Locating pin suitable for fixed scroll machining of scroll compressor

Abstract

The utility model provides a positioning pin suitable for fixed scroll machining of a scroll compressor. The positioning pin comprises a positioning pin head, a positioning pin seat and a bottom rod, the bottom rod is installed on the clamp, the positioning pin base is arranged on the bottom rod in a sleeving mode and connected with the bottom rod in a fastened mode through a screw, and the positioning pin head is installed on the positioning pin base and connected with the positioning pin base in a fastened mode through a screw; the positioning pin seat is a cuboid and is axially provided with a through hole, and the front surface is provided with a threaded hole for connection. And the matching surfaces of the positioning pin head, the bottom rod and the screw are inclined surfaces to realize self-locking. The bottom rod is longer than a small rod at the bottom of the original positioning pin to reduce stress concentration influence. The split type design of the positioning pin solves the problem that the root is easy to break, is suitable for machining and positioning of various fixed vortexes, is simple in structure and high in strength, and can reduce loss caused by damage, save cost and time, improve production efficiency and guarantee machining precision of the fixed vortexes.

Description

TECHNICAL FIELD

[0001] The utility model relates to scroll compressor technical field, specifically, especially the positioning pin suitable for scroll compressor fixed scroll processing. BACKGROUND

[0002] In the complex and precise machining process of fixed scroll, the positioning pin is undoubtedly one of the key components to ensure machining accuracy, and its core function is to accurately lock the circumferential position of the fixed scroll, and any deviation may lead to the scrap of the entire workpiece. However, the positioning pin currently in use has exposed serious technical defects in actual application. Because it must adapt to the structure of the specific workpiece and the fixture, its design presents the feature of overall length being too long, and the root part matched with the fixture is too thin. In the machining process, the positioning pin not only bears the irregular stress caused by the tolerance of the positioning hole itself, but also resists the impact force caused by the high-frequency vibration of the workpiece. These factors superimpose each other, so that the stress borne by the root part of the positioning pin far exceeds its design limit, and then the root part is prone to breakage and damage, which seriously affects the machining efficiency and quality of the fixed scroll, and optimization design and improvement are urgently needed. SUMMARY

[0003] In view of the technical problems that the stress borne by the root part of the existing positioning pin far exceeds its design limit, and then the root part is prone to breakage and damage, a positioning pin suitable for scroll compressor fixed scroll machining is provided. The utility model designs a split type positioning pin structure, which independently installs the bottom rod on the scroll fixture, so as to avoid the root part of the positioning pin from being prone to breakage and damage.

[0004] The technical means adopted by the utility model are as follows:

[0005] A positioning pin suitable for scroll compressor fixed scroll machining, comprising: a positioning pin head, a positioning pin seat, and a bottom rod;

[0006] The bottom rod is installed on the fixture, the positioning pin seat is sleeved on the bottom rod and is tightly connected with the bottom rod through screws, and the positioning pin head is installed on the positioning pin seat and is tightly connected with the positioning pin seat through screws.

[0007] Further, the positioning pin seat adopts a cuboid structure, an axial through hole is formed in the positioning pin seat, the positioning pin head and the bottom rod are respectively installed on the upper and lower sides of the positioning pin seat, and two threaded holes are formed on the front surface of the positioning pin seat for tightly fixing the positioning pin head and the bottom rod through screws.

[0008] Further, the mating surfaces of the positioning pin head, the bottom rod and the screws adopt inclined surface design, so that the positioning pin head, the bottom rod and the positioning pin seat have self-locking function.

[0009] Further, the length of the bottom rod is longer than that of the bottom small rod of the existing integral positioning pin, so as to reduce the influence of stress concentration of the bottom of the original positioning pin.

[0010] Further, the positioning pin seat is fastened and connected with the bottom rod and the positioning pin head by screws.

[0011] Further, the positioning pin is designed in a split type, and the positioning demand in various positioning vortex machining is realized by combination of the components.

[0012] Compared with the prior art, the positioning pin has the following advantages:

[0013] 1. The positioning pin is designed in a split type, the length of the bottom rod is longer than that of the bottom small rod of the original integral positioning pin, the influence of stress concentration of the bottom of the original positioning pin is effectively reduced, the positioning pin can better bear the positioning hole tolerance and workpiece vibration in the positioning vortex machining process, the root breakage damage is reduced, and the strength and service life of the positioning pin are significantly improved.

[0014] 2. The split type structure facilitates installation, disassembly and replacement of the components.

[0015] 3. The positioning pin can adapt to the positioning demand in various positioning vortex machining by combination of the positioning pin seat, the bottom rod and the positioning pin head, and has strong universality.

[0016] Based on the above reasons, the positioning pin can be popularized in the field of scroll compressors. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0018] Figure 1 is a positioning pin structure schematic view suitable for scroll compressor positioning vortex machining according to the present application;

[0019] Figure 2 is a top view of the positioning pin structure suitable for fixed scroll machining of a scroll compressor according to the present application;

[0020] Figure 3 is a schematic diagram of a positioning pin head structure in the positioning pin suitable for fixed scroll machining of a scroll compressor according to the present application;

[0021] Figure 4 is a top view of the positioning pin head structure in the positioning pin suitable for fixed scroll machining of a scroll compressor according to the present application;

[0022] Figure 5 is a schematic diagram of a positioning pin seat in the positioning pin suitable for fixed scroll machining of a scroll compressor according to the present application;

[0023] Figure 6 is a top view of the positioning pin seat in the positioning pin suitable for fixed scroll machining of a scroll compressor according to the present application

[0024] Figure 7 is a schematic diagram of a bottom rod structure in the positioning pin suitable for fixed scroll machining of a scroll compressor according to the present application;

[0025] Figure 8 is a top view of the bottom rod structure in the positioning pin suitable for fixed scroll machining of a scroll compressor according to the present application;

[0026] Figure 9 is a schematic diagram of the existing positioning pin structure according to the present application.

[0027] In the figure: 1, positioning pin head; 2, positioning pin seat; 3, bottom rod. DETAILED DESCRIPTION

[0028] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0030] It is to be understood that the terms so far as the language goes are used herein only to describe specific embodiments and not intended to limit the example embodiments according to the present application. 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. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0031] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the actual dimensions of the parts shown in the drawings are not necessarily to scale for the sake of convenience in description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered part of the specification as appropriate. In all examples shown and discussed herein, any specific value should be interpreted as merely an example, and not as a limitation. Thus, other examples of the example embodiments can have different values. It is noted that like numbers and letters refer to like elements throughout the several views of the drawings, and as such, no further discussion with regard thereto is deemed necessary.

[0032] In the description of the present application, it is to be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application: the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0033] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0034] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0035] like Figures 1 to 4 As shown, this utility model provides a positioning pin suitable for machining the fixed scroll of a scroll compressor, including: a positioning pin head 1, a positioning pin seat 2, and a base rod 3;

[0036] The base rod 3 is mounted on the clamp, the positioning pin seat 2 is sleeved on the base rod 3 and fastened to the base rod 3 by screws, and the positioning pin head 1 is mounted on the positioning pin seat 2 and fastened to the positioning pin seat 2 by screws.

[0037] Furthermore, the base rod 3 is installed on the fixture used for machining the fixed scroll of the scroll compressor, and the base rod 3 is firmly fixed in the corresponding position of the fixture with screws to ensure that the base rod 3 will not be displaced during the machining process;

[0038] Place the locating pin seat 2 onto the installed base rod 3, so that the base rod 3 passes through the axial through hole of the locating pin seat 2. Then, use screws to pass through the threaded hole on the front of the locating pin seat 2 to securely connect the locating pin seat 2 and the base rod 3 together. During this process, be sure to tighten the screws to ensure that the connection between the locating pin seat 2 and the base rod 3 is tight and stable.

[0039] Install the locating pin head 1 on top of the locating pin seat 2, and then fasten the locating pin head 1 to the locating pin seat 2 by passing a screw through another threaded hole on the front side of the locating pin seat 2. When installing the locating pin head 1, ensure that its installation position is accurate so that the scroll compressor workpiece can be accurately circumferentially positioned during subsequent processing.

[0040] Further, since the matching surfaces of the positioning pin head 1, the bottom rod 3 and the screw are designed as inclined surfaces, the self-locking effect can be generated in the process of screwing the screw, and the stability of the connection between the components is further enhanced, and the loosening or displacement between the positioning pin head 1, the bottom rod 3 and the positioning pin seat 2 in the machining process is effectively prevented.

[0041] Further, the positioning pin seat 2 adopts a cuboid structure, an axial through hole is formed in the positioning pin seat 2, the positioning pin head 1 and the bottom rod 3 are respectively installed on the upper and lower sides of the positioning pin seat 2, and two threaded holes are formed on the front surface of the positioning pin seat 2 for respectively fastening the positioning pin head 1 and the bottom rod 3 through screws.

[0042] Further, the matching surfaces of the positioning pin head 1, the bottom rod 3 and the screw are designed as inclined surfaces, so that the positioning pin head 1, the bottom rod 3 and the positioning pin seat 2 have a self-locking function.

[0043] Further, the length of the bottom rod 3 is longer than the length of the bottom small rod of the existing integrated positioning pin, so as to reduce the influence of the stress concentration of the original positioning pin bottom.

[0044] Further, the positioning pin seat 2 is fastened and connected with the bottom rod 3 and the positioning pin head 1 through screws.

[0045] Further, the positioning pin is designed as a split type, and the positioning requirements in various vortex machining are realized through the combination of the components.

[0046] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.

Claims

1. A locating pin suitable for machining the fixed scroll of a scroll compressor, characterized in that, include: Positioning pin head (1), positioning pin seat (2), base rod (3); The bottom rod (3) is mounted on the clamp, the positioning pin seat (2) is sleeved on the bottom rod (3) and fastened to the bottom rod (3) by screws, and the positioning pin head (1) is mounted on the positioning pin seat (2) and fastened to the positioning pin seat (2) by screws.

2. A positioning pin suitable for machining the fixed scroll of a scroll compressor according to claim 1, characterized in that, The positioning pin seat (2) adopts a cuboid structure with a through hole in its axial direction. The positioning pin head (1) and the bottom rod (3) are respectively installed on the upper and lower sides of the positioning pin seat (2). The front of the positioning pin seat (2) has two threaded holes for tightening the positioning pin head (1) and the bottom rod (3) with screws.

3. A positioning pin suitable for machining the fixed scroll of a scroll compressor according to claim 1, characterized in that, The mating surfaces of the positioning pin (1), the base rod (3), and the screw are designed with bevels to enable a self-locking function between the positioning pin (1), the base rod (3), and the positioning pin seat (2).

4. A positioning pin suitable for machining the fixed scroll of a scroll compressor according to claim 1, characterized in that, The length of the bottom rod (3) is longer than the length of the bottom rod of the existing integrated positioning pin, so as to reduce the impact of stress concentration at the bottom of the original positioning pin.

5. A positioning pin suitable for machining the fixed scroll of a scroll compressor according to claim 1, characterized in that, The positioning pin seat (2) is fastened to the base rod (3) and the positioning pin head (1) by screws.

6. A positioning pin suitable for machining the fixed scroll of a scroll compressor according to claim 1, characterized in that, The positioning pin adopts a split design, and the positioning needs of various fixed vortex machining are met by combining the various components.

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