An angle adjusting mechanism for a numerical control cylindrical grinder

Abstract

This application relates to the field of machining equipment technology, and particularly to an angle adjustment mechanism for CNC cylindrical grinding. The mechanism is located on the side of one end of a rectangular grinding platform, with a clamping fixture concentrically connected to the other end of the platform. The angle adjustment mechanism includes a first mounting plate, a reference adjustment plate, a first locking device, and a dial indicator, a leveling bolt, and an adjusting screw that are fixedly positioned on the first mounting plate and adjustable along the Y direction. One end of the reference adjustment plate is fixedly connected to the side of the rectangular grinding platform, and the other end has a displacement adjustment groove extending along the Y direction. One end of the first locking device passes through the displacement adjustment groove and is positioned and connected to the upper surface of the first mounting plate. This application achieves a breakthrough in dual precision for workpiece taper machining through the deep coupling of mechanical reference and dynamic monitoring, possessing advantages such as ingenious structural design, high machining accuracy, good synergy, and strong practicality.

Description

Technical Field

[0001] This application relates to the field of machining equipment technology, specifically to an angle adjustment mechanism for assisting in CNC external cylindrical grinding of workpiece surface taper. Background Technology

[0002] As modern manufacturing demands increasingly higher precision in workpiece processing and production efficiency, the precise grinding of workpiece surface tapers has become a crucial step in ensuring the performance of mechanical equipment.

[0003] In existing technologies, when CNC cylindrical grinding machines process tapered surfaces, they typically require two independent mechanisms or functional modules to complete the two stages of shaft alignment and angle adjustment for machining positioning. The shaft alignment stage usually involves rotating the workpiece with the headstock spindle and providing auxiliary support, requiring manual or semi-automatic adjustment of the coaxiality of the two axes (e.g., by checking runout with a dial indicator). The angle adjustment stage generally uses a mechanical indexing plate, manual fine-tuning device, or single-axis servo positioning structure. The two independent mechanisms are not interconnected in terms of mechanical structure, control logic, and error compensation mechanism, resulting in problems such as low machining accuracy. In addition, shaft alignment requires repeated trial grinding and parameter correction, and angle adjustment requires manual switching of the indexing plate or input of CNC commands, resulting in a grinding and debugging time of 20-30 minutes per piece. This process is not only inefficient, but also prone to introducing batch processing inconsistency risks due to differences in operator experience, seriously restricting production capacity and yield.

[0004] Therefore, there is an urgent need for an angle adjustment mechanism with a reasonable structural design and high machining accuracy. Utility Model Content

[0005] The purpose of this application is to provide an angle adjustment mechanism for CNC external cylindrical grinding, so as to solve the problems of unreasonable structural design, low machining accuracy and poor coupling of adjustment mechanism in the prior art.

[0006] The embodiments of this application can be implemented through the following technical solutions:

[0007] An angle adjustment mechanism for CNC cylindrical grinding is disposed on the side of one end of a rectangular leveling table. The other end of the rectangular leveling table is concentrically connected to a clamping fixture, which includes a first mounting plate, a reference adjustment plate, a first locking device, and a dial indicator, a leveling bolt, and an adjusting screw that are fixedly positioned on the first mounting plate and adjustable along the Y direction. One end of the reference adjustment plate is fixedly connected to the side of the rectangular leveling table, and the other end is provided with a displacement adjustment groove extending along the Y direction. One end of the first locking device passes through the displacement adjustment groove and is positioned and connected to the upper surface of the first mounting plate.

[0008] Furthermore, one end of the reference adjustment plate is provided with a reference block extending along the X direction to the top of the first mounting plate. The two sides of the reference block in the Y-axis direction are reference surfaces. Both reference surfaces of the reference block are parallel to the central axis of the calibrated rectangular platform. The measuring rod of the dial indicator is set along the Y direction toward one of the reference surfaces. The alignment bolt and the adjusting screw are both set along the Y direction toward the other reference surface.

[0009] Furthermore, the first mounting plate is provided with a positioning clamp on one side in the Y-axis direction. The positioning clamp is through in the Y direction and has an open top. The sleeve of the dial indicator's measuring rod is located inside the positioning clamp and is locked in place at the top opening of the positioning clamp by bolts. The measuring rod of the dial indicator extends in the Y direction to the reference surface on one side of the reference block.

[0010] Furthermore, the upper surface of the first mounting plate is provided with a downwardly recessed mounting groove, the positioning clamp is installed in the mounting groove, and the measuring rod of the dial indicator connected in the positioning clamp and the adjusting screw are located in the same horizontal plane.

[0011] Furthermore, a positioning plate is provided on the other side of the first mounting plate in the Y-axis direction. One end of the alignment bolt passes through one end of the positioning plate in the Y direction and abuts against the reference surface on the other side of the reference block through the positioning reference medium to perform zero-position alignment.

[0012] Furthermore, one end of the adjusting screw passes through the other end of the positioning plate along the Y direction and engages with the reference surface at the end of the reference block, thereby adjusting the connection position of the adjusting screw relative to the positioning plate by rotation.

[0013] Furthermore, the adjusting screw and the dial indicator are both located at the free end of the reference block and are arranged opposite to each other.

[0014] Furthermore, it also includes a tension spring, the two ends of which are respectively connected to the reference adjustment plate and the first mounting plate.

[0015] Furthermore, the first mounting plate is slidably connected to the third worktable of the frame along the X direction.

[0016] The angle adjustment mechanism for CNC cylindrical grinding provided in the embodiments of this application has at least the following beneficial effects:

[0017] This application achieves a dual precision breakthrough in workpiece taper machining through the deep coupling of mechanical reference and dynamic monitoring: On the one hand, through the rigid connection between the reference adjustment plate and the regular rectangular platform and the double reference surface design of the reference block, an absolute zero reference (parallelism between the reference surface and the central axis ≤ 0.002 mm) is constructed in the Y-axis direction. Combined with the positioning of the displacement adjustment slide by the first locking device, the reference drift caused by assembly gaps or thermal deformation in the traditional structure is eliminated; on the other hand, through the coordinated layout of the dial indicator, the alignment bolt, and the adjusting screw, the micron-level displacement and angle change of the regular rectangular platform are converted into quantifiable real-time data, so that the taper adjustment accuracy reaches within ±5″ and the single adjustment response time is ≤ 0.5 seconds. It has the advantages of ingenious structural design, high machining accuracy, good coordination, and strong practicality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram illustrating the application of this application in CNC cylindrical grinding;

[0019] Figure 2 This is a schematic diagram of the structure of this application in the zero-position alignment state;

[0020] Figure 3 This is a schematic diagram of the structure of this application under the condition of adjusting the grinding taper;

[0021] Figure 4 This is a schematic diagram of the method for calculating the grinding taper in this application.

[0022] Numbers in the diagram

[0023] 1-Regulated rectangular platform; 2-Clamping device; 4-Center device; 5-Grinding device; 6-Concentric connector; 8-Support device;

[0024] 31-First mounting plate; 311-Mounting groove; 312-Positioning clamp; 313-Positioning plate; 32-Dial indicator; 33-Alignment bolt; 34-Adjusting screw; 35-Tension spring; 36-Reference adjustment plate; 3611-Displacement adjustment slide; 362-Reference block; 37-First locking device; 39-Positioning reference medium;

[0025] S - Frame; S3 - Third worktable; S31 - Third slide rail. Detailed Implementation

[0026] The present application will now be further described based on preferred embodiments and with reference to the accompanying drawings.

[0027] Furthermore, for ease of understanding, various components on the drawings have been enlarged or reduced, but this is not intended to limit the scope of protection of this application.

[0028] Singular forms of words also include plural meanings, and vice versa.

[0029] In the description of the embodiments of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, in the description of this application, in order to distinguish different units, the terms "first," "second," etc. are used in this specification, but these are not limited by the manufacturing order, nor should they be construed as indicating or implying relative importance. Their names may differ in the detailed description and claims of this application.

[0030] The vocabulary used in this specification is for illustrative purposes and is not intended to limit the scope of this application. It should also be noted that, unless otherwise expressly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection via an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of these terms in this application.

[0031] Figure 1 This is a schematic diagram of the overall structure of an angle adjustment mechanism for CNC external cylindrical grinding according to this application, as shown below. Figure 1 As shown, an angle adjustment mechanism for CNC cylindrical grinding is provided on the side of one end of a regular rectangular platform 1. The other end of the regular rectangular platform 1 is concentrically connected to a clamping fixture, which includes a clamping device 2, a center device 4, and a support device 8. The clamping device 2 and one end of the regular rectangular platform 1 are concentrically connected by a concentric connector 6. A grinding device 5 is provided on one side of the clamping area of ​​the clamping device 2 and the center device 4. The grinding device 5 is slidably connected to the frame S along the Y direction, and the regular rectangular platform 1 is slidably connected to the frame S along the X direction. The angle adjustment mechanism is a split design, and the two split structural components can be relatively displaced along the X direction under the drive of the regular rectangular platform 1 to meet the grinding requirements.

[0032] Based on this, in order to ensure that the taper of the workpiece can be accurately processed, the applicant has made an innovative design to the structure of the angle adjustment mechanism, so that the angle adjustment mechanism in this application can not only perform benchmark calibration on the rectangular platform 1, but also obtain the angle of rotation of the rectangular platform 1 around the central axis.

[0033] Specifically, such as Figure 2, Figure 3 As shown, the angle adjustment mechanism 3 includes a first mounting plate 31, a reference adjustment plate 36, a first locking device 37, and a dial indicator 32, a leveling bolt 33, and an adjusting screw 34 that are fixedly positioned on the first mounting plate 31 and adjustable along the Y direction. One end of the reference adjustment plate 36 is fixedly connected to the side of the regular rectangular platform 1, and the other end is provided with a displacement adjustment groove 3611 extending along the Y direction. One end of the first locking device 37 passes through the displacement adjustment groove 3611 and is positioned and connected to the upper surface of the first mounting plate 31 to fix the connection position of the reference adjustment plate 36 on the first mounting plate 31.

[0034] Furthermore, one end of the reference adjustment plate 36 is provided with a reference block 362 extending along the X direction above the first mounting plate 31. The reference block 362 has two reference surfaces on both sides in the Y-axis direction. Both reference surfaces of the reference block 362 are parallel to the central axis of the straightening rectangular platform 1. The measuring rod of the dial indicator 32 is set along the Y-axis toward one of the reference surfaces. The alignment bolt 33 and the adjusting screw 34 are both set along the Y-axis toward the other reference surface. By adjusting the connection position of the adjusting screw 34 or the alignment bolt 33 relative to the first mounting plate 31, the straightening rectangular platform 1 and the clamping device 2 can be driven to rotate synchronously around the rotation axis of the concentric connector 6. The above settings can provide a reliable reference for the positioning of the straightening rectangular platform 1 in the Y-axis direction, and can also facilitate the accurate monitoring of position changes by the dial indicator 32, which helps to reduce positioning errors and improve machining accuracy and assembly quality. At the same time, once the adjusting screw 34 pushes the reference block 362 to change its position angle, the adjustment distance can be read by the dial indicator 32, and then the rotation angle of the straightening rectangular platform 1 around the rotation axis can be calculated.

[0035] In some preferred embodiments, the first mounting plate 31 is provided with positioning clamps 312 and positioning plates 313 on both sides of the Y-axis direction. The positioning clamps 312 are through-holes along the Y-axis and have an open top. The sleeve of the measuring rod of the dial indicator 32 is located inside the positioning clamps 312 and is locked in place by bolts at the top opening of the positioning clamps 312. The measuring rod of the dial indicator 32 extends along the Y-axis to the reference surface on one side of the reference block 362. The alignment bolts... One end of 33 passes through one end of the positioning plate 313 along the Y direction and abuts against the reference surface on the other side of the reference block 362 through the positioning reference medium 39. Zero position is found by the cylindrical generatrix positioning and aligning method. In the zero position aligning state, the central axis of the regular rectangular platform 1 is perpendicular to the grinding surface of the grinding device 5. When the regular rectangular platform 1 is perpendicular to the grinding surface of the grinding device 5, the aligning bolt 33 and the positioning plate 313 are locked in place by the nut.

[0036] In some preferred embodiments, after the alignment rectangular platform 1 has completed zero-positioning, the bolts on the positioning clamp 312 are loosened, and the connection position between the sleeve outside the measuring rod of the dial indicator 32 and the positioning clamp 312 is adjusted so that the pointer on the dial indicator 32 returns to zero. At this time, the bolts on the positioning clamp 312 are tightened.

[0037] In some preferred embodiments, one end of the adjusting screw 34 passes through the other end of the positioning plate 313 along the Y direction and engages with the reference surface at the end of the reference block 362. By rotating and adjusting the connection position of the adjusting screw 34 relative to the positioning plate 313, the thrust applied by the adjusting screw 34 to the end of the reference block 362 along the Y direction can be adjusted.

[0038] In some preferred embodiments, the adjusting screw 34 and the dial indicator 32 are both located at the free end of the reference block 362 and are arranged opposite to each other. This allows the adjusting screw 34 to apply only a small thrust to make the free end of the reference adjusting plate 36 start to rotate, thereby causing the regular rectangular platform 1 to rotate around its rotation axis. This has the advantages of facilitating simultaneous precise adjustment and measurement, efficient calibration, and ensuring compact structure and convenient operation.

[0039] In some preferred embodiments, the upper surface of the first mounting plate 31 is provided with a downwardly recessed mounting groove 311, the positioning clamp 312 is installed in the mounting groove 311, and the measuring rod of the dial indicator 32 connected in the positioning clamp 312 and the adjusting screw 34 are located in the same horizontal plane, so as to ensure that the adjustment direction of the positioning screw and the measurement direction of the dial indicator are strictly parallel in space, and avoid measurement errors caused by the height difference between the two.

[0040] In some preferred embodiments, the angle adjustment mechanism further includes a tension spring 35, the two ends of which are connected to the reference adjustment plate 36 and the first mounting plate 31, respectively, for applying a tension force along the Y direction to the reference adjustment plate 36, thereby ensuring that the thrust applied by the adjustment screw 34 to the end of the reference block 362 is balanced, enhancing positioning stability, flexibly adjusting the position of the positioning block and realizing bidirectional adjustment and dynamic compensation, and improving the system adaptability and accuracy.

[0041] In some preferred embodiments, the angle adjustment mechanism is slidably connected to the frame S along the X direction, a third worktable S3 is fixedly connected to the frame S, a third slide rail S31 is fixedly connected to the third worktable S3 along the X direction, and the bottom of the first mounting plate 31 is slidably connected to the third slide rail S31, so that the regular rectangular platform 1 can drive the angle adjustment mechanism to move back and forth along the X direction.

[0042] The following combination Figure 4 This application describes the method for calculating the grinding taper:

[0043] When the zero degree is adjusted, the reference point where the dial indicator 32 and the reference block 362 meet is recorded as A. The first vertical distance from point A to the central axis of the straight rectangular platform 1 can be measured and recorded as a1. Since the distance value of a1 is constant after zeroing, there is no need to readjust and measure it every time grinding. Therefore, it is only necessary to measure the change distance of the measuring rod of the dial indicator 32 and the straight distance from the rotation center of the concentric connector 6 to point A. The tilt angle of the straight rectangular platform 1 relative to the grinding device 5 can be obtained by using the Pythagorean theorem. As the adjusting screw 34 drives the reference block 362 and the straightening rectangular platform 1 to press towards or away from the dial indicator 32, the change in distance during the adjustment process can be read on the dial indicator 32 and recorded as a2. The straight-line distance from the rotation center B of the concentric connector 6 to point A is constant and measurable and recorded as c1. Therefore, each time the grinding taper is adjusted, it is only necessary to read the value of the dial indicator 32 on the zeroed device, and the tilt angle of the straightening rectangular platform 1 relative to the grinding device 5 can be obtained by using trigonometric functions. The above data calculation process can be achieved with the help of existing data tables. In this way, the tilt angle (grinding taper) can be adjusted accurately and finely.

[0044] It should be added that, in order to verify whether the central axis of the rectangular platform 1 is perpendicular to the grinding surface of the grinding device 5 during the zero-positioning process, while using the positioning reference medium 39 for generatrix positioning, the workpiece can also be clamped in the support of the clamping device 2 and the center device 4 for trial grinding to confirm whether the zero-positioning is accurate. In addition, even if the reading on the dial indicator 32 does not return to zero after the zero-positioning is completed, it will not affect the subsequent data statistics. The reading on the dial indicator 32 at this moment can be used as the reference value for subsequent adjustment data and summed. The above example of taper adjustment is only used as a preferred example of the related technology to illustrate the concept. Its purpose is to assist in understanding and should not be regarded as a limitation on the technical scope, implementation method, etc. of this application.

[0045] The specific embodiments of this application have been described in detail above. For those skilled in the art, several improvements and modifications can be made to this application without departing from the principle of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. An angle adjustment mechanism for a numerical control cylindrical grinder, which is arranged on the side surface of one end of a square table (1), and the other end of the square table (1) is connected with a clamping tool in a concentric manner, characterized in that, include: The first mounting plate (31), the reference adjustment plate (36), the first locking device (37), and the dial indicator (32), the alignment bolt (33), and the adjusting screw (34) that are fixedly adjusted along the Y direction on the first mounting plate (31) are provided. One end of the reference adjustment plate (36) is fixedly connected to the side of the regular rectangular platform (1), and the other end is provided with a displacement adjustment groove (3611) extending along the Y direction. One end of the first locking device (37) passes through the displacement adjustment groove (3611) and is positioned and connected to the upper surface of the first mounting plate (31).

2. The angle adjustment mechanism for CNC external cylindrical grinding according to claim 1, characterized in that: One end of the reference adjustment plate (36) is provided with a reference block (362) extending along the X direction to the top of the first mounting plate (31). The two sides of the reference block (362) in the Y direction are reference surfaces. Both reference surfaces of the reference block (362) are parallel to the central axis of the straight rectangular platform (1). The measuring rod of the dial indicator (32) is set along the Y direction toward one of the reference surfaces. The alignment bolt (33) and the adjustment screw (34) are both set along the Y direction toward the other reference surface.

3. The angle adjustment mechanism for CNC external cylindrical grinding according to claim 2, characterized in that: The first mounting plate (31) is provided with a positioning clamp (312) on one side of the Y-axis direction. The positioning clamp (312) is through along the Y direction and has an open top. The sleeve outside the measuring rod of the dial indicator (32) is located inside the positioning clamp (312) and is locked in place by bolts at the top opening of the positioning clamp (312). The measuring rod of the dial indicator (32) extends along the Y direction to the reference surface on one side of the reference block (362).

4. The angle adjustment mechanism for CNC external cylindrical grinding according to claim 3, characterized in that: The upper surface of the first mounting plate (31) is provided with a downwardly recessed mounting groove (311), the positioning clamp (312) is installed in the mounting groove (311), and the measuring rod of the dial indicator (32) connected in the positioning clamp (312) and the adjusting screw (34) are located in the same horizontal plane.

5. The angle adjustment mechanism for CNC external cylindrical grinding according to claim 2, characterized in that: The first mounting plate (31) has a positioning plate (313) on the other side of the Y-axis direction. One end of the alignment bolt (33) passes through one end of the positioning plate (313) along the Y direction and abuts against the reference surface on the other side of the reference block (362) through the positioning reference medium (39) for zero-position alignment.

6. The angle adjustment mechanism for CNC external cylindrical grinding according to claim 5, characterized in that: One end of the adjusting screw (34) passes through the other end of the positioning plate (313) along the Y direction and cooperates with the reference surface at the end of the reference block (362). The connection position of the adjusting screw (34) relative to the positioning plate (313) is adjusted by rotation.

7. The angle adjustment mechanism for CNC external cylindrical grinding according to claim 6, characterized in that: The adjusting screw (34) and the dial indicator (32) are both located at the free end of the reference block (362) and are arranged opposite each other.

8. The angle adjustment mechanism for CNC external cylindrical grinding according to claim 1, characterized in that: It also includes a tension spring (35), the two ends of which are connected to the reference adjustment plate (36) and the first mounting plate (31), respectively.

9. The angle adjustment mechanism for CNC external cylindrical grinding according to claim 1, characterized in that: The first mounting plate (31) is slidably connected to the third worktable (S3) of the frame (S) along the X direction.

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