Bridge type unfolding tool bit structure

Abstract

The utility model relates to a bridge type tool bit unfolding structure. According to the scheme, the bridge type tool bit unfolding structure comprises a transmission frame; the shell is arranged below the transmission frame, and a hollow transmission shaft sleeve is arranged in the shell; the servo motor is erected above the transmission frame and is connected with the left end of the transmission shaft sleeve through a synchronous belt transmission structure; the transmission rod is partially arranged in the transmission shaft sleeve; the cutter unfolding head is connected with the right end of the transmission shaft sleeve; the driving motor is mounted at the left end of the transmission frame through a motor connecting seat and is in driving connection with the ball screw; a bearing combination matched with the ball screw is arranged in the motor connecting seat; one end, far away from the driving motor, of the ball screw is connected with the top of the transmission seat through a guide nut; the bottom of the transmission seat is connected with the left end of the transmission rod, and a supporting bearing set is arranged between the transmission seat and the transmission rod; the guide rod seat is mounted below the transmission frame and is provided with a plurality of guide rods, and each guide rod is in sliding fit with the transmission seat; and a connecting seat. The rigidity is good, and the maintenance is convenient.

Description

Technical Field

[0001] The present application relates to a spreader cutter head, and in particular to a bridge-type spreader cutter head structure. Background Art

[0002] The cutter head can convert axial displacement into radial displacement during high-speed rotation, thereby realizing the processing of outer circles, inner holes, end faces, internal and external threads, and internal and external rotary surfaces of parts. Different tools can be adjusted and replaced according to different processing requirements.

[0003] However, the motor part used to drive the ball screw in the current spreader head usually adopts a structure in which the bearing seat and the motor connection seat are separated, resulting in weak overall rigidity and high difficulty in disassembly and maintenance. At the same time, there are fewer support bearings on the main shaft or transmission rod, resulting in weak stability of the transmission rod and prone to failure.

[0004] Therefore, a bridge-type blade head structure is urgently needed to solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of the present application is to provide a bridge-type spreader cutter head structure in order to solve the above-mentioned problems existing in the prior art.

[0006] In order to achieve the above application purpose, the present application adopts the following technical solution: a bridge-type blade head structure includes:

[0007] Transmission frame;

[0008] The housing is arranged below the transmission frame and has a hollow transmission sleeve therein;

[0009] The servo motor is mounted above the transmission frame and connected to the left end of the transmission shaft sleeve through a synchronous belt transmission structure;

[0010] A transmission rod, partly disposed in the transmission sleeve, capable of moving back and forth along the length of the transmission sleeve;

[0011] The spreading cutter head is connected to the right end of the transmission sleeve;

[0012] The driving motor is installed on the left end of the transmission frame through the motor connecting seat and is connected to the ball screw drive;

[0013] The motor connection seat is provided with a bearing assembly matched with the ball screw;

[0014] The ball screw, one end of which is away from the driving motor, is connected to the top of the transmission seat through a guide nut so as to be able to drive the transmission seat to move back and forth along the length direction of the ball screw;

[0015] A transmission seat, the bottom of which is connected to the left end of the transmission rod, and a support bearing group is provided between the transmission seat and the transmission rod;

[0016] A guide rod seat is installed below the transmission frame and is provided with a plurality of guide rods, each of which is slidably matched with the transmission seat;

[0017] The connecting seat is installed under the transmission frame and is used to install the guide rod and the motor connecting seat.

[0018] Working principle and beneficial effects: 1. Compared with the prior art, the present application combines the original bearing seat and the motor connecting seat into one, and arranges a bearing assembly in the motor connecting seat, which has better rigidity. At the same time, during disassembly, the ball screw can be removed together, which is easier to maintain.

[0019] 2. Compared with the prior art, the present application has better stability by setting a supporting bearing group in the transmission seat. At the same time, combined with the setting of the guide rod seat, guide rod and connecting seat, the transmission seat can move smoothly and stably under the drive of the guide nut of the ball screw, and has better stability.

[0020] Furthermore, the support bearing assembly includes at least four support bearings, which provides further stability.

[0021] Furthermore, the support bearing assembly also includes a transition sleeve arranged in the middle of the support bearing, which further increases the bearing specification and can bear a larger load. At the same time, the bearing can be disassembled as a whole for easy maintenance.

[0022] Furthermore, the support bearing assembly is installed in the transmission seat through the left and right bearing glands, so that it is convenient for disassembly and assembly and maintenance.

[0023] Furthermore, the motor connection seat also installs the bearing assembly in the motor connection seat through the bearing gland. In this way, the disassembly and assembly operation is also convenient, that is, after the motor connection seat is removed, the ball screw and the bearing assembly can be removed at the same time.

[0024] Furthermore, the bearing assembly includes a plurality of screw support bearings and spacers arranged between the screw support bearings. In this way, the stability of the ball screw can also be improved, and the supporting performance is better.

[0025] Furthermore, the bearing assembly further comprises a skeleton sealing ring, which is arranged at the left and right ends of the bearing assembly, so as to effectively protect the internal bearing assembly and increase the service life.

[0026] Furthermore, an oil-free bearing is provided between the transmission rod and the transmission sleeve. Oil-free bearings can work without the use of lubricating oil or grease because they are made of composite materials containing solid lubricants (such as molybdenum disulfide, graphite or other polymer materials), which can provide lubrication by themselves. They are very suitable for use in this application.

[0027] Furthermore, the material of the transmission seat is HT300. HT300 has high strength and hardness, and its minimum tensile strength can reach more than 300MPa, which makes it suitable for manufacturing mechanical parts that bear large loads and wear. Due to the characteristics of the material, HT300 has good wear resistance and is suitable for use in occasions that need to withstand long-term friction loss. Compared with other more expensive alloy materials, HT300, as an engineering cast iron, has relatively low cost and high cost performance. It is very suitable for use in this application.

[0028] Furthermore, a protective cover is provided outside the transmission base, so that the transmission base and the transmission structure inside the transmission base can be effectively protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a stereogram of the present application;

[0030] Figure 2 It is a partial structural diagram of this application;

[0031] Figure 3 It is the internal structure diagram of this application;

[0032] Figure 4 yes Figure 3 A partial enlarged view of .

[0033] In the figure, 1. transmission frame; 2. housing; 3. transmission sleeve; 4. transmission rod; 5. spreading head; 6. motor connecting seat; 7. ball screw; 8. transmission seat; 9. guide rod seat; 10. connecting seat; 11. protective cover; 12. skeleton sealing ring; 13. servo motor; 14. synchronous belt; 15. pulley; 31. oil-free bearing; 61. bearing assembly; 611. screw support bearing; 612. spacer; 81. support bearing group; 811. support bearing; 812. transition spacer; 91. guide rod. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0035] Those skilled in the art should understand that, in the disclosure of the present application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present application.

[0036] like Figure 1-4 As shown, the bridge-type blade head structure includes:

[0037] Transmission frame 1;

[0038] In this embodiment, the transmission frame 1 serves as a supporting structure, which is not limited here.

[0039] The housing 2 is arranged below the transmission frame 1 and has a hollow transmission sleeve 3 therein;

[0040] In this embodiment, the housing 2 is used to install the transmission sleeve 3. There are multiple bearings between the housing 2 and the transmission sleeve 3. Both ends are sealed by bearing glands. The top of the housing 2 is connected to the bottom of the transmission frame 1 through equal height blocks.

[0041] The servo motor 13 is mounted above the transmission frame 1 and connected to the left end of the transmission shaft sleeve 3 through a synchronous belt 14 transmission structure;

[0042] In this embodiment, it can be installed above the transmission frame 1 through other structures, and the synchronous belt 14 transmission structure is mainly composed of a pulley 15 and a synchronous belt 14, which is the most common structure, so its structure and principle are not repeated. The pulley 15 is connected to the transmission sleeve 3 through a keyway.

[0043] The transmission rod 4 is partially disposed in the transmission sleeve 3 and can move back and forth along the length direction of the transmission sleeve 3;

[0044] In this embodiment, the transmission rod 4 is also a prior art. The present application further improves the smoothness of movement of the transmission rod 4 by providing an oil-free bearing 31 between the transmission rod 4 and the transmission sleeve 3 .

[0045] The spreading cutter head 5 is connected to the right end of the transmission sleeve 3;

[0046] In this embodiment, the spreading cutter head 5 is also an existing structure, and its structure and principle are not described in detail here.

[0047] The driving motor is installed at the left end of the transmission frame 1 through the motor connecting seat 106 and is drivingly connected to the ball screw 7;

[0048] In this embodiment, the driving motor is not shown, but the driving motor is connected to the ball screw 7 via a coupling and is installed on the motor connecting seat 106 .

[0049] The motor connection seat 106 is provided with a bearing assembly 61 that cooperates with the ball screw;

[0050] In this embodiment, the motor connection seat 106 combines the existing bearing seat and the motor seat together, so that the bearing assembly 61 is installed inside the motor connection seat 106, wherein the bearing assembly 61 includes a plurality of screw support bearings 611 and a spacer 612 disposed between the screw support bearings 811, and the bearing assembly 61 also includes a skeleton seal ring 12, which is disposed at the left and right ends of the bearing assembly 61. In this way, the drive motor, the motor connection seat 106 and the ball screw 7 can be used as a module for easy disassembly and assembly.

[0051] The ball screw 7, one end of which is away from the driving motor, is connected to the top of the transmission seat 8 through a guide nut, so as to be able to drive the transmission seat 8 to move back and forth along the length direction of the ball screw 7;

[0052] In this embodiment, the ball screw 7 and its guide nut belong to the structure of a conventional ball screw, but this application specifically selects a ball screw 7 with a larger diameter and pitch (diameter 40mm, pitch 10mm) to make the product have better rigidity, and the specific working principle is not repeated. Preferably, the motor connection seat 106 also installs the bearing assembly 61 in the motor connection seat 106 through a bearing gland.

[0053] A transmission seat 8, the bottom of which is connected to the left end of the transmission rod 4, and a support bearing group 81 is provided between the transmission seat 8 and the transmission rod 4;

[0054] In this embodiment, the support bearing group 81 and 61 include at least four support bearings 811, and also include a transition spacer 812 arranged in the middle of the support bearing 811. The bearing specifications are further increased, and can withstand a larger load. At the same time, the whole can be disassembled and assembled for easy maintenance. Similarly, the support bearing group 81 and 61 are installed in the transmission seat 8 through two left and right bearing glands, and also have a skeleton seal ring 12.

[0055] Preferably, the material of the transmission seat 8 is HT300, but it may also be other materials with better performance.

[0056] The guide rod seat 9 is installed below the transmission frame 1 and is provided with a plurality of guide rods 91, each guide rod 91 is slidably matched with the transmission seat 8;

[0057] In this embodiment, the guide rod seat 9 is used to install the guide rod 91 as a sliding structure of the transmission seat 8 to replace the existing linear guide rail. The structure is relatively simpler and the cost is lower.

[0058] The connecting seat 10 is installed below the transmission frame 1 and is used for installing the guide rod 91 and the motor connecting seat 106 .

[0059] In this embodiment, the connection base 10 is used not only to install the motor connection base 106 but also to install the guide rod 91 .

[0060] The parts not described in detail in this application are prior art, so this application does not describe them in detail.

[0061] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0062] Although the present invention uses the terms such as transmission frame 1, housing 2, transmission sleeve 3, transmission rod 4, spreader head 5, motor connection seat 106, ball screw 7, transmission seat 8, guide rod seat 9, connection seat 10, protective cover 11, skeleton seal ring 12, servo motor 13, synchronous belt 14, pulley 15, oil-free bearing 31, bearing assembly 61, screw support bearing 611, spacer 612, support bearing group 81, support bearing 811, transition spacer 812, guide rod 91, etc., it does not exclude the possibility of using other terms. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present application; interpreting them as any additional restrictions is contrary to the spirit of the present application.

[0063] The present application is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of this application. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present application.

Claims

1. A bridge-type cutting head structure, characterized in that: include: Transmission frame; A housing is disposed below the transmission frame and contains a hollow transmission sleeve; A servo motor is mounted above the transmission frame and connected to the left end of the transmission sleeve through a synchronous belt transmission structure; A transmission rod, partly disposed in the transmission sleeve, capable of moving back and forth along the length direction of the transmission sleeve; A spreading cutter head connected to the right end of the transmission sleeve; A driving motor is installed at the left end of the transmission frame through a motor connecting seat and is drivingly connected to the ball screw; A motor connecting seat, in which a bearing assembly matching with the ball screw is arranged; A ball screw, one end of which is away from the drive motor, is connected to the top of the transmission seat through a guide nut so as to be able to drive the transmission seat to move back and forth along the length direction of the ball screw; A transmission seat, the bottom of which is connected to the left end of the transmission rod, and a support bearing assembly is provided between the transmission seat and the transmission rod; A guide rod seat is installed below the transmission frame and is provided with a plurality of guide rods, each guide rod being slidably matched with the transmission seat; A connecting seat is installed below the transmission frame and is used for installing the guide rod and the motor connecting seat.

2. A bridge-type cutting head structure according to claim 1, characterized in that: The support bearing assembly includes at least four support bearings.

3. A bridge-type cutting head structure according to claim 2, characterized in that: The support bearing assembly also includes a transition sleeve arranged in the middle of the support bearing.

4. The bridge-type cutting head structure according to claim 1, characterized in that: The support bearing assembly is installed in the transmission seat through two left and right bearing glands.

5. A bridge-type cutting head structure according to claim 4, characterized in that: The motor connection seat also installs the bearing assembly in the motor connection seat through a bearing pressure cover.

6. The bridge-type cutting head structure according to claim 1, characterized in that: The bearing assembly comprises a plurality of screw support bearings and spacers arranged between the screw support bearings.

7. A bridge-type cutting head structure according to claim 6, characterized in that: The bearing assembly also includes a skeleton sealing ring, which is arranged at the left and right ends of the bearing assembly.

8. A bridge-type cutting head structure according to any one of claims 1 to 7, characterized in that: An oil-free bearing is arranged between the transmission rod and the transmission sleeve.

9. A bridge-type cutting head structure according to any one of claims 1 to 7, characterized in that: The material of the transmission seat is HT300.

10. A bridge-type cutting head structure according to any one of claims 1 to 7, characterized in that: It also includes a protective cover arranged outside the transmission seat.

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