Bar processing positioning mechanism

Abstract

A kind of bar processing positioning mechanism, the bar positioning technical field, for the positioning of bar, still include: positioning table, positioning component and drive component, bar is positioned on positioning table;Positioning component is provided with four groups, and every two groups of positioning component is symmetrically arranged left and right, for the positioning of bar end;Drive component can drive positioning component to rotate close to or away from bar side wall.The utility model is positioned by two ends synchronous positioning mode, constrain bar space degree of freedom, inhibit overhanging end swing vibration, improve processing stability;Discard step positioning process, avoid multiple clamping cumulative error, improve positioning accuracy and processing efficiency, guarantee the efficient operation of automated production;Adopt two free ends four point position synchronous positioning, accurately limit axial runout and radial runout, improve positioning reference consistency and stability, avoid subsequent processing precision loss.

Description

Technical Field

[0001] This utility model belongs to the field of bar stock positioning technology, specifically relating to a bar stock processing positioning mechanism. Background Technology

[0002] In bar stock machining, precise positioning is crucial for ensuring machining accuracy and quality. Positioning aims to restrict the bar stock's degrees of freedom, keeping it stable during cutting, grinding, and other machining processes, and preventing dimensional deviations or surface defects caused by displacement or vibration.

[0003] A related technology (Chinese Patent No. CN222244531U) discloses an end positioning component for bar stock processing, including a mounting plate. The mounting plate has a positioning mechanism inside and a mounting mechanism at its bottom. A base is fixedly connected to the top of the mounting plate. The positioning mechanism includes an adjustment component and a positioning component. The adjustment component is located inside the mounting plate, and the positioning component is located inside the adjustment component. The adjustment component includes a guide post, which is fixedly connected inside the mounting plate. A motor frame is fixedly connected to the bottom of the mounting plate. In use, this end positioning component for bar stock processing uses the guide post to push a guide rod through a guide groove, causing the guide rod to rotate the pressure plate. This automatically positions the pressure plate to a suitable position during use, and when not in use, the pressure plate can be rotated to one side without affecting the loading and unloading of bar stock, making it more convenient to use.

[0004] However, the above-mentioned methods and the current mainstream bar positioning mechanisms mostly adopt the single-end constraint mode. This positioning method has significant drawbacks: First, single-end positioning cannot effectively suppress the spatial degree of freedom of the other end of the bar, which makes it easy for the overhanging end to swing and vibrate during the processing; Second, the step-by-step two-end positioning operation process is cumbersome, and the cumulative error introduced by multiple clamping significantly reduces the positioning accuracy. Utility Model Content

[0005] To address the problem that existing single-end positioning techniques cannot effectively suppress the spatial degree of freedom at the other end of the bar stock, leading to swaying and vibration of the overhanging end during processing, this invention provides a bar stock processing positioning mechanism. This mechanism employs a two-end synchronous positioning method, using a precision linkage mechanism to simultaneously clamp and limit the two ends of the bar stock, effectively constraining its spatial degree of freedom, significantly suppressing swaying and vibration of the overhanging end during processing, and improving processing stability. The specific technical solution is as follows: A bar stock processing positioning mechanism for positioning bar stock, further comprising: a positioning table, positioning components, and a driving component, wherein the bar stock is positioned on the positioning table; four sets of positioning components are provided, and every two sets of positioning components are symmetrically arranged left and right, for positioning the end of the bar stock; the driving component can drive the positioning components to rotate to move closer to or away from the side wall of the bar stock. Each positioning component includes a support arm, a mounting base, and a swing arm. One end of the support arm is vertically and fixedly mounted on the positioning platform; the mounting base is fixedly mounted on the other end of the support arm; and the swing arm is rotatably connected to the inner cavity of the mounting base.

[0006] In the above technical solution, the support arm is configured as an L-shape.

[0007] In the above technical solution, each group of positioning components further includes: a connecting rod and a positioning block, wherein the connecting rod is vertically installed at the free end of the top of the swing arm; and the positioning block is fixedly installed at the end of the connecting rod.

[0008] In the above technical solution, the driving component includes: a slide groove, a driving pin, and a driving frame. The slide groove is opened at the bottom free end of the swing arm; the driving pin is slidably embedded in the inner cavity of the slide groove; the driving frame has a through cavity, and the driving pin is slidably embedded in the inner cavity of the driving frame.

[0009] In the above technical solution, the drive assembly further includes: a U-shaped frame, a connecting plate, and a cylinder. The U-shaped frame is fixedly installed at the bottom end of the drive frame; the connecting plate is fixedly installed on the side wall of the U-shaped frame along the front-back direction; the cylinder is installed on the lower surface of the positioning platform, and the output end of the cylinder is fixedly connected to the connecting plate.

[0010] In the above technical solution, the bottom end of the positioning platform is vertically and fixedly installed with a limiting post, and the connecting plate is slidably sleeved on the limiting post.

[0011] The above technical solution also includes a support assembly, which is provided in multiple sets. Each pair of support assemblies is symmetrically arranged on the positioning platform. Each set of support assemblies includes: a mounting block, a positioning seat, a first rotating shaft, a second rotating shaft, a first limiting wheel, and a second limiting wheel. The mounting block is fixedly mounted on the positioning platform. The positioning seat is triangular and fixedly connected to the mounting block. The first rotating shaft and the second rotating shaft are respectively rotatably connected to the two free ends of the positioning seat. The first limiting wheel is fixedly mounted on the first rotating shaft, and the second limiting wheel is fixedly mounted on the second rotating shaft.

[0012] In the above technical solution, the first limiting wheel and the second limiting wheel are respectively in close contact with the side wall of the bar stock.

[0013] In the above technical solution, the front and rear side walls of the positioning platform are respectively provided with clearance grooves.

[0014] In the above technical solution, the U-shaped frame moves up and down along the inner cavity of the relief groove.

[0015] The bar stock processing positioning mechanism of this utility model has the following advantages compared with the prior art: I. In view of the problem that existing single-end positioning cannot effectively suppress the spatial degree of freedom of the other end of the bar stock, which leads to the easy swinging and vibration of the overhanging end during the processing, this utility model breaks through the limitations of traditional single-end constraint positioning and adopts a two-end synchronous positioning method. Through a precision linkage mechanism, the two ends of the bar stock are clamped and limited synchronously, which effectively constrains the spatial degree of freedom of the bar stock, significantly suppresses the swinging and vibration of the overhanging end during the processing, and improves the processing stability. II. In view of the problem that the step-by-step positioning process is cumbersome and the cumulative error introduced by multiple clamping significantly reduces the positioning accuracy, this utility model abandons the cumbersome step-by-step positioning process, avoids the cumulative error caused by multiple clamping, and greatly improves the positioning accuracy. In addition, the synchronous positioning at both ends reduces the clamping time, significantly improves the processing efficiency, and provides a reliable guarantee for the efficient operation of automated production lines. Third, based on the synchronous positioning of both ends of the bar stock, this utility model can simultaneously perform four-point synchronous positioning of the two free ends of the bar stock, accurately restricting the axial movement and radial runout of the bar stock, eliminating the cumulative error caused by successive clamping in traditional step-by-step positioning; by synchronously applying positioning force, it ensures that the bar stock maintains a unique and definite position in the machining coordinate system, significantly improving the consistency and stability of the positioning reference, fundamentally avoiding the loss of subsequent machining accuracy caused by positioning errors, and providing a reliable positioning reference guarantee for precision machining; IV. This utility model is equipped with a four-point synchronous release mechanism, which realizes the synchronous unlocking of the four positioning points of the bar stock through an integrated drive system. Compared with the traditional point-by-point disassembly method, this solution uses a linkage method to enable each positioning component to be released from constraint simultaneously under the same operation command, which significantly shortens the disassembly time, reduces the operation complexity, effectively avoids the risk of uneven force and component damage caused by step disassembly, greatly improves the bar stock loading and unloading efficiency, and meets the needs of automated production lines for efficient and reliable clamping. In summary, this invention constrains the spatial degrees of freedom of the bar stock through synchronous positioning at both ends, suppresses the swaying vibration of the overhanging end, and improves processing stability; it eliminates the step-by-step positioning process, avoids the accumulation of errors from multiple clamping operations, improves positioning accuracy and processing efficiency, and ensures efficient operation of automated production; it adopts synchronous positioning at four points on both free ends to accurately limit axial movement and radial runout, improves the consistency and stability of the positioning reference, and avoids loss of subsequent processing accuracy; it sets up a four-point synchronous release function, which synchronously unlocks the positioning points through integrated drive, shortens disassembly time, reduces operational complexity, avoids uneven force and component damage, improves loading and unloading efficiency, and meets the needs of automated production lines for efficient and reliable clamping. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the positioning platform of this utility model; Figure 2 This is a schematic diagram of the structure of the swing arm of this utility model; Figure 3 This is the front view of the U-shaped frame of this utility model; Figure 4 This is a side view of the connecting plate of this utility model; Figures 1 to 4 In the middle, 1. bar stock, 2. positioning table, 3. clearance groove, 4. support arm, 5. mounting base, 6. swing arm, 7. connecting rod, 8. positioning block, 9. slide groove, 10. drive pin, 11. drive frame, 12. U-shaped frame, 13. connecting plate, 14. cylinder, 15. limit post, 16. mounting block, 17. positioning base, 18. first rotating shaft, 19. first limit wheel, 20. second rotating shaft, 21. second limit wheel. Detailed Implementation

[0017] The following are specific implementation cases and appendices. Figures 1 to 4 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0018] A bar stock processing positioning mechanism for positioning bar stock 1, further comprising: a positioning table 2, positioning components and a driving component, wherein the bar stock 1 is positioned on the positioning table 2; four sets of positioning components are provided, and every two sets of positioning components are symmetrically arranged on the left and right, for positioning the end of the bar stock 1; the driving component can drive the positioning components to rotate to approach or move away from the side wall of the bar stock 1. Each positioning assembly includes: a support arm 4, a mounting base 5, and a swing arm 6. One end of the support arm 4 is vertically and fixedly mounted on the positioning table 2; the mounting base 5 is fixedly mounted on the other end of the support arm 4; the swing arm 6 is rotatably connected to the inner cavity of the mounting base 5 via a bearing. By having the four positioning assemblies simultaneously approach the side wall of the bar stock 1, the bar stock 1 is positioned on the positioning table 2. Each positioning assembly also includes: a connecting rod 7 and a positioning block 8. The connecting rod 7 is vertically mounted at the free end of the top of the swing arm 6; the positioning block 8 is fixedly mounted at the end of the connecting rod 7. Specifically, the support arm 4 is L-shaped, which not only enables the connection between the mounting base 5 and the support arm 4, but also provides sufficient rotation space for the swing arm 6 to rotate at the mounting base 5.

[0019] This invention breaks through the limitations of traditional single-end constraint positioning and adopts a two-end synchronous positioning method. Through a precision linkage mechanism, the two ends of the bar are clamped and limited synchronously, which effectively constrains the spatial degree of freedom of the bar 1, significantly suppresses the swing and vibration of the overhanging end during processing, and improves processing stability.

[0020] This invention, based on the synchronous positioning of both ends of the bar stock 1, can simultaneously perform four-point synchronous positioning of the two free ends of the bar stock 1, accurately limiting the axial movement and radial runout of the bar stock 1, eliminating the cumulative error caused by successive clamping in traditional step-by-step positioning; by synchronously applying positioning force, it ensures that the bar stock 1 maintains a unique and definite position in the machining coordinate system, significantly improving the consistency and stability of the positioning reference, fundamentally avoiding the loss of subsequent machining accuracy caused by positioning errors, and providing a reliable positioning reference guarantee for precision machining.

[0021] The drive assembly includes: a slide groove 9, a drive pin 10, and a drive frame 11. The slide groove 9 is located at the bottom free end of the swing arm 6. The drive pin 10 is slidably embedded in the inner cavity of the slide groove 9. The drive frame 11 has a through cavity, and the drive pin 10 is slidably embedded in the inner cavity of the drive frame 11. The drive assembly also includes: a U-shaped frame 12, a connecting plate 13, and a cylinder 14. The U-shaped frame 12 is fixedly installed at the bottom end of the drive frame 11. The connecting plate 13 is fixedly installed on the side wall of the U-shaped frame 12 along the front-back direction. The cylinder 14 is installed on the lower surface of the positioning table 2, and the output end of the cylinder 14 is fixedly connected to the connecting plate 13. This utility model eliminates the cumbersome process of step-by-step positioning, avoids the cumulative error caused by multiple clamping, and greatly improves the positioning accuracy. In addition, the synchronous positioning at both ends reduces the clamping time, significantly improves the processing efficiency, and provides a reliable guarantee for the efficient operation of the automated production line. In addition, this utility model is equipped with a four-point synchronous release mechanism, which realizes the synchronous unlocking of the four positioning points of the bar stock 1 through an integrated drive system. Compared with the traditional point-by-point disassembly method, this solution uses a linkage method to enable each positioning component to be released from constraint simultaneously under the same operation command, which significantly shortens the disassembly time, reduces the operation complexity, effectively avoids the risk of uneven force and component damage caused by step disassembly, greatly improves the bar stock loading and unloading efficiency, and meets the needs of automated production lines for efficient and reliable clamping.

[0022] When the connecting plate 13 moves vertically, in order to ensure the verticality of its movement, the bottom of the positioning platform 2 is vertically and fixedly installed with a limit post 15, and the connecting plate 13 is slidably sleeved on the limit post 15, thereby guiding the vertical displacement of the connecting plate 13 with the help of the limit post 15.

[0023] This solution also includes support components, which are provided in multiple sets. Each pair of support components is symmetrically arranged on the positioning platform 2. Each support component includes: a mounting block 16, a positioning seat 17, a first rotating shaft 18, a second rotating shaft 20, a first limiting wheel 19, and a second limiting wheel 21. The mounting block 16 is fixedly mounted on the positioning platform 2. The positioning seat 17 is triangular and is fixedly connected to the mounting block 16. The first rotating shaft 18 and the second rotating shaft 20 are respectively rotatably connected to the two free ends of the positioning seat 17. The first limiting wheel 19 is fixedly mounted on the first rotating shaft 18, and the second limiting wheel 21 is fixedly mounted on the second rotating shaft 20.

[0024] The first limiting wheel 19 and the second limiting wheel 21 are tightly fitted to the side wall of the bar stock 1. During positioning, the bar stock 1 is placed in the space limited by multiple sets of first limiting wheels 19 and second limiting wheels 21 to achieve initial support. In addition, the front and rear side walls of the positioning platform 2 are respectively provided with clearance grooves 3. The U-shaped frame 12 moves up and down along the inner cavity of the clearance groove 3. That is, the clearance groove 3 provides sufficient space for the up and down movement of the U-shaped frame 12 and other components, and avoids the positioning platform 2 from affecting the up and down displacement of the U-shaped frame 12, drive frame 11 and other components.

[0025] It is worth noting that the cylinder 14 used in this application is a commonly used self-locking cylinder on the market. Its output end can stop at any position and lock. The model of this existing component is not limited here, nor is it described in detail. The positioning block 8 can be made of a commonly used elastic material with a certain degree of hardness on the market to ensure that the positioning block 8 can fit tightly against the arc of the outer wall of the bar stock 1 to achieve positioning of the bar stock 1. The positioning block 8 only needs to meet the requirement of tight and stable positioning of the outer wall of the bar stock 1. The model of the above-mentioned existing component is not limited here, nor is it described in detail.

[0026] The working principle of the bar stock processing positioning mechanism in this embodiment is as follows: During positioning, the bar stock 1 is placed in the space limited by multiple sets of first limit wheels 19 and second limit wheels 21 to achieve initial support; the start cylinder 14 drives the connecting plate 13 to drive the U-shaped frame 12 at both ends to move upward synchronously. The upward U-shaped frame 12 causes the corresponding drive frame 11 to drive the drive pin 10 to move upward synchronously. The drive pin 10 moves along the slide groove 9 and the inner cavity of the drive frame 11, causing the connecting rod 7 and the positioning block 8 at the top of the swing arm 6 to swing towards the bar stock until the positioning block 8 is tightly attached to the side wall of the bar stock, thereby achieving synchronous positioning of four points at both ends of the bar stock. Conversely, when disassembling the positioned bar 1, refer to the above steps in reverse and use the downward connecting plate 13, U-shaped frame 12, drive frame 11, and drive pin 10 to cause the connecting rod 7 and positioning block 8 at the top of the swing arm 6 to disengage from the positioning of the outer wall of the bar 1, thereby achieving simultaneous disassembly of the bar 1 at four points. This invention constrains the spatial degrees of freedom of the bar stock through synchronous positioning at both ends, suppresses the swaying vibration of the overhanging end, and improves processing stability. It eliminates the step-by-step positioning process, avoiding the accumulation of errors from multiple clamping operations, improving positioning accuracy and processing efficiency, and ensuring efficient operation of automated production. The use of four-point synchronous positioning at two free ends precisely limits axial movement and radial runout, improving the consistency and stability of the positioning reference and avoiding subsequent processing accuracy loss. A four-point synchronous release function is set up, which synchronously unlocks the positioning points through integrated drive, shortening disassembly time, reducing operational complexity, avoiding uneven force and component damage, improving loading and unloading efficiency, and meeting the needs of automated production lines for efficient and reliable clamping.

[0027] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0028] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0029] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0030] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0031] Unless otherwise stated, the term "multiple" means two or more.

[0032] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0033] The term "and / or" describes the relationship between objects, indicating that there can be three relationships. For example, A and / or B means: A or B, or A and B.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bar stock processing positioning mechanism for positioning a bar stock (1), characterized in that: Also includes: Positioning table (2), on which the bar stock (1) is positioned; The positioning components are provided in four sets, and each pair of positioning components are symmetrically arranged on the left and right sides, for positioning the end of the bar stock (1); A driving component that can drive the positioning component to rotate toward or away from the side wall of the bar (1); Each group of positioning components includes: Support arm (4), one end of which is vertically and fixedly installed on the positioning platform (2); Mounting base (5), which is fixedly mounted on the other end of the support arm (4); A swing arm (6) is rotatably connected to the inner cavity of the mounting base (5).

2. The bar stock processing positioning mechanism according to claim 1, characterized in that: The support arm (4) is configured as an L-shape.

3. The bar stock processing positioning mechanism according to claim 1, characterized in that: Each set of positioning components also includes: Connecting rod (7), which is vertically installed at the top free end of the swing arm (6); Positioning block (8) is fixedly installed at the end of the connecting rod (7).

4. The bar stock processing positioning mechanism according to claim 3, characterized in that: The driving component includes: The groove (9) is provided at the bottom free end of the swing arm (6); Drive pin (10), which is slidably embedded in the inner cavity of the groove (9); The drive frame (11) has a through cavity, and the drive pin (10) is slidably embedded in the cavity of the drive frame (11).

5. The bar stock processing positioning mechanism according to claim 4, characterized in that: The driving component also includes: U-shaped frame (12), the U-shaped frame (12) is fixedly installed at the bottom end of the drive frame (11); A connecting plate (13) is fixedly installed on the side wall of the U-shaped frame (12) in the front-back direction; Cylinder (14), the cylinder (14) is installed on the lower surface of the positioning platform (2), and the output end of the cylinder (14) is fixedly connected to the connecting plate (13).

6. The bar stock processing positioning mechanism according to claim 5, characterized in that: The bottom of the positioning platform (2) is vertically and fixedly installed with a limiting post (15), and the connecting plate (13) is slidably sleeved on the limiting post (15).

7. The bar stock processing positioning mechanism according to claim 1, characterized in that: It also includes support components, of which multiple sets are provided, with each pair of support components symmetrically arranged on the positioning platform (2). Each set of support components includes: Mounting block (16), which is fixedly mounted on the positioning platform (2); Positioning seat (17), the positioning seat (17) is set in a triangle, and the positioning seat (17) is fixedly connected to the mounting block (16); A first rotating shaft (18) and a second rotating shaft (20) are respectively rotatably connected to the two free ends of the positioning seat (17); The first limiting wheel (19) and the second limiting wheel (21) are fixedly installed on the first rotating shaft (18) and the second limiting wheel (21) is fixedly installed on the second rotating shaft (20).

8. The bar stock processing positioning mechanism according to claim 7, characterized in that: The first limiting wheel (19) and the second limiting wheel (21) are respectively in close contact with the side wall of the bar stock (1).

9. A bar stock processing positioning mechanism according to claim 5, characterized in that: The positioning platform (2) has clearance grooves (3) on its front and rear side walls respectively.

10. A bar stock processing positioning mechanism according to claim 9, characterized in that: The U-shaped frame (12) moves up and down along the inner cavity of the relief groove (3).

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