CNC (computer numerical control) milling part machining and positioning fixture

Abstract

The utility model discloses a CNC numerical control milling part machining positioning clamp which comprises a vice, a bottom plate positioning device and a sizing block, the side face of the bottom plate positioning device is provided with the sizing block and then installed in a jaw of the vice, the bottom plate positioning device comprises a bottom plate, a pressing plate and a positioning pin, the pressing plate is arranged on the bottom plate, and the positioning pin is arranged on the bottom plate. A kidney-shaped hole is formed in the pressing plate, a screw is installed in the kidney-shaped hole to fix a die part to the bottom plate, the front end of the pressing plate makes contact with the die part, a positioning pin and a positioning protrusion which are used for positioning the die part are further arranged on the bottom plate, the machining position of the part can be determined through a positioning plate in the part positioning device, and rapid clamp changing is achieved. Therefore, the clamping efficiency can be improved, in the machining process, a worker does not need to manually adjust and adjust the workpiece, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and in particular relates to a CNC numerical control milling part processing positioning fixture. Background Art

[0002] During the CNC milling process, parts often shift and move. During processing, they need to be in a fixed position, so it is necessary to prevent the product from shifting, which makes it difficult to fix the parts and causes the processing position to shift.

[0003] In the existing fixture, time is wasted, the clamping position needs to be repeatedly manually corrected, it is difficult to align complex and special-shaped workpieces, and parts are often scrapped during processing, which affects processing efficiency and quality. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies, the inventor of the present utility model has continuously reformed and innovated through long-term exploration and attempts, multiple experiments and efforts, and proposed a CNC milling part processing positioning fixture, which can use the positioning plate in the part positioning device to determine the processing position of the part and realize rapid clamping, thereby improving the clamping efficiency. During the processing, workers do not need to manually adjust and calibrate the workpiece, thereby improving the processing efficiency.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a CNC milling parts processing positioning fixture. It includes a vise, a base plate positioning device, and a shim. The base plate positioning device is installed in the vise jaws after the shim is arranged on the side. The base plate positioning device includes a base plate, a pressure plate, and a positioning pin. The pressure plate is arranged on the base plate. The pressure plate is provided with a waist-shaped hole and screws are installed in the waist-shaped hole to fix the mold part on the base plate. The front end of the pressure plate contacts the mold part. The base plate is also provided with a positioning pin and a positioning protrusion for positioning the mold part.

[0006] According to the CNC milling part machining positioning fixture described in the utility model, a further preferred technical solution is: the number of the pressing plates is two or more, and the pressing plates are arranged around the edge of the part and are evenly spaced.

[0007] According to the CNC milling parts machining positioning fixture described in the utility model, a further preferred technical solution is: the positioning pin is arranged at a position that matches the process hole of the part, the pin is movably arranged, and a corresponding pin hole is arranged on the bottom plate.

[0008] According to the CNC milling parts machining positioning fixture described in the utility model, a further preferred technical solution is: a strip-shaped positioning protrusion is arranged on the bottom plate, and the positioning protrusion is located in the middle position of the pressing plate installed corresponding to the mold part.

[0009] According to the CNC numerical control milling parts processing positioning fixture described in the utility model, a further preferred technical solution is that a material discharge trough is arranged on the bottom plate.

[0010] According to a CNC milling parts processing positioning fixture described in the utility model, its further preferred technical solution is: the shims are arranged on the two sides of the base plate positioning device in contact with the vise, the shims include side shims and bottom shims, the side shims overlap with the bottom shims, the side shims are located between the vise and the side of the base plate, and the bottom shims are located at the lower part of the base plate to support the base plate so that the base plate is suspended.

[0011] According to the CNC milling parts machining positioning fixture described in the utility model, a further preferred technical solution is that the front end of the pressing plate is set to a pointed mouth shape, and the bottom surface of the front end of the pressing plate is a flat surface.

[0012] According to the CNC numerical control milling parts processing positioning fixture described in the utility model, a further preferred technical solution is: the waist-shaped hole of the pressing plate is stepped and is installed using hexagon socket screws.

[0013] According to the CNC milling parts machining positioning fixture described in the utility model, a further preferred technical solution is: the positioning base plate is a regular rectangular plate, and the longer side serves as the clamping side of the vise.

[0014] Compared with the prior art, the technical solution of the utility model has the following advantages / benefits:

[0015] 1. Use the positioning plate in the part positioning device to determine the processing position of the part and realize quick clamping, thereby improving the clamping efficiency. During the processing, workers do not need to manually adjust the workpiece, which improves the processing efficiency.

[0016] 2. Setting up the unloading chute can quickly disassemble the processed parts. There is no need to remove the part positioning device. The next part to be processed can be directly installed and positioned, realizing fast installation without repeated positioning. Different part positioning devices can be installed for different parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1The utility model is a structural schematic diagram of a CNC numerical control milling parts processing positioning fixture.

[0019] Figure 2 The utility model is a structural schematic diagram of a bottom plate positioning device of a CNC numerical control milling part processing positioning fixture when installing a mold part.

[0020] Figure 3 The utility model is a structural schematic diagram of a bottom plate positioning device of a CNC numerical control milling parts processing positioning fixture.

[0021] The markings in the figure are respectively: 1. vise 2. bottom plate positioning device 201. bottom plate 202. pressure plate 203. positioning pin 204. positioning protrusion 205. feed chute 3. shim 301. side shim 302. bottom shim 4. mold parts. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the embodiment of the utility model is clearly and completely described below. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the detailed description of the embodiment of the utility model provided below is not intended to limit the scope of the utility model claimed for protection, but only represents the selected embodiment of the utility model.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in the subsequent drawings.

[0024] Example:

[0025] like Figure 1-Figure 3As shown, a CNC milling part processing positioning fixture comprises a vise 1, a bottom plate positioning device 2, and a washer 3. The bottom plate positioning device 2 is installed in the jaws of the vise 1 after the washer is arranged on the side of the vise 1. The bottom plate positioning device 2 comprises a bottom plate 201, a pressing plate 202, and a positioning pin 203. The pressing plate 202 is arranged on the bottom plate 201. The pressing plate 202 is provided with a waist-shaped hole and screws are installed in the waist-shaped hole to fix the mold part 4 on the bottom plate 201. The front end of the pressing plate 202 contacts the mold part 4. The bottom plate 201 is also provided with a positioning pin 203 and a positioning protrusion 204 for positioning the mold part 4. The positioning pin 203 corresponds to the position of the process hole on the mold part 4, and the positioning protrusion 204 corresponds to the groove on the part. In this embodiment, the number of the positioning pin 203 is two, and the number of the positioning protrusion 204 is one. The shim is used to place the parts on a specific plane to keep them level, and the vise 1 is used to quickly fix the positioning plate. There can also be two bottom plate positioning devices 2 for quick product interchange and quick clamping to improve processing efficiency. Of course, it is necessary to set a positioning structure for positioning the bottom plate positioning device 2. The vise 1 is a commonly used fixture for mechanical processing and is widely used in mechanical processing to fix the workpiece. The number of the pressing plates 202 is two or more, and the pressing plates 202 are arranged around the edge of the part and are evenly spaced. The pressing plates 202 mainly play the role of fixing the edge of the part so that the processing is not affected.

[0026] The positioning pin 203 is arranged at a position that matches the process hole of the part. The pin is movably arranged, and a corresponding pin hole is arranged on the base plate 201. The position of the pin hole limits the pin position to achieve positioning. The size of the pin matches the size of the pin hole and the process hole used for positioning on the part.

[0027] A strip-shaped positioning protrusion 204 is provided on the bottom plate 201. The positioning protrusion 204 is located in the middle of the pressure plate 202 installed corresponding to the mold part 4. The positioning protrusion 204 can also be in other shapes. The long strip shape is conducive to achieving positioning in both horizontal and vertical directions.

[0028] The bottom plate 201 is provided with a material discharge chute 205, which is used for convenient removal of products after processing.

[0029] The shims 3 are arranged on the two sides of the base plate positioning device 2 that are in contact with the vise 1. The shims 3 include side shims 301 and bottom shims 302. The side shims 301 overlap with the bottom shims 302. The side shims 301 are located between the sides of the vise 1 and the base plate 201. The bottom shims 302 are located at the lower part of the base plate 201 to support the base plate 201 so that the base plate 201 is suspended. This is conducive to the falling of processing waste chips and will not affect the installation accuracy.

[0030] The front end of the pressing plate 202 is set to be a pointed shape, and the bottom surface of the front end of the pressing plate 202 is a flat surface, which can be pressed more conveniently. Of course, the pressing position can also be set to a special conformal depression to facilitate precise positioning.

[0031] The waist-shaped hole of the pressing plate 202 is stepped and is installed using hexagon socket screws. The waist-shaped hole can conveniently install and adjust the front and rear positions of the pressing plate 202, making it convenient to remove the mold part 4.

[0032] The positioning base plate 201 is a regular rectangular plate, the longer side of which serves as the clamping side of the vise 1 , and the side surface of the rectangular plate is relatively regular, so that a good matching installation can be achieved.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention. The protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A CNC milling parts processing positioning fixture, characterized in that: It includes a vise, a base plate positioning device, and a shim. The base plate positioning device is installed in the jaws of the vise after a shim is set on the side. The base plate positioning device includes a base plate, a pressure plate, and a positioning pin. The pressure plate is set on the base plate. A waist-shaped hole is set on the pressure plate, and screws are installed in the waist-shaped hole to fix the mold part on the base plate. The front end of the pressure plate contacts the mold part. The base plate is also provided with a positioning pin and a positioning protrusion for positioning the mold part.

2. A CNC milling parts machining positioning fixture according to claim 1, characterized in that: The number of the pressing plates is two or more, and the pressing plates are arranged around the edge of the part and are evenly spaced.

3. A CNC milling parts machining positioning fixture according to claim 1, characterized in that: The positioning pin is arranged at a position that matches the process hole of the part, the pin is movably arranged, and a pin hole is correspondingly arranged on the bottom plate.

4. A CNC milling parts machining positioning fixture according to claim 1, characterized in that: A strip-shaped positioning protrusion is arranged on the bottom plate, and the positioning protrusion is located at the middle position of a pressing plate installed corresponding to the mold part.

5. The CNC milling parts machining positioning fixture according to claim 1 is characterized in that: A material discharge trough is arranged on the bottom plate.

6. A CNC milling parts machining positioning fixture according to claim 1, characterized in that: The shims are arranged on two sides of the base plate positioning device in contact with the vise. The shims include side shims and bottom shims. The side shims overlap with the bottom shims. The side shims are located between the vise and the side of the base plate. The bottom shims are located at the lower part of the base plate to support the base plate so that the base plate is suspended.

7. The CNC milling parts machining positioning fixture according to claim 1, characterized in that: The front end of the pressing plate is configured to be in a pointed shape, and the bottom surface of the front end of the pressing plate is a flat surface.

8. The CNC milling parts machining positioning fixture according to claim 1, characterized in that: The waist-shaped hole of the pressing plate is stepped and is installed by using hexagon socket screws.

9. The CNC milling parts machining positioning fixture according to claim 1, characterized in that: The bottom plate is a regular rectangular plate, and the longer side serves as the clamping side of the vise.

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