Positioning adjustment mechanism

Abstract

The present invention provides a positioning adjustment mechanism, which relates to the field of mechanical processing, and comprises a core shaft, a rough positioning mechanism and a precise positioning mechanism; the rough positioning mechanism is provided with an axial through hole, and the core shaft and the buffer force adjustment mechanism are arranged in the through hole; the precise positioning mechanism is sleeved on the rough positioning mechanism, and forms a micrometer-like structure with the rough positioning mechanism; the buffer force adjustment mechanism is connected to the above-mentioned core shaft, and is used to buffer the pressure impact of the target tooling stopping; the rough positioning mechanism pre-roughly sets the forward or stop position of the target tooling, and the precise positioning mechanism further precisely adjusts the position of the target tooling through the differential movement of the thread on the precise positioning adjustment dial according to the position of the rough positioning mechanism; the positioning adjustment mechanism of the present invention has a simple structure, is easy to operate, can effectively buffer the impact pressure of the load, and can accurately position and read the target tooling during the stop positioning process.

Description

Technical Field

[0001] The invention relates to the field of mechanical processing, and in particular to a precise positioning adjustment mechanism capable of recording numerical values. Background Art

[0002] At present, in the process of adjusting equipment and tooling in many fields such as bench lathes, processing equipment, automation equipment, tooling mechanism positioning, etc., stops, screws, centers, molds, or measurement while adjusting are used. There are also many automation equipment that rely entirely on experience and feel to adjust. The problem caused by the above phenomenon is that the position is inaccurate, and different people adjust the same equipment and the same tooling to produce different products. The precise laser measurement is only a measurement method and cannot achieve the stop effect. For example, the micrometer has high accuracy, but is not impact-resistant and heavy-loaded. Products with buffers and stops, whether it is hydraulic buffer or spring buffer, including brands such as FESCO, SMC and SRC, cannot be accurately adjusted and data cannot be recorded, causing a lot of inconvenience to the equipment adjusters and those who take over the equipment later, and the problem of unstable tooling positioning.

[0003] In the prior art, micrometer knobs are mostly used, but they are not resistant to pressure shock in production and have high procurement costs. Therefore, a positioning adjustment mechanism that can solve the problems of pressure shock resistance and accurate positioning is urgently needed in production. Summary of the invention

[0004] The purpose of the present invention is to provide a positioning and adjustment mechanism, which, in order to solve the above-mentioned problems of withstanding pressure shock and precise positioning, can realize the precise position of the forward or reverse adjustment stop of the target tooling of the equipment according to the precise readings through the differential motion of the thread.

[0005] To achieve the above-mentioned object, the present invention proposes the following technical solutions: a positioning adjustment mechanism, comprising a mandrel, a rough positioning mechanism, a precise positioning mechanism and a buffer force adjustment mechanism;

[0006] The rough positioning mechanism is provided with an axial through hole, and the core shaft and the buffer force adjustment mechanism are arranged in the through hole;

[0007] The precise positioning mechanism is mounted on the rough positioning mechanism and forms a micrometer-like structure with the rough positioning mechanism;

[0008] The buffer force adjustment mechanism is connected to the mandrel and is used to buffer the pressure impact of the target tooling stopping;

[0009] The mandrel supports the coarse positioning mechanism, the coarse positioning mechanism roughly sets the target tooling stop position, and the precise positioning mechanism further finely adjusts the target tooling stop position.

[0010] Further, the coarse positioning mechanism comprises a coarse positioning sleeve and a coarse positioning locking nut; the coarse positioning sleeve is axially provided with a first through hole, and the mandrel is arranged in the first through hole;

[0011] The outer side of the rough positioning sleeve is provided with a first axial scale, the first scale is used for rough positioning of the target tooling, and the rough positioning sleeve is provided with a first thread on the side of the first scale;

[0012] The coarse positioning locking nut is adapted to the first thread and is fixed to one end of the coarse positioning sleeve via the first thread.

[0013] Furthermore, the precise positioning mechanism is installed on the outside of the rough positioning sleeve;

[0014] The precise positioning mechanism comprises a precise positioning sleeve, a precise positioning locking nut and a precise positioning adjustment dial;

[0015] The fixed end of the coarse positioning sleeve and the coarse positioning locking nut is defined as the first end, and the end away from the coarse positioning locking nut is defined as the second end; the second end of the coarse positioning locking nut is also provided with a third thread;

[0016] The fine positioning adjustment dial is provided with a differential thread, and a radially surrounding second scale is provided on the outer side of the fine positioning adjustment dial; the fine positioning adjustment dial and the coarse positioning sleeve form a micrometer-like structure;

[0017] The internal thread of the differential thread of the fine positioning adjustment dial is adapted to the third thread of the second end of the coarse positioning sleeve; the second scale on the outer side of the fine positioning adjustment dial and the first scale together form a reading area of ​​a micrometer-like structure;

[0018] The precision positioning sleeve is axially provided with a second through hole and is sleeved on the precision positioning adjustment dial; the inner wall of the second through hole of the precision positioning sleeve is provided with a second thread, and the second thread is adapted to the external thread of the differential thread of the precision positioning adjustment dial;

[0019] The fine positioning locking nut is installed on the fine positioning adjustment dial and is adapted to the external thread of the differential thread; the fine positioning locking nut is used to fix the relative positions of the fine positioning sleeve and the fine positioning adjustment dial, and the fine positioning locking nut is fixed so that the fine positioning sleeve, the fine positioning adjustment dial and the coarse positioning sleeve are locked at the same time.

[0020] Further, the buffer force adjustment mechanism includes a buffer head, a buffer spring and a pressure adjustment screw;

[0021] The end of the mandrel close to the coarse positioning locking nut is defined as the first end, and the end away from the coarse positioning locking nut is defined as the second end; the second end of the mandrel extends out of the outer end surface of the precise positioning mechanism;

[0022] The buffer head is sleeved on the second end of the core shaft, one end of the buffer spring abuts against the first end face of the core shaft, and the other end abuts against the pressure adjusting screw. The pressure adjusting screw is connected to the first end face of the coarse positioning sleeve by a thread, and the thread is arranged along the expansion and contraction direction of the buffer spring; the buffer force adjustment mechanism buffers the impact pressure on the positioning adjustment mechanism when the target tooling stops, and adjusts the tension of the buffer spring through the pressure adjusting screw according to the speed and force of the target tooling to move forward or backward, so that the buffer force adjustment mechanism can achieve a buffering effect.

[0023] Furthermore, the second thread of the precision positioning sleeve and the external thread of the differential thread of the precision positioning adjustment dial have the same rotation direction, and the precision positioning adjustment dial drives the precision positioning sleeve to move forward or backward at the same time; and the pitch difference between the external thread and the internal thread of the differential thread of the precision positioning adjustment dial is L, L≤0.5, the smaller the pitch difference is, the higher the accuracy of the precision adjustment is.

[0024] The specific working principle of the positioning adjustment mechanism of the present invention is as follows: according to actual production needs, through the cooperation of the coarse positioning sleeve and the coarse positioning locking nut of the coarse positioning mechanism, the approximate position where the target tooling stops is roughly predetermined, and the cylinder or other power system drives the target tooling to contact the buffer head, and the pressure of the target tooling is transmitted to the buffer spring through the core shaft guide. The buffer spring is pressed and drives the core shaft and the buffer head to retract into the inside of the coarse positioning sleeve, and the target tooling stops at the end face of the fine positioning sleeve; the fine positioning adjustment dial is further rotated to accurately position through the differential motion of the fine positioning adjustment dial thread, and the positioning value is read and recorded through the micrometer-like structure reading area formed by the fine positioning adjustment dial and the coarse positioning sleeve, which is beneficial to the subsequent installation and positioning of the stop block after the rough installation of the component.

[0025] It can be seen from the above technical solutions that the technical solution of the present invention provides a positioning adjustment mechanism, which achieves the following beneficial effects:

[0026] The positioning adjustment mechanism disclosed in the present invention has a simple structure and is easy to operate. It includes a core shaft, a coarse positioning mechanism and a precise positioning mechanism. The coarse positioning mechanism is mounted on the core shaft, and the precise positioning mechanism is fixed to the outside of the coarse positioning mechanism through a threaded connection. The three form a three-layer progressive structure; the precise positioning mechanism includes a precise positioning adjustment dial, and the precise positioning adjustment dial is provided with two inner and outer layers of threads with the same rotation direction. The two threads have different pitches, and different pitches are used to produce a differential effect, thereby obtaining a positioning adjustment mechanism with large threads and small feed; in the positioning adjustment mechanism of the present invention, a buffering force adjustment mechanism is also installed, which is used to achieve the effect of buffering the pressure impact of the target tooling when the target tooling is in different operating states; and both the coarse positioning mechanism and the precise positioning mechanism are provided with scales, so that accurate readings can be read during the use of the mechanism, and the effect of precise positioning can be achieved during the equipment adjustment process.

[0027] In addition, the present invention is conducive to improving the installation and debugging speed of mechanical processing equipment, and is conducive to equipment inspection, equipment maintenance, and upgrading and transformation; it is conducive to understanding the impact of the stop position on the positioning accuracy of the product and giving a reasonable impact range; it is helpful to track the product parameters and provide a strong and stable data foundation for intelligent manufacturing; and it can assist in the sample analysis of product manufacturing and provide a parameter basis for the manufacturing data of the product under certain parameters.

[0028] It should be appreciated that all combinations of the foregoing concepts, as well as additional concepts described in greater detail below, may be considered to be part of the inventive subject matter of the present disclosure, provided such concepts are not mutually inconsistent.

[0029] The foregoing and other aspects, embodiments and features of the present invention can be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as the features and / or beneficial effects of the exemplary embodiments, will be apparent from the following description or learned from the practice of the specific embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For clarity, not every component is labeled in every figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, in which:

[0031] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0032] Figure 2 for Figure 1 Specific structural diagram of the middle AA section;

[0033] Figure 3 This is a practical application diagram of the present invention.

[0034] The specific meaning of each mark is as follows:

[0035] 1- spindle, 2- coarse positioning mechanism, 3- precise positioning mechanism, 4- buffer force adjustment mechanism, 2.1- coarse positioning sleeve, 2.2- coarse positioning locking nut, 3.1- fine positioning sleeve, 3.2- fine positioning locking nut, 3.3- fine positioning adjustment dial, 4.1- buffer head, 4.2- buffer spring, 4.3- pressure adjustment screw, 5.1- stop block, 5.2- cylinder, 5.3- target tooling, 5.4- screw rod. DETAILED DESCRIPTION

[0036] In order to better understand the technical content of the present invention, specific embodiments are given and described as follows in conjunction with the accompanying drawings.

[0037] Various aspects of the present invention are described in this disclosure with reference to the accompanying drawings, in which many illustrative embodiments are shown. The embodiments of the present disclosure are not necessarily intended to include all aspects of the present invention. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed by the present invention are not limited to any implementation. In addition, some aspects disclosed by the present invention can be used alone or in any appropriate combination with other aspects disclosed by the present invention.

[0038] Based on the prior art, the existing stop mechanism has a small load impact resistance capacity and is not accurately positioned during the stop positioning. Therefore, the present invention proposes a positioning adjustment mechanism to effectively buffer the impact pressure of the load, and accurately position and read the readings during the stop positioning process.

[0039] The positioning adjustment mechanism of the present invention is further specifically described below in conjunction with the embodiments and drawings.

[0040] Example 1

[0041] Combination Figure 1 and Figure 2 As shown, a positioning adjustment mechanism includes a core shaft 1, a coarse positioning mechanism 2, a precise positioning mechanism 3 and a buffer force adjustment mechanism 4; the coarse positioning mechanism 2 is provided with an axial through hole, and the core shaft 1 and the buffer force adjustment mechanism 4 are arranged in the through hole; the precise positioning mechanism 3 is sleeved on the coarse positioning mechanism 2, and forms a micrometer-like structure with the coarse positioning mechanism 2; the buffer force adjustment mechanism 4 is connected to the above-mentioned core shaft 1, and is used to buffer the pressure impact of the target tooling 5.3 stopping; the core shaft 1 supports the coarse positioning mechanism 2, the coarse positioning mechanism 2 roughly sets the stop position of the target tooling 5.3, and the precise positioning mechanism 3 further finely adjusts the stop position of the target tooling 5.3; thereby, the positioning adjustment mechanism can both buffer the pressure impact of the workpiece stopping and achieve precise positioning of the workpiece stopping position.

[0042] Specifically, the coarse positioning mechanism 2 described in Example 1 includes a coarse positioning sleeve 2.1 and a coarse positioning locking nut 2.2; the coarse positioning sleeve 2.1 is axially provided with a first through hole, and the core shaft 1 is arranged in the first through hole; the coarse positioning sleeve 2.1 is provided with a cylindrical boss along the radial direction at the middle position in its length direction, and the cylindrical boss 2.3 is provided with an axial first scale on its outer side surface, the first scale is used for coarse positioning of the target tooling 5.3, and the coarse positioning sleeve 2.1 is provided with a first thread on both sides of the cylindrical boss; the coarse positioning locking nut 2.2 is adapted to the first thread, and is fixed to one end of the coarse positioning sleeve 2.1 by the first thread; the coarse positioning mechanism 2 roughly sets the stop position of the target tooling 5.3, so that the target tooling 5.3 is initially stopped within the approximate range required by the conditions.

[0043] The precise positioning mechanism 3 is installed on the outside of the coarse positioning sleeve 2.1; the precise positioning mechanism 3 includes a precise positioning sleeve 3.1, a precise positioning locking nut 3.2 and a precise positioning adjustment dial 3.3; the fixed end of the coarse positioning sleeve 2.1 and the coarse positioning locking nut 2.2 is defined as the first end, and the end away from the coarse positioning locking nut 2.2 is defined as the second end; the precise positioning adjustment dial 3.3 and the above-mentioned coarse positioning sleeve 2.1 form a micrometer-like structure.

[0044] The fine positioning adjustment dial 3.3 is provided with a circular annular boss matched with the above-mentioned cylindrical boss near the first end of the coarse positioning sleeve 2.1, and a differential thread is provided near the second end of the coarse positioning sleeve 2.1, and a radially surrounding second scale is provided on the outer side of the circular annular boss; the internal thread of the differential thread of the fine positioning adjustment dial 3.3 is matched with the third thread at the second end of the coarse positioning sleeve 2.1; the second scale on the outer side of the fine positioning adjustment dial 3.3 and the above-mentioned first scale together constitute a reading area of ​​a micrometer-like structure, and the reading area of ​​the micrometer-like structure is used for reading the positioning value after fine positioning.

[0045] The precision positioning sleeve 3.1 is axially provided with a second through hole and is sleeved on the precision positioning adjustment dial 3.3; the inner wall of the second through hole of the precision positioning sleeve 3.1 is provided with a second thread, and the second thread is adapted to the external thread of the differential thread of the above-mentioned precision positioning adjustment dial 3.3; the precision positioning locking nut 3.2 is installed on the precision positioning adjustment dial 3.3 and is adapted to the external thread of the differential thread; the precision positioning locking nut 3.2 is used to fix the relative position of the precision positioning sleeve 3.1 and the precision positioning adjustment dial 3.3, and when the precision positioning locking nut 3.2 is locked, the precision positioning sleeve, the precision positioning adjustment dial and the coarse positioning sleeve are locked at the same time.

[0046] In this embodiment, a buffer force adjustment mechanism 4 is provided in the first through hole of the coarse positioning sleeve 2.1 to buffer the pressure impact when the target tooling 5.3 stops. The buffer force adjustment mechanism 4 includes a buffer head 4.1, a buffer spring 4.2 and a pressure adjustment screw 4.3. The end of the mandrel 1 close to the coarse positioning locking nut 2.2 is defined as the first end, and the end away from the coarse positioning locking nut 2.2 is defined as the second end, and the second end of the mandrel 1 extends out of the outer end face of the precise positioning mechanism 3; the buffer head 4.1 is sleeved on the second end of the mandrel 1, and one end of the buffer spring 4.2 abuts against the mandrel The first end face of the shaft 1 and the other end abut against a pressure adjusting screw 4.3, the pressure adjusting screw 4.3 is connected to the first end face of the coarse positioning sleeve 2.1 by a thread, and the thread is arranged along the extension and contraction direction of the buffer spring 4.2; the buffer head 4.1 contacts the moving target tooling 5.3, the target tooling 5.3 slows down, and applies pressure to the inner side of the core shaft 1, the pressure compresses the buffer spring 4.2, and the compression of the buffer spring 4.2 drives the core shaft 1 and the buffer head 4.1 to move to the inside of the second through hole, so that the target tooling 5.3 stops at the outer end face of the precise positioning sleeve 3.1.

[0047] The buffer force adjustment mechanism 4 buffers the impact pressure on the positioning adjustment mechanism when the target tooling 5.3 stops, and adjusts the tension of the buffer spring 4.2 according to the speed and force of the target tooling 5.3 moving forward or backward through the pressure adjustment screw 4.3, so that the buffer force adjustment mechanism 4 can achieve a buffering effect in different situations.

[0048] Further combined with Example 1, the second thread of the precision positioning sleeve 3.1 and the external thread of the differential thread of the precision positioning adjustment dial 3.3 have the same rotation direction, and the pitch difference between the external thread and the internal thread of the differential thread of the precision positioning adjustment dial 3.3 is L, L≤0.5, the precision positioning adjustment dial drives the precision positioning sleeve to move forward or backward at the same time, the smaller the pitch difference is, the higher the accuracy of the precision adjustment is.

[0049] The external thread specification of the differential thread of the fine positioning adjustment dial 3.3 in this embodiment is M16×2, and the internal thread specification of the differential thread is M22×1.5, that is, when the external thread rotates one circle, the internal thread rotates one circle, driving the fine positioning sleeve to move 0.5mm.

[0050] Example 2

[0051] Combination Figure 3The specific use of the positioning adjustment mechanism of the present invention is shown in Example 2. The specific working process of the rough positioning adjustment mechanism of the present invention is as follows: In Example 2, according to actual production needs, the target tooling 5.3 is driven by the cylinder 5.2 to move on the screw rod 5.4, and the positioning adjustment mechanism is fixed on the stop block 5.1; the positioning adjustment mechanism is through the rough positioning sleeve 2.1 and the rough positioning locking nut 2.2 in the rough positioning mechanism 2, and the approximate stop position of the target tooling 5.3 is roughly predetermined, as shown in the attached Figure 3 In the position a shown in the figure, the cylinder 5.2 drives the target tooling 5.3 to slide on the screw rod 5.4, contacts the buffer head 4.1 on the left side, and transmits the pressure of the target tooling 5.3 to the buffer spring 4.2 through the guide of the core shaft 1. The buffer spring 4.1 is compressed to drive the core shaft 1 and the buffer head 4.1 to retract into the interior of the fine positioning sleeve 3.1, and the target tooling 5.3 is docked at the right outer end surface position of the fine positioning sleeve 3.1; the fine positioning adjustment dial 3.3 is further rotated to accurately position through the differential motion of the fine positioning adjustment dial 3.3 thread; and the positioning value is accurately read and recorded through the reading area formed by the fine positioning adjustment dial 3.3 and the coarse positioning sleeve 2.1. When the target tooling 5.3 is positioned subsequently, the positioning adjustment mechanism data can be directly adjusted to the recorded value. The cylinder 5.2 directly drives the target tooling 5.3 to the right end surface position of the positioning adjustment mechanism. At the same time, it can also facilitate the subsequent installation and positioning of the stop block 5.1 after disassembly and replacement.

[0052] Although the positioning adjustment mechanism of the present invention has been disclosed as a preferred embodiment, it is not intended to limit the application scenarios of the present invention and its embodiments. A person with ordinary knowledge in the technical field to which the present invention belongs can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A positioning adjustment mechanism, characterized in that: It comprises a core shaft (1), a rough positioning mechanism (2), a precise positioning mechanism (3) and a buffer force adjustment mechanism (4); The coarse positioning mechanism (2) is provided with an axial through hole, and the core shaft (1) and the buffer force adjustment mechanism (4) are arranged in the through hole; the core shaft (1) supports the coarse positioning mechanism (2); The coarse positioning mechanism (2) comprises a coarse positioning sleeve (2.1) and a coarse positioning locking nut (2.2); the coarse positioning sleeve (2.1) is axially provided with a first through hole, and the core shaft (1) is arranged in the first through hole; The outer side of the rough positioning sleeve (2.1) is provided with a first axial scale, the first scale is used for rough positioning of the target tooling (5.3), and the rough positioning sleeve (2.1) is provided with a first thread on the side of the first scale; The coarse positioning locking nut (2.2) is adapted to the first thread and is fixed to one end of the coarse positioning sleeve (2.1) via the first thread; The precise positioning mechanism (3) is mounted on the rough positioning mechanism (2) and forms a micrometer-like structure with the rough positioning mechanism (2); the rough positioning mechanism (2) roughly sets the stop position of the target tooling (5.3), and the precise positioning mechanism (3) further precisely adjusts the stop position of the target tooling (5.3); The precise positioning mechanism (3) is installed on the outside of the rough positioning sleeve (2.1); The precise positioning mechanism (3) comprises a precise positioning sleeve (3.1), a precise positioning locking nut (3.2) and a precise positioning adjustment dial (3.3); The fixed end of the coarse positioning sleeve (2.1) and the coarse positioning locking nut (2.2) is defined as the first end, and the end away from the coarse positioning locking nut (2.2) is defined as the second end; the second end of the coarse positioning sleeve (2.1) is provided with a third thread; The fine positioning adjustment dial (3.3) and the above-mentioned coarse positioning sleeve (2.1) form a micrometer-like structure, and the fine positioning adjustment dial (3.3) is provided with a differential thread, and the internal thread of the differential thread of the fine positioning adjustment dial (3.3) is adapted to the third thread of the second end of the coarse positioning sleeve (2.1); The outer side of the precision positioning adjustment scale plate (3.3) is provided with a radially surrounding second scale, and the second scale and the first scale together form a reading area of ​​a micrometer-like structure; The precision positioning sleeve (3.1) is axially provided with a second through hole and is sleeved on the precision positioning adjustment dial (3.3); the inner wall of the second through hole of the precision positioning sleeve (3.1) is provided with a second thread, and the second thread is adapted to the external thread of the differential thread of the precision positioning adjustment dial (3.3); The precision positioning locking nut (3.2) is mounted on the precision positioning adjustment dial (3.3) and is adapted to the external thread of the differential thread; the precision positioning locking nut (3.2) is used to fix the relative position of the precision positioning sleeve (3.1) and the precision positioning adjustment dial (3.3); The buffer force adjustment mechanism (4) is connected to the core shaft (1) and is used to buffer the pressure impact of the target tooling (5.3) when it stops; The buffer force adjustment mechanism (4) comprises a buffer head (4.1), a buffer spring (4.2) and a pressure adjustment screw (4.3); The end of the mandrel (1) close to the coarse positioning locking nut (2.2) is defined as the first end, and the end away from the coarse positioning locking nut (2.2) is defined as the second end, and the second end of the mandrel (1) extends out of the outer end surface of the precise positioning mechanism (3); The buffer head (4.1) is sleeved on the second end of the core shaft (1); one end of the buffer spring (4.2) abuts against the first end face of the core shaft (1), and the other end abuts against the pressure adjustment screw (4.3); the pressure adjustment screw (4.3) is connected to the first end face of the coarse positioning sleeve (2.1) via a thread, and the thread is arranged along the expansion and contraction direction of the buffer spring (4.2).

2. The positioning adjustment mechanism according to claim 1, characterized in that: The second thread of the precision positioning sleeve (3.1) and the external thread of the differential thread of the precision positioning adjustment dial (3.3) have the same rotation direction.

3. The positioning adjustment mechanism according to claim 2, characterized in that: The pitch difference between the external thread and the internal thread of the differential thread of the precise positioning adjustment dial (3.3) is L, and L≤0.5.

Images