Adjustable four-step positioning clamp for large aluminum alloy casting

Abstract

The utility model relates to an adjustable four-step positioning clamp for a large aluminum alloy casting. The adjustable four-step positioning clamp is characterized by comprising a bottom plate and a positioning supporting unit, a bottom plate structure capable of being installed on a machine tool is adopted for supporting a large aluminum alloy casting, and machining on the machine tool is facilitated; besides, the side limiting columns are arranged on the bottom plate to limit the large aluminum alloy casting in the horizontal direction, the pressing blocks and the adjustable supporting columns are additionally arranged to adjust the position of the large aluminum alloy casting in the vertical direction, the clamping requirement for machining precision of the large aluminum alloy casting is met, and the machining efficiency and the machining qualification rate of products are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting fixture products, in particular to an adjustable four-stage positioning fixture for large aluminum alloy castings. Background Art

[0002] Large precision casting transmission boxes are processed and formed by casting. Since their processing accuracy requirements are higher than those of conventional products, ordinary fixtures and tooling cannot meet the processing accuracy requirements, and there are large errors in three-dimensional positioning. Therefore, in order to avoid unnecessary cost waste, labor time, and material costs, we have independently designed special fixtures and tooling for the housing requirements, so that it can better meet the dimensional requirements during the processing process. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an adjustable four-stage positioning fixture for large aluminum alloy castings, which can solve the problem that general clamping tooling for high-precision processing of large aluminum alloy castings cannot meet the support and clamping requirements.

[0004] In order to solve the above technical problems, the technical solution of the present utility model is: an adjustable four-stage positioning fixture for large aluminum alloy castings, the innovation of which is that: it includes a base plate and a positioning support unit;

[0005] The bottom plate is arranged horizontally; the bottom plate is provided with mounting bolt holes, and the bottom plate can be fixed on the processing machine tool by connecting the bolts;

[0006] The positioning support unit includes a side limit column, a pressure block and an adjustable support column; the side limit column has four and is vertically arranged on the upper surface of the base plate and distributed in a rectangular shape; the top of the side limit column is provided with a pressure block locking hole; the pressure block is horizontally fixed to the top of the side limit column by a bolt; the edge of the pressure block extends out of the side of the side limit column; the adjustable support column is connected to the base plate parallel to the side limit column, the adjustable support column is located just below the area where the pressure block extends out of the top of the side limit column, and a clamping gap for accommodating large aluminum alloy castings is formed between the top of the adjustable support column and the bottom of the pressure block;

[0007] The adjustable support column includes a connecting base, a fixing column and an adjusting bolt; the connecting base is fixed to the base plate by bolt locking, the fixing column is vertically arranged on the upper surface of the connecting base, and the top end of the fixing column is provided with an adjusting threaded hole along the vertical direction; the adjusting bolt is arranged at the top end of the fixing column and cooperates with the adjusting threaded hole, and the height of the entire adjustable support column is adjusted by rotating the adjusting bolt to realize the height adjustment of the clamping gap.

[0008] Furthermore, the base plate has a waist-shaped structure, which is convenient for installation on a machine tool.

[0009] The advantages of the present invention are:

[0010] 1) The present invention adopts a base plate structure that can be installed on a machine tool to support large aluminum alloy castings, making it easy to process on the machine tool. In addition, side limit columns are provided on the base plate to limit the horizontal position of the large aluminum alloy castings. In addition, clamping blocks and adjustable support columns are provided to adjust the position of the large aluminum alloy castings in the vertical direction, thereby meeting the clamping requirements of its processing accuracy and greatly improving the processing efficiency and the processing qualification rate of the products. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0012] Figure 1 The utility model is a schematic diagram of the structure of an adjustable four-stage positioning fixture for large aluminum alloy castings.

[0013] Figure 2 This is an assembly state diagram of an adjustable four-stage positioning fixture for large aluminum alloy castings of the utility model. DETAILED DESCRIPTION

[0014] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0016] like Figure 1 Figure 2 The adjustable four-stage positioning fixture for large aluminum alloy castings shown includes a base plate 1 and a positioning support unit 2.

[0017] The base plate 1 is arranged horizontally; the base plate 1 is provided with mounting bolt holes, and the base plate 1 is fixed to the processing machine tool by connecting the bolts.

[0018] The positioning support unit 2 includes a side limit column 21, a clamping block 22 and an adjustable support column 23; the side limit column 21 has four and is vertically arranged on the upper surface of the base plate 1 in a rectangular shape; the top of the side limit column 21 is provided with a clamping block locking hole; the clamping block 22 is horizontally fixed on the top of the side limit column 21 by bolts; the edge of the clamping block 22 extends out of the side of the side limit column 21; the adjustable support column 23 is connected to the base plate 1 parallel to the side limit column 21, and the adjustable support column 23 is located directly below the area where the clamping block 22 extends out of the top of the side limit column 21, and a clamping gap for accommodating large aluminum alloy castings is formed between the top of the adjustable support column 23 and the bottom of the clamping block 22.

[0019] The adjustable support column 23 includes a connecting base, a fixing column and an adjusting bolt 231; the connecting base is fixed to the base plate 1 by bolt locking, the fixing column is vertically arranged on the upper surface of the connecting base, and the top of the fixing column is provided with an adjusting threaded hole along the vertical direction; the adjusting bolt 231 is arranged at the top of the fixing column and cooperates with the adjusting threaded hole, and the height of the entire adjustable support column 23 is adjusted by rotating the adjusting bolt to realize the height adjustment of the clamping gap.

[0020] The base plate 1 is waist-shaped, which is convenient for installation on a machine tool.

[0021] The working principle of the utility model is: a base plate structure that can be installed on a machine tool is used to support large aluminum alloy castings, which is convenient for processing on the machine tool; in addition, side limit columns are arranged on the base plate to limit the large aluminum alloy castings in the horizontal direction, and a clamping block and an adjustable support column are also provided to adjust the position of the large aluminum alloy castings in the vertical direction, thereby meeting the clamping requirements of its processing accuracy and greatly improving the processing efficiency and the processing qualification rate of the product.

[0022] Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements shall fall within the scope of the present invention to be protected.

Claims

1. An adjustable four-stage positioning fixture for large aluminum alloy castings, characterized by: It includes a base plate and a positioning support unit; The bottom plate is arranged horizontally; the bottom plate is provided with mounting bolt holes, and the bottom plate can be fixed on the processing machine tool by connecting the bolts; The positioning support unit includes a side limit column, a pressure block and an adjustable support column; the side limit column has four and is vertically arranged on the upper surface of the base plate and distributed in a rectangular shape; the top of the side limit column is provided with a pressure block locking hole; the pressure block is horizontally fixed to the top of the side limit column by a bolt; the edge of the pressure block extends out of the side of the side limit column; the adjustable support column is connected to the base plate parallel to the side limit column, the adjustable support column is located just below the area where the pressure block extends out of the top of the side limit column, and a clamping gap for accommodating large aluminum alloy castings is formed between the top of the adjustable support column and the bottom of the pressure block; The adjustable support column includes a connecting base, a fixing column and an adjusting bolt; the connecting base is fixed to the base plate by bolt locking, the fixing column is vertically arranged on the upper surface of the connecting base, and the top end of the fixing column is provided with an adjusting threaded hole along the vertical direction; the adjusting bolt is arranged at the top end of the fixing column and cooperates with the adjusting threaded hole, and the height of the entire adjustable support column is adjusted by rotating the adjusting bolt to realize the height adjustment of the clamping gap.

2. The adjustable four-stage positioning fixture for large aluminum alloy castings according to claim 1, characterized in that: The bottom plate has a waist-shaped structure, which is convenient for installation on a machine tool.

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