Shaft turning machine tool for automobile parts

Abstract

The invention discloses an automobile part shaft turning machine tool, and relates to the field of turning machine tools. An automobile part shaft turning machine tool comprises an axle, a tip rotating mechanism, a clamping mechanism and a liftable scrap iron collecting cover, the clamping mechanism comprises a clamping sleeve composed of a plurality of arc-shaped plates, and the outer side of each arc-shaped plate is rotationally connected with a moving rod; a tension spring and a thrust spring are arranged between the two ends of a transverse rod on the movable rod and the fixing plate correspondingly, so that the clamping sleeve is in a circular truncated cone shape with the diameter of a top opening larger than that of the bottom in the non-clamping state. According to the three-layer linkage scrap iron collecting cover, through the synergistic effect of mechanical rotation and the split type annular clamping plate, totally-closed management of turning scrap iron from generation, flow guiding to collection is achieved, the rotating collecting inner cover actively throws residual scrap iron into a collecting area, dynamic sealing between the split type annular clamping plate and the collecting inner cover is matched, and the scrap iron collecting efficiency is improved. And the risk that scrap iron invades the clamping mechanism is avoided, and long-term stable operation of equipment is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of turning machine tools, and particularly relates to a turning machine tool for automotive part shafts. Background Art

[0002] A turning machine tool is a machine tool mainly used for machining rotary parts. By rotating the workpiece and using a cutting tool for cutting, the required shape and size can be obtained. It is applied to machining workpieces such as shafts, discs, sleeves, and other workpieces with rotary surfaces; When a conventional turning machine tool turns a shaft workpiece, the shaft workpiece is placed horizontally. The long shaft workpiece placed horizontally is clamped by a double-center mechanism and driven to rotate. However, when encountering the two centers of a slender shaft, affected by the center of gravity, there will be a certain bending in the middle of the workpiece, affecting the accuracy of subsequent turning. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems in the prior art, and a turning machine tool for automotive part shafts is proposed.

[0004] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: A turning machine tool for automotive part shafts includes a vehicle axle, a center rotation mechanism, a clamping mechanism, and a liftable chip collection cover. The clamping mechanism includes a clamping sleeve composed of a plurality of arc-shaped plates. The outer sides of the arc-shaped plates are rotatably connected to moving rods. Tension springs and thrust springs are respectively arranged between the two ends of the cross bars on the moving rods and the fixing plates, so that the clamping sleeve presents a frustum shape with a larger top opening diameter than the bottom in the non-clamping state; The chip collection cover includes a collection outer cover, a collection middle cover, and a collection inner cover arranged in layers. The collection inner cover is linked with the clamping sleeve through a split-ring clamping plate. The split-ring clamping plate is composed of a plurality of arc-shaped clamping plates corresponding to the number of arc-shaped plates. Each arc-shaped clamping plate is fixedly connected to the top end of the corresponding arc-shaped plate through a connecting rod.

[0005] Preferably, when the vehicle axle is inserted, the clamping sleeve changes from a frustum shape to a cylindrical clamping state, and the split-ring clamping plate is driven by the connecting rod to closely fit the outer wall of the vehicle axle, and the closed state is maintained between the arc-shaped clamping plates. The collection inner cover rotates synchronously with the split-ring clamping plate during turning.

[0006] Preferably, the tension spring is arranged between the upper end of the cross bar and the top of the arc-shaped plate, and the thrust spring is arranged between the lower end of the cross bar and the bottom of the arc-shaped plate.

[0007] Preferably, the inner side of the collection inner cover is axially rotationally matched with the inner wall of the collection outer cover through a bearing. A clamping protrusion and a clamping groove are respectively arranged between the inner side of the collection inner cover and the outer wall of the split-ring clamping plate, and the two are vertically engaged with each other.

[0008] Preferably, the bottom of the middle chip collection cover is fixedly connected to the bottom end of the inner wall of the outer chip collection cover. A discharge through hole is provided at the bottom of the middle chip collection cover, and the edge of the inner chip collection cover is provided with a diversion inclined surface that slopes upward.

[0009] Preferably, the diameter of the top opening of the middle chip collection cover gradually decreases from bottom to top.

[0010] Preferably, a mounting frame is fixedly connected to the outer side of the moving rod, and a connecting frame is fixedly connected to the bottom end of the mounting frame.

[0011] Preferably, the center point mechanism includes a first center point mechanism located below the axle and a second center point mechanism located above the axle and capable of telescoping.

[0012] Preferably, the first center point mechanism includes a first center point block for connecting to the groove at the bottom end of the axle. A circular disc is fixedly connected to the bottom end of the first center point block, and a rotating mechanism is connected to the middle of the bottom end of the circular disc.

[0013] Preferably, the rotating mechanism includes a motor and a rotating shaft. The motor is fixedly installed inside the support frame. A gear is fixedly connected to the output end of the motor. The top of the rotating shaft is fixedly connected to the bottom of the circular disc. The bottom of the rotating shaft is rotatably connected to the bottom end of the inner wall of the support frame. A driven gear is fixedly installed on the outer wall of the rotating shaft, and the driven gear is meshed with the gear.

[0014] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: the present invention; 1. For this turning machine tool for automotive part shafts, the three-layer linked chip collection cover, through the coordinated action of mechanical rotation and the split ring-shaped clamping plate, realizes the fully enclosed management of the turning chips from generation, diversion to collection. The rotating inner chip collection cover actively throws the residual chips into the collection area, and with the dynamic seal between the split ring-shaped clamping plate and the inner chip collection cover, the risk of chips invading the clamping mechanism is eliminated, ensuring the long-term stable operation of the equipment; 2. For this turning machine tool for automotive part shafts, through the innovative composite drive structure of the tension spring, the thrust spring and the adjustment mechanism, seamless conversion from rough positioning to precise clamping of the clamping sleeve is realized, automatically fitting the axle and eliminating clamping eccentricity. The roller array design reduces surface scratches of the workpiece, and at the same time allows for slight self-aligning of the axle. Description of the Drawings

[0015] In the drawings: Figure 1 is the front view of a turning machine tool for automotive part shafts proposed by the present invention; Figure 2 is the exploded view of a turning machine tool for automotive part shafts proposed by the present invention; Figure 3 Schematic cross-sectional view of the axle of a turning machine for automotive parts shafts proposed by the present invention; Figure 4 Top view of the adjustment mechanism of a turning machine for automotive parts shafts proposed by the present invention; Figure 5 Front view of the arc plate of a turning machine for automotive parts shafts proposed by the present invention; Figure 6 Front view of the connecting frame of a turning machine for automotive parts shafts proposed by the present invention; Figure 7 Front view of the moving rod of a turning machine for automotive parts shafts proposed by the present invention; Figure 8 Front cross-sectional view of the clamping sleeve of a turning machine for automotive parts shafts proposed by the present invention; Figure 9 Schematic diagram of the axle center line and center line of the center point of a turning machine for automotive parts shafts proposed by the present invention.

[0016] In the figure: 1, axle; 2, center point mechanism; 201, first center point mechanism; 2011, first center point block; 2012, circular disc; 202, second center point mechanism; 2021, second center point block; 2022, connecting shaft; 2023, telescopic mechanism; 3, rotating mechanism; 301, motor; 302, gear; 303, driven gear; 304, rotating shaft; 4, clamping mechanism; 401, connecting frame; 402, mounting frame; 5, clamping sleeve; 501, arc plate; 502, moving rod; 503, roller 1; 504, cross bar; 505, tension spring; 506, thrust spring; 6, support frame; 7, adjustment mechanism; 701, annular plate; 702, progressive arc groove; 703, roller 2; 704, second thrust spring; 705, first telescopic rod; 8, chip collection cover; 801, collection outer cover; 802, collection middle cover; 803, collection inner cover; 804, discharge through hole; 805, second telescopic rod; 9, split annular clamping plate; 901, arc clamping plate; 902, connecting rod; 10, protective frame; A, axle center line; B, center line of the center point. Detailed implementation manners

[0017] The following further elaborates on the present invention in detail in conjunction with the accompanying drawings and embodiments, so that those skilled in the art can implement it with reference to the text of the specification.

[0018] It should be understood that terms such as "having", "including", and "comprising" as used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0019] In the description of the present invention, the orientation or positional relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0020] Embodiment 1: Refer to Figures 1 - 8 , a turning machine for automotive part shafts, comprising a shaft 1 and a center mechanism 2: installed at both ends of the shaft 1, namely a first center mechanism 201 and a second center mechanism 202 respectively. A clamping mechanism 4 is provided at the connection between the first center mechanism 201 located at the bottom end of the shaft 1 and the shaft 1. In addition, a rotating mechanism 3 is connected to the outside of the first center mechanism 201. The clamping mechanism 4 includes a clamping sleeve 5 that can open and close. The clamping sleeve 5 is composed of a plurality of arc-shaped plates 501. A moving rod 502 is rotatably connected to the middle of the outer side wall of the arc-shaped plate 501. A cross bar 504 is fixedly connected to the outer wall of the moving rod 502. A tension spring 505 and a thrust spring 506 are respectively connected between both ends of the cross bar 504 and both ends of the outer side wall of the arc-shaped plate 501. Due to the tension spring 505 and the thrust spring 506, the clamping sleeve 5 presents a frustum shape in the normal state, and the opening diameter decreases successively from top to bottom; When the shaft 1 is inserted, it is inserted from top to bottom. The large-diameter opening at the top of the frustum-shaped clamping sleeve 5 facilitates the alignment of the shaft 1. As the shaft 1 descends and its bottom contacts the inner wall of the clamping sleeve 5, it pushes the diameter of the lower part of the clamping sleeve 5 to expand and the diameter of the upper part to shrink until it fits the outer wall of the shaft 1, forming a clamping and wrapping of the shaft 1. At the same time, the bottom of the shaft 1 contacts the top end of the first center mechanism 201 located below the shaft 1; Specifically: The clamping mechanism 4 includes: a connecting frame 401. The top end of the connecting frame 401 is fixedly connected with a mounting frame 402. A clamping sleeve 5 is arranged inside the mounting frame 402. The clamping sleeve 5 is composed of a plurality of arc-shaped plates 501. A moving rod 502 is rotatably connected to the middle of the outer side of the arc-shaped plate 501. A cross bar 504 is fixedly installed on the moving rod 502. A tension spring 505 and a thrust spring 506 are respectively installed above and below the side wall of the cross bar 504. The outer side of the moving rod 502 is fixedly connected with the inner side of the mounting frame 402; The first center mechanism 201 includes: a first center block 2011. The bottom end of the first center block 2011 is fixedly connected with a circular disc 2012. The bottom of the circular disc 2012 is connected with a rotating mechanism 3; The rotating mechanism 3 includes a rotating shaft 304. The top end of the rotating shaft 304 is fixedly connected to the bottom of the circular disk 2012, and the bottom end of the rotating shaft 304 is rotatably connected to the support frame 6. An outer wall of the rotating shaft 304 is fixedly connected with a driven gear 303. A motor 301 is fixedly connected to a bottom side of the support frame 6, and an output end of the motor 301 is fixedly connected with a gear 302. The gear 302 meshes with the driven gear 303; Further: A second telescopic rod 805 is installed at the top end of the support frame 6. The top end of the second telescopic rod 805 is connected with an iron chip collecting cover 8. The middle part of the iron chip collecting cover 8 is sleeved outside the axle 1. When turning the axle 1, most of the iron chips fall into the collecting outer cover 801 for collection; Furthermore: In the above solution, some of the iron chips generated during turning may fall into the connection gap between the middle part of the iron chip collecting cover 8 and the axle 1. As the axle 1 rotates, the iron chips may damage the outer wall of the axle 1. If they fall through the gap into the clamping mechanism 4, it may cause jamming at the joints of the clamping mechanism 4, resulting in uncertain factors. Therefore, the iron chip collecting cover 8 is designed from the outside to the inside as a collecting outer cover 801, a collecting middle cover 802, and a collecting inner cover 803. The bottom of the collecting middle cover 802 is fixedly connected to the inner wall bottom of the collecting outer cover 801. The inner side of the collecting inner cover 803 is rotatably connected to the inner wall inner side of the collecting outer cover 801. A discharge through hole 804 is opened at the bottom of the collecting middle cover 802 for communicating with the inner wall of the collecting outer cover 801. The inner side of the top end of the collecting inner cover 803 is in contact with the outer wall of the split ring-shaped clamping plate 9, and the two are tightly connected by arranging convex blocks and concave grooves. When the split ring-shaped clamping plate 9 rotates, it can drive the collecting inner cover 803 to rotate; The split ring-shaped clamping plate 9 is composed of a plurality of arc-shaped clamping plates 901. The number of arc-shaped clamping plates 901 corresponds to the number of arc-shaped plates 501. A connecting rod 902 is fixedly connected to the top end of the arc-shaped plate 501. The top end of the connecting rod 902 is fixedly connected to the bottom end of the arc-shaped clamping plate 901; During use: When the axle 1 is inserted, the top opening of the conical clamping sleeve 5 shrinks and the bottom expands, changing into a cylindrical shape to clamp the axle 1. When the arc-shaped plates 501 of the clamping sleeve 5 converge, the arc-shaped clamping plates 901 are driven by the connecting rod 902 to closely fit on the outer wall of the axle 1; After the installation of the axle 1 is completed, control the second telescopic rod 805 to drive the entire iron chip collecting cover 8 to descend, and clamp the collecting inner cover 803 on the outer wall of the split ring-shaped clamping plate 9. When turning the axle 1, most of the iron chips fall into the collecting outer cover 801, and some may fall into the top surface of the collecting inner cover 803 inside the collecting middle cover 802 through the top opening of the collecting middle cover 802. As the collecting inner cover 803 rotates, the iron chips on its top surface will be thrown out through the discharge through hole 804 into the collecting outer cover 801.

[0021] Example 2: Refer to Figures 1 - 8 , which is basically the same as Example 1. However, in the above solution, after the axle 1 is clamped and fixed by the clamping mechanism 4, the upper second center mechanism 202 is connected to the top of the axle 1. At this time, there may be a certain angular offset in the axis of the axle 1. The upper second center mechanism 202 and the lower first center mechanism 201 clamp the axle 1. When driving the axle 1 to rotate and turn, there may be a certain deviation between the turning shape and the preset accuracy, especially for relatively slender shafts. To solve the above problems: vertical rollers 503 are arranged in an array on the inner sides of the arc-shaped plates 501. The arc curvature radius R of the rollers 503 satisfies: R = D / 2 + 0.1 - 0.3 mm with the diameter D of the axle 1; each roller 503 forms a rotating pair with the arc-shaped plate 501 through a pin shaft, reducing the vertical friction force between the axle 1 when inserted and the inner side of the arc-shaped plate 501. At the same time, when the axle 1 is clamped, the vertical axis offset that may exist in the axle 1 is adjusted by the rollers 503. When the second center mechanism 202 is connected to the top of the axle 1, it cooperates with the first center mechanism 201 at the bottom to calibrate the vertical axis of the axle 1.

[0022] Example 3: Refer to Figures 1 - 8 , which is basically the same as Example 1. The difference is that the moving rod 502 is not fixedly connected to the mounting bracket 402. A hole is opened in the mounting bracket 402 so that the moving rod 502 is slidably connected to the inner wall of the hole. Further, an adjusting mechanism 7 is provided on the outer side of the moving rod 502 for driving the moving rod 502 to move, thereby adjusting the position of the arc-shaped plate 501 and thus adjusting the diameter of the clamping sleeve 5; So that, in the initial state, the push rod extends to form a preset space with a diameter greater than the diameter of the axle 1 by 1 - 3 cm for the clamping sleeve 5. After the axle 1 is inserted, the adjusting mechanism 7 pushes the moving rod 502 according to a preset pressure curve to drive the arc-shaped plate 501 to contract and clamp; This can be combined with the calibration of the axis by the rollers 503; In the initial state, the push rod extends to form a preset space with a diameter greater than the diameter of the axle 1 by 1 - 3 cm for the clamping sleeve 5. After the bottom of the axle 1 is completely inserted, the bottom of the axle 1 is restricted by the clamping sleeve 5. At this time, the second center block 2021 of the second center mechanism 202 is inserted into the top of the axle 1. At this time, there is a certain gap between the clamping sleeve 5 and the outer wall of the bottom of the axle 1; no hard clamping is formed; since the axes of the first center block 2011 and the second center block 2021 are the same, the axle 1 clamped by the two is in a vertical state, calibrating the axis of the bottom of the axle 1; After calibration, control the adjusting mechanism 7 to push the arc-shaped plates 501 of the clamping sleeve 5 to fit with the axle 1 for hard clamping.

[0023] Specifically, the adjusting mechanism 7 includes a second thrust spring 704. The inner side of the second thrust spring 704 is fixedly connected to the outer side of the mounting bracket 402, and the outer side of the second thrust spring 704 is fixedly connected to the end of the moving rod 502 away from the arc-shaped plate 501. A second roller 703 is rotatably connected to the end of this part. An annular plate 701 is provided on the outer side of the second roller 703. A progressive arc-shaped groove 702 is formed on the inner side of the annular plate 701, and the progressive arc-shaped groove 702 is in rolling connection with the outer wall of the second roller 703. The adjusting mechanism 7 further includes a first telescopic rod 705. One end of the first telescopic rod 705 is rotatably connected to the outer wall of the mounting bracket 402, and the other end is rotatably connected to the annular plate 701. A protective frame 10 is arranged on the outer side of the annular plate 701, and the annular plate 701 is rotatably connected to the protective frame 10. The second center mechanism 202 includes a second center block 2021. A connecting shaft 2022 is fixedly connected to the top of the second center block 2021. A telescopic mechanism 2023 for driving the connecting shaft 2022 and the second center block 2021 to move up and down is connected to the top of the connecting shaft 2022. Embodiment 4: Substantially the same as Embodiment 2, the adjusting mechanism 7 includes a first telescopic rod 705. The first telescopic rod 705 is fixedly installed on the outer side of the mounting bracket 402, and the output end of the first telescopic rod 705 is fixedly connected to the outer end of the moving rod 502. So that, in the initial state, the push rod extends to form a preset space with a diameter 1-3 cm larger than the diameter of the axle 1. After the axle 1 is inserted, the first telescopic rod 705 pushes the moving rod 502 according to the preset pressure curve to drive the arc-shaped plate 501 to contract and clamp.

[0024] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can be made. These are all equivalent modifications and evolutions of the above embodiments based on the essential technology of the present invention, and all belong to the protection scope of the present invention.

Claims

1. An axle turning machine tool for automotive parts, comprising an axle (1), a center mechanism (2), a clamping mechanism (4), and a liftable chip collection cover (8), characterized in that, The clamping mechanism (4) includes a clamping sleeve (5) composed of a plurality of arc-shaped plates (501). A moving rod (502) is rotatably connected to the outer side of each arc-shaped plate (501). Tension springs (505) and thrust springs (506) are respectively arranged between the two ends of the cross bar (504) on the moving rod (502) and the arc-shaped plates (501), so that the clamping sleeve (5) presents a frustum shape with the top opening diameter larger than the bottom in the non-clamping state. The iron filings collection cover (8) includes a collection outer cover (801), a collection middle cover (802), and a collection inner cover (803) arranged in layers. The collection inner cover (803) is linked with the clamping sleeve (5) through a split ring-shaped clamping plate (9). The split ring-shaped clamping plate (9) is composed of a plurality of arc-shaped clamping plates (901) corresponding to the number of arc-shaped plates (501). Each arc-shaped clamping plate (901) is fixedly connected to the top end of the corresponding arc-shaped plate (501) through a connecting rod (902).

2. The shaft turning machine tool for automotive parts according to claim 1, characterized in that, When the axle (1) is inserted, the clamping sleeve (5) changes from a frustum shape to a cylindrical clamping state, and drives the split ring-shaped clamping plate (9) to closely fit the outer wall of the axle (1) through the connecting rod (902), and each arc-shaped clamping plate (901) remains in a closed state. The collection inner cover (803) rotates synchronously with the split ring-shaped clamping plate (9) during the turning process.

3. The turning machine tool for shaft-type automotive parts according to claim 2, characterized in that, The tension spring (505) is arranged between the upper end of the cross bar (504) and the top of the arc-shaped plate (501), and the thrust spring (506) is arranged between the lower end of the cross bar (504) and the bottom of the arc-shaped plate (501).

4. A turning machine for automotive part shafts according to claim 3, characterized in that, The inner side of the collection inner cover (803) is axially rotationally matched with the inner wall of the collection outer cover (801) through a bearing. There are respectively a clamping convex block and a clamping groove between the inner side of the collection inner cover (803) and the outer wall of the split ring-shaped clamping plate (9), and the two are vertically engaged with each other.

5. A shaft turning machine tool for automotive parts according to claim 4, characterized in that, The bottom of the collection middle cover (802) is fixedly connected to the bottom end of the inner wall of the collection outer cover (801). A discharge through hole (804) is opened at the bottom of the collection middle cover (802). The edge of the collection inner cover (803) is provided with a diversion inclined surface that slopes upward.

6. The turning machine tool for shaft-type automotive parts according to claim 5, characterized in that, The top opening of the collection middle cover (802) gradually decreases in diameter from bottom to top.

7. The turning machine tool for shaft-type automotive parts according to claim 6, characterized in that, An installation frame (402) is fixedly connected to the outer side of the moving rod (502), and a connecting frame (401) is fixedly connected to the bottom end of the installation frame (402).

8. An axle turning machine tool for automotive parts according to claim 7, characterized in that, The center point mechanism (2) includes a first center point mechanism (201) located below the axle (1) and a second center point mechanism (202) located above the axle (1) and capable of telescoping.

9. The turning machine tool for automotive part shafts according to claim 8, characterized in that, The first center point mechanism (201) includes a first center point block (2011) used for connecting with the bottom groove of the axle (1). A circular disc (2012) is fixedly connected to the bottom end of the first center point block (2011), and a rotating mechanism (3) is connected to the middle of the bottom end of the circular disc (2012).

10. A shaft turning machine tool for automotive parts according to claim 9, characterized in that, The rotation mechanism (3) includes a motor (301) and a rotating shaft (304). The motor (301) is fixedly installed inside the support frame (6). The output end of the motor (301) is fixedly connected to a gear (302). The top of the rotating shaft (304) is fixedly connected to the bottom of the circular disc (2012). The bottom of the rotating shaft (304) is rotatably connected to the bottom end of the inner wall of the support frame (6). A driven gear (303) is fixedly installed on the outer wall of the rotating shaft (304), and the driven gear (303) is meshed with the gear (302).

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