Linear sliding table for machining long-size workpiece

Abstract

The utility model relates to the technical field of sliding tables, in particular to a linear sliding table for machining long-size workpieces, which comprises a bottom plate, a platform is slidably connected onto the bottom plate, the sliding direction of the platform is the length direction of the bottom plate, the platform is used for fixedly mounting workpieces, and the platform can extend out by a section relative to a cantilever of the bottom plate after sliding. According to the scheme, the problem that at present, due to the fact that the machining area of machining is limited, machining of workpieces exceeding the length of the machining area is difficult to complete through one-time clamping is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sliding table, specifically relates to a linear sliding table for long size workpiece processing. BACKGROUND

[0002] In the current machining, a linear sliding table or a cross sliding table capable of moving on a horizontal plane within a certain range is arranged in a machine tool, a workpiece is fixedly installed on a worktable surface of the sliding table, and the driving of the sliding table is controlled according to the machining requirement to realize the movement of the workpiece in the horizontal plane.

[0003] The length of the workpiece that can be clamped and machined at one time by a conventional machine tool is generally not more than 0.8 meters, that is, the length of the machining area is not more than 0.8 meters, but for some long-size workpieces, such as workpieces longer than 0.8 meters, up to 1 meter, or even about 1.6 meters, the stroke of the sliding table is short, and the range of the tool operation of the machine tool is only within a limited space, which leads to the fact that the existing long-size workpieces need to be clamped at least twice to complete machining. For example, the maximum size that can be machined by the machine tool is 0.8 meters, and the actual workpiece to be machined is 1 meter. The workpiece is first fixedly installed to the left to facilitate the right segment of the workpiece to be located in the machining area, so that the machine tool can machine the right segment of the workpiece. Then the workpiece is disassembled and fixedly installed to the right, so that the left segment of the workpiece to be machined is located in the machining area, and finally the machining of the workpiece is realized. The main problem of this method is that the two clamping processes are time-consuming and laborious, and the machining precision is difficult to improve. In addition, after the two clamping processes, the product machined has a joint mark at the joint of the two halves, and workers need to polish the joint mark separately to ensure the appearance quality. Even if the polishing is done, it cannot completely ensure consistency, thereby affecting the final product precision.

[0004] In the prior art, there is a method of machining long-size workpieces by using a specially designed machine tool, such as a double-tool-holder high-efficiency high-precision numerical control machine tool for machining long thin-walled pipe parts with patent publication number CN221791728U. This design can indeed realize the machining of long-size workpieces, but it needs to customize the machine tool, which is very costly, and is not practical for machining a small number of batches of products. UTILITY MODEL CONTENTS

[0005] The utility model intends to provide a linear sliding table for long-size workpiece processing to solve the problem that it is difficult to realize one-time clamping and complete machining for workpieces longer than the machining area of the machine tool.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The linear slide table for processing long-size workpieces comprises a base plate, a platform is slidably connected to the base plate, the sliding direction of the platform is the length direction of the base plate, the platform is used for fixing and mounting the workpiece, and the platform can cantilever out a section relative to the base plate after sliding.

[0008] The principle and advantages of the scheme are as follows: when processing the workpiece with a very long size, the workpiece is fixed on the platform, and one side area of the workpiece after being fixed can fall into the machining area of the machining, and the area of the workpiece which does not fall into the machining area can be moved to the machining area after the platform moves relative to the base plate, and the area which has completed machining can cantilever out relative to the base plate with the platform. The platform which can cantilever out relative to the base plate is used to adjust the processable area of the workpiece, so that the machining of the workpiece with a size greater than the size of the machining area of the machine tool can be completed after the workpiece is fixed and mounted on the platform once, compared with the prior art, the workpiece does not need to be disassembled, clamped and turned over again, which helps to improve the machining efficiency, machining quality and reduce the machining cost.

[0009] In addition, in the prior art, the machine tool is either without a shield, such as a common drilling machine or a grinding machine, or with a side opening door numerical control machine tool. For the machine tool without a shield, the linear slide table of the scheme is directly fixed on the slide table or workbench of the existing machine tool (such as the base plate is directly fixed on the top of the slide table or workbench of the existing machine tool), or can directly replace the linear slide table of the existing machine tool (that is, the base plate is fixed and mounted, and the platform of the scheme is used as the workbench surface for mounting the workpiece); and for the numerical control machine tool with a shield, only the side opening door needs to be disassembled or opened, so that the platform of the linear slide table of the scheme can cantilever close to the side opening door or extend to the outside of the machine tool through the side opening door after the linear slide table of the scheme is installed on the workbench of the existing numerical control machine tool, so that the one-time clamping machining of the long-size workpiece can also be realized on the existing machine tool, and the applicability of the scheme is improved.

[0010] Preferably, as an improvement, a plurality of first electromagnets are fixed on the base plate along the length direction, and the first electromagnets are used for adsorbing and fixing the platform. The first electromagnets of the scheme are used to assist and strengthen the fixation of the platform relative to the base plate after the platform stops moving, which further helps to improve the machining precision of the long-size workpiece.

[0011] Preferably, as an improvement, the plurality of first electromagnets are arranged in a horizontal and vertical array on the base plate, and the top surface of the first electromagnet can be connected with the bottom surface of the platform, so that the adsorption strength of the platform is higher.

[0012] Preferably, as an improvement, the platform and the base plate are connected by sliding rails and sliding blocks, one of which is installed on the platform and the other on the base plate, so as to realize the sliding connection of the platform relative to the base plate through the concave-convex matching sliding blocks and sliding rails.

[0013] Preferably, as an improvement, the sliding rails are fixed on the bottom surface of the platform, and the sliding blocks are fixed on the top surface of the base plate, and each sliding rail is provided with a plurality of sliding blocks, so as to facilitate the stability of the platform after cantilever extension.

[0014] Preferably, as an improvement, the platform is provided with anti-warping rollers at both ends of the cantilevered end of the platform, and the base plate is provided with a mounting seat arranged in the length direction, the mounting seat abuts against the anti-warping rollers from above, and the anti-warping rollers can roll along the length direction of the mounting seat.

[0015] Beneficial effects: when the scheme is adopted, the end far away from the cantilevered end of the platform can be pressed by the mounting seat after the platform is cantilevered, so as to avoid the warping problem caused by the cantilever of the platform, and further improve the machining precision.

[0016] Preferably, as an improvement, the base plate is further provided with a second electromagnet, and the magnetic attraction surface of the second electromagnet faces downward, so as to facilitate the fixing and installation of the base plate by magnetic attraction, such as the magnetic attraction fixing of the linear slide of the scheme on the machine tool base by the magnetic attraction of the second electromagnet, or the magnetic attraction fixing of the linear slide of the scheme on the workbench of the existing slide of the machine tool by the magnetic attraction of the second electromagnet, thereby reducing the disassembly difficulty of the linear slide of the scheme.

[0017] Preferably, as an improvement, the end of the platform without cantilever is connected with the base plate through a telescopic shield, which is used to shield the base plate from above after the platform moves, so as to ensure that the top surface of the base plate is completely shielded by the telescopic shield and the platform, thereby preventing the metal chips generated during machining from falling onto the base plate and protecting the base plate.

[0018] Preferably, as an improvement, a ball screw pair is installed between the base plate and the platform, the screw rod of the ball screw pair is rotationally connected to the base plate, and the nut of the ball screw pair is fixedly connected to the platform. When the scheme is adopted, the movement of the platform can be controlled by controlling the rotation of the screw rod, which is simple and convenient to operate.

[0019] Preferably, as an improvement, the screw rod is driven by a servo motor fixed on the base plate, which facilitates automatic control and improves the degree of automation.

[0020] Preferably, as an improvement, the top surface of the platform is provided with at least one of a mounting groove, a suction cup and a threaded hole for fixing the workpiece, and the mounting groove is a reversed T-shaped groove or a dovetail groove. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A three-dimensional structural schematic view of an embodiment of the present application.

[0022] Figure 2 A three-dimensional structural schematic view of an embodiment of the present application after the platform cantilever extends a certain length.

[0023] Figure 3 A three-dimensional structural schematic view of an embodiment of the present application. Figure 1

[0024] Figure 4 A three-dimensional structural schematic view of an embodiment of the present application. Figure 1

[0025] Figure 5 A top view of an embodiment of the present application. Figure 4

[0026] A three-dimensional structural schematic view of an embodiment of the present application. Figure 6 Figure 3 A three-dimensional structural schematic view of an embodiment of the present application.

[0027] Figure 7 A bottom view of a base plate of an embodiment of the present application.

[0028] Figure 8 A three-dimensional structural schematic view of an embodiment of the present application after the platform is rotated 180°. Figure 1

[0029] A three-dimensional structural schematic view of an embodiment of the present application. Figure 9 Figure 8 A three-dimensional structural schematic view of an embodiment of the present application. DETAILED DESCRIPTION

[0030] The following will be further described in detail through specific embodiments:

[0031] The reference signs in the drawings of the specification include: a base plate 1, a platform 2, a telescopic shield 3, a slide rail 41, a slide block 42, a ball screw pair 5, a servo motor 51, a first electromagnet 6, a connecting seat 71, an anti-warping roller 72, a mounting seat 8, a containing groove 81, an anti-warping groove 82, a second electromagnet 9, a mounting groove 21, a suction cup 22.

[0032] The embodiments are basically as shown in the drawings. Figures 1 to 9

[0033] ​​​​​The linear slide table for long workpiece machining comprises a base plate 1, a platform 2 and a telescopic shield 3, the platform 2 is above the base plate 1, the length of the platform 2 is less than the length of the base plate 1, the length of the platform 2 is greater than 1 times the length of the machining area of the machine tool and less than 2 times the length of the machining area of the machine tool, so as to facilitate the machining of the workpiece close to 2 times the length of the machining area.

[0034] The telescopic shield 3 covers the part of the base plate 1 not covered by the platform 2, and is installed between the end of the platform 2 and the end of the base plate 1. The platform 2 is slidably connected to the base plate 1 along the length direction of the base plate 1, and is used to fixedly install the workpiece. After the platform 2 slides, it can cantileverly extend from the base plate 1 by a certain length. The sliding of the platform 2 drives the extension or shortening of the connected telescopic shield 3, so as to ensure that the part of the base plate 1 not covered by the platform 2 is always covered by the telescopic shield 3, avoiding the falling of foreign matters or metal machining waste on the base plate 1.

[0035] In order to realize stable and accurate sliding of the platform 2 relative to the base plate 1, a slide rail 41 is fixed to the bottom of the platform 2 and a slide block 42 is fixed to the top of the base plate 1, and the platform 2 and the base plate 1 are slidably connected through the slide rail 41 and the slide block 42. Each slide rail 41 corresponds to a plurality of slide blocks 42 in concave-convex matching.

[0036] A ball screw pair 5 is installed between the base plate 1 and the platform 2, the screw rod of the ball screw pair 5 is rotatably connected to the base plate 1, and the nut of the ball screw pair 5 is fixedly connected to the platform 2.

[0037] In one way, the end of the screw rod penetrates through the cover plate fixed to the end of the base plate 1 and is fixedly connected with a hand wheel, and the horizontal movement of the nut of the ball screw pair 5 is controlled by the rotation of the hand wheel to realize manual control. This manual control mode is a prior art on the existing slide table of the machine tool, and will not be described in detail in this embodiment.

[0038] In another embodiment, one end of the screw rod is connected with a servo motor 51, and the movement of the nut is realized by the forward and reverse driving of the servo motor 51. The servo motor 51 can also be connected with a control, so as to accurately control the movement distance of the platform 2 by controlling the starting time and rotating speed of the servo motor 51, and improve the degree of automation.

[0039] In one way, in order to ensure that the platform 2 does not slide relative to the base plate 1 during machining, a plurality of first electromagnets 6 are fixed on the base plate 1 along the length direction, and the first electromagnets 6 are used to adsorb and fix the platform 2. The first electromagnets 6 are arranged in a horizontal and vertical array on the base plate 1.

[0040] In one embodiment, to ensure that the platform 2 does not warp during cantilever extension due to excessive weight of the workpiece or long-term cantilevering, a connecting seat 71 is fixed to the bottom of the platform 2, and an anti-warping roller 72 is installed on the connecting seat 71. The anti-warping roller 72 is located at both ends of the platform 2 where the platform 2 can be cantilevered, and the anti-warping roller 72 is located on the same side of the platform 2 as the telescopic cover 3. A mounting seat 8 is fixed to the bottom plate 1 and arranged in the length direction. The mounting seat 8 is provided with a receiving groove 81 and an anti-warping groove 82. The opening of the receiving groove 81 faces upward, and the receiving groove 81 is used to fixedly install a first electromagnet 6. The magnetic attraction surface of the first electromagnet 6 faces upward, and the magnetic attraction surface of the first electromagnet 6 is attached to the bottom surface of the platform 2. The opening of the anti-warping groove 82 faces the side, and the length direction of the anti-warping groove 82 is parallel to the sliding rail 41. The anti-warping roller 72 extends into the opening of the anti-warping groove 82, and the anti-warping roller 72 abuts against the top wall of the anti-warping groove 82. The anti-warping groove 82 not only presses the anti-warping roller 72 downward, but also limits the movement area of the anti-warping roller 72 in the form of a groove.

[0041] The anti-warping roller 72 adopts a bearing, so that during the cantilever extension of the platform 2, the contact between the anti-warping roller and the mounting seat 8 is rolling friction, reducing the wear of the contact between the two.

[0042] In one embodiment, to achieve better anti-warping effect, the anti-warping roller 72 has at least two groups distributed along the width direction of the platform 2. Each group of anti-warping rollers 72 has at least two anti-warping rollers 72. Each group of anti-warping rollers 72 is arranged along the length direction of the platform 2. In the embodiment, two anti-warping rollers 72 are taken as an example.

[0043] In one embodiment, to make the sliding table of the embodiment more simple and convenient to install on a machine tool, a second electromagnet 9 is fixed to the bottom plate 1. The magnetic attraction surface of the second electromagnet 9 faces downward, and the magnetic attraction surface of the second electromagnet 9 is parallel to the bottom surface of the bottom plate 1. The number of second electromagnets 9 can be one, two or more. In the embodiment, two second electromagnets 9 are taken as an example. The embodiment is convenient for fixing and installing the bottom plate 1 by magnetic attraction, such as fixing and installing the sliding table of the embodiment on the machine tool base by magnetic attraction of the second electromagnet 9, or fixing and installing the sliding table of the embodiment on the workbench of the machine tool with an existing sliding table by magnetic attraction of the second electromagnet 9, thereby reducing the difficulty of disassembling the sliding table of the embodiment.

[0044] The way to fix the workpiece on the platform 2 can be to provide an installation groove 21 on the platform 2 as shown in the accompanying drawings. Figure 8 The installation groove 21 is a reverse T-shaped groove or a dovetail groove. The workpiece is fastened on the platform 2 by inserting a T-shaped bolt into the installation groove 21 and cooperating with a locking nut and a pressing plate.

[0045] Of course, the way for fixing the workpiece on the platform 2 can also be that a plurality of positioning screw holes are arranged on the top surface of the platform 2, the positioning screw holes are aligned with the designed holes on the workpiece, and then the workpiece is locked on the platform 2 by bolts. Also, the suction cup 22 as shown in the figure can be arranged on the platform 2, and the workpiece is fixed by the suction of the suction cup 22. In addition, the combination of two or three of the mounting groove 21, the positioning screw hole and the suction cup 22 can also be used. Figure 9

[0046] The use method of the embodiment is as follows:

[0047] When the sliding table of the embodiment is used, the sliding table is first fixed and installed, for example, the bottom plate 1 is fixed on the machine base of the machine tool to realize the installation of the sliding table, or the bottom plate 1 is fixed on the working platform 2 of the existing machine tool to realize the fixed installation without disassembling the working platform of the existing machine tool.

[0048] After the installation of the sliding table is completed, when the workpiece with a very long size is machined, the workpiece is first fixed on the platform 2, and one side of the workpiece after being fixed can fall into the machining area of the machine tool to facilitate the segmented machining. Specifically, the workpiece on one side falls into the machining area to be machined, and the first electromagnet 6 is controlled to be powered on to attract and fix the platform 2 before each machining, so as to ensure the machining accuracy during the machining process of the machine tool.

[0049] After the machining of the side is completed, the first electromagnet 6 is controlled to be powered off, and the remaining area of the workpiece which does not fall into the machining area can be moved to the machining area by controlling the rotation of the lead screw, so that the platform 2 moves relative to the bottom plate 1, thereby moving the machining area of the workpiece which does not fall into the machining area to the machining area for machining, and the machining area which has been machined is cantilevered relative to the bottom plate 1 along with the platform 2.

[0050] The embodiment uses the platform 2 which can be cantilevered relative to the bottom plate 1 to adjust the machinable area of the workpiece, so that after the workpiece is fixed and installed on the platform 2 once, the machining of the workpiece with a size greater than the size of the machining area of the machine tool is completed, which helps to improve the machining efficiency, machining quality and reduce the machining cost.

[0051] The above is only an embodiment of the utility model, and the specific technical solutions and / or common knowledge of the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical solutions of the utility model, some modifications and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect and practicability of the utility model. The protection scope of the present application should be subject to the content of the claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.​

Claims

1. A linear slide for machining long workpieces, comprising a base plate, characterized in that: A platform is slidably connected to the base plate. The sliding direction of the platform is the length direction of the base plate. The platform is used to fix and install the workpiece. After the platform slides, it can extend a section cantilever relative to the base plate.

2. The linear slide for machining long workpieces according to claim 1, characterized in that: Multiple first electromagnets are fixed along the length of the base plate, and the first electromagnets are used to attract and fix the platform.

3. A linear slide for machining long workpieces according to claim 2, characterized in that: Multiple first electromagnets are arranged in a horizontal and vertical array on the base plate, and the top surface of the first electromagnet can be connected to the bottom surface of the platform.

4. A linear slide for machining long workpieces according to claim 1, characterized in that: The platform and the base plate are slidably connected by a slide rail and a slider. One of the slide rail and slider is installed on the platform, and the other is installed on the base plate.

5. A linear slide for machining long workpieces according to claim 4, characterized in that: The slide rail is fixed to the bottom surface of the platform, and the slider is fixed to the top surface of the base plate. Each slide rail has multiple sliders.

6. A linear slide for machining long workpieces according to claim 1, characterized in that: The platform is equipped with anti-tilting rollers, with one end of the anti-tilting rollers that can be cantilevered from the platform located at both ends of the platform. A mounting seat is fixed on the base plate along the length direction, and the mounting seat abuts against the anti-tilting roller from above, allowing the anti-tilting roller to roll along the length direction of the mounting seat.

7. A linear slide for machining long workpieces according to any one of claims 1-6, characterized in that: A second electromagnet is also fixed on the base plate, with the magnetic attraction surface of the second electromagnet facing downwards.

8. A linear slide for machining long workpieces according to any one of claims 1-6, characterized in that: The platform without a cantilever is connected to a telescopic cover between its end and the base plate. The telescopic cover is used to shield the base plate from above after the platform moves.

9. A linear slide for machining long workpieces according to any one of claims 1-6, characterized in that: A ball screw assembly is installed between the base plate and the platform. The screw of the ball screw assembly is rotatably connected to the base plate, and the nut of the ball screw assembly is fixedly connected to the platform.

10. A linear slide for machining long workpieces according to any one of claims 1-6, characterized in that: The top surface of the platform is equipped with at least one of the following for fixing workpieces: a mounting groove, a suction cup, and a screw hole. The mounting groove is an inverted T-shaped groove or a dovetail groove.

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