CN212653320U - Clamp for manufacturing piezoelectric actuator - Google Patents

Abstract

The utility model provides an anchor clamps for making piezoelectric actuator, including base and retaining member, offer the recess that is used for placing the target piece on the base, the top of recess is equipped with the opening, and the target piece is placed in the recess through the opening, still sets up on the base correspond the recess setting and with the through-hole of recess intercommunication, the one end of retaining member is through the through-hole stretch into in the recess and the target piece in the locking recess. The process of manufacturing the piezoelectric actuator by adopting the clamp comprises the following steps: preliminarily bonding a plurality of chip porcelain bodies together through inorganic glue to obtain a stack structure; placing the stack structure into the groove through the opening of the groove, wherein one end of the locking piece extends into the groove through the through hole and abuts against the stack structure, so that the stack structure is prevented from being separated from the groove; placing the clamp and the stack structure on the clamp in a sintering furnace for sintering so as to solidify the glue; in the engineering of glue solidification, a plurality of chip porcelain bodies on the stack structure are aligned through the grooves, so that the chip porcelain bodies cannot be displaced, and the alignment precision of the chip porcelain bodies can be greatly improved.

Description

Clamp for manufacturing piezoelectric actuator

Technical Field

The utility model belongs to the technical field of piezoelectric actuator's preparation, more specifically say, relate to an anchor clamps for making piezoelectric actuator.

Background

The longitudinal piezoelectric actuator is a kind of element which utilizes the inverse piezoelectric effect to control the mechanical deformation of a piezoelectric body through an electric field so as to generate longitudinal linear motion, and is widely applied to the fields of aviation technology, measurement technology, precision machining, medical instruments and the like. Currently, the most widely used longitudinal piezoelectric actuator is a large stroke actuator stack with a height greater than 10 mm. A discrete stack made by bonding a plurality of chip porcelain bodies together by glue is one of the most common structures. However, when a plurality of chip ceramic bodies are bonded together by glue, the chip ceramic bodies are difficult to be aligned and cured, which easily causes defects in the manufactured discrete piezoelectric actuator stack.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide an anchor clamps for making piezoelectric actuator to solve the technical problem that the counterpoint precision of the discrete piezoelectric actuator storehouse of prior art chip porcelain body is low in the manufacturing process.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides an anchor clamps for making piezoelectric actuator, includes base and retaining member, offer the recess that is used for placing the target piece on the base, the top of recess is equipped with the opening, the target piece warp the opening place in the recess, the target piece is including the target unit of range upon range of setting, each the same side of target unit is all hugged closely the diapire setting of recess, still seted up on the base and corresponded the recess set up and with the through-hole of recess intercommunication, the one end warp of retaining member the through-hole stretches into in the recess and locking in the recess the target piece.

In one embodiment, the fixture comprises a plurality of locking members, the base is provided with a plurality of grooves and a plurality of through holes, the plurality of locking members correspond to the plurality of grooves one to one, and each locking member extends into the groove through the corresponding through hole.

In one embodiment, a plurality of the grooves are distributed in an array.

In one embodiment, the plurality of grooves are distributed on the surface of the base in two rows, and the plurality of through holes are respectively arranged on the surfaces of two opposite sides of the base.

In one embodiment, the through hole is a screw hole, and the locking member is screw-fitted into the through hole.

In one embodiment, the locking member is a screw, and the length of the screw rod of the screw is 13 mm-23 mm.

In one embodiment, the length of the groove is 12mm to 40mm, the width of the groove is 3mm to 10mm, and the depth of the groove is 2mm to 8 mm.

In one embodiment, the end surface of the retaining member projecting into the recess is subjected to a surface polishing treatment, and the inner wall of the recess is subjected to a surface polishing treatment.

In one embodiment, the tolerable temperatures of the base and the retaining member are both greater than 1600 ℃.

In one embodiment, the base and the retaining member are both alumina ceramic pieces.

The utility model provides an anchor clamps for making piezoelectric actuator, including base and retaining member, offer the recess that is used for placing the target spare on the base, the top of recess is equipped with the opening, and the target spare is placed in the recess through the opening, and the target spare is including the target unit of range upon range of setting, and the diapire setting of recess is all hugged closely to the same side of each target unit, still sets up on the base correspond the recess setting and with the through-hole of recess intercommunication, the target spare in the recess and locking recess is stretched into to the one end of retaining member through the through-hole. The process of manufacturing the piezoelectric actuator by adopting the clamp comprises the following steps: firstly, preliminarily bonding a plurality of chip porcelain bodies together through inorganic glue to obtain a stack structure; then, the stack structure is placed into the groove through the opening of the groove, and one end of the locking piece extends into the groove through the through hole and abuts against the stack structure, so that the stack structure is prevented from being separated from the groove; then, placing the clamp and the stack structure on the clamp in a sintering furnace for sintering to solidify the glue; in the engineering of glue solidification, a plurality of chip porcelain bodies on the stack structure are aligned through the grooves, so that the chip porcelain bodies cannot be displaced, and the alignment precision of the chip porcelain bodies can be greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic perspective view of a fixture for manufacturing a piezoelectric actuator according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a fixture for manufacturing a piezoelectric actuator according to an embodiment of the present invention;

fig. 3 is a schematic use view of a fixture for manufacturing a piezoelectric actuator according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

100-a base; 110-a groove; 120-opening; 130-a through hole; 200-a retaining member; 300-target part.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 and 2, an embodiment of the present invention provides a fixture for manufacturing a piezoelectric actuator, including a base 100 and a locking member 200, the base 100 is provided with a groove 110 for placing a target 300 and a through hole 130 communicated with the groove 110 and correspondingly disposed, the top of the groove 110 is provided with an opening 120, the target 300 is placed in the groove 110 through the opening 120, the target 300 includes target units (not shown) stacked in layers, the same side of each target unit is tightly attached to the bottom wall of the groove 110, one end of the locking member 200 extends into the groove 110 through the through hole 130 and locks the target 300 in the groove 110, so as to prevent the target 300 from separating from the groove 110.

It should be noted that, the utility model discloses anchor clamps mainly used makes piezoelectric actuator, and target 300 is the stack structure that is formed by the preliminary bonding of a plurality of chip porcelain bodies together, and particularly, a plurality of chip porcelain bodies pile up layer by layer in proper order to through the preliminary bonding of glue that does not solidify the processing between two adjacent chip porcelain bodies, of course, according to actual conditions's selection, target 300 also can be other articles, the utility model discloses do not do the restriction here.

Specifically, referring to fig. 3, the process of manufacturing the piezoelectric actuator by using the above-mentioned jig includes: firstly, preliminarily bonding a plurality of chip porcelain bodies together through inorganic glue to obtain a stack structure, wherein the stack structure is the target part 300; then, the stack structure is placed into the groove 110 through the opening 120 of the groove 110, and one end of the locking member 200 extends into the groove 110 through the through hole 130 and abuts against the stack structure, so that the stack structure is prevented from being separated from the groove 110; then, placing the clamp and the stack structure on the clamp in a sintering furnace for sintering to solidify the glue; in the glue solidification engineering, a plurality of chip porcelain bodies on the stack structure are aligned through the grooves 110, so that the chip porcelain bodies cannot be displaced, the alignment precision of the chip porcelain bodies can be greatly improved, and the quality of the manufactured piezoelectric driver is stable and reliable.

Specifically, in an embodiment of the present invention, as shown in fig. 1 and 2, the fixture includes a plurality of locking members 200, a plurality of grooves 110 and a plurality of through holes 130 are formed on the base 100, each groove 110 is correspondingly disposed with a stacking structure, the plurality of locking members 200 are in one-to-one correspondence with the plurality of grooves 110, and each locking member 200 extends into the groove 110 through the corresponding through hole 130. When the piezoelectric driver is manufactured by adopting the clamp, the plurality of stack structures can be respectively placed into the corresponding grooves 110 at one time, and one ends of the plurality of locking pieces 200 extend into the corresponding grooves 110 through the through holes 130 and abut against the stack structures, so that the stack structures are prevented from being separated from the grooves 110; then, arrange anchor clamps and the stack structure on it in the sintering furnace sintering and make the glue solidification, it is from this visible, the utility model discloses anchor clamps can also improve the solidification efficiency of glue through the structural glue of a plurality of stacks of disposable solidification on the basis of the counterpoint precision of guaranteeing the chip porcelain body, have improved the productivity greatly to reduce the cost of manufacture, improve the economic benefits of product.

It can be understood that, according to the selection of actual conditions, also can only be equipped with a retaining member 200 on the anchor clamps, it is corresponding, only a recess 110 and a through-hole 130 have also been seted up on the base 100, under this condition, the miniaturization can be accomplished to the anchor clamps, therefore, the fritting furnace can hold a plurality of anchor clamps, in order to improve solidification efficiency, can once only arrange a plurality of anchor clamps that are equipped with the stack structure in the fritting furnace sintering and make glue solidification, it also can reach the effect of the above-mentioned embodiment that is provided with a plurality of retaining members 200, a plurality of recesses 110 and a plurality of through-holes 130, the utility model discloses do not do special restriction here.

Specifically, in an embodiment of the present invention, as shown in fig. 1 and fig. 2, the plurality of grooves 110 are distributed in an array, specifically, the plurality of grooves 110 may be distributed on two side edges of the surface of the base 100, and the plurality of through holes 130 are respectively disposed on the surfaces of two opposite sides of the base 100. It is understood that, according to the choice of the actual situation, the plurality of grooves 110 may be arranged in other arrangement manners as long as the above-mentioned effect can be achieved, and the present invention is not limited herein.

As an optional embodiment of the present invention, the through hole 130 may be a screw hole, the locking member 200 is screwed into the through hole 130, as shown in fig. 3, after the stack structure is placed in the groove 110 of the base 100, the locking member 200 is rotated to make one end of the locking member 200 extend into the groove 110 and abut against the stack structure, so that the stack structure is clamped on the inner wall of the groove 110 and one end of the locking member 200 extending into the groove 110, thereby preventing the stack structure from escaping from the groove 110, and further ensuring tight connection between the chip porcelain bodies after the glue is cured, so that the quality of the manufactured piezoelectric actuator is stable and reliable. In this embodiment, retaining member 200 can be, but is not limited to, a screw having a shank threadably coupled to throughbore 130. It can be understood that, according to the choice of practical situation, the connection mode between the locking member 200 and the through hole 130 can be also adopted, as long as the locking member 200 can lock the stack structure in the groove 110, and the present invention is not limited herein.

Specifically, the size of the groove 110 is adapted to the size of the stack structure, specifically, the length of the groove 110 is slightly larger than the thickness of the stack structure, and the width of the groove 110 is slightly larger than the width of the stack structure, so that the stack structure can be placed in the groove 110 exactly to align the plurality of chip porcelain bodies of the stack structure. In this embodiment, the depth of the groove 110 is slightly less than the length of the stack structure, so that when the stack structure is placed in the groove 110, a portion of the stack structure is exposed from the opening 120 of the groove 110, so as to facilitate the subsequent clamping of the stack structure from the groove 110.

It should be noted that, in the embodiment of the present invention, the length of groove 110 refers to the dimension of groove 110 in the direction parallel to the assembling direction of retaining member 200, the depth of groove 110 refers to the dimension of groove 110 in the direction parallel to the stacking direction of retaining member 200 placed in groove 110, the width of groove 110 refers to the dimension of groove 110 in the direction perpendicular to the assembling direction of retaining member 200 and the direction of stacking structure placed in groove 110, the thickness of stacking structure refers to the dimension of stacking structure in the arranging direction of a plurality of chip porcelain bodies, the length of stacking structure refers to the dimension of stacking structure in the direction parallel to the stacking direction of stacking structure placed in groove 110, and the width of stacking structure refers to the dimension of stacking structure in the direction perpendicular to the assembling direction of retaining member 200 and the direction of stacking structure placed in groove 110.

Specifically, the inner wall of the groove 110 is subjected to plane polishing, and one end of the locking member 200 extending into the groove 110 is subjected to plane polishing, so that the chip ceramic bodies at two ends of the stack structure are respectively in plane contact with the end of the locking member 200 extending into the groove 110 and the inner wall of the groove 110, and the chip ceramic bodies are prevented from being crushed or scratched.

Optionally, in the clamp of the embodiment of the present invention, the length of the groove 110 is 12mm to 40mm, the depth is 3mm to 10mm, the width is 2mm to 8mm, and the length of the screw on the screw (locking member 200) is 13mm to 23mm, for example, the length of the groove 110 is 20mm, the depth is 4mm, the width is 5 ± 0.05mm, and the length of the screw on the screw is 18 mm. It is understood that the above dimensions may be appropriately adjusted according to the choice of the actual situation, and the present invention is not particularly limited thereto.

Optionally, the base 100 and the locking member 200 are both ceramic members, and may specifically but not limited to be alumina ceramic members, compared with other materials, the alumina ceramic materials have a tolerable temperature of greater than 1600 ℃, generally speaking, the curing temperature of the glue is lower than 1000 ℃, the base 100 and the locking member 200 are made of alumina ceramic materials, so that the service lives of the base and the locking member can be greatly prolonged, and it is effectively ensured that the fixture can fix the stack structure in the sintering process. Of course, the base 100 and the locking member 200 can be made of other materials that can withstand higher temperature according to the choice of actual conditions, and the present invention is not limited herein.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides an anchor clamps for making piezoelectric actuator, its characterized in that, includes base and retaining member, set up the recess that is used for placing the target piece on the base, the top of recess is equipped with the opening, the target piece warp the opening place in the recess, the target piece is including the target unit of range upon range of setting, each the same side of target unit is all hugged closely the diapire setting of recess, still seted up on the base and corresponded the recess set up and with the through-hole of recess intercommunication, the one end warp of retaining member the through-hole stretches into in the recess and locking in the recess the target piece.

2. The clamp of claim 1, wherein said clamp includes a plurality of locking members, said base defining a plurality of said recesses and a plurality of said apertures, said plurality of locking members corresponding one-to-one with said plurality of recesses, each of said locking members extending into said recess through a corresponding one of said apertures.

3. The fixture of claim 2, wherein a plurality of said grooves are arranged in an array.

4. The fixture of claim 3, wherein the plurality of grooves are distributed on the surface of the base in two rows, and the plurality of through holes are respectively disposed on the surfaces of the two opposite sides of the base.

5. The clamp of claim 1, wherein said through-hole is a threaded hole and said retaining member is threadably engaged in said through-hole.

6. The clamp of claim 5, wherein the locking member is a screw having a shank length of 13mm to 23 mm.

7. The clamp of claim 1, wherein the length of the groove is 12mm to 40mm, the width of the groove is 3mm to 10mm, and the depth of the groove is 2mm to 8 mm.

8. The jig according to any one of claims 1 to 7 wherein the end face of the retaining member projecting into one end of the recess is subjected to a flat polishing treatment and the inner wall of the recess is subjected to a flat polishing treatment.

9. The clamp of any one of claims 1 to 7, wherein the tolerable temperatures of both the base and the retaining member are greater than 1600 ℃.

10. The clamp of any one of claims 1 to 7, wherein the base and the retaining member are both alumina ceramic pieces.

Images