Positioning clamp for part machining

Abstract

The utility model relates to the technical field of positioning fixtures, in particular to a positioning fixture for part machining, which comprises a bottom plate and a mounting plate fixedly arranged at the top of the bottom plate, and is characterized in that a front positioning fixture and a back positioning fixture are fixedly arranged at the top of the mounting plate, a four-axis turntable is arranged on one side of the mounting plate, and a positioning plate is arranged on the other side of the mounting plate. The four-axis rotary table is fixedly arranged on the bottom plate, the side, close to the mounting plate, of the four-axis rotary table is in transmission connection with a side face positioning clamp, the front face positioning clamp and the side face positioning clamp are each detachably connected with a carrier, and after the carriers are machined on the front face positioning clamp, the carriers are dismounted and mounted on the side face positioning clamp to be machined. According to the utility model, after the improvement, all procedures can be processed by using one machine, the stability of a clamping mode is greatly improved, and the processing efficiency and the quality control are improved.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixture technology, and in particular to a positioning fixture for parts processing. Background Technology

[0002] For square parts that require machining, the existing process uses two machines and three clamping operations to complete the machining. The first and second steps use ordinary hydraulic vises to clamp and machine the front and back sides. The third step uses a horizontal machining center to drill the four side holes. As a result, the CPK dimensions and symmetry of the machined parts are unstable, and the machining efficiency is low. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a positioning fixture for parts processing, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides a positioning fixture for parts processing, including a base plate, a mounting plate fixedly mounted on the top of the base plate, a front positioning fixture and a back positioning fixture fixedly mounted on the top of the mounting plate, a four-axis rotary table on one side of the mounting plate, the four-axis rotary table fixedly mounted on the base plate, a side positioning fixture being drivenly connected to the side of the four-axis rotary table near the mounting plate, and a carrier being detachably connected to both the front positioning fixture and the side positioning fixture.

[0005] After the carrier is processed on the front positioning fixture, it is disassembled and installed on the side positioning fixture for further processing. Finally, the part is disassembled from the carrier and installed on the reverse positioning fixture for further processing.

[0006] Preferably, the front positioning fixture is a first zero-point quick-change reference plate, and the first zero-point quick-change reference plate is rectangular in shape.

[0007] Preferably, the reverse positioning fixture includes:

[0008] The second zero-point quick-change reference plate is fixed on the top of the mounting plate;

[0009] The self-centering vise is detachably mounted on the top of the second zero-point quick-change reference plate.

[0010] Preferably, the side positioning fixture is a third part quick-change reference plate, and the third part quick-change reference plate is circular in shape.

[0011] Preferably, the carrier includes a positioning base, a dovetail clamp adapted to the back of the part is fixed on the top of the base plate, and a plurality of quick-change rods are fixed on the bottom of the base plate.

[0012] The beneficial effects of this utility model are as follows: By swapping the second and third steps, and utilizing the stability of the dovetail clamp, the front side is machined and the positioning base is removed as a whole and installed on the four-axis rotary table. The accuracy of the third zero-point quick-change reference plate can well control the dimensional symmetry requirements. In the third step, the reverse side is machined using a self-centering vise. The self-centering vise can ensure that the center position of the workpiece is relatively fixed each time it is clamped, which can well control the symmetry required by the drawing. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the carrier according to an embodiment of the present utility model.

[0016] The diagram is marked as follows:

[0017] 1. Base plate; 2. Mounting plate; 3. Four-axis rotary table; 4. First zero-point quick-change reference plate; 5. Second zero-point quick-change reference plate; 6. Self-centering vise; 7. Third part quick-change reference plate; 8. Positioning base; 9. Dovetail clamp; 10. Quick-change rod. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0019] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] like Figure 1 and Figure 2 As shown, a positioning fixture for machining parts includes a base plate 1, a mounting plate 2 fixedly mounted on the top of the base plate 1, a front positioning fixture and a back positioning fixture fixedly mounted on the top of the mounting plate 2, a four-axis rotary table 3 provided on one side of the mounting plate 2, the four-axis rotary table 3 fixedly mounted on the base plate 1, a side positioning fixture being drivenly connected to the side of the four-axis rotary table 3 near the mounting plate 2, and a carrier being detachably connected to both the front positioning fixture and the side positioning fixture;

[0021] After the carrier is processed on the front positioning fixture, it is disassembled and installed on the side positioning fixture for further processing. Finally, the part is disassembled from the carrier and installed on the reverse positioning fixture for further processing.

[0022] As an optional embodiment, the front positioning fixture is a first zero-point quick-change reference plate 4, and the first zero-point quick-change reference plate 4 is rectangular in shape.

[0023] As an optional embodiment, the reverse positioning fixture includes:

[0024] The second zero-point quick-change reference plate 5 is fixed on the top of the mounting plate 2;

[0025] The self-centering vise 6 is detachably mounted on the top of the second zero-point quick-change reference plate 5.

[0026] As an optional embodiment, the side positioning fixture is a third part quick-change reference plate 7, and the third part quick-change reference plate is circular in shape.

[0027] As an optional embodiment, the carrier includes a positioning base 8, a dovetail clamp 9 adapted to the back of the part is fixed on the top of the base plate 1, and a plurality of quick-change rods 10 are fixed on the bottom of the base plate 1.

[0028] For example, by swapping the existing second and third steps, and utilizing the stability of the dovetail clamp 9, the front side is machined and the positioning base 8 is removed as a whole and mounted on the four-axis rotary table 3. The accuracy of the third zero-point quick-change reference plate can effectively control the dimensional symmetry requirements for side machining. After the side machining is completed, the part is removed from the dovetail clamp 9 and the third step is performed. The self-centering vise 6 is used to machine the reverse side. The self-centering vise 6 can ensure that the center position of the workpiece is relatively fixed each time it is clamped, which can effectively control the symmetry required by the drawing. After the improvement of this utility model, all processes can be processed on one machine, and the stability of the clamping method is greatly improved, as well as the processing efficiency and quality control.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this utility model is limited to these examples; within the framework of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this utility model as described above, which are not provided in the details for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A positioning fixture for machining parts, comprising a base plate (1), wherein a mounting plate (2) is fixedly disposed on the top of the base plate (1), characterized in that, The top of the mounting plate (2) is fixed with a front positioning fixture and a back positioning fixture. A four-axis turntable (3) is provided on one side of the mounting plate (2). The four-axis turntable (3) is fixed on the base plate (1). A side positioning fixture is provided on the side of the four-axis turntable (3) near the mounting plate (2). A carrier can be detachably connected to both the front positioning fixture and the side positioning fixture. After the carrier is processed on the front positioning fixture, it is disassembled and installed on the side positioning fixture for further processing. Finally, the part is disassembled from the carrier and installed on the reverse positioning fixture for further processing.

2. The positioning fixture for machining parts according to claim 1, characterized in that, The front positioning fixture is a first zero-point quick-change reference plate (4), and the first zero-point quick-change reference plate (4) is rectangular in shape.

3. A positioning fixture for machining parts according to claim 1, characterized in that, The reverse positioning fixture includes: The second zero-point quick-change reference plate (5) is fixed on the top of the mounting plate (2); The self-centering vise (6) is detachably connected to the top of the second zero-point quick-change reference plate (5).

4. A positioning fixture for machining parts according to claim 1, characterized in that, The side positioning fixture is a third part quick-change reference plate (7), and the third part quick-change reference plate is circular in shape.

5. A positioning fixture for machining parts according to claim 1, characterized in that, The carrier includes a positioning base (8), the top of the base plate (1) is fixed with a dovetail clamp (9) adapted to the back of the part, and the bottom of the base plate (1) is fixed with a plurality of quick-change rods (10).

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