High-precision diamond pen grinding wheel dresser with micro-feeding function

Abstract

The invention belongs to the technical field of precision machining, and relates to a high-precision diamond pen grinding wheel dresser with a micro-feeding function, which comprises an outer shaft sleeve, an inner shaft, a feeding shaft sleeve, a feeding screw, a diamond pen sleeve, a diamond pen, a screw baffle plate, a dense ball and a dial. The outer shaft sleeve and the inner shaft are two matched parts which are formed by connecting dense beads after a cylindrical workpiece is linearly cut, and higher linear motion precision can be obtained by adopting a double-V dense bead guide rail structure; the feeding shaft sleeve and the inner shaft are connected in an interference fit mode, and it is guaranteed that no relative motion exists in the grinding wheel trimming process. The feeding shaft sleeve and the feeding screw adopt a fine thread close fit thread pair, so that the micro feeding of the diamond pen can be realized; an inner hole of the diamond pen sleeve is an irregular hole, the diamond pen is clamped in a one-point two-line mode by screwing down the second set screw, and the structure is more stable. The device is high in structural rigidity and finishing precision and convenient to operate, and has a reverse self-locking function.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of precision machining, and relates to a high-precision diamond pen grinding wheel dresser with a micro-feeding function. BACKGROUND

[0002] Grinding is a key link of finishing, and is the preferred process for carbon tool steel and carburizing and nitriding quenched steel parts due to its characteristics of small machining allowance and high machining precision. As the "tool" for grinding, the state performance of the grinding wheel directly affects the machining quality of the workpiece. The difference in linear speed of different positions of the grinding wheel leads to uneven wear, and especially in complex surface (such as symmetrical double-cone surface) grinding, the uneven wear will destroy the original geometric precision of the grinding wheel. In the traditional dressing process, the sliding guide rail has poor vibration absorption and weak rigidity, and is easy to cause the grinding wheel surface to produce chatter marks, thereby affecting the final machining precision of the workpiece. The grinding wheel will be worn, passivated or profile distorted during the grinding process, and needs to be dressed regularly. The dressing precision of the grinding wheel directly determines the surface quality and shape precision of the workpiece. The high-precision dresser can make the shape precision of the grinding wheel reach microns or even sub-microns, thereby meeting the demand of high-precision scenes.

[0003] The core requirement of the grinding wheel dresser is to restore the geometric shape, cutting performance and surface quality of the grinding wheel, so as to ensure the precision, efficiency and surface quality of the grinding. The diamond pen grinding wheel dresser is a precision structure, and its core function is to control the relative movement between the diamond pen and the grinding wheel to realize high-precision and high-efficiency dressing of the grinding wheel surface. The basic working principle is to guide the diamond pen to perform micro-cutting on the surface of the rotating grinding wheel according to the predetermined trajectory and parameters through a precise motion mechanism. The invention patent

CN107471114B

[0004] The principle of the screw micrometer is essentially to use the transmission characteristics of a precision fine thread pair to convert the rotary motion of the micrometer screw into linear motion, and the axial displacement is only one pitch after one rotation. Therefore, the axial micro-displacement can be realized by designing a thread pair with a smaller pitch. By using this characteristic of the screw micrometer, the precise micro-feeding driving of the diamond pen can be realized through a precision fine thread pair, so as to realize the precise feeding of the grinding wheel dresser.

[0005] The current diamond pen grinding wheel dresser only provides the clamping and fixing functions of the diamond pen, does not have the feeding function, relies on the movement of the machine tool to realize the grinding wheel dressing movement and the feeding movement, and the dressing feeding precision and the feeding amount are difficult to accurately control, and fine dressing of the grinding wheel cannot be realized. SUMMARY

[0006] To solve the problems of the prior art diamond pen grinding wheel dresser, such as no feeding function, difficult to accurately control the dressing feeding precision and the feeding amount, and unable to realize fine dressing of the grinding wheel, a high-precision diamond pen grinding wheel dresser with a micro-feeding function is provided, comprising: a diamond pen for dressing the grinding wheel; a diamond pen sleeve is sleeved on the middle part of the outer wall of the diamond pen; an inner shaft is sleeved on the end of the outer wall of the diamond pen;

[0007] A diamond pen sleeve side wall screw hole is arranged on the side wall of the diamond pen sleeve; a second locking screw is arranged in the diamond pen sleeve side wall screw hole; the diamond pen sleeve and the diamond pen are connected and fixed through the second locking screw;

[0008] An outer shaft sleeve is sleeved on the outer wall of the diamond pen sleeve and the inner shaft; two outer shaft sleeve right-angle V-shaped grooves with grooves at the bottom are arranged on the inner wall of the outer shaft sleeve along the axis direction; two inner shaft right-angle V-shaped grooves with grooves at the bottom are arranged on the outer wall of the inner shaft along the axis direction; two outer shaft sleeve right-angle V-shaped grooves and two inner shaft right-angle V-shaped grooves are matched with each other to form two groups of double-V-shaped guide rails; a plurality of dense beads are arranged in the two groups of double-V-shaped guide rails to form two groups of double-V-shaped bead structures;

[0009] A feeding shaft sleeve is sleeved on one end of the inner shaft; a feeding shaft sleeve shaft shoulder is arranged on one end of the feeding shaft sleeve; a feeding shaft sleeve internal thread is arranged in the feeding shaft sleeve; a feeding screw is sleeved in the feeding shaft sleeve; one end of the feeding screw is a feeding screw cylindrical surface, and the other end is a feeding screw external thread; a feeding screw shaft shoulder is arranged between the feeding screw cylindrical surface and the feeding screw external thread; a feeding screw hemisphere is arranged on one end surface of the feeding screw external thread; the feeding shaft sleeve internal thread and the feeding screw external thread form a feeding thread pair;

[0010] A screw baffle and a scale disc are sequentially sleeved on the feeding screw cylindrical surface; the screw baffle and one end surface of the outer shaft sleeve are fixedly connected through threads; a scale disc shaft shoulder is arranged in the middle of the scale disc; a scale disc side wall screw hole is arranged on the outer end side wall of the scale disc; a first locking screw is arranged in the scale disc side wall screw hole; the scale disc and the feeding screw sleeved therein are connected and fixed through the first locking screw.

[0011] According to the high-precision diamond pen grinding wheel dresser with micro-feeding function, the inner hole of the diamond pen sleeve is an irregular hole, so that the inner wall of the inner hole of the diamond pen sleeve and the outer wall of the diamond pen form two line contacts; the outer wall of the diamond pen and the second locking screw point contact, thereby forming a point and two line fixation of the diamond pen.

[0012] According to the high-precision diamond pen grinding wheel dresser with micro-feeding function, the inner hole of the diamond pen sleeve is an irregular hole, so that the inner wall of the inner hole of the diamond pen sleeve and the outer wall of the diamond pen form two line contacts; the outer wall of the diamond pen and the second locking screw point contact, thereby forming a point and two line fixation of the diamond pen.

[0013] According to the high-precision diamond pen grinding wheel dresser with micro-feeding function, the inner hole of the diamond pen sleeve is an irregular hole, so that the inner wall of the inner hole of the diamond pen sleeve and the outer wall of the diamond pen form two line contacts; the outer wall of the diamond pen and the second locking screw point contact, thereby forming a point and two line fixation of the diamond pen.

[0014] According to the high-precision diamond pen grinding wheel dresser with micro-feeding function, the outer shaft sleeve is a hollow cylindrical structure, the inner shaft is a hollow cylindrical structure, and the two groups of double-V-shaped guide rails between the inner wall of the outer shaft sleeve and the outer wall of the inner shaft are in interference fit with the dense beads; the dense beads can roll in the two groups of double-V-shaped guide rails.

[0015] The V-shaped guide rail has a smaller friction coefficient than the sliding friction of the surface contact; the double-V-shaped dense bead structure eliminates the gap between the outer shaft sleeve and the inner shaft, suppresses the relative rotational motion between the outer shaft sleeve and the inner shaft, can maintain high straightness, and has high structural rigidity;

[0016] According to the high-precision diamond pen grinding wheel dresser with micro-feeding function, the feeding shaft sleeve drives the inner shaft to move axially; the inner thread of the feeding shaft sleeve and the outer thread of the feeding screw are both fine threads, forming a fine thread pair, and the feeding screw can micro-adjust the axial feeding amount of the feeding shaft sleeve through the fine thread pair.

[0017] According to the high-precision diamond pen grinding wheel dresser with micro-feeding function, the diamond pen sleeve is coaxially fixedly connected with the inner shaft.

[0018] According to the high-precision diamond pen grinding wheel dresser with micro-feeding function, the screw baffle is fixedly connected with one end of the outer shaft sleeve by a thin head inner hexagonal screw; when the outer shaft sleeve and the inner shaft move relatively, the dense beads roll purely in the two groups of double-V-shaped guide rails between the inner wall of the outer shaft sleeve and the outer wall of the inner shaft.

[0019] According to the high-precision diamond pen grinding wheel dresser with micro-feeding function described above, the outer shaft sleeve and the inner shaft are formed by wire cutting of a cylindrical workpiece.

[0020] According to the high-precision diamond pen grinding wheel dresser with micro-feeding function described above, the 2 sets of double V-shaped guide rails between the inner wall of the outer shaft sleeve and the outer wall of the inner shaft are in interference fit with the interference amount of 1-5 mu; the outer shaft sleeve right-angle V-shaped groove and the inner shaft right-angle V-shaped groove are finely ground, and the plane precision is all less than or equal to 1 mu, thereby improving the linear precision of the movement of the inner shaft relative to the outer shaft sleeve; the fine tooth screw thread pair of the feeding shaft sleeve and the feeding screw is in cooperation, and the pitch is 0.2-0.5 mm; the fine tooth screw thread pair has an extremely fine pitch, and the resolution of the manual feeding is improved; the fine tooth screw thread pair is in tight fit with certain damping, so as to avoid the influence of the axial gap of the fine tooth screw thread pair on the positioning reliability and high rigidity of the diamond pen; the scale disc is provided with uniformly distributed scales for indicating the feeding amount.

[0021] The beneficial effects of the present application are as follows: 1. Significantly improve the dressing movement precision and stability. The present application adopts two sets of double V-shaped dense bead rolling structure to replace the traditional sliding guide rail, and the dense bead and the two sets of double V-shaped structure guide rail are in interference fit (interference amount 1-5 mu), which effectively eliminates the movement gap and improves the movement straightness and repeat positioning accuracy. Compared with the face contact sliding guide rail in the prior art (such as the single V-shaped plastic guide rail adopted in patent CN107471114B), the rolling friction coefficient is lower, the movement is more stable, the chattering and profile distortion caused by insufficient guide rail stiffness are avoided, thereby significantly improving the precision and surface quality of the grinding wheel dressing, especially suitable for high-precision complex surface dressing.

[0022] 2. Realize micron-level precise feeding and self-locking function. The present application adopts a fine tooth tight fit screw thread pair with a pitch of 0.2-0.5 mm to drive the feeding shaft sleeve, realizes a micro-feeding amount of 0.2-0.5 mm per turn, and has high feeding resolution. The screw thread pair has reverse self-locking characteristics, which can effectively prevent the back error in the dressing process and ensure the stability of the feeding. Compared with the existing dresser which depends on the machine tool feeding, the present application realizes the precise micro-feeding function of the dresser itself, and the feeding control is more independent and accurate, which is suitable for ultra-precision dressing scenes with extremely high feeding amount requirements.

[0023] 3. Enhance the structural rigidity and movement consistency. The outer shaft sleeve and the inner shaft are cut by the same cylindrical wire, which ensures the geometric consistency of the two sets of double V-shaped guide rails and avoids assembly errors; the two sets of double V-shaped guide rails constrain the relative rotation of the outer shaft sleeve and the inner shaft, ensuring that the posture of the diamond pen is consistent during the dressing process without deflection error. The interference fit of the dense beads further improves the overall rigidity, so that the deformation is very small when bearing the dressing force. Compared with the traditional sliding guide rail structure, the present application significantly improves the rigidity and stability of the system while ensuring high straightness, which is suitable for high-strength and high-frequency dressing operations.

[0024] 4. The diamond pen is clamped stably and reliably, and has high positioning accuracy. The diamond pen sleeve adopts a "one point and two line" compression structure, pressure is applied through a locking screw to form a triangular stable contact, which not only ensures clamping rigidity, but also avoids deformation or deviation of the pen body. The present application ensures the consistency of the diamond pen and the axis of the dresser, and improves the accuracy of the dressing track. Compared with the traditional simple clamping method, the present application has high rigidity and repeated clamping accuracy, and is suitable for multi-variety, small-batch and high-precision dressing tasks.

[0025] 5. The operation is simple, widely applicable and low in maintenance cost. The present application integrates micro-feeding and dressing movement, and the operation is intuitive and easy to control through the visual scale disc, which reduces the dependence on the feeding system of the machine tool and reduces the operation difficulty and training cost. The structure is highly modular, and the two groups of double V-shaped guide rails can be repaired manually by oilstone, which is simple and low in cost. The overall structure is compact and has good rigidity, and can be adapted to various grinding machine equipment, thereby expanding the application scene to realize fine dressing of the grinding wheel. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the grinding wheel dresser of the present application.

[0027] Figure 2 It is a schematic diagram of the outer shaft sleeve.

[0028] Figure 3 It is a schematic diagram of the inner shaft.

[0029] Figure 4 It is a schematic diagram of the structure of the outer shaft sleeve and the inner shaft.

[0030] Figure 5 It is a schematic diagram of the planar structure of the outer shaft sleeve and the inner shaft.

[0031] Figure 6 It is a schematic diagram of the positioning of the diamond pen when the inner hole of the diamond pen sleeve is a two-segment arc structure.

[0032] Figure 7 It is a schematic diagram of the positioning of the diamond pen when the inner hole of the diamond pen sleeve is a circular arc and V-shaped groove structure.

[0033] Figure 8 It is a schematic diagram of the diamond pen sleeve.

[0034] Figure 9 It is a schematic diagram of the transmission assembly.

[0035] Figure 10 It is a schematic diagram of the feeding shaft sleeve.

[0036] Figure 11 It is a schematic diagram of the feeding screw.

[0037] In the diagram: 1-First set screw, 2-Digital dial, 3-Thin-head hex socket screw, 4-Outer bushing, 4-1-Outer bushing threaded hole, 4-2-Outer bushing right-angle V-groove, 4-3-Inner cylindrical surface of outer bushing, 5-Denim bead, 6-Second set screw, 7-Diamond pen, 8-Diamond pen sleeve, 8-1-Diamond pen sleeve sidewall threaded hole, 8-3-Diamond pen sleeve inner hole, 8-3-1-Large eccentric inner cylindrical surface of diamond pen sleeve, 8-3-2-Small eccentric inner cylindrical surface of diamond pen sleeve, 8-4-Diamond pen sleeve End face, 9-inner shaft, 9-1-outer cylindrical surface of inner shaft, 9-2-right angle V-groove of inner shaft, 9-3-cylindrical surface of inner hole of inner shaft, 9-4-stepped end face of inner shaft, 9-5-cylindrical surface of outer hole of inner shaft, 10-feed bushing, 10-1-internal thread of feed bushing, 10-2-outer cylindrical surface of feed bushing, 10-3-inner end face of shoulder of feed bushing, 10-4-cylindrical surface of shoulder of feed bushing, 11-screw baffle, 12-feed screw, 12-1-cylindrical surface of feed screw, 12-3-external thread of feed screw. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0039] like Figure 1 As shown: This embodiment of a high-precision diamond pen dressing device with micro-feed function includes an outer bushing 4; an inner shaft 9 within the outer bushing 4 maintains high linearity movement via beaded joints 5; one end of the inner shaft 9 is bonded to the diamond pen sleeve 8; a diamond pen 7 for dressing the grinding wheel is locked within the diamond pen sleeve 8 by a second set screw 6; a screw baffle 11 is fixed to one end of the outer bushing 4 by a thin-headed hexagonal socket screw 3; one side of the feed screw 12 is locked within the axis of the dial 2 by a first set screw 1, and the other side is connected to the feed bushing 1. 0. Through the fine thread pair, the two sides of the feed screw 12 are restricted to different areas by the screw baffle 11. During operation, the dial 2 is rotated at a certain angle according to the requirements. The dial 2 drives the feed screw 12 to rotate. The feed screw 12 converts the rotational motion into a small linear motion through the fine thread pair and transmits it to the feed sleeve 10. The feed sleeve 10 drives the inner shaft 9 to make the same small linear motion. The inner shaft 9 then transmits the linear motion to the diamond pen sleeve 8, finally realizing the micro-feed of the diamond pen 7, thereby achieving the purpose of grinding wheel finishing.

[0040] like Figure 1 , Figure 2As shown: the outer sleeve threaded hole 4-1 on the outer sleeve 4 is only arranged on one end face of the outer sleeve 4, and the screw baffle 11 is fixed on the end face of the outer sleeve 4 with the outer sleeve threaded hole 4-1 by the thin head hexagonal screw 3;

[0041] As shown in Figure 1 , Figure 11 As shown: one end face of the screw baffle 11 is fitted and assembled with the end face 12-2 of the feed screw shaft shoulder, and the feed screw cylindrical surface 12-1 is locked in the shaft center of the dial 2 by the first locking screw 1;

[0042] As shown in Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown: the outer sleeve 4 and the inner shaft 9 are cut by a cylindrical whole after being cut by a cylindrical whole, and two groups of double V-shaped dense bead structures are formed by the dense beads 5; the inner cylindrical surface 4-3 of the outer sleeve and the outer cylindrical surface 9-1 of the inner shaft are cut by a line after being cut by a line, which can avoid the precision influence of the line cutting processing error during assembly; the inner wall of the outer sleeve 4 is provided with two groups of outer sleeve right-angle V-shaped grooves after being cut by a line, and the outer wall of the inner shaft 9 is provided with two groups of inner shaft right-angle V-shaped grooves; the inner shaft 9 slides in the outer sleeve 4 through the two groups of double V-shaped guide rails formed by the two pairs of outer sleeve right-angle V-shaped grooves 4-2 and inner shaft right-angle V-shaped grooves 9-2 matched with each other through the dense beads 5; the dense beads 5 are in interference fit with the inner shaft 9 and the outer sleeve 4, and the interference amount is 2-3 μm;

[0043] As shown in Figure 1 , Figure 8 As shown: the end face 8-4 of the diamond pen sleeve and the inner shaft 9 are bonded together by strong glue, and the outer diameter of the diamond pen sleeve 8 is equal to the outer diameter of the inner shaft 9, so as to ensure that the shaft centers of the diamond pen sleeve 8 and the inner shaft 9 are on the same straight line during bonding;

[0044] The diamond pen sleeve inner hole 8-3 of the diamond pen sleeve 8 is an irregular hole, so that the inner wall of the diamond pen sleeve inner hole 8-3 and the outer wall of the diamond pen 7 form two line contacts; the outer wall of the diamond pen 7 and the second locking screw 6 are in point contact, thereby forming one-point two-line fixation of the diamond pen 7.

[0045] As shown in Figure 6 The diamond pen sleeve inner hole 8-3 can be two cylindrical surfaces with different radii; the diamond pen sleeve side wall threaded hole 8-1 is arranged in the middle of the large-radius cylindrical surface and opposite to the small-radius cylindrical surface; after the second locking screw 6 locks the diamond pen 7, the outer wall of the diamond pen 7 and the small-radius cylindrical surface form two line contacts.

[0046] As shown in Figure 7As shown in the figure: the inner hole 8-3 of the diamond pen sleeve can also be a combination structure of a cylindrical surface and a V-shaped groove with a recessed bottom of the diamond pen sleeve inner hole, and the side wall threaded hole 8-1 of the diamond pen sleeve is arranged in the middle of the cylindrical surface; after the second locking screw 6 locks the diamond pen 7, the outer wall of the diamond pen 7 and the V-shaped surface of the V-shaped groove of the diamond pen sleeve inner hole form two line contacts.

[0047] The second locking screw 6 presses the diamond pen 7 through the side wall threaded hole 8-1 of the diamond pen sleeve, and the pressing structure is one point and two line pressing, the triangular structure is stable, and the axis of the diamond pen 7 is consistent with the axis of the diamond pen grinding wheel dresser, so that the structure is more stable.

[0048] As shown in Figure 3 、 Figure 9 、 Figure 10 、 Figure 11 As shown in the figure: the inner hole of the inner shaft 9 is a stepped hole; the cylindrical surface 9-5 of the outer hole of the inner shaft 9 and the feed shaft sleeve shoulder cylindrical surface 10-4 of the feed shaft sleeve 10 are in interference fit, the stepped hole end face 9-4 of the inner shaft 9 and the feed shaft sleeve shoulder inner end face 10-3 of the feed shaft sleeve 10 are tightly attached to each other, and the inner hole cylindrical surface 9-3 of the inner shaft and the feed shaft sleeve outer cylindrical surface 10-2 of the feed shaft sleeve 10 are in clearance fit;

[0049] The feed shaft sleeve 10 and the feed screw 12 are connected and driven through the feed shaft sleeve inner thread 10-1 and the feed screw outer thread 12-3; according to the transmission characteristics of the micrometer precision screw pair, the micro-feeding can be realized, and the reverse self-locking function is also realized in this embodiment by using a fine tooth tight fit screw pair;

[0050] The screw baffle 11 is connected with the outer shaft sleeve 4 through four thin head inner hexagonal screws 3;

[0051] The number of connecting sealing beads 5 between the outer shaft sleeve 4 and the inner shaft 9 is only schematic, which can be increased or decreased according to the actual situation;

[0052] According to the effect of dressing the grinding wheel, the two groups of double V-shaped guide rails in the middle of the outer shaft sleeve 4 and the inner shaft 9 are finely dressed, and the fine dressing method is to finely grind the rail surface of each two groups of double V-shaped guide rails back and forth by using two right angle edges of a cuboid oil stone, and the perpendicularity of the two right angle edges of the oil stone can ensure the accuracy of fine dressing of each two groups of double V-shaped guide rails.

[0053] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change within the technical range disclosed by the present application according to the technical solution and inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A high-precision diamond pen grinding wheel dresser with micro-feeding function, characterized in that, It includes: The diamond pen (7) of the dressing grinding wheel; The middle of the outer wall of the diamond pen (7) is sleeved with a diamond pen sleeve (8); The end of the outer wall of the diamond pen (7) is sleeved with an inner shaft (9); The side wall of the diamond pen sleeve (8) is provided with a diamond pen sleeve side wall threaded hole (8-1); The second locking screw (6) is arranged in the diamond pen sleeve side wall threaded hole (8-1); The diamond pen sleeve (8) and the diamond pen (7) are connected and fixed through the second locking screw (6); The outer wall of the diamond pen sleeve (8) and the inner shaft (9) is sleeved with an outer shaft sleeve (4); The inner wall of the outer shaft sleeve (4) is provided with two outer shaft sleeve right-angle V-shaped grooves (4-2) with grooves at the bottom in the axial direction; The outer wall of the inner shaft (9) is provided with two inner shaft right-angle V-shaped grooves (9-2) with grooves at the bottom in the axial direction; Two outer shaft sleeve right-angle V-shaped grooves (4-2) and two inner shaft right-angle V-shaped grooves (9-2) are matched to form two groups of double-V-shaped guide rails; A plurality of dense beads (5) are arranged in the two groups of double-V-shaped guide rails to form two groups of double-V-shaped bead structures; The inner end of the inner shaft (9) is sleeved with a feeding shaft sleeve (10); The one end of the feeding shaft sleeve (10) is provided with a feeding shaft sleeve shaft shoulder; The inner part of the feeding shaft sleeve (10) is provided with a feeding shaft sleeve internal thread (10-1); The inner part of the feeding shaft sleeve (10) is sleeved with a feeding screw (12); The one end of the feeding screw (12) is a feeding screw cylindrical surface (12-1), and the other end is a feeding screw external thread (12-3); A feeding screw shaft shoulder is arranged between the feeding screw cylindrical surface (12-1) and the feeding screw external thread (12-3); The one end surface of the feeding screw external thread (12-3) of the feeding screw (12) is provided with a feeding screw hemisphere; The feeding shaft sleeve internal thread (10-1) and the feeding screw external thread (12-3) form a feeding thread pair; The feeding screw cylindrical surface (12-1) is sequentially sleeved with a screw baffle (11) and a dial (2); The screw baffle (11) is threadedly connected and fixed with the one end surface of the outer shaft sleeve (4); The middle part of the dial (2) is provided with a dial shaft shoulder, and the outer end side wall of the dial is provided with a dial side wall threaded hole; The first locking screw (1) is arranged in the dial side wall threaded hole; The dial (2) and the feeding screw (12) sleeved therein are connected and fixed through the first locking screw (1).

2. The high-precision diamond pen grinding wheel dresser with micro-feeding function according to claim 1, characterized in that, The diamond pen sleeve inner hole (8-3) of the diamond pen sleeve (8) sleeved with the diamond pen (7) is an irregular hole, so that the inner wall of the diamond pen sleeve inner hole (8-3) and the outer wall of the diamond pen (7) form two line contacts; The outer wall of the diamond pen (7) and the second locking screw (6) point contact, thereby forming one-point two-line fixation of the diamond pen (7).

3. The high-precision diamond pen grinding wheel dresser with micro-feeding function according to claim 2, characterized in that, The diamond pen sleeve inner hole (8-3) is a relative two cylindrical surfaces with different radii; The diamond pen sleeve side wall threaded hole (8-1) is arranged in the middle of the large radius cylindrical surface and opposite to the small radius cylindrical surface; After the second locking screw (6) locks the diamond pen (7), the outer wall of the diamond pen (7) and the small radius cylindrical surface form two line contacts.

4. The high-precision diamond pen grinding wheel dresser with micro-feeding function according to claim 2, characterized in that, The inner hole (8-3) of the diamond pen sleeve is a combination structure of a cylindrical surface and a diamond pen sleeve inner hole V-shaped groove with a recessed bottom, and the side wall threaded hole (8-1) of the diamond pen sleeve is arranged in the middle of the cylindrical surface; after the second locking screw (6) locks the diamond pen (7), the outer wall of the diamond pen (7) and the V-shaped surface of the diamond pen sleeve inner hole V-shaped groove form two line contacts.

5. The high-precision diamond pen grinding wheel dresser with micro-feeding function according to claim 3 or 4, characterized in that, The outer sleeve (4) is a hollow cylindrical structure, the inner shaft (9) is a hollow cylindrical structure, and the two groups of double V-shaped guide rails between the inner wall of the outer sleeve (4) and the outer wall of the inner shaft (9) are in interference fit with the dense beads (5); the dense beads (5) can roll in the two groups of double V-shaped guide rails.

6. The high-precision diamond pen grinding wheel dresser with micro-feeding function according to claim 5, characterized in that, The feed sleeve (10) drives the inner shaft (9) to move axially; the feed sleeve inner thread (10-1) and the feed screw outer thread (12-3) are both fine thread, forming a fine thread pair, and the feed screw (12) can adjust the axial feed amount of the feed sleeve (10) through the fine thread pair.

7. The high-precision diamond pen grinding wheel dresser with micro-feeding function according to claim 6, characterized in that, The diamond pen sleeve (8) is coaxially fixedly connected with the inner shaft (9).

8. The high-precision diamond pen grinding wheel dresser with micro-feeding function according to claim 7, characterized in that, The screw baffle (11) is fixedly connected with one end of the outer sleeve (4) by a thin head inner hexagonal screw (3); when the outer sleeve (4) and the inner shaft (9) move relatively, the dense beads (5) make pure rolling in the two groups of double V-shaped guide rails between the inner wall of the outer sleeve (4) and the outer wall of the inner shaft (9).

9. The high-precision diamond pen grinding wheel dresser with micro-feeding function according to claim 8, characterized in that, The outer sleeve (4) and the inner shaft (9) are formed by wire cutting a cylinder.

10. The high-precision diamond pen grinding wheel dresser with micro-feeding function according to claim 9, characterized in that, The interference amount between the two groups of double V-shaped guide rails between the inner wall of the outer sleeve (4) and the outer wall of the inner shaft (9) and the dense beads (5) is 1-5μm; the outer sleeve right-angle V-shaped groove (4-2) and the inner shaft right-angle V-shaped groove (9-2) are finely ground, and the plane precision is ≤1μm; the fine thread pair of the feed sleeve (10) and the feed screw (12) has a pitch of 0.2-0.5mm; the scale disc (2) is provided with uniformly distributed scales for indicating the feed amount.

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