A lathe and tool post auxiliary support device
By using a bearing combination structure of lathe and tool post auxiliary support device, slender shaft workpieces are stabilized, the support area is increased, the bending and vibration problems in the machining of slender shafts are solved, and the product quality is improved.
Patent Information
- Application Number
- CN202522312673.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-10-31
AI Technical Summary
When machining slender shafts, they are easily affected by radial cutting forces, resulting in bending and cutting vibrations, which can lead to multi-faceted defects and affect product quality.
Design a lathe follow post auxiliary support device, which is connected to the housing by interference fit of front bearing, intermediate bearing and rear bearing, front retaining ring and rear retaining ring are fixedly connected to the housing, and adjusting nut is threaded to the housing to form a bearing assembly structure, which stabilizes slender shaft-like workpieces, increases the support area of the follow post contact, and achieves precise positioning.
It reduces radial bending and cutting vibration during the machining of slender shafts, improves product quality, and avoids defects in multi-faceted prisms.
Smart Images
Figure CN224939523U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of precision fixture positioning technology and relates to an auxiliary support device for lathe tool post. Background Technology
[0002] Faced with a complex international environment, China's advanced manufacturing industry is not only the core force in meeting challenges, but also a key engine for promoting China's economic transformation and upgrading and enhancing its international competitiveness.
[0003] Machinery manufacturing is a crucial component of my country's manufacturing industry. Producing high-precision products requires advanced manufacturing processes, and various process problems arise when machining complex-shaped mechanical products with high precision requirements. Products like slender shafts, which constitute important parts in various precision mechanical equipment, are particularly difficult to machine if their length-to-diameter ratio exceeds 25. During lathe machining, they are easily subjected to radial cutting forces, leading to radial bending, especially noticeable with excessive depths of cut. Furthermore, slender shafts are highly susceptible to cutting vibrations during the cutting process, resulting in polygonal surface defects, affecting product quality, and potentially causing workpiece scrap. The following two issues can be summarized: Question 1: During the machining of slender shafts, they are prone to bending due to radial cutting forces.
[0004] Question 2: During the machining of slender shafts, the workpiece is prone to vibration, resulting in multi-faceted prism defects that affect product quality.
[0005] In response to the issues raised in the appeal, and based on the principle of reducing radial bending and cutting vibration during the machining of slender shafts and ensuring product quality, a lathe follow post auxiliary support device is designed.
[0006] Compared with the original process, the production process using this device has the advantages of reducing radial bending and cutting vibration during the machining of slender shafts, thus ensuring product quality. Utility Model Content
[0007] The technical problem of this utility model is: Question 1: During the machining of slender shafts, they are prone to bending due to radial cutting forces.
[0008] Question 2: During the machining of slender shafts, the workpiece is prone to vibration, resulting in multi-faceted prism defects that affect product quality.
[0009] The purpose of this utility model is: The present invention aims to provide an auxiliary support device for a lathe follow post. The application of this device can stably clamp slender shaft workpieces, increase the force-bearing area of the longitudinal support of the follow post on the slender shaft, further reduce the radial bending and cutting vibration phenomena generated when machining slender shaft workpieces, and at the same time facilitate the precise positioning of follow post contacts of different diameters, and has good interchangeability.
[0010] The technical solution of this utility model is: This utility model proposes an auxiliary support device for a lathe tool post. The device includes: a front retaining ring (1), a front bearing (2), an intermediate bearing (3), a housing (4), a rear bearing (5), a rear retaining ring (6), and an adjusting nut (7). The front retaining ring (1) is fixedly connected to the housing (4), the front bearing (2) is interference-fitted to the housing (4), the intermediate bearing (3) is interference-fitted to the housing (4), the rear bearing (5) is interference-fitted to the housing (4), the rear retaining ring (6) is fixedly connected to the housing (4), and the adjusting nut (7) is threaded to the housing (4). The features are as follows: the front bearing (2), the intermediate bearing (3), and the rear bearing (5) are connected to the housing with an interference fit; the front retaining ring (1) and the rear retaining ring (6) are fixedly connected to the housing (4); the front bearing (2), the intermediate bearing (3), and the rear bearing (5) are precisely positioned; the adjusting nut (7) and the housing (4) are threadedly connected; the adjusting nut (7) can be tightened; the lathe follower post is positioned close to the lathe tool holder contact; the slender shaft workpiece to be processed is stabilized through the inner holes of the front bearing (2), the intermediate bearing (3), and the rear bearing (5); as the lathe tool holder moves, this auxiliary support device moves with the follower post contact to assist in the processing of slender shaft workpieces. The lathe follow post auxiliary support device is characterized in that the front bearing (2), intermediate bearing (3), and rear bearing (5) are interference-fitted with the housing, and the front retaining ring (1) and rear retaining ring (6) are fixedly connected with the housing (4), thereby precisely positioning the front bearing (2), intermediate bearing (3), and rear bearing (5) and stabilizing the slender shaft workpiece to be machined through the inner holes of the front bearing (2), intermediate bearing (3), and rear bearing (5). The lathe follow post auxiliary support device is further characterized in that the adjusting nut (7) is threadedly connected to the housing (4), and tightening the adjusting nut (7) to the housing (4) precisely positions it against the lathe follow post contact point.
[0011] The advantages and beneficial effects of this utility model are: Effect 1: Using the follow post auxiliary device can counteract the influence of radial cutting force during machining and reduce bending.
[0012] Effect 2: Using the follow post auxiliary device can straighten slender shaft-like workpieces, increase the working area of the follow post contact, significantly reduce vibrations generated during processing, avoid polyhedral surface defects, and improve product quality.
[0013] This utility model is designed to address the problems existing in the processing of slender shaft workpieces. The device mainly consists of two parts: a bearing assembly structure and an adjustable structure. The bearing assembly structure uses the inner ring of the bearing to stabilize the slender shaft workpiece, and the adjusting device uses the adjusting nut to accurately position the follower post contact. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of a lathe follow post auxiliary support device according to an embodiment of the present invention; Figure 2 This is a schematic diagram illustrating the working scenario of the lathe follow post auxiliary support device according to an embodiment of this utility model. Among them, 1-front retaining ring, 2-front bearing, 3-intermediate bearing, 4-housing, 5-rear bearing, 6-rear retaining ring, 7-adjusting nut. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0017] It should be noted that, where there is no conflict, the embodiments of this utility model and the features therein can be combined with each other, and the various embodiments can be referenced and cited in turn. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0018] See Figure 1 The utility model lathe follow post auxiliary support device includes: a front retaining ring (1), a front bearing (2), an intermediate bearing (3), a housing (4), a rear bearing (5), a rear retaining ring (6), and an adjusting nut (7). Among them: the front retaining ring (1) is fixedly connected to the housing (4), the front bearing (2) is interference-fitted to the housing (4), the intermediate bearing (3) is interference-fitted to the housing (4), the rear bearing (5) is interference-fitted to the housing (4), the rear retaining ring (6) is fixedly connected to the housing (4), and the adjusting nut (7) is threadedly connected to the housing (4).
[0019] In some embodiments, the front retaining ring (1) is fixedly connected to the housing (4), the front bearing (2) is interference-fitted to the housing (4), the intermediate bearing (3) is interference-fitted to the housing (4), the rear bearing (5) is interference-fitted to the housing (4), the rear retaining ring (6) is fixedly connected to the housing (4), and the adjusting nut (7) is threaded to the housing (4). The features are as follows: the front bearing (2), the intermediate bearing (3), and the rear bearing (5) are connected to the housing with an interference fit; the front retaining ring (1) and the rear retaining ring (6) are fixedly connected to the housing (4); the front bearing (2), the intermediate bearing (3), and the rear bearing (5) are precisely positioned; the adjusting nut (7) and the housing (4) are threadedly connected; the adjusting nut (7) can be tightened; the lathe follower post is positioned close to the lathe tool holder contact; the slender shaft workpiece to be processed is stabilized through the inner holes of the front bearing (2), the intermediate bearing (3), and the rear bearing (5); as the lathe tool holder moves, this auxiliary support device moves with the follower post contact to assist in the processing of slender shaft workpieces.
[0020] This invention achieves stable clamping of slender shaft workpieces through a bearing combination structure with auxiliary support from the lathe tool post, increases the force-bearing area of the longitudinal support of the slender shaft by the tool post, and further reduces the radial bending phenomenon generated when machining slender shaft workpieces.
[0021] In some embodiments, the front bearing (2), intermediate bearing (3), and rear bearing (5) are interference-fitted with the housing (4), and the front retaining ring (1) and rear retaining ring (6) are fixedly connected with the housing (4) to precisely position the front bearing (2), intermediate bearing (3), and rear bearing (5). The adjusting nut (7) is threadedly connected with the housing (4) so that the adjusting nut (7) can be tightened and positioned close to the lathe follow post contact position. The slender shaft workpiece to be processed is stabilized through the inner holes of the front bearing (2), intermediate bearing (3), and rear bearing (5). As the lathe tool post moves, this auxiliary support device moves with the follow post contact to assist in the processing of slender shaft workpieces.
[0022] In some embodiments, the front bearing (2), the intermediate bearing (3), and the rear bearing (5) are interference-fitted with the housing, and the front retaining ring (1) and the rear retaining ring (6) are fixedly connected with the housing (4). The front bearing (2), the intermediate bearing (3), and the rear bearing (5) are precisely positioned, and the slender shaft workpiece to be processed is stabilized through the inner holes of the front bearing (2), the intermediate bearing (3), and the rear bearing (5).
[0023] In some embodiments, the adjusting nut (7) is threadedly connected to the housing (4), and the adjusting nut (7) and the housing (4) are tightened to be precisely positioned close to the lathe follower tool holder contact position.
[0024] In some embodiments, the front retaining ring (1) is a standard type retaining ring for bores, which is installed in the front retaining ring groove of the housing (4) to limit the displacement of the front bearing (2) in the axial direction.
[0025] In some embodiments, the front bearing (2) is a deep groove ball bearing, which is installed in the inner hole of the housing (4) and located behind the front retaining ring (1). The inner hole of the front bearing (2) has a small fitting clearance with the slender shaft-like workpiece, which can straighten the slender shaft and play a supporting role.
[0026] In some embodiments, the intermediate bearing (3) is a deep groove ball bearing, which is installed in the inner hole of the housing (4) and located behind the front bearing (2). The inner hole of the intermediate bearing (3) has a small clearance with the slender shaft workpiece, which can straighten the slender shaft and play a supporting role, while preventing iron filings generated during processing from entering the inner cavity of the housing (4).
[0027] In some embodiments, the housing (4) is made of 40Cr material and is heat-treated to have good mechanical properties. The outer diameter is threaded for fastening with the adjusting nut (7). The housing (4) and the adjusting nut (7) are fastened together. The inner cavity is a through hole with a retaining ring groove for easy installation of bearings and retaining rings.
[0028] In some embodiments, the rear bearing (5) is a deep groove ball bearing, which is installed in the inner hole of the housing (4) and located behind the intermediate bearing (3). The inner hole of the rear bearing (5) has a small fit clearance with the slender shaft workpiece, which can straighten the slender shaft and play a supporting role, increasing the contact area between the auxiliary device and the slender shaft workpiece.
[0029] In some embodiments, the rear retaining ring (6) is a standard type retaining ring for bores, installed in the rear retaining ring groove of the housing (4) to limit the displacement of the rear bearing (5) in the axial direction.
[0030] In some embodiments, the adjusting nut (7) is made of 40Cr material and is heat-treated to have good mechanical properties. The inner hole has threads for fastening with the housing (4) and for precise positioning close to the lathe tool holder contact position.
[0031] refer to Figure 2 The working process of this utility model lathe tool post auxiliary support device is as follows: Step 1: The front bearing (2), intermediate bearing (3), and rear bearing (5) are fixed by the front retaining ring (1) and the rear retaining ring (6) to limit the axial movement of the bearings and form a bearing assembly structure.
[0032] Step 2: Pass the slender shaft workpiece to be processed through the inner rings of the front bearing (2), intermediate bearing (3), and rear bearing (5), clamp one end of the slender shaft workpiece through the lathe chuck, and press the other end through the lathe tailstock center.
[0033] Step 3: Adjust the lathe follow post contact, connect the follow post contact to the housing (4), tighten the adjusting nut (7), and position the follow post contact close to the housing (4).
[0034] Step 4: As the slender shaft is machined on the lathe, the follower post moves together with the lathe slide box, and the housing (4) moves in coordination with the follower post contact. After the machining is completed, lift the follower post contact, release the lathe chuck, and take the slender shaft out from the front bearing (2), the intermediate bearing (3), and the rear bearing (5).
[0035] The key points of this utility model patent are as follows: a. The bearing assembly structure can stably clamp slender shaft-type workpieces, providing good stability.
[0036] b. By using an auxiliary support device, the support area of the tool holder contact can be increased, further reducing radial bending and cutting vibration generated during the machining of slender shafts.
[0037] c. It facilitates precise positioning of follower posts with different diameters and has good interchangeability.
[0038] It should be noted that the above process operations can be combined to varying degrees. For the sake of brevity, the implementation methods of various combinations will not be elaborated here. Those skilled in the art can flexibly adjust the order of the above operation steps or flexibly combine the above steps according to actual needs.
[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should be covered within the protection scope of this utility model.
Claims
1. A lathe and tool post auxiliary support device, characterized in that, include: The front retaining ring (1), front bearing (2), intermediate bearing (3), housing (4), rear bearing (5), rear retaining ring (6), and adjusting nut (7) are provided. The front retaining ring (1) is fixedly connected to the housing (4), the front bearing (2) is interference-fitted to the housing (4), the intermediate bearing (3) is interference-fitted to the housing (4), the rear bearing (5) is interference-fitted to the housing (4), the rear retaining ring (6) is fixedly connected to the housing (4), and the adjusting nut (7) is threaded to the housing (4).
2. The lathe tool post auxiliary support device according to claim 1, characterized in that, in: The front retaining ring (1) is a retaining ring for the bore, which is installed in the front retaining ring groove of the housing (4) to limit the displacement of the front bearing (2) in the axial direction.
3. The lathe tool post auxiliary support device according to claim 1, characterized in that, in: The front bearing (2) is a deep groove ball bearing, which is installed in the inner hole of the housing (4) and located behind the front retaining ring (1). The inner hole of the front bearing (2) has a small fit clearance with the slender shaft workpiece, which is used to straighten the slender shaft and play a supporting role.
4. The lathe tool post auxiliary support device according to claim 1, characterized in that, in: The intermediate bearing (3) is a deep groove ball bearing, which is installed in the inner hole of the housing (4) and located behind the front bearing (2). The inner hole of the intermediate bearing (3) has a small clearance with the slender shaft workpiece, which can straighten the slender shaft and play a supporting role. At the same time, it can prevent iron filings generated during processing from entering the inner cavity of the housing (4).
5. The lathe tool post auxiliary support device according to claim 1, characterized in that, in: The housing (4) is made of 40Cr material and has threads on the outer diameter for fastening with the adjusting nut (7). The inner cavity is a through hole with a retaining ring groove.
6. The lathe tool post auxiliary support device according to claim 1, characterized in that, in: The rear bearing (5) is a deep groove ball bearing, which is installed in the inner hole of the housing (4) and located behind the intermediate bearing (3). The inner hole of the rear bearing (5) has a small clearance with the slender shaft-like workpiece.
7. The lathe tool post auxiliary support device according to claim 1, characterized in that, in: The rear retaining ring (6) is a retaining ring for the bore, which is installed in the rear retaining ring groove of the housing (4) to limit the displacement of the rear bearing (5) in the axial direction.
8. A lathe tool post auxiliary support device according to any one of claims 1-7, characterized in that, in: The adjusting nut (7) is made of 40Cr material and has a threaded inner hole. It is used to fasten to the housing (4) and to be precisely positioned close to the lathe tool holder contact position.