A combined fixture for multi-process machining of mechanical parts

Abstract

The utility model discloses a combined fixture for multi -process processing of mechanical spare part, including tail seat flange rotary mechanism, base flange rotary mechanism and the support mechanism of setting between both, the support mechanism includes the bottom plate of symmetrical setting, every bottom plate all is equipped with the positioning rotary mechanism for placing work piece, the periphery of positioning rotary mechanism is equipped with the clamping mechanism for clamping work piece, the utility model discloses tail seat flange rotary mechanism, base flange rotary mechanism and the bottom plate of symmetrical setting can realize the multi -process processing of multiple work pieces, and can realize the multi -side processing of work piece, can improve processing efficiency and precision.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical parts processing technology, and specifically relates to a combined fixture for multi-process processing of mechanical parts. Background Technology

[0002] Gearboxes are widely used in various mechanical equipment. Gearboxes are composed of a variety of parts, which need to be processed through multiple processes such as milling, drilling, and boring. Processing is indispensable and requires the use of machining fixtures.

[0003] Traditional fixtures typically employ a single-workpiece, single-process clamping mode. This mode has the following drawbacks: low production efficiency, as only a single workpiece can be clamped at a time, requiring frequent disassembly and replacement after processing, resulting in a high proportion of auxiliary time and making it difficult to meet the requirements of high-efficiency production; repeated positioning affects accuracy, as multi-process machining requires frequent clamping, which can easily introduce cumulative errors, thereby affecting the dimensional and geometric tolerances of key mating surfaces of the gearbox (such as bearing holes and gear mounting surfaces), leading to assembly interference or a decrease in transmission performance; and the process is highly dispersed, with parts being clamped multiple times to different processing steps, increasing the difficulty of quality control.

[0004] To address the shortcomings of the existing technologies, there is an urgent need to develop a rapid fixture that enables parallel clamping of multiple workpieces and precise positioning in multiple directions, thereby achieving efficient and high-precision machining of gearbox parts, while reducing changeover and adjustment time to meet the demands of high-efficiency production.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this utility model is to provide a combined fixture for multi-process machining of mechanical parts, thereby overcoming the defects in the prior art.

[0007] To achieve the above objectives, this utility model provides a combined fixture for multi-process machining of mechanical parts, including a tail flange rotation mechanism, a base flange rotation mechanism, and a support mechanism disposed between the two. The support mechanism includes symmetrically arranged base plates, each base plate is provided with a positioning rotation mechanism for placing the workpiece, and a clamping mechanism for clamping the workpiece is provided around the positioning rotation mechanism.

[0008] Furthermore, preferably, each base plate is provided with a pair of positioning and rotating mechanisms for placing the workpiece.

[0009] Furthermore, as a preferred embodiment, a zero-point positioning rivet mechanism is provided between the symmetrically arranged base plates.

[0010] Furthermore, as a preferred embodiment, the clamping mechanism employs a rotary cylinder clamp.

[0011] Furthermore, as a preferred embodiment, the base plate is also provided with a side positioning mechanism on the periphery of the positioning and rotating mechanism.

[0012] Furthermore, as a preferred embodiment, the side positioning mechanism includes a horizontal positioning cylinder and a positioning plate connected thereto, the positioning plate positioning the workpiece from the side.

[0013] Furthermore, as a preferred embodiment, the base plate is also provided with an elastic vise mechanism, which is used for side positioning of the workpiece.

[0014] Furthermore, as a preferred embodiment, the side positioning mechanism and the flexible vise mechanism are located on opposite sides of the workpiece.

[0015] Furthermore, as a preferred embodiment, the base plate is also provided with an adjustable point support mechanism on the periphery of the positioning and rotating mechanism.

[0016] Furthermore, as a preferred embodiment, the zero-point positioning rivet mechanism is provided in pairs, which position the base plate symmetrically arranged from both ends.

[0017] Compared with the prior art, one aspect of this utility model has the following beneficial effects:

[0018] This utility model, through the tail flange rotation mechanism, the base flange rotation mechanism, and the symmetrically arranged base plates, can realize multi-process processing of multiple workpieces and multi-side processing of workpieces, thereby improving processing efficiency and accuracy.

[0019] This utility model uses a zero-point positioning rivet mechanism to position the base plate, which can improve the installation accuracy of a pair of base plates;

[0020] This utility model adopts a pair of base plates design, and the rotation centers of the workpiece positioning reference on the pair of base plates are consistent, which reduces the positioning error of workpiece installation and can improve the processing accuracy of workpiece.

[0021] This utility model uses an elastic vise mechanism to flexibly adjust the workpiece side positioning, which can avoid workpiece side errors.

[0022] This invention uses a rotary cylinder clamp and a horizontal positioning cylinder for clamping, which can achieve rapid clamping of the workpiece and improve the installation efficiency of the workpiece. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a combined fixture for multi-process machining of mechanical parts according to the present invention;

[0024] Figure 2 This is an enlarged schematic diagram of an elastic vise mechanism of a combined clamping fixture for multi-process machining of mechanical parts according to the present invention.

[0025] Figure 3 This is an enlarged schematic diagram of an adjustable point support mechanism for a combined fixture used in multi-process machining of mechanical parts according to the present invention.

[0026] Figure 4 This is a cross-sectional view of the positioning and rotating mechanism of a combined fixture for multi-process machining of mechanical parts according to this utility model;

[0027] Figure 5 This is a cross-sectional view of the zero-point positioning rivet mechanism of a combined fixture for multi-process machining of mechanical parts according to this utility model;

[0028] Figure 6 This is a schematic diagram of the first process of a combined fixture for multi-process machining of mechanical parts according to the present invention.

[0029] Figure 7 This is a schematic diagram of the second machining step of a combined fixture for multi-process machining of mechanical parts according to the present invention.

[0030] Figure 8 This is a schematic diagram of the third machining step in a combined fixture for multi-process machining of mechanical parts according to the present invention.

[0031] The attached figures are labeled as follows: 1-tailstock flange rotation mechanism, 2-base flange rotation mechanism, 3-support mechanism, 301-base plate, 302-positioning rotation mechanism, 303-zero point positioning rivet mechanism, 4-clamping mechanism, 5-side positioning mechanism, 501-horizontal positioning cylinder, 502-positioning plate, 6-elastic vise mechanism, 7-adjustable point support mechanism, 10-workpiece. Detailed Implementation

[0032] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0033] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0034] Example 1:

[0035] like Figure 1-8As shown, a combined fixture for multi-process machining of mechanical parts includes a tail flange rotation mechanism 1, a base flange rotation mechanism 2, and a support mechanism 3 disposed between the two. The support mechanism 3 includes symmetrically arranged base plates 301. Each base plate 301 is provided with a positioning rotation mechanism 302 for placing the workpiece. The periphery of the positioning rotation mechanism 302 is provided with a clamping mechanism 4 for clamping the workpiece 10.

[0036] In this embodiment, as a specific solution, each base plate 301 is provided with a pair of positioning and rotating mechanisms 302 for placing workpieces 10; more specifically, each base plate 301 is provided with two positioning and rotating mechanisms 302; four workpieces can be placed at the same time.

[0037] In this embodiment, as a specific solution, a zero-point positioning rivet mechanism 303 is provided between the symmetrically arranged base plates 301; the two symmetrical base plate 301 units are installed and fixed by the zero-point positioning rivet mechanism 303, wherein the zero-point positioning rivet mechanism 303 adopts a pneumatic internal zero-point positioning rivet mechanism. The working principle of this mechanism is existing technology and will not be described in detail here. This mechanism can improve the installation accuracy of a pair of base plates 301.

[0038] In this embodiment, as a specific solution, the clamping mechanism 4 adopts a rotary cylinder clamp, which can realize the rapid clamping operation of the workpiece.

[0039] In this embodiment, as a specific solution, a side positioning mechanism 5 is also provided on the base plate 301 around the positioning and rotating mechanism 302; more specifically, the side positioning mechanism 5 includes a horizontal positioning cylinder 501 and a positioning plate 502 connected thereto, the positioning plate 502 positioning the workpiece 10 from the side.

[0040] In this embodiment, as a specific solution, the base plate 301 is also provided with an elastic vise mechanism 6, which is used for side positioning of the workpiece.

[0041] In this embodiment, as a specific solution, the side positioning mechanism 5 and the elastic vise mechanism 6 are located on opposite sides of the workpiece; that is, the side positioning mechanism 5 positions the workpiece from one side, and the elastic vise mechanism 6 adjusts the side positioning from the other side by expanding and contracting (the working principle of the elastic vise mechanism is existing technology, and will not be described in detail here).

[0042] In this embodiment, as a specific solution, an adjustable point support mechanism 7 is also provided on the base plate 301 around the positioning and rotating mechanism 302; more specifically, the adjustable point support mechanism 7 adopts standard adjusting bolts as an auxiliary to support the workpiece together with the positioning and rotating mechanism 302.

[0043] In this embodiment, as a specific solution, the zero-point positioning rivet mechanism 303 is provided in pairs, which are positioned from both ends of the symmetrically arranged base plate 301.

[0044] The working principle of this utility model is as follows:

[0045] Step 1: First, install the tailstock flange rotation mechanism 1 and the base flange rotation mechanism 2 onto the CNC four-axis tailstock and the base of the machining equipment, respectively;

[0046] Step 2: Install and fix the zero-point positioning rivet mechanism 303 on the base plate 301 of the two symmetrical units, and fix the base plate 301 of the two symmetrical units on the tail flange rotation mechanism 1 and the base flange rotation mechanism 2 respectively.

[0047] Step 3: Install the four workpieces to be processed onto the positioning and rotating mechanism 302 on the base plate 301 of the two symmetrical units respectively;

[0048] Step 4: Adjust the adjustable point support mechanism 7, the side positioning mechanism 5, and the flexible vise mechanism 6 to position the workpiece, and start the clamping mechanism 4 to clamp the workpiece.

[0049] Step 5: By rotating the tailstock flange rotation mechanism 1 and the base flange rotation mechanism 2 as a whole, the workpiece 10 is moved according to... Figures 6-8 The diagram shows the adjustment of the workpiece 10 to perform the first, second, and third processes. The dotted line in the diagram represents a schematic of the workpiece.

[0050] This utility model has the following advantages:

[0051] 1. This utility model, through the tail flange rotation mechanism, the base flange rotation mechanism and the symmetrically arranged base plates, can realize multi-process processing of multiple workpieces and multi-side processing of workpieces, without the need for repeated disassembly and assembly of workpieces, thus improving processing efficiency and accuracy.

[0052] 2. This utility model uses a zero-point positioning rivet mechanism to position a pair of base plates, which can improve the installation accuracy of the pair of base plates;

[0053] 3. This utility model adopts a pair of base plates design, and the rotation centers of the workpiece positioning reference on the pair of base plates are consistent, which reduces the positioning error of workpiece installation and can improve the processing accuracy of workpiece.

[0054] 4. This utility model adopts an elastic vise mechanism to flexibly adjust the workpiece side positioning, which can avoid workpiece side errors;

[0055] 5. This utility model uses a rotary cylinder clamp and a horizontal positioning cylinder for clamping, which can achieve rapid clamping of the workpiece and improve the installation efficiency of the workpiece.

[0056] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A combined fixture for multi-process machining of mechanical parts, characterized in that: It includes a tail flange rotation mechanism, a base flange rotation mechanism, and a support mechanism disposed between the two. The support mechanism includes symmetrically arranged base plates. Each base plate is provided with a positioning and rotation mechanism for placing the workpiece. The periphery of the positioning and rotation mechanism is provided with a clamping mechanism for clamping the workpiece.

2. A combined fixture for multi-process machining of mechanical parts according to claim 1, characterized in that: Each base plate is equipped with a pair of positioning and rotating mechanisms for placing the workpiece.

3. A combined fixture for multi-process machining of mechanical parts according to claim 1, characterized in that: A zero-point positioning rivet mechanism is provided between the symmetrically arranged base plates.

4. A combined fixture for multi-process machining of mechanical parts according to claim 1, characterized in that: The clamping mechanism uses a rotary cylinder clamp.

5. A combined fixture for multi-process machining of mechanical parts according to claim 1, characterized in that: The base plate is also provided with a side positioning mechanism on the periphery of the positioning and rotating mechanism.

6. A combined fixture for multi-process machining of mechanical parts according to claim 5, characterized in that: The side positioning mechanism includes a horizontal positioning cylinder and a positioning plate connected thereto, the positioning plate positioning the workpiece from the side.

7. A combined fixture for multi-process machining of mechanical parts according to claim 5, characterized in that: The base plate is also provided with an elastic vise mechanism, which is used for side positioning of the workpiece.

8. A combined fixture for multi-process machining of mechanical parts according to claim 7, characterized in that: The side positioning mechanism and the flexible vise mechanism are located on opposite sides of the workpiece, respectively.

9. A combined fixture for multi-process machining of mechanical parts according to claim 1, characterized in that: An adjustable point support mechanism is also provided on the base plate around the positioning and rotating mechanism.

10. A combined fixture for multi-process machining of mechanical parts according to claim 3, characterized in that: The zero-point positioning rivet mechanism is provided in pairs, which position the base plate symmetrically arranged from both ends.

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