High-precision aligning mechanism for bars

Abstract

The utility model relates to a high-precision aligning mechanism for bars, which is particularly suitable for quick aligning and clamping of small bars. By means of the mechanism, efficient and accurate aligning of the bars is achieved, and the clamping efficiency and the machining precision are remarkably improved. The bar centering device mainly comprises a base body, a centering rod, a centering device, a limiting piece, a matching piece and a bar chuck. Wherein the aligning device is a core component and comprises a counterweight screw, a balance piece and a spring, the balance piece is radially adjusted by adjusting the counterweight screw to rotate in and out, and then the eccentricity of the centering rod is controlled. According to the utility model, the X axis and the Y axis are respectively adjusted by adopting two groups of aligning devices, so that bidirectional flexible control is realized. In addition, due to the simple operation mode and the compact structural design, the device can be easily integrated into an existing production line, and wide application prospects are achieved. The device has the advantages that the eccentricity of a rod can be accurately controlled to be within 2 microns, the machining quality and efficiency are improved, and meanwhile the device is easy and convenient to maintain, high in stability and high in applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of processing fixtures, in particular to a high-precision centering mechanism for bars. Background Art

[0002] In the field of bar processing, especially for high-precision processing of small bars, the centering mechanism of the fixture plays a vital role. The main function of the centering mechanism is to ensure that the bar can maintain a stable rotation axis during processing, thereby ensuring processing accuracy and product quality. However, the existing centering mechanism has many problems in use, especially when processing bars with small diameters and high precision requirements, its limitations are particularly obvious.

[0003] In the prior art, the centering mechanism for small bars is often complex in design, inconvenient to operate, and it is difficult to achieve ideal centering accuracy. Especially when the bar diameter is small and the processing accuracy requirements are high, the existing centering mechanism often cannot meet the production needs, resulting in unstable product quality and low processing efficiency. In addition, the existing centering mechanism often needs to rely on the experience and skills of the operator during the adjustment process, and cannot achieve fast and accurate automatic adjustment, which further limits its application in the field of high-precision bar processing.

[0004] In view of the problems and shortcomings in the current technology, it is an urgent problem to be solved by technical personnel in this field if reasonable structural design can be used to achieve rapid centering and clamping of small bars, improve clamping efficiency, and reduce the centering time of engineers. Utility Model Content

[0005] The utility model aims to provide a high-precision centering mechanism for bars. The centering mechanism has two groups of centering devices for adjusting the X-axis and the Y-axis respectively, thereby realizing rapid centering control of the centering rod. The entire device simplifies the centering process and significantly improves the clamping efficiency of small bars.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is to design a high-precision centering mechanism for bars, including a base, a centering rod, a centering device, a limit plate, a matching plate and a bar chuck. The base, the centering device, the limit plate and the matching plate are sequentially stacked on the centering rod from front to back. The bar chuck is fixed to the front end of the centering rod and moves and rotates with the centering rod. The centering device is a pair, which respectively realizes the adjustment of the X-axis and Y-axis of the centering rod.

[0007] Furthermore, the centering device includes a counterweight screw, a balance sheet and a spring.

[0008] Furthermore, a centering hole is provided at the center of the balancing plate. The centering hole is a rounded rectangle with complete semicircular corners, and its shape can realize radial centering of the centering rod.

[0009] Furthermore, a spring hole and a groove are provided on the outer circumference of the balancing plate. The spring hole is provided at one corner of the rounded rectangle of the centering hole, and the groove is provided in the direction of the straight side of one side of the centering hole. The spring hole and the groove are provided adjacent to each other.

[0010] Furthermore, the spring is placed in the spring hole to maintain the centering reaction force of the balancing piece.

[0011] Furthermore, the counterweight screw includes a handle, an external thread and an adjusting tail cone.

[0012] Furthermore, a circular hole is opened on the base, and a threaded cylindrical pin is arranged in the circular hole. The external thread on the counterweight screw cooperates with the internal thread of the threaded cylindrical pin to realize the rotation of the counterweight screw in and out.

[0013] Furthermore, the counterweight screw portion is an adjusting tail cone, which is conical in shape. The adjusting tail cone is inserted into the groove of the balance piece, and radial adjustment of the balance piece is achieved by controlling the insertion depth of the adjusting tail cone and cooperating with the reaction force of the spring.

[0014] Furthermore, the two sets of centering devices are installed in mirror images of each other to respectively adjust the X-axis and Y-axis of the centering rod.

[0015] Preferably, the device further comprises positioning pins to achieve positioning of various components of the centering mechanism.

[0016] The advantages and beneficial effects of the utility model are as follows: the utility model can accurately control the eccentricity of the bar to within 2um by adjusting the two counterweight screws. The mechanism is provided with adjustment devices in both the X and Y directions to achieve two-way flexible control. The simple operation mode and compact structural design make it easy to integrate into the existing production line. In addition, the mechanism has high stability, strong applicability, and simple maintenance, which can effectively improve the quality and efficiency of bar processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the utility model.

[0018] Figure 2 This is the internal structure diagram of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the limiting piece of the utility model.

[0020] Figure 4It is a schematic diagram of the counterweight screw of the utility model.

[0021] Among them, 1-base, 2-centering rod, 3-centering device, 4-limiting plate, 5-matching plate, 6-bar chuck, 7-threaded cylindrical pin, 8-locating pin, 31-counterweight screw, 32-balancing plate, 33-spring, 311-handle, 312-external thread, 313-adjusting cone. DETAILED DESCRIPTION

[0022] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention. Example

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a high-precision centering mechanism for rods is shown, the core of which is composed of a base 1, a centering rod 2, a centering device 3, a limit plate 4, a matching plate 5 and a rod chuck 6. These components are precisely designed and manufactured to jointly achieve high-precision control of the centering rod.

[0024] Equipment structure:

[0025] Base 1: As the supporting foundation of the whole mechanism, base 1 has sufficient rigidity and stability. It has multiple round holes for installing threaded cylindrical pins 7, which cooperate with the external threads 312 of the counterweight screw 31 to provide precise guidance and support for the rotation of the counterweight screw 31.

[0026] Centering rod 2: It is inserted through the center of the base 1 and is a key component for clamping and positioning the bar. A bar chuck 6 is fixed to the front end of the centering rod 2 to clamp the bar workpiece and perform corresponding actions as the centering rod 2 moves and rotates.

[0027] Centering device 3: designed as a pair, respectively installed on both sides of the centering rod 2, for achieving precise adjustment of the centering rod 2 in the X-axis and Y-axis directions. Each centering device 3 includes key components such as a counterweight screw 31, a balance sheet 32 ​​and a spring 33. The centering hole opened in the center of the balance sheet 32 ​​has a special rounded rectangular shape, which can achieve radial centering of the centering rod 2. At the same time, the outer circumference of the balance sheet 32 ​​also opens a spring hole 322 and a groove 323 for installing the spring 33 and the adjustment tail cone 313 of the counterweight screw 31.

[0028] The limiting piece 4 and the matching piece 5 are passed through the centering rod 2 and are located at the tail of the centering device 6 to play the role of limiting and matching, ensuring that the relative position relationship between the various components is stable and reliable.

[0029] Bar chuck 6: fixed at the front end of the centering rod 2, used to clamp the bar workpiece. Its compact design and uniform clamping force can ensure the stability and accuracy of the bar during processing.

[0030] The base 1, the centering device 3, the stopper 4 and the matching plate 5 are sequentially stacked on the centering rod 2 to form a compact and stable structure. The bar chuck 6 is fixed to the front end of the centering rod 2 and can move and rotate accordingly with the movement and rotation of the centering rod 2. It is particularly worth mentioning that the centering device 3 is designed as a pair, which is responsible for adjusting the centering rod 2 in the X-axis and Y-axis directions respectively. This design enables the mechanism to have the ability of two-way flexible control.

[0031] In the centering device 3, the weight screw 31, the balance sheet 32 ​​and the spring 33 are key components. The centering hole 321 opened in the center of the balance sheet 32 ​​is in the shape of a rounded rectangle with complete semicircular corners. This design enables the centering rod 2 to achieve radial centering. At the same time, the outer circumference of the balance sheet 32 ​​also opens a spring hole 322 and a groove 323, and the spring 33 is placed in the spring hole 322 to maintain the centering reaction force of the balance sheet. The weight screw 31 is inserted into the groove 323 of the balance sheet 32 ​​through the adjustment tail cone 313 at its bottom. By controlling the insertion depth of the adjustment tail cone 313 and cooperating with the reaction force of the spring 33, the radial adjustment of the balance sheet 32 ​​is achieved.

[0032] In addition, a circular hole is provided on the base 1, in which a threaded cylindrical pin 7 is arranged, which cooperates with the external thread 312 on the counterweight screw 31, so that the counterweight screw 31 can be rotated in and out, thereby conveniently adjusting the position of the centering rod 2. The entire mechanism also realizes the precise positioning of each component through the positioning pin 8, ensuring the stability and accuracy of the mechanism.

[0033] Workflow:

[0034] Preparation stage: First, check whether the various components are intact and ensure that the mechanism is in good working condition. Then, place the bar workpiece in the bar chuck 6 and adjust the position of the chuck so that it clamps the bar workpiece.

[0035] Adjustment stage: Next, the operator needs to turn the two counterweight screws 31 to adjust the position of the centering rod 2 in the X-axis and Y-axis directions respectively. In the process of turning the counterweight screw 31, the adjustment tail cone 313 at the bottom will move in the groove 323 of the balance plate 32, thereby changing the position of the balance plate 32. At the same time, the spring 33 will provide a corresponding reaction force to ensure that the balance plate 32 can be stably maintained in the desired position. By continuously adjusting the rotation angle and depth of the counterweight screw 31, precise control of the centering rod 2 can be achieved, so that the eccentricity of the rod is gradually reduced to within the preset range.

[0036] Processing stage: After the adjustment of the centering rod 2 is completed, the operator can start the processing equipment to process the bar. During the processing, due to the precise control of the centering mechanism 3, the runout of the bar will be significantly reduced, thereby improving the processing quality and efficiency.

[0037] Maintenance stage: After using for a period of time, the operator needs to perform regular inspection and maintenance on the self-aligning mechanism 3, including cleaning the debris and dirt on each component, checking the elasticity of the spring 33 and the fastening of the counterweight screw 31, etc. Ensure that the mechanism is always in good working condition to extend its service life and improve work efficiency.

[0038] The above is a detailed introduction to a high-precision centering mechanism for rods provided by the utility model. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present utility model.

Claims

1. A high-precision centering mechanism for a bar, the centering mechanism comprising a base (1), a centering rod (2), a centering device (3), a stopper (4), a matching plate (5) and a bar chuck (6), characterized in that: The base (1), the centering device (3), the limit plate (4) and the matching plate (5) are sequentially stacked on the centering rod (2) from front to back, the bar chuck (6) is fixed to the front end of the centering rod (2) and moves and rotates with the centering rod (2), and the centering device (3) is a pair of mirror images, respectively realizing the adjustment of the X-axis and Y-axis of the centering rod (2).

2. The high-precision centering mechanism for bars according to claim 1 is characterized in that: The centering device (3) comprises a counterweight screw (31), a balance sheet (32) and a spring (33), and radial adjustment of the balance sheet (32) is achieved by controlling the counterweight screw (31) in cooperation with the reaction force of the spring (33).

3. The high-precision centering mechanism for bars according to claim 2 is characterized in that: A centering hole (321) is provided at the center of the balancing plate (32), a spring hole (322) and a groove (323) are provided at the outer circumference of the balancing plate (32), the centering rod (2) cooperates with the centering hole (321), the spring (33) is arranged in the spring hole (322), and the counterweight screw (31) cooperates with the groove (323).

4. The high-precision centering mechanism for bars according to claim 3 is characterized in that: The centering hole (321) is a rounded rectangle with complete semicircular corners; the spring hole (322) is opened at a corner of one side of the rounded rectangle of the centering hole (321); the groove (323) is opened in the direction of a straight edge of one side of the centering hole (321); and the spring hole (322) and the groove (323) are opened adjacent to each other.

5. The high-precision centering mechanism for bars according to claim 3 is characterized in that: The counterweight screw (31) comprises a handle (311), an external thread (312) and an adjusting tail cone (313). The bottom of the counterweight screw (31) is the adjusting tail cone (313). The adjusting tail cone (313) is conical. The adjusting tail cone (313) is inserted into the groove (323) of the balancing plate (32). The radial adjustment of the balancing plate (32) is achieved by controlling the insertion depth of the adjusting tail cone (313) and cooperating with the reaction force of the spring (33).

6. A high-precision centering mechanism for bars according to claim 5, characterized in that: The base (1) is provided with a circular hole, in which a threaded cylindrical pin (7) is arranged, and the external thread (312) on the counterweight screw (31) cooperates with the internal thread of the threaded cylindrical pin (7) to achieve the rotation of the counterweight screw (31) in and out.

7. A high-precision centering mechanism for bars according to any one of claims 1 to 6, characterized in that: The device comprises a positioning pin (8) to achieve the positioning of various components of the centering mechanism.

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