Feeding mechanism of centerless lathe and centerless lathe

Abstract

The utility model provides a feeding mechanism of a centerless lathe and the centerless lathe, the feeding mechanism is located on one side of the feeding direction of a cutting mechanism of the centerless lathe, and the feeding mechanism comprises a first frame body, a plurality of supporting roller sets and a plurality of first driving mechanisms. The multiple supporting roller sets are arranged on the first frame body at intervals in the first direction, and the multiple first driving mechanisms are connected with the multiple supporting roller sets correspondingly. The first driving mechanism drives the supporting roller set so as to drive the supporting roller set to move up and down relative to the first frame body. The structural form of the feeding mechanism is changed, the lifting function of the supporting roller set is achieved, and therefore conveying and feeding of the special-shaped workpieces with the large ends are achieved. And the type range of workpieces machined by the centerless lathe is widened. The centerless lathe has the advantages of being high in machining efficiency of the straight barrel bar, high in material utilization rate and low in production cost, the machining efficiency of the special-shaped workpiece is improved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of feeding mechanism design technology, specifically to a feeding mechanism for a centerless lathe and a centerless lathe. Background Technology

[0002] In the field of machining, centerless lathes, as a highly efficient machining equipment, are widely used for the outer diameter removal and precision turning of cylindrical bars due to their unique structural design and multi-tool collaborative operation. Traditional centerless lathes use multiple tools to feed synchronously along the axial and radial directions, which can quickly remove excess material from the surface of the bar stock, offering significant advantages such as high machining efficiency, high material utilization, and low production costs. However, the structural layout of the centerless lathe's loading mechanism is limited to loading workpieces with cylindrical structures and cannot accommodate irregularly shaped workpieces with large end structures (such as cylindrical sections with flanges, bosses, or large ends). Utility Model Content

[0003] In view of the problems existing in the prior art, the present invention provides a loading mechanism for a centerless lathe and a centerless lathe to improve the technical problem that the loading mechanism of the existing centerless lathe cannot be compatible with loading workpieces with irregular structures.

[0004] To solve the above-mentioned technical problems, this utility model provides a feeding mechanism for a centerless lathe. The feeding mechanism is located on one side of the feeding direction of the cutting mechanism of the centerless lathe. The feeding mechanism includes a first frame, multiple support roller groups, and multiple first drive mechanisms. The multiple support roller groups are spaced apart on the first frame along a first direction, and the multiple first drive mechanisms are respectively connected to the multiple support roller groups. The first drive mechanisms drive the support roller groups to cause them to move up and down relative to the first frame.

[0005] In one embodiment of the feeding mechanism of this utility model, the first driving mechanism is a first hydraulic cylinder, which is fixedly installed on the first frame. The movable end of the first hydraulic cylinder is fixedly connected to the support roller group to drive the support roller group to move up and down in the second direction.

[0006] In one embodiment of the feeding mechanism of this utility model, the support roller group includes a support frame and a roller, the support frame is slidably connected to the first frame, and the roller is rotatably mounted on the support frame.

[0007] In one embodiment of the feeding mechanism of this utility model, the support roller group further includes a second driving mechanism, which is mounted on the support frame and connected to the idler roller to drive the idler roller to rotate.

[0008] In one embodiment of the feeding mechanism of this utility model, the second driving mechanism is connected to the idler roller through a chain drive mechanism.

[0009] In one embodiment of the feeding mechanism of this utility model, the idler roller is a V-shaped roller.

[0010] In one embodiment of the feeding mechanism of this utility model, the feeding mechanism further includes a detector, and the detector is located on both sides of the support roller group along the first direction.

[0011] In one embodiment of the feeding mechanism of this utility model, the detector is an infrared ranging sensor.

[0012] In one embodiment of the feeding mechanism of this utility model, the feeding mechanism further includes a clamping mechanism, which includes a second frame, a first clamping roller group, and a second clamping roller group. The second frame is located between the first frame and the cutting mechanism. A plurality of first clamping roller groups are spaced apart on the second frame along a first direction, and a plurality of second clamping roller groups are spaced apart on the second frame along the first direction. The first and second clamping roller groups are arranged opposite to each other along a second direction. A plurality of third driving mechanisms are respectively connected to the plurality of first clamping roller groups and the plurality of second clamping roller groups to drive the first and second clamping roller groups to move up and down along the second direction.

[0013] The second aspect of this utility model provides a centerless lathe, the centerless lathe including the feeding mechanism described in any of the above claims.

[0014] This utility model provides a loading mechanism for a centerless lathe and a centerless lathe. It changes the structural form of the loading mechanism, replacing the original fixed conveyor roller structure formed by multiple support roller groups with a single drive mechanism that controls the lifting and lowering of the support roller groups, thereby enabling the loading and transport of irregularly shaped workpieces with large ends. This allows for the processing of straight cylindrical sections of irregularly shaped workpieces, broadening the range of workpiece types that the centerless lathe can process. Furthermore, it leverages the advantages of the centerless lathe—high processing efficiency, high material utilization, and low production cost for straight bar stock—to improve the processing efficiency of irregularly shaped workpieces and reduce production costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 embodiments can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front sectional view of the overall structure of the feeding mechanism of this utility model in one embodiment;

[0017] Figure 2 This is a front view of the feeding platform structure in one embodiment of the feeding mechanism of this utility model;

[0018] Figure 3 This is a front view of the clamping mechanism structure in one embodiment of the feeding mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the roller structure in one embodiment of the feeding mechanism of this utility model;

[0020] Figure 5 This is a schematic diagram of the loading state of an irregularly shaped workpiece in one embodiment of the centerless lathe of this utility model. Figure 1 ;

[0021] Figure 6 This is a schematic diagram of the loading state of an irregularly shaped workpiece in one embodiment of the centerless lathe of this utility model. Figure 2 .

[0022] Component designation explanation:

[0023] 100. Loading platform; 110. First frame; 120. Support roller group; 121. Support frame; 122. Idler roller; 123. Second drive mechanism; 124. Chain drive mechanism; 1241. Drive sprocket; 1242. Driven sprocket; 1243. Drive chain; 130. First drive mechanism; 131. First hydraulic cylinder; 140. Detector; 200. Clamping mechanism; 210. Second frame; 220. First clamping roller group; 230. Second clamping roller group; 240. Third drive mechanism; 241. Second hydraulic cylinder; 300. Cutting mechanism; 400. Bed; 500. Extraction mechanism; 600. Discharge mechanism; 700. Unloading mechanism. Detailed Implementation

[0024] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0025] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise specified in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, equipment, and materials similar to or equivalent to those in the embodiments of this invention.

[0026] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0027] To address the technical problem that existing centerless lathes' loading mechanisms cannot handle workpieces with irregular shapes, this invention provides a loading mechanism and a centerless lathe. By improving the structure of the loading mechanism, the centerless lathe can process straight sections of irregularly shaped workpieces with large ends, reducing production costs and improving processing efficiency.

[0028] Please see Figures 1 to 6 The first aspect of this utility model provides a feeding mechanism for a centerless lathe. This feeding mechanism is used for feeding materials onto the centerless lathe and is located on one side of the cutting mechanism 300 of the centerless lathe in the feeding direction. The feeding mechanism includes a feeding table 100, which includes a first frame 110, multiple support roller groups 120, and multiple first drive mechanisms 130. The feeding table 100 can be part of the bed 400 of the centerless lathe or independent of the bed 400 on one side in the feeding direction. Specifically, in this embodiment, the feeding table 100 and the bed 400 are separate structures, and the feeding table 100 is installed on the ground.

[0029] Please see Figure 1 and Figure 2Multiple support roller groups 120 are spaced apart on the first frame 110 along a first direction, denoted as the workpiece feeding direction, i.e., the X-axis. The number and spacing of the support roller groups 120 are not limited, as long as they can support the workpiece and ensure feeding stability. The source of power for the displacement of the workpiece on the support roller groups 120 is not limited; it can be manually or with the aid of an external thrust device to push the workpiece onto the cutting mechanism 300, or it can be fed through the self-transport function of the support roller groups 120, but this is not a limitation. Multiple first drive mechanisms 130 are respectively connected to multiple support roller groups 120, denoted as the second direction, i.e., the Y-axis, or vertical direction. Each first drive mechanism 130 independently drives its corresponding support roller group 120 to move the support roller group 120 up and down relative to the first frame 110 along the second direction. The number of first drive mechanisms 130 is matched with the number of support roller groups 120. The first drive mechanism 130 can be any suitable type of structure that can realize the lifting and lowering movement of the support roller group 120 in the second direction, such as a ball screw mechanism, a gear and rack mechanism, a hydraulic cylinder, or a pneumatic cylinder. The first drive mechanism 130 can be installed on the ground or fixed to the first frame 110.

[0030] By modifying the structure of the loading platform 100, the support roller group 120 is driven by the first drive mechanism 130 to achieve vertical movement relative to the first frame 110. When a non-standard workpiece with a large end is fed or unloaded, the corresponding support roller group 120 that interferes with the workpiece descends to avoid the large end, thus realizing the feeding or unloading of non-standard workpieces with large ends. The cutting mechanism 300 of the centerless lathe then processes the straight section of the non-standard workpiece, expanding the range of workpiece types that the centerless lathe can process. Furthermore, it improves the processing efficiency of the straight section of the non-standard workpiece and reduces production costs.

[0031] Please see Figure 3 In one embodiment of the feeding mechanism of this utility model, the first driving mechanism 130 is a first hydraulic cylinder 131, and the cylinder body of the first hydraulic cylinder 131 is fixedly installed on the first frame 110. The movable end of the first hydraulic cylinder 131, that is, the piston rod of the first hydraulic cylinder 131, is fixedly connected to the support roller group 120. When the piston rod of the first hydraulic cylinder 131 extends or retracts, it drives the support roller group 120 to slide relative to the first frame 110, thereby realizing the lifting and lowering movement of the support roller group 120 along the second direction to avoid the large end part of the irregular workpiece.

[0032] Please see Figure 2In one embodiment of the feeding mechanism of this utility model, the support roller group 120 includes a support frame 121 and a support roller 122. The support frame 121 serves as a mounting frame for the support roller 122 and is slidably mounted on the first frame 110. The structure of the support frame 121 is not limited; for example, it can be an H-shaped frame or a U-shaped frame, but it is not limited thereto. The support frame 121 is fixedly connected to the piston rod end of the first hydraulic cylinder 131, and the support roller 122 is rotatably mounted on the support frame 121, supporting the workpiece to be fed.

[0033] Please see Figure 2 In one embodiment of the feeding mechanism of this utility model, the support roller group 120 further includes a second drive mechanism 123. The second drive mechanism 123 serves as a power component for realizing the rotational movement of the idler roller 122. The second drive mechanism 123 is fixedly installed on the support frame 121. When the support frame 121 moves up and down, the second drive mechanism 123 moves up and down with the support frame 121. The output end of the second drive mechanism 123 is connected to the idler roller 122 to drive the idler roller 122 to rotate. By driving the idler roller 122 to rotate, the functions of feeding and discharging workpieces on the idler roller 122 are realized. The second drive mechanism 123 can be connected to the idler roller 122 through a chain drive mechanism 124, a belt drive mechanism, a gear drive mechanism, a gear and rack drive mechanism, or a motor reducer drive mechanism to drive the idler roller 122 to rotate, but is not limited to these.

[0034] Specifically, in this embodiment, the second drive mechanism 123 is connected to the idler roller 122 via a chain drive mechanism 124. The second drive mechanism 123 is a drive motor, and the chain drive mechanism 124 includes a drive sprocket 1241, a driven sprocket 1242, and a drive chain 1243. The drive sprocket 1241 is installed at the output end of the drive motor, and the driven sprocket 1242 is fixedly installed at one end of the idler roller 122. The drive chain 1243 connects the drive sprocket 1241 and the driven sprocket 1242, thereby realizing the rotational movement of the idler roller 122.

[0035] Please see Figure 4 In one embodiment of the feeding mechanism of this utility model, the support roller 122 is a V-shaped roller. The special design of the V-shaped roller can effectively prevent the workpiece from deviating from the central axis during processing. Due to its V-shaped structure, the workpiece is stably supported in the V-groove, reducing displacement caused by vibration or cutting force, ensuring the processing stability of the centerless lathe, and reducing processing errors caused by workpiece offset.

[0036] Please see Figure 2In one embodiment of the feeding mechanism of this utility model, the feeding mechanism further includes detectors 140, which are located on both sides of the support roller group 120 along the first direction. The number of detectors 140 is not limited, as long as the detection requirements are met. The installation position of the detectors 140 is not limited; for example, the detectors 140 can be installed on the support frame 121 of the support roller group 120, or on the first frame 110, as long as they can promptly detect whether the large end of the workpiece is approaching or moving away, transmit a signal to the control system of the centerless lathe, and then control the corresponding position of the support roller group 120 to move up and down to avoid the large end of the workpiece. The detectors 140 can be limit switches or distance sensors, but are not limited to these. Specifically, in this embodiment, the detector 140 employs an infrared ranging sensor. Multiple infrared ranging sensors are fixedly mounted on the first frame 110 and located on both sides of a single support roller group 120. The workpiece is located on the detection path of the infrared ranging sensor. By measuring and recording the change in the distance between the detector 140 and the outer surface of the workpiece, it is determined whether the large end of the workpiece is close, thereby controlling the lifting and lowering action of the corresponding support roller group 120. It should be noted that infrared ranging sensors or limit switches have wide applications in the industry, their structure and working principle are well known in the industry, and they can be obtained through general commercial means, so they will not be described in detail here.

[0037] Please see Figure 3In one embodiment of the feeding mechanism of this utility model, the feeding mechanism further includes a clamping mechanism 200, which is located between the cutting mechanism 300 and the feeding table 100. The feeding table 100 realizes the feeding and conveying functions of the centerless lathe on the workpiece. The clamping mechanism 200 is installed on the bed 400 to realize the clamping and conveying functions of the centerless lathe on the workpiece, ensuring the stability of the workpiece when the cutting mechanism 300 is cutting. Specifically, the clamping mechanism 200 includes a second frame 210, a first clamping roller group 220, and a second clamping roller group 230. The second frame 210 is located between the first frame 110 and the cutting mechanism 300. Specifically, the second frame 210 is fixed on the bed 400 and close to the feed port of the cutting mechanism 300. The second frame 210 can be a portal frame structure or a plate structure with an opening. The size of the opening is sufficient for the large end of the workpiece to pass through. Multiple first clamping roller groups 220 and multiple second clamping roller groups 230 are spaced apart on the second frame 210 along a first direction. The first clamping roller groups 220 and second clamping roller groups 230 have identical structures and are positioned opposite each other along a second direction. The distance between the first clamping roller groups 220 and second clamping roller groups 230 forms the passage for the workpiece. Multiple third drive mechanisms 240 are positioned at corresponding locations on the second frame 210. These third drive mechanisms 240 are respectively connected to the multiple first clamping roller groups 220 and the multiple second clamping roller groups 230 to drive the first clamping roller groups 220 and the second clamping roller groups 230 to move up and down along the second direction. Specifically, in this embodiment, the third drive mechanism 240 is the second hydraulic cylinder 241, the number of first clamping roller groups 220 is three, the number of second clamping roller groups 230 is three, and the number of second hydraulic cylinders 241 is six, corresponding to the number of first clamping roller groups 220 and second clamping roller groups 230. By increasing the travel of multiple sets of first clamping roller groups 220 and multiple sets of second clamping roller groups 230, and through the application of the third drive mechanism 240, the spacing between the first clamping roller groups 220 and the second clamping roller groups 230 can be adjusted, facilitating the passage of the large end of the workpiece and allowing the straight cylindrical section of the workpiece to penetrate as deeply as possible into the cutting mechanism 300, minimizing the length of the unpeeled portion of the straight cylindrical section of the workpiece. Simultaneously, the arrangement of multiple first clamping roller groups 220 and second clamping roller groups 230 ensures a good clamping effect on the workpiece. It should be noted that this embodiment only improves the number of the first clamping roller group 220 and the second clamping roller group 230, and the displacement movement of the first clamping roller group 220 and the second clamping roller group 230 in the second direction through the third drive mechanism 240. The specific structure and installation method of the first clamping roller group 220 and the second clamping roller group 230 can refer to the design of the existing centerless lathe clamping mechanism 200, and are not improvements of the technical solution of this embodiment, so they will not be described in detail here.

[0038] Please see Figure 5 and Figure 6 The second aspect of this utility model provides a centerless lathe, which includes the feeding mechanism described in any of the above embodiments. It should be noted that the centerless lathe of this utility model also includes conventional components of existing centerless lathes such as a cutting mechanism 300, a bed 400, an extraction mechanism 500, a discharge mechanism 600, and a unloading mechanism 700. Their structures and functions are well known in the industry and will not be described in detail here.

[0039] In this utility model, the loading mechanism of the centerless lathe and the centerless lathe itself are modified. The original fixed conveyor roller structure formed by multiple support roller groups is transformed into a single drive mechanism that controls the lifting function of the support roller groups, thereby enabling the loading and transport of irregularly shaped workpieces with large ends. This allows for the processing of straight cylindrical sections of irregularly shaped workpieces, broadening the range of workpiece types that the centerless lathe can process. Furthermore, leveraging the advantages of the centerless lathe—high processing efficiency, high material utilization, and low production cost for straight bar stock—this invention improves the processing efficiency of irregularly shaped workpieces and reduces production costs. It also addresses the technical problem that existing centerless lathe loading mechanisms cannot handle workpieces with irregular structures. Therefore, this utility model effectively overcomes some practical problems in the prior art, thus possessing high utilization value and practical significance.

[0040] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A feeding mechanism for a centerless lathe, the feeding mechanism being located on one side of the cutting mechanism of the centerless lathe in the feeding direction, characterized in that, The feeding mechanism includes: First frame; Multiple support roller groups are spaced apart on the first frame along a first direction; Multiple first drive mechanisms are respectively connected to multiple support roller groups; The first driving mechanism drives the support roller group to move the support roller group up and down relative to the first frame.

2. The feeding mechanism according to claim 1, characterized in that, The first driving mechanism is a first hydraulic cylinder, which is fixedly installed on the first frame. The movable end of the first hydraulic cylinder is fixedly connected to the support roller group to drive the support roller group to move up and down in the second direction.

3. The feeding mechanism according to claim 2, characterized in that, The support roller assembly includes a support frame and a roller, the support frame being slidably connected to the first frame, and the roller being rotatably mounted on the support frame.

4. The feeding mechanism according to claim 3, characterized in that, The support roller assembly further includes a second drive mechanism, which is mounted on the support frame and connected to the idler roller to drive the idler roller to rotate.

5. The feeding mechanism according to claim 4, characterized in that, The second drive mechanism is connected to the idler roller via a chain drive mechanism.

6. The feeding mechanism according to claim 3, characterized in that, The idler roller is a V-shaped roller.

7. The feeding mechanism according to claim 1, characterized in that, The feeding mechanism also includes detectors, which are located on both sides of the support roller group along the first direction.

8. The feeding mechanism according to claim 7, characterized in that, The detector is an infrared ranging sensor.

9. The feeding mechanism according to claim 1, characterized in that, The feeding mechanism further includes a clamping mechanism, which includes: The second frame is located between the first frame and the cutting mechanism; Multiple first clamping roller groups are spaced apart on the second frame along a first direction; Multiple second clamping roller groups are spaced apart on the second frame along a first direction, and the first clamping roller group and the second clamping roller group are arranged opposite to each other along a second direction. The third drive mechanism, wherein multiple third drive mechanisms are respectively connected to multiple first clamping roller groups and multiple second clamping roller groups, so as to drive the first clamping roller groups and the second clamping roller groups to move up and down along the second direction.

10. A centerless lathe, characterized in that, Includes the feeding mechanism as described in any one of claims 1 to 9.

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