A base workpiece machining clamp

Abstract

The utility model discloses a kind of clamps for base workpiece processing, it is related to machining technical field.It includes support seat, support table and pressing plate component;Support seat includes bottom plate, two vertical plates and two horizontal plates, bottom plate is fixedly connected on numerical control rotary table of numerical control machine tool, two vertical plates are parallel to each other and vertically fixedly connected on bottom plate, two horizontal plates are fixedly connected between the lower part of the front end of two vertical plates respectively and between the lower part of rear end;Support table is horizontally fixedly connected at the top of two vertical plates, and support table top is equipped with a plurality of first cushion blocks, and first cushion block is used to support base workpiece;Pressing plate component is detachably connected at the top of support table, and it is used to press base workpiece tightly on support table.The utility model clamping step is simple, and reduces clamping frequency.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a fixture for machining base workpieces. Background Technology

[0002] Castings are shaped metal objects obtained through various casting methods. This involves pouring molten metal into a pre-prepared mold using methods such as casting, injection, suction, or other casting techniques. After cooling, the metal undergoes subsequent processing such as grinding to obtain an object with a specific shape, size, and properties. For some castings with rectangular frame structures, such as... Figure 1 The example shown is a base workpiece with a relatively complex structure. When the base workpiece is rough-machined, i.e., pre-processed using CNC machine tools such as lathes and milling machines to remove excess material, and when it is fine-machined, i.e., precision-machined, the base workpiece needs to be clamped on the CNC machine tool. Due to the complex structure of the rectangular frame base workpiece, multiple parts of the base workpiece need to be clamped and fixed using fixtures. This results in a large number of clamping operations and a complex clamping process, which reduces processing efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a fixture for processing base workpieces, which reduces the number of clamping operations and simplifies the clamping steps.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A fixture for machining a base workpiece includes a support base, a support platform, and a pressure plate assembly. The support base includes a base plate, two vertical plates, and two horizontal plates. The base plate is fixedly connected to the CNC rotary table of a CNC machine tool. The two vertical plates are parallel to each other and vertically fixedly connected to the base plate. The two horizontal plates are respectively fixedly connected between the lower front ends and the lower rear ends of the two vertical plates. The support platform is horizontally fixedly connected to the top of the two vertical plates. The top of the support platform is provided with a plurality of first pads for supporting the base workpiece. The pressure plate assembly is detachably connected to the top of the support platform and is used to press the base workpiece onto the support platform.

[0006] In some embodiments, at least two connecting through holes are spaced apart along the length of the support platform; the pressure plate assembly includes a pressure plate, bolts, washers, hexagonal nuts, flange nuts, and two second pads. The pressure plate has a waist-shaped hole along the length of the platform. The head of the bolt abuts against the bottom of the connecting through hole. The bolt's threaded end passes upward through one of the connecting through holes, the washer, the hexagonal nut, the top of the base workpiece, the waist-shaped hole, and the flange nut in sequence. The hexagonal nut is threadedly connected to the bolt and is used to press the washer against the top of the connecting through hole. The flange nut is threadedly connected to the bolt and is used to press against the top of the waist-shaped hole. The two second pads are respectively located between the bottom of both ends of the pressure plate and the top of the base workpiece. The pressure plate is used to press against the two second pads, and the two second pads are used to press against the top of the base workpiece.

[0007] Compared with the prior art, this utility model achieves at least the following beneficial effects:

[0008] In use, this utility model simply requires placing the rectangular frame structure base workpiece onto the support base from top to bottom. Multiple first pads on the support platform support the bottom of the top frame of the base workpiece. Then, the pressure plate assembly is adjusted to press the base workpiece firmly onto the support platform, thus fixing the base workpiece to the support platform. This facilitates the CNC machine tool to perform corresponding processing on the base workpiece. The clamping steps are simple, reducing the number of clamping operations compared to existing fixtures and improving processing efficiency. Attached Figure Description

[0009] Figure 1 This is a structural schematic diagram of the base workpiece;

[0010] Figure 2 This is an exploded view of an embodiment of this application;

[0011] Figure 3 This is a schematic diagram of the structure of the support base and support platform according to an embodiment of this application;

[0012] Figure 4 This is a schematic diagram illustrating the usage state of an embodiment of this application.

[0013] The following are the labels in the diagram: 1. Support base; 11. Base plate; 12. Vertical plate; 13. Horizontal plate; 14. Horizontal beam; 2. Support platform; 21. Connecting through hole; 3. Pressure plate assembly; 31. Pressure plate; 311. Waist-shaped hole; 32. Bolt; 33. Washer; 34. Hex nut; 35. Flange nut; 36. Second pad; 4. First pad; 5. Rib; 6. Base workpiece. Detailed Implementation

[0014] The present invention will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of this application more complete and to fully convey the concept of the present application to those skilled in the art.

[0015] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Moreover, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0016] like Figures 2-4 As shown in the embodiment of this application, a fixture for processing a base workpiece includes a support base 1, a support platform 2, and a pressure plate assembly 3.

[0017] The support base 1 includes a base plate 11, two vertical plates 12, and two horizontal plates 13. The base plate 11 is fixedly connected to the CNC rotary table of the CNC machine tool. The two vertical plates 12 are parallel to each other and vertically fixedly connected to the base plate 11. The two horizontal plates 13 are respectively fixedly connected between the lower front end and the lower rear end of the two vertical plates 12. The CNC rotary table is a commonly used precision rotating functional component on a CNC machine tool. Its specific structure is existing technology and will not be described in detail here. Since the base plate 11 is fixedly connected to the CNC rotary table, the support base 1 can be continuously rotated or indexed and positioned by the CNC system. The support platform 2 is horizontally fixedly connected to the top of the two vertical plates 12. The top of the support platform 2 is provided with multiple first pads 4, which are used to support the base workpiece 6. The pressure plate assembly 3 is detachably connected to the top of the support platform 2 and is used to press the base workpiece 6 onto the support platform 2. In use, the rectangular frame structure of the base workpiece 6 is placed on the support base 1 from top to bottom. Multiple first pads 4 on the support platform 2 are used to support the bottom of the top frame of the base workpiece 6. Then, by adjusting the pressure plate assembly 3, the base workpiece 6 is pressed tightly onto the support platform 2, thereby fixing the base workpiece 6 to the support platform 2, preventing workpiece displacement, facilitating the CNC machine tool to perform corresponding processing on the base workpiece 6, suppressing the vibration of the workpiece caused by force during high-speed cutting or intermittent cutting, improving the surface roughness of the workpiece, and simplifying the clamping steps. Compared with existing fixtures, it reduces the number of clamping operations, improves processing efficiency, and increases output.

[0018] Specifically, the support platform 2 has at least two connecting through holes 21 spaced apart along its length; the pressure plate assembly 3 includes a pressure plate 31, bolts 32, washers 33, hexagonal nuts 34, flange nuts 35, and two second pads 36. The pressure plate 31 has a waist-shaped hole 311 along its length. The head of the bolt 32 rests against the bottom of the connecting through hole 21, and the threaded end of the bolt 32 passes upward through one of the connecting through holes 21, the washer 33, the hexagonal nut 34, the top of the base workpiece 6, the waist-shaped hole 311, and the flange nut 35 in sequence. The hexagonal nut 34 and the bolt 32... A threaded connection is used to press the washer 33 against the top of the connecting through hole 21. A flange nut 35 is threadedly connected to a bolt 32 and is used to press against the top of the oblong hole 311. Two second pads 36 are respectively located between the bottom ends of the pressure plate 31 and the top of the base workpiece 6. The pressure plate 31 is used to press against the two second pads 36, and the two second pads 36 are used to press against the top of the base workpiece 6. The height of the second pads 36 can be adjusted to ensure that the pressure direction is reasonable and can also disperse the pressure of the pressure plate 31 to avoid concentrated pressure that may cause local deformation of the base workpiece 6. In use, the top of the bolt 32's screw end protrudes from the top frame opening of the base workpiece 6. A second pad 36 is placed on each side of the top of the top frame opening. The two ends of the pressure plate 31 press against the two second pads 36 respectively, and the oblong hole 311 on the pressure block allows the top of the bolt 32's screw end to pass through. Then, the flange nut 35 is threadedly connected to the top of the bolt 32's screw end, and the flange nut 35 is rotated and tightened. Thus, the pressure plate 31 applies pressure to the two second pads 36, pressing the base workpiece 6 onto the support table 2, fixing the base workpiece 6 on the support table. The CNC rotary table drives the support table 1 to rotate, facilitating the CNC machine tool's cutting tools to perform cutting and other processing operations on the base workpiece 6.

[0019] Each upright plate 12 is fixedly connected to the base plate 11 by a rib plate 5 to enhance the structural rigidity of the support base 1. Optionally, the rib plate 5 is a right-angled triangular plate.

[0020] The support base 1 also includes two crossbeams 14, which are fixedly connected between the upper front ends and the upper rear ends of the two upright plates 12, respectively. The crossbeams 14 are used to bear the weight of the upper support platform 2 and the base workpiece 6, and to distribute the force to the supporting structures such as the upright plates 12 and the base plate 11. Moreover, by connecting the two upright plates 12 laterally, the crossbeams 14 form a stable whole from the dispersed structure, thereby improving the overall rigidity and deformation resistance of the support base 1.

[0021] Four first pads 4 are provided, and the four first pads 4 are respectively fixedly connected to the four top corners of the support platform 2. Optionally, the first pads 4 are cylindrical blocks.

[0022] This utility model, by setting up a support platform 2 and a support base 1, allows the rectangular frame structure of the base workpiece 6 to be placed on the support base 1 before processing. Multiple first pads 4 on the support platform can support the bottom of the top frame of the base workpiece 6. Then, the second pads 36, the pressure plate 31, and the flange nut 35 in the pressure plate assembly 3 are assembled. The two second pads 36 are placed on the top of the top frame of the base workpiece 6, and the two ends of the pressure plate 31 press on the two second pads 36 respectively. The flange nut 35 is threaded to the top of the screw end of the bolt 32. By rotating and adjusting the flange nut 35, the base workpiece 6 can be pressed tightly onto the support platform 2 through the pressure plate 31 and the second pads 36, thereby fixing the base workpiece 6 to the support platform 2 and facilitating the CNC machine tool to perform corresponding processing operations on the base workpiece 6.

[0023] It should be understood that all the above embodiments are exemplary and not restrictive. Any modifications, equivalent changes and alterations made by those skilled in the art to the specific embodiments described above under the concept of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A fixture for machining a base workpiece, characterized in that: The system includes a support base, a support platform, and a pressure plate assembly. The support base comprises a base plate, two vertical plates, and two horizontal plates. The base plate is fixedly connected to the CNC rotary table of a CNC machine tool. The two vertical plates are parallel to each other and vertically fixedly connected to the base plate. The two horizontal plates are respectively fixedly connected between the lower front ends and the lower rear ends of the two vertical plates. The support platform is horizontally fixedly connected to the top of the two vertical plates. The top of the support platform is provided with multiple first pads for supporting the base workpiece. The pressure plate assembly is detachably connected to the top of the support platform and is used to press the base workpiece firmly onto the support platform.

2. The fixture for machining a base workpiece according to claim 1, characterized in that: The support platform is provided with at least two connecting through holes spaced apart along its length. The pressure plate assembly includes a pressure plate, bolts, washers, hexagonal nuts, flange nuts, and two second pads. The pressure plate is provided with a waist-shaped hole along its length. The head of the bolt abuts against the bottom of the connecting through hole. The bolt's threaded end passes upward through one of the connecting through holes, the washer, the hexagonal nut, the top of the base workpiece, the waist-shaped hole, and the flange nut in sequence. The hexagonal nut is threadedly connected to the bolt and is used to press the washer against the top of the connecting through hole. The flange nut is threadedly connected to the bolt and is used to press against the top of the waist-shaped hole. The two second pads are respectively located between the bottom of both ends of the pressure plate and the top of the base workpiece. The pressure plate is used to press against the two second pads, and the two second pads are used to press against the top of the base workpiece.

3. The fixture for machining a base workpiece according to claim 1, characterized in that: Each of the aforementioned upright plates and the base plate is fixedly connected by a rib.

4. The fixture for machining a base workpiece according to claim 3, characterized in that: The rib is a right-angled triangular plate.

5. The fixture for machining a base workpiece according to claim 1, characterized in that: The support base also includes two crossbeams, which are fixedly connected between the upper front ends and the upper rear ends of the two upright plates, respectively.

6. The fixture for machining a base workpiece according to claim 1, characterized in that: There are four first pads, and the four first pads are fixedly connected to the top four corners of the support platform.

7. The fixture for machining a base workpiece according to claim 6, characterized in that: The first pad is a cylindrical block.

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