A stereoscopic mount for CNC machining

Abstract

The utility model discloses a kind of stereoscopic mounting seat for CNC processing, including pedestal, the pedestal is fixedly installed on CNC workbench, adjusting seat is installed above the pedestal, the upper end surface of the pedestal is opened to limit installation groove, limit fixed seat is slidably installed in the limit installation groove, the limit fixed seat is equipped with at least two and is respectively fixedly installed in the front and rear of adjusting seat, fixed in CNC workbench by pedestal, and adjustable adjusting seat is set on pedestal, limit fixed seat is slidably matched in limit installation groove, adjusting seat flexible adjustment and firm fixation are realized, while the stereoscopic positioning block on adjusting seat ensures workpiece positioning and improves heat conduction, three-dimensional medium flow channel directly takes away heat generated in cutting process by circulating cooling medium, effectively reduces workpiece temperature, avoids the formation of uneven thermal stress, thereby significantly reduce the warping or distortion of complex three-dimensional workpiece in processing, improve processing precision and product quality.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, specifically a three-dimensional mounting base for CNC machining. Background Technology

[0002] Computer numerical control (CNC) machining is a high-precision, high-efficiency subtractive manufacturing method in modern manufacturing. During the machining process, a large amount of cutting heat is generated at the contact area between the tool and the workpiece. If this heat cannot be dissipated in a timely and effective manner, it will cause a sharp increase in the local temperature of the workpiece, resulting in an uneven temperature field and thermal stress inside the workpiece.

[0003] For routine planar or simple contour machining, cutting fluid is typically used for cooling and lubrication. Cutting fluid effectively reduces the temperature of the cutting area, decreases friction, and assists in chip removal, thereby largely suppressing thermal deformation of the workpiece and ensuring machining accuracy.

[0004] However, with the increasing complexity of industrial products, more and more workpieces with complex curved surfaces, deep cavities, irregular structures, or requiring multi-angle three-dimensional cutting are emerging. When machining these workpieces, their geometry often leads to the following problems: During five-axis simultaneous machining, the area to be machined on the workpiece may be blocked by its own structure or fixture, and the poured cutting fluid cannot stably and continuously cover the actual tool-chip contact area, resulting in a sharp drop in cooling effect or even complete failure. Meanwhile, for workpieces undergoing three-dimensional cutting, in order to facilitate chip removal, it is sometimes necessary to stop pouring cutting fluid and use a high-pressure air gun to blow it out. This interrupts the already unstable cooling process, causing the workpiece to repeatedly go through the "heating-cooling" cycle, making the thermal stress distribution more complex.

[0005] For the reasons mentioned above, traditional casting-type cooling methods have limited effectiveness when machining complex three-dimensional workpieces. The thermal stress generated by uneven heating is gradually released during machining, leading to warping and twisting deformation. This deformation not only affects the dimensional accuracy and shape tolerances of the workpiece, increasing the scrap rate, but is also difficult to correct in subsequent finishing stages, thus limiting machining efficiency and product quality. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A three-dimensional mounting base for CNC machining includes a base, which is fixedly mounted on a CNC worktable; An adjustment seat is installed above the base; The upper end face of the base is provided with a limiting installation groove, and a limiting fixing seat is slidably installed in the limiting installation groove. There are at least two limiting fixing seats, which are respectively fixedly installed at the front and rear ends of the adjusting seat. The side wall of the limiting installation groove is provided with a limiting slide groove that runs through the front and rear. The side wall of the limiting fixing seat is formed with a limiting block that slides and engages in the limiting slide groove. The upper end face of the limiting fixing seat is provided with a through bolt limiting hole. The adjusting seat includes an adjusting mounting plate, the upper end surface of which is formed with a three-dimensional positioning block for positioning the workpiece; The three-dimensional positioning block has a three-dimensional medium flow channel that surrounds its perimeter.

[0008] As a further embodiment of this utility model: a guide rail support is fixedly installed on the inner bottom surface of the limiting mounting groove, an arc-shaped support groove is opened on the upper end surface of the guide rail support, a guide rail component is installed in the arc-shaped support groove, and a through guide rail mounting hole is opened on the limiting fixing seat, through which the guide rail component passes.

[0009] As a further embodiment of the present invention: the three-dimensional medium flow channel includes an upper flow channel and a lower flow channel, and an inlet main flow channel and an outlet main flow channel are connected between the upper flow channel and the lower flow channel; The main inlet channel is located on the upper surface of the three-dimensional positioning block and extends downward. The side wall of the main inlet channel is provided with inlet branch channels that are respectively connected to the upper flow channel and the lower flow channel. The main outlet channel is located on the side wall of the three-dimensional positioning block and extends inward. The side wall of the main outlet channel is provided with outlet branch channels that are respectively connected to the upper flow channel and the lower flow channel.

[0010] As a further aspect of this utility model: the diameter of the inlet main channel is larger than that of the outlet main channel.

[0011] As a further embodiment of this utility model: the outer wall of the three-dimensional positioning block is provided with a positioning groove that is adapted to the workpiece.

[0012] As a further embodiment of this utility model: a limiting mounting block is fixedly provided on the lower end surface of the adjusting mounting plate, and the limiting mounting block slides and abuts against the two side walls of the limiting mounting groove respectively.

[0013] As a further embodiment of this utility model: the upper end face of the limiting fixing seat is provided with a bolt mounting groove, and the bolt limiting hole is opened on the inner bottom surface of the bolt mounting groove.

[0014] As a further embodiment of this utility model: the outer wall of the base is provided with a base mounting groove, and the side wall of the base mounting groove is provided with a scale.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The base is fixed to the CNC worktable, and an adjustable adjustment seat is set on the base. The adjustable seat can be flexibly adjusted and firmly fixed by sliding cooperation of the limiting fixing seat in the limiting mounting groove. The three-dimensional positioning block on the adjustment seat ensures the positioning of the workpiece and improves heat conduction. The three-dimensional medium flow channel directly removes the heat generated during the cutting process through the circulating cooling medium, effectively reducing the workpiece temperature and avoiding the formation of uneven thermal stress. This significantly reduces the warping or twisting deformation of complex three-dimensional workpieces during processing, and improves the processing accuracy and product quality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the structure of this utility model with the workpiece; Figure 2 This is another three-dimensional view of the structure of this utility model with the workpiece; Figure 3 This is a three-dimensional structural view of the present invention; Figure 4 This is a three-dimensional view of the internal structure of this utility model; Figure 5 This is another three-dimensional view of the internal structure of this utility model; Figure 6 This is a three-dimensional structural view of the base in this utility model; Figure 7 This is a three-dimensional view of the adjusting seat in this utility model; Figure 8 This is a front view of the adjusting seat in this utility model; Figure 9 yes Figure 8 A cross-sectional view along the AA direction; Figure 10 This is a top view of the adjusting seat in this utility model; Figure 11 yes Figure 10 A cross-sectional view along the BB direction; The reference numerals and names in the figure are as follows: Base-101, Adjustment seat-103, Limiting mounting groove-104, Limiting fixing seat-105, Limiting slide groove-106, Limiting block-107, Bolt limiting hole-108, Adjusting mounting plate-109, Three-dimensional positioning block-110, Three-dimensional medium flow channel-111, Guide rail support-112, Arc-shaped support groove-113, Guide rail component-114, Guide rail mounting hole-115, Upper flow channel-116, Lower flow channel-117, Inlet main flow channel-118, Outlet main flow channel-119, Inlet branch flow channel-120, Outlet branch flow channel-121, Positioning groove-122, Limiting mounting block-123, Bolt mounting groove-124, Base mounting groove-125, Scale-126. Detailed Implementation

[0017] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-11 A three-dimensional mounting base for CNC machining includes a base 101, which is fixedly mounted on a CNC worktable; An adjustment seat 103 is installed above the base 101; The upper end face of the base 101 is provided with a limiting installation groove 104, and a limiting fixing seat 105 is slidably installed in the limiting installation groove 104. At least two limiting fixing seats 105 are provided and are respectively fixedly installed at the front and rear ends of the adjusting seat 103. The side wall of the limiting installation groove 104 is provided with a limiting slide groove 106 that runs through the front and rear. The side wall of the limiting fixing seat 105 is formed with a limiting block 107 that slides and engages in the limiting slide groove 106. The upper end face of the limiting fixing seat 105 is provided with a through bolt limiting hole 108. It should be noted that the CNC worktable is a common technical feature in the field of CNC machining. See the published patent "A multi-clamping worktable for CNC machine tools" with publication number CN206200567U. By sliding the limiting block 107 within the limiting groove 106, the limiting fixing seat 105 can only be adjusted in the front-to-back direction. After the adjusting seat 103 is installed in the predetermined position, the limiting fixing seat 105 is slidably adjusted to both sides of the adjusting seat 103 and forms a clamping effect on the adjusting seat 103. Then, the fastening bolt is screwed into the bolt limiting hole 108, so that the limiting fixing seat 105 is stably limited within the limiting mounting groove 104, and at the same time, the adjusting seat 103 is stably limited between at least two limiting fixing seats 105. Through the coordinated design of the base 101, the limiting mounting groove 104, the limiting fixing seat 105 and the limiting slide 106, the flexible and stable positioning of the adjusting seat 103 is achieved. This not only makes it easy to adapt to adjusting seats 103 of different sizes, but also ensures the compatibility and installation of the three-dimensional positioning block 110 with the workpiece from the source, which facilitates processing operations. The adjustment seat 103 includes an adjustment mounting plate 109, the upper end surface of which is formed with a three-dimensional positioning block 110 for positioning the workpiece. The three-dimensional positioning block 110 has a three-dimensional medium flow channel 111 that surrounds its periphery. The integrated cooling "3D positioning block 110" increases the effective contact area with the workpiece by creating a positioning groove 122 that perfectly matches the workpiece's shape. This transforms the easily obstructed "cast-type surface cooling" into "conductive volume cooling," allowing heat generated in the cutting area to be efficiently conducted to the positioning block body through a large contact area. Subsequently, the 3D medium flow channels 111 (upper flow channel 116 and lower flow channel 117) embedded inside the positioning block begin to function, with the cooling medium flowing through them, effectively providing the workpiece with a "built-in heat sink." It can actively, continuously and stably remove accumulated heat quickly. This cooling method, which acts directly on the workpiece positioning surface, solves the problem that the coolant cannot cover the tool-chip contact area due to geometric obstruction in multi-axis machining. It can also be connected with the high-pressure air gun blowing and chip removal process to achieve uninterrupted cooling. It significantly weakens the uneven temperature field and cyclic thermal stress formed on the workpiece during the machining process, thereby effectively suppressing the warping, twisting and other thermal deformation of complex three-dimensional workpieces (such as curved surfaces and C-shaped parts), directly improving the dimensional accuracy of the workpiece and greatly reducing the scrap rate. The workpiece is fixed to the CNC worktable by the base 101, and an adjustable adjustment seat 103 is set on the base 101. The adjustable seat 103 is flexibly adjusted and stably fixed by the limiting fixing seat 105 sliding in the limiting mounting groove 104. The three-dimensional positioning block 110 on the adjustment seat 103 ensures the positioning of the workpiece and improves heat conduction. The three-dimensional medium flow channel 111 directly removes the heat generated during the cutting process through the circulating cooling medium, effectively reducing the workpiece temperature and avoiding the formation of uneven thermal stress. This significantly reduces the warping or twisting deformation of complex three-dimensional workpieces during processing, and improves the processing accuracy and product quality.

[0019] In this embodiment of the utility model, a guide rail support 112 is fixedly installed on the inner bottom surface of the limiting mounting groove 104, and an arc-shaped support groove 113 is opened on the upper end surface of the guide rail support 112. A guide rail component 114 is installed in the arc-shaped support groove 113, and a through guide rail mounting hole 115 is opened on the limiting fixing seat 105. The guide rail component 114 passes through the guide rail mounting hole 115. By setting a guide rail system consisting of a guide rail support 112, an arc-shaped support groove 113, and a guide rail component 114 in the limiting mounting groove 104, and by having the guide rail component 114 pass through the guide rail mounting hole 115 on the limiting fixing seat 105, the guide rail pair is used to guide and constrain the linear movement of the limiting fixing seat 105. First, the stability and straightness of the limiting fixing seat 105 during the sliding adjustment process are enhanced, effectively preventing jamming and offset, thereby achieving smooth position adjustment. Secondly, the rigid support and guidance provided by the guide rail 114 significantly improves the clamping rigidity of the adjustment mounting plate 109 and the stability of the overall structure, and can better resist vibration during the processing. At the same time, the guide rail system ensures that the two limit fixing seats 105 can strictly follow the same path to move synchronously, so that the adjustment effect on both sides is consistent and avoids the phenomenon of skew or seizing caused by asynchrony.

[0020] In this embodiment of the present invention, the three-dimensional medium flow channel 111 includes an upper flow channel 116 and a lower flow channel 117, and an inlet main flow channel 118 and an outlet main flow channel 119 are connected between the upper flow channel 116 and the lower flow channel 117. The main inlet channel 118 is located on the upper surface of the three-dimensional positioning block 110 and extends downward. The side wall of the main inlet channel 118 is provided with inlet branch channels 120 that are respectively connected to the upper channel 116 and the lower channel 117. The main outlet channel 119 is opened on the side wall of the three-dimensional positioning block 110 and extends inward. The side wall of the main outlet channel 119 is provided with outlet branch channels 121 that are respectively connected to the upper flow channel 116 and the lower flow channel 117. It should be noted that the inlet main channel 118 and the outlet main channel 119 are respectively connected to auxiliary hydraulic devices for the flow of driving medium. The auxiliary hydraulic devices are common technologies in the field and will not be described in detail here. The cooling medium enters from the main inlet channel 118 on the upper surface of the three-dimensional positioning block 110, and is then evenly distributed to the upper flow channel 116 and the lower flow channel 117 through the inlet branch channel 120 opened on its side wall. This allows the cooling medium to flow synchronously and in parallel through the channels of the upper and lower layers inside the three-dimensional positioning block 110. Finally, the medium from the two branches merges into the main outlet channel 119 on the side wall and is discharged, thus constructing a three-dimensional, parallel, and widely covered circulating cooling network inside the positioning block. First, the surrounding structure combined with the upper and lower double-layer flow channels increases the heat exchange area in contact with the workpiece, ensuring rapid and uniform heat dissipation. Second, the parallel flow channel layout allows the cooling medium to flow through the upper and lower layers simultaneously and in equal amounts, reducing cooling dead zones and effectively avoiding thermal stress concentration caused by local temperature differences, thus ensuring stable heat dissipation of the workpiece during processing.

[0021] In this embodiment of the present invention, the diameter of the inlet main channel 118 is larger than that of the outlet main channel 119; By designing the diameter of the inlet main channel 118 to be larger than that of the outlet main channel 119, a "wide inlet, narrow outlet" flow channel pressure system is constructed: the coarser inlet main channel 118 can reduce the flow velocity and dynamic pressure of the cooling medium when it initially flows in, ensuring that the medium can be smoothly and sufficiently diverted to the upper and lower flow channels 117 through the inlet branch channel 120; while the narrower outlet main channel 119 will increase the flow resistance of the medium at the outlet. On the one hand, it can maintain a relatively high and stable pressure inside the flow channel system, forcing the cooling medium to have more sufficient heat exchange with the flow channel wall. On the other hand, by utilizing the principle of fluid continuity, it accelerates the discharge of the medium when it enters the narrow outlet, thereby effectively improving the overall circulation efficiency and removing more heat. This not only optimizes the uniformity of the flow distribution of the cooling medium in the complex three-dimensional flow channel network and prevents local cooling failure caused by uneven distribution, but also significantly enhances the heat exchange efficiency and the active heat dissipation capacity of the cooling system by establishing and maintaining the working pressure inside the flow channel.

[0022] In this embodiment of the utility model, the outer wall of the three-dimensional positioning block 110 is provided with a positioning groove 122 that is adapted to the workpiece; A positioning groove 122 adapted to the shape of the workpiece is opened on the outer wall of the three-dimensional positioning block 110. The mechanical interlocking is achieved by conformal fitting, while the contact area is expanded. The positioning groove 122 not only physically restricts the workpiece and ensures the stability and reliability of the clamping, but more importantly, it transforms the traditional point or line contact into a large-area curved conformal contact. This increases the effective heat exchange area between the cooling medium flow channel (especially the three-dimensional flow channel around the perimeter) and the workpiece. On the one hand, it improves the installation stability of the workpiece and can effectively suppress machining vibration; on the other hand, it allows the heat generated in the cutting area to be quickly and evenly discharged into the internal circulating cooling medium through the large contact surface.

[0023] In this embodiment of the present invention, a limiting mounting block 123 is fixedly provided on the lower end surface of the adjusting mounting plate 109, and the limiting mounting block 123 slides and abuts against the two side walls of the limiting mounting groove 104 respectively. By fixing a limiting mounting block 123 to the lower end face of the adjusting mounting plate 109, and simultaneously achieving sliding contact between the limiting mounting block 123 and the two side walls of the limiting mounting groove 104, an effective anti-tilting and anti-torsion mechanism is formed by the double-sided constraint of the limiting mounting block 123 in the groove, which enhances the overall rigidity and stability of the adjusting seat 103, effectively resisting the lateral cutting force and vibration generated during the processing, and preventing the mounting plate from shaking or deflecting; at the same time, the balanced contact and guidance on both sides ensure the smoothness of the movement during the adjustment process, avoiding unilateral wear or jamming.

[0024] In this embodiment of the utility model, the upper end face of the limiting fixing seat 105 is provided with a bolt mounting groove 124, and the bolt limiting hole 108 is provided on the inner bottom surface of the bolt mounting groove 124. By creating a bolt mounting groove 124 on the upper surface of the limiting and fixing seat 105 and setting the bolt limiting hole 108 on the inner bottom surface of the groove, a countersunk bolt receiving and guiding structure is constructed. The bolt mounting groove 124 provides a reliable receiving space for the bolt head or nut, effectively avoiding interference, scraping or accidental loosening that may occur when the bolt head slides on the adjusting seat 103 or protrudes during equipment operation; ensuring that the bolt always maintains a vertical force state during the tightening process, thus enhancing the stability of the entire mounting seat.

[0025] In this embodiment of the utility model, the outer wall of the base 101 is provided with a base mounting groove 125, and the side wall of the base mounting groove 125 is provided with a scale 126. By opening a base mounting groove 125 on the outer wall of the base 101 and setting a scale 126 on its side wall, the visual reference system formed by the scale 126 and the edge of the limiting mounting groove 104 provides the operator with accurate and intuitive linear position coordinates, so that the limiting fixing seat 105 can be pre-positioned and aligned according to the scale 126 when sliding adjustment, thereby improving the efficiency of installation and adjustment.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A three-dimensional mounting base for CNC machining, characterized in that, Includes a base (101), which is fixedly mounted on a CNC worktable; An adjustment seat (103) is installed above the base (101); The upper end face of the base (101) is provided with a limiting installation groove (104), and a limiting fixing seat (105) is slidably installed in the limiting installation groove (104). There are at least two limiting fixing seats (105) and they are respectively fixedly installed at the front and rear ends of the adjusting seat (103). The side wall of the limiting installation groove (104) is provided with a limiting slide groove (106) that runs through the front and back. The side wall of the limiting fixing seat (105) is formed with a limiting block (107) that slides in the limiting slide groove (106). The upper end face of the limiting fixing seat (105) is provided with a through bolt limiting hole (108). The adjusting seat (103) includes an adjusting mounting plate (109), the upper end surface of which is formed with a three-dimensional positioning block (110) for positioning the workpiece. The three-dimensional positioning block (110) has a three-dimensional medium flow channel (111) that surrounds the periphery.

2. A three-dimensional mounting base for CNC machining according to claim 1, characterized in that, The inner bottom surface of the limiting mounting groove (104) is fixedly equipped with a guide rail support (112), and the upper end surface of the guide rail support (112) is provided with an arc-shaped support groove (113). The arc-shaped support groove (113) is equipped with a guide rail component (114), and the limiting fixing seat (105) is provided with a through guide rail mounting hole (115). The guide rail component (114) passes through the guide rail mounting hole (115).

3. A three-dimensional mounting base for CNC machining according to claim 1, characterized in that, The three-dimensional medium flow channel (111) includes an upper flow channel (116) and a lower flow channel (117), and an inlet main flow channel (118) and an outlet main flow channel (119) are connected between the upper flow channel (116) and the lower flow channel (117). The main inlet channel (118) is located on the upper surface of the three-dimensional positioning block (110) and extends downward. The side wall of the main inlet channel (118) is provided with inlet branch channels (120) that are respectively connected to the upper flow channel (116) and the lower flow channel (117). The main outlet channel (119) is located on the side wall of the three-dimensional positioning block (110) and extends inward. The side wall of the main outlet channel (119) is provided with outlet branch channels (121) that are respectively connected to the upper flow channel (116) and the lower flow channel (117).

4. A three-dimensional mounting base for CNC machining according to claim 3, characterized in that, The diameter of the inlet main channel (118) is larger than that of the outlet main channel (119).

5. A three-dimensional mounting base for CNC machining according to claim 1, characterized in that, The outer wall of the three-dimensional positioning block (110) is provided with a positioning groove (122) that is adapted to the workpiece.

6. A three-dimensional mounting base for CNC machining according to claim 1, characterized in that, The lower end face of the adjustment mounting plate (109) is fixed with a limiting mounting block (123), and the limiting mounting block (123) slides and abuts against the two side walls of the limiting mounting groove (104).

7. A three-dimensional mounting base for CNC machining according to claim 1, characterized in that, The upper end face of the limiting fixing seat (105) is provided with a bolt mounting groove (124), and the bolt limiting hole (108) is opened on the inner bottom surface of the bolt mounting groove (124).

8. A three-dimensional mounting base for CNC machining according to any one of claims 1-7, characterized in that, The outer wall of the base (101) is provided with a base mounting groove (125), and the side wall of the base mounting groove (125) is provided with a scale (126).

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