is arranged between the cutter shaft (3) and the main shaft (1), the planetary gear transmission mechanism (4) comprises a water-cooled gear ring (41), a duplex gear (42), a transition gear (44) and a sun gear (43), the sun gear (43) is installed in the inner cavity (61) and fixedly sleeved on the cutter shaft (3), and the water-cooled gear ring (41) is provided with an inner gear ring (411); still include ring gear mount pad (8), water-cooling ring gear (41) cover is located outside main shaft (1) and be fixed in on ring gear mount pad (8), duplex gear (42) rotate install in inner chamber (61) and one end with ring gear (411) meshing, transition gear (44) rotate install in inner chamber (61) and simultaneously with the other end of duplex gear (42) with sun gear (43) meshing.

8. The flat head structure for machining according to claim 5 or 7, characterized in that the top end of the water-cooled ring gear (41) is provided with a water inlet hole (412) adapted to communicate with a water supply device, and the end of the water inlet hole (412) away from the water supply device corresponds to the top position of the ring gear (411).

9. The flat head structure for machining according to claim 5 or 7, wherein a communication hole (62) penetrating through the inner cavity (61) and the outside is formed in the side wall of the machine head base (6), and a plurality of teeth are formed on one end of the duplex gear (42) which is away from the meshing with the central gear (43) and extend out of the machine head base (6) from the communication hole (62) and are meshed with the annular gear (411).

10. A machining apparatus comprising a flat head structure for machining according to any one of claims 1 to 9.