Horizontal milling and boring machining center with anti-deviation structure

Abstract

The application relates to the technical field of numerical control systems, in particular to a horizontal milling and boring machining center with a deviation prevention structure, which comprises a machining center main body, a workbench, a mounting shell, adjusting rods and the like; the machining center main body is installed with the workbench; the workbench is detachably connected with the mounting shell; and the mounting shell is connected with a plurality of adjusting rods. Through the setting of the adjusting rods and first elastic members, each adjusting rod has the ability of independent up and down fine adjustment under the elastic action of the first elastic members, self-adaptive adjustment of the height difference of the workpiece bottom is realized, stable and uniform support of the workpiece in the initial placement stage is ensured, the clamp can more accurately and reliably clamp the workpiece, horizontal deviation caused by the uneven contact surface of the workpiece and the workbench is avoided, local support imbalance caused by the horizontal deviation is eliminated, the clamping effect is ensured to be stable, and the problems of workpiece loosening and vibration aggravation in the machining process are reduced.

Description

Technical Field

[0001] This invention relates to the field of CNC system technology, and in particular to a horizontal milling and boring machining center with an anti-offset structure. Background Technology

[0002] In existing horizontal machining centers, the workpiece is usually placed on the machining table first, then a special fixture is installed in place, and clamping force is applied to the side of the workpiece by the fixture to achieve reliable fixation of the workpiece during the machining process.

[0003] However, when the contact surface between the workpiece and the machining table is uneven (such as local protrusions or inconsistent heights), the workpiece is prone to horizontal displacement after placement, that is, the initial positioning of the workpiece is prone to deviation, which will affect the clamping effect of the fixture on the workpiece, causing the workpiece to loosen and vibrate more during the machining process, ultimately affecting the machining accuracy, and in severe cases, even causing tool damage or safety accidents. Summary of the Invention

[0004] To overcome the drawback that when the contact surface between the workpiece and the machining table is uneven, the workpiece is prone to horizontal displacement after placement, which will affect the clamping effect of the fixture on the workpiece and cause the workpiece to loosen and vibrate more during the machining process, the present invention provides a horizontal milling and boring machining center with an anti-displacement structure.

[0005] The technical solution of the present invention is: a horizontal milling and boring machining center with an anti-offset structure, comprising a machining center body and a worktable; the machining center body is equipped with the worktable; it also includes a mounting shell, adjusting rods and a first elastic element; the worktable is detachably connected to the mounting shell; the mounting shell is connected to a plurality of adjusting rods; each adjusting rod is fixedly connected to a first elastic element that cooperates with it to prevent workpiece offset, and each first elastic element is connected to the mounting shell.

[0006] Furthermore, it also includes a first switching plate, a second switching plate, a second elastic element, a first limiting component, and a second limiting component; the mounting shell is slidably connected to a first switching plate matching the number of adjusting rods, and each first switching plate is slidably connected to a corresponding adjusting rod, and each first switching plate is fixedly connected to a corresponding first elastic element; the mounting shell is slidably connected to a second switching plate matching the number of adjusting rods, and each second switching plate is slidably connected to a corresponding adjusting rod; each second switching plate is fixedly connected to a second elastic element, and each second elastic element is fixedly connected to a corresponding adjusting rod; the mounting shell is connected to a first limiting component for supporting the first switching plates, and the first limiting component is connected to all the first switching plates; the mounting shell is connected to a second limiting component for supporting the second switching plates, and the second limiting component is connected to all the second switching plates; the first elastic element is configured as a heavy-duty spring, and the second elastic element is configured as a light-duty spring.

[0007] Furthermore, the first limiting component includes a first mounting bracket, a first electric push rod, and a first support plate; the mounting shell is slidably connected to the first mounting bracket; the mounting shell is bolted to at least one first electric push rod, and the telescopic portion of the first electric push rod is bolted to the first mounting bracket; the first mounting bracket is bolted to a plurality of first support plates, and each first support plate is in contact with a corresponding first switching plate.

[0008] Furthermore, the second limiting component includes a second mounting bracket, a second electric push rod, and a second support plate; the mounting shell is slidably connected to the second mounting bracket; the mounting shell is bolted to at least one second electric push rod, and the telescopic portion of the second electric push rod is bolted to the second mounting bracket; the second mounting bracket is bolted to a plurality of second support plates, and each second support plate is in contact with a corresponding second switching plate.

[0009] Furthermore, it also includes a mounting plate, a U-shaped plate, a return spring, an arc-shaped plate, and a pushing assembly; the mounting housing is bolted to several mounting plates; each mounting plate is slidably connected to several U-shaped plates; each U-shaped plate is fixedly connected to a return spring, and each return spring is fixedly connected to a corresponding mounting plate; each U-shaped plate is fixedly connected to an arc-shaped plate for locking the adjusting rod, and each arc-shaped plate is aligned with a corresponding adjusting rod; the mounting housing is connected to a pushing assembly for pushing the arc-shaped plates to move, and the pushing assembly is connected to all U-shaped plates.

[0010] Furthermore, the pushing assembly includes a third electric push rod, a pushing frame, a first wedge block, and a second wedge block; the mounting shell is bolted to a plurality of third electric push rods; the telescopic portions of all the third electric push rods are bolted to the pushing frame; the pushing frame is fixedly connected to a plurality of first wedge blocks; each U-shaped plate is fixedly connected to a second wedge block, and each second wedge block is in contact with a corresponding first wedge block.

[0011] Furthermore, each of the adjusting rods is provided with a circular tooth locking pad; each of the arc-shaped plates is provided with an arc-shaped tooth locking pad.

[0012] Beneficial effects: 1. Through the setting of the adjusting rod and the first elastic element, each adjusting rod has the ability to independently make fine adjustments up and down under the elastic action of the first elastic element, so as to realize the adaptive adjustment of the height difference of the bottom of the workpiece, to ensure that the workpiece obtains stable and uniform support in the initial placement stage, so that the fixture can clamp the workpiece more accurately and reliably, to avoid horizontal displacement caused by uneven contact surface between the workpiece and the worktable, to eliminate the local support imbalance caused by this, to ensure stable clamping effect, and thus reduce the problems of workpiece loosening and increased vibration during processing.

[0013] 2. By adding a first switching plate, a second switching plate, a second elastic element, and first and second limiting components, and by setting the first elastic element as a high-stiffness heavy-duty spring and the second elastic element as a low-stiffness light-duty spring, the support stiffness can be switched on demand. This allows the heavy-duty branch to be activated under heavy workpiece conditions and the light-duty branch to be activated under light workpiece conditions. This effectively avoids problems such as light workpiece support suspension or heavy workpiece over-compression instability caused by the single stiffness of the first elastic element. It significantly improves workpiece placement stability, clamping repeatability accuracy and processing reliability, while taking into account system safety and working condition adaptability. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a horizontal milling and boring machining center with an anti-offset structure; Figure 2 A structural diagram of the worktable, mounting housing, and adjusting rod; Figure 3 This is a schematic diagram of the internal structure of the mounting shell; Figure 4 This is a schematic diagram of the structure of the first limiting component and the second limiting component; Figure 5 This is a structural schematic diagram of the first elastic element, the first switching plate, the second switching plate, and the second elastic element; Figure 6 A structural diagram of the mounting plate and the push assembly; Figure 7This is a structural diagram of the U-shaped plate, the return spring, and the arc plate.

[0015] In the diagram: 1-Machining center body; 2-Worktable; 3-Mounting shell; 4-Adjusting rod; 5-First elastic element; 111-First switching plate; 112-Second switching plate; 113-Second elastic element; 121-First mounting frame; 122-First electric push rod; 123-First support plate; 131-Second mounting frame; 132-Second electric push rod; 133-Second support plate; 211-Mounting plate; 212-U-shaped plate; 213-Reset spring; 214-Arc-shaped plate; 221-Third electric push rod; 222-Push frame; 223-First wedge block; 224-Second wedge block; 401-Circular tooth locking pad; 21401-Arc-shaped tooth locking pad. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Example 1:

[0018] A horizontal milling and boring machining center with an anti-offset structure, such as Figures 1-7 As shown, it includes a machining center body 1 and a worktable 2; the machining center body 1 is equipped with the worktable 2; It also includes a mounting shell 3, an adjusting rod 4, and a first elastic element 5; the worktable 2 is detachably connected to the mounting shell 3; the mounting shell 3 is connected to several adjusting rods 4; each adjusting rod 4 is fixedly connected to a first elastic element 5, and each first elastic element 5 is connected to the mounting shell 3.

[0019] During workpiece processing, the operator first places the workpiece on all the adjusting rods 4. When there is a local protrusion on the bottom surface of the workpiece, the corresponding adjusting rod 4 and the first elastic element 5 will bear most of the weight of the workpiece, causing the first elastic element 5 at that point to be compressed and the adjusting rod 4 to sink accordingly. Meanwhile, the adjusting rods 4 at other positions maintain their original height, thereby maintaining the overall horizontal posture of the workpiece. This local adaptive and overall coordinated support mechanism enables the workpiece to achieve stable and uniform support in the initial placement stage, effectively avoiding horizontal displacement caused by uneven contact surfaces.

[0020] Subsequently, the operator installs the fixture on the worktable 2 and applies clamping force to the side of the workpiece. Thanks to the preliminary positioning and leveling completed by the adjusting rod 4 and the first elastic element 5, the fixture can clamp the workpiece more accurately and reliably, significantly improving clamping stability. This makes it less likely for the workpiece to loosen or vibrate during the entire processing, thereby ensuring the machining accuracy of the workpiece, reducing the risk of tool wear, and effectively preventing safety accidents caused by clamping failure.

[0021] Thus, through the setting of the adjusting rod 4 and the first elastic element 5, each adjusting rod 4 has the ability to independently make fine adjustments up and down under the elastic action of the first elastic element 5, realizing adaptive adjustment of the height difference of the bottom of the workpiece, so as to ensure that the workpiece obtains stable and uniform support in the initial placement stage, so that the fixture can clamp the workpiece more accurately and reliably, thereby avoiding horizontal displacement caused by uneven contact surface between the workpiece and the worktable 2, eliminating the local support imbalance caused by this, ensuring stable clamping effect, and reducing the problems of workpiece loosening and increased vibration during processing.

[0022] It also includes a first switching plate 111, a second switching plate 112, a second elastic element 113, a first limiting component, and a second limiting component; the mounting shell 3 is slidably connected to a first switching plate 111 matching the number of adjusting rods 4, and each first switching plate 111 is slidably connected to a corresponding adjusting rod 4, and each first switching plate 111 is fixedly connected to a corresponding first elastic element 5; the mounting shell 3 is slidably connected to a second switching plate 112 matching the number of adjusting rods 4, and each second switching plate 112 is slidably connected to a corresponding adjusting rod 4; each second switching plate 112 is fixedly connected to a second elastic element 113, and each second elastic element 113 is fixedly connected to a corresponding adjusting rod 4; the mounting shell 3 is connected to a first limiting component, and the first limiting component is connected to all first switching plates 111; the mounting shell 3 is connected to a second limiting component, and the second limiting component is connected to all second switching plates 112; the first elastic element 5 is set as a heavy-load spring, and the second elastic element 113 is set as a light-load spring.

[0023] The first limiting assembly includes a first mounting bracket 121, a first electric push rod 122, and a first support plate 123; the mounting housing 3 is slidably connected to the first mounting bracket 121; the mounting housing 3 is bolted to two first electric push rods 122 distributed front and rear, and the telescopic part of each first electric push rod 122 is bolted to the first mounting bracket 121; the first mounting bracket 121 is bolted to a plurality of first support plates 123 for supporting the first switching plate 111, and each first support plate 123 is in contact with the corresponding first switching plate 111.

[0024] The second limiting assembly includes a second mounting bracket 131, a second electric push rod 132, and a second support plate 133; the mounting housing 3 is slidably connected to the second mounting bracket 131; the mounting housing 3 is bolted to two second electric push rods 132 distributed front and rear, and the telescopic parts of the second electric push rods 132 are all bolted to the second mounting bracket 131; the second mounting bracket 131 is bolted to a plurality of second support plates 133 for supporting the second switching plate 112, and each second support plate 133 is in contact with the corresponding second switching plate 112.

[0025] Considering that the weight difference of workpieces is large in actual processing, if the stiffness of the first elastic element 5 is large, it can support the heavy workpiece and prevent it from shifting horizontally. However, the light workpiece is not heavy enough to compress the first elastic element 5. This results in the adjustment rod 4 corresponding to a local protrusion on the bottom surface of the light workpiece not sinking. The other adjustment rods 4 are difficult to fit against the bottom surface of the workpiece, causing the support point of the light workpiece to be suspended. The light workpiece is unstable and affects the clamping accuracy. Conversely, if the stiffness of the first elastic element 5 is small, although it can be adapted to the light workpiece, when bearing the heavy workpiece, all the first elastic elements 5 will be over-compressed, causing the adjustment rods 4 to sink significantly or even contact the bottom of the mounting shell 3. In this case, the adjustment rods 4 and the first elastic element 5 are difficult to level the heavy workpiece, causing the heavy workpiece to still shift horizontally.

[0026] Therefore, a first switching plate 111, a second switching plate 112, a second elastic element 113, a first limiting assembly, and a second limiting assembly are added, and the first elastic element 5 is configured as a high-stiffness heavy-duty spring, and the second elastic element 113 is configured as a low-stiffness light-duty spring.

[0027] When the operator needs to clamp heavy workpieces, first control the extension part of the second electric push rod 132 to extend, so that the second electric push rod 132 pushes the second support plate 133 to the right through the second mounting bracket 131, so that the second support plate 133 is disengaged from the second switching plate 112, thereby releasing the restriction on the second switching plate 112. At this time, the second switching plate 112 can slide freely in the mounting shell 3, while the first switching plate 111 is still restricted by the first support plate 123 and remains fixed.

[0028] Subsequently, the heavy workpiece is placed on all the adjusting rods 4. At this time, under the action of the workpiece's gravity, the adjusting rods 4 and the first elastic element 5 can sink along the first limiting switching plate 111, compressing the first elastic element 5. Therefore, stable support and posture leveling of the heavy workpiece can be achieved. Furthermore, when the adjusting rods 4 sink downwards, since the second switching plate 112 is not limited by the second support plate 133, the second switching plate 112 and the second elastic element 113 will sink together under the drive of the adjusting rods 4. Therefore, the second elastic element 113 does not participate in bearing the load, and there will be no overload failure.

[0029] When the operator needs to clamp a light workpiece, first control the extension part of the first electric push rod 122 to extend, so that the first electric push rod 122 pushes the first support plate 123 to the right through the first mounting bracket 121, so that the first support plate 123 is disengaged from the first switching plate 111, thereby releasing the restriction on the first switching plate 111. At this time, the first switching plate 111 can slide freely in the mounting shell 3, while the second switching plate 112 is still restricted by the second support plate 133 and remains fixed.

[0030] Subsequently, the light workpiece is placed on all the adjusting rods 4. At this time, under the action of the workpiece's gravity, the adjusting rods 4 and the first elastic element 5 can sink along the limited second switching plate 112, stretching the second elastic element 113. Therefore, stable support and posture leveling of the light workpiece can be achieved. Furthermore, when the adjusting rods 4 sink, since the first switching plate 111 is not limited by the first support plate, the first switching plate 111 and the first elastic element 5 will sink together under the drive of the adjusting rods 4. Therefore, the first elastic element 5 does not participate in bearing the load, and there will be no overload failure.

[0031] By adding a first switching plate 111, a second switching plate 112, a second elastic element 113, and first and second limiting components, and by setting the first elastic element 5 as a high-stiffness heavy-duty spring and the second elastic element 113 as a low-stiffness light-duty spring, the support stiffness can be switched on demand. This allows the heavy-duty branch to be activated under heavy workpiece conditions and the light-duty branch to be activated under light workpiece conditions. This effectively avoids problems such as light workpiece support suspension or heavy workpiece over-compression instability caused by the single stiffness of the first elastic element 5. It significantly improves workpiece placement stability, clamping repeatability accuracy, and processing reliability, while also taking into account system safety and working condition adaptability.

[0032] It also includes a mounting plate 211, a U-shaped plate 212, a return spring 213, an arc-shaped plate 214, and a pushing assembly; the mounting shell 3 is bolted to several mounting plates 211; each mounting plate 211 is slidably connected to several U-shaped plates 212; each U-shaped plate 212 is fixedly connected to a return spring 213, and each return spring 213 is fixedly connected to the corresponding mounting plate 211; each U-shaped plate 212 is fixedly connected to an arc-shaped plate 214, and each arc-shaped plate 214 is aligned with the corresponding adjusting rod 4; the mounting shell 3 is connected to a pushing assembly, and the pushing assembly is connected to all U-shaped plates 212.

[0033] The pushing assembly includes a third electric push rod 221, a pushing frame 222, a first wedge block 223, and a second wedge block 224; four rectangularly distributed third electric push rods 221 are bolted to the mounting housing 3; the telescopic parts of all the third electric push rods 221 are bolted to the pushing frame 222; the pushing frame 222 is fixedly connected to a plurality of first wedge blocks 223; each U-shaped plate 212 is fixedly connected to a second wedge block 224 for cooperating with the first wedge block 223, and each second wedge block 224 is in contact with the corresponding first wedge block 223.

[0034] Each adjusting rod 4 is provided with a circular tooth locking pad 401; each arc plate 214 is provided with an arc tooth locking pad 21401. The circular tooth locking pad 401 and the arc tooth locking pad 21401 cooperate to make the adjusting rod 4 more stably locked laterally.

[0035] In actual machining, in addition to applying clamping force to the side of the workpiece, the fixture usually needs to apply downward pressure to the upper part of the fixture in order to further improve the stability of the workpiece during the machining process and prevent vibration or fretting.

[0036] To this end, an installation plate 211, a U-shaped plate 212, a return spring 213, an arc-shaped plate 214, and a pushing assembly are added. Before the fixture applies downward pressure to the upper part of the workpiece, the telescopic part of the third electric push rod 221 is first controlled to retract, so that the third electric push rod 221 drives the first wedge block 223 to move downward through the push frame 222. The first wedge block 223 cooperates with the second wedge block 224 to convert the vertical movement into a horizontal thrust, thereby pushing the U-shaped plate 212 to slide along the installation plate 211 towards the adjusting rod 4 and compressing the return spring 213, so that the arc-shaped plate 214 is tightly attached to the outer circumference of the adjusting rod 4 under the push of the U-shaped plate 212, thereby achieving lateral locking of the adjusting rod 4.

[0037] During the process of the fixture applying downward pressure to the upper part of the workpiece, the adjusting rod 4 is horizontally locked under the action of the arc plate 214 and cannot be offset, rotated or shaken in the vertical or horizontal direction. This allows the clamping force to be stably transmitted to the workpiece support point through the adjusting rod 4, ensuring that the workpiece always maintains the preset posture during processing and avoiding clamping position deviation caused by loose support structure.

[0038] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A horizontal milling and boring machining center with an anti-offset structure, comprising a machining center body (1) and a worktable (2); the machining center body (1) is equipped with the worktable (2); characterized in that: It also includes a mounting shell (3), an adjusting rod (4) and a first elastic element (5); the worktable (2) is detachably connected to the mounting shell (3); the mounting shell (3) is connected to a plurality of adjusting rods (4); each of the adjusting rods (4) is fixedly connected to a first elastic element (5) that cooperates with it to prevent workpiece displacement, and each of the first elastic elements (5) is connected to the mounting shell (3).

2. A horizontal milling and boring machining center with an anti-offset structure according to claim 1, characterized in that: It also includes a first switching plate (111), a second switching plate (112), a second elastic element (113), a first limiting component, and a second limiting component; the mounting shell (3) is slidably connected with a first switching plate (111) matching the number of adjusting rods (4), and each first switching plate (111) is slidably connected to a corresponding adjusting rod (4), and each first switching plate (111) is fixedly connected to a corresponding first elastic element (5); the mounting shell (3) is slidably connected with a second switching plate (112) matching the number of adjusting rods (4), and each second switching plate (112) is slidably connected to a corresponding adjusting rod (4); Each of the second switching plates (112) is fixedly connected to a second elastic element (113), and each of the second elastic elements (113) is fixedly connected to a corresponding adjusting rod (4); the mounting shell (3) is connected to a first limiting component for supporting the first switching plate (111), and the first limiting component is connected to all the first switching plates (111); the mounting shell (3) is connected to a second limiting component for supporting the second switching plate (112), and the second limiting component is connected to all the second switching plates (112); the first elastic element (5) is set as a heavy-duty spring, and the second elastic element (113) is set as a light-duty spring.

3. A horizontal milling and boring machining center with an anti-offset structure according to claim 2, characterized in that: The first limiting component includes a first mounting bracket (121), a first electric push rod (122), and a first support plate (123); the mounting shell (3) is slidably connected to the first mounting bracket (121); the mounting shell (3) is bolted to at least one first electric push rod (122), and the telescopic part of the first electric push rod (122) is bolted to the first mounting bracket (121); the first mounting bracket (121) is bolted to a plurality of first support plates (123), and each first support plate (123) is in contact with a corresponding first switching plate (111).

4. A horizontal milling and boring machining center with an anti-offset structure according to claim 3, characterized in that: The second limiting component includes a second mounting bracket (131), a second electric push rod (132), and a second support plate (133); the mounting shell (3) is slidably connected to the second mounting bracket (131); the mounting shell (3) is bolted to at least one second electric push rod (132), and the telescopic part of the second electric push rod (132) is bolted to the second mounting bracket (131); the second mounting bracket (131) is bolted to a plurality of second support plates (133), and each second support plate (133) is in contact with a corresponding second switching plate (112).

5. A horizontal milling and boring machining center with an anti-offset structure according to claim 1, characterized in that: It also includes a mounting plate (211), a U-shaped plate (212), a return spring (213), an arc plate (214), and a pushing assembly; the mounting shell (3) is bolted to a plurality of mounting plates (211); each mounting plate (211) is slidably connected to a plurality of U-shaped plates (212); each U-shaped plate (212) is fixedly connected to a return spring (213), and each return spring (213) is fixedly connected to the corresponding mounting plate (211); each U-shaped plate (212) is fixedly connected to an arc plate (214) for locking the adjusting rod (4), and each arc plate (214) is aligned with the corresponding adjusting rod (4); the mounting shell (3) is connected to a pushing assembly for pushing the arc plate (214) to move, and the pushing assembly is connected to all U-shaped plates (212).

6. A horizontal milling and boring machining center with an anti-offset structure according to claim 5, characterized in that: The pushing assembly includes a third electric push rod (221), a pushing frame (222), a first wedge block (223), and a second wedge block (224); the mounting shell (3) is bolted to a plurality of third electric push rods (221); the telescopic parts of all the third electric push rods (221) are bolted to the pushing frame (222); the pushing frame (222) is fixedly connected to a plurality of first wedge blocks (223); each of the U-shaped plates (212) is fixedly connected to a second wedge block (224), and each second wedge block (224) is in contact with the corresponding first wedge block (223).

7. A horizontal milling and boring machining center with an anti-offset structure according to claim 6, characterized in that: Each of the adjusting rods (4) is provided with a circular tooth locking pad (401); each of the arc plates (214) is provided with an arc tooth locking pad (21401).

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