A pneumatic cutter head drive device for a thread rolling machine

Abstract

This utility model discloses a pneumatic cutter head drive device for a thread rolling machine. It features a fixed plate mounted on a motor, with a cylinder mounting plate supported by a support rod. A cylinder is mounted on the outer side of the cylinder mounting plate, and a guide seat is located on the inner side of the cylinder mounting plate. A drive sleeve is housed inside the guide seat, and the drive sleeve is connected to a bearing assembly and a transition rod via the transition rod, which is connected to an axial drive rod. The drive sleeve is also connected to the cylinder drive end. The cutter head is connected to the axial drive rod. This utility model uses a cylinder to axially drive the drive sleeve, thereby driving the cutter head to move axially. When the cutter head is subjected to the reverse force of workpiece compression, the cylinder can absorb the stress to a certain extent through the compression of high-pressure gas. This buffering effect effectively prevents damage to the cutter head or clutch.

Description

Technical Field

[0001] This utility model belongs to the technical field of machine tool accessories for thread rolling machines, and specifically relates to a pneumatic cutter head drive device for thread rolling machines. Background Technology

[0002] As is well known, the construction industry requires a large number of steel bars with threads at the ends, and these steel bars are usually processed on-site. The equipment used to process the threaded ends of these steel bars is the thread rolling machine.

[0003] Currently, thread rolling machines typically use a drive motor to drive the rotation of the cutter head during operation, and the forward and backward movement of the cutter is controlled by an electromagnetic clutch. For the specific structure of this device, please refer to the patent application with publication number CN 116604353B entitled "Dual-speed power simultaneous output transmission device for through-hole cooling of thread rolling machine".

[0004] The thread rolling machine structure disclosed above is widely used in the existing technology. However, in actual operation, it has technical drawbacks, mainly reflected in the following: because the cutter head is driven by an axial electromagnetic clutch, there is no buffer structure in the axial direction when the cutter head is performing cutting. As a result, the axial reverse driving force on the workpiece cannot be buffered, causing axial stress to concentrate on the cutter head or electromagnetic clutch. This makes the cutter head and electromagnetic clutch vulnerable parts, which seriously affects the production progress and efficiency.

[0005] Therefore, in view of the shortcomings of the existing technology, as people skilled in the art, it is urgent to improve the existing axial drive structure of the cutter head so that it can achieve stress buffering in the axial direction and avoid the damage to the cutter head caused by the inability to dissipate stress. Utility Model Content

[0006] In view of the shortcomings of the prior art described above, this utility model proposes a pneumatic cutter head drive device for a thread rolling machine, which realizes the axial feed drive of the cutter head by using pneumatic drive, and avoids damage to the cutter head or clutch caused by axial stress during machining.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A pneumatic cutter head drive device for a thread rolling machine includes a fixed plate fixed to a motor, a cylinder mounting plate supported on the fixed plate by a support rod, a cylinder mounted on the outer side of the cylinder mounting plate, a guide seat provided on the inner side of the cylinder mounting plate, a drive sleeve provided inside the guide seat, the drive sleeve being connected to a bearing assembly and a transition rod, the transition rod being connected to an axial drive rod, and the drive sleeve also being connected to the cylinder drive end; the cutter head is connected to the axial drive rod.

[0009] The inner guide seat of the cylinder fixing plate includes a fixing plate and an outer sleeve. The outer sleeve is provided with a guide groove, and the outer diameter of the drive sleeve is provided with a guide block that cooperates with the guide groove to achieve axial movement guidance.

[0010] The bearing assembly includes a thrust bearing and a radial bearing.

[0011] The transition rod is a T-shaped rod, which includes a T-shaped seat. The T-shaped seat is pressed against the thrust bearing, and the outer periphery of the T-shaped rod is a radial bearing.

[0012] The fixing plate is circular, and its periphery is provided with several adjusting arc grooves and several locking holes. The adjusting arc grooves are used to support the rod.

[0013] This invention has the following advantages: A fixed plate is mounted on the motor, and a cylinder mounting plate is supported on the fixed plate via a support rod. A cylinder is mounted on the outer side of the cylinder mounting plate, and a guide seat is located on the inner side of the cylinder mounting plate. A drive sleeve is located inside the guide seat, and the drive sleeve is connected to a bearing assembly and a transition rod. The transition rod is connected to an axial drive rod, and the drive sleeve is also connected to the cylinder drive end. A cutter head is connected to the axial drive rod. This invention uses a cylinder to axially drive the drive sleeve, thereby driving the cutter head to move axially. When the cutter head is subjected to the reverse force of workpiece compression, the cylinder can absorb the stress to a certain extent through the compression of high-pressure gas. This buffering effect effectively avoids damage to the cutter head or clutch.

[0014] This utility model features an improved structure that is simple, easy to operate and adjust, saves time and effort during installation, and extends the service life of the cutter head. It is an ideal pneumatic cutter head drive device for thread rolling machines. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure I ;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure II ;

[0018] Figure 3 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the present utility model from the front view.

[0020] Figure 5 for Figure 4 Enlarged schematic diagram of the structure of region A in the middle;

[0021] In the diagram, 1. Cylinder, 11. Axial drive rod, 12. Radial bearing, 13. Thrust bearing, 14. Snap ring, 2. Cylinder fixing plate, 3. Guide seat, 30. Fixing plate, 31. Cylinder drive end, 32. Outer sleeve, 33. Guide groove, 4. Drive sleeve, 41. Guide block, 5. Fixing plate, 51. Adjusting arc groove, 52. Locking hole, 53. Support rod, 6. Motor, 7. Connecting part, 71. Machining area, 8. Transition rod, 81. T-shaped seat, 9. Cutting head. Detailed Implementation

[0022] The present invention will be further described below through embodiments. The following description is merely an exemplary explanation. Those skilled in the art can make further structural improvements based on the following explanation. The scope of protection of this patent shall be determined by the scope set forth in the claims.

[0023] Example 1:

[0024] A pneumatic cutter head drive device for a thread rolling machine, as shown in the figure, includes a fixed plate 5 fixed on a motor 6. The fixed plate 5 is circular and has four adjusting arc grooves 51 and four locking holes 52 on its periphery. The adjusting arc grooves 51 are used to support the support rod 53. The outer side of the support rod 53 is connected to the cylinder fixing plate 2 and supports the cylinder fixing plate 2. A cylinder 1 is fixed on the outer side of the cylinder fixing plate 2. A guide seat 3 is provided on the inner side of the cylinder fixing plate 2. The guide seat 3 includes a fixing plate 30 and an outer sleeve 32. The outer sleeve 32 is provided with a guide groove 33.

[0025] This invention features a drive sleeve 4 inside the outer sleeve 32, which can slide axially within the outer sleeve 32. The drive sleeve 4 is internally connected to a bearing assembly and a transition rod 8, which is threadedly connected to an axial drive rod 11. The drive sleeve 4 is also connected to a cylinder drive end 31, which is the end of a cylinder push rod. The cylinder push rod passes through the cylinder fixing plate 2 and the fixing plate 30. The axial drive rod 11 passes through the motor 6, the connecting part 7, and the processing area 71 before connecting to the cutter head 9.

[0026] With the above structural configuration, when the axial drive rod 11 is installed through the motor 6, it is fixed to the rotor of the motor 6 and driven by the motor. When rotating at high speed, it can perform workpiece processing at the processing area 71 through the cutting head.

[0027] In operation, the rotation of the cutter head 9 is driven solely by the motor 6, but the cutter head 9 is driven axially by the cylinder 1. During this process, the reverse pressure from the workpiece on one side of the cutter head 9 can be adjusted by compressing the air pressure inside the cylinder. This compression is small, but it can prevent the cutter head 9 from being continuously impacted and prevent the impact force from being transmitted, thus avoiding irreversible damage to the cutter head caused by the impact.

[0028] Furthermore, during operation, the axial movement of the cutter head 9 is driven by the cylinder 1. However, during driving, the cutter head 9 is not directly connected to the cylinder because its axial movement is accompanied by rotational motion. Therefore, the axial movement and rotational motion must be separated, ensuring that the axial drive of the cylinder 1 does not affect the stationary rotation of the cutter head 9. This invention connects the drive sleeve 4 internally via a bearing assembly and a transition rod 8. The bearing assembly includes a thrust bearing 13 and a radial bearing 12. When the thrust bearing 13 and the radial bearing 12 are fixed, as... Figure 5 As shown, the transition rod 8 is a T-shaped rod, which includes a T-shaped seat 81. The T-shaped seat 81 is pressed against the thrust bearing 13. The outer periphery of the T-shaped rod is a radial bearing 12. A retaining spring 14 is also provided to fix it in conjunction with the radial bearing 12.

[0029] The combination of thrust bearing 13 and radial bearing 12 ensures that the transition rod 8 and the axial drive rod 11 rotate smoothly inside the drive sleeve 4.

[0030] Furthermore, when the drive sleeve 4 is axially driven by the cylinder drive end 31, even though the drive sleeve 4 is equipped with a thrust bearing 13 and a radial bearing 12, it will still be driven by the rotation of the transition rod 8. In order to avoid the drive sleeve 4 from being linked (rotating), the present invention provides a guide block 41 on the outer diameter of the drive sleeve 4 to cooperate with the guide groove 33 on the outer sleeve 32, thereby realizing the guidance of the drive sleeve 4 when it moves axially and preventing it from rotating in place.

[0031] In summary, this utility model uses cylinder 1 to drive the drive sleeve 4 axially, thereby driving the cutter head 9 to move axially. When the cutter head 9 is subjected to the reverse force of the workpiece, cylinder 1 can absorb the stress to a certain extent through the compression of high-pressure gas. This buffering effect effectively avoids damage to the cutter head 9 or the clutch.

[0032] This utility model features an improved structure that is simple, easy to operate and adjust, saves time and effort during installation, and extends the service life of the cutter head 9. It is an ideal pneumatic cutter head drive device for thread rolling machines.

Claims

1. A pneumatic cutter head drive device for a thread rolling machine, characterized in that: It includes a fixed plate fixed to the motor, a cylinder fixing plate mounted on the fixed plate via a support rod, a cylinder mounted on the outer side of the cylinder fixing plate, a guide seat on the inner side of the cylinder fixing plate, a drive sleeve inside the guide seat, the drive sleeve being connected to a bearing assembly and a transition rod, the transition rod being connected to an axial drive rod, and the drive sleeve also being connected to the cylinder drive end; a cutter head is connected to the axial drive rod.

2. The pneumatic cutter head drive device for a thread rolling machine as described in claim 1, characterized in that: The inner guide seat of the cylinder fixing plate includes a fixing plate and an outer sleeve. The outer sleeve is provided with a guide groove, and the outer diameter of the drive sleeve is provided with a guide block that cooperates with the guide groove to achieve axial movement guidance.

3. The pneumatic cutter head drive device for a thread rolling machine as described in claim 1, characterized in that: The bearing assembly includes a thrust bearing and a radial bearing.

4. The pneumatic cutter head drive device for a thread rolling machine as described in claim 3, characterized in that: The transition rod is a T-shaped rod, which includes a T-shaped seat. The T-shaped seat is pressed against the thrust bearing, and the outer periphery of the T-shaped rod is a radial bearing.

5. The pneumatic cutter head drive device for a thread rolling machine as described in claim 1, characterized in that: The fixing plate is circular, and its periphery is provided with several adjusting arc grooves and several locking holes. The adjusting arc grooves are used to support the rod.

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