CN115570509A - Diamond pen fine-tuning device - Google Patents

Abstract

The invention relates to the technical field of miniature bearing processing equipment, in particular to a diamond pen fine adjustment device which comprises a vertical frame, a sliding positioning mechanism, a clamping mechanism, a linkage mechanism and an adjusting mechanism. According to the invention, the grinding wheel can be clamped through the two clamping arms, the two moving blocks can be driven to move away from each other through the bidirectional lead screw, the moving blocks can drive the linkage rod to rotate, so that the moving blocks can drive the two positioning clamping plates to expand when moving, the sliding column can move on the cross rod when the clamping mechanism clamps the grinding wheel, the sliding column stops moving after the grinding wheel is completely clamped, the diamond pen is positioned at the center line position of the side edge of the grinding wheel, the initial position of the diamond drill can be determined while the sliding column is fixed on the cross rod by increasing the friction force between the positioning clamping plates and the cross rod, and the diamond pen can be quickly positioned at the center line position of the outer edge of the grinding wheel according to the grinding wheels with different thicknesses.

Description

Diamond pen fine-tuning device

technical field

The invention relates to the technical field of miniature bearing processing equipment, in particular to a diamond pen fine-tuning device.

Background technique

With the continuous miniaturization, light weight and thin wall of various industrial equipment and slewing devices, miniature bearings, as a member of the bearing family, are getting more and more attention and favor, and the market demand for miniature bearings is also increasing. strong. In fact, miniature bearings are widely used in military and civilian industries, such as office equipment, micro motors, dental drills, video recorder drums, rotary encoders, computer peripherals, optical fiber delivery devices, optical exposure devices, Precision testing instruments, micro-robots, micro-aircraft, etc.

The manufacture of miniature rolling bearings is mainly the processing of inner and outer rings, balls and cages. As far as the formation mechanism of bearing ring quality is concerned, the grinding process is the most important, because the size, shape and position accuracy of the ring parts are mainly guaranteed by the grinding process. At present, the grinding of miniature bearing rings is carried out on special bearing ring grinding machines, using stepping motors or servo motors to drive the axial reciprocating motion of the grinding wheel to process the inner and outer rings of the bearings, and the circles used for the processing of miniature bearings The side grinding wheel needs to be trimmed with a diamond pen before it can be ground. Before dressing the grinding wheel, the initial position of the diamond pen needs to be adjusted so that it is located at the center line outside the grinding wheel. According to the different thickness of the grinding wheel, it needs to be manually passed before each dressing. The measurement method adjusts the position of the diamond pen, but the measurement and adjustment method has poor accuracy, troublesome operation, low efficiency, and it is easy to make the round edge of the grinding wheel shift to one side.

Contents of the invention

In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a diamond pen fine-tuning device, which can clamp the grinding wheel through two clamping arms, and simultaneously drive the synchronous belt to roll through the synchronous wheel two, thereby driving the synchronous wheel The one and two-way screw rods rotate synchronously, and the two-way screw rods can drive the two moving blocks to move away from each other. The moving block will drive the linkage rod to rotate, so that when the moving block moves, it will drive the two positioning splints to expand. When the clamping mechanism clamps the grinding wheel, the sliding column will move on the cross bar. After the grinding wheel is completely clamped, the sliding column stops moving. At this time, the diamond pen is located at the center line of the side of the grinding wheel. The handle can drive the rotating shaft to rotate in the opposite direction. Since the rotating shaft is slidingly sleeved with a square column, it is not easy to push the clamping mechanism to move when the rotating handle is shaken, so as not to affect the position of the diamond pen. The rotating shaft that rotates in the opposite direction One will drive the two clamping arms and the grinding wheel to separate, and at the same time, the synchronous belt will drive the synchronous wheel one and the two-way screw to rotate in the opposite direction, thereby driving the two moving blocks to approach each other, thereby driving the two sliding columns The positioning splints on the side gradually move closer and will eventually fit the crossbar. The closer the positioning splint is to the crossbar, the pressure on the rubber strip will increase, which will increase the friction between the positioning splint and the crossbar, so that the sliding column It is fixed on the cross bar and the initial position of the diamond drill is determined, so that the diamond pen can be quickly positioned at the center line outside the grinding wheel according to different thicknesses of the grinding wheel, and the operation is simple and the positioning accuracy is high; by adjusting the circle of the grinding wheel When the size of the side can be adjusted, the rotating column can be moved, so that the positioning ring is firstly connected with the fixed block, so that the position of the swinging column can be limited, making it difficult to move laterally, and then the adjusting screw is driven by the handle to rotate, so that it can be driven The sliding block slides in the limit plate, so as to adjust the distance between the swing column and the output shaft of the servo motor. When the distance is larger, the round edge of the grinding wheel is flatter; Large, when dressing the grinding wheel, it is necessary to keep the rotating column upright, and the servo motor drives the swinging column to reciprocate and slowly swing, so as to continuously adjust the direction of the diamond pen.

The purpose of the present invention can be achieved through the following technical solutions:

Diamond pen fine adjustment device, including

A stand; the stand includes two positioning plates, a cross bar is fixedly connected between the two positioning plates, and two rolling grooves are symmetrically opened on the outer wall of the cross bar;

Sliding positioning mechanism, the sliding positioning mechanism includes a sliding column that is slidably socketed with the cross bar, and both ends of the sliding column are symmetrically fixedly connected with two and four fixing seats with respect to the vertical center plane, and adjacent A positioning splint is rotatably connected between the two fixed seats, and a bidirectional screw rod is rotatably connected to the side wall of the sliding column, and two bidirectional screw rods are symmetrically screwed and sleeved with respect to their vertical center planes. The side walls of the two moving blocks are symmetrically rotatably connected to one end of two linkage rods, and the other ends of the linkage rods are rotatably connected to a connecting rod fixedly connected to the positioning splint. The two-way wire The end of the rod is fixedly sleeved with a synchronous wheel one;

Clamping mechanism, the clamping mechanism is used to adjust the initial position of the device after clamping the grinding wheel before dressing the grinding wheel, and the clamping mechanism is fixed to the side wall of the sliding column along the length direction;

A linkage mechanism, the linkage mechanism is used to link the drive unit between the clamping mechanism and the sliding positioning mechanism, and the linkage mechanism is located between the clamping mechanism and the sliding positioning mechanism;

An adjustment mechanism, the adjustment mechanism is fixedly provided with a diamond pen, and the adjustment mechanism is used to adjust the swing radius of the diamond pen, so as to adjust the size of the round edge of the miniature bearing grinding wheel, and the adjustment mechanism is located at the top of the sliding positioning mechanism .

Further, the clamping mechanism includes an L-shaped plate fixedly connected to the side wall of the sliding column, a vertical plate is fixedly connected to the top end of the L-shaped plate, and a rotating shaft 1 is rotatably connected to the side wall of the vertical plate. Two worms are fixedly socketed on the outer wall of the rotating shaft 1, and the tops of the two worms are meshed and connected with worm wheels, and the centers of the two worm wheels are fixedly socketed with the rotating shaft 2 which is rotatably connected with the vertical plate. One end of the two rotating shafts 2 is fixedly sleeved with a rotating rod, and one end of the two rotating rods is connected with a clamping arm for rotation, and the two clamping arms are rotated and connected with the vertical plate to rotate. The connected connecting rod, the end of the rotating shaft 1 is fixedly sleeved with the synchronous wheel 2, and the opposite side walls of the two clamping arms are fixedly connected with buffer pads, passing through the opposite side walls of the two clamping arms A buffer pad is arranged on the top, so that the pressing force of the clamping arm on the grinding wheel can be buffered to prevent damage to the grinding wheel.

Further, the linkage mechanism includes a synchronous belt, one end of the synchronous belt is socketed with the synchronous wheel, and the other end of the synchronous belt is socketed with the synchronous wheel. Through the transmission of the synchronous belt, the synchronous wheel can be When one rotates, it will drive the second synchronous wheel to rotate.

Further, the adjustment mechanism includes a mounting plate fixedly connected to the top of the sliding column, a limiting plate is fixedly connected to the side wall of the mounting plate, a sliding block is slidably connected to the top of the limiting plate, and the sliding block The top is fixedly connected with a servo motor, and the output end of the servo motor is fixedly connected with a swing plate, and a limit slot is opened on the swing plate, and a limit block is slidably embedded in the limit slot, and a limit block is connected to the limit block. The top is fixedly connected with a swing column, the top of the swing column is fixedly socketed with the diamond pen, and an adjusting screw is screwed and socketed in the swing column, and the end of the adjusting screw is connected to the swing plate in rotation. The other end of the adjustment screw is fixedly connected with a handle. Through the adjustment mechanism, the trimming size of the round edge can be adjusted according to different grinding wheels, and the distance between the swing column and the output shaft of the servo motor can be adjusted. When the distance is larger, the circle of the grinding wheel The flatter the edge, the greater the rounded edge arc of the wheel as the distance decreases.

Further, both sides of the inside of the sliding column are filled with a plurality of balls that slide with the rolling grooves, and the inside of the sliding column is filled with balls that slide with the rolling grooves, so that the grinding wheel is clamped by the clamping arm. When it fits properly, the sliding column can slide on the cross bar to fine-tune the position of the diamond pen without causing excessive lateral force to the grinding wheel.

Further, four rubber strips are fixedly connected equidistantly on the arc-shaped inner wall of the positioning splint, and rubber strips are fixedly connected to the arc-shaped inner wall of the positioning splint, so that when the positioning splints are close together, the rubber strips will be applied. The extrusion force can increase the friction between the positioning splint and the cross bar, and indirectly fix the position of the sliding column.

Further, a square post is slidably inserted into one end of the rotating shaft one, and a rotating handle is fixedly connected to the end of the square post, and the square post is slidably inserted into the rotating shaft one, so that it is not easy to shake the rotating handle. Push the clamping mechanism to move together, so as not to affect the initial position positioning of the diamond pen.

Further, a horizontal plate is fixedly connected to the side wall of the swing column, a fixed block is fixedly connected to one end of the top of the horizontal plate, a rotating column is rotatably connected to the side wall of the installation plate, and the end of the rotating column The part is fixedly connected with a positioning ring that is socketed with the fixed block, and by keeping the rotating column flat, the positioning ring and the fixed block can be socketed, thereby limiting the position of the swinging column.

Beneficial effects of the present invention:

1. The grinding wheel can be clamped by two clamping arms, and the synchronous belt can be driven to roll by the synchronous wheel 2, so that the synchronous wheel 1 and the two-way screw can be driven to rotate synchronously, and the two-way screw can drive the The two moving blocks move away from each other, and the moving block will drive the linkage rod to rotate, so that when the moving block moves, it will drive the two positioning splints to expand, so that when the clamping mechanism clamps the grinding wheel, the sliding column will be in the horizontal position. Move on the rod, and the sliding column stops moving after the grinding wheel is completely clamped. At this time, the diamond pen is located at the center line of the side of the grinding wheel. By turning the handle in the opposite direction, it can drive the rotating shaft to rotate in the opposite direction. Because the rotating shaft is sliding The square column is socketed, so that it is not easy to push the clamping mechanism to move when the handle is shaken, so that the position of the diamond pen will not be affected. The rotating shaft that rotates in the opposite direction will drive the two clamping arms to separate from the grinding wheel, and at the same time pass The synchronous belt will drive the synchronous wheel 1 and the two-way screw to rotate in the opposite direction, thereby driving the two moving blocks to approach each other, thereby driving the positioning splints on both sides of the sliding column to gradually move closer, and finally will fit the cross bar. The closer the positioning splint is to the cross bar, the pressure on the rubber strip will increase, which will increase the friction between the positioning splint and the cross bar, so that the sliding column can be fixed on the cross bar and the initial position of the diamond can be determined. Grinding wheels of different thicknesses can quickly locate the diamond pen at the center line outside the grinding wheel, and the operation is simple and the positioning accuracy is high;

2. When it is necessary to adjust the size of the round edge of the grinding wheel, the rotating column can be moved, so that the positioning ring is firstly connected with the fixed block, so that the position of the swinging column can be limited, making it difficult to move laterally, and then driven by the handle Adjust the screw to rotate, so that the sliding block can be driven to slide in the limit plate, so as to adjust the distance between the swing column and the output shaft of the servo motor. When the distance is larger, the round edge of the grinding wheel will be flatter. When the distance is reduced Hours, the larger the round edge arc of the grinding wheel, the rotating column needs to be kept upright when the grinding wheel is trimmed, and the servo motor drives the swinging column to reciprocate and slowly swing, thereby continuously adjusting the direction of the diamond pen.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a schematic diagram of the overall structure of the present invention;

Fig. 2 is a schematic view of the overall top view structure of the present invention;

Fig. 3 is a schematic diagram of side view linkage structure in the present invention;

Fig. 4 is a schematic cross-sectional structure diagram of the neutral frame of the present invention;

Fig. 5 is a structural schematic diagram of a sliding positioning mechanism in the present invention;

Fig. 6 is a structural schematic diagram of the clamping mechanism in the present invention;

Fig. 7 is a structural schematic diagram of the adjustment mechanism in the present invention;

Fig. 8 is a schematic diagram of the structure of the swing column in the present invention.

Among the figure: 100, vertical frame; 101, positioning plate; 102, cross bar; 103, rolling groove; 200, sliding positioning mechanism; 201, sliding column; 202, ball; 203, fixed seat; 204, positioning splint; 205, Rubber strip; 206, two-way screw rod; 207, moving block; 208, linkage rod; 209, connecting rod; 210, synchronous wheel one; 300, clamping mechanism; 301, L-shaped plate; One; 304, worm; 305, worm gear; 306, rotating shaft two; 307, rotating rod; 308, clamp arm; 309, buffer pad; 310, connecting rod; 311, synchronous wheel two; 312, square column; 313, turn Handle; 400, linkage mechanism; 401, synchronous belt; 500, adjustment mechanism; 501, mounting plate; 502, limit plate; 503, sliding block; 504, servo motor; 508, swing column; 509, adjusting screw; 510, handle; 511, horizontal plate; 512, fixed block; 513, rotating column; 514, positioning ring; 600, diamond pen.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

See also shown in Fig. 1-8, diamond pen fine-tuning device, comprise stand 100; Stand 100 comprises two positioning plates 101, is fixedly connected with cross bar 102 between two positioning plates 101, and the outer wall of cross bar 102 is symmetrical There are two rolling grooves 103; a sliding positioning mechanism 200, the sliding positioning mechanism 200 includes a sliding column 201 that is slidably socketed with the cross bar 102, and both ends of the sliding column 201 are symmetrically fixedly connected with two vertical center planes. There are four fixed seats 203, and a positioning splint 204 is rotatably connected between adjacent two fixed seats 203, and a two-way screw mandrel 206 is rotatably connected on the side wall of the sliding post 201, and the two-way screw mandrel 206 is connected with its vertical central plane. Two moving blocks 207 are connected in a symmetrical screwing socket, and one end of two linkage rods 208 is connected symmetrically to each other on the side walls of the two moving blocks 207, and the other end of the linkage rod 208 is connected to a splint 204 corresponding to the positioning splint. The connecting rod 209 that is fixedly connected, the end of the two-way screw rod 206 is fixedly sleeved with a synchronous wheel 1 210; the clamping mechanism 300, the clamping mechanism 300 is used to clamp the grinding wheel before dressing the grinding wheel and then adjust the initial position of the device, The clamping mechanism 300 is fixed to the side wall of the sliding column 201 along the length direction; the linkage mechanism 400, the linkage mechanism 400 is used to link the drive unit between the clamping mechanism 300 and the sliding positioning mechanism 200, and the linkage mechanism 400 is located in the clamping Between the mechanism 300 and the sliding positioning mechanism 200; the adjustment mechanism 500, the diamond pen 600 is fixedly arranged on the adjustment mechanism 500, and the adjustment mechanism 500 is used to adjust the swing radius of the diamond pen 600, so that the round edge size of the miniature bearing grinding wheel can be adjusted and trimmed , the adjustment mechanism 500 is located at the top of the sliding positioning mechanism 200; both sides of the inside of the sliding column 201 are filled with a plurality of balls 202 that slide with the rolling groove 103, and the inside of the sliding column 201 is filled with balls 202 that slide with the rolling groove 103 ball 202, so that when the clamping arm 308 clamps the grinding wheel, the sliding column 201 can slide on the cross bar 102 to fine-tune the position of the diamond pen 600 without causing excessive lateral force to the grinding wheel; the positioning splint Four rubber strips 205 are fixedly connected equidistantly on the curved inner wall of 204, and the rubber strips 205 are fixedly connected to the curved inner wall of the positioning splint 204, so that when the positioning splints 204 are close together, the rubber strips 205 will be squeezed. The pressure can increase the friction between the positioning splint 204 and the cross bar 102 , and indirectly fix the position of the sliding column 201 .

6, the clamping mechanism 300 includes an L-shaped plate 301 fixedly connected to the side wall of the sliding column 201, a vertical plate 302 is fixedly connected to the top of the L-shaped plate 301, and a rotating shaft is rotatably connected to the side wall of the vertical plate 302. One 303, two worms 304 are fixedly socketed on the outer wall of the rotating shaft one 303, and the tops of the two worms 304 are meshed with a worm wheel 305, and the center positions of the two worm wheels 305 are fixedly socketed with a vertical plate 302 for rotation. Connected rotating shaft two 306, one end of the two rotating shafts 306 is fixedly sleeved with a rotating rod 307, and one end of the two rotating rods 307 is rotatably connected with a clamping arm 308, and the two clamping arms 308 are rotatably connected with a The vertical plate 302 is rotatably connected to the connecting rod 310, the end of the rotating shaft 303 is fixedly sleeved with a synchronous wheel 2 311, and the opposite side walls of the two clamping arms 308 are fixedly connected with a buffer pad 309, which passes through the two clamping arms. Cushion pads 309 are arranged on the opposite side walls of the joint arm 308, so as to buffer the extrusion force of the clamp arm 308 on the grinding wheel and prevent damage to the grinding wheel; The end of the rotating shaft 313 is fixedly connected with a rotating handle 313, and the square column 312 is slid and inserted in the rotating shaft 1 303, so that when the rotating handle 313 is shaken, the clamping mechanism 300 will not be easily pushed to move together, thereby not affecting the diamond pen. 600 initial position fixes.

Linkage mechanism 400 comprises synchronous belt 401, and one end of synchronous belt 401 is socketed with synchronous wheel 1 210, and the other end of synchronous belt 401 is socketed with synchronous wheel 2 311, through the transmission of synchronous belt 401, can make synchronous wheel 1 210 When rotating, the synchronous wheel 2 311 will be driven to rotate.

Referring to Figures 7-8, the adjustment mechanism 500 includes a mounting plate 501 fixedly connected to the top of the sliding column 201, a limiting plate 502 is fixedly connected to the side wall of the mounting plate 501, and a sliding block 503 is slidably connected to the top of the limiting plate 502. , the top of the sliding block 503 is fixedly connected with a servo motor 504, the output end of the servo motor 504 is fixedly connected with a swing plate 505, the swing plate 505 is provided with a limiting groove 506, and the limiting groove 506 is slidably embedded and connected with a limiting block 507, The top of the limit block 507 is fixedly connected with a swing post 508, the top of the swing post 508 is fixedly socketed with the diamond pen 600, and the swing post 508 is screwed and socketed with an adjustment screw 509, and the end of the adjustment screw 509 is connected to the swing plate. 505 is rotationally connected, and the other end of the adjusting screw rod 509 is fixedly connected with a handle 510. The adjustment mechanism 500 can adjust the trimming size of its round edge according to different grinding wheels, and adjust the distance between the swing column 508 and the output shaft of the servo motor 504. When the distance is larger, the round edge of the grinding wheel is flatter, and when the distance decreases, the round edge arc of the emery wheel is larger; the side wall of the swing column 508 is fixedly connected with a horizontal plate 511, and the top end of the horizontal plate 511 is fixedly connected with a Fixed block 512, the side wall of mounting plate 501 is connected with rotating column 513, and the end of rotating column 513 is fixedly connected with positioning ring 514 that is socketed with fixed block 512, by keeping rotating column 513 flat, can make The positioning ring 514 is socketed with the fixed block 512 so as to limit the position of the swing post 508 .

Working principle: When in use, after the grinding wheel is installed, the square column 312 can be driven to rotate together with the rotating shaft 303 through the rotating handle 313 in the clamping mechanism 300, and the two worms 304 on the outer wall of the rotating shaft 303 can be driven respectively. The two worm wheels 305 at the top rotate, so that the two rotating shafts 306 can be driven to rotate in opposite directions through the worm wheels 305, so that the two rotating shafts 307 can be driven to rotate by the rotating shaft 2 306, and the rotating shafts 307 on the left and right sides can be rotated. Can respectively drive two clamping arms 308 close to each other, because connecting rod 310 is connected simultaneously on clamping arm 308, thereby do parallelogram movement between clamping arm 308, rotating rod 307 and connecting rod 310, can keep two The opposite side walls of the two clamping arms 308 are always kept parallel, finally the grinding wheel can be clamped by the two clamping arms 308, and the synchronous wheel 2 311 can drive the synchronous belt 401 to roll simultaneously, thereby driving the synchronous wheel 1 210 and the two-way screw rod 206 rotate synchronously. The two-way screw rod 206 can drive the two moving blocks 207 to move away from each other. The moving block 207 will drive the linkage rod 208 to rotate, so that the moving block 207 will drive the two The positioning splint 204 expands, so that when the clamping mechanism 300 clamps the grinding wheel, the sliding column 201 will move on the cross bar 102, and the sliding column 201 will stop moving after the grinding wheel is completely clamped. At the midline position of the side;

Rotating the rotating handle 313 in the reverse direction can drive the rotating shaft one 303 to rotate in the opposite direction. Since the rotating shaft one 303 is slidingly sleeved with a square column 312, it is not easy to push the clamping mechanism 300 to move when the rotating handle 313 is shaken, thereby not affecting At the position of the diamond pen 600, the rotating shaft 1 303 rotating in the opposite direction will drive the two clamping arms 308 to separate from the grinding wheel, and at the same time, the synchronous belt 401 will drive the synchronous wheel 1 210 and the two-way screw mandrel 206 to rotate in reverse, thereby It will drive the two moving blocks 207 to approach each other, thereby driving the positioning splints 204 on both sides of the sliding column 201 to gradually move closer, and finally will fit the cross bar 102. The closer the positioning splints 204 are to the cross bar 102, the more the rubber The pressure of bar 205, thereby can increase the frictional force between locating splint 204 and cross bar 102, can fix sliding column 201 on cross bar 102 like this, have determined the initial position of diamond 600 simultaneously, can like this according to the emery wheel of different thickness The diamond pen 600 is quickly positioned at the center line outside the grinding wheel, and the operation is simple and the positioning accuracy is high;

When it is necessary to adjust the size of the round edge of the grinding wheel, the rotating column 513 can be moved, so that the positioning ring 514 is first connected with the fixed block 512, so that the position of the swinging column 508 can be limited, making it difficult to move laterally, and then through the handle 510 drives the adjustment screw 509 to rotate, thereby driving the sliding block 503 to slide in the limit plate 502, so as to adjust the distance between the swing column 508 and the output shaft of the servo motor 504. When the distance is larger, the circle of the grinding wheel The flatter the side, the larger the round edge arc of the grinding wheel when the distance is reduced. When dressing the grinding wheel, the rotating column 513 needs to be kept upright, and the servo motor 504 drives the swinging column 508 to reciprocate and slowly swing, so as to continuously adjust the grinding wheel. Pen 600 directions.

In the description of this specification, descriptions with reference to the terms "one embodiment", "example", "specific example" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment of the present invention. In an embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above content is only an example and description of the present invention. Those skilled in the art will make various modifications or supplements to the described specific embodiments or replace them in similar ways, as long as they do not deviate from the invention or exceed the rights of the present invention. The scope defined in the claims should all belong to the protection scope of the present invention.

Claims (8)

1. The diamond pen fine-tuning device is characterized by comprising

A stand (100); the vertical frame (100) comprises two positioning plates (101), a cross rod (102) is fixedly connected between the two positioning plates (101), and two rolling grooves (103) are symmetrically formed in the outer wall of the cross rod (102);

the sliding positioning mechanism (200) comprises a sliding column (201) which is in sliding sleeve connection with a cross rod (102), two ends of the sliding column (201) are symmetrically and fixedly connected with two fixed seats (203) about a vertical central plane of the sliding column, a positioning clamping plate (204) is rotatably connected between every two adjacent fixed seats (203), a bidirectional screw rod (206) is rotatably connected to the side wall of the sliding column (201), two moving blocks (207) are symmetrically and rotatably sleeved on the bidirectional screw rod (206) about the vertical central plane of the bidirectional screw rod, one ends of two linkage rods (208) are symmetrically and rotatably connected to the side wall of each of the two moving blocks (207), the other ends of the linkage rods (208) are rotatably connected with connecting rods (209) which are fixedly connected with the positioning clamping plate (204), and a first synchronizing wheel (210) is fixedly sleeved at the end part of each of the bidirectional screw rod (206);

the clamping mechanism (300) is used for clamping the grinding wheel before dressing the grinding wheel and then adjusting the initial position of the device, and the clamping mechanism (300) is fixed with the side wall of the sliding column (201) along the length direction;

the linkage mechanism (400) is used for linking the driving unit between the clamping mechanism (300) and the sliding positioning mechanism (200), and the linkage mechanism (400) is positioned between the clamping mechanism (300) and the sliding positioning mechanism (200);

the adjusting mechanism (500), the diamond pen (600) is fixedly arranged on the adjusting mechanism (500), the adjusting mechanism (500) is used for adjusting the swing radius of the diamond pen (600), so that the size of the round edge of the miniature bearing grinding wheel can be adjusted and trimmed, and the adjusting mechanism (500) is located at the top of the sliding positioning mechanism (200).

2. The diamond pen fine adjustment device according to claim 1, wherein the clamping mechanism (300) comprises an L-shaped plate (301) fixedly connected with a side wall of the sliding column (201), a vertical plate (302) is fixedly connected to a top end of the L-shaped plate (301), a first rotating shaft (303) is rotatably connected to a side wall of the vertical plate (302), two worms (304) are fixedly sleeved on an outer wall of the first rotating shaft (303), worm wheels (305) are respectively engaged and connected to top ends of the two worms (304), a second rotating shaft (306) rotatably connected with the vertical plate (302) is respectively fixedly sleeved at center positions of the two worm wheels (305), a rotating rod (307) is respectively fixedly sleeved at one end of the two rotating shafts (306), a clamping arm (308) is rotatably connected to one end of the two rotating shafts (307), a connecting rod (310) rotatably connected with the vertical plate (302) is respectively rotatably connected to the two clamping arms (308), a second synchronizing wheel (311) is fixed to an end of the first rotating shaft (303), and a buffer cushion pad (309) is fixedly connected to the two clamping arms (308).

3. A diamond pen fine adjustment device according to claim 2, wherein the linkage mechanism (400) comprises a synchronous belt (401), one end of the synchronous belt (401) is sleeved with a first synchronous wheel (210), and the other end of the synchronous belt (401) is sleeved with a second synchronous wheel (311).

4. The diamond pen fine adjustment device according to claim 1, wherein the adjusting mechanism (500) comprises a mounting plate (501) fixedly connected with the top of the sliding column (201), a limiting plate (502) is fixedly connected to the side wall of the mounting plate (501), a sliding block (503) is slidably connected to the top of the limiting plate (502), a servo motor (504) is fixedly connected to the top of the sliding block (503), a swing plate (505) is fixedly connected to the output end of the servo motor (504), a limiting groove (506) is formed in the swing plate (505), a limiting block (507) is connected to the limiting groove (506) in a sliding embedding manner, a swing column (508) is fixedly connected to the top of the swing column (508), the diamond pen (600) is fixedly sleeved on the top of the swing column (508), an adjusting screw rod (509) is sleeved in the swing column (508), the end of the adjusting screw rod (509) is rotatably connected with the swing plate (505), and a handle (510) is fixedly connected to the other end of the adjusting screw rod (509).

5. Diamond pen fine adjustment device according to claim 1, characterized in that both sides of the interior of said sliding column (201) are filled with a plurality of balls (202) sliding with rolling grooves (103).

6. A diamond pen fine adjustment device according to claim 1, characterized in that four rubber strips (205) are fixedly connected with equal distance on the arc inner wall of the positioning splint (204).

7. A diamond pen fine adjustment device according to claim 2, wherein one end of the first rotating shaft (303) is slidably inserted into a square column (312), and a rotating handle (313) is fixedly connected to the end of the square column (312).

8. A diamond pen fine adjustment device according to claim 4, wherein a transverse plate (511) is fixedly connected to the side wall of the swing column (508), a fixed block (512) is fixedly connected to one end of the top of the transverse plate (511), a rotation column (513) is rotatably connected to the side wall of the mounting plate (501), and a positioning ring (514) which is sleeved with the fixed block (512) is fixedly connected to the end of the rotation column (513).

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