Positioning and fixing device for automobile part machining

Abstract

According to the positioning and fixing device for automobile part machining, a radial positioning device matched with an inner hole of a part blank is arranged in the middle of the upper end face of a positioning seat, and an inner fixing device which is located in the inner hole of the part blank and used for fixing the part blank with the outer wall and the end face machined is arranged on the radial positioning device; the upper end face of the positioning base is provided with an outer fixing device located on the periphery of the part blank and used for fixing the part blank for inner hole and end face machining. According to the utility model, the radial positioning device matched with the inner hole of the part blank is arranged on the upper plate surface of the positioning seat, and the inner fixing device and the outer fixing device which are arranged on the positioning seat are combined, so that the part blank is reliably positioned in the radial direction; the outer wall and the end face or the inner hole wall and the end face of a part blank are reliably fixed inside or outside the right during machining, the problems that an automobile part is complex in machining procedure and low in precision are solved, the machining procedure is simplified, the labor intensity is reduced, the machining efficiency and precision are high, and the machining cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of tooling and fixtures, and specifically relates to a positioning and fixing device for processing automotive parts. Background Technology

[0002] For ring-shaped automotive parts with machining features on both the inner and outer walls, the complexity of the machining process is a drawback. For example... Figure 5 The part 14 shown has trapezoidal protrusions 15 on its inner hole wall. The inner hole wall, upper and lower end faces, and outer circumferential wall of part 14 have through holes, oblique holes, grooves and other technical features. During processing, it is necessary to constantly change the clamping surface and clamping position, which makes the processing process complicated, the reference surface inconsistent, the labor intensity high and the processing efficiency low. Therefore, in order to solve the above technical problems, it is necessary to design a positioning and fixing fixture. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a positioning and fixing device for processing automotive parts. Based on the structure of the part itself, a radial positioning device adapted to the inner hole of the part blank is set on the upper plate of the positioning seat. Combined with the inner fixing device and the outer fixing device set on the positioning seat, the part blank is reliably fixed from the inside or right outside during the processing of the outer wall and end face or the inner hole wall and end face of the part blank under the premise of reliable radial positioning. This solves the problem of complex and low precision in the processing of automotive parts, simplifies the processing process, reduces labor intensity, improves processing efficiency and precision, and reduces processing costs, thus having high application value.

[0004] The technical solution adopted by this utility model is: a positioning and fixing device for processing automotive parts, including a positioning seat. The upper end face of the positioning seat is provided with a radial positioning device that is adapted to the inner hole of the part blank and is used for radial positioning of the part blank. The radial positioning device is provided with an inner fixing device located in the inner hole of the part blank and used for fixing the part blank for processing the outer wall and end face. The upper end face of the positioning seat is provided with an outer fixing device located on the outer periphery of the part blank and used for fixing the part blank for processing the inner hole and end face.

[0005] The radial positioning device includes a positioning convex circle and a positioning pin. The outer circumferential wall of the positioning convex circle has three grooves evenly distributed, and the positioning convex circle and the grooves form a protrusion structure that is the same size and shape as the inner hole of the part blank and is adapted to it. The upper end face of the positioning seat has a plurality of pin holes evenly distributed around the center of the positioning convex circle, which are adapted to the through holes on the part blank. The positioning pin passes through the through hole on the part blank and is inserted into the corresponding pin hole, and performs radial positioning of the part blank in cooperation with the protrusion structure.

[0006] Furthermore, the height of the positioning convex circle is less than the thickness of the part blank.

[0007] Further, the inner fixing device comprises three inner pressing plates which are circumferentially and evenly distributed with the center of the positioning convex circle as the center, the upper end surface of the positioning convex circle is circumferentially and evenly provided with a plurality of inner threaded holes, and the inner pressing plate whose outer end is above the inner edge of the part blank is fixedly pressed on the positioning convex circle by the inner bolt matched with the inner threaded hole.

[0008] Further, the outer fixing device comprises four outer pressing plates which are arranged outside the positioning convex circle, the upper plate surface of the positioning seat is provided with four outer threaded holes which are outside the part blank, and the outer pressing plate whose inner end is above the outer edge of the part blank is fixedly pressed on the positioning seat by the outer bolt matched with the outer threaded hole.

[0009] Further, the positioning seat is designed as a circular or polygonal plate structure according to the use requirement.

[0010] The advantages of the utility model compared with the prior art are:

[0011] 1. According to the structure of the part itself, the radial positioning device matched with the inner hole of the part blank is arranged on the upper plate surface of the positioning seat, so that reliable radial positioning of the part blank is realized.

[0012] 2. The inner fixing device is arranged on the positioning seat, and the part blank positioned radially is fixed on the positioning seat by the inner fixing device, so that the machining of the hole and groove on the upper end surface and the outer circumferential wall of the part blank is provided, and the fixed position needs not to be frequently replaced for machining the hole and groove on the upper end surface and the outer circumferential wall of the part blank.

[0013] 3. The outer fixing device is arranged on the positioning seat, and the part blank positioned radially is fixed on the positioning seat by the outer fixing device, so that the machining of the hole and groove on the inner hole wall and the end surface of the part blank is provided, and the hole and groove on the inner hole wall and the end surface can be machined once without frequently replacing the fixed position of the part blank, so that the machining process is greatly simplified.

[0014] 4. The technical scheme has simple structure and novel design, solves the problems of complex machining process and low precision of the automobile parts, simplifies the machining process, reduces the labor intensity, improves the machining efficiency and precision, reduces the machining cost, and has high use value. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure front view of the utility model;

[0016] Figure 2 It is the structure left view of the utility model;

[0017] Figure 3 It is the structure schematic view of the inner fixing device of the utility model for positioning the part blank on the positioning seat.

[0018] Figure 4 The structure schematic view of the part blank positioned on the positioning seat of the utility model external fixing device is shown in the figure.

[0019] Figure 5 The part plane structure schematic view is shown in the figure. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below. Figures 1-4 It should be apparent that the described embodiments are only a part of embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] It should be noted that in this article, unless otherwise stated, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In this article, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations. The element defined by the statement "including a..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0023] The positioning and fixing device for automobile accessory machining, such as Figures 1-4As shown, the positioning seat 1 is provided with a radial positioning device in the middle of the upper end face, which is adapted to the inner hole of the part blank 2 and used for radial positioning of the part blank 2, and the radial positioning device is provided with an inner fixing device located in the inner hole of the part blank 2 and used for fixing the part blank 2 for machining of the outer wall and end face; the upper end face of the positioning seat 1 is provided with an outer fixing device located at the outer periphery of the part blank 2 and used for fixing the part blank 2 for machining of the inner hole and end face; in the above structure, according to the structure of the part itself, the radial positioning device adapted to the inner hole of the part blank 2 is arranged on the upper plate face of the positioning seat 1, and the inner fixing device and the outer fixing device arranged on the positioning seat 1 are combined to realize reliable radial positioning of the part blank 2, and reliable inner or outer fixation is realized when machining the outer wall and end face or the inner hole wall and end face of the part blank 2.

[0024] The specific structure of the radial positioning device is as follows: the radial positioning device comprises a positioning convex circle 3 and a positioning pin 12, the outer peripheral wall of the positioning convex circle 3 is uniformly provided with three grooves 4, and the positioning convex circle 3 and the grooves 4 form a convex structure which is the same in size and shape and is adapted to the inner hole of the part blank 2; the upper end face of the positioning seat 1 is uniformly provided with a plurality of pin holes 5 adapted to the through hole 6 on the part blank 2 with the center of the positioning convex circle 3 as the center, and the positioning pin 12 is inserted into the corresponding pin hole 5 through the through hole 6 on the part blank 2, and cooperates with the convex structure to position the part blank 2 radially, thereby ensuring the radial precision of the part blank 2; wherein the height of the positioning convex circle 3 is less than the thickness of the part blank 2, so that the part blank 2 is positioned and clamped after the two times of surface changing, and the finished product machining of the part 14 is realized.

[0025] The specific structure of the inner fixing device is as follows: the inner fixing device comprises three inner pressing plates 13 uniformly distributed with the center of the positioning convex circle 3 as the center, and the upper end face of the positioning convex circle 3 is uniformly provided with a plurality of inner threaded holes 7, and the inner pressing plate 13 located at the outer end portion above the inner edge of the part blank 2 is pressed and fixed to the positioning convex circle 3 by the inner bolt 8 adapted to the inner threaded hole 7; in the above structure, the inner fixing device is arranged on the positioning seat 1, and the radially positioned part blank 2 is fixed on the positioning seat 1 by the inner fixing device, thereby providing conditions for machining of the hole and groove on the upper end face and outer peripheral wall of the part blank 2, and frequent replacement of the fixing position is not needed for machining of the hole and groove on the upper end face and outer peripheral wall of the part blank 2.

[0026] The specific structure of the external fixing device is as follows: the external fixing device comprises four external pressing plates 9 arranged outside the positioning convex circle 3, four external threaded holes 10 are arranged on the plate surface of the positioning seat 1 and located outside the part blank 2, and the external pressing plates 9 located above the outer edge of the part blank 2 are fixed on the positioning seat 1 by the external threaded holes 10 and the external bolts 11 matched with the external threaded holes 10; in the above structure, the part blank 2 is fixed on the positioning seat 1 by the external fixing device arranged on the positioning seat 1, which provides conditions for machining the hole and groove on the inner hole wall and the end surface of the part blank 2, so that the machining of the hole and groove on the inner hole wall and the end surface can be completed at one time without frequent replacement of the fixed position of the part blank 2, and the machining process is greatly simplified.

[0027] The positioning seat 1 is designed as a circular or polygonal plate structure according to the use requirement, and in the present scheme, the shape of the positioning seat 1 is a rectangular structure.

[0028] The technical scheme has the advantages of simple structure, novel design, solving the problems of complex machining process and low precision of the automobile parts, simplifying the machining process, reducing the labor intensity, improving the machining efficiency and precision, reducing the machining cost, and having high use value.

[0029] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0030] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical scheme, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical schemes in each embodiment can be properly combined to form other embodiments which can be understood by those skilled in the art.

Claims

1. A positioning and fixing device for processing automotive parts, characterized in that: The positioning seat (1) is provided with radial positioning devices in the middle of the upper end face, which are adapted to the inner hole of the part blank (2) and used for radial positioning of the part blank (2), and the radial positioning devices are provided with inner fixing devices in the inner hole of the part blank (2) and used for fixing the part blank (2) for machining of the outer wall and end face.

2. The positioning and fixing device for processing automobile accessories according to claim 1, characterized in that: The radial positioning devices include positioning convex circles (3) and positioning pins (12), the outer circumferential wall of the positioning convex circles (3) is uniformly provided with three grooves (4), and the positioning convex circles (3) and the grooves (4) form a convex structure which is the same in size and shape and is adapted to the inner hole of the part blank (2), the upper end face of the positioning seat (1) is uniformly provided with a plurality of pin holes (5) which are adapted to the through holes (6) on the part blank (2) and are centered on the center of the positioning convex circles (3), and the positioning pins (12) are inserted into the corresponding pin holes (5) through the through holes (6) on the part blank (2) and cooperate with the convex structure to position the part blank (2) radially.

3. The positioning and fixing device for processing automobile accessories according to claim 2, characterized in that: The height of the positioning convex circles (3) is less than the thickness of the part blank (2).

4. The positioning and fixing device for processing automobile accessories according to claim 3, characterized in that: The inner fixing devices include three inner pressing plates (13) which are uniformly distributed around the center of the positioning convex circles (3), the upper end face of the positioning convex circles (3) is uniformly provided with a plurality of inner threaded holes (7), and the inner pressing plates (13) whose outer end portions are above the inner edge of the part blank (2) are fixed to the positioning convex circles (3) by inner bolts (8) which are adapted to the inner threaded holes (7).

5. The positioning and fixing device for processing automobile accessories according to claim 1, characterized in that: The outer fixing devices include four outer pressing plates (9) which are provided outside the positioning convex circles (3), the upper plate face of the positioning seat (1) is provided with four outer threaded holes (10) which are located outside the part blank (2), and the outer pressing plates (9) whose inner end portions are above the outer edge of the part blank (2) are fixed to the positioning seat (1) by outer bolts (11) which are adapted to the outer threaded holes (10).

6. The positioning and fixing device for processing automobile accessories according to any one of claims 1-5, characterized in that: The positioning seat (1) is designed as a circular or polygonal plate structure according to the use requirements.

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