Oilstone push-out mechanism for honing device

Abstract

The oilstone ejecting mechanism for the honing device comprises an oilstone holder, oilstones, a radial expansion unit and piezoelectric ceramics, the radial expansion unit is arranged on the inner side of the oilstone holder, the radial expansion unit and the oilstone holder are coaxially arranged, the oilstones are evenly connected to the oilstone holder in an inserted mode, the inner sides of all the oilstones abut against the radial expansion unit in an elastic mode, and the piezoelectric ceramics are arranged on the oilstone holder. The piezoelectric ceramics are fixed in the oilstone retainer, the piezoelectric ceramics are electrified to deform and enable the radial expansion units to axially displace, and the radial expansion units axially displace and push the oilstones to radially displace. The radial displacement of the oilstone is supplied through piezoelectric ceramic deformation, a complex mechanical transmission structure does not need to be arranged, a complex oil way structure does not need to be arranged either, the overall structural design is ingenious and reasonable, redundancy is avoided, and operation is stable.

Description

Technical Field

[0001] The utility model relates to an oil stone pushing mechanism for a honing device. Background Art

[0002] The existing honing oilstone feeding motion control mainly includes two modes: electronic hydraulic feeding and electronic mechanical feeding. The electronic hydraulic feeding requires a complex oil circuit and has high maintenance costs. The electronic mechanical feeding structure is mainly a wedge block structure driven by a screw. The screw mechanism is set on the inner side of the oilstone retainer. The overall structure is redundant and complex. Therefore, it is necessary to improve the existing technology to solve the shortcomings of the existing technology. Summary of the invention

[0003] The utility model provides an oilstone pushing mechanism for a honing device in order to solve the problems existing in the prior art.

[0004] The technical solutions adopted in this utility model are:

[0005] A whetstone pushing mechanism for a honing device comprises an whetstone holder, an whetstone, a radial expansion unit and piezoelectric ceramics, wherein the radial expansion unit is placed inside the whetstone holder and the two are coaxially arranged, a plurality of whetstones are evenly inserted into the whetstone holder, and the inner sides of all the whetstones elastically contact the radial expansion unit, and the piezoelectric ceramics are fixed in the whetstone holder. When the piezoelectric ceramics are energized, they are deformed and the radial expansion unit is displaced axially, and the radial expansion unit is displaced axially and pushes the whetstone to be displaced radially.

[0006] Furthermore, the oilstone retainer is evenly distributed with a number of slots in the circumferential direction, the inner side of each oilstone is fixed to an oilstone seat, the oilstone seat is inserted into the slot, two annular springs are arranged in the oilstone retainer, the two annular springs are sleeved on all the oilstone seats, and the oilstone seats are elastically pressed against the radial expansion unit.

[0007] Furthermore, the radial expansion unit includes an expansion shaft and a compression spring. The outer wall surface of the expansion shaft and the inner wall surface of the oilstone seat are both provided with inclined surfaces, and the inclined surfaces of the two cooperate with each other. The compression spring is arranged coaxially with the expansion shaft, and the compression spring and the piezoelectric ceramic are arranged on both sides of the expansion shaft. When the piezoelectric ceramic is energized, it deforms and causes the expansion shaft to displace axially and compresses the compression spring. The inclined surface of the expansion shaft and the inclined surface of the oilstone seat slide relative to each other and cause the oilstone seat to displace radially.

[0008] Furthermore, fixed end covers are fixed at both ends of the oilstone retainer, and a guide shaft is provided on the inner end surface of one of the fixed end covers, and the compression spring and the expansion shaft are both sleeved on the guide shaft, and one end of the compression spring abuts against the fixed end cover on the corresponding side, and the other end abuts against the expansion shaft.

[0009] Furthermore, the piezoelectric ceramic is composed of a plurality of rectangular piezoelectric ceramic sheets stacked together, and rectangular holes are provided on the inner wall surface of the other fixed end cover and the end surface of the expansion shaft away from the compression spring, and the two ends of the piezoelectric ceramic are assembled in the two rectangular holes.

[0010] The utility model has the following beneficial effects:

[0011] The radial displacement of the oilstone is "supplied" through the deformation of piezoelectric ceramics. There is no need to set up a complex mechanical transmission structure or a complex oil circuit structure. The overall structural design is ingenious and reasonable, without redundancy and stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of the utility model.

[0013] Figure 2 Exploded view of the oilstone retainer and oilstone.

[0014] Figure 3 This is the assembly drawing of the oilstone seat and the expansion shaft.

[0015] Figure 4 This is an exploded view of the utility model. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] like Figures 1 to 4 The utility model discloses an oilstone pushing mechanism for a honing device, comprising an oilstone holder 51, an oilstone 52, a radial expansion unit 61 and a piezoelectric ceramic 62. The radial expansion unit 61 is arranged on the inner side of the oilstone holder 51 and is coaxially arranged with the oilstone holder 51. A plurality of oilstones 52 are evenly inserted into the oilstone holder 51, and the inner sides of all the oilstones 52 are in contact with the radial expansion unit 61. The piezoelectric ceramic 62 is fixed in the oilstone holder 51. The oilstone holder 51 drives the piezoelectric ceramic 62 and the radial expansion unit 61 to rotate together. The piezoelectric ceramic 62 is energized to deform and cause the radial expansion unit 61 to displace axially. During the axial displacement of the radial expansion unit 61, the oilstone 52 is driven to displace radially.

[0018] When the oilstone holder 51 rotates, the oilstone 52 needs to move radially and contact the inner wall of the pipe to achieve grinding. The radial movement of the oilstone 52 is achieved by mechanical linkage, and the force source of its axial movement is achieved by converting electrical energy into mechanical energy through piezoelectric ceramics 62. The specific structure and action principle are as follows:

[0019] A plurality of slots 510 are evenly distributed in the circumferential direction of the oilstone holder 51. The slots 510 are arranged along the axial direction of the oilstone holder 51. An oilstone seat 521 is inserted into the slot 510. An oilstone 52 is fixed to the top of each oilstone seat 521. Two annular springs 513 are arranged in the oilstone holder 51. The two annular springs 513 are sleeved on all the oilstone seats 521 and elastically press the oilstone seats 521 against the radial expansion unit 61.

[0020] The radial expansion unit 61 includes an expansion shaft 611 and a compression spring 612. The expansion shaft 611 is provided with a conical step portion, and the bottom surface of the oilstone seat 521 is provided with an inclined surface adapted to the conical surface of the conical step portion, and the inclined surfaces of the two are in contact with each other. The compression spring 612 is arranged coaxially with the expansion shaft 611, and the compression spring 612 and the piezoelectric ceramic 62 are arranged on both sides of the expansion shaft 611. When the piezoelectric ceramic 62 is energized, it deforms in the axial direction and causes the expansion shaft 611 to axially displace and compress the compression spring 612. When the expansion shaft 611 is displaced, the inclined surface of the expansion shaft 611 slides relative to the inclined surface of the oilstone seat 521 and causes the oilstone seat 521 to radially displace. When a reverse current is passed through the piezoelectric ceramic 62, the mechanical deformation of the piezoelectric ceramic 62 is restored, and the compression spring 612 and the annular spring 513 are reset together, and finally the oilstone seat 521 is reset.

[0021] In order to achieve better installation of the radial expansion unit 61 and the piezoelectric ceramic 62 and ensure a more reasonable structural layout, fixed end caps 511 are fixed at both ends of the oilstone retainer 51, and a guide shaft 514 is provided on the inner end surface of the left fixed end cap 511. The compression spring 612 and the expansion shaft 611 are both sleeved on the guide shaft 514, and one end of the compression spring 612 abuts against the fixed end cap 511 on the left, and the other end abuts against the step surface of the conical step portion of the expansion shaft 611. When the piezoelectric ceramic 62 undergoes mechanical deformation, the guide shaft 514 guides the axial displacement of the expansion shaft 611.

[0022] The piezoelectric ceramic 62 in the utility model is formed by stacking a number of piezoelectric ceramic sheets. The piezoelectric ceramic 62 converts mechanical energy and electrical energy into each other (piezoelectric effect). When in use, it is required to "extend" in a certain direction. It only needs to be assembled in a corresponding appropriate direction. The principle of the corresponding piezoelectric ceramic 62 is not described in detail in the utility model. Since the radial expansion unit 61 needs to rotate synchronously with the oilstone holder 51 when in use, the piezoelectric ceramic 62 is used as a "connecting bridge" between the radial expansion unit 61 and the oilstone holder 51 in the utility model. Its structure is: a number of rectangular piezoelectric ceramic sheets are stacked to form the piezoelectric ceramic 62. At the same time, rectangular holes 6110 are provided on the inner wall surface of the right fixed end cover 511 and the right end surface of the expansion shaft 611. The two ends of the piezoelectric ceramic 62 are assembled in the two rectangular holes 6110. Through the connection of the piezoelectric ceramic 62, the radial expansion unit 61 and the oilstone holder 51 form a whole.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. An oilstone ejection mechanism for a honing device, characterized in that: The invention comprises an oilstone retainer (51), an oilstone (52), a radial expansion unit (61) and a piezoelectric ceramic (62); the radial expansion unit (61) is placed inside the oilstone retainer (51), and the two are coaxially arranged; a plurality of oilstones (52) are evenly inserted into the oilstone retainer (51), and the inner sides of all the oilstones (52) elastically contact the radial expansion unit (61); the piezoelectric ceramic (62) is fixed in the oilstone retainer (51); the piezoelectric ceramic (62) is energized to deform and cause the radial expansion unit (61) to move axially; the radial expansion unit (61) moves axially and pushes the oilstone (52) to move radially.

2. The oilstone ejection mechanism for a honing device according to claim 1, characterized in that: The oilstone retainer (51) is evenly distributed with a plurality of slots (510) in the circumferential direction. The inner side of each oilstone (52) is fixed to an oilstone seat (521). The oilstone seat (521) is inserted into the slot (510). Two annular springs (513) are arranged in the oilstone retainer (51). The two annular springs (513) are sleeved on all the oilstone seats (521) and elastically press the oilstone seats (521) against the radial expansion unit (61).

3. The oilstone ejection mechanism for a honing device according to claim 2, characterized in that: The radial expansion unit (61) comprises an expansion shaft (611) and a compression spring (612); an outer wall surface of the expansion shaft (611) and an inner wall surface of the oil stone seat (521) are both provided with inclined surfaces, and the inclined surfaces of the two cooperate with each other; the compression spring (612) and the expansion shaft (611) are coaxially arranged, and the compression spring (612) and the piezoelectric ceramic (62) are arranged on both sides of the expansion shaft (611); the piezoelectric ceramic (62) is energized to deform and cause the expansion shaft (611) to axially displace and compress the compression spring (612); the inclined surface of the expansion shaft (611) and the inclined surface of the oil stone seat (521) slide relative to each other and cause the oil stone seat (521) to radially displace.

4. The oilstone ejection mechanism for a honing device according to claim 3, characterized in that: Fixed end covers (511) are fixed at both ends of the oilstone retainer (51), and a guide shaft (514) is provided on the inner end surface of one of the fixed end covers (511). The compression spring (612) and the expansion shaft (611) are both sleeved on the guide shaft (514), and one end of the compression spring (612) abuts against the fixed end cover (511) on the corresponding side, and the other end abuts against the expansion shaft (611).

5. The oilstone ejection mechanism for a honing device according to claim 4, characterized in that: The piezoelectric ceramic (62) is formed by stacking a plurality of rectangular piezoelectric ceramic sheets. Rectangular holes (6110) are provided on the inner wall surface of the fixed end cover (511) on the other side and on the end surface of the expansion shaft (611) away from the compression spring. The two ends of the piezoelectric ceramic (62) are assembled in the two rectangular holes (6110).

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