A positioning tooling for a spindle grinding machine

Abstract

The present invention is applicable to the technical field of grinding machine auxiliary tooling, and provides a positioning tooling for a spindle grinding machine, which includes a base. An annular installation box is fixed on the base, and the annular installation box is concentric with a clamping block fixed on a three-jaw chuck. A circular plate is concentrically fixed on one side of the clamping block. The positioning tooling further includes: a positioning mechanism, which includes a first positioning mechanism and a second positioning mechanism. The first positioning mechanism is arranged on the annular installation box at equal intervals along the axis of the annular installation box, and the second positioning mechanism is installed on the clamping block. In the positioning tooling for the spindle grinding machine of the present invention, the first positioning mechanism can quickly and accurately center the two ends of the spindle sleeve through the second positioning mechanism to achieve centering clamping. At the same time, the second positioning mechanism can prevent the spindle sleeve from retracting inward during processing, improve the stability of the spindle sleeve, reduce processing errors, improve the processing accuracy and quality of the spindle sleeve, and reduce the defective rate and rework cost.

Description

Technical Field

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

[0002] A grinding machine is a machine tool that uses a grinding tool to grind the surface of a workpiece. Most grinding machines use a high-speed rotating grinding wheel for grinding. The spindle refers to the shaft that receives power from an engine or a motor and transmits it to other components. A spindle sleeve is installed on the spindle, and the spindle sleeve is a transmission component used to achieve the axial feed movement of the spindle. When the spindle sleeve is being processed, the grinding machine needs to grind its inner wall to ensure the assembly accuracy of its inner wall.

[0003] Before the spindle sleeve is ground, it needs to be positioned and fixed using a positioning tooling on the grinding machine. The existing positioning tooling for spindle grinding machines generally adopts a three-point centering structure. The three-jaw chuck on the grinding machine is used to clamp one end of the spindle sleeve, and the three-point centering structure is used to center and clamp the other end of the spindle sleeve, thereby realizing the positioning of the spindle sleeve and facilitating the grinding head on the grinding machine 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 usage time of the three-jaw chuck increases, its clamping accuracy gradually decreases, resulting in only being able to rely on the three-point centering structure to center one end of the spindle sleeve, and it is impossible to ensure the positioning accuracy of the overall structure. This situation will further lead to a decrease in the machining accuracy of the spindle sleeve and requires re-grinding, thereby increasing the processing cost. In addition, since the three-jaw chuck only clamps the outer wall of the spindle sleeve, when the grinding machine grinds it, the impact force generated may cause one end of the spindle sleeve to retract inward towards the three-jaw chuck direction, which will also have an adverse impact on the machining accuracy of the spindle sleeve, making the machining accuracy unsatisfactory.

[0005] Therefore, in view of the above current situation, there is an urgent need to develop a positioning tooling for a spindle grinding machine to overcome the deficiencies in current practical applications. Summary of the Invention

[0006] Aiming at the deficiencies of the existing technology, the purpose of the embodiment of the present invention is to provide a positioning tooling for a spindle grinding machine to solve the problems in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A positioning tooling for a spindle grinding machine includes a base, the base is fixed on the workbench of the grinding machine, a circular installation box is fixed on the base, the circular installation 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 jaws of the three-jaw chuck, and a circular plate is concentrically fixed on one side of the clamping block. The positioning tooling further includes:

[0009] 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;

[0010] 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;

[0011] 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.

[0012] As a further technical solution of the present invention, the positioning component includes:

[0013] 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;

[0014] Rotating a rotating shaft mounted on the moving block;

[0015] a second gear fixed to the middle of the rotating shaft, wherein the second gear is meshed with the third ring gear;

[0016] Rotating arms fixed on both ends of the rotating shaft, the rotating arms being distributed on the outside of the abutment cylinder; and

[0017] 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.

[0018] As a further technical solution of the present invention, the rotating cylinder is rotatably installed inside the rotating arm, and an elastic clamping strip connected to the rotating cylinder is fixed inside the rotating arm.

[0019] As a further technical solution of the present invention, the first positioning mechanism includes:

[0020] A distance adjusting component installed inside the annular installation box, one end of the distance adjusting component extends outside the annular installation box, and the other end of the distance adjusting component extends inside the annular installation box;

[0021] A U-shaped mounting bracket fixed to the other end of the distance adjusting component;

[0022] A moving component installed on the U-shaped mounting bracket, the moving components are equidistantly distributed along the axis of the annular installation box inside the annular installation box, and the moving components are in contact with the outer wall of one end of the main shaft sleeve located in the middle of the annular installation box; and

[0023] A driving and controlling component installed on the U-shaped mounting bracket, the output end of the driving and controlling component is connected to the moving component.

[0024] As a further technical solution of the present invention, the distance adjusting component includes:

[0025] A worm rotatably installed inside the annular installation box, one end of the worm extends outside the annular installation box;

[0026] A worm wheel rotatably installed inside the annular installation box, one side of the worm wheel meshes with the other end of the worm;

[0027] An annular seat rotatably installed inside the annular installation box through a mounting post, arc-shaped grooves are circumferentially and equidistantly formed on the annular seat, and the arc-shaped grooves are eccentric to the annular seat;

[0028] A first annular gear fixed to the outer wall of the annular seat, the first annular gear meshes with the other side of the worm wheel;

[0029] A sliding column slidably matched with the arc-shaped groove; and

[0030] A connecting column slidably installed inside the annular installation box, one end of the connecting column is fixedly connected to the sliding column, and the other end of the connecting column extends inside the annular installation box and is fixedly connected to the U-shaped mounting bracket.

[0031] As a further technical solution of the present invention, the moving component includes:

[0032] A mounting shaft rotatably installed on the U-shaped mounting bracket;

[0033] A positioning leather wheel fixed to the middle of the mounting shaft;

[0034] 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

[0035] The hinged seat is installed on the connecting tube, and a telescopic member is installed between two adjacent hinged seats.

[0036] 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.

[0037] As a further technical solution of the present invention, the drive control component includes:

[0038] A motor fixed to one side of a U-shaped mounting frame;

[0039] a first gear fixed to an output end of the motor; and

[0040] 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.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] 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.

[0043] 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;

[0044] 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. This 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.

[0045] To more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Description of the Drawings

[0046] Figure 1 It is a schematic structural diagram of the positioning tooling of the spindle grinding machine provided by the embodiment of the present invention from the first perspective.

[0047] Figure 2 It is a schematic structural diagram of the positioning tooling of the spindle grinding machine provided by the embodiment of the present invention from the second perspective.

[0048] Figure 3 It is a schematic structural diagram of a partial cross-section of the positioning tooling of the spindle grinding machine provided by the embodiment of the present invention from the third perspective.

[0049] Figure 4 For Figure 3 the front structural view.

[0050] Figure 5 For Figure 2 the enlarged structural view of the second positioning mechanism, the annular plate and the clamping block in

[0051] Figure 6 For Figure 5 the enlarged view of the structure at position A in

[0052] Figure 7 For Figure 3 the enlarged view of the structure at position B in

[0053] Figure 8 For Figure 2 the enlarged view of the structure at position C in

[0054] Reference numerals: 1 - base, 2 - annular installation box, 3 - first positioning mechanism, 31 - distance adjustment component, 311 - worm, 312 - worm gear, 313 - first annular gear, 314 - annular seat, 315 - installation column, 316 - arc groove, 317 - sliding column, 318 - connecting column, 32 - U-shaped installation frame, 33 - moving component, 331 - positioning leather wheel, 332 - installation shaft, 333 - connecting cylinder, 334 - hinge seat, 335 - telescopic member, 34 - driving and controlling component, 341 - motor, 342 - first gear, 343 - second annular gear, 4 - spindle sleeve, 5 - second positioning mechanism, 51 - linkage component, 511 - abutting cylinder, 512 - moving column, 513 - first spring, 514 - third annular gear, 52 - positioning component, 521 - moving block, 522 - second spring, 523 - second gear, 524 - rotating shaft, 525 - rotating arm, 526 - rotating cylinder, 527 - arc plate, 6 - annular plate, 61 - moving groove, 7 - clamping block, 71 - clamping groove. Detailed Embodiments

[0055] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to 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 used to limit the present invention.

[0056] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0057] As Figures 1 to 6 shown, as a positioning tooling for a spindle grinding machine provided in an embodiment of the present invention, it includes a base 1, the base 1 is fixed on the workbench of the grinding machine, a ring-shaped mounting box 2 is fixed on the base 1, the ring-shaped mounting box 2 is concentric with a clamping block 7 fixed on a three-jaw chuck, a clamping groove 71 matching with the jaws of the three-jaw chuck is circumferentially formed on the clamping block 7, and a ring plate 6 is concentrically fixed on one side of the clamping block 7. It further includes:

[0058] 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 ring-shaped mounting box 2 along the axis of the ring-shaped mounting box 2. The first positioning mechanism 3 is used to position one end of a spindle sleeve 4 located in the middle of the ring-shaped mounting box 2 and drive it to move towards the direction close to the ring plate 6.

[0059] The second positioning mechanism 5 includes a linkage assembly 51 and a positioning assembly 52. The linkage assembly 51 includes a contact cylinder 511, a moving column 512, a first spring 513 and a third ring gear 514. The contact cylinder 511 is a frustum-shaped cylindrical structure. One end of the contact cylinder 511 is fixedly connected to one end of the moving column 512. The other end of the moving column 512 penetrates through the ring plate 6 and is slidably installed on the clamping block 7, and both the moving column 512 and the contact cylinder 511 are concentric with the clamping block 7. A first spring 513 connected to the clamping block 7 is fixed on the outer wall of the other end of the moving column 512. Third ring gears 514 are equidistantly distributed on the outer wall of the contact cylinder 511 along its axis direction. The third ring gears 514 are meshed with one end of the positioning assembly 52. The positioning assembly 52 is equidistantly and slidably installed on one side of the ring plate 6 along the axis of the ring plate 6. The other end of the positioning assembly 52 is matched with the other end of the spindle sleeve 4.

[0060] In this embodiment, the first positioning mechanism 3 first performs centering clamping on one end of the spindle sleeve 4 located in the middle of the ring-shaped mounting box 2, realizes quick and accurate centering of one end of the spindle sleeve 4, reduces the initial positioning error, shortens the positioning time, and improves the processing efficiency of the grinding machine for it. Then, the first positioning mechanism 3 can drive the spindle sleeve 4 to move towards the direction close to the second positioning mechanism 5 by rotating.

[0061] 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;

[0062] 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;

[0063] 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.

[0064] 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.

[0065] like Figures 2 to 6As shown in the figure, 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-shaped 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 engaged with the third annular gear 514 is fixed in the middle of the rotating shaft 524. Both ends of the rotating shaft 524 are fixed with rotating arms 525. The rotating arms 525 are distributed outside the abutting cylinder 511. One end of the rotating arm 525 is installed with a rotating cylinder 526. An arc-shaped plate 527 is fixed on the outer wall of the rotating cylinder 526 close to the main shaft sleeve 4.

[0066] As Figures 2 to 6 shown in the figure, as a preferred embodiment of the present invention, the rotating cylinder 526 is rotatably installed inside the rotating arm 525, and an elastic clip strip connected to the rotating cylinder 526 is fixed inside the rotating arm 525. After the rotating cylinder 526 rotates, the elastic clip strip can drive the rotating cylinder 526 to quickly rotate back to the initial state through its own elastic force. This can not only facilitate the full contact between the arc-shaped plate 527 and the outer wall of the main shaft sleeve 4, but also facilitate the quick positioning and centering clamping of the next main shaft sleeve 4 to be processed.

[0067] In this embodiment, when the abutting cylinder 511 and the third annular gear 514 thereon move, the third annular 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;

[0068] The second gear 523 drives the rotating shaft 524 to rotate. The rotating shaft 524 drives the rotating arm 525 to rotate towards the direction close to the main shaft sleeve 4. The rotating arm 525 drives the rotating cylinder 526 and the arc-shaped plate 527 thereon to rotate towards the direction close to the main shaft sleeve 4. When the arc-shaped plate 527 rotates to contact the outer wall of the main shaft 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 further enables the arc-shaped plate 527 to fully contact the outer wall of the main shaft sleeve 4, thereby realizing the quick and effective positioning of the other end thereof, improving the stability of the main shaft sleeve 4, and at the same time improving the processing efficiency and processing quality of the main shaft sleeve 4;

[0069] 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.

[0070] In a preferred embodiment, the rotating arm 525 preferably adopts an L-shaped rod structure.

[0071] 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.

[0072] 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;

[0073] Next, the driving and controlling component 34 can drive the moving component 33 to rotate. The moving component 33 can drive the main shaft sleeve 4 positioned thereon to move towards the second positioning mechanism 5, so that the main shaft sleeve 4 abuts against the second positioning mechanism 5 and triggers the second positioning mechanism 5 to quickly position the other end of the main shaft sleeve 4, improving the positioning accuracy and consistency of both ends of the main shaft sleeve 4, ensuring the stability and accuracy of the main shaft sleeve 4 during the machining process, and reducing machining defects caused by vibration or position deviation.

[0074] As Figures 2 to 8 shown, as a preferred embodiment of the present invention, the distance adjusting component 31 includes a worm 311, a worm gear 312, a first annular gear 313, an annular seat 314, a mounting post 315, an arc-shaped groove 316, a sliding post 317 and a connecting post 318. The worm 311 is rotatably installed in the annular installation box 2. One end of the worm 311 extends to the outside of the annular installation box 2. The other end of the worm 311 meshes with the worm gear 312 rotatably installed in the annular installation box 2. The worm gear 312 meshes with the first annular gear 313 fixed on the outer wall of the annular seat 314. The annular seat 314 is rotatably installed in the annular installation box 2 through the mounting post 315. The annular seat 314 is circumferentially and equidistantly provided with arc-shaped grooves 316 that are slidably matched with one end of the sliding post 317. The arc-shaped grooves 316 are eccentric with respect to the annular seat 314. The other end of the sliding post 317 is fixedly connected to the connecting post 318. The connecting post 318 is slidably installed in the annular installation box 2. The connecting post 318 extends to the inside of the annular installation box 2 and is fixedly connected to the U-shaped mounting bracket 32.

[0075] In this embodiment, the worm 311 drives the worm gear 312 to rotate. The worm gear 312 drives the first annular gear 313 to rotate. The first annular gear 313 drives the annular seat 314 and the arc-shaped grooves 316 thereon to rotate. The arc-shaped grooves 316 can drive the sliding post 317 to move towards the main shaft sleeve 4 by means of eccentric setting and rotation. The sliding post 317 drives the connecting post 318 to move towards the main shaft sleeve 4. The connecting post 318 drives the U-shaped mounting bracket 32 to move towards the main shaft sleeve 4. The U-shaped mounting bracket 32 drives the moving component 33 thereon to move towards the main shaft sleeve 4, so that the moving component 33 can centeringly clamp one end of the main shaft sleeve 4 located in the middle of the annular installation box 2, thereby realizing quick and accurate centering of one end of the main shaft sleeve 4, reducing the initial positioning error, reducing the machining error caused by eccentricity, shortening the positioning time at the same time, and improving the machining efficiency of the grinding machine for it.

[0076] 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 achieve centering clamping and centering positioning of the main shaft sleeve 4, reducing the machining error caused by eccentricity; and the annular installation box 2 can limit the movement state of the connecting column 318, so that the connecting column 318 can move only when the arc-shaped 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 phenomena such as deviation during machining, and further improve its machining accuracy and machining efficiency.

[0077] As Figures 2 to 8 shown, as a preferred embodiment of the present invention, the moving component 33 includes a positioning leather wheel 331, a mounting shaft 332, a connecting cylinder 333, a hinge seat 334 and a telescopic member 335. The positioning leather wheel 331 is rotatably mounted in the U-shaped mounting frame 32 through the mounting shaft 332. Both ends of the mounting shaft 332 are provided with connecting cylinders 333. One end of the connecting cylinder 333 is provided with a hinge seat 334, and the outer wall of one of the connecting cylinders 333 is connected to the output end of the driving and controlling component 34. A telescopic member 335 is installed between two adjacent hinge seats 334.

[0078] As Figures 2 to 8 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 whether the telescopic column or the telescopic cylinder rotates, it can drive the telescopic cylinder or the telescopic column that cooperates with it to rotate synchronously, thereby realizing the rotational linkage of multiple positioning leather wheels 331.

[0079] In this embodiment, the U-shaped mounting frame 32 drives the positioning leather wheel 331 to move towards the main shaft sleeve 4. The positioning leather wheel 331 drives the connecting cylinder 333 and the hinge seat 334 to move towards the main shaft 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 contracted state. The positioning leather wheel 331 can quickly and accurately center one end of the main shaft sleeve 4 by moving, that is, quickly position the main shaft sleeve 4, reduce the initial positioning error, reduce the machining error caused by eccentricity, shorten the positioning time, and improve the machining efficiency of the grinding machine for it.

[0080] In a preferred embodiment, the hinge seat 334 can be replaced with a universal joint. Regardless of whether the angle between the telescopic member 335 and the connecting cylinder 333 increases or decreases, the drive and control assembly 34 can transmit torque to the telescopic member 335 through the connecting cylinder 333 and the hinge seat 334, and then transmit it to other positioning pulleys 331 through the telescopic member 335.

[0081] As Figures 2 to 8 shown, as a preferred embodiment of the present invention, the drive and control assembly 34 includes a motor 341, a first gear 342, and a second annular gear 343. The motor 341 is fixed on one side of a U-shaped mounting bracket 32. A first gear 342 is fixed on the output end of the motor 341. The first gear 342 meshes with a second annular gear 343 fixed on the outer wall of a connecting cylinder 333.

[0082] In this embodiment, the motor 341 drives the first gear 342 to rotate. The first gear 342 drives the second annular gear 343 to rotate. The second annular gear 343 drives a connecting cylinder 333 to rotate. A connecting cylinder 333 simultaneously drives the mounting shaft 332 and the hinge seat 334 connected thereto to rotate. The mounting shaft 332 simultaneously drives the connecting cylinder 333 and the positioning pulley 331 at the other end thereof to rotate. A hinge seat 334 drives the adjacent hinge seat 334 to rotate through the telescopic member 335, so that a plurality of positioning pulleys 331 in contact with the outer wall of the main shaft sleeve 4 rotate synchronously. By rotating, a plurality of positioning pulleys 331 can drive the main shaft sleeve 4 to move toward the second positioning mechanism 5, so that the main shaft sleeve 4 contacts the second positioning mechanism 5 and triggers the second positioning mechanism 5 to quickly position the other end thereof, improving the positioning accuracy and consistency of both 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.

[0083] The working principle of the present invention is:

[0084] First, the worm 311 drives the worm wheel 312 to rotate. The worm wheel 312 drives the first annular gear 313 to rotate. The first annular gear 313 drives the annular seat 314 and the arc groove 316 thereon to rotate. Through the eccentric setting and rotation, the arc groove 316 can drive the slide column 317 to move towards the main shaft sleeve 4. The slide column 317 drives the connecting column 318 to move towards the main shaft sleeve 4. The connecting column 318 drives the U-shaped mounting bracket 32 to move towards the main shaft sleeve 4. The U-shaped mounting bracket 32 drives the positioning pulley 331 to move towards the main shaft sleeve 4. The positioning pulley 331 drives the connecting cylinder 333 and the hinge seat 334 to move towards the main shaft 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 contracted state. The positioning pulley 331 can quickly and accurately center one end of the main shaft sleeve 4 through movement, that is, quickly position the main shaft sleeve 4.

[0085] Next, the motor 341 drives the first gear 342 to rotate. The first gear 342 drives the second annular gear 343 to rotate. The second annular gear 343 drives a connecting cylinder 333 to rotate. A connecting cylinder 333 simultaneously drives the mounting shaft 332 and the hinge seat 334 connected thereto to rotate. The mounting shaft 332 simultaneously drives the connecting cylinder 333 and the positioning pulley 331 at its other end to rotate. A hinge seat 334 drives the adjacent hinge seat 334 to rotate through the telescopic member 335, so that multiple positioning pulleys 331 in contact with the outer wall of the main shaft sleeve 4 rotate synchronously. The multiple positioning pulleys 331 can drive the main shaft sleeve 4 to move towards the second positioning mechanism 5 through rotation.

[0086] When the main shaft sleeve 4 moves to contact the inner wall of the contact cylinder 511, the main shaft sleeve 4 drives the moving column 512 to slide on the clamping block 7 through the contact cylinder 511. At the same time, the contact cylinder 511 drives the third annular gear 514 thereon to move, ensuring that when the main shaft sleeve 4 can move to a predetermined position, it can achieve more accurate positioning through the way of inner wall contact. At this time, the first spring 513 is in a compressed state. The first spring 513 can absorb part of the vibration during the positioning of the main shaft sleeve 4 and improve the stability of the positioning tooling.

[0087] When the abutting cylinder 511 and the third annular gear 514 thereon are moving, the third annular 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 towards the direction close to the main shaft sleeve 4. The rotating arm 525 drives the rotating cylinder 526 and the arc-shaped plate 527 thereon to rotate towards the direction close to the main shaft sleeve 4; when the arc-shaped plate 527 rotates to abut against the outer wall of the main shaft 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-shaped plate 527 can fully abut against the outer wall of the main shaft sleeve 4, so as to realize rapid and effective positioning of the other end thereof;

[0088] Since the abutting cylinder 511 is a frustum-shaped cylindrical structure, when the third annular gear 514 moves, it can push the second gear 523 to move away from the main shaft sleeve 4. The second gear 523 can push the rotating arm 525 and the moving block 521 to move away from the main shaft 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 ensure that the rotating arm 525 and the rotating cylinder 526 and the arc-shaped plate 527 thereon will not interfere with the abutting cylinder 511 during the rotation process, so that the arc-shaped plate 527 can quickly and effectively position and centeringly clamp the other end of the main shaft sleeve 4;

[0089] At the same time, due to the special shape of the abutting cylinder 511, the other ends of the main shaft sleeves 4 with different sizes can be fully located inside the abutting cylinder 511 and always abut against its inner wall. The grinding head on the grinding machine enters from one end of the main shaft sleeve 4 and grinds the inside thereof. In this way, during the process of grinding the main shaft sleeve 4 by the grinding head, the phenomenon of the main shaft sleeve 4 retreating inward can be avoided;

[0090] The above is the working principle of the positioning tooling of the main shaft grinding machine.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall 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 performs centering clamping on one end of the spindle sleeve located in the middle of the annular mounting box by rotating, and drives the positioned spindle sleeve to move in the direction close to the second positioning mechanism. When the spindle sleeve moves to conflict 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, and the third annular gear drives one end of the positioning assembly to rotate in the direction close to the spindle sleeve and drives the other end to move in the direction away from the spindle sleeve by moving, and the positioning assembly realizes centering clamping on the other end of the spindle sleeve by rotating in the direction close to the spindle sleeve; 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 mounted on the rotating arm, wherein an arc-shaped plate is fixed on the outer wall of the rotating cylinder close to the main shaft sleeve; 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.

2. The spindle grinder positioning fixture according to claim 1, characterized in that: The rotating cylinder is rotatably mounted on the inner side of the rotating arm, and an elastic clamping strip connected with the rotating cylinder is fixed on the inner side of the rotating arm.

3. The spindle grinder positioning fixture according to claim 1, 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.

4. The spindle grinder positioning fixture according to claim 1, 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.

5. The spindle grinder positioning fixture according to claim 4, 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.

6. The spindle grinder positioning fixture according to claim 4, 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.

Images