Milling tool for milling groove and face of special-shaped pom plastic profile

Abstract

The utility model relates to the field of machining discloses a kind of special-shaped POM plastics section bar face milling groove processing frock, including the clamping body of cuboid, the left and right sides of clamping body are equipped with 2 mirror image symmetries clamping position, a positioning groove is arranged on clamping position in the length direction of clamping body near its side edge, for the bottom baffle of accommodating and positioning workpiece, at least one row of adsorption holes is equipped in the opposite inner side of positioning groove, closed cavity is equipped in clamping body with each adsorption hole intercommunication, the side surface of clamping body is also equipped with the air extraction joint being interconnected with the closed cavity, air extraction joint is connected vacuum generator by air extraction pipe, vacuum generator connects high-pressure gas source.The utility model can realize one clamping 2 workpieces and complete processing, and using vacuum adsorption mode to fix workpiece, clamping is reliable, easy and simple to operate, can effectively improve processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of machining, and in particular to a tooling for milling and slotting irregularly shaped POM plastic profiles. Background Technology

[0002] There is one as shown in the attached document. Figure 3 The irregularly shaped POM plastic profile product shown has a groove on one side, with a height difference between the two sides of the groove. One end of the groove is set as a slope, and the other side has a retaining edge.

[0003] Currently, the processing of this product involves using a single piece of POM plastic sheet to fix it on a CNC machine tool using a vacuum chuck. Multiple products are then sequentially machined onto the upper surface of the sheet (completing the edge processing on one side of each product). To prevent cutting the vacuum chuck, a cutting allowance is left during processing; therefore, the bottoms of each product are connected. Then, a sawing machine is used to cut each product out, as shown in the attached image. Figure 4 As shown, finally utilize the attached... Figure 4 The fixture shown is used for clamping, and milling and grooving are performed on the other side of the machine on a CNC machine tool. The existing fixture has the following problems:

[0004] 1. This fixture has only one clamping position, and can only complete the processing of one product at a time. Not only is the processing efficiency low, but each product also needs to be cut out in the cutting process, which increases the load on the cutting process and seriously affects the processing efficiency.

[0005] 2. The fixture positions the workpiece by setting a positioning groove 1.1 on one side and uses two or more pressure plates 6ˊ on the side to press the workpiece laterally. This fixing method is not only unreliable, but also requires constant disassembly and assembly of the pressure plates when clamping the workpiece, which is complicated and has low clamping efficiency.

[0006] Therefore, it is necessary to provide a milling and grooving fixture for irregularly shaped POM plastic profiles that is reliable in clamping, easy and simple to operate, and can effectively improve processing efficiency to solve the above problems. Utility Model Content

[0007] This utility model aims to solve the technical problems existing in the prior art. To this end, this utility model provides a milling and grooving fixture for irregularly shaped POM plastic profiles that is reliable in clamping, convenient and simple to operate, and can effectively improve processing efficiency.

[0008] The technical solution adopted by this utility model to solve its technical problem is:

[0009] A milling and grooving fixture for irregularly shaped POM plastic profiles is provided, including a cuboid-shaped clamping body. The clamping body has two mirror-symmetrical clamping positions on its left and right sides. A positioning groove is provided on the clamping position near its side along its length to accommodate and position the bottom edge of the workpiece. At least one row of suction holes is provided on the opposite inner side of the positioning groove. The clamping body has a closed cavity that communicates with each suction hole. The side of the clamping body also has a vacuum joint that communicates with the closed cavity. The vacuum joint is connected to a vacuum generator through a vacuum pipe. The vacuum generator is connected to a high-pressure gas source.

[0010] In some optional embodiments, the clamping body is further provided with multiple single-acting cylinders on both sides of the workpiece bottom edge area. The push rod of the single-acting cylinder extends into the positioning groove and is used to press the workpiece edge together. Each single-acting cylinder is connected to a high-pressure air source.

[0011] In some optional embodiments, a pressure strip is also provided in the positioning groove, and the back of the pressure strip is fixedly connected to the push rod of each single-acting cylinder.

[0012] In some optional embodiments, a two-position three-way valve is also included. The inlet of the two-position three-way valve is connected to a high-pressure air source, and the outlet is connected to a first air supply pipe and a second air supply pipe via a three-way valve. The first air supply pipe is connected to each single-acting cylinder via multiple branch pipes, and the second air supply pipe is connected to the air inlet of a vacuum generator.

[0013] In some alternative implementations, the spacing between the two clamping positions is equal to the distance between two adjacent workpieces before the workpiece cutting process.

[0014] In some optional embodiments, the distribution range of the adsorption holes on the clamping body is such that the workpiece is not exposed after clamping.

[0015] In some optional embodiments, a sealing groove is provided around the adsorption hole, and a sealing strip is provided inside the sealing groove. The adsorption holes at each clamping position are connected by a longitudinal groove, and the longitudinal groove has multiple transverse grooves along its length.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model can clamp two workpieces at once and complete the processing. It uses vacuum adsorption to fix the workpieces, which is reliable, convenient and simple to operate, and can effectively improve processing efficiency.

[0018] 2. The single-acting cylinders designed on both sides of the clamping body can further clamp the workpiece. It can be used in conjunction with vacuum adsorption to reliably fix the workpiece. It also makes the tooling redundant and will not lose the ability to fix the workpiece if the vacuum generator is damaged.

[0019] 3. Vacuum adsorption and single-acting cylinders are synchronously controlled by a two-position three-way valve, which simplifies the control air path and makes operation convenient and quick.

[0020] 4. The spacing between the two clamping positions is designed to be the distance between two adjacent workpieces before the cutting process, so that the cutting process can cut two workpieces as a group, effectively reducing the production load of the cutting process and improving production efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0022] Figure 1 This is a clamping diagram of the milling and slotting tooling for irregularly shaped POM plastic profiles provided by this utility model;

[0023] Figure 2 This is a schematic diagram of the clamping principle of the milling and slotting tooling for irregularly shaped POM plastic profiles provided by this utility model;

[0024] Figure 3 This is a structural diagram of the finished product of the irregularly shaped POM plastic profile provided by this utility model;

[0025] Figure 4 This is a clamping diagram of an existing fixture for milling and grooving irregularly shaped POM plastic profiles.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1—Clamp body, 1.1—Positioning groove, 1.2—Adsorption hole, 1.3—Enclosed cavity, 1.4—Sealing groove, 1.5—Longitudinal groove, 1.6—Transverse groove, 2—Air extraction connector, 3—Vacuum generator, 4—Sealing strip, 5—Single-acting cylinder, 6—Pressure strip, 6ˊ—Pressure plate, 7—Two-position three-way valve, 8—Three-way valve, a—Side guard. Detailed Implementation

[0028] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first," "second," etc., used in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. The terms "installed," "connected," and "joined" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] Example 1

[0034] As attached Figure 1 and attached Figure 2As shown, this embodiment provides a milling and grooving fixture for irregularly shaped POM plastic profiles, including a rectangular clamping body 1. Two mirror-symmetrical clamping positions are provided on the left and right sides of the clamping body. A positioning groove 1.1 is provided on each clamping position near its side along its length. The width of the positioning groove is greater than the thickness of the bottom edge a of the workpiece, and the depth is greater than the height of the edge a. It can accommodate the bottom edge of the workpiece while positioning the workpiece. At least one row of adsorption holes 1.2 is provided on the inner side of the positioning groove 1.1. A closed cavity 1.3 communicating with each adsorption hole 1.2 is provided inside the clamping body 1. An air extraction connector 2 communicating with the closed cavity 1.3 is also provided on the side of the clamping body 1. The air extraction connector 2 is connected to a vacuum generator 3 via an air extraction pipe. The vacuum generator 3 is connected to a high-pressure gas source. High-pressure gas flows through the vacuum generator, creating a negative pressure at the negative pressure port of the vacuum generator, drawing out the air from the closed cavity to form a vacuum, thereby achieving vacuum adsorption of the workpiece and fixing it in place. The workpiece can be released by cutting off the gas source.

[0035] The tooling designed in this embodiment can clamp two workpieces at once and complete the processing. It uses vacuum adsorption to fix the workpieces, which is reliable, convenient and simple to operate, and can effectively improve processing efficiency.

[0036] Preferably, in this embodiment, the distribution range of the adsorption holes 1.2 on the fixture body 1 is such that the workpiece is not exposed after being clamped, thus ensuring the vacuum adsorption effect.

[0037] Furthermore, in this embodiment, a sealing groove 1.4 is provided around the adsorption hole 1.2, and a sealing strip 4 is provided inside the sealing groove 1.4. The adsorption holes 1.2 at each clamping position are connected by a longitudinal groove 1.5, and the longitudinal groove 1.5 has multiple transverse grooves 1.6 along its length. This design can increase the contact area between the vacuum adsorption and the workpiece, and improve the vacuum adsorption effect.

[0038] Preferably, in this embodiment, the distance L1 between the two clamping positions is equal to the distance L2 between two adjacent workpieces before the workpiece cutting process. This design allows the cutting process to cut the workpiece into the shape shown below. Figure 1 and attached Figure 2 The product shown is a product where two workpieces are connected together as a group. Compared to cutting them into individual products, this can greatly improve the work efficiency of the process and reduce the labor intensity of workers.

[0039] Example 2

[0040] Based on Example 1, as shown in the appendix Figure 1 and attached Figure 2As shown, in this embodiment, multiple single-acting cylinders 5 are also provided on both sides of the clamping body 1 in the area of ​​the bottom edge a of the workpiece (one end of the cylinder is driven by compressed air, and the other end is connected to the atmosphere. The reset is driven by a spring. This type of cylinder is a mature product and will not be described in detail here). The push rod of the single-acting cylinder 5 extends into the positioning groove 1.1 and is used to press the edge of the workpiece. Each single-acting cylinder is connected to a high-pressure air source.

[0041] This embodiment, by designing single-acting cylinders on both sides of the clamping body, can further clamp the workpiece. It can be used in conjunction with vacuum adsorption to reliably fix the workpiece, and also makes the tooling redundant, so that the vacuum generator will not be damaged and lose its ability to fix the workpiece.

[0042] Preferably, the positioning groove 1.1 is further provided with a pressure strip 6. The back of the pressure strip 6 is fixedly connected to the push rod of each single-acting cylinder 5. The pressure strip can distribute the force of the single-acting cylinder to the edge of the product, so as to avoid local pressure on the product.

[0043] It is worth noting that the clamping body and pressure strip described in this embodiment are both made of nylon material, which can effectively prevent scratches on the product.

[0044] Example 3

[0045] Based on Example 2, as shown in the appendix Figure 2 As shown, this embodiment is designed with a two-position three-way valve 7. The inlet end of the two-position three-way valve 7 is connected to a high-pressure air source, and the outlet end is connected to the first air supply pipe and the second air supply pipe through a three-way valve 8. The first air supply pipe is connected to each single-acting cylinder 5 through multiple branch pipes, and the second air supply pipe is connected to the air inlet of the vacuum generator 3.

[0046] In this embodiment, vacuum adsorption and single-acting cylinder are synchronously controlled by a two-position three-way valve, which simplifies the control path and makes operation convenient and quick.

[0047] During the actual processing, the workpiece to be processed is arranged as shown in the attached figure. Figure 2 As shown, the product is placed on the clamp, and the two-position three-way valve is controlled to open the high-pressure gas source of the vacuum generator and the single-acting cylinder. The vacuum generator generates a vacuum to adsorb the product, while the single-acting cylinder presses against the product's retaining edge. Then, the attached... Figure 2 The dotted lines shown represent the milling and grooving processes performed from top to bottom. Specifically, the milling is completed first to the higher side of the product, then the grooving is completed on both sides of the workpiece, and finally the milling of the inclined surface at one end of the product is completed.

[0048] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A milling and grooving fixture for irregularly shaped POM plastic profiles, characterized in that: The device includes a rectangular clamping body with two mirror-symmetrical clamping positions on its left and right sides. Each clamping position has a positioning groove along its length near its side for accommodating and positioning the bottom edge of the workpiece. The positioning groove has at least one row of adsorption holes on its inner side. The clamping body has a closed cavity that communicates with each adsorption hole. The side of the clamping body also has a vacuum joint that communicates with the closed cavity. The vacuum joint is connected to a vacuum generator through a vacuum pipe. The vacuum generator is connected to a high-pressure gas source.

2. The milling and grooving fixture for irregularly shaped POM plastic profiles according to claim 1, characterized in that: The clamping body is equipped with multiple single-acting cylinders on both sides of the workpiece bottom edge area. The push rod of the single-acting cylinder extends into the positioning groove to press the workpiece edge. Each single-acting cylinder is connected to a high-pressure air source.

3. The milling and grooving fixture for irregularly shaped POM plastic profiles according to claim 2, characterized in that: The positioning groove is also provided with a pressure strip, and the back of the pressure strip is fixedly connected to the push rod of each single-acting cylinder.

4. The milling and grooving fixture for irregularly shaped POM plastic profiles according to claim 2, characterized in that: It also includes a two-position three-way valve, the inlet of which is connected to a high-pressure air source, and the outlet is connected to a first air supply pipe and a second air supply pipe via a three-way valve. The first air supply pipe is connected to each single-acting cylinder via multiple branch pipes, and the second air supply pipe is connected to the air inlet of the vacuum generator.

5. The milling and grooving fixture for irregularly shaped POM plastic profiles according to any one of claims 1 to 4, characterized in that: The distance between the two clamping positions is equal to the distance between two adjacent workpieces before the workpiece cutting process.

6. The milling and grooving fixture for irregularly shaped POM plastic profiles according to claim 5, characterized in that: The distribution range of the adsorption holes on the clamping body is such that the workpiece is not exposed after clamping.

7. The milling and grooving fixture for irregularly shaped POM plastic profiles according to claim 6, characterized in that: The adsorption hole is surrounded by a sealing groove, and a sealing strip is provided inside the sealing groove. The adsorption holes at each clamping position are connected by a longitudinal groove, and the longitudinal groove has multiple transverse grooves along its length.

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