CN219403907U - Grinding wheel contour trimmer capable of being positioned in centering mode - Google Patents

Abstract

The utility model discloses a grinding wheel contour trimmer capable of centering and positioning, which relates to the technical field of grinding wheel trimming, and comprises a support, a rotating arm, a trimming pen seat, a rotary limiting device and a direct-acting limiting device, wherein one end of the rotating arm is rotatably connected with the support, the trimming pen seat is slidably connected with the other end of the rotating arm, the rotary limiting device is used for limiting the relative rotation of the rotating arm and the support under a set angle, the direct-acting limiting device is used for centering and positioning to enable a pen point of a grinding wheel trimming pen to be in theoretical opposite direction to the rotating axis of the rotating arm, the grinding wheel contour trimmer comprises a positioning pin capable of sliding in the rotating arm, two positioning inclined planes are processed at one end of the positioning pin, a centering groove with inclined planes at two sides is formed on the trimming pen seat, and the positioning inclined planes are matched with the inclined planes; the grinding wheel profile trimmer can automatically compensate when the positioning inclined surface of the positioning pin is worn, the positioning precision can be better along with running-in of the service time, the centering locking requirements of higher precision and stability can be met, and the centering direct-acting positioning operation of the whole device is convenient and reliable.

Description

Grinding wheel contour trimmer capable of being positioned in centering mode

Technical Field

The utility model relates to the technical field of grinding wheel dressing, in particular to a grinding wheel contour dressing device capable of being positioned in a centering mode.

Background

In the field of aviation material testing, when performance tests are performed on a material tensile endurance test piece, an impact test piece, a fracture toughness KIC test piece, a crack propagation test piece and the like, a V-shaped notch or a U-shaped notch with the angle of 30-60 degrees needs to be processed on the test piece. The notch often presents the cross-section shape of the middle arc section of the straight line section at two sides, and the edge of the grinding wheel is required to be matched with the shape of the notch to be processed during finishing, so that the contour of the grinding wheel is required to be finished according to the shape of the notch to be processed; in addition, during the machining of such notches with grinding wheels, the grinding wheels often have wear conditions, which require multiple dressing of the wheel profile. The utility model discloses a grinding wheel dressing device of a circular arc continuous straight line three-section profile grinding wheel dressing device (application number CN 202020220882.3), which comprises a support, a rotating arm and a dressing pen seat, wherein one end of the rotating arm is rotatably connected with the support, the dressing pen seat is slidably connected with the other end of the rotating arm, and a grinding wheel dressing pen is inserted into the dressing pen seat. The device also comprises a direct-acting limiting device and a rotary limiting device, and when the rotary arm is locked by the rotary limiting device, the trimming of the straight line section of the outline of the grinding wheel can be directly finished by sliding the trimming pen seat; when the trimming pen holder is locked by the direct-acting limiting device, trimming of the outline arc section of the grinding wheel can be directly completed by rotating the rotating arm. The device can realize the rapid trimming of the circular arc continuous straight profile grinding wheel, and has convenient operation and high efficiency; meanwhile, the grinding wheel after each trimming can be kept consistent, and the stability and consistency of the processing size of the workpiece are further ensured.

When the grinding wheel dressing device is used for dressing the contour of the circular arc section of the grinding wheel, the straight-movement limiting device is required to lock the grinding wheel dressing pen seat at the centering position. In the practical process, the centering locking mode has higher requirements on the machining precision of the middle plate and the middle groove, particularly the middle plate and the middle groove are inevitably worn after being used for many times, and once the wear condition exists, the middle plate is provided with a gap after being clamped into the middle groove, and the centering locking precision and the stability requirements can not be met any more, so that the device can not be used continuously.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the grinding wheel profile trimmer capable of centering and positioning, which replaces the original direct-acting limiting device by arranging the positioning pin and the centering groove, can automatically compensate when the positioning inclined surface of the positioning pin is worn, has a centering and positioning effect which is better along with running-in of the service time, can meet the centering and locking requirements of high precision and high stability, has convenient and reliable centering and direct-acting positioning operation and has longer service life.

The aim of the utility model is realized by the following technical scheme:

the utility model provides a but grinding wheel profile trimmer of centering location, includes support, rocking arm and finishing pen seat, the one end of rocking arm with the rotatable connection of support, finishing pen seat with the other end slidable connection of rocking arm, be provided with grinding wheel on the finishing pen seat and repair the pen, still include rotation stop device and direct action stop device, rotation stop device is used for restricting under the settlement angle the relative rotation of rocking arm and support, direct action stop device is used for restricting under the settlement position the relative slip of finishing pen seat and rocking arm, direct action stop device is in its settlement position the nib of grinding wheel finishing pen just is right for the pivoted axle of support, direct action stop device includes the locating pin, the locating pin slidable set up in the rocking arm, the one end of locating pin is processed and is used the axis of locating pin is the two locating inclined planes of symmetry each other, set up the centering groove on the finishing pen seat, the both sides processing of centering groove is symmetrical inclined plane, locating inclined plane looks adaptation.

Further, the pen holder further comprises an elastic piece, wherein the elastic piece is used for applying force to the positioning pin in the direction of the trimming pen holder.

Specifically, the mounting hole has been seted up on the rocking arm, the elastic component set up in the mounting hole, install the jump ring on the locating pin, the elastic component through the butt jump ring to the locating pin is exerted to the power of repairing the pen seat direction.

Preferably, the elastic piece is a conical spring.

Further, the locating pin can rotate in the rotating arm.

Further, the device also comprises a check device, wherein the check device is used for limiting the positioning pin axially after the positioning pin is separated from the centering groove.

Specifically, the non-return device includes spacing post and stop collar, spacing post fixed mounting is in on the rocking arm, the stop collar is fixed to be cup jointed the locating pin is kept away from the one end of repairing the pen seat, the breach that the axial set up has been seted up on the stop collar, spacing post can insert in the breach, spacing post inserts in the breach one end that the locating pin processing has the location inclined plane just right the centering groove.

The beneficial effects of the utility model are as follows:

the utility model relates to a grinding wheel profile trimmer capable of being positioned in a centering way, which is a model for improving a direct-acting limiting device on the basis of the existing grinding wheel trimming device. The improved direct-acting limiting device comprises a locating pin, wherein the locating pin is slidably arranged in the rotating arm, and one end of the locating pin is provided with two symmetrical locating inclined planes; the trimming pen seat is provided with a centering groove, two sides of the centering groove are provided with symmetrical inclined planes, and the positioning inclined planes are matched with the inclined planes. When the device is used for centering locking, the positioning inclined surface and the inclined surface can effectively guide the positioning pin to be wedged into the trimming pen seat to finish centering locking, even if abrasion occurs after multiple uses, accurate and stable locking can be continuously realized through a deeper wedging mode of the positioning pin, and the centering positioning effect can be better along with running-in of the service time.

The locating pin can slide in the rotating arm, can rotate in the rotating arm, is provided with the elastic piece, the limiting column and the limiting sleeve, and can slide at will only by pulling out the locating pin and then slightly rotating the locating pin when the contour of the straight section of the grinding wheel needs to be trimmed; when the contour of the circular arc section of the grinding wheel needs to be trimmed, the locating pin is rotated to enable the limit post to be inserted into the notch of the limit sleeve, the locating pin can be positioned in the circumferential direction, the trimming pen seat is adjusted in a sliding mode, when the end portion of the locating pin is opposite to the middle groove, the wedging centering locking process can be directly completed under the action of the elastic piece, and the centering direct-acting locating operation of the whole device is convenient and reliable.

Drawings

FIG. 1 is a schematic view of the overall structure of a centrally positionable abrasive wheel profile conditioner in accordance with the present utility model;

FIG. 2 is a schematic exploded view of a centrally positionable grinding wheel profile conditioner according to the present utility model;

FIG. 3 is a schematic diagram of the assembled structure of a linear motion limiter in a centrally positionable grinding wheel profile conditioner in accordance with the present utility model;

in the figure, the pen holder comprises a 1-support, a 2-rotating arm, a 3-trimming pen holder, a 4-grinding wheel trimming pen, a 5-locating pin, a 6-locating inclined plane, a 7-centering groove, an 8-clamp spring, a 9-elastic piece, a 10-limit column and an 11-limit sleeve.

Detailed Description

The technical solution of the present utility model will be described in further detail with reference to the accompanying drawings, but the scope of the present utility model is not limited to the following description.

As shown in fig. 1 to 3, a grinding wheel profile conditioner capable of being positioned in a centering manner is an improved model based on the existing grinding wheel conditioning device (see an arc-connecting linear three-section profile grinding wheel conditioning device of an utility model patent, application number CN 202020220882.3). The existing grinding wheel dressing device comprises a support 1, a rotating arm 2 and a dressing pen seat 3, wherein one end of the rotating arm 2 is rotatably connected with the support 1, the dressing pen seat 3 is slidably connected with the other end of the rotating arm 2, and a grinding wheel dressing pen 4 is arranged on the dressing pen seat 3; the rotary limiting device is used for limiting the relative rotation of the rotating arm 2 and the support 1 under a set angle, the linear limiting device is used for limiting the relative sliding of the dressing pen holder 3 and the rotating arm 2 under a set position, and the pen point of the grinding wheel dressing pen 4 is opposite to the rotating shaft of the rotating arm 2 relative to the support 1 when the linear limiting device is in the set position. On the basis of the structure, the direct-acting limiting device is improved and comprises a locating pin 5, the locating pin 5 is slidably arranged in a rotating arm 2, two locating inclined planes 6 which are symmetrical with each other by taking the axis of the locating pin 5 as a symmetrical axis are processed at one end of the locating pin 5, a centering groove 7 is formed in a trimming pen seat, symmetrical inclined planes are processed at two sides of the centering groove 7, and the locating inclined planes 6 are matched with the inclined planes. Specifically, the inclination angle of the positioning inclined surface 6 is the same as that of the inclined surface, one end of the positioning pin 5, on which the positioning inclined surface 6 is formed, can be wedged into the centering groove 7, the depth of the centering groove 7 is larger than the wedging distance of the positioning pin 5, and the maximum width of the centering groove 7 is smaller than the diameter of the positioning pin 5.

When the centering locking is performed, the centering locking of the finishing pen holder 3 can be completed by the wedging mode under the guidance of the positioning inclined surface 6 and the inclined surface. When the locating inclined surface 6 at the end part of the locating pin 5 and the side edge of the centering groove 7 are worn after multiple uses, the locating pin 5 can continuously realize centering locking in a deeper wedging mode, and the centering locating effect can be better and better along with running-in of the using time. Compared with the original direct-acting limiting device, the centering locking of the finishing pen holder 3 can be realized through a self-running-in compensation mode after abrasion occurs, the centering locking requirements of higher precision and stability are maintained, and the service life of the whole device is prolonged.

The positioning inclined surface 6 is formed in a laterally symmetrical manner, and the centering and locking can be achieved directly by guiding the finishing pen holder 3 back to the original neutral position. However, in practice, the wear degree of the positioning inclined planes 6 at both sides is not completely consistent, when the positioning pin 5 wedges against the centering groove 7, the trimming pen holder 3 is not necessarily returned to the original neutral position, but the wedged state thereof still can keep stable locking of the trimming pen holder 3, and at this time, the trimming pen holder can be used together with a grinding wheel trimming pen position adjusting device (see the grinding wheel trimming pen position adjusting device, the grinding wheel trimmer and the application number CN 202021617686.6), and the new neutral position is determined to be matched with the stable locking state by adjusting the position of the grinding wheel trimming pen 4.

Further, the pen holder further comprises an elastic piece 9, wherein the elastic piece 9 is used for applying force to the positioning pin 5 in the direction of the trimming pen holder 3, so that the wedging force of the positioning pin 5 to the centering groove 7 can be always kept, and the stable locking state of the trimming pen holder 3 can be maintained.

In a specific implementation, the rotating arm 2 is provided with a mounting hole, the elastic piece 9 is arranged in the mounting hole, the positioning pin 5 is provided with a clamp spring 8, and the elastic piece 9 applies a force to the positioning pin in the direction of the trimming pen seat 3 by abutting against the clamp spring 8. The elastic member 9 may be in various forms such as a spring and an elastic pulling piece, and in this embodiment, the elastic member 9 is a conical spring, which is more suitable for use in a small space mounting hole and is convenient to install.

Further, the positioning pin 5 is rotatable in the arm 2 in addition to being slidable in the arm 2. When the grinding wheel profile dresser dresses the straight-line section profile of the grinding wheel, the locking state of the dressing pen holder 3 needs to be released by pulling out the positioning pin 5. Through the arrangement, the positioning pin 5 is only required to slightly rotate after being pulled out during operation, so that the positioning inclined surface 6 and the inclined surface are staggered, and the positioning pin 5 does not enter the centering groove 7 any more because the maximum width of the centering groove 7 is smaller than the diameter of the positioning pin 5, and the trimming pen holder 3 can slide randomly.

Further, the device further comprises a check device, wherein the check device is used for limiting the axial direction of the positioning pin 5 after the positioning pin 5 is separated from the centering groove 7, so that abrasion between the end part of the positioning pin 5 and the trimming pen seat 3 or interference between the end part of the positioning pin 5 and the opening end of the centering groove in the sliding process of the trimming pen seat 3 is avoided, and smooth sliding of the trimming pen seat 3 is further ensured.

In specific implementation, the check device comprises a limit post 10 and a limit sleeve 11, wherein the limit post 10 is fixedly arranged on the rotary arm 2, the limit sleeve 11 is fixedly sleeved at one end of the locating pin 5, which is far away from the trimming pen holder 3, an axially arranged notch is formed in the limit sleeve 11, and when the limit post 10 is inserted into the notch, one end of the locating pin 5, which is provided with the locating inclined plane 6, is opposite to the centering groove 7. When the trimming pen seat 3 is locked in a centering way, the limiting column 10 is just inserted into the notch, and the circumferential direction of the positioning pin 5 can be positioned through the notch; when the pen holder 3 is required to be slidably trimmed to trim the straight-line section outline of the grinding wheel, after the locating pin 5 is pulled out, the locating pin 5 is slightly rotated, so that the end part of the limiting post 10 props against the end part of the limiting sleeve 11, and the locating pin 5 can be prevented from retreating under the action of the elastic piece 9 at the moment, and the whole device is convenient and reliable in direct-acting locating operation.

The foregoing is merely a preferred embodiment of the utility model, and it is to be understood that the utility model is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims (7)

1. The utility model provides a grinding wheel profile trimmer that can center location, includes support, rocking arm and finishing pen seat, the one end of rocking arm with the rotatable connection of support, finishing pen seat with the other end slidable connection of rocking arm, be provided with grinding wheel on the finishing pen seat, still include rotation stop device and direct action stop device, rotation stop device is used for restricting under the settlement angle the relative rotation of rocking arm and support, direct action stop device is used for restricting under the settlement position the relative slip of finishing pen seat and rocking arm, direct action stop device is in its settlement position the nib of grinding wheel finishing pen just is right for the pivoted rotation axis of support, its characterized in that, direct action stop device includes the locating pin, the locating pin slidable set up in the rocking arm, the one end of locating pin is processed and is used the axis of locating pin is two locating inclined planes of symmetry each other, set up the centering groove on the finishing seat, the both sides processing of centering groove is symmetrical inclined plane, locating inclined plane and adaptation inclined plane.

2. The center positionable grinding wheel profile conditioner of claim 1, further comprising an elastic member for applying a force to said locating pin in a direction toward said conditioning pen holder.

3. The grinding wheel profile trimmer capable of being centered and positioned according to claim 2, wherein the rotating arm is provided with a mounting hole, the elastic piece is arranged in the mounting hole, the positioning pin is provided with a clamp spring, and the elastic piece applies a force to the positioning pin in the direction of the trimming pen holder by abutting against the clamp spring.

4. A centring grinding wheel profile conditioner as claimed in claim 3, wherein the resilient member is a conical spring.

5. The centrally located grinding wheel profile conditioner of claim 2, wherein said locating pin is further rotatable within said rotatable arm.

6. The center positionable grinding wheel profile conditioner of claim 5, further comprising a check means for axially limiting said locating pin after said locating pin is disengaged from said centering groove.

7. The centering grinding wheel profile trimmer according to claim 6, wherein the check device comprises a limit post and a limit sleeve, the limit post is fixedly mounted on the rotating arm, the limit sleeve is fixedly sleeved at one end of the locating pin, which is far away from the trimming pen holder, the limit sleeve is provided with a notch axially arranged along the limit sleeve, the limit post can be inserted into the notch, and when the limit post is inserted into the notch, one end of the locating pin, which is provided with a locating inclined plane, is opposite to the centering groove.