Tapping machine lifting device

Abstract

The utility model relates to the technical field of tapping machines, in particular to a tapping machine lifting device which comprises a base, a stand column is fixedly connected to the left side of the top of the base, a lifting platform is arranged in the middle of the outer wall of the stand column in a sleeved mode, and a bearing plate is fixedly connected to the top of the stand column. An auxiliary supporting assembly is arranged on the right side of the interior of the bearing plate, a lead screw is arranged at the bottom of the auxiliary supporting assembly, the lower portion of the outer wall of the lead screw is sleeved with a threaded sleeve, and the outer wall of the threaded sleeve is fixedly connected to the inner wall of the right side of the lifting platform. Lubricating oil can be injected into the contact face of the bearing bush and the stand column through the guide sleeve, the bearing bush and other structures, the lifting platform can smoothly ascend and descend along the stand column, meanwhile, the single-row thrust ball bearing, the single-row radial ball bearing and other structures can be combined to assist in supporting the rotating shaft, abrasion of the rotating shaft is effectively reduced, and the service life of the rotating shaft is prolonged. And the smoothness and the stability of the device are improved.

Description

Technical Field

[0001] This utility model relates to the field of tapping machine technology, specifically a tapping machine lifting device. Background Technology

[0002] Tapping machines are essential equipment in the metal processing and machinery manufacturing industries. After the initial drilling of the internal thread hole is completed in the previous process, the tapping machine can conveniently and quickly tap the internal thread. Although universal pneumatic tapping machines are convenient to use and operate, their height adjustment range is quite limited. Therefore, they are often unable to handle tapping workpieces whose height exceeds their working range.

[0003] Existing devices primarily use lead screw assemblies to drive the lifting platform and tapping assembly up and down. Many existing technologies are similar to a spindle box lifting device for a vertical tapping machine tool. The structure of device CN203592345U includes a lifting bracket fixedly connected to the spindle box, with the lifting bracket and the machine frame slidably connected via a slide rail. A drive mechanism between the lifting bracket and the slide rail is used to move the lifting bracket along the slide rail. This spindle box lifting device for a vertical tapping machine tool allows for spindle box height adjustment, making it suitable for machining workpieces of various sizes and shapes, thus improving the versatility of the tapping machine tool. However, there are still areas for optimization in this device.

[0004] Existing devices mainly use slide rail assemblies to limit and support the sliding of the lifting platform. This makes it difficult to inject lubricating oil into the sliding contact surface of some devices, resulting in some lifting platforms not being able to smoothly rise and fall along the column. At the same time, some devices mainly use lead screws to drive the lifting platform, which makes the lead screw assembly prone to wear during rotation. This makes it difficult for some lead screw assemblies to rotate smoothly, reducing the working efficiency and practicality of the device. Therefore, in order to solve the above problems, a tapping machine lifting device is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a tapping machine lifting device to solve the problems mentioned in the background art. The existing devices mainly use slide rail assemblies to limit and support the sliding of the lifting platform, which makes it difficult to inject lubricating oil into the sliding contact surface of some devices, resulting in some lifting platforms being difficult to lift smoothly along the column. At the same time, some devices mainly use lead screws to drive the lifting platform to lift, which makes the lead screw assembly easy to be worn during rotation, resulting in some lead screw assemblies being difficult to rotate smoothly.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tapping machine lifting device, comprising a base, a column fixedly connected to the top left side of the base, a lifting platform sleeved in the middle of the outer wall of the column, and a support plate fixedly connected to the top of the column.

[0007] An auxiliary support assembly is provided on the inner right side of the support plate. A lead screw is provided at the bottom of the auxiliary support assembly. A threaded sleeve is fitted on the lower outer wall of the lead screw. The outer wall of the threaded sleeve is fixedly connected to the inner right wall of the lifting platform.

[0008] Preferably, a guide sleeve is fixedly connected to the inner left side of the lifting platform, and bearing bushes are fixedly connected to the upper and lower sides of the inner wall of the guide sleeve. The bearing bushes are sleeved and slide on the outer wall of the column.

[0009] Preferably, the guide sleeve has oil injection holes on the top left side and the lower left side, and the inner wall of the bearing bush has a lubricating oil groove, and the oil injection holes are connected to the lubricating oil groove.

[0010] Preferably, the auxiliary support assembly includes a bearing positioning sleeve, the outer wall of which is fixedly connected to the inner right wall of the support plate, and a rotating shaft is inserted in the middle of the bearing positioning sleeve. The bottom end of the rotating shaft passes through the bottom of the bearing positioning sleeve and is fixedly connected to the top of the lead screw.

[0011] Preferably, a single-row thrust ball bearing is fitted on the lower part of the outer wall of the rotating shaft, and the single-row thrust ball bearing is located inside the lower part of the bearing positioning sleeve. Two single-row radial ball bearings are fitted on the upper part of the outer wall of the rotating shaft, and the single-row radial ball bearings are located inside the upper part of the rotating shaft. A bearing end cap is fixedly connected to the top of the bearing positioning sleeve.

[0012] Preferably, the top end of the rotating shaft passes through the bearing end cover and is fitted with a handwheel, a locking member is fixedly connected to the upper part of the outer wall of the rotating shaft, and a slot corresponding to the locking member is opened on the inner wall of the handwheel.

[0013] Preferably, a washer is placed at the upper center of the handwheel, a bolt is inserted above the washer, and a screw hole corresponding to the bolt is opened on the top inner wall of the rotating shaft.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, through the structure of guide sleeve, bearing, oil injection hole and lubricating oil groove, enables some parts of the device to inject lubricating oil into the contact surface between the bearing and the column, so that the lifting platform can smoothly rise and fall along the column, thereby improving the smoothness and practicality of the device.

[0016] 2. This utility model uses a structure such as a single-row thrust ball bearing and a single-row radial ball bearing, which can be combined to assist in supporting the rotating shaft, effectively reducing the wear of the rotating shaft, thereby ensuring smooth rotation and extending the service life of the device, and improving the stability and practicality of the device. Attached Figure Description

[0017] Figure 1This is a front side perspective view of the structure of this utility model;

[0018] Figure 2 This is a frontal sectional perspective view of the structure of this utility model;

[0019] Figure 3 This is a frontal sectional perspective view of a partial structure of the lifting platform of this utility model;

[0020] Figure 4 This is a front sectional perspective view of a portion of the support plate and auxiliary support assembly of this utility model;

[0021] Figure 5 This is a partial exploded side view of the auxiliary support component of this utility model.

[0022] In the diagram: 1. Base; 2. Column; 3. Lifting platform; 4. Support plate; 5. Auxiliary support assembly; 6. Lead screw; 21. Guide sleeve; 22. Bearing bush; 23. Oil injection hole; 24. Lubricating oil groove; 25. Screw sleeve; 31. Bearing positioning sleeve; 32. Rotating shaft; 33. Single row thrust ball bearing; 34. Single row radial ball bearing; 35. Bearing end cover; 36. Handwheel; 37. Clamping device; 38. Clamping groove; 39. Gasket; 40. Bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 One embodiment provided by this utility model:

[0025] A tapping machine lifting device includes a base 1, a column 2 fixedly connected to the top left side of the base 1, a lifting platform 3 sleeved in the middle of the outer wall of the column 2, a support plate 4 fixedly connected to the top of the column 2, and a tapping assembly fixedly installed on the top right side of the lifting platform 3. Through this design, the lifting platform 3 can drive the loaded tapping assembly to slide up and down along the column 2.

[0026] An auxiliary support assembly 5 is provided on the right side inside the support plate 4. A lead screw 6 is provided at the bottom of the auxiliary support assembly 5. A screw sleeve 25 is fitted on the lower part of the outer wall of the lead screw 6. The outer wall of the screw sleeve 25 is fixedly connected to the inner right wall of the lifting platform 3.

[0027] A guide sleeve 21 is fixedly connected to the inner left side of the lifting platform 3. Bearing bushes 22 are fixedly connected to the upper and lower sides of the inner wall of the guide sleeve 21. The bearing bushes 22 are fitted and slide on the outer wall of the column 2. This design allows the lifting platform 3 to slide up and down along the outer wall of the column 2 via the guide sleeve 21 and the bearing bushes 22. Oil injection holes 23 are provided on the top left and lower left sides of the guide sleeve 21. A lubricating oil groove 24 is provided on the inner wall of the bearing bushes 22. The oil injection holes 23 communicate with the lubricating oil groove 24. This design allows lubricating oil to be added to the inner wall of the bearing bushes 22 through the oil injection holes 23 and the lubricating oil groove 24, enabling the lifting platform 3 to smoothly rise and fall along the outer wall of the column 2.

[0028] The auxiliary support assembly 5 includes a bearing positioning sleeve 31. The outer wall of the bearing positioning sleeve 31 is fixedly connected to the inner wall of the right side of the support plate 4. A rotating shaft 32 is inserted in the middle of the bearing positioning sleeve 31. The bottom end of the rotating shaft 32 passes through the bottom of the bearing positioning sleeve 31 and is fixedly connected to the top of the lead screw 6. A bearing end cap 35 is fixedly connected to the top of the bearing positioning sleeve 31. Through this design, the ball bearing assembly inside the bearing positioning sleeve 31 is sealed and protected.

[0029] A single-row thrust ball bearing 33 is fitted onto the lower outer wall of the rotating shaft 32. The single-row thrust ball bearing 33 is positioned inside the lower part of the bearing positioning sleeve 31, and it bears the axial load, thus helping to axially support the rotating shaft 32. Two single-row radial ball bearings 34 are fitted onto the upper outer wall of the rotating shaft 32. These single-row radial ball bearings 34 are located inside the upper part of the rotating shaft 32, and the pair of parallel single-row radial ball bearings 34 support the rotating shaft 32. The combination of single-row thrust ball bearings 33 and single-row radial ball bearings 34 to assist in supporting the rotating shaft 32 effectively reduces its coefficient of friction during operation, minimizing friction and wear, thereby ensuring smooth rotation, improving mechanical efficiency, and effectively extending the service life of the device.

[0030] The top of the rotating shaft 32 passes through the bearing end cover 35 and is fitted with a handwheel 36. A retaining piece 37 is fixedly connected to the upper outer wall of the rotating shaft 32. The inner wall of the handwheel 36 has a retaining groove 38 corresponding to the retaining piece 37. This design allows the handwheel 36 to be limited and fitted onto the top of the outer wall of the rotating shaft 32, facilitating the synchronous rotation of the rotating shaft 32 and the lead screw 6 by the handwheel 36. A washer 39 is placed in the middle of the upper part of the handwheel 36, and a bolt 40 is inserted above the washer 39. The inner top wall of the rotating shaft 32 has a screw hole corresponding to the bolt 40. This design allows the handwheel 36 to be fixedly connected to the top of the rotating shaft 32.

[0031] Working principle: When in use, the handwheel 36 is turned manually, which drives the rotating shaft 32 to rotate to a limit position. The rotating shaft 32 drives the lead screw 6 to rotate synchronously. The lead screw 36 drives the screw sleeve 25 to slide up and down. The screw sleeve 25 drives the lifting platform 3 to slide synchronously. The lifting platform 3 drives the guide sleeve 21 and the bearing 22 to slide up and down along the outer wall of the column 2.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A tapping machine lifting device, comprising a base (1), characterized in that: A column (2) is fixedly connected to the top left side of the base (1), a lifting platform (3) is sleeved in the middle of the outer wall of the column (2), and a support plate (4) is fixedly connected to the top of the column (2). An auxiliary support assembly (5) is provided on the right side inside the support plate (4). A lead screw (6) is provided at the bottom of the auxiliary support assembly (5). A screw sleeve (25) is fitted on the lower part of the outer wall of the lead screw (6). The outer wall of the screw sleeve (25) is fixedly connected to the inner right wall of the lifting platform (3).

2. The tapping machine lifting device according to claim 1, characterized in that: The left inner wall of the lifting platform (3) is fixedly connected to a guide sleeve (21), and the upper and lower sides of the inner wall of the guide sleeve (21) are fixedly connected to bearing bushes (22). The bearing bushes (22) are sleeved and slid on the outer wall of the column (2).

3. The tapping machine lifting device according to claim 2, characterized in that: The guide sleeve (21) has an oil injection hole (23) on the top left side and the lower left side, and the inner wall of the bearing (22) has a lubricating oil groove (24). The oil injection hole (23) is connected to the lubricating oil groove (24).

4. The tapping machine lifting device according to claim 1, characterized in that: The auxiliary support assembly (5) includes a bearing positioning sleeve (31). The outer wall of the bearing positioning sleeve (31) is fixedly connected to the inner wall of the right side of the support plate (4). A rotating shaft (32) is inserted in the middle of the bearing positioning sleeve (31). The bottom end of the rotating shaft (32) passes through the bottom of the bearing positioning sleeve (31) and is fixedly connected to the top of the lead screw (6). A bearing end cap (35) is fixedly connected to the top of the bearing positioning sleeve (31).

5. A tapping machine lifting device according to claim 4, characterized in that: A single-row thrust ball bearing (33) is fitted below the outer wall of the rotating shaft (32). The single-row thrust ball bearing (33) is located inside the lower part of the bearing positioning sleeve (31). Two single-row radial ball bearings (34) are fitted above the outer wall of the rotating shaft (32). The single-row radial ball bearings (34) are located inside the upper part of the rotating shaft (32).

6. A tapping machine lifting device according to claim 5, characterized in that: The top end of the rotating shaft (32) passes through the bearing end cover (35) and is fitted with a handwheel (36). A clamp (37) is fixedly connected to the upper part of the outer wall of the rotating shaft (32), and a groove (38) corresponding to the clamp (37) is opened on the inner wall of the handwheel (36).

7. A tapping machine lifting device according to claim 6, characterized in that: A washer (39) is placed in the upper center of the handwheel (36), and a bolt (40) is inserted above the washer (39). A screw hole corresponding to the bolt (40) is opened on the top inner wall of the rotating shaft (32).

Images