Balancing rod structure of machining center

Abstract

The utility model discloses a balance rod structure of a machining center, which belongs to the technical field of machining centers and comprises a main rod body structure, a movable driving mechanism, a sliding saddle structure, a movable pulley block, a machining mechanism, a side support and a balance rod structure. The movable driving mechanism is arranged at one end of the main rod body structure, the saddle structure is movably arranged on the side face of the main rod body structure, and the movable driving mechanism is in driving connection with the saddle structure; the movable pulley blocks are arranged on the two sides of the saddle structure, and the movable pulley blocks are connected with the saddle structure and the main rod body structure respectively; the machining mechanism is connected with the saddle structure, the two side supports are correspondingly arranged on the two sides of the saddle structure respectively, and each side support is correspondingly and movably connected with one balance rod structure. The balance rod structure of the machining center solves the technical problem of how to improve the moving efficiency between the sliding block and the stand column in a balance rod system.

Description

Technical Field

[0001] The utility model relates to the technical field of machining centers, in particular to a balance rod structure of a machining center. Background Technique

[0002] A numerically controlled machining center is a device that realizes automated machining through a computer control system. The numerical control system reads the machining program stored in the computer, controls the servo system of the machine tool to drive the actuating mechanism, and makes a relative movement between the workpiece and the tool, thereby realizing the machining process. During the machining process, the numerical control system adjusts parameters such as the movement trajectory of the tool, cutting speed, and feed rate in real time according to the machining requirements to ensure machining accuracy and quality.

[0003] The balance rod of the machining center plays an important role in the machining process of machine tools such as machining centers. It helps to improve machining accuracy and efficiency and reduce wear and friction. The described balance rod of the machining center is mainly used to balance the weights of the workbench, fixture, and workpiece. The weights of each part are evenly distributed to each balance rod through hydraulic oil to reduce friction and wear, thereby improving machining accuracy and efficiency.

[0004] Specifically, traditional gantry boring and milling machines mostly adopt a counterweight balance method. As the saddle moves, the center of gravity moves accordingly, resulting in poor balance and reduced machining accuracy. Currently, some numerically controlled machining centers also adopt a middle-mounted single-rod balance rod system. The balance rod system is arranged at the top of the column. The top of the balance rod is connected to the hydraulic system and driven by the hydraulic system. At the same time, the top of the balance rod is also fixedly connected to the saddle. The saddle drives the balance rod to slide up and down synchronously along the column of the numerical control center. With the above structure, the balance rod must be higher than the column, increasing the overall height of the machine tool, making installation difficult and costly. At the same time, due to the use of a single-rod balance rod system, the balance of the saddle sliding is poor, which in turn affects machining accuracy.

[0005] Based on this, Chinese Patent CN202846250U discloses a double-rod inverted balance rod system for a numerically controlled machining center. It is a left-right symmetric structure, which includes an upper bracket, a balance rod, and a lower bracket. The two sides of the saddle of the numerically controlled machining center are respectively fixedly connected to one end of the two upper brackets on both sides. The top end of the balance rod is fixedly connected to the other end of the upper bracket. The middle of the balance rod passes through the lower bracket. The bottom end of the balance rod is connected to the hydraulic system and driven by the hydraulic system to expand and contract up and down. The saddle drives the two upper brackets and the balance rod on both sides to slide up and down synchronously along the column of the numerical control center. The two lower brackets are respectively fixed on the outer sides of the columns of the numerically controlled machining center. This kind of balance rod system is arranged on one side of the numerically controlled machining center. The balance rod does not need to extend out of the height of the column, effectively reducing the height of the numerically controlled machining center machine tool and facilitating the installation of the numerically controlled machining center machine tool. At the same time, the support of the balance rod makes the up and down sliding of the saddle box more stable, improving machining accuracy.

[0006] However, the above - disclosed still has the technical problem of affecting the moving efficiency due to large sliding friction. Specifically, in the technical solutions disclosed in the existing patents, when this kind of balance bar system works, the saddle drives the upper brackets and the balance bar on both sides to slide up and down along the column of the numerical control center synchronously. Driven by the hydraulic pressure of the hydraulic system, the balance bar always maintains the state of supporting the weight of the saddle box, reducing the motor load and thus increasing the service life of the motor. That is to say, in the structure of this kind of balance bar, the saddle is connected to the balance bar system; at the same time, the saddle is slidably connected to the column through a number of sliders, and further, the saddle and the balance bar structure are linked. Due to the sliding friction between the slider and the linear guide rail, there will be a large resistance when the saddle moves on the column. Moreover, it is easy for processing debris and other sundries to remain on the linear guide rail, further affecting the smooth movement of the slider on the linear guide rail. Utility Model Content

[0007] Based on this, it is necessary to provide a balance bar structure for a machining center aiming at the technical problem of how to improve the moving efficiency between the slider and the column in the balance bar system.

[0008] A balance bar structure for a machining center, which includes: a main rod body structure, a moving driving mechanism, a saddle structure, a moving pulley group, a processing mechanism, side brackets and a balance bar structure; a moving driving mechanism is arranged at one end of the main rod body structure, the saddle structure is movably arranged on the side of the main rod body structure, and the moving driving mechanism is drivingly connected to the saddle structure; the moving pulley group is arranged on both sides of the saddle structure, and the moving pulley group is respectively connected to the saddle structure and the main rod body structure; the processing mechanism is connected to the saddle structure, and the two side brackets are respectively arranged on both sides of the saddle structure, and each side bracket is movably connected to a balance bar structure correspondingly.

[0009] Further, the main rod body structure has a vertical rod main body and side guiding grooves; one side guiding groove is arranged on each of the two side surfaces of the vertical rod main body.

[0010] Furthermore, the moving driving mechanism has a motor connecting frame, a servo motor, a power output wheel, a transmission chain, a power transmission wheel and a driving lead screw.

[0011] Furthermore, the motor connecting frame is connected to one end of the vertical rod main body, and the servo motor is connected to the motor connecting frame.

[0012] Furthermore, the servo motor is drivingly connected to the power output wheel, and the transmission chain is respectively connected to the power output wheel and the power transmission wheel.

[0013] Further, the driving lead screw is movably connected to the side surface of the vertical rod main body, and the power transmission wheel is connected to one end of the driving lead screw.

[0014] Further, the saddle structure has a moving seat, a driving nut block, and a saddle connecting portion.

[0015] Further, at least one driving nut block is arranged on the side surface of the moving seat, and each driving nut block is in matching connection with the driving lead screw; the saddle connecting portion is arranged on the other side surface of the moving seat relative to the driving nut block, and the saddle connecting portion is connected to the processing mechanism.

[0016] Further, the moving pulley group has a plurality of pulley connecting shafts and a plurality of pulley structures.

[0017] Further, the plurality of pulley connecting shafts are respectively and evenly distributed and connected to both side surfaces of the moving seat, and each pulley connecting shaft is movably connected to a corresponding pulley structure; each pulley structure is movably connected in the side guiding groove.

[0018] In summary, the balance rod structure of the machining center of the present invention is respectively provided with a main rod body structure, a moving driving mechanism, a saddle structure, a moving pulley group, a processing mechanism, side brackets, and a balance rod structure; a moving driving mechanism is arranged at one end of the main rod body structure, the saddle structure is movably arranged on the side surface of the main rod body structure, and the moving driving mechanism is in driving connection with the saddle structure; the moving pulley group is arranged on both sides of the saddle structure, and the moving pulley group is respectively connected to the saddle structure and the main rod body structure; the processing mechanism is connected to the saddle structure, and the two side brackets are respectively arranged on both sides of the saddle structure, and each side bracket is movably connected to a corresponding balance rod structure. The moving pulley group provided in the balance rod structure of the machining center of the present invention can convert the sliding friction between the slider and the linear guide in the traditional technical solution into the rolling friction between the moving pulley group and the main rod body structure when the saddle structure moves along the main rod body structure, thereby reducing the frictional resistance generated when the saddle structure moves along the main rod body structure; furthermore, the moving efficiency between the saddle structure and the main rod body structure is improved to solve the technical problem of low moving efficiency between the slider and the column in the balance rod system in the current technical solution. Therefore, the balance rod structure of the machining center of the present invention solves the technical problem of how to improve the moving efficiency between the slider and the column in the balance rod system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the balance rod structure of the machining center of the present invention;

[0020] Figure 2 This is a schematic diagram of another direction of the structure of the balance rod structure of the machining center of the present utility model;

[0021] Figure 3 This is a schematic diagram of another direction of the structure of the balance rod structure of the machining center of the present utility model. Specific embodiments

[0022] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following will describe the specific embodiments of the present utility model in detail with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0023] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0025] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0027] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0028] Please refer to Figures 1 to 3 , the balance bar structure of the machining center of the present utility model includes: a main rod body structure 1, a moving drive mechanism 2, a saddle structure 3, a moving pulley group 4, a machining mechanism 5, side brackets 6 and a balance bar structure 7; one end of the main rod body structure 1 is provided with the moving drive mechanism 2, the saddle structure 3 is movably disposed on the side of the main rod body structure 1, and the moving drive mechanism 2 is drivingly connected to the saddle structure 3; the moving pulley group 4 is disposed on both sides of the saddle structure 3, and the moving pulley group 4 is respectively connected to the saddle structure 3 and the main rod body structure 1; the machining mechanism 5 is connected to the saddle structure 3, and the two side brackets 6 are respectively disposed on both sides of the saddle structure 3, and each side bracket 6 is movably connected to a balance bar structure 7.

[0029] Specifically, when the balance rod structure of the machining center of the present utility model is in the working process, the main rod body structure 1 is the connecting part of the external machining center. It mainly serves as the supporting structure of each component and enables the saddle structure 3 to be movably connected thereto. When the machining mechanism 5 needs to move to a preset machining position, the moving drive mechanism 2 is activated to drive the saddle structure 3 to drive the machining mechanism 5 to move. When the saddle structure 3 moves, one side bracket 6 provided on each side thereof can act along the guide of the balance rod structure 7 to adjust and guide the moving track of the saddle structure 3. In addition, when the moving pulley group 4 enables the saddle structure 3 to move along the main rod body structure 1, the sliding friction between the slider and the linear guide in the traditional technical solution is converted into the rolling friction between the moving pulley group 4 and the main rod body structure 1, thereby reducing the frictional resistance generated when the saddle structure 3 moves along the main rod body structure 1. Furthermore, the moving efficiency between the saddle structure 3 and the main rod body structure 1 is improved to solve the technical problem of low moving efficiency between the slider and the column in the balance rod system in the current technical solution.

[0030] Furthermore, the main rod body structure 1 has a vertical rod main body 101 and a side guide groove 102; a side guide groove 102 is provided on each of the two side surfaces of the vertical rod main body 101.

[0031] Furthermore, the moving drive mechanism 2 has a motor connection frame 201, a servo motor 202, a power output wheel 203, a transmission chain 204, a power transmission wheel 205, and a drive lead screw 206; the motor connection frame 201 is connected to one end of the vertical rod main body 101, and the servo motor 202 is connected to the motor connection frame 201; the servo motor 202 is drivingly connected to the power output wheel 203, the transmission chain 204 is respectively connected to the power output wheel 203 and the power transmission wheel 205; the drive lead screw 206 is movably connected to the side surface of the vertical rod main body 101, and the power transmission wheel 205 is connected to one end of the drive lead screw 206.

[0032] Furthermore, the saddle structure 3 has a moving seat 301, a drive nut block 302, and a saddle connection part 303; at least one drive nut block 302 is provided on the side surface of the moving seat 301, and each drive nut block 302 is matingly connected to the drive lead screw 206; the saddle connection part 303 is provided on the other side surface of the moving seat 301 relative to the drive nut block 302, and the saddle connection part 303 is connected to the machining mechanism 5.

[0033] Specifically, after the servo motor 202 is started, it can drive the power output wheel 203 to rotate forward or backward. Thus, the power transmission wheel 205 can be driven to rotate through the transmission chain 204, and then the driving lead screw 206 can be driven to rotate forward or backward. When the driving lead screw 206 rotates forward or backward, the driving lead screw nut block 302 can reciprocate along the driving lead screw 206. Thus, the driving lead screw nut block 302 can drive the moving seat 301 and the saddle connection part 303 to reciprocate.

[0034] Further, the moving pulley group 4 has a plurality of pulley connecting shafts 401 and a plurality of pulley structures 402; the plurality of pulley connecting shafts 401 are respectively and evenly distributed and connected to both side surfaces of the moving seat 301, and each pulley connecting shaft 401 is movably connected to a corresponding pulley structure 402; each pulley structure 402 is movably connected to the side guiding groove 102. Specifically, when the saddle structure 3 moves on the side surface of the main rod body structure 1, the pulley connecting shafts 401 provided on both sides thereof are respectively connected to the pulley structures 402, and the pulley structures 402 can reciprocally roll in the side guiding groove 102. Thus, the saddle structure 3 can be converted from a traditional sliding connection to a rolling connection form to reduce the influence of frictional resistance on the moving efficiency of the saddle structure 3.

[0035] Further, the processing mechanism 5 has a processing servo motor 501 and a processing tool 502; the processing servo motor 501 is connected to the saddle connection part 303, and the processing servo motor 501 is drivingly connected to the processing tool 502. Specifically, the saddle structure 3 can guide the processing servo motor 501 and the processing tool 502 to move near the workpiece to be processed. After the processing servo motor 501 is started, the processing tool 502 can be rotated to perform cutting processing on the workpiece to be processed.

[0036] In summary, the balance rod structure of the machining center of the present utility model is respectively provided with a main rod body structure 1, a moving drive mechanism 2, a saddle structure 3, a moving pulley set 4, a machining mechanism 5, side brackets 6 and a balance rod structure 7. One end of the main rod body structure 1 is provided with the moving drive mechanism 2. The saddle structure 3 is movably arranged on the side of the main rod body structure 1, and the moving drive mechanism 2 is drivingly connected to the saddle structure 3. The moving pulley set 4 is arranged on both sides of the saddle structure 3, and the moving pulley set 4 is respectively connected to the saddle structure 3 and the main rod body structure 1. The machining mechanism 5 is connected to the saddle structure 3. The two side brackets 6 are respectively arranged on both sides of the saddle structure 3, and each side bracket 6 is movably connected to a balance rod structure 7. The moving pulley set 4 provided in the balance rod structure of the machining center of the present utility model can convert the sliding friction between the slider and the linear guide in the traditional technical solution into the rolling friction between the moving pulley set 4 and the main rod body structure 1 when the saddle structure 3 moves along the main rod body structure 1, thereby reducing the frictional resistance generated when the saddle structure 3 moves along the main rod body structure 1. Furthermore, the moving efficiency between the saddle structure 3 and the main rod body structure 1 is improved to solve the technical problem of low moving efficiency between the slider and the column in the balance rod system in the current technical solution. Therefore, the balance rod structure of the machining center of the present utility model solves the technical problem of how to improve the moving efficiency between the slider and the column in the balance rod system.

[0037] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0038] The above-described embodiments merely represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A balance bar structure of a machining center, characterized in that, It includes: A main rod body structure (1), a moving drive mechanism (2), a saddle structure (3), a moving pulley set (4), a processing mechanism (5), side brackets (6), and a balance rod structure (7); one end of the main rod body structure (1) is provided with the moving drive mechanism (2), the saddle structure (3) is movably arranged on the side of the main rod body structure (1), and the moving drive mechanism (2) is drivingly connected to the saddle structure (3); the moving pulley set (4) is arranged on both sides of the saddle structure (3), and the moving pulley set (4) is respectively connected to the saddle structure (3) and the main rod body structure (1); the processing mechanism (5) is connected to the saddle structure (3), and the two side brackets (6) are respectively arranged on both sides of the saddle structure (3), and each side bracket (6) is movably connected to a balance rod structure (7).

2. The balance rod structure of the machining center according to claim 1, wherein: The main rod body structure (1) has a vertical rod main body (101) and side guiding grooves (102); one side guiding groove (102) is arranged on each of the two side surfaces of the vertical rod main body (101).

3. The balance bar structure of the machining center according to claim 2, characterized in that: The moving drive mechanism (2) has a motor connecting frame (201), a servo motor (202), a power output wheel (203), a transmission chain (204), a power transmission wheel (205), and a driving lead screw (206).

4. The balance bar structure of the machining center according to claim 3, characterized in that: The motor connecting frame (201) is connected to one end of the vertical rod main body (101), and the servo motor (202) is connected to the motor connecting frame (201).

5. The balance bar structure of the machining center according to claim 4, characterized in that: The servo motor (202) is drivingly connected to the power output wheel (203), and the transmission chain (204) is respectively connected to the power output wheel (203) and the power transmission wheel (205).

6. The balance bar structure of the machining center according to claim 5, wherein: The driving lead screw (206) is movably connected to the side surface of the vertical rod main body (101), and the power transmission wheel (205) is connected to one end of the driving lead screw (206).

7. The balance bar structure of the machining center according to claim 6, characterized in that: The saddle structure (3) has a moving seat (301), a driving nut block (302), and a saddle connecting portion (303).

8. The balance bar structure of the machining center according to claim 7, characterized in that: At least one driving nut block (302) is arranged on the side surface of the moving seat (301), and each driving nut block (302) is in matching connection with the driving lead screw (206); the saddle connecting portion (303) is arranged on the other side surface of the moving seat (301) relative to the driving nut block (302), and the saddle connecting portion (303) is connected to the processing mechanism (5).

9. The balance bar structure of the machining center according to claim 8, wherein: The moving pulley set (4) has a plurality of pulley connecting shafts (401) and a plurality of pulley structures (402).

10. The balance bar structure of the machining center according to claim 9, characterized in that: The plurality of pulley connecting shafts (401) are respectively and evenly distributed and connected to both side surfaces of the moving seat (301), and each pulley connecting shaft (401) is movably connected to a pulley structure (402); each pulley structure (402) is movably connected in the side guiding groove (102).

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