CN219900551U

CN219900551U - Electrolytic machining device

Info

Publication number: CN219900551U
Application number: CN202320834821.XU
Authority: CN
Inventors: 何西; 沈磊; 王希
Original assignee: Xiamen University
Current assignee: Xiamen University
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-10-27
Anticipated expiration: 2033-04-14

Abstract

The present disclosure provides an electrolytic processing device, comprising: a lower case including a hollow inner space, and forming an electrolyte circulation passage through the inner space; an upper housing fixed to the lower housing; and a processing tool at least part of which is located in the inner space of the lower housing, and at least part of which is located between the lower housing and the upper housing, and seals the upper end of the lower housing by the processing tool.

Description

Electrolytic machining device

Technical Field

The present disclosure relates to an electrolytic processing device.

Background

In the prior art, the internal spline is generally machined by adopting machining modes such as broaching or milling. However, these machining methods have a certain loss of the machining tool, and after machining a certain number of internal splines, the machining tool needs to be replaced.

Based on this, electrolytic machining of internal splines is an alternative method that may replace machining processes such as broaching or milling. Chinese patent No. CN111375850B discloses a multi-station synchronous precision electrolytic forming device and method for involute internal spline, which uses electrolytic processing technique to process internal spline by axial feeding.

However, in the processing method, the number of teeth of the electrolytic tool is required to be the same as that of the internal spline, and a reasonable gap is required to be kept between the electrolytic tool and the internal spline during electrolytic processing, so that the processing speed is reduced when the gap is large; when the gap is small, the flow of the electrolyte is not facilitated, and chips and the like cannot be taken away, so that the processing quality and speed are affected.

Disclosure of Invention

In order to solve one of the above technical problems, the present disclosure provides an electrolytic processing device.

According to one aspect of the present disclosure, there is provided an electrochemical machining apparatus, including:

a lower case including a hollow inner space, and forming an electrolyte circulation passage through the inner space; an inlet of the electrolyte circulation channel is positioned at the lower end of the lower shell; the outlet of the electrolyte circulation channel is positioned on the side wall of the lower shell and is close to the upper end of the lower shell;

an upper housing fixed to the lower housing; and

a machining tool at least partially located within the interior space of the lower housing and at least partially located between the lower housing and the upper housing and sealing an upper end of the lower housing with the machining tool;

the outer peripheral surface of the processing cutter and the inner wall surface of the workpiece to be processed are arranged at intervals, and the intervals are more than or equal to 0.2mm.

In accordance with an electrochemical machining apparatus of at least one embodiment of the present disclosure, the lower end of the lower case is formed with an outer flange.

According to an electrolytic machining device of at least one embodiment of the present disclosure, the inner space includes a stepped surface on which a workpiece to be machined is disposed.

In accordance with at least one embodiment of the present disclosure, the lower housing includes a first central bore and a second central bore, wherein the first central bore has a first diameter, the second central bore has a second diameter, the first diameter is smaller than the second diameter, and the first central bore is located below the second central bore.

In accordance with at least one embodiment of the present disclosure, the upper housing includes an upper central bore having a diameter identical to the second diameter.

An electrolytic processing device according to at least one embodiment of the present disclosure, the processing tool includes:

a machining tool, the lower end of which includes a tooth-shaped portion; and

and a seal member provided to the machining tool such that the seal member is located between the upper and lower housings.

An electrochemical machining apparatus according to at least one embodiment of the present disclosure, the seal includes:

a plate-like portion having a center hole, the machining tool being located within the center hole of the plate-like portion, and the plate-like portion being located between the upper and lower housings; and

a tubular portion provided on an outer peripheral surface of the plate-like portion, an upper end of the tubular portion being higher than an upper surface of the plate-like portion, and a lower end of the tubular portion being lower than a lower surface of the plate-like portion; wherein an upper end of the cylindrical portion is in contact with the upper housing, and a lower end of the cylindrical portion is in contact with the lower housing.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of an electrolytic processing device according to one embodiment of the present disclosure.

Fig. 2 and 3 are various angled cross-sectional views of an electrolytic processing device according to one embodiment of the present disclosure.

Fig. 4 is a schematic structural view of a processing tool according to one embodiment of the present disclosure.

The reference numerals in the drawings specifically are:

100 electrolytic machining device

110 lower housing

111 first center hole

112 second central hole

113 step surface

114 locating hole

120 upper housing

121 upper central hole

130 working tool

131 machining tool

132 seal

1321 plate-like portion

1322 a cylindrical portion.

Detailed Description

The present disclosure is described in further detail below with reference to the drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant content and not limiting of the present disclosure. It should be further noted that, for convenience of description, only a portion relevant to the present disclosure is shown in the drawings.

In addition, embodiments of the present disclosure and features of the embodiments may be combined with each other without conflict. The technical aspects of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the exemplary implementations/embodiments shown are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Thus, unless otherwise indicated, features of the various implementations/embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concepts of the present disclosure.

The use of cross-hatching and/or shading in the drawings is typically used to clarify the boundaries between adjacent components. As such, the presence or absence of cross-hatching or shading does not convey or represent any preference or requirement for a particular material, material property, dimension, proportion, commonality between illustrated components, and/or any other characteristic, attribute, property, etc. of a component, unless indicated. In addition, in the drawings, the size and relative sizes of elements may be exaggerated for clarity and/or descriptive purposes. While the exemplary embodiments may be variously implemented, the specific process sequences may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in reverse order from that described. Moreover, like reference numerals designate like parts.

When an element is referred to as being "on" or "over", "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to," or "directly coupled to" another element, there are no intervening elements present. For this reason, the term "connected" may refer to physical connections, electrical connections, and the like, with or without intermediate components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "under … …," under … …, "" under … …, "" lower, "" above … …, "" upper, "" above … …, "" higher "and" side (e.g., as in "sidewall"), etc., to describe one component's relationship to another (other) component as illustrated in the figures. In addition to the orientations depicted in the drawings, the spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture. For example, if the device in the figures is turned over, elements described as "under" or "beneath" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "below" … … can encompass both an orientation of "above" and "below". Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising," and variations thereof, are used in the present specification, the presence of stated features, integers, steps, operations, elements, components, and/or groups thereof is described, but the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximation terms and not as degree terms, and as such, are used to explain the inherent deviations of measured, calculated, and/or provided values that would be recognized by one of ordinary skill in the art.

Fig. 1 is a schematic structural view of an electrochemical machining apparatus 100 according to one embodiment of the present disclosure. Fig. 2 and 3 are various angled cross-sectional views of an electrolytic processing device according to one embodiment of the present disclosure.

As shown in fig. 1-3, the electrochemical machining apparatus 100 of the present disclosure may include a lower housing 110, an upper housing 120, a machining tool 130, and the like.

Since the lower housing 110 needs to be driven to rotate, it is formed as a cylindrical or substantially cylindrical member, and is formed as a center hole in the axial direction thereof at the center axis position of the lower housing 110.

In a preferred embodiment, the central hole includes a first central hole 111 and a second central hole 112, wherein the first central hole 111 has a first diameter and the second central hole 112 has a second diameter, and the first diameter is smaller than the second diameter, that is, a central hole structure having different diameters is formed in the inside of the lower housing 110.

In terms of position, the first central hole 111 is located below the second central hole 112, and accordingly, the lower end of the second central hole 112 is connected to and communicates with the upper end of the first central hole 111, so that a step surface 113 is formed at the connection between the first central hole 111 and the second central hole 112, at this time, the step surface 113 is formed as a positioning surface, a workpiece to be machined can be placed on the step surface 113 and positioned accurately, and then the workpiece to be machined is machined.

The side wall of the lower housing 110 is provided with a positioning hole 114, and in terms of position, the positioning hole 114 is higher than the step surface 113, and when a positioning member (such as a positioning screw or a positioning pin) is arranged in the positioning hole 114, the positioning of the workpiece to be processed is realized by the positioning member (including the positioning screw or the positioning pin).

In the present disclosure, the lower case 110 includes a hollow inner space, and an electrolyte circulation passage is formed through the inner space; more specifically, the inlet of the electrolyte circulation passage is located at the lower end of the lower case 110, for example, the lower end of the first center hole 111 is formed as the inlet of the electrolyte circulation passage described above.

The outlet of the electrolyte circulation passage is located at a side wall of the lower case 110 and near an upper end of the lower case 110. At this time, the through hole may be formed on the sidewall of the lower case 110, and the outlet of the electrolyte circulation passage may be formed through the through hole, in which case the through hole may communicate with the second central hole 112.

The lower end of the lower housing 110 is formed with an outer flange, whereby the lower housing 110 can be fixed to a rotatable part of a machine tool by the outer flange, thereby enabling the lower housing 110 to be driven to rotate.

The upper housing 120 is fixed to the lower housing 110; in a specific embodiment, the upper end of the lower housing 110 is also formed with an outer flange, and accordingly, the upper housing 120 is formed as a cylinder having the same diameter as the outer flange of the upper end of the lower housing 110, and the upper housing 120 is fixed to the lower housing 110 by a fastener such as a screw.

At least a portion of the processing tool 130 is located in the inner space of the lower case 110, whereby the inner wall surface of the workpiece to be processed can be electrolytically processed by the processing tool 130; also, at least part of the processing tool 130 is located between the lower housing 110 and the upper housing 120, and the upper end of the lower housing 110 is sealed by the processing tool 130.

In one embodiment, the upper housing 120 includes an upper center hole 121, and the diameter of the upper center hole 121 is the same as the second diameter, whereby the processing tool 130 can be moved in a direction perpendicular to the axial direction thereof, so that the offset distance value between the axis of the processing tool 130 and the axis of the upper housing 120 and/or the lower housing 110 can be varied, thereby enabling the processing of internal splines of different inner diameters by the same processing tool 130, so that the electrolytic processing device has high applicability.

In a preferred embodiment, the machining tool 130 includes a machining tool 131, a seal 132, and the like.

The machining tool 131 is made of a conductive material and can be formed as a cathode of an electrolytic machining device. In one embodiment, the machining tool 131 is formed in a cylindrical shape as a whole, and a tooth form portion is included at a lower end of the machining tool 131, which may form the lower end of the machining tool 131 into a substantially gear shape. In a preferred embodiment, the lower end of the machining tool 131 may include 9 tooth shapes disposed along an axial direction thereof, which are uniformly distributed on a circumferential surface of the machining tool 131.

In terms of length, the length (axial direction) of the tooth-shaped part is greater than or equal to or slightly greater than the length (axial direction) of the internal spline to be machined, so that the internal spline can be molded at one time when the electrolytic machining device disclosed by the utility model is used, and the machining efficiency of a workpiece to be machined is improved.

The seal 132 is provided to the processing tool 131, and on the one hand, the seal 132 is fixed to the processing tool 131 and rotates together with the processing tool 131. On the other hand, the sealing member 132 may not be fixed to the machining tool, and the sealing member 132 may not be rotated when the machining tool 131 is rotated.

In a preferred embodiment, the sealing member 132 is made of an insulating material so that the lower case 110 of the electrolytic processing device of the present disclosure may be formed as an anode, and at this time, the lower case 110 is made of a conductive material and is connected to a positive electrode of a power source, whereby when a workpiece to be processed is disposed at the lower case 110, the workpiece to be processed is also formed as an anode. Accordingly, the negative electrode of the power source is connected to the processing tool 131, whereby the processing tool 131 is formed as a cathode.

In the present disclosure, the sealing member 132 is located between the upper housing 120 and the lower housing 110, thereby enabling, on the one hand, an insulating structure to be formed between the processing tool 131 and the workpiece to be processed, and, on the other hand, the sealing member 132 is also capable of sealing the upper end of the lower housing 110, i.e., the upper end of the second center hole 112.

In a preferred embodiment, as shown in FIG. 4, the seal 132 comprises: plate 1321 and cylindrical portion 1322.

The plate-shaped portion 1321 has a center hole, the machining tool 131 is located in the center hole of the plate-shaped portion 1321, and in the present disclosure, the outer diameter of the machining tool 131 is smaller than the diameter of the second center hole 112 or the upper center hole 121, and accordingly, when the machining tool 131 moves in a direction perpendicular to the axis thereof, the plate-shaped portion 1321 moves together with the machining tool 131, and at this time, the plate-shaped portion 1321 can slide with respect to the lower case 110 and the upper case 120.

On the other hand, the plate 1321 is located between the upper case 120 and the lower case 110; on the premise that the processing tool 131 is rotated and the sealing member 132 is also rotated, the sealing member 132 is also in sliding contact with the upper end of the lower housing 110 and with the lower end of the upper housing 120.

The cylindrical portion 1322 is provided on the outer peripheral surface of the plate-like portion 1321, and the upper end of the cylindrical portion 1322 is higher than the upper surface of the plate-like portion 1321, and the lower end of the cylindrical portion 1322 is lower than the lower surface of the plate-like portion 1321; preferably, the outer circumferential surface of the plate 1321 is connected to the middle position of the cylindrical portion 1322.

The upper end of the cylindrical part 1322 contacts the upper housing 120, and the lower end of the cylindrical part 1322 contacts the lower housing 110; accordingly, in view of the translation and rotation that may occur to the barrel 1322, in the present disclosure, an annular cavity structure can be formed between the lower housing 110 and the upper housing 120, the barrel 1322 being slidably disposed within the annular cavity structure.

Accordingly, on the one hand, a storage space is formed between the cylindrical portion 1322, the plate-like portion 1321, and the lower case 110, and the storage space can store the electrolyte leaked from the vicinity of the plate-like portion 1321 therein, and the electrolyte is not leaked to other areas; the contact between the upper end of the cylindrical portion 1322 and the upper housing 120 also serves to position and support a machining tool.

In one embodiment, the outer circumferential surface of the processing tool 131 is spaced from the inner wall surface of the workpiece to be processed by 0.2mm or more, so that the gap between the processing tool 131 and the workpiece to be processed can be adjusted to a proper value when the workpiece to be processed is processed.

In use, the electrolytic machining device of the present disclosure may be fixed to a machine tool, and then the position of the machining tool 131 is adjusted so that the gap between the machining tool 131 and the inner surface of the workpiece to be machined is a preset value (or the distance between the axis of the machining tool 131 and the axis of the workpiece to be machined is a predetermined value), and then the machining tool 131 can be driven to rotate, and the lower housing 110 can also be driven to rotate; thereby performing one-time processing molding on the workpiece to be processed in the lower housing 110.

In addition, the electrolyte flow channel of the electrolytic machining device disclosed by the utility model flows smoothly, a high-pressure pump is not required to be arranged, and accordingly, various sealing joints and the like are not required to be arranged on a pipeline.

Those skilled in the art will appreciate that the different speed ratios between the machining tool 131 and the workpiece to be machined enable the same machining tool 131 to machine involute teeth of different numbers of teeth and thereby increase the number of use scenarios of the electrolytic machining device of the present disclosure.

In the description of the present specification, reference to the terms "one embodiment/manner," "some embodiments/manner," "example," "a particular example," "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/manner or example is included in at least one embodiment/manner or example of the utility model. In this specification, the schematic representations of the above terms are not necessarily for the same embodiment/manner or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/modes or examples described in this specification and the features of the various embodiments/modes or examples can be combined and combined by persons skilled in the art without contradiction.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

It will be appreciated by those skilled in the art that the above-described embodiments are merely for clarity of illustration of the disclosure, and are not intended to limit the scope of the disclosure. Other variations or modifications will be apparent to persons skilled in the art from the foregoing disclosure, and such variations or modifications are intended to be within the scope of the present disclosure.

Claims

1. An electrolytic processing device, comprising:

an upper housing fixed to the lower housing; and

the outer peripheral surface of the processing cutter of the processing tool is arranged at intervals with the inner wall surface of the workpiece to be processed, and the intervals are more than or equal to 0.2mm.

2. The electrochemical machining apparatus of claim 1, wherein the lower housing is formed at a lower end thereof with an outer flange.

3. The electrolytic processing apparatus according to claim 1, wherein the inner space includes a stepped surface on which the workpiece to be processed is provided.

4. The electrochemical machining apparatus of claim 1, wherein the lower housing includes a first central bore and a second central bore, wherein the first central bore has a first diameter, the second central bore has a second diameter, the first diameter is less than the second diameter, and the first central bore is located below the second central bore.

5. The electrochemical machining apparatus of claim 4, wherein said upper housing includes an upper central bore having a diameter that is the same as said second diameter.

6. The electrolytic processing apparatus according to claim 1, wherein the processing tool comprises:

a machining tool, the lower end of which includes a tooth-shaped portion; and

7. The electrochemical machining apparatus of claim 6, wherein said seal comprises: