Spindle grinding machine positioning tool

Abstract

The invention is suitable for the technical field of grinding machine auxiliary tools, and provides a spindle grinding machine positioning tool which comprises a base, an annular mounting box fixed to the base, a clamping block fixed to a three-jaw chuck and concentric with the annular mounting box, and an annular plate concentrically fixed to one side of the clamping block. The positioning mechanisms comprise the first positioning mechanisms and the second positioning mechanisms, the first positioning mechanisms are arranged on the annular mounting box at equal intervals along the axis of the annular mounting box, and the second positioning mechanisms are mounted on the clamping blocks. According to the main shaft grinding machine positioning tool, the first positioning mechanism can rapidly and accurately center the two ends of the main shaft sleeve through the second positioning mechanism, centering clamping is achieved, meanwhile, the second positioning mechanism can avoid the phenomenon that the main shaft sleeve retreats inwards in the machining process, the stability of the main shaft sleeve is improved, machining errors are reduced, and machining efficiency is improved. The machining precision and the machining quality of the spindle sleeve are improved, and the defective rate and the reworking cost are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of auxiliary tooling for grinding machines, and in particular relates to a positioning tooling for a spindle grinding machine. Background Art

[0002] A grinder is a machine tool that uses abrasive tools to grind the surface of a workpiece. Most grinders use high-speed rotating grinding wheels for grinding. The spindle refers to the shaft that receives power from an engine or motor and transmits it to other parts. The spindle is equipped with a spindle sleeve, which is a transmission element used to realize the axial feed movement of the spindle. When processing the spindle sleeve, the grinder needs to grind its inner wall to ensure the assembly accuracy of its inner wall.

[0003] Before grinding, the spindle sleeve needs to be positioned and fixed using the positioning tooling on the grinding machine. The existing spindle grinder positioning tooling generally adopts a three-point centering structure, using the three-jaw chuck on the grinder to clamp one end of the spindle sleeve, and the three-point centering structure to center and clamp the other end of the spindle sleeve, thereby achieving the positioning of the spindle sleeve and facilitating the grinding head on the grinder to grind its inner wall.

[0004] The existing positioning tooling must be used in conjunction with a three-jaw chuck to fix the spindle sleeve. However, as the three-jaw chuck is used for a longer time, its clamping accuracy gradually decreases, resulting in the need to rely on the three-point centering structure to center one end of the spindle sleeve, and the positioning accuracy of the overall structure cannot be ensured. This situation will further lead to a decrease in the machining accuracy of the spindle sleeve, requiring re-grinding, thereby increasing the machining cost; in addition, since the three-jaw chuck only clamps the outer wall of the spindle sleeve, when the grinder grinds it, the impact force generated may cause one end of the spindle sleeve to retreat inward toward the three-jaw chuck, which will also have an adverse effect on the machining accuracy of the spindle sleeve, resulting in unsatisfactory machining accuracy.

[0005] Therefore, in view of the above situation, it is urgent to develop a spindle grinder positioning tooling to overcome the shortcomings in current practical applications. Summary of the invention

[0006] In view of the deficiencies in the prior art, an object of an embodiment of the present invention is to provide a spindle grinder positioning tool to solve the problems in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: A spindle grinder positioning tool, comprising a base, the base is fixed on the workbench of the grinder, an annular mounting box is fixed on the base, the annular mounting box is concentric with a clamping block fixed on a three-jaw chuck, the clamping block is circumferentially provided with a clamping groove matching with the three-jaw chuck jaws, an annular plate is concentrically fixed on one side of the clamping block, and further comprises: A positioning mechanism, the positioning mechanism comprising a first positioning mechanism and a second positioning mechanism, the first positioning mechanism being arranged on the annular mounting box at equal distances along the axis of the annular mounting box, the first positioning mechanism being used to position one end of the spindle sleeve located in the middle of the annular mounting box and drive it to move toward a direction close to the annular plate; The second positioning mechanism comprises a linkage component and a positioning component, the linkage component comprises a resistance cylinder, a moving column, a first spring and a third ring gear, the resistance cylinder is a truncated cone-shaped cylindrical structure, one end of the resistance cylinder is fixedly connected to one end of the moving column, the other end of the moving column passes through the annular plate and is slidably mounted on the clamping block, and the moving column and the resistance cylinder are both concentric with the clamping block, the first spring connected to the clamping block is fixed on the outer wall of the other end of the moving column, and the third ring gear is equidistantly distributed on the outer wall of the resistance cylinder along its axial direction, the third ring gear is meshed with one end of the positioning component, the positioning component is equidistantly and slidably mounted on one side of the annular plate along the axis of the annular plate, and the other end of the positioning component cooperates with the other end of the main shaft sleeve; The first positioning mechanism rotates to center and clamp one end of the spindle sleeve located in the middle of the annular mounting box and drives the positioned spindle sleeve to move in a direction close to the second positioning mechanism. When the spindle sleeve moves to contact with the inner wall of the interference cylinder, the spindle sleeve drives the moving column to slide on the clamping block through the interference cylinder, and the interference cylinder simultaneously drives the third annular gear thereon to move. The third annular gear drives one end of the positioning assembly to rotate in a direction close to the spindle sleeve and drives the other end to move in a direction away from the spindle sleeve. The positioning assembly achieves centering and clamping of the other end of the spindle sleeve by rotating in a direction close to the spindle sleeve.

[0008] As a further technical solution of the present invention, the positioning component includes: A moving block is slidably mounted in a moving groove distributed circumferentially on the annular plate, one side of the moving block being connected to an inner wall of the moving groove via a second spring; Rotating a rotating shaft mounted on the moving block; a second gear fixed to the middle of the rotating shaft, wherein the second gear is meshed with the third ring gear; Rotating arms fixed on both ends of the rotating shaft, the rotating arms being distributed on the outside of the abutment cylinder; and A rotating cylinder is installed on the rotating arm, and an arc plate is fixed on the outer wall of the rotating cylinder close to the main shaft sleeve.

[0009] As a further technical solution of the present invention, the rotating cylinder is rotatably mounted on the inner side of the rotating arm, and an elastic clamping strip connected to the rotating cylinder is fixed on the inner side of the rotating arm.

[0010] As a further technical solution of the present invention, the first positioning mechanism includes: A distance adjusting assembly installed in the annular installation box, wherein one end of the distance adjusting assembly extends to the outside of the annular installation box, and the other end of the distance adjusting assembly extends to the inside of the annular installation box; A U-shaped mounting bracket fixed to the other end of the pitch adjustment assembly; A moving assembly mounted on the U-shaped mounting frame, the moving assembly being equidistantly distributed on the inner side of the annular mounting box along the axis of the annular mounting box, and the moving assembly abutting against the outer wall of one end of the spindle sleeve located in the middle of the annular mounting box; and A drive control component is installed on a U-shaped mounting frame, wherein an output end of the drive control component is connected to a moving component.

[0011] As a further technical solution of the present invention, the distance adjustment component includes: A worm gear is rotatably mounted in the annular mounting box, wherein one end of the worm gear extends to the outside of the annular mounting box; A worm wheel mounted in the annular mounting box is rotated, and one side of the worm wheel is meshed with the other end of the worm; An annular seat is rotatably mounted in the annular mounting box through a mounting column, wherein the annular seat is provided with arc grooves equidistantly arranged in the circumferential direction, and the arc grooves are eccentric to the annular seat; a first annular gear fixed to the outer wall of the annular seat, wherein the first annular gear is meshed with the other side of the worm gear; A sliding post slidably engaged with the arc-shaped groove; and A connecting column is slidably mounted in the annular mounting box, one end of the connecting column is fixedly connected to the sliding column, and the other end of the connecting column extends to the inner side of the annular mounting box and is fixedly connected to the U-shaped mounting frame.

[0012] As a further technical solution of the present invention, the mobile component includes: Rotate the mounting shaft mounted on the U-shaped mounting bracket; A positioning pulley fixed in the middle of the mounting shaft; Connecting cylinders are respectively mounted on both ends of the mounting shaft, and the outer walls of the connecting cylinders are connected to the output end of the drive control assembly; and The hinged seat is installed on the connecting tube, and a telescopic member is installed between two adjacent hinged seats.

[0013] As a further technical solution of the present invention, the telescopic member adopts a telescopic structure composed of a telescopic column and a telescopic cylinder, and the telescopic column is slidably connected to the inner wall of the telescopic cylinder.

[0014] As a further technical solution of the present invention, the drive control component includes: A motor fixed to one side of a U-shaped mounting frame; a first gear fixed to an output end of the motor; and A second ring gear is fixed on an outer wall of a connecting cylinder, and the second ring gear is meshed with the first gear.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The first positioning mechanism firstly performs centering clamping on one end of the spindle sleeve located in the middle of the annular mounting box, so as to realize rapid and accurate centering of one end of the spindle sleeve, reduce the initial positioning error, shorten the positioning time, and improve the processing efficiency of the grinder. Then, the first positioning mechanism can drive the spindle sleeve to move toward the direction close to the second positioning mechanism by rotating. The spindle sleeve can trigger the second positioning mechanism to work by moving and contacting with the second positioning mechanism, so that the second positioning mechanism can realize centering clamping of the other end of the spindle sleeve, thereby realizing rapid positioning of the other end thereof, and can quickly position spindle sleeves of different sizes; At the same time, since the interference cylinder in the second positioning mechanism that interferes with the main shaft sleeve is a truncated cone-shaped cylindrical structure, the other end of the main shaft sleeve of different sizes can be fully located inside the interference cylinder and always interfere with its inner wall, and the grinding head on the grinding machine enters from one end of the main shaft sleeve and grinds the inside thereof. In this way, during the process of grinding the main shaft sleeve by the grinding head, the phenomenon of the main shaft sleeve retreating inward can be avoided, which not only improves the stability of the main shaft sleeve during the processing and reduces the processing error, but also improves the processing accuracy and processing quality of the main shaft sleeve and reduces the defective rate and rework cost.

[0016] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural schematic diagram of the first perspective of the spindle grinder positioning tooling provided in an embodiment of the present invention.

[0018] Figure 2 A structural schematic diagram of the second viewing angle of the spindle grinder positioning tooling provided in an embodiment of the present invention.

[0019] Figure 3 A schematic structural diagram of a partial cross-section of a spindle grinder positioning tooling from a third viewing angle provided in an embodiment of the present invention.

[0020] Figure 4 for Figure 3 The structural front view.

[0021] Figure 5 for Figure 2An enlarged view of the structure of the second positioning mechanism, annular plate and clamping block.

[0022] Figure 6 for Figure 5 A magnified view of the structure in the middle.

[0023] Figure 7 for Figure 3 A magnified view of the structure at B in the middle.

[0024] Figure 8 for Figure 2 A magnified view of the structure at center C.

[0025] Figure numerals: 1-base, 2-annular mounting box, 3-first positioning mechanism, 31-pitch adjustment assembly, 311-worm, 312-worm wheel, 313-first annular gear, 314-annular seat, 315-mounting column, 316-arc groove, 317-sliding column, 318-connecting column, 32-U-shaped mounting frame, 33-moving assembly, 331-positioning pulley, 332-mounting shaft, 333-connecting cylinder, 334-hinged seat, 335-telescopic member, 34-drive control assembly, 341-motor , 342-first gear, 343-second ring gear, 4-spindle sleeve, 5-second positioning mechanism, 51-linkage assembly, 511-contact cylinder, 512-moving column, 513-first spring, 514-third ring gear, 52-positioning assembly, 521-moving block, 522-second spring, 523-second gear, 524-rotating shaft, 525-rotating arm, 526-rotating cylinder, 527-arc plate, 6-ring plate, 61-moving groove, 7-clamping block, 71-clamping groove. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0028] like Figures 1 to 6 As shown, a spindle grinder positioning fixture provided as an embodiment of the present invention includes a base 1, the base 1 is fixed on the workbench of the grinder, an annular mounting box 2 is fixed on the base 1, the annular mounting box 2 is concentric with a clamping block 7 fixed on a three-jaw chuck, the clamping block 7 is circumferentially provided with a clamping groove 71 that matches the clamping jaws of the three-jaw chuck, an annular plate 6 is concentrically fixed on one side of the clamping block 7, and further includes: A positioning mechanism, the positioning mechanism includes a first positioning mechanism 3 and a second positioning mechanism 5, the first positioning mechanism 3 is equidistantly arranged on the annular installation box 2 along the axis of the annular installation box 2, and the first positioning mechanism 3 is used to position one end of the spindle sleeve 4 located in the middle of the annular installation box 2 and drive it to move toward the direction close to the annular plate 6; The second positioning mechanism 5 includes a linkage component 51 and a positioning component 52, the linkage component 51 includes a resistance cylinder 511, a moving column 512, a first spring 513 and a third ring gear 514, the resistance cylinder 511 is a truncated cone-shaped cylindrical structure, one end of the resistance cylinder 511 is fixedly connected to one end of the moving column 512, the other end of the moving column 512 passes through the annular plate 6 and is slidably mounted on the clamping block 7, and the moving column 512 and the resistance cylinder 511 are both concentric with the clamping block 7, the first spring 513 connected to the clamping block 7 is fixed on the outer wall of the other end of the moving column 512, the third ring gear 514 is equidistantly distributed on the outer wall of the resistance cylinder 511 along its axial direction, the third ring gear 514 is meshed with one end of the positioning component 52, the positioning component 52 is equidistantly and slidably mounted on one side of the annular plate 6 along the axis of the annular plate 6, and the other end of the positioning component 52 cooperates with the other end of the spindle sleeve 4.

[0029] In this embodiment, the first positioning mechanism 3 firstly performs centering clamping on one end of the spindle sleeve 4 located in the middle of the annular installation box 2, so as to realize rapid and accurate centering of one end of the spindle sleeve 4, reduce the initial positioning error, shorten the positioning time, and improve the processing efficiency of the grinder. Then, the first positioning mechanism 3 can drive the spindle sleeve 4 to move toward the direction close to the second positioning mechanism 5 by rotating. When the main shaft sleeve 4 moves to contact with the inner wall of the abutment cylinder 511, the main shaft sleeve 4 drives the moving column 512 to slide on the clamping block 7 through the abutment cylinder 511, and the abutment cylinder 511 drives the third ring gear 514 thereon to move at the same time, so as to ensure that when the main shaft sleeve 4 can move to the predetermined position, more accurate positioning can be achieved by contacting the inner wall. At this time, the first spring 513 is in a squeezed state, and the first spring 513 can absorb part of the vibration in the process of positioning the main shaft sleeve 4, thereby improving the stability of the positioning tooling; Due to the special shape of the abutment cylinder 511, when it and the third ring gear 514 thereon move, not only can one end of the positioning assembly 52 be driven to rotate in the direction close to the spindle sleeve 4, thereby realizing centering clamping of the other end of the spindle sleeve 4, thereby realizing rapid positioning of the other end thereof, and being able to quickly position spindle sleeves 4 of different sizes, but also the other end of the positioning assembly 52 can be driven to move in the direction away from the spindle sleeve 4, while reducing the space occupied by the overall structure of the second positioning mechanism 5, it can be ensured that one end of the positioning assembly 52 will not interfere with the abutment cylinder 511 during the rotation process, so that the positioning assembly 52 can quickly and effectively position and center clamp the other end of the spindle sleeve 4, thereby reducing the structural complexity and occupied space of the positioning tooling, and improving the flexibility and adaptability of the positioning tooling; At the same time, due to the special shape of the interference cylinder 511, the other end of the spindle sleeve 4 of different sizes can be fully located inside the interference cylinder 511 and always in conflict with its inner wall, and the grinding head on the grinding machine enters from one end of the spindle sleeve 4 and grinds the inside thereof. In this way, during the process of grinding the spindle sleeve 4 by the grinding head, the spindle sleeve 4 can be prevented from retreating inwards, which not only improves the stability of the spindle sleeve 4 during the processing and reduces the processing error, but also improves the processing accuracy and processing quality of the spindle sleeve 4 and reduces the defective rate and rework cost.

[0030] In a preferred embodiment, soft pads are distributed circumferentially on the inner wall of the interference cylinder 511. In this way, while ensuring the stability of the main shaft sleeve 4, the damage to the outer wall of the main shaft sleeve 4 can be reduced, thereby reducing the defective rate and rework cost. The taper of the interference cylinder 511 and the distribution quantity and specification size of the third ring gear 514 thereon can be adjusted according to actual production needs. The taper size affects the moving speed of the positioning assembly 52, and the distribution quantity and specification size of the third ring gear 514 affect the rotation speed of the positioning assembly 52.

[0031] like Figures 2 to 6As shown, as a preferred embodiment of the present invention, the positioning assembly 52 includes a moving block 521, a second spring 522, a second gear 523, a rotating shaft 524, a rotating arm 525, a rotating cylinder 526 and an arc plate 527. The moving block 521 is slidably installed in a circumferentially distributed moving groove 61 on the annular plate 6. One side of the moving block 521 is connected to the inner wall of the moving groove 61 through the second spring 522. A rotating shaft 524 is rotatably installed on the moving block 521. A second gear 523 meshing with the third ring gear 514 is fixed in the middle of the rotating shaft 524. Rotating arms 525 are fixed at both ends of the rotating shaft 524. The rotating arms 525 are distributed on the outside of the abutting cylinder 511. A rotating cylinder 526 is installed at one end of the rotating arm 525. An arc plate 527 is fixed on the outer wall of the rotating cylinder 526 close to the main shaft sleeve 4.

[0032] like Figures 2 to 6 As shown, as a preferred embodiment of the present invention, the rotating cylinder 526 is rotatably installed on the inner side of the rotating arm 525, and the inner side of the rotating arm 525 is fixed with an elastic clamp connected to the rotating cylinder 526, so that after the rotating cylinder 526 rotates, the elastic clamp can drive the rotating cylinder 526 to quickly rotate back to the initial state through its own elastic force, which not only makes it convenient for the arc plate 527 to fully contact the outer wall of the spindle sleeve 4, but also makes it convenient to quickly position and center the spindle sleeve 4 for the next processing.

[0033] In this embodiment, when the abutment cylinder 511 and the third ring gear 514 thereon are moving, the third ring gear 514 can not only drive the second gear 523 to rotate, but also drive the moving block 521 to move in the moving groove 61 through the second gear 523; The second gear 523 drives the rotating shaft 524 to rotate, and the rotating shaft 524 drives the rotating arm 525 to rotate in the direction close to the spindle sleeve 4, and the rotating arm 525 drives the rotating cylinder 526 and the arc plate 527 thereon to rotate in the direction close to the spindle sleeve 4; when the arc plate 527 rotates to conflict with the outer wall of the spindle sleeve 4, it can drive the rotating cylinder 526 to deflect on the rotating arm 525, so that the elastic clip is in a compressed or stretched state, and then the arc plate 527 can fully conflict with the outer wall of the spindle sleeve 4, so as to realize the other end thereof to be quickly and effectively positioned, improve the stability of the spindle sleeve 4, and at the same time improve the processing efficiency and processing quality of the spindle sleeve 4; Since the interference cylinder 511 is a truncated cone-shaped cylindrical structure, the third ring gear 514 can push the second gear 523 to move away from the spindle sleeve 4 when moving. The second gear 523 can push the rotating arm 525 and the moving block 521 to move away from the spindle sleeve 4 through the rotating shaft 524. At this time, the second spring 522 is in a compressed state. While reducing the space occupied by the overall structure of the second positioning mechanism 5, it can be ensured that the rotating arm 525 and the rotating cylinder 526 and the arc plate 527 thereon will not interfere with the interference cylinder 511 during the rotation process, so that the arc plate 527 can quickly and effectively position and center the other end of the spindle sleeve 4, reducing the structural complexity and occupied space of the positioning tooling, and improving the flexibility and adaptability of the positioning tooling.

[0034] In a preferred embodiment, the rotating arm 525 preferably adopts an L-shaped rod structure.

[0035] like Figures 2 to 8 As shown, as a preferred embodiment of the present invention, the first positioning mechanism 3 includes a distance adjusting component 31, a U-shaped mounting frame 32, a moving component 33 and a drive control component 34, the distance adjusting component 31 is installed in the annular mounting box 2, one end of the distance adjusting component 31 extends to the outside of the annular mounting box 2, the other end of the distance adjusting component 31 extends to the inside of the annular mounting box 2 and is fixedly connected to the U-shaped mounting frame 32, the moving component 33 and the drive control component 34 are installed on the U-shaped mounting frame 32, the moving component 33 is equidistantly distributed on the inside of the annular mounting box 2 along the axis of the annular mounting box 2, the moving component 33 conflicts with the outer wall of one end of the spindle sleeve 4 located in the middle of the annular mounting box 2, and the output end of the drive control component 34 is connected to the moving component 33.

[0036] In this embodiment, first, the distance adjustment component 31 drives the U-shaped mounting frame 32 to move toward the direction close to the spindle sleeve 4 by rotating, and the U-shaped mounting frame 32 drives the moving component 33 thereon to move toward the direction close to the spindle sleeve 4, so that the moving component 33 can center and clamp one end of the spindle sleeve 4 located in the middle of the annular mounting box 2, thereby realizing fast and accurate centering of one end of the spindle sleeve 4, reducing the initial positioning error, reducing the processing error caused by eccentricity, and at the same time shortening the positioning time, thereby improving the processing efficiency of the grinder; Next, the drive control component 34 can drive the moving component 33 to rotate, and the moving component 33 can drive the spindle sleeve 4 positioned thereon to move toward the direction close to the second positioning mechanism 5, so that the spindle sleeve 4 conflicts with the second positioning mechanism 5 and triggers the second positioning mechanism 5 to quickly position the other end of the spindle sleeve 4, thereby improving the accuracy and consistency of positioning at both ends of the spindle sleeve 4, ensuring the stability and accuracy of the spindle sleeve 4 during the processing, and reducing processing defects caused by vibration or position deviation.

[0037] like Figures 2 to 8 As shown in the figure, as a preferred embodiment of the present invention, the pitch adjustment assembly 31 includes a worm 311, a worm wheel 312, a first ring gear 313, an annular seat 314, a mounting post 315, an arc groove 316, a sliding post 317 and a connecting post 318. The worm 311 is rotatably mounted in the annular mounting box 2, one end of the worm 311 extends to the outside of the annular mounting box 2, and the other end of the worm 311 is meshed with a worm wheel 312 rotatably mounted in the annular mounting box 2. The worm wheel 312 is fixed to the outside of the annular seat 314. The first ring gear 313 on the wall is meshed, and the annular seat 314 is rotatably installed in the annular installation box 2 through the installation column 315. The annular seat 314 is circumferentially equidistantly provided with arc grooves 316 that slide with one end of the sliding column 317. The arc groove 316 is eccentric to the annular seat 314. The other end of the sliding column 317 is fixedly connected to the connecting column 318. The connecting column 318 is slidably installed in the annular installation box 2. The connecting column 318 extends to the inner side of the annular installation box 2 and is fixedly connected to the U-shaped mounting frame 32.

[0038] In this embodiment, the worm 311 drives the worm wheel 312 to rotate, the worm wheel 312 drives the first ring gear 313 to rotate, and the first ring gear 313 drives the annular seat 314 and the arc groove 316 thereon to rotate. The arc groove 316 can drive the sliding column 317 to move in the direction close to the spindle sleeve 4 through the eccentric setting and rotation. The sliding column 317 drives the connecting column 318 to move in the direction close to the spindle sleeve 4, and the connecting column 318 drives the U-shaped mounting frame 32 to move in the direction close to the spindle sleeve 4. The U-shaped mounting frame 32 drives the moving assembly 33 thereon to move in the direction close to the spindle sleeve 4, so that the moving assembly 33 can center and clamp one end of the spindle sleeve 4 located in the middle of the annular mounting box 2, thereby realizing fast and accurate centering of one end of the spindle sleeve 4, reducing the initial positioning error, reducing the processing error caused by eccentricity, and at the same time shortening the positioning time, thereby improving the processing efficiency of the grinder.

[0039] In a preferred embodiment, the installation direction of the connecting column 318 is perpendicular to the outer wall of the main shaft sleeve 4, so as to ensure that the first positioning mechanism 3 can realize the centering clamping and centering positioning of the main shaft sleeve 4, thereby reducing the processing error caused by eccentricity; and the annular mounting box 2 can limit the movement state of the connecting column 318, so that the connecting column 318 can only move when the arc groove 316 rotates. At the same time, the transmission relationship between the worm 311 and the worm wheel 312 has a certain self-locking property, which can further ensure the installation stability of the main shaft sleeve 4, avoid the occurrence of deviation during processing, and further improve its processing accuracy and efficiency.

[0040] like Figures 2 to 8 As shown, as a preferred embodiment of the present invention, the moving component 33 includes a positioning pulley 331, a mounting shaft 332, a connecting cylinder 333, an articulated seat 334 and a telescopic member 335. The positioning pulley 331 is rotatably mounted in the U-shaped mounting frame 32 via the mounting shaft 332. Connecting cylinders 333 are mounted at both ends of the mounting shaft 332. An articulated seat 334 is mounted at one end of the connecting cylinder 333. The outer wall of one of the connecting cylinders 333 is connected to the output end of the drive control component 34. A telescopic member 335 is mounted between two adjacent articulated seats 334.

[0041] like Figures 2 to 8 As shown, as a preferred embodiment of the present invention, the telescopic member 335 preferably adopts a telescopic structure composed of a telescopic column and a telescopic cylinder, and the telescopic column is slidably connected to the inner wall of the telescopic cylinder, so that when the telescopic column or the telescopic cylinder rotates, it can drive the telescopic cylinder or telescopic column matched with it to rotate synchronously, thereby realizing the rotation linkage of multiple positioning pulleys 331.

[0042] In this embodiment, the U-shaped mounting frame 32 drives the positioning pulley 331 to move toward the direction close to the spindle sleeve 4, and the positioning pulley 331 drives the connecting tube 333 and the hinge seat 334 to move toward the direction close to the spindle sleeve 4 through the mounting shaft 332. During the movement of two adjacent hinge seats 334, the distance between them is continuously reduced. At this time, the telescopic member 335 is in a retracted state. The positioning pulley 331 can realize fast and accurate centering of one end of the spindle sleeve 4 by moving, that is, fast positioning of the spindle sleeve 4 is realized, the initial positioning error is reduced, and the processing error caused by eccentricity is reduced. At the same time, the positioning time is shortened, and the processing efficiency of the grinder is improved.

[0043] In a preferred embodiment, the articulated seat 334 can be replaced by a universal joint. Regardless of whether the angle between the telescopic member 335 and the connecting tube 333 is increased or decreased, the drive control assembly 34 can transmit the torque to the telescopic member 335 through the connecting tube 333 and the articulated seat 334, and then transmit it to other positioning pulleys 331 through the telescopic member 335.

[0044] like Figures 2 to 8 As shown, as a preferred embodiment of the present invention, the drive control component 34 includes a motor 341, a first gear 342 and a second ring gear 343, the motor 341 is fixed on one side of a U-shaped mounting frame 32, and the first gear 342 is fixed on the output end of the motor 341, and the first gear 342 is meshed with a second ring gear 343 fixed on the outer wall of a connecting tube 333.

[0045] In this embodiment, the motor 341 drives the first gear 342 to rotate, the first gear 342 drives the second ring gear 343 to rotate, the second ring gear 343 drives a connecting tube 333 to rotate, and a connecting tube 333 simultaneously drives the installation shaft 332 and the hinge seat 334 connected thereto to rotate, the installation shaft 332 simultaneously drives the connecting tube 333 and the positioning pulley 331 at its other end to rotate, and an hinge seat 334 drives the hinge seat 334 adjacent to it to rotate through the telescopic member 335, so that the multiple positioning pulleys 331 that are in conflict with the outer wall of the main shaft sleeve 4 rotate synchronously, and the multiple positioning pulleys 331 can drive the main shaft sleeve 4 to move in the direction close to the second positioning mechanism 5 by rotating, so that the main shaft sleeve 4 conflicts with the second positioning mechanism 5 and triggers the second positioning mechanism 5 to quickly position its other end, thereby improving the accuracy and consistency of the positioning of the two ends of the main shaft sleeve 4, ensuring the stability and accuracy of the main shaft sleeve 4 during the processing, and reducing the processing defects caused by vibration or position deviation.

[0046] The working principle of the present invention is: First, the worm 311 drives the worm wheel 312 to rotate, the worm wheel 312 drives the first ring gear 313 to rotate, the first ring gear 313 drives the ring seat 314 and the arc groove 316 thereon to rotate, the arc groove 316 can drive the sliding column 317 to move toward the direction close to the spindle sleeve 4 through the eccentric setting and rotation, the sliding column 317 drives the connecting column 318 to move toward the direction close to the spindle sleeve 4, and the connecting column 318 drives the U-shaped mounting frame 32 to move toward the direction close to the spindle sleeve 4, and the U-shaped The mounting frame 32 drives the positioning leather wheel 331 to move toward the direction close to the main shaft sleeve 4, and the positioning leather wheel 331 drives the connecting tube 333 and the hinge seat 334 to move toward the direction close to the main shaft sleeve 4 through the mounting shaft 332. During the movement, the distance between the two adjacent hinge seats 334 is constantly reduced. At this time, the telescopic member 335 is in a contracted state. The positioning leather wheel 331 can realize fast and accurate centering of one end of the main shaft sleeve 4 by moving, that is, realize fast positioning of the main shaft sleeve 4. Then, the motor 341 drives the first gear 342 to rotate, the first gear 342 drives the second ring gear 343 to rotate, the second ring gear 343 drives a connecting cylinder 333 to rotate, and the connecting cylinder 333 drives the installation shaft 332 and the hinge seat 334 connected thereto to rotate at the same time, the installation shaft 332 drives the connecting cylinder 333 and the positioning leather wheel 331 at the other end thereof to rotate at the same time, and an hinge seat 334 drives the hinge seat 334 adjacent thereto to rotate through the telescopic member 335, so that the multiple positioning leather wheels 331 that conflict with the outer wall of the main shaft sleeve 4 rotate synchronously, and the multiple positioning leather wheels 331 can drive the main shaft sleeve 4 to move toward the direction close to the second positioning mechanism 5 by rotating; When the main shaft sleeve 4 moves to contact with the inner wall of the abutment cylinder 511, the main shaft sleeve 4 drives the moving column 512 to slide on the clamping block 7 through the abutment cylinder 511, and the abutment cylinder 511 drives the third ring gear 514 thereon to move at the same time, so as to ensure that when the main shaft sleeve 4 can move to the predetermined position, more accurate positioning can be achieved by contacting the inner wall. At this time, the first spring 513 is in a squeezed state, and the first spring 513 can absorb part of the vibration in the process of positioning the main shaft sleeve 4, thereby improving the stability of the positioning tooling; When the interference cylinder 511 and the third ring gear 514 thereon are moving, the third ring gear 514 can not only drive the second gear 523 to rotate, but also drive the moving block 521 to move in the moving groove 61 through the second gear 523, and the second gear 523 drives the rotating shaft 524 to rotate, and the rotating shaft 524 drives the rotating arm 525 to rotate in the direction close to the spindle sleeve 4, and the rotating arm 525 drives the rotating cylinder 526 and the arc plate 527 thereon to rotate in the direction close to the spindle sleeve 4; when the arc plate 527 rotates to conflict with the outer wall of the spindle sleeve 4, it can drive the rotating cylinder 526 to deflect on the rotating arm 525, so that the elastic clip is in a compressed or stretched state, and then the arc plate 527 can fully conflict with the outer wall of the spindle sleeve 4, so as to achieve rapid and effective positioning of the other end thereof; Since the abutment cylinder 511 is a truncated cone-shaped cylinder structure, the third ring gear 514 can push the second gear 523 to move away from the spindle sleeve 4 when moving, and the second gear 523 can push the rotating arm 525 and the moving block 521 to move away from the spindle sleeve 4 through the rotating shaft 524. At this time, the second spring 522 is in a compressed state. Under the condition of reducing the space occupied by the overall structure of the second positioning mechanism 5, it can be ensured that the rotating arm 525 and the rotating cylinder 526 and the arc plate 527 thereon can rotate without interfering with the abutment cylinder 511, so that the arc plate 527 can quickly and effectively position and center the other end of the spindle sleeve 4. At the same time, due to the special shape of the abutment tube 511, the other end of the spindle sleeve 4 of different sizes can be fully located inside the abutment tube 511 and always abut against its inner wall, and the grinding head on the grinding machine enters from one end of the spindle sleeve 4 and grinds the inside thereof, so that the spindle sleeve 4 can be prevented from retreating inwards during the grinding process of the grinding head on the spindle sleeve 4; The above is the working principle of the spindle grinder positioning tooling.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spindle grinder positioning tool, comprising a base, the base is fixed on the workbench of the grinder, an annular mounting box is fixed on the base, the annular mounting box is concentric with a clamping block fixed on a three-jaw chuck, the clamping block is circumferentially provided with a clamping groove that matches the three-jaw chuck jaws, an annular plate is concentrically fixed on one side of the clamping block, and the characteristics are: Also includes: A positioning mechanism, the positioning mechanism comprising a first positioning mechanism and a second positioning mechanism, the first positioning mechanism being arranged on the annular mounting box at equal distances along the axis of the annular mounting box, the first positioning mechanism being used to position one end of the spindle sleeve located in the middle of the annular mounting box and drive it to move toward a direction close to the annular plate; The second positioning mechanism comprises a linkage component and a positioning component, the linkage component comprises a resistance cylinder, a moving column, a first spring and a third ring gear, the resistance cylinder is a truncated cone-shaped cylindrical structure, one end of the resistance cylinder is fixedly connected to one end of the moving column, the other end of the moving column passes through the annular plate and is slidably mounted on the clamping block, and the moving column and the resistance cylinder are both concentric with the clamping block, the first spring connected to the clamping block is fixed on the outer wall of the other end of the moving column, and the third ring gear is equidistantly distributed on the outer wall of the resistance cylinder along its axial direction, the third ring gear is meshed with one end of the positioning component, the positioning component is equidistantly and slidably mounted on one side of the annular plate along the axis of the annular plate, and the other end of the positioning component cooperates with the other end of the main shaft sleeve; The first positioning mechanism rotates to center and clamp one end of the spindle sleeve located in the middle of the annular mounting box and drives the positioned spindle sleeve to move in a direction close to the second positioning mechanism. When the spindle sleeve moves to contact with the inner wall of the interference cylinder, the spindle sleeve drives the moving column to slide on the clamping block through the interference cylinder, and the interference cylinder simultaneously drives the third annular gear thereon to move. The third annular gear drives one end of the positioning assembly to rotate in a direction close to the spindle sleeve and drives the other end to move in a direction away from the spindle sleeve. The positioning assembly achieves centering and clamping of the other end of the spindle sleeve by rotating in a direction close to the spindle sleeve.

2. The spindle grinder positioning fixture according to claim 1, characterized in that: The positioning component comprises: A moving block is slidably mounted in a moving groove distributed circumferentially on the annular plate, one side of the moving block being connected to an inner wall of the moving groove via a second spring; Rotating a rotating shaft mounted on the moving block; a second gear fixed to the middle of the rotating shaft, wherein the second gear is meshed with the third ring gear; Rotating arms fixed on both ends of the rotating shaft, the rotating arms being distributed on the outside of the abutment cylinder; and A rotating cylinder is installed on the rotating arm, and an arc plate is fixed on the outer wall of the rotating cylinder close to the main shaft sleeve.

3. The spindle grinder positioning fixture according to claim 2, characterized in that: The rotating cylinder is rotatably mounted on the inner side of the rotating arm, and an elastic clamping strip connected to the rotating cylinder is fixed on the inner side of the rotating arm.

4. The spindle grinder positioning fixture according to claim 1, characterized in that: The first positioning mechanism comprises: A distance adjusting assembly installed in the annular installation box, wherein one end of the distance adjusting assembly extends to the outside of the annular installation box, and the other end of the distance adjusting assembly extends to the inside of the annular installation box; A U-shaped mounting bracket fixed to the other end of the pitch adjustment assembly; A moving assembly mounted on the U-shaped mounting frame, the moving assembly being equidistantly distributed on the inner side of the annular mounting box along the axis of the annular mounting box, and the moving assembly abutting against the outer wall of one end of the spindle sleeve located in the middle of the annular mounting box; and A drive control component is installed on a U-shaped mounting frame, wherein an output end of the drive control component is connected to a moving component.

5. The spindle grinder positioning fixture according to claim 4, characterized in that: The distance adjustment component comprises: A worm gear is rotatably mounted in the annular mounting box, wherein one end of the worm gear extends to the outside of the annular mounting box; A worm wheel mounted in the annular mounting box is rotated, and one side of the worm wheel is meshed with the other end of the worm; An annular seat is rotatably mounted in the annular mounting box through a mounting column, wherein the annular seat is provided with arc grooves equidistantly arranged in the circumferential direction, and the arc grooves are eccentric to the annular seat; a first annular gear fixed to the outer wall of the annular seat, wherein the first annular gear is meshed with the other side of the worm gear; A sliding post slidably engaged with the arc-shaped groove; and A connecting column is slidably mounted in the annular mounting box, one end of the connecting column is fixedly connected to the sliding column, and the other end of the connecting column extends to the inner side of the annular mounting box and is fixedly connected to the U-shaped mounting frame.

6. The spindle grinder positioning fixture according to claim 4, characterized in that: The mobile assembly comprises: Rotate the mounting shaft mounted on the U-shaped mounting bracket; A positioning pulley fixed in the middle of the mounting shaft; Connecting cylinders are respectively mounted on both ends of the mounting shaft, and the outer walls of the connecting cylinders are connected to the output end of the drive control assembly; and The hinged seat is installed on the connecting tube, and a telescopic member is installed between two adjacent hinged seats.

7. The spindle grinder positioning fixture according to claim 6, characterized in that: The telescopic member adopts a telescopic structure composed of a telescopic column and a telescopic cylinder, and the telescopic column is slidably connected to the inner wall of the telescopic cylinder.

8. The spindle grinder positioning fixture according to claim 6, characterized in that: The drive control component comprises: A motor fixed to one side of a U-shaped mounting frame; a first gear fixed to an output end of the motor; and A second ring gear is fixed on an outer wall of a connecting cylinder, and the second ring gear is meshed with the first gear.

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