Large aluminum plate work fixture

Abstract

The utility model aims to solve the problems that in the aluminum plate machining process, the flatness and the machining precision of the surface of an aluminum plate are generally required, the flatness cannot meet the requirement easily due to the adoption of a left-right clamping mode, and the drilling external machining requirement cannot be met due to the adoption of an up-down butt clamping mode. In order to solve the problems, the large aluminum plate tool clamp is designed. The utility model provides a large aluminum plate work fixture which comprises a datum plate, a first-class locating hole, a second-class locating hole, a long kidney-shaped hole for fixing and a movable push head. The top face of the datum plate is provided with a machining guide groove. The coarse positioning rod is matched with the first type of positioning holes to work; the expansion bolt is matched with the second type of positioning holes to work; the expansion bolt comprises an expansion sleeve and a bolt, wherein an internal thread is arranged in the expansion sleeve.

Description

Technical Field

[0001] This utility model relates to the field of aluminum plate processing, specifically to a fixture for processing large aluminum plates. Background Technology

[0002] In the mechanical drilling process of aluminum plates, there are usually requirements for the flatness and surface processing accuracy of the aluminum plate surface. When processing small-sized lightweight aluminum plates, manual positioning is usually used. However, when the aluminum plate becomes larger and it is inconvenient for operators to handle, repeated positioning is required. The left and right clamping method of the edge is prone to extrusion deformation, which can cause problems with the flatness of the aluminum plate surface.

[0003] Chinese Patent Publication No. CN 221185551 U, published on June 21, 2024, discloses an invention entitled "A Drilling and Positioning Fixture for Plates." Specifically, it discloses a drilling and positioning fixture for plates. Its structure includes a support column, a base plate connected to the upper end of the support column, and a cover plate that mates with the base plate. The base plate and cover plate are detachably connected by clamping bolts. The cover plate has a plurality of matrix positioning holes for positioning matrix holes in aluminum plates. Drill sleeves that can change the diameter of the matrix positioning holes are fitted onto the matrix positioning holes. A drill bit receiving hole is provided on the base plate at a position coaxial with the matrix positioning holes. A plurality of guide posts for positioning the aluminum plates are fixedly connected to the base plate, and the upper end of each guide post is fitted with a guide post positioning hole designed on the cover plate. This invention solves the technical problems of existing dense matrix fixtures being unsuitable for processing aluminum plates with bench drills and unable to adjust the hole diameter.

[0004] However, its shortcomings are evident. While this application employs a clamping method to achieve flatness on the aluminum plate surface, it also limits drilling to both top and bottom. This design is suitable because it only requires drilling holes of different diameters in the aluminum plate. However, the processing in this application involves not only drilling but also side cutting and milling, making this clamping method unsuitable. Therefore, a fixture for processing large aluminum plates needs to be designed. Summary of the Invention

[0005] This utility model addresses the challenges of achieving the required flatness and precision in aluminum plate machining processes. Left-right clamping methods often fail to meet flatness requirements, while top-bottom clamping methods are unsuitable for drilling and other machining operations. This invention provides a large aluminum plate tooling fixture to resolve these issues.

[0006] This utility model provides a tooling fixture for large aluminum plates, including:

[0007] The reference plate has a machining guide groove, a first type of positioning hole, a second type of positioning hole, a long slotted hole for fixing, and a movable push head on its top surface;

[0008] The coarse positioning rod works in conjunction with the first type of positioning hole;

[0009] Expansion bolts, which work in conjunction with the second type of positioning holes;

[0010] The expansion bolt includes an expansion sleeve and a bolt, wherein the expansion sleeve has internal threads.

[0011] The large aluminum plate tooling fixture of this application can be used simultaneously for front-side machining, back-side machining, and cutting of large aluminum plates. First, the large aluminum plate is placed on a reference plate. The pre-drilled coarse positioning holes on the large aluminum plate are aligned with the first type of positioning holes, and a coarse positioning rod is inserted for coarse positioning. Then, expansion bolts are inserted into the positioning holes on the large aluminum plate. The expansion bolts penetrate the positioning holes and engage with the second type of positioning holes. The large aluminum plate is then positioned planarly by adjusting the bolts of the expansion bolts. After machining both the front and back sides (top and bottom), a movable pusher is used to position the edges of the large aluminum plate before the cutting operation is performed.

[0012] The long, narrow holes are arrayed on the reference plate for fixing; there are 7 second-type positioning holes; the second-type positioning holes are symmetrical about the mirror line with the midpoint of the long side of the reference plate as the mirror line, and the center of one of the second-type positioning holes is located on the mirror line.

[0013] The first type of positioning hole is set in the middle section of the short side of the large aluminum plate for easy and quick positioning. At least one second type of positioning hole is set near the first type of positioning hole for basic positioning. Second type of positioning holes are set around the corners of the large aluminum plate to strengthen the positioning of the overall edge.

[0014] Based on the characteristic of the large aluminum plate with long-side grooves, two second-type positioning holes are set around the short side of the groove and one second-type positioning hole is set around the long side, thereby completing the positioning of the long side of the large aluminum plate and ensuring the overall positioning reliability.

[0015] The movable pusher head includes: the pusher head body and the positioning screw;

[0016] The positioning screw is directly fixed to the reference plate;

[0017] The top surface of the pusher body is provided with an elongated hole, which is matched with the positioning screw.

[0018] The pusher head body has a tongue protrusion on its side and a chip-avoiding groove on its bottom surface, with a chamfered transition between the tongue protrusion and the chip-avoiding groove.

[0019] Using the line connecting the midpoints of the long sides of the reference plate as a mirror line, there are 6 movable push heads, and the movable push heads are symmetrical about this mirror line. The beneficial effects of this utility model are: the positioning by expansion bolts can ensure positioning while avoiding the restriction of processing points by the upper and lower clamping fixtures, maximizing the processing space while ensuring the flatness of the finished large aluminum plate. Attached Figure Description

[0020] Figure 1 Top view of the large aluminum plate mounted on the reference plate;

[0021] Figure 2 Top view of the reference plate;

[0022] Figure 3 Side view of the reference plate;

[0023] Figure 4 3D diagram of expansion plug;

[0024] Figure 5 Flowchart of large aluminum plate cutting process;

[0025] In the diagram: a) large aluminum plate, a1) finished product, a2) cutting area, 1) reference plate, 2) expansion bolt, 3) movable push head, 4) long slot for fixing, 5) first type positioning hole, 6) machining guide groove. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. Example

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, the large aluminum plate tooling fixture includes:

[0028] The reference plate 1 has a machining guide groove 6, a first type of positioning hole 5, a second type of positioning hole, a fixed elongated hole 4, and a movable push head 3 on its top surface;

[0029] The coarse positioning rod works in conjunction with the first type of positioning hole;

[0030] Expansion bolt 2 works in conjunction with the second type of positioning hole;

[0031] like Figure 4 The expansion bolt shown includes an expansion sleeve and a bolt, wherein the expansion sleeve has internal threads.

[0032] The large aluminum plate tooling fixture of this application can be used simultaneously for the front, back, and cutting of large aluminum plate a. First, the large aluminum plate is placed on a reference plate. The pre-drilled coarse positioning holes on the large aluminum plate are aligned with the first type of positioning holes, and a coarse positioning rod is inserted for coarse positioning. Then, expansion bolts are inserted into the positioning holes on the large aluminum plate. The expansion bolts penetrate the positioning holes and engage with the second type of positioning holes. The large aluminum plate is then positioned planarly by adjusting the bolts of the expansion bolts. After machining both the front and back sides (top and bottom), a movable pusher is used to position the edges of the large aluminum plate, and then the large aluminum plate is cut.

[0033] like Figure 5 The diagram illustrates the cutting process of the large aluminum plate in this embodiment. During the front and back processing, the large aluminum plate is marked a. During the cutting process, the large aluminum plate is divided into the finished part a1 and the cutting area a2. After the cutting is completed, the finished part a1 is removed, and the cutting area a2 is removed at the same time as the tooling is released.

[0034] The long, narrow holes are arrayed on the reference plate for fixing; there are 7 second-type positioning holes; the second-type positioning holes are symmetrical about the mirror line with the midpoint of the long side of the reference plate as the mirror line, and the center of one of the second-type positioning holes is located on the mirror line.

[0035] The first type of positioning hole is set in the middle section of the short side of the large aluminum plate for easy and quick positioning. At least one second type of positioning hole is set near the first type of positioning hole for basic positioning. Second type of positioning holes are set around the corners of the large aluminum plate to strengthen the positioning of the overall edge.

[0036] Based on the characteristic of the large aluminum plate with long-side grooves, two second-type positioning holes are set around the short side of the groove and one second-type positioning hole is set around the long side, thereby completing the positioning of the long side of the large aluminum plate and ensuring the overall positioning reliability.

[0037] The movable pusher head includes: the pusher head body and the positioning screw;

[0038] The positioning screw is directly fixed to the reference plate;

[0039] The top surface of the pusher body is provided with an elongated hole, which is matched with the positioning screw.

[0040] The pusher head body has a tongue protrusion on its side and a chip-avoiding groove on its bottom surface, with a chamfered transition between the tongue protrusion and the chip-avoiding groove.

[0041] Using the line connecting the midpoints of the long side of the reference plate as a mirror line, there are 6 active push heads, and the active push heads are symmetrical about this mirror line.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fixture for holding large aluminum panels, characterized by, include: The reference plate has a machining guide groove, a first type of positioning hole, a second type of positioning hole, a long slotted hole for fixing, and a movable push head on its top surface; The coarse positioning rod works in conjunction with the first type of positioning hole; Expansion bolts, which work in conjunction with the second type of positioning holes; The expansion bolt includes an expansion sleeve and a bolt, wherein the expansion sleeve has internal threads.

2. The large aluminum plate tooling fixture of claim 1, wherein, The long, narrow holes are fixedly arrayed on the reference plate; The second type of positioning hole has 7 holes; Using the line connecting the midpoints of the long sides of the reference plate as the mirror line, the second type of positioning holes are symmetrical about this mirror line, and the center of one of the second type of positioning holes is located on the mirror line.

3. The large aluminum plate fixture clamp of claim 1, wherein, The movable pusher head includes: the pusher head body and the positioning screw; The positioning screw is directly fixed to the reference plate; The top surface of the pusher body is provided with an elongated hole, which is matched with the positioning screw. The pusher head body has a tongue protrusion on its side and a chip-avoiding groove on its bottom surface, with a chamfered transition between the tongue protrusion and the chip-avoiding groove.

4. The large aluminum plate fixture clamp of claim 3, wherein, Using the line connecting the midpoints of the long side of the reference plate as a mirror line, there are 6 active push heads, and the active push heads are symmetrical about this mirror line.

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