A CNC double-head double-sided locking milling machine

Abstract

The present invention discloses a CNC double-head double-sided lock milling machine, which relates to the technical field of CNC turning and milling processing. It mainly includes a frame and a feeding channel arranged in the frame. Two groups of milling units are installed on the frame. The two groups of milling units are respectively located on both sides of the feeding channel. The milling unit includes a column, a clamping mechanism and a milling head mechanism. The column is located on one side of the feeding channel. The clamping mechanism and the milling head mechanism can be vertically slidably installed on the column. The milling head mechanism includes a power box slidably connected to the column and two groups of milling head assemblies installed at the output end of the power box. A milling depth stop iron mechanism is installed on the side wall of the column close to the feeding channel. The clamping mechanism is located above the milling depth stop iron mechanism. The two groups of milling head assemblies are respectively located on both sides of the milling depth stop iron mechanism. The present invention can perform milling processing on both ends of steel. Compared with the operation mode of achieving the purpose of double-head milling in the field, it not only reduces the floor space of the equipment, but also makes the processing more stable and efficient.

Description

Technical Field

[0001] The invention relates to the technical field of CNC turning and milling processing, and in particular to a CNC double-head double-sided locking milling machine. Background Art

[0002] The locking milling machine, also known as the locking machine, is mainly used for milling operations on the ends of steel in the field of steel structures, especially the milling operations on the ends of H-beams or I-beams. At present, domestic locking milling machines can only perform milling operations on one side or both sides of a single head of steel. When it is necessary to mill one side or both sides of the other end of the steel, the steel needs to be turned around or reversed to complete the double-head milling operation. To solve this problem, a common method in the field is to install a conveyor roller between two locking machines. After one end of the steel is processed, it is transferred to the other locking machine for processing. Although it avoids the complicated reversing problem, this operation method will increase the overall footprint of the equipment after all, especially for the case of longer steel, which will greatly occupy the layout of the factory. In addition, when processing both ends of the steel, it needs to be conveyed in the forward and reverse directions. On the one hand, it increases the difficulty of control, and on the other hand, the transmission stability cannot be guaranteed.

[0003] In view of this, it is necessary to design a CNC lock milling machine that can perform milling on both ends of steel. Summary of the invention

[0004] The purpose of the present invention is to provide a CNC double-head double-sided locking milling machine, which can perform milling on both ends of steel. Compared with the operating method of achieving the purpose of double-head milling in the field, it not only reduces the footprint of the equipment, but also makes the processing more stable and efficient.

[0005] The objective of the present invention is achieved through the following technical scheme: a CNC double-head double-sided locking milling machine, comprising a frame with a feed port on one side and a discharge port on the other side, a feeding channel for transmitting materials being formed between the feed port and the discharge port of the frame, and a conveying mechanism is arranged at the feed port and the discharge port of the frame, two groups of milling units are installed on the frame, and the two groups of milling units are respectively located on both sides of the feeding channel, the milling unit comprises a column, a clamping mechanism and a milling head mechanism, the column is located on one side of the feeding channel between the feed port and the discharge port conveying mechanism, the clamping mechanism and the milling head mechanism can both be vertically slidably installed on the column, the clamping mechanism is located above the milling head mechanism, the milling head mechanism comprises a power box slidably connected to the column and two groups of milling head assemblies installed at the output end of the power box, a milling depth stop iron mechanism is installed on the side wall of the column close to the feeding channel side, the clamping mechanism is located above the milling depth stop iron mechanism, and the two groups of milling head assemblies are respectively located on both sides of the milling depth stop iron mechanism.

[0006] Furthermore, the frame includes a base frame and a top frame fixed above the base frame by multiple vertical beams, the top frame includes at least one X-axis beam and at least one Y-axis beam, wherein a group of milling units can be slidably installed between the X-axis beam and the base frame, and a first power component for driving the group of milling units to slide back and forth along the transmission direction of the feeding channel is installed on the X-axis beam, and another group of milling units can be slidably installed between the Y-axis beam and the base frame, and a second power component for driving the group of milling units to slide in a direction close to or away from the feeding channel is installed on the Y-axis beam.

[0007] Furthermore, the clamping mechanism includes a slide and a telescope, one side of the slide is slidably matched with the side wall of the column close to the feeding channel, the fixed end of the telescope is fixedly connected to the upper part or top of the column, the telescopic end of the telescope is connected to the upper part of the slide and can push the slide to slide up and down along the side wall of the column, and a pressure plate is installed at the bottom of the slide.

[0008] Furthermore, the milling depth stop iron mechanism includes a positioning seat, a baffle shell and a clamping assembly installed in the baffle shell, the positioning seat is fixed on the side wall of the column, and the positioning seat is hinged on both sides along the transmission direction of the feeding channel with swing arms that can rotate toward one side of the feeding channel, the clamping assembly includes a telescopic cylinder, a bent arm and a clamping rod, the clamping rod is fixed between the swing arms on both sides, the cylinder end of the telescopic cylinder is hinged on the side wall of the column, and the piston end of the telescopic cylinder is hinged to one end of the bent arm, and the other end of the bent arm is fixedly connected to the middle part of the clamping rod, the lower part of the baffle shell is located on the side of the telescopic cylinder close to the feeding channel, and the lower part of the baffle shell is fixedly connected to the side wall of the column, the upper part of the baffle shell is located on the side of the clamping rod close to the feeding channel, and the upper part of the baffle shell is installed with a clamping head that forms a clamping gap with the clamping rod.

[0009] Furthermore, the clamping gap is located directly below the clamping mechanism.

[0010] Furthermore, the milling depth stop iron mechanism also includes a transmission assembly, which includes a transmission motor and multiple conveying rollers. The multiple conveying rollers are rotatably mounted on the side wall of the column close to the feeding channel through roller shafts, and the multiple conveying rollers are arranged side by side between the positioning seat and the clamping rod along the transmission direction of the feeding channel. The transmission motor and the roller shafts of all the conveying rollers are linked through a pulley assembly.

[0011] Furthermore, one side of the power box is slidably matched with the side wall of the column away from the feeding channel, and a screw transmission mechanism for driving the power box to slide up and down is installed on the side wall of the column away from the feeding channel. The two groups of milling head assemblies are installed on the side of the power box close to the feeding channel, and the two groups of milling head assemblies are respectively located on both sides of the milling depth stop mechanism along the transmission direction of the feeding channel.

[0012] Furthermore, the milling head assembly includes a first milling head, a second milling head, a third milling head and a stopper sleeve arranged in sequence from top to bottom, the first milling head, the second milling head and the third milling head are rotatably connected to the output end of the power box, and the stopper sleeve is adjustably mounted on the side wall of the power box.

[0013] Furthermore, the power box is equipped with an adjusting cylinder which can at least enable the second milling head and the third milling head to extend and retract in a direction close to or away from the feeding channel.

[0014] Furthermore, the conveying mechanism is a roller conveyor, which is provided with at least one positioning block arranged along its conveying direction, the positioning block includes a card strip and a support foot fixed on the lower surface of the card strip, the support foot is fixed on the surface between adjacent rollers on the roller conveyor, and the length direction of the card strip is parallel to the conveying direction of the roller conveyor.

[0015] The locking milling machine provided by the embodiment of the present invention has the following beneficial effects:

[0016] 1. By setting two sets of milling units on both sides of the feeding channel, the milling head mechanism in each set of milling units includes two sets of milling head components. After the double-sided milling of one end of the steel is completed, continue to feed to the designated station, and then the other end of the steel can be milled, thereby achieving the purpose of double-head and double-sided processing of steel with only one machine. Compared with other methods in the current field, this single-direction feeding method has the advantage of small equipment footprint, and single-side feeding can not only ensure the stability of steel transmission and ensure higher processing accuracy, but also does not require reversing transmission or turning transmission, which can ensure higher overall operation efficiency;

[0017] 2. By arranging a first power assembly on the top frame, one group of milling units can be moved or adjusted in the X-axis direction, so as to adapt to the milling operation of the beveled steel; and a second power assembly is also arranged to enable another group of milling units to move or adjust in the Y-axis direction, so as to achieve the purpose of milling steels of different widths;

[0018] 3. By setting up a clamping mechanism, the displacement of the steel in the vertical (Y-axis) direction can be prevented, ensuring the stability of steel processing. In addition, in combination with the milling depth stop iron mechanism, it can further ensure that the steel will not be displaced in the vertical (Y-axis) and horizontal (X-axis) directions during processing, greatly ensuring sufficient stability of the steel, so as to obtain higher processing accuracy;

[0019] 4. By configuring the transmission component in the milling depth stop mechanism, it is possible to ensure that the steel can continue to be fed to the other end when one end is processed. The transmission accuracy and smoothness of the entire process can ensure that the steel can maintain a high positioning accuracy when the other end is processed, thereby ensuring the high precision of the entire milling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a locking milling machine provided by an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A partial structural schematic diagram of a locking milling machine is shown;

[0022] Figure 3 A schematic diagram of the assembly of a column and a clamping mechanism provided in an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of the matching positions of two sets of milling head mechanisms provided in an embodiment of the present invention;

[0024] Figure 5 A schematic structural diagram of a milling head mechanism provided in an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the internal structure of a milling depth stop iron mechanism provided in an embodiment of the present invention.

[0026] Markings in the figure: 1-frame; 2-protective cover; 3-conveying mechanism; 4-feeding channel; 5-milling unit; 6-milling depth stop iron mechanism; 11-base frame; 12-X-axis beam; 13-Y-axis beam; 14-second power assembly; 15-first power assembly; 16-vertical beam; 31-positioning block; 51-column; 52-pressing mechanism; 53-milling head mechanism; 61-baffle housing; 62-clamping head; 63-positioning seat; 64-swing arm; 65-telescopic cylinder; 66-bending arm; 67-clamping rod; 68-transmission roller; 69-transmission motor; 521-telescopic device; 522-sliding seat; 523-pressing plate; 531-power box; 532-milling head assembly; 5311-gear transmission box; 5312-active motor; 5313-adjusting cylinder; 5314-output end; 5321-first milling head; 5322-second milling head; 5323-third milling head; 5324-stop sleeve. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in the subsequent drawings.

[0030] In the description of the present invention, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] The terms "roughly" and "basically" are intended to explain that the relevant content does not require absolute accuracy, but can have certain deviations. For example, "roughly parallel" does not only mean absolute parallelism. Since it is difficult to achieve absolute "parallelism" in actual production and operation, there are generally certain deviations. Therefore, in addition to absolute parallelism, "roughly parallel" also includes the above-mentioned situation with certain deviations.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Example

[0034] See also Figure 1 and Figure 2The CNC double-headed double-sided locking milling machine provided in this embodiment includes a frame 1 with a feed port on one side and a discharge port on the other side. A feeding channel 4 for transmitting materials is formed between the feed port and the discharge port of the frame 1. The feed port and the discharge port are respectively located on the front and rear sides of the frame 1, or on the front left or front and rear sides of the frame 1. In line with the design concept of reducing floor space and rapid transportation, the feed port and the discharge port are respectively located on the front and rear sides of the frame 1 in the usual use direction. A conveying mechanism 3 is provided at the feed port and the discharge port of the frame 1, which is used to convey steel into the feed port and output from the discharge port. The conveying mechanism 3 can be a belt conveyor, a scraper conveyor or a roller conveyor, etc. In order to ensure sufficient support strength and transmission stability, a roller conveyor is preferably used in this embodiment, which can provide sufficient support for steel, especially H-shaped steel. In order to further ensure that the steel can obtain better transmission stability on the roller conveyor and will not deviate significantly on the roller, the roller conveyor is provided with at least one positioning block 31 arranged along its conveying direction. The number of positioning blocks 31 is arranged according to the conveying length, and it is only necessary to ensure that all positioning blocks 31 are arranged in end-to-end contact or non-contact manner along the conveying direction. All positioning blocks 31 are located on one side of the roller surface of the roller conveyor, and one side of the H-shaped steel is limited, which means that the H-shaped steel is placed on the roller conveyor in an "H" shape, and the inner edge of the side plate on the left or right side contacts and rubs against the outer edge of the positioning block 31, and the positioning block 31 acts as a guide rail. In order to ensure that the positioning block 31 has adjustable and detachable functions, in the present embodiment, the positioning block 31 includes a card strip and two legs fixed on the lower surface of the card strip. The card strip is a strip body with a rectangular cross-section, and the length direction of the card strip is parallel to the conveying direction of the roller conveyor. The legs are long and are detachably fixed on the surface between adjacent rollers on the roller conveyor by bolts, and the surface between adjacent rollers is processed with several rows of screw hole groups. The legs are screwed to the screw holes in different rows by bolts to adjust the position of the entire positioning block 31 in the width direction of the roller conveyor, so as to adapt to the transmission of steel of different sizes.

[0035] In addition, the entire frame 1 is equipped with a protective cover 2 arranged around the circumference thereof, which can separate the moving components in the frame 1 to a certain extent, which not only improves the safety of the working environment, but also prevents external forces from affecting the moving components in the frame 1. In this embodiment, the frame 1 includes a base frame 11 and a top frame fixed to the top of the base frame 11 by four vertical beams 16 fixedly installed at the four corners of the base frame 11. The top frame can be T-shaped, I-shaped or "Ⅱ" structure, that is, it can include at least one X-axis beam 12 and at least one Y-axis beam 13. In this embodiment, an I-shaped structure is adopted, that is, the top frame includes two X-axis beams 12 and one Y-axis beam 13. The feeding channel 4 between the two groups of conveying mechanisms 3 is the working space for H-shaped steel milling processing. In order to be able to perform double-sided milling processing on the H-shaped steel with a single head each time, two groups of milling units 5 are installed on the frame 1. The two groups of milling units 5 are respectively located on the left and right sides of the transmission direction of the feeding channel 4. Each time a single head is processed, the two groups of milling units 5 work simultaneously, that is, single-head double-sided milling processing can be performed.

[0036] In order to achieve the purpose of milling steels of different widths and beveled steels, one group of milling units 5 is slidably mounted between the X-axis beam 12 and the base frame 11, and a first power assembly 15 for driving the group of milling units 5 to slide forward and backward along the transmission direction (front and rear direction) of the feeding channel 4 is installed on the X-axis beam 12, and another group of milling units 5 is slidably mounted between the Y-axis beam 13 and the base frame 11, and a second power assembly 14 for driving the group of milling units 5 to slide in a direction close to or away from the feeding channel 4 (left and right direction) is installed on the Y-axis beam 13. The two groups of milling units 5 and the base frame 11 are both connected in a sliding manner by a slide rail and a slide seat, and can also be connected in a slide groove and a pulley, which is not limited here. Similarly, the two groups of milling units 5 and the X-axis beam 12 and the Y-axis beam 13 can also be connected in a sliding manner by a slide rail and a slide seat, or can also be connected in a slide groove and a pulley. Similarly, the two groups of milling units 5 can also be connected in a sliding manner by a slide rail and a slide seat, or can also be connected in a slide groove and a pulley, which is not limited here. In this embodiment, the first power assembly 15 installed on the X-axis beam 12 and the second power assembly 14 installed on the Y-axis beam 13 can be in the form of a linear drive mechanism such as an electric telescopic rod, a telescopic oil cylinder or a cylinder, a motor and a pulley assembly. In order to ensure reliable transmission and a long transmission distance, the first power assembly 15 and the second power assembly 14 here are both in the form of a motor and a screw transmission mechanism, which can not only ensure the stable sliding of the two sets of milling units 5, but also achieve a long sliding stroke. When it is necessary to adapt to the milling of H-shaped steels of different widths, the milling unit 5 at the X-axis beam 12 is kept stationary, and the milling unit 5 at the Y-axis beam 13 is adjusted to slide left and right to achieve the purpose of processing steels of different widths; when it is necessary to mill the oblique H-shaped steel (the end of the steel is an inclined surface), the milling unit 5 at the Y-axis beam 13 is kept stationary, and the milling unit 5 at the X-axis beam 12 is adjusted to slide back and forth to achieve the purpose of processing the oblique steel.

[0037] In order to ensure that the steel can be accurately positioned and stably clamped during processing, a single set of milling units 5 is used for explanation. The milling units 5 include a column 51, a clamping mechanism 52 and a milling head mechanism 53. The column 51 is located on the left or right side of the feeding channel. The column 51 is slidably arranged between the top frame and the bottom frame 11 in any of the aforementioned sliding connection methods. The clamping mechanism 52 and the milling head mechanism 53 can be vertically slidably installed on the column 51, and the clamping mechanism 52 is located above the milling head mechanism 53. The clamping mechanism 52 is mainly used to firmly clamp the upper surface of one side of the steel. Please refer to Figure 3The clamping mechanism 52 includes a slide 522 and a telescope 521. One side of the slide 522 is slidably matched with the side wall (inner wall) of the column 51 close to the feeding channel 4. The sliding match can be achieved in the form of a slide rail and a slide, or in the form of a slide groove and a pulley, or in the form of a slide plate and a slide groove. The fixed end of the telescope 521 is fixedly connected to the support plate at the top of the column 51, and the support plate top frame is slidably connected. The telescopic end of the telescope 521 is connected to the upper part of the slide 522 and can push the slide 522 to slide up and down along the side wall of the column 51. The telescope 521 can It can be any one of the forms of an electric telescopic rod, a telescopic oil cylinder, a telescopic air cylinder, a motor with a pulley assembly, and a motor with a screw transmission mechanism. Here, a hydraulic oil cylinder is preferably used. A pressing plate 523 is installed at the bottom of the slide 522. The lower surface of the pressing plate 523 is processed with a pressing notch that matches the single-sided upper surface of the H-shaped steel. The longitudinal cross-section of the pressing notch is a triangle. When the telescope 521 is extended and drives the slide 522 to slide downward, the pressing notch of the pressing plate 523 and the single-sided upper surface of the H-shaped steel are clamped together to prevent its vertical (Y-axis) upward displacement, thereby ensuring the stability of steel processing.

[0038] To fix the lower part of the steel to prevent it from moving vertically downward and horizontally (X axis), refer to Figure 5 and Figure 6A milling depth stop iron mechanism 6 is installed on the side wall of the column 51 close to the feeding channel 4. Specifically, the milling depth stop iron mechanism 6 includes a positioning seat 63, a baffle shell 61 and a clamping assembly installed in the baffle shell 61. The cross-sectional shape of the positioning seat 63 is roughly U-shaped. The middle part of the positioning seat 63 is fixed to the inner wall of the column 51 by fasteners (bolts) or welding. The two ends (sides) of the positioning seat 63 are extended toward the feeding channel 4, and the two ends are distributed along the transmission direction of the feeding channel 4. The two ends (sides) of the positioning seat 63 are hinged with a swing arm 64 that can rotate toward the feeding channel 4. The clamping assembly includes a telescopic cylinder 65, a bent arm 66 and a clamping rod 67. The clamping rod 67 is fixed between the swing arms 64 on both sides, and the length direction of the clamping rod 67 is parallel to the transmission direction of the feeding channel 4. The telescopic cylinder 65 is in the form of an oil cylinder. The cylinder end of the telescopic cylinder 65 is hinged to the side wall of the column 51 through a hinge seat, and the piston end of the telescopic cylinder 65 is hinged to one end of the bent arm 66. The bent arm 66 can be in the form of a single one, or it can be a combination of two or more parallel to each other and fixed to each other by a short axis. The other end of the bent arm 66 is fixedly connected to the middle of the clamping rod 67, and this fixed connection method is preferably welding. The longitudinal section of the baffle housing 61 is roughly L-shaped, and the baffle housing 61 is located on the side of the telescopic cylinder 65 close to the feeding channel 4. The lower horizontal support beam of the baffle housing 61 is fixedly screwed or welded to the side wall of the column 51, and the upper vertical support beam of the baffle housing 61 is located on the side of the clamping rod 67 close to the feeding channel 4, and a clamping plate head 62 is installed on the top of the baffle housing 61 to form a clamping gap with the clamping rod 67. The clamping plate head 62 is detachably fixed to the top of the baffle housing 61 by bolts, and the clamping plate head 62 and the clamping rod 67 are located on the same horizontal working plane. When the telescopic cylinder 65 retracts, the clamping rod 67 can approach the clamping plate head 62 and narrow the clamping gap, and this clamping gap is located directly below the pressure plate in the clamping mechanism 52, thereby clamping the single-side bottom of the H-shaped steel to prevent the H-shaped steel from being displaced in the vertical downward direction and the lateral (X-axis) direction.

[0039] In order to allow the processed H-shaped steel to continue to be fed toward the transmission direction of the feeding channel 4, the milling depth stop iron mechanism 6 also includes a transmission assembly, which includes a transmission motor 69 and multiple transmission rollers 68. The multiple transmission rollers 68 are rotatably mounted on the side wall of the column 51 close to the feeding channel 4 through roller shafts and bearing assemblies, and the multiple transmission rollers 68 are evenly arranged side by side between the positioning seat 63 and the clamping rod 67 along the transmission direction of the feeding channel 4. Preferably, there are three transmission rollers 68, and the three transmission rollers 68 are located between the swing arms 64 on both sides. The transmission motor 69 and the roller shafts of all the transmission rollers 68 are linked through the pulley assembly. When the control motor 69 is started, all the transmission rollers 68 start to transmit synchronously and in the same direction, so that the steel continues to be fed along the transmission direction of the feeding channel 4.

[0040] In order to achieve the purpose of double-end milling of steel with continuous feeding, please refer to Figure 4 and Figure 5 The milling head mechanism 53 includes a power box 531 slidably connected to the column 51 and two groups of milling head assemblies 532 installed at the output ends 5314 on both sides of the power box 531. The inner side of the power box 531 slides with the side wall of the column 51 away from the feeding channel 4, and the sliding cooperation method adopts any one of the aforementioned sliding connection methods. A screw transmission mechanism for driving the power box 531 to slide up and down is installed on the side wall of the column 51 away from the feeding channel 4. The two groups of milling head assemblies 532 are both installed on the inner side of the power box 531, that is, on the side close to the feeding channel 4. Specifically, the two groups of milling head assemblies 532 are respectively located on both sides of the baffle housing 61 in the milling depth stop iron mechanism 6, and the two groups of milling head assemblies 532 are distributed along the transmission direction of the feeding channel 4. When the H-shaped steel is fed into the feeding channel 4 from the conveying mechanism 3 on one side, one end of the H-shaped steel passes over the milling head assembly 532 in the previous group and stays on the clamping gap in the milling depth stop iron mechanism 6, and the milling head assembly 532 in the subsequent group performs milling processing on its end. After the milling processing is completed, the H-shaped steel continues to be fed in, and one end of the H-shaped steel stays on the clamping gap in the milling depth stop iron mechanism 6, and the milling head assembly 532 in the previous group performs milling processing on its other end, thereby finally achieving the purpose of double-head and double-sided processing of steel under the premise of using one milling machine and single-side transmission. In this embodiment, the power box 531 is in the form of a gear transmission box 5311, which uses an active motor 5312 on the outside as power input. Through mutual transmission between gears, multiple output shafts are arranged at both ends of its inner side, i.e., both ends of the transmission direction of the feeding channel 4, as the output end 5314, and the milling head assembly 532 is installed on the output end 5314. This can ensure that the purpose of multi-axis output is achieved under the premise of one power input, which not only reduces the power input of the power box 531, but also reduces the footprint of the power box 531.

[0041] Conventional milling procedures for H-shaped steel generally involve processing of grooves, end faces and arc grooves of side plates. In this embodiment, the milling head assembly 532 includes a first milling head 5321, a second milling head 5322, a third milling head 5323 and a stopper sleeve 5324 arranged from top to bottom, wherein the order of the first milling head 5321, the second milling head 5322 and the third milling head 5323 can be changed to another arrangement. In this embodiment, preferably, the first milling head 5321 is a conical milling cutter, the second milling head 5322 is a disc milling cutter, and the third milling head 5323 is a cylindrical milling cutter. The output end 5314 on each side of the power box 531 includes three output shafts, and the first milling head 5321, the second milling head 5322 and the third milling head 5323 are all fixedly connected with the three output shafts, so that the end of the H-shaped steel can be milled to perform grooves, end faces and arc grooves of side plates. The stopper sleeve 5324 is fixed to the bottom of the power box 531 and is adjustably connected to the bottom of the power box 531. The stopper sleeve 5324 is used to limit the end of the H-shaped steel, that is, to determine the initial position of the feed operation. Specifically, a horizontal sliding block that can slide along the transmission direction of the feeding channel 4 is installed at the bottom of the power box 531 just below the third milling head 5323. A support is fixed on the side of the horizontal sliding block away from the power box 531, that is, on the outside. A support shaft is fixed on the outside of the support. The stopper sleeve 5324 is detachably mounted on the support shaft. When one end of the steel or plate is fed in and abuts against the stopper sleeve 5324, it indicates that the processing end of the steel or plate is positioned at the reference processing position. When the milling depth needs to be adjusted, a servo motor screw mechanism that drives the horizontal slider to slide is installed at the bottom of the power box 531. The screw in the servo motor screw mechanism is connected with the horizontal slider (as a screw nut), and the output end of the servo motor is connected to one end of the screw through a pulley assembly. When the servo motor is started to rotate, the horizontal slider can be controlled to move left and then right, thereby controlling the position of the stopper 5324 to adjust to the precise milling depth processing position. In order to make the stopper 5324 also have a telescopic function to facilitate feeding or retracting, a longitudinal slider is slidably provided on one side of the bottom of the power box 531 near the feeding channel 4 through a dovetail groove, and the transverse slider and the servo motor screw mechanism are both installed on the longitudinal slider. A telescopic oil cylinder for driving the longitudinal slider to slide is installed on the other side of the bottom of the power box 531, and the telescopic oil cylinder is controlled to be telescopic so as to achieve the purpose of controlling the telescopic movement of the stopper 5324.

[0042] When one end of the steel is being processed, the first milling head 5321, the second milling head 5322, and the third milling head 5323 need to be pushed toward the side of the feeding channel 4 in time. In this embodiment, the power box 531 is equipped with an adjusting cylinder 5313 that can make the second milling head 5322 and the third milling head 5323 extend and retract toward or away from the feeding channel 4. The piston rod of the adjusting cylinder 5313 is connected to the transmission shaft connected to the corresponding milling head through a connecting piece. The connecting piece can be an end bearing, a universal joint, a sleeve with an embedded bearing, or a nut seat, etc., which can realize a coupling and has one end fixed and the other end rotatably connected. A shaft sleeve is provided on the transmission shaft through a spline sleeve, and gears are processed on the shaft sleeve to achieve the purpose of mutual transmission with other gears. This structural form can ensure that the milling head has a telescopic function while ensuring high-speed rotation, and the tool can be retracted after processing is completed. The telescopic method of the first milling head 5321 can be the same as the telescopic method of the second milling head 5322. In this embodiment, the telescopic adjustment power input of the first milling head 5321 adopts a motor and a screw transmission mechanism, which replaces the adjustment cylinder 5313, and has the advantages of a larger moving stroke and higher control accuracy. When the first milling head 5321 is controlled to a precise position, the second milling head 5322 and the third milling head 5323 can be telescoped to the specified processing position according to this precise position.

[0043] The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention shall be included in the protection scope of the present invention. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and the present invention omits the description of known components and processing technologies and processes to avoid unnecessary limitation of the present invention.

Claims

1. A CNC double-head double-sided locking milling machine, characterized in that: The machine comprises a frame with a feed port on one side and a discharge port on the other side, a feeding channel for transmitting materials is formed between the feed port and the discharge port of the frame, and a conveying mechanism is arranged at the feed port and the discharge port of the frame, two groups of milling units are installed on the frame, and the two groups of milling units are respectively located on both sides of the feeding channel, and the milling unit comprises a column, a clamping mechanism and a milling head mechanism, the column is located on one side of the feeding channel between the feed port and the discharge port conveying mechanism, the clamping mechanism and the milling head mechanism can be vertically slidably installed on the column, and the clamping mechanism Located above the milling head mechanism, the milling head mechanism includes a power box slidably connected to the column and two groups of milling head assemblies installed at the output end of the power box, a milling depth stop iron mechanism is installed on the side wall of the column close to the feeding channel, the clamping mechanism is located above the milling depth stop iron mechanism, the two groups of milling head assemblies are respectively located on both sides of the milling depth stop iron mechanism, the frame includes a bottom frame and a top frame fixed above the bottom frame by multiple vertical beams, the top frame includes at least one X-axis beam and at least one Y-axis beam, wherein a group of milling units can be slidably installed between the X-axis beam and the bottom frame The first power assembly for driving the group of milling units to slide forward and backward along the transmission direction of the feeding channel is installed on the X-axis beam, and the other group of milling units can be slidably installed between the Y-axis beam and the base frame, and the second power assembly for driving the group of milling units to slide in the direction close to or away from the feeding channel is installed on the Y-axis beam. The milling depth stop iron mechanism includes a positioning seat, a baffle shell and a clamping assembly installed in the baffle shell. The positioning seat is fixed on the side wall of the column, and both sides of the positioning seat along the transmission direction of the feeding channel are hinged with a clamping assembly that can move toward the feeding channel. A swing arm that rotates on one side, the clamping assembly includes a telescopic cylinder, a bent arm and a clamping rod, the clamping rod is fixed between the swing arms on both sides, the cylinder end of the telescopic cylinder is hinged on the side wall of the column, and the piston end of the telescopic cylinder is hinged to one end of the bent arm, and the other end of the bent arm is fixedly connected to the middle part of the clamping rod, the lower part of the baffle shell is located on the side of the telescopic cylinder close to the feeding channel, and the lower part of the baffle shell is fixedly connected to the side wall of the column, the upper part of the baffle shell is located on the side of the clamping rod close to the feeding channel, and the upper part of the baffle shell is equipped with a clamping head that forms a clamping gap with the clamping rod.

2. The CNC double-head double-sided locking milling machine according to claim 1, characterized in that: The clamping mechanism includes a slide and a telescope. One side of the slide slides with the side wall of the column close to the feeding channel. The fixed end of the telescope is fixedly connected to the upper part or top of the column. The telescopic end of the telescope is connected to the upper part of the slide and can push the slide to slide up and down along the side wall of the column. A pressure plate is installed at the bottom of the slide.

3. The CNC double-head double-sided locking milling machine according to claim 1, characterized in that: The material clamping gap is located directly below the pressing mechanism.

4. The CNC double-head double-sided locking milling machine according to claim 1, characterized in that: The milling depth stop iron mechanism also includes a transmission assembly, which includes a transmission motor and multiple conveying rollers. The multiple conveying rollers are rotatably mounted on the side wall of the column close to the feeding channel through roller shafts, and the multiple conveying rollers are arranged side by side between the positioning seat and the clamping rod along the transmission direction of the feeding channel. The transmission motor and the roller shafts of all the conveying rollers are linked through a pulley assembly.

5. The CNC double-head double-sided locking milling machine according to any one of claims 1 to 2, characterized in that: One side of the power box is slidably matched with the side wall of the column away from the feeding channel, and a screw transmission mechanism for driving the power box to slide up and down is installed on the side wall of the column away from the feeding channel. The two groups of milling head assemblies are installed on the side of the power box close to the feeding channel, and the two groups of milling head assemblies are respectively located on both sides of the milling depth stop mechanism along the transmission direction of the feeding channel.

6. The CNC double-head double-sided locking milling machine according to claim 5, characterized in that: The milling head assembly includes a first milling head, a second milling head, a third milling head and a stopper sleeve which are arranged in sequence from top to bottom. The first milling head, the second milling head and the third milling head are all rotatably connected to the output end of the power box, and the stopper sleeve is adjustably mounted on the side wall of the power box.

7. The CNC double-head double-sided locking milling machine according to claim 6, characterized in that: The power box is provided with an adjusting oil cylinder which can at least make the second milling head and the third milling head extend and retract toward or away from the feeding channel.

8. The CNC double-head double-sided locking milling machine according to claim 1, characterized in that: The conveying mechanism is a roller conveyor, which is provided with at least one positioning block arranged along its conveying direction. The positioning block includes a card strip and a support foot fixed on the lower surface of the card strip. The support foot is fixed on the surface between adjacent rollers on the roller conveyor. The length direction of the card strip is parallel to the conveying direction of the roller conveyor.

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