CN217493629U - Precision grinding mechanism for micro-drill machining - Google Patents

Abstract

The application discloses a precise grinding mechanism for micro-drilling machining, which comprises a controller, a supporting mechanism, a grinding wheel and a grinding wheel feeding mechanism, wherein a rotary driving mechanism is arranged on the supporting mechanism, the grinding wheel is connected with the output end of the rotary driving mechanism, an adjusting base is arranged on the supporting mechanism, a grinding wheel part is arranged on the adjusting base, the adjusting base can adjust the position of the grinding wheel part, and then the grinding wheel part is controlled to be abutted against the grinding wheel; the grinding wheel feeding mechanism is connected with the supporting mechanism and is used for driving the grinding wheel to move towards or away from the workpiece to be machined; the grinding wheel feeding mechanism comprises a fixed seat, a feeding driving mechanism and a displacement detection mechanism are arranged on the fixed seat, a sliding part is arranged at the output end of the feeding driving mechanism and connected with a supporting mechanism, and the displacement detection mechanism is connected with a controller and used for detecting the movement distance of the sliding part. This application can accurate control grinding wheel's displacement, ensures the precision of grinding, improves the yields.

Description

Precision grinding mechanism for micro-drilling

Technical Field

The application belongs to the technical field of micro-drilling machining, and particularly relates to a precise grinding mechanism for micro-drilling machining.

Background

The drill bit is a commonly used drilling tool, and with the development of science and technology, more and more industries need to provide small holes to meet different process or operation requirements, so that the micro drill bit needs to be used, particularly in the fields of circuit board manufacturing, medical equipment, precision instrument production and the like. The micro drill bit is generally a drill bit with a diameter of less than 3.175mm, and is called micro drill for short. In the production process of the micro drill, the bar stock is ground to be thinned to the preset diameter of the micro drill, and then subsequent procedures such as grooving, back grinding and the like are carried out.

Most of grinding wheels of the existing grinding mechanism are fixed on a machine table to rotate, a bar is clamped by a clamping mechanism, and then the bar is driven to move onto the grinding wheels for grinding; such a grinding mechanism has at least the following problems;

1. the clamping mechanism drives the bar to be ground, so that the bar needs to move and rotate, and the bar is slightly shifted on the clamping mechanism due to the small diameter of the micro drill, so that the grinding is not accurate and the defective product is high.

2. Due to the lack of an accurate displacement detection mechanism, the movement stroke of the grinding wheel is not accurately controlled, so that the grinding is not in place or the bar stock is scrapped.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the application provides a precision grinding mechanism for micro-drilling, which comprises a controller, a supporting mechanism, a grinding wheel and a grinding wheel feeding mechanism, wherein the supporting mechanism is provided with a rotary driving mechanism, the grinding wheel is connected with the output end of the rotary driving mechanism, the rotary driving mechanism is connected with the controller, the supporting mechanism is provided with a grinding wheel dressing mechanism, the grinding wheel dressing mechanism comprises an adjusting base, the adjusting base is provided with a grinding wheel piece, the adjusting base can adjust the position of the grinding wheel piece, and then the grinding wheel piece is controlled to abut against the grinding wheel; the grinding wheel feeding mechanism is connected with the supporting mechanism and is used for driving the grinding wheel to move towards or away from the workpiece to be machined; the grinding wheel feeding mechanism comprises a fixed seat, a feeding driving mechanism and a displacement detection mechanism are arranged on the fixed seat, a sliding part is arranged at the output end of the feeding driving mechanism, the sliding part is connected with the supporting mechanism, the displacement detection mechanism is connected with the controller, and the displacement detection mechanism is used for detecting the movement distance of the sliding part.

As a further improvement of the present application, the feeding driving mechanism includes a driving motor, a speed reducer and a transmission screw, the speed reducer is respectively connected with the driving motor and the fixing base, the driving motor is connected with the controller, an output end of the driving motor is connected with an input end of the speed reducer, an output end of the speed reducer is connected with the transmission screw, the transmission screw is rotatably and limitedly connected with the fixing base, the sliding member is in threaded connection with the transmission screw, and the sliding member is slidably connected with the fixing base; the displacement detection mechanism comprises a grating ruler and a grating ruler reading head, the grating ruler is connected with the sliding part, the grating ruler reading head is arranged on the fixed seat and at a position corresponding to the grating ruler, and the grating ruler reading head is connected with the controller.

As the further improvement of this application, the parallel is equipped with two V font guide rails on the fixing base, the both sides of slider are equipped with V font gib block respectively, V font gib block card is gone into sliding connection in the V font guide rail.

As a further improvement of this application, supporting mechanism includes slip table and riser, the slip table with the riser is connected, the slip table with the slider is connected, be equipped with the sealing member on the fixing base, the other end of sealing member with the slip table is connected.

As a further improvement of the application, a mounting plate is arranged on the vertical plate, the mounting plate is connected with the vertical plate in an adjustable limiting manner, a lifting adjusting mechanism is arranged on the mounting plate, the lifting adjusting mechanism is connected with the rotary driving mechanism, the lifting adjusting mechanism is used for adjusting the mounting height of the grinding wheel, and the adjusting base is connected with the mounting plate.

As a further improvement of this application, adjust the base and include bracket, alignment jig and clamp splice, the one end of bracket with the mounting panel is articulated, be equipped with the arc spout on the mounting panel, one side that the hinged end was kept away from to the bracket is equipped with spacing bolt, spacing bolt can slide in the arc spout, just spacing bolt with the spacing connection of arc spout, the alignment jig with spacing connection is adjusted to the bracket, be equipped with the swallow tail seat on the alignment jig, the last slip of swallow tail seat is equipped with the clamp splice, dull polish wheel spare with the clamp splice is connected.

As a further improvement of this application, be equipped with first accommodate the lead screw on the clamp splice, first accommodate the lead screw with the rotatable spacing connection of clamp splice, first accommodate the lead screw's one end is equipped with adjustment handle, first accommodate the lead screw's the other end with the adjustable threaded connection of dovetail seat, be equipped with the scale ring on the clamp splice, the scale ring overlaps to be established adjustment handle's the outside, on the adjustment handle with scale ring relevant position department is equipped with the instruction structure.

As a further improvement of this application, lift adjustment mechanism is including adjusting seat and second accommodate the lead screw, adjust the seat with the mounting panel is connected, second accommodate the lead screw with adjust the rotatable spacing connection of seat, the last slip of second accommodate the lead screw is equipped with the sliding block, the sliding block with rotary drive mechanism connects, second accommodate the lead screw's one end is equipped with adjusting hand wheel.

As a further improvement of the application, the rotary driving mechanism comprises a main shaft fixing seat and an electric main shaft, the main shaft fixing seat is connected with the sliding block, the electric main shaft is connected with the controller, the electric main shaft is connected with the main shaft fixing seat, and the grinding wheel is connected with the output end of the electric main shaft.

As a further improvement of the application, a protective cover is arranged on the main shaft fixing seat, the protective cover is sleeved on the outer side of the grinding wheel, and a notch is formed in the corresponding position of the protective cover and the corresponding position of the grinding wheel part.

Compared with the prior art, the beneficial effects of this application do:

1. according to the grinding wheel dressing mechanism, the grinding wheel dressing mechanism is arranged on the supporting mechanism, so that the grinding wheel can be dressed in real time, the grinding wheel is ensured to be always in the optimal machining state, and the grinding machining precision and yield are improved;

2. according to the bar stock grinding device, the grinding wheel feeding mechanism can drive the grinding wheel to move, so that the bar stock is ground, and the risk of bar stock displacement in the process of moving and grinding the bar stock by the clamp is avoided by adopting a mode of driving the grinding wheel to move and grind, so that the grinding precision is improved, and the yield is improved;

3. this application can real-time detection slider's displacement distance through displacement detection mechanism, and then the displacement distance of accurate control grinding wheel, ensures the precision of grinding, avoids grinding wheel to walk the inaccurate grinding or the condemned problem of bar that leads to the fact of position, improves the precision and the yields of processing.

Drawings

In order to illustrate the present application or prior art more clearly, a brief description of the drawings needed for the description of the embodiments or prior art will be given below, it being clear that the drawings in the following description are some embodiments of the present application and that other drawings can be derived from them by a person skilled in the art without inventive effort.

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic view of another embodiment of the present disclosure;

FIG. 3 is an exploded view of an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a grinding wheel feed mechanism in an embodiment of the present application;

FIG. 5 is an exploded view of the dressing mechanism of the embodiment of the present application;

fig. 6 is an exploded view of the rotation driving mechanism and the lifting adjustment mechanism in the embodiment of the present application.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

As shown in fig. 1-6, a precision grinding mechanism for micro-drilling comprises a controller, a grinding wheel 1, a supporting mechanism 2 and a wheel feeding mechanism 3, wherein the supporting mechanism 2 is provided with a rotary driving mechanism 4, the grinding wheel 1 is fixedly connected with an output end of the rotary driving mechanism 4, and the rotary driving mechanism 4 is connected with the controller and is used for driving the grinding wheel 1 to rotate. The grinding wheel feeding mechanism 3 is connected with the supporting mechanism 2 and is used for driving the grinding wheel 1 to move towards or away from the workpiece to be machined; the grinding wheel feeding mechanism 3 comprises a fixed seat 31, a feeding driving mechanism and a displacement detection mechanism are arranged on the fixed seat 31, a sliding part 32 is arranged at the output end of the feeding driving mechanism, the sliding part 32 is connected with the supporting mechanism 2, the displacement detection mechanism is connected with the controller, and the displacement detection mechanism is used for detecting the movement distance of the sliding part 32.

When the grinding machine works, the controller controls the rotary driving mechanism 4 to work, and the rotary driving mechanism 4 drives the grinding wheel 1 to rotate, so that a workpiece to be machined is conveniently ground; then, the controller controls the grinding wheel feeding mechanism 3 to work, the feeding driving mechanism drives the sliding part 32 to move, the sliding part 32 drives the supporting mechanism 2 and the grinding wheel 1 to move towards the direction close to the workpiece to be machined, and the displacement detection mechanism can monitor the displacement distance of the sliding part 32 in real time, namely the displacement distance of the grinding wheel 1, so that accurate grinding is realized, and the grinding wheel 1 can grind the workpiece to be machined to a specified size; after the machining is finished, the feeding driving mechanism provides a reverse driving force again to drive the sliding part 32 to reset and move, the sliding part 32 drives the supporting mechanism 2 and the grinding wheel 1 to move in the direction away from the workpiece to be machined, and the supporting mechanism 2 can be ensured to return to the initial position through the displacement detection mechanism.

The precise grinding mechanism can detect the displacement distance of the sliding part 32 in real time through the displacement detection mechanism, namely can detect the displacement distance of the grinding wheel 1 in time, and can accurately control the displacement distance of the grinding wheel 1; the precision of control is improved, the grinding precision can be ensured, and the yield is improved.

The feeding driving mechanism comprises a driving motor 33, a speed reducer 34 and a transmission screw 35, the speed reducer 34 is respectively connected with the driving motor 33 and the fixed seat 31, the driving motor 33 is connected with the controller, the output end of the driving motor 33 is connected with the input end of the speed reducer 34, the output end of the speed reducer 34 is connected with the transmission screw 35, the transmission screw 35 is rotatably limited and connected with the fixed seat 31, the sliding part 32 is in threaded connection with the transmission screw 35, and the sliding part 32 is in sliding connection with the fixed seat 31; during operation, the controller controls the driving motor 33 to operate, the driving motor 33 drives the transmission screw 35 to rotate through the speed reducer 34, and the transmission screw 35 rotates to drive the sliding part 32 to slide on the fixed seat 31, so that the supporting mechanism 2 and the grinding wheel 1 are driven to move towards or away from a workpiece to be machined.

In order to limit and guide the moving stroke of the sliding part 32, two V-shaped guide rails 36 are arranged on two sides of the fixed seat 31 in parallel, and V-shaped guide strips 37 are arranged at corresponding positions of two sides of the sliding part 32 and the V-shaped guide rails 36; when the driving motor 33 drives the sliding member 32 to move, the V-shaped guide bar 37 slides in the V-shaped guide rail 36, so that the sliding member 32 can be prevented from moving and deviating, and the moving direction of the sliding member is limited.

In other embodiments, the guide bar and the guide groove may also be in other shapes capable of being clamped and sliding in a limited manner, for example: dovetail seats, dovetail grooves and the like.

The displacement detection mechanism comprises a grating ruler 38 and a grating ruler reading head 39, the grating ruler 38 is fixedly installed on one side surface of the sliding part 32, the grating ruler reading head 39 is fixedly installed on the fixed seat 31 and at a position corresponding to the grating ruler 38, and the grating ruler reading head 39 is connected with the controller. In the process that the driving motor 33 drives the sliding part 32 to move, the grating scale 38 moves synchronously with the sliding part 32, and the grating scale reading head 39 can acquire the moving distance of the grating scale 38, so that the moving stroke of the sliding part 32 is accurately controlled, the control precision of feeding the grinding wheel 1 is improved, and the precision of grinding processing is improved.

The supporting mechanism 2 comprises a sliding table 21 and a vertical plate 22, the sliding table 21 is fixedly connected with the vertical plate 22, the sliding table 21 is connected with a sliding part 32, a sealing part 5 is arranged on a fixed seat 31, and the other end of the sealing part 5 is dynamically and hermetically connected with the sliding table 21. The provision of the seal 5 prevents grinding chips, coolant, or the like from entering into the wheel feed mechanism 3, thereby causing drive failure or inaccurate displacement. The sealing element 5 can be a V-shaped or Y-shaped dynamic sealing ring, and can also be a corrugated hose or the like.

The vertical plate 22 is provided with an installation plate 23, the installation plate 23 is connected with the vertical plate 22 in an adjustable limiting manner, and the horizontal elevation angle of the grinding wheel 1 can be adjusted by adjusting the installation position of the installation plate 23 on the vertical plate 22; the mounting plate 23 is provided with a grinding wheel dressing mechanism 6, the grinding wheel dressing mechanism 6 comprises an adjusting base, the adjusting base is connected with the mounting plate 23 in an adjustable limiting manner, the adjusting base is provided with a sand strip 61, and the adjusting base can adjust the position of the sand strip 61, so that the sand strip 61 is abutted against the grinding wheel 1; the grinding wheel dressing mechanism 6 is used for dressing the grinding wheel 1, so that the grinding wheel 1 is always in the optimal machining state, and the machining precision is improved.

The adjusting base comprises a bracket 62, an adjusting frame 63 and a clamping block 64, one end of the bracket 62 is hinged and limited and fixed with the mounting plate 23, the mounting plate 23 is provided with an arc-shaped chute 24, and one side of the bracket 63, which is far away from the hinged end, is provided with two limiting bolts 65; the limiting bolt 65 can be screwed down to enable the limiting bolt 65 to be fixedly connected with the arc-shaped sliding groove 24, so that the bracket 62 and the mounting plate 23 are limited and fixed; after the stop bolt 65 is loosened, the stop bolt 65 can slide within the arcuate slot 24, thereby causing the bracket 62 to rotate on the mounting plate 23. The horizontal elevation angle of the sand strip 61 can be adjusted through the matching of the limiting bolt 65 and the arc-shaped sliding groove 24; specifically, the limit bolt 65 is normally in a tightened state, and when the grinding wheel 1 needs to be dressed, the limit bolt 65 can be loosened, so that the bracket 62 is rotated on the mounting plate 23, and after the bracket 62 is rotated to a proper angle, the limit bolt 65 can be tightened again, so that the bracket 62 and the mounting plate 23 are fixed in a limited manner.

In order to accurately adjust the rotation angle of the bracket 62 on the mounting plate 23, an angle notch 25 is arranged on the connecting surface of the mounting plate 23 and the bracket 62; when the adjustment bracket 62 is rotated on the mounting plate 23, the user can know the rotation angle of the bracket 62 by observing the change of the value of the angular notch 25 on the mounting plate 23, thereby realizing accurate adjustment control.

The adjusting frame 63 is mounted on the bracket 62, the adjusting frame 63 is connected with the bracket 62 in an adjustable limiting manner, one end of the adjusting frame 63 is hinged, limited and fixed with the bracket 62, an arc-shaped hole 66 is formed in one side, away from the hinged end, of the bracket 62, a threaded hole 67 is formed in the adjusting frame 63 at a position corresponding to the arc-shaped hole 66, and the arc-shaped hole 66 is connected with the threaded hole 67 through a first limiting screw 68; when the first limiting screw 68 is loosened, the first limiting screw 68 can slide in the arc-shaped hole, the adjusting frame 63 can horizontally rotate on the bracket 62, so that the horizontal rotation angle of the sand bar 61 is adjusted, and after the proper position is reached, the first limiting screw 68 is screwed down, so that the adjusting frame 63 and the bracket 62 are limited and fixed; through the horizontal rotation angle who adjusts sand strip 61, can change the cooperation angle of sand strip 61 terminal surface and grinding wheel 1 to realize quick grinding wheel, improve machining efficiency.

The adjusting frame 63 is provided with a dovetail seat 69, the clamping block 64 is slidably connected with the dovetail seat 69, the sand bar 61 is detachably connected with the clamping block 64, and the sand bar 61 and the clamping block 64 are detachably connected in a manner of facilitating replacement of the sand bar 61. The clamping block 64 slides on the dovetail seat 69 so as to drive the sand strip 61 to move; specifically, a first adjusting screw 610 is arranged on the clamping block 64, the first adjusting screw 610 is in rotatable limit connection with the clamping block 64, an adjusting handle 611 is arranged at one end of the first adjusting screw 610, and the other end of the first adjusting screw 610 is in adjustable threaded connection with a dovetail seat 69; when adjustment is needed, the first adjusting screw 610 is driven to rotate by rotating the adjusting handle 611, so that the first adjusting screw 610 is screwed into or extends out of the dovetail seat 69, and the first adjusting screw 610 pushes or pulls the clamping block 64 to move, so as to drive the sand bar 61 to move towards or away from the grinding wheel 1.

In order to realize accurate adjustment of the movement distance of the sand bar 61, a scale ring 612 is arranged on the outer circumferential surface of the adjusting handle 611, and an indicating notch 613 is arranged at a position, corresponding to the scale ring 612, on the clamping block 64; when the adjusting handle 611 is rotated, the scale ring 612 rotates together, and the moving distance of the sand bar 61 can be known by observing the scale change condition of the indicating notch 613 aligned with the scale ring 612, so that accurate adjustment is achieved.

In other embodiments, the graduated ring 612 may also be disposed on the clamp block 64, the graduated ring 612 is sleeved on the outer side of the adjusting handle 611, and the indicating indentation 613 is disposed on the adjusting handle 611 at a position corresponding to the graduated ring 612.

When the grinding wheel 1 needs to be dressed, firstly, the limiting bolt 65 is loosened, so that the bracket 62 can rotate on the mounting plate 23, the rotating angle of the bracket 62 can be accurately controlled by observing the angle notch 25 on the mounting plate 23, the bracket 62 is rotated to a proper angle according to actual requirements, and then the limiting bolt 65 is screwed, so that the bracket 62 and the mounting plate 23 are limited and fixed; then loosening the first limit screw 68, swinging the adjusting frame 63 to horizontally rotate on the bracket 62, sliding the first limit screw 68 in the arc-shaped hole 66 so as to adjust the horizontal rotation angle of the sand bar 61, and screwing the first limit screw 68 after reaching a proper position so as to limit and fix the adjusting frame 63 and the bracket 62; and then, the adjusting handle 611 is rotated to drive the first adjusting screw 610 to rotate, so that the first adjusting screw 610 is screwed into the dovetail seat 69, the first adjusting screw 610 pushes the clamping block 64 to move, so that the sand bar 61 is driven to move towards the direction close to the grinding wheel 1 until the sand bar 61 is connected with the grinding wheel 1, the grinding wheel 1 is trimmed, according to actual needs, the change of the numerical value of the scale ring 612 corresponding to the indication notch 613 is observed, so that the feeding amount of the sand bar 61 is accurately controlled, and the grinding wheel 1 can be rapidly trimmed.

The mounting plate 23 is provided with a lifting adjusting mechanism 7, the lifting adjusting mechanism 7 is connected with the rotary driving mechanism 4, and the lifting adjusting mechanism 7 is used for adjusting the mounting height of the grinding wheel 1. The rotary driving mechanism 4 comprises a main shaft fixing seat 41 and an electric main shaft 42, the electric main shaft 42 is installed in the main shaft fixing seat 41, the electric main shaft 42 is connected with a controller, the output end of the electric main shaft 42 is fixedly connected with the grinding wheel 1, and the controller can control the electric main shaft 42 to work so as to drive the grinding wheel 1 to rotate; the lifting adjusting mechanism 7 comprises an adjusting seat 71 and a second adjusting screw rod 72, the adjusting seat 71 is fixedly connected with the mounting plate 23 through screws, the second adjusting screw rod 72 is rotatably and limitedly connected with the adjusting seat 71, a sliding block 73 is sleeved on the second adjusting screw rod 72, the sliding block 73 is slidably and limitedly connected with the second adjusting screw rod 72, the sliding block 73 is fixedly connected with the spindle fixing seat 41 through screws, and an adjusting hand wheel 74 is arranged at one end of the second adjusting screw rod 72. When the height of the grinding wheel 1 needs to be adjusted, the adjusting hand wheel 74 is rotated, so that the second adjusting screw 72 rotates on the adjusting seat 71, and the second adjusting screw 72 drives the sliding block 73 to move up and down on the second adjusting screw 72, thereby driving the main shaft fixing seat 41 and the grinding wheel 1 to move up and down.

In order to limit and guide the movement direction of the main shaft fixing seat 41, a dovetail guide rail 75 is arranged on the adjusting seat 71, a dovetail guide groove 76 matched with the dovetail guide rail 75 is arranged on the main shaft fixing seat 41, the dovetail guide rail 75 is clamped in the dovetail guide groove 76, and the dovetail guide rail 75 is in slidable limit connection with the dovetail guide groove 76; when the adjusting hand wheel 74 is rotated, the dovetail guide rail 75 slides up and down in the dovetail guide groove 76, thereby ensuring that the displacement direction of the spindle fixing seat 41 does not deviate.

In order to improve the accuracy of the lifting adjustment, a first dial indicator 77 is mounted on the adjusting seat 71, the first dial indicator 77 is used for detecting the lifting height of the spindle fixing seat 41, and a measuring head of the first dial indicator 77 abuts against the upper end face of the spindle fixing seat 41. When the adjusting hand wheel 74 is rotated, the main shaft fixing seat 41 slides on the dovetail guide rail 75, and the distance of lifting displacement can be accurately controlled by observing the numerical value change of the first dial indicator 77, so that the grinding precision is further improved.

The spindle fixing seat 41 is provided with three second limiting screws 43, and the second limiting screws 43 can penetrate through the dovetail guide grooves 76 and are abutted to the dovetail guide rails 75; through setting up second spacing screw 43, can ensure that after the lift adjustment is accomplished, main shaft fixing base 41 can be fixed with the spacing connection of regulation seat 71 to ensure the mounting height stability of grinding wheel 1, improve the precision of processing. The second limiting screw 43 is a locking screw with an L-shaped handle, so that the spindle fixing seat 41 and the adjusting seat 71 can be conveniently locked or loosened, and the height of the grinding wheel 1 can be conveniently adjusted.

The main shaft fixing seat 41 is provided with a protective cover 8, the protective cover 8 is sleeved on the periphery of the grinding wheel 1, the protective cover 8 can be adjusted in a lifting mode on the main shaft fixing seat 41, and the protective cover 8 can also be detached from the main shaft fixing seat 41. The protective cover 8 is mainly used for preventing grinding scraps from splashing and can also be used for preventing grinding cooling liquid from splashing. The corresponding position of protection casing 8 and sand bar 61 counterpoint is removed and is equipped with breach 81, sets up breach 81 for the convenience sand bar 61 can be to the grinding wheel repairment.

The vertical plate 22 is provided with an angle adjusting mechanism 9, and the angle adjusting mechanism 9 adjusts the horizontal elevation angle of the grinding wheel 1 by adjusting the installation position of the installation plate 23. The angle adjusting structure 9 includes a first adjusting screw 91 and a second adjusting screw 92, and the first adjusting screw 91 and the second adjusting screw 92 are respectively connected to the mounting plate 23 and the vertical plate 22. The mounting plate 23 is wedge-shaped, the wedge-shaped end part of the mounting plate 23 is hinged and fixed with the vertical plate 22, and the mounting plate 23 can rotate by taking a hinge point as an axis; three first connecting holes 93 are formed in the vertical plate 22, second connecting holes 94 are formed in positions, corresponding to the first connecting holes 93, of the mounting plate 23, each first connecting hole 93 is connected with the corresponding second connecting hole 94 through a third limiting screw 95, and the mounting plate 23 and the vertical plate 22 can be fixedly connected in a limiting mode by screwing the third limiting screws 95; first adjusting screw 91 and second adjusting screw 92 are installed on riser 22 respectively, and first adjusting screw 91 and second adjusting screw 92 are respectively with the adjustable threaded connection of riser 22, the one end of first adjusting screw 91 and the left side butt of mounting panel 23, the one end of second adjusting screw 92 and the right side butt of mounting panel 23.

When the adjustment is needed, all the third limiting screws 95 are loosened, then the first adjusting screw 91 and the second adjusting screw 92 are rotated to push the mounting plate 23 to rotate by taking the hinge point as an axis, so that the mounting angle of the mounting plate 23 is changed, the purpose of adjusting the horizontal elevation angle of the grinding wheel 1 is achieved, the third limiting screws 95 are screwed after the mounting plate 23 is rotated to a preset position, the mounting plate 23 is fixedly connected with the vertical plate 22 in a limiting manner, and the adjustment of the horizontal elevation angle of the grinding wheel 1 is completed; specifically, when the first adjusting screw 91 is screwed down and the second adjusting screw 92 is unscrewed, the first adjusting screw 91 pushes the mounting plate 23 to move, so that the mounting plate 23 rotates clockwise around the hinge point as an axis; when the second adjusting screw 92 is tightened and the first adjusting screw 91 is loosened, the second adjusting screw 92 pushes the mounting plate 23 to move, so that the mounting plate 23 rotates counterclockwise around the hinge point.

In order to ensure that the adjustment is carried out, the first connecting hole 93 and the second connecting hole 94 can also be aligned, in this embodiment, the first connecting hole 93 is a waist-shaped hole or an arc-shaped hole, the second connecting hole 94 is a threaded hole, during adjustment, the third limiting screw 95 slides in the first connecting hole 93, and after the adjustment is completed, the third limiting screw 95 is screwed down.

In other embodiments, the angle adjusting structure 9 may have only one adjusting screw, and the adjusting screw is adjustably connected with the vertical plate 22 by a thread and is fixedly connected with the mounting plate 23; during adjustment, the adjusting screw is screwed or unscrewed to be connected with the thread of the vertical plate 22, so that the adjusting screw can push or pull the mounting plate 23 to move, and the purpose of adjusting the horizontal elevation angle of the grinding wheel 1 is further achieved.

In order to improve the precision of angle adjustment, be equipped with measuring block 96 on the one side of keeping away from the pin joint on mounting panel 23, on riser 22 with measuring block 96's relevant position department fixed mounting have second percentage table 97, second percentage table 97 is used for detecting the rotation angle of mounting panel 23, the measuring head and the measuring block 96 butt of second percentage table 97. When adjusting mounting panel 23 and rotating, mounting panel 23 can drive and measure piece 96 and remove for measure piece 96 toward the direction motion of being close to or keeping away from second percentage table 97, through the numerical value change of observing second percentage table 97, can know the amount of movement of measuring piece 96, and then can calculate mounting panel 23's rotation angle, can accomplish accurate regulation control through setting up second percentage table 97, guarantee the precision of processing.

In this embodiment, the first dial indicator 77 and the second dial indicator 97 both adopt dial indicators in the prior art, and the measurement accuracy can reach 0.01 mm. The dial indicator reads the measured size by changing the minute straight line movement of the measuring rod caused by the measured size into the rotation of the pointer on the dial.

The working principle is as follows:

before grinding, firstly, adjusting the horizontal elevation angle and the installation height of the grinding wheel 1 to the optimal position according to actual requirements; all the third limiting screws 95 are loosened, then the first adjusting screw 91 or the second adjusting screw 92 is driven to push the mounting plate 23 to rotate by taking a hinge point as an axis by rotating the first adjusting screw 91 and the second adjusting screw 92, so that the mounting angle of the mounting plate 23 is changed, the purpose of adjusting the horizontal elevation angle of the grinding wheel 1 is achieved, the rotating angle is judged by observing the numerical value change of the second dial indicator 97, the third limiting screws 95 are screwed after the mounting plate 23 is rotated to a proper position, the mounting plate 23 is fixedly connected with the vertical plate 22 in a limiting manner, and the adjustment of the horizontal elevation angle of the grinding wheel 1 is completed; secondly, loosening the second limiting screw 43, then rotating the adjusting hand wheel 74 to enable the second adjusting screw 72 to rotate on the adjusting seat 71, enabling the second adjusting screw 72 to drive the sliding block 73 to move up and down on the second adjusting screw 72, so as to drive the main shaft fixing seat 41 to move up and down on the dovetail guide rail 75 and further drive the grinding wheel 1 to move up and down, judging the lifting distance by observing the numerical value change of the first dial 77, stopping rotating the adjusting hand wheel 74 after reaching a proper position, then screwing the second limiting screw 43, enabling the main shaft fixing seat 41 and the adjusting seat 71 to be in limiting connection and fixed, and completing the adjustment of the installation height of the grinding wheel 1.

During grinding, the controller respectively controls the electric spindle 42 and the driving motor 33 to work, and the electric spindle 42 rotates to drive the grinding wheel 1 to rotate; the driving motor 33 drives the transmission screw 35 to rotate through the speed reducer 34, the transmission screw 35 drives the sliding part 32 to slide on the V-shaped guide rail 36 in a rotating mode, the sliding part 32 drives the sliding table 21 to move towards the direction close to the workpiece to be machined, the sliding table 21 drives the vertical plate 22 and all mechanisms mounted on the vertical plate 22 to move together, the grinding wheel 1 is driven to move towards the direction close to the workpiece to be machined, the grinding wheel 1 is connected with the workpiece to be machined, the workpiece to be machined is ground, the displacement distance of the grating ruler reading head 39 for reading the grating ruler 38 can accurately control the movement distance of the sliding part 32, the workpiece to be machined is ground to a preset diameter size through the grinding wheel 1, and grinding machining is completed.

If the grinding wheel 1 is uneven or is worn more frequently, the grinding wheel 1 can be dressed by the wheel dressing mechanism 6, firstly, the limiting bolt 65 is loosened to enable the bracket 62 to rotate on the mounting plate 23, the rotating angle of the bracket 62 can be accurately controlled by observing the angle notch 25 on the mounting plate 23, the bracket 62 is rotated to a proper angle according to actual requirements, and then, the limiting bolt 65 is screwed to enable the bracket 62 and the mounting plate 23 to be fixed in a limiting way; then loosening the first limit screw 68, swinging the adjusting frame 63 to horizontally rotate on the bracket 62, sliding the first limit screw 68 in the arc-shaped hole 66 so as to adjust the horizontal rotation angle of the sand bar 61, and screwing the first limit screw 68 after reaching a proper position so as to limit and fix the adjusting frame 63 and the bracket 62; and then, by rotating the adjusting handle 611, the first adjusting screw 610 is driven to rotate, so that the first adjusting screw 610 is screwed into the dovetail seat 69, the first adjusting screw 610 pushes the clamping block 64 to move, so that the sand bar 61 is driven to move towards the direction close to the grinding wheel 1 until the sand bar 61 is connected with the grinding wheel 1, the grinding wheel 1 is trimmed, according to actual needs, the change condition of the scale ring 612 corresponding to the indication notch 613 is observed, so that the feeding amount of the sand bar 1 is accurately controlled, and the grinding wheel 1 is ensured to be quickly trimmed.

It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of providing a more thorough understanding of the present disclosure. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.

Claims (10)

1. The utility model provides a micro drill processing is with accurate grinding mechanism which characterized in that: the grinding wheel trimming mechanism comprises an adjusting base, a grinding wheel piece is arranged on the adjusting base, the position of the grinding wheel piece can be adjusted by the adjusting base, and the grinding wheel piece is further controlled to be abutted against the grinding wheel;

the grinding wheel feeding mechanism is connected with the supporting mechanism and used for driving the grinding wheel to move towards or away from the workpiece to be machined;

the grinding wheel feeding mechanism comprises a fixed seat, a feeding driving mechanism and a displacement detection mechanism are arranged on the fixed seat, a sliding part is arranged at the output end of the feeding driving mechanism, the sliding part is connected with the supporting mechanism, the displacement detection mechanism is connected with the controller, and the displacement detection mechanism is used for detecting the movement distance of the sliding part.

2. The precision grinding mechanism for micro drill processing according to claim 1, characterized in that: the feeding driving mechanism comprises a driving motor, a speed reducer and a transmission screw rod, the speed reducer is respectively connected with the driving motor and a fixed seat, the driving motor is connected with the controller, the output end of the driving motor is connected with the input end of the speed reducer, the output end of the speed reducer is connected with the transmission screw rod, the transmission screw rod is rotatably and limitedly connected with the fixed seat, the sliding part is in threaded connection with the transmission screw rod, and the sliding part is in sliding connection with the fixed seat;

the displacement detection mechanism comprises a grating ruler and a grating ruler reading head, the grating ruler is connected with the sliding part, the grating ruler reading head is arranged on the fixed seat and at a position corresponding to the grating ruler, and the grating ruler reading head is connected with the controller.

3. The precision grinding mechanism for micro drill processing according to claim 2, characterized in that: the fixing base is provided with two V-shaped guide rails in parallel, two sides of the sliding part are respectively provided with a V-shaped guide strip, and the V-shaped guide strips are clamped into the V-shaped guide rails in sliding connection.

4. The precision grinding mechanism for micro drill processing according to any one of claims 1 to 3, characterized in that: the supporting mechanism comprises a sliding table and a vertical plate, the sliding table is connected with the sliding piece, the fixing seat is provided with a sealing piece, and the other end of the sealing piece is connected with the sliding table.

5. The precision grinding mechanism for micro drill processing according to claim 4, characterized in that: the vertical plate is provided with a mounting plate, the mounting plate is connected with the vertical plate in an adjustable limiting manner, the mounting plate is provided with a lifting adjusting mechanism, the lifting adjusting mechanism is connected with the rotary driving mechanism, the lifting adjusting mechanism is used for adjusting the mounting height of the grinding wheel, and the adjusting base is connected with the mounting plate.

6. The precision grinding mechanism for micro drill processing according to claim 5, characterized in that: the adjusting base comprises a bracket, an adjusting frame and clamping blocks, one end of the bracket is hinged to the mounting plate, an arc-shaped sliding groove is formed in the mounting plate, a limiting bolt is arranged on one side, away from the hinged end, of the bracket, the limiting bolt can slide in the arc-shaped sliding groove, the limiting bolt is connected with the arc-shaped sliding groove in a limiting mode, the adjusting frame is connected with the bracket in a limiting mode, a dovetail seat is arranged on the adjusting frame, the clamping blocks are arranged on the dovetail seat in a sliding mode, and the grinding wheel piece is connected with the clamping blocks.

7. The precision grinding mechanism for micro drill processing according to claim 6, characterized in that: the adjustable lead screw clamping device is characterized in that a first adjusting lead screw is arranged on the clamping block, the first adjusting lead screw is connected with the clamping block in a rotatable limiting mode, an adjusting handle is arranged at one end of the first adjusting lead screw, the other end of the first adjusting lead screw is connected with an adjustable thread of the dovetail seat, a scale ring is arranged on the clamping block, the scale ring is sleeved on the outer side of the adjusting handle, and an indicating structure is arranged at the corresponding position of the scale ring on the adjusting handle.

8. The precision grinding mechanism for micro drill processing according to any one of claims 5 to 7, characterized in that: the lifting adjusting mechanism comprises an adjusting seat and a second adjusting screw rod, the adjusting seat is connected with the mounting plate, the second adjusting screw rod is connected with the adjusting seat in a rotatable limiting mode, a sliding block is arranged on the second adjusting screw rod in a sliding mode, the sliding block is connected with the rotary driving mechanism, and an adjusting hand wheel is arranged at one end of the second adjusting screw rod.

9. The precision grinding mechanism for micro drill processing according to claim 8, characterized in that: the rotary driving mechanism comprises a main shaft fixing seat and an electric main shaft, the main shaft fixing seat is connected with the sliding block, the electric main shaft is connected with the controller, the electric main shaft is connected with the main shaft fixing seat, and the grinding wheel is connected with the output end of the electric main shaft.

10. The precision grinding mechanism for micro-drilling according to claim 9, wherein: the spindle fixing seat is provided with a protective cover, the protective cover is sleeved on the outer side of the grinding wheel, and gaps are formed in the positions, corresponding to the grinding wheel, of the protective cover.

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