Milling machine head high bearing structure

Abstract

The utility model discloses a milling machine processing machine head high bearing structure, including the body, is equipped with the support on the body, the positive surface of support is installed with the machine head body, and the machine head body realizes horizontal movement through the drive of first drive component, and the body still is equipped with the workstation, and the workstation realizes longitudinal movement through the drive of second drive component, and the positive surface upper position of support is equipped with the first guide rail, and the positive surface lower position of support is formed and is installed the boss in the protruding, and is equipped with the second guide rail on the installation boss, and the first guide rail protrudes in the top of support, and the second guide rail protrudes in the bottom of installation boss, and the upper top surface of support is equipped with the third guide rail, and the machine head body is equipped with respectively with the first guide rail, the second guide rail and the third guide rail sliding fit's first bearing structure, second bearing structure and third bearing structure, the utility model discloses through with first, second, third guide rail setting in different installation base surface, and with corresponding bearing structure cooperation, form multidirectional stress support, has promoted the load capacity of machine head body.

Description

Technical Field

[0001] This utility model relates to the field of milling machine technology, specifically a high load-bearing structure for a milling machine head. Background Technology

[0002] A milling machine is a machine tool that uses a milling cutter to process various surfaces of a workpiece. It typically uses the rotation of the milling cutter as the main motion and the relative movement between the workpiece and the milling cutter as the feed motion. It can be widely used to process planes, grooves, and various complex curved surfaces, gears, and other parts.

[0003] However, the existing milling machine head and the milling machine head each have two guide rails, which is a double guide rail structure. They are all mounted on the same mounting base, which provides poor support for the milling head. The spindle of the milling head is not stable enough during high-speed machining and is prone to vibration, which affects the stability of machining and makes it difficult to guarantee machining accuracy and quality. Utility Model Content

[0004] The purpose of this invention is to provide a high load-bearing structure for milling machine heads to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-load-bearing structure for a milling machine head includes a machine body, a support on the machine body, a machine head body mounted on the front of the support, the machine head body being driven laterally by a first drive assembly, a worktable on the machine body being driven longitudinally by a second drive assembly, a first guide rail at the upper part of the front of the support, a mounting boss protruding at the lower part of the front of the support, a second guide rail on the mounting boss, the first guide rail protruding from the top of the support, the second guide rail protruding from the bottom of the mounting boss, a third guide rail on the upper top surface of the support, and a first load-bearing structure, a second load-bearing structure, and a third load-bearing structure on the machine head body, which respectively slide in cooperation with the first guide rail, the second guide rail, and the third guide rail.

[0007] Furthermore, the first bearing structure includes an upper extension portion disposed on the back of the head body, the upper extension portion being provided with an upper limit groove with an opening facing downward, the upper limit groove being slidably engaged with the first guide rail.

[0008] Furthermore, the second bearing structure includes a lower extension portion disposed on the back of the head body, the lower extension portion having an upward-facing lower limit slide groove, the lower limit slide groove being slidably engaged with the second guide rail.

[0009] Furthermore, the sidewalls of both the upper limit slide and the lower limit slide are provided with continuous shallow U-shaped grooves, and the two ends of the shallow U-shaped grooves are not connected to the outside.

[0010] Furthermore, the third bearing structure includes several fixed plates disposed on one side of the first bearing structure. Each of the fixed plates is provided with four rotating shafts in the vertical direction. The rotating shafts are arranged symmetrically in pairs and spaced apart. Rollers are rotatably connected to each of the rotating shafts. Two adjacent rollers are respectively disposed on both sides of the third guide rail and contact the side wall of the third guide rail.

[0011] Furthermore, a reinforcing rib is provided at the top center of the fixing plate, and the reinforcing rib is fixedly connected to the first load-bearing structure.

[0012] The beneficial effects of this utility model are:

[0013] This utility model features a first guide rail located at the upper front of the support, a mounting boss protruding at the lower front of the support, a second guide rail on the mounting boss, and a third guide rail on the top surface of the support. The first guide rail protrudes upward from the top of the support, and the second guide rail protrudes downward from the bottom of the mounting boss. The first, second, and third guide rails are not on the same mounting base. The machine head body has a first bearing structure, a second bearing structure, and a third bearing structure that slide and cooperate with the first, second, and third guide rails, respectively. Through the cooperation of the three guide rails and the corresponding bearing structures, a multi-directional force-bearing support structure for the machine head body can be formed, resulting in good support effect, strong load capacity, and greatly improving the stability of the machine head body during operation, thus ensuring processing quality.

[0014] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0015] Figure 1 The overall structure of this utility model Figure 1 .

[0016] Figure 2 The overall structure of this utility model Figure 2 .

[0017] Figure 3 : Structural diagram of the machine head body of this utility model.

[0018] Reference numerals: 1. Machine body; 2. Support; 3. Machine head body; 4. Worktable; 5. First guide rail; 6. Mounting boss; 7. Second guide rail; 8. Third guide rail; 11. Second drive assembly; 21. First drive assembly; 31. Upper extension; 32. Upper limit slide groove; 33. Lower extension; 34. Lower limit slide groove; 35. Fixing plate; 36. Rotating shaft; 37. Roller; 38. Reinforcing rib; 39. Shallow U-shaped groove. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] Please refer to Figure 1-3 ;

[0021] A high-load-bearing structure for a milling machine head includes a body 1, a support 2 on the body 1, and a head body 3 mounted on the front of the support 2. The head body 3 is driven laterally by a first drive assembly 21. The body 1 also has a worktable 4 for mounting fixtures and clamping the workpiece to be processed. The worktable 4 is driven longitudinally by a second drive assembly 11. It should be noted that the first drive assembly 21 and the second drive assembly 11 have the same structure, both including a drive motor, a ball screw, and two fixed seats for supporting the ball screw. The two fixed seats of the first drive assembly 21 are fixed on the support 2 located on one side of the machine head body 3 to support the ball screw of the first drive assembly 21. The two fixed seats of the second drive assembly 11 are fixed on the worktable 4 to support the ball screw of the second drive assembly 11. The two ends of the two ball screws are rotatably connected to the corresponding two fixed seats. The machine head body 3 and the worktable 4 are respectively connected to the corresponding ball screws through a nut pair transmission. One end of each ball screw extends to the outside of the fixed seat and a driven wheel is installed at that end. The drive motor of the first drive assembly 21 is installed inside the support 2, and the drive motor of the second drive assembly 11 is installed on one side of the worktable 4. The output shafts of the two drive motors are equipped with drive wheels, which are connected to the corresponding driven wheels through a synchronous belt, thereby driving the ball screw to rotate and realizing the lateral feed of the machine head body 3 and the longitudinal feed of the worktable 4. The support 2 has a first guide rail 5 on its upper front side and a mounting boss 6 on its lower front side. The mounting boss 6 has a second guide rail 7 on its mounting boss 6 and a third guide rail 8 on its upper top surface. The first guide rail 5 protrudes upward from the top of the support 2, and the second guide rail 7 protrudes downward from the bottom of the mounting boss 6. The first guide rail 5, the second guide rail 7 and the third guide rail 8 are not on the same mounting base. The machine head body 3 has a first bearing structure, a second bearing structure and a third bearing structure that slide in cooperation with the first guide rail 5, the second guide rail 7 and the third guide rail 8 respectively. Through the cooperation of the three guide rails and the corresponding bearing structures, a multi-directional force support structure can be formed for the machine head body 3. The support effect is good and the load capacity is strong, which greatly improves the stability of the machine head body 3 during operation and ensures the processing quality.

[0022] In this embodiment, the first load-bearing structure includes an upper extension 31 disposed on the back of the head body 3. The upper extension 31 has a downward-facing upper limit groove 32, which slides in conjunction with the first guide rail 5. During operation, the first guide rail 5 serves as a load-bearing guide surface, bearing the downward force generated by the weight of the head body 3 and the cutting load. Through its cooperation with the upper limit groove 32, it restricts the downward displacement of the head body 3, ensuring that the head body 3 can slide smoothly along the axial direction of the first guide rail 5, achieving lateral feed motion. Furthermore, the first guide rail 5 is arranged in a similar right-angled trapezoidal structure, with its inclined surface facing the support 2. This structure effectively disperses stress distribution when the head body 3 is subjected to vibration loads, providing good buffering and vibration reduction effects, thereby improving the durability and operational stability of the first load-bearing structure.

[0023] In this embodiment, the second load-bearing structure includes a lower extension 33 disposed on the back of the head body 3. The lower extension 33 is provided with an upward-opening lower limiting groove 34, which slides in cooperation with the second guide rail 7. When the head body 3 is subjected to an upward component force caused by cutting force or vibration, the top surface of the lower limiting groove 34 will contact the second guide rail 7, thereby limiting the upward displacement of the head body 3 and preventing it from jumping upward. This achieves vertical positioning of the head body 3. Especially under heavy cutting or intermittent cutting conditions, in conjunction with the first load-bearing structure, it forms a high-rigidity layout with bidirectional upper and lower limiting and multi-point support, which greatly improves the overall stability and load capacity of the head body 3.

[0024] In this embodiment, both the upper limit slide 32 and the lower limit slide 34 have continuous shallow U-shaped grooves 39 on their sidewalls. Under high load or vibration conditions, the contact pressure between the guide rail and the slide may cause local stress concentration. The shallow U-shaped groove 39 is equivalent to setting a stress relief zone in the rigid structure, which can absorb some mechanical stress and reduce the risk of material fatigue. At the same time, this structure allows the slide to produce slight elastic deformation when under force, realizing dynamic fit with the guide rail position, improving contact uniformity, and extending the service life of the guide rail and the slide. The two ends of the shallow U-shaped groove 39 are not connected to the outside, so it will not damage the overall sealing structure of the slide. Compared with the open groove design, it can achieve a certain structural flexibility and prevent dust from entering the interior of the slide from the ends, effectively protecting the guide rail and sliding surface, and maintaining motion accuracy and lubrication.

[0025] In this embodiment, the third bearing structure includes several fixed plates 35 disposed on one side of the first bearing structure. Each of the fixed plates 35 is provided with four rotating shafts 36 in the vertical direction. The rotating shafts 36 are arranged symmetrically in pairs and spaced apart. Rollers 37 are rotatably connected to each of the rotating shafts 36. The rollers 37 can rotate freely around the rotating shafts 36. Two adjacent rollers 37 are respectively disposed on both sides of the third guide rail 8 and contact the side wall of the third guide rail 8 to form a clamping rolling fit. When the machine head body 3 moves laterally along the third guide rail 8, the rollers 37 roll synchronously under the guidance of the side wall of the guide rail, which reduces the frictional resistance of the movement and provides guiding constraints and anti-overturning support for the machine head body 3.

[0026] In this embodiment, a reinforcing rib 38 is provided at the top center of the fixing plate 35, and the reinforcing rib 38 is fixedly connected to the first load-bearing structure. This is used to improve the connection strength between the fixing plate 35 and the first load-bearing structure, thereby ensuring the service life and reliability of the third load-bearing structure.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A high-load-bearing structure for a milling machine head, comprising a machine body (1), a support (2) on the machine body (1), a head body (3) mounted on the front of the support (2), the head body (3) being driven to move laterally by a first drive assembly (21), and a worktable (4) on the machine body (1), the worktable (4) being driven to move longitudinally by a second drive assembly (11), characterized in that, The support (2) has a first guide rail (5) on its upper front side and a mounting boss (6) on its lower front side. The mounting boss (6) has a second guide rail (7) on it. The first guide rail (5) protrudes from the top of the support (2) and the second guide rail (7) protrudes from the bottom of the mounting boss (6). The support (2) has a third guide rail (8) on its upper top surface. The machine head body (3) has a first bearing structure, a second bearing structure, and a third bearing structure that slide with the first guide rail (5), the second guide rail (7), and the third guide rail (8), respectively.

2. The high load-bearing structure for a milling machine head according to claim 1, characterized in that, The first bearing structure includes an upper extension (31) disposed on the back of the head body (3), the upper extension (31) is provided with an upper limit groove (32) with the opening facing downward, and the upper limit groove (32) is slidably engaged with the first guide rail (5).

3. The high load-bearing structure for a milling machine head according to claim 2, characterized in that, The second bearing structure includes a lower extension (33) disposed on the back of the head body (3), the lower extension (33) is provided with an upward-opening lower limit slide groove (34), the lower limit slide groove (34) is slidably engaged with the second guide rail (7).

4. The high load-bearing structure for a milling machine head according to claim 3, characterized in that, The sidewalls of the upper limit slide (32) and the lower limit slide (34) are provided with continuous shallow U-shaped grooves (39), and the two ends of the shallow U-shaped grooves (39) are not connected to the outside.

5. The high load-bearing structure for a milling machine head according to claim 1, characterized in that, The third bearing structure includes several fixed plates (35) disposed on one side of the first bearing structure. Each of the fixed plates (35) has four rotating shafts (36) in the vertical direction. The rotating shafts (36) are arranged symmetrically in pairs and spaced apart. Each of the rotating shafts (36) is rotatably connected to a roller (37). Two adjacent rollers (37) are respectively disposed on both sides of the third guide rail (8) and contact the side wall of the third guide rail (8).

6. The high load-bearing structure for a milling machine head according to claim 5, characterized in that, The top center of the fixing plate (35) is provided with a reinforcing rib (38), which is fixedly connected to the first load-bearing structure.

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