Adaptive clamping gear shaft lathe

Abstract

The utility model provides a kind of self-adapting clamping gear shaft lathe, structure includes lathe body, drive case, crossbeam, thimble positioning seat, cutting table;The drive case is located on lathe body upper end face left part, and the end face of the drive case towards the center of lathe body is rotationally equipped with self-adapting chuck;The crossbeam is horizontally equipped in the middle of lathe body upper end face;The thimble positioning seat is slidably equipped on crossbeam, and the end face of the thimble positioning seat towards the center of lathe body is clamped and fixed with shock-absorbing adjustable thimble structure;The cutting table is horizontally slidably equipped in the front end face of crossbeam, and the utility model provides a kind of self-adapting clamping gear shaft lathe, is equipped with shock-absorbing adjustable thimble structure on lathe, when thimble head is vibrated by gear shaft, by rotating block and shock-absorbing assembly, to reduce resonance phenomenon in this way, prevent causing cutting surface to appear tremor even tool collapse.

Description

Technical Field

[0001] This utility model relates to the field of lathe technology, and in particular to an adaptive clamping gear shaft lathe. Background Technology

[0002] A lathe is a metalworking machine that rotates a workpiece and cuts it with a cutting tool. It is widely used in the field of machinery manufacturing.

[0003] In existing lathes used for machining gear shafts, the center pins that position the gear shafts are fixed. When the spindle speed of the lathe approaches the natural frequency of the gear shaft, the rigid center pins will exacerbate the resonance phenomenon, causing chatter marks on the cutting surface or even tool breakage. Utility Model Content

[0004] The purpose of this invention is to provide an adaptive clamping gear shaft lathe to solve the above-mentioned problems.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model provides an adaptive clamping gear shaft lathe, the structure of which includes a lathe body, a drive box, a crossbeam, an ejector pin locating seat, and a cutting table; the drive box is located on the left side of the upper end face of the lathe body, and an adaptive chuck is rotatably mounted on the end face of the drive box facing the center of the lathe body; the crossbeam is horizontally located in the middle of the upper end face of the lathe body; the ejector pin locating seat is slidably mounted on the crossbeam, and a shock-absorbing adjustable ejector pin structure is clamped and fixed on the end face of the ejector pin locating seat facing the center of the lathe body; the cutting table is horizontally slidably mounted on the front end face of the crossbeam.

[0007] The shock-absorbing adjustable ejector pin structure includes a connecting rod clamped and fixed by an ejector pin positioning seat and an ejector pin head. The ejector pin head is located at the end of the connecting rod away from the ejector pin positioning seat. The connecting rod has an insertion groove. The ejector pin head has a rotating block embedded in the insertion groove. The inner wall of the insertion groove opening has a bearing rotatably connected to the rotating block. The rotating block has a core tightly embedded in the insertion groove. The end of the bearing away from the ejector pin head has a shock-absorbing component that contacts the rotating block. The outer wall of the connecting rod has an adjustment slot adapted to the shock-absorbing component.

[0008] In one embodiment, in order to adaptively clamp the gear shaft, the adaptive chuck is specifically a servo chuck, and the drive box is equipped with a motor that drives the servo chuck to rotate.

[0009] In one embodiment, to improve positioning accuracy, the adaptive chuck and the ejector pin are located on the same axis.

[0010] In one embodiment, a cutting tool is mounted on the cutting table for machining.

[0011] In one embodiment, to improve the damping adjustment according to the gear shaft length, the damping assembly includes a damping block and a positioning hole located at the center of the damping block and fitted with a top core. The damping block has a plurality of damping holes arranged in a ring around the positioning hole on its end face facing the rotating block. One end of the damping hole facing the rotating block is provided with a spherical positioning groove, and the other end of the damping hole is threadedly connected to a hemispherical adjusting block. A damping ball is movably disposed in the spherical positioning groove. One end of the damping ball protrudes from the spherical positioning groove and contacts the rotating block, and a damping spring is provided between the other end and the hemispherical adjusting block.

[0012] In one embodiment, in order to facilitate the tool to be inserted into the adjustment slot and act on the tool action groove so that the hemispherical adjustment block can rotate, the end of the hemispherical adjustment block away from the damping spring extends into the adjustment slot, and the outer wall of the part of the hemispherical adjustment block located in the adjustment slot is provided with at least one tool action groove.

[0013] In one embodiment, both the tool action groove and the adjustment groove are inclined.

[0014] The advantages or beneficial effects of the above technical solutions include at least the following:

[0015] This utility model relates to an adaptive clamping gear shaft lathe, which is equipped with a shock-absorbing adjustable ejector structure. When the ejector head is subjected to vibration of the gear shaft, the rotating block and the shock-absorbing component reduce the resonance phenomenon and prevent chatter marks or even tool breakage on the cutting surface. Attached Figure Description

[0016] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0017] Figure 1 This is a three-dimensional structural diagram of an adaptive clamping gear shaft lathe according to the present invention;

[0018] Figure 2 This is a front view schematic diagram of the adaptive clamping gear shaft lathe of this utility model;

[0019] Figure 3 A cross-sectional schematic diagram of a shock-absorbing adjustable ejector pin structure;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the shock absorption component;

[0021] Figure 5 This is a three-dimensional structural diagram of the shock absorption component. Detailed Implementation

[0022] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0023] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] It should be understood that the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0025] It should be noted that the terms "a" and "several" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0026] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0027] Reference Figures 1-5 An adaptive clamping gear shaft lathe includes a lathe body 1, a drive box 2, a crossbeam 3, a center locating seat 4, and a cutting table 5. The drive box 2 is located on the left side of the upper end face of the lathe body 1, and an adaptive chuck 21 is rotatably mounted on the end face of the drive box 2 facing the center of the lathe body 1. The crossbeam 3 is horizontally located in the middle of the upper end face of the lathe body 1. The center locating seat 4 is slidably mounted on the crossbeam 3, and a shock-absorbing adjustable center structure 41 is clamped and fixed on the end face of the center of the lathe body 1. The cutting table 5 is horizontally slidably mounted on the front end face of the crossbeam 3.

[0028] The shock-absorbing adjustable ejector pin structure 41 includes a connecting rod 411 and an ejector pin head 412, which are clamped and fixed by the ejector pin positioning seat 4. The ejector pin head 412 is located at the end of the connecting rod 411 away from the ejector pin positioning seat 4. The connecting rod 411 is provided with an insertion groove 413. The ejector pin head 412 is provided with a rotating block 414 that is embedded in the insertion groove 413. The inner wall of the opening of the insertion groove 413 is provided with a bearing 416 that is rotatably connected to the rotating block 414. The rotating block 414 is provided with a core 415 that is tightly embedded in the insertion groove 413. The end of the bearing 416 away from the ejector pin head 412 is provided with a shock-absorbing component 417 that contacts the rotating block 414. The outer wall of the connecting rod 411 is provided with an adjustment slot 418 that is adapted to the shock-absorbing component 417.

[0029] In one embodiment, in order to adaptively clamp the gear shaft, the adaptive chuck 21 is specifically a servo chuck, and the drive box 2 is equipped with a motor that drives the servo chuck to rotate.

[0030] Among them, the servo chuck is a machine tool fixture that achieves high-precision clamping and indexing through servo motor drive. Its core advantages are fast dynamic response, accurate positioning and adjustable clamping force.

[0031] In one embodiment, to improve positioning accuracy, the adaptive chuck 21 and the ejector pin 412 are located on the same axis.

[0032] In one embodiment, a cutting tool is mounted on the cutting table 5 for machining.

[0033] In one embodiment, to improve the damping adjustment according to the gear shaft length, the damping assembly 417 includes a damping block 4171 and a positioning hole 4172 located at the center of the damping block 4171 and fitted with a top core 415. The damping block 4171 has a plurality of damping holes 4173 arranged in a ring around the positioning hole 4172 on its end face facing the rotating block 414. One end of the damping hole 4173 facing the rotating block 414 is provided with a spherical positioning groove 4174. The other end of the damping hole 4173 is threadedly connected to a hemispherical adjusting block 4175. A damping ball 4176 is movably disposed in the spherical positioning groove 4174. One end of the damping ball 4176 protrudes from the spherical positioning groove 4174 and contacts the rotating block 414. A damping spring 4177 is provided between the other end and the hemispherical adjusting block 4175.

[0034] Among them, the damping sphere 4176 is made of high-damping manganese copper alloy, which has damping characteristics and consumes vibration energy through grain boundary slip and twin boundary movement.

[0035] Among them, the shock-absorbing sphere 4176 is made of shape memory alloy material, which has shock-absorbing characteristics. It absorbs impact energy through stress-induced martensitic phase transformation. The phase transformation process is reversible and the energy conversion efficiency is over 70%.

[0036] In one embodiment, in order to facilitate the insertion of a tool into the adjustment slot 418 to drive the hemispherical adjustment block 4175 to rotate, one end of the hemispherical adjustment block 4175 away from the damping spring 4177 extends into the adjustment slot 418, and the outer wall of the part of the hemispherical adjustment block 4175 located in the adjustment slot 418 is provided with at least one tool action groove 4178.

[0037] In one embodiment, both the tool action groove 4178 and the adjustment groove 418 are inclined.

[0038] The lathe is equipped with a shock-absorbing adjustable ejector structure 41. When the ejector head 412 is subjected to the vibration of the gear shaft, the rotating block 414 and the shock-absorbing component 417 reduce the resonance phenomenon and prevent chatter marks or even tool breakage on the cutting surface.

[0039] The damping principle of the damping component 417 is as follows: the damping ball 4176 contacts the rotating block 414, and the damping ball 4176, in conjunction with the deformation and compression of the damping spring 4177, moves within the spherical positioning groove 4174 to dissipate vibration. During adjustment, the tool rotates the hemispherical adjusting block 4175, which screws into the damping hole 4173, thereby compressing the damping spring 4177 and increasing the rigidity of the contact. Conversely, it increases the flexibility of the contact.

[0040] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.

Claims

1. An adaptive clamping gear shaft lathe, characterized in that: Its structure includes the lathe body (1); A drive box (2) is located on the left side of the upper end face of the lathe body (1). The end face of the drive box (2) facing the center of the lathe body (1) is provided with an adaptive chuck (21). A crossbeam (3) is horizontally positioned at the center of the upper end face of the lathe body (1); The ejector positioning seat (4) is slidably disposed on the crossbeam (3), and the end face of the ejector positioning seat (4) facing the center of the lathe body (1) is clamped and fixed with a shock-absorbing adjustable ejector structure (41). The cutting table (5) is horizontally slidably disposed on the front end face of the crossbeam (3); The shock-absorbing adjustable ejector pin structure (41) includes a connecting rod (411) clamped and fixed by an ejector pin positioning seat (4) and an ejector pin head (412). The ejector pin head (412) is located at the end of the connecting rod (411) away from the ejector pin positioning seat (4). The connecting rod (411) has an insertion groove (413). The ejector pin head (412) has a rotating block (414) embedded in the insertion groove (413). The insertion groove (413) is open. The inner wall of the opening is provided with a bearing (416) that is rotatably connected to the rotating block (414). The rotating block (414) is provided with a core (415) that is tightly embedded in the insertion groove (413). The end of the bearing (416) away from the pin head (412) is provided with a shock-absorbing component (417) that contacts the rotating block (414). The outer wall of the connecting rod (411) is provided with an adjustment slot (418) that is adapted to the shock-absorbing component (417).

2. The adaptive clamping gear shaft lathe according to claim 1, characterized in that: The adaptive chuck (21) is specifically a servo chuck, and the drive box (2) is equipped with a motor that drives the servo chuck to rotate.

3. The adaptive clamping gear shaft lathe according to claim 2, characterized in that: The adaptive chuck (21) and the ejector head (412) are located on the same axis.

4. The adaptive clamping gear shaft lathe according to claim 1, characterized in that: The cutting table (5) is equipped with cutting tools.

5. The adaptive clamping gear shaft lathe according to claim 1, characterized in that: The shock-absorbing component (417) includes a shock-absorbing block (4171) and a positioning hole (4172) located at the center of the shock-absorbing block (4171) and fitted with a top core (415). The shock-absorbing block (4171) has a plurality of shock-absorbing holes (4173) arranged in a ring around the positioning hole (4172) on its end face facing the rotating block (414). One end of the shock-absorbing hole (4173) facing the rotating block (414) is provided with a spherical positioning groove (4174). The other end of the shock-absorbing hole (4173) is threadedly connected to a hemispherical adjusting block (4175). A shock-absorbing ball (4176) is movably arranged in the spherical positioning groove (4174). One end of the shock-absorbing ball (4176) protrudes from the spherical positioning groove (4174) and contacts the rotating block (414). A shock-absorbing spring (4177) is provided between the other end and the hemispherical adjusting block (4175).

6. The adaptive clamping gear shaft lathe according to claim 5, characterized in that: The end of the hemispherical adjusting block (4175) away from the damping spring (4177) extends into the adjusting slot (418), and the outer wall of the part of the hemispherical adjusting block (4175) located in the adjusting slot (418) is provided with at least one tool action groove (4178).

7. The adaptive clamping gear shaft lathe according to claim 6, characterized in that: Both the tool action groove (4178) and the adjustment groove (418) are inclined.

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