Workbench fixing device and machine tool

Abstract

The utility model discloses a workbench fixing device and a machine tool, the workbench fixing device comprises a lathe bed and a workbench surface located on the lathe bed, the workbench fixing device also comprises an elastic top bead and a jackscrew, the lathe bed comprises a rotary bracket, the rotary bracket comprises a lap joint part partially lapped with the workbench surface in the vertical direction, the lap joint part is provided with a positioning groove, and the positioning groove is provided with a positioning groove. The elastic top bead penetrates through the positioning groove to abut against the working table, the plane where the jackscrew is located is perpendicular to the plane where the positioning groove is located, and the jackscrew is matched with the rotary bracket to abut against the elastic top bead. The elastic jacking beads are additionally arranged on the two sides of the working table, the elastic jacking beads are provided with the internal threads, the screwing-in depth of the internal threads can be adjusted according to needs, and therefore the clamping force is adjusted, and after the working table is subjected to external force and generates displacement, the working table is restored to the position before stress through the elastic force of the elastic jacking beads; therefore, the position of the working table is correct during the next exchange, and the phenomenon of exchange lagging is avoided.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, and in particular to a workbench fixing device and a machine tool. Background Technology

[0002] Exchangeable worktables are commonly used as multi-functional worktables in CNC machine tools. They improve production efficiency, reduce operation time, and enhance the flexibility and accuracy of the work process by enabling rapid exchange and positioning between different axes, thereby increasing product processing efficiency. When an exchangeable worktable is in operation, the workpiece to be processed is placed on the worktable, which then rotates around its rotary seat to the processing position, where the processing mechanism performs the machining. However, in existing exchangeable worktables, slight wobbling may occur after the worktable rotates to the processing position, affecting its stability and consequently impacting machining accuracy and the quality of the processed workpiece. Furthermore, existing technologies leave gaps on both sides of the worktable without fixing it in place. Although these gaps are small, the worktable can still shift under external forces, potentially causing jamming during subsequent exchanges. Summary of the Invention

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to realize a worktable fixing device and machine tool that ensures correct positioning and no jamming during worktable exchange.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A worktable fixing device includes a bed and a worktable surface located on the bed. The worktable fixing device further includes a resilient ball and a set screw. The bed includes a rotary bracket, which includes an overlapping portion that partially overlaps with the worktable surface in the vertical direction. The overlapping portion is provided with a positioning groove. The resilient ball passes through the positioning groove and abuts against the worktable surface. The plane where the set screw is located is perpendicular to the plane where the positioning groove is located. The set screw cooperates with the rotary bracket to abut against the resilient ball.

[0006] Preferably, the elastic ball is threaded to adjust the distance between the side of the worktable and the inner side of the rotary bracket.

[0007] Preferably, the elastic top beads are symmetrically located on both sides of the rotary bracket.

[0008] Preferably, the number of worktables is two.

[0009] Preferably, the number of elastic top beads is multiple.

[0010] Preferably, the number of elastic top beads is 8.

[0011] Preferably, the elastic top bead is made of stainless steel.

[0012] Preferably, the bed further includes a hook block, a linear guide mounting bracket, and a hydraulic cylinder. The hook block is fixedly mounted on the worktable, and the linear guide mounting bracket and the hydraulic cylinder are fixedly mounted on the rotary bracket.

[0013] Preferably, the bed further includes a linear guide slider and a hook plate, the linear guide slider being fixedly mounted on the linear guide mounting bracket, and the hook plate being fixedly mounted on the linear guide slider and connected to the hydraulic cylinder.

[0014] A machine tool, including the aforementioned worktable fixing device.

[0015] Compared with existing technologies, the worktable fixing device and machine tool of this utility model have the following advantages:

[0016] This application relates to a worktable fixing device and machine tool, which incorporates elastic ball bearings on both sides of the worktable surface. These ball bearings have internal threads, allowing adjustment of the thread depth to regulate the clamping force. Firstly, after the worktable surface is displaced by external force, the elastic ball bearings help it return to its pre-force position, ensuring correct positioning during subsequent exchanges and preventing jamming. Secondly, this design ensures uniform gaps on both sides of the worktable surface, preventing collisions. This fixing device offers advantages such as simple installation, convenient adjustment, low cost, and stable and reliable structure. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the workbench fixing device of this application;

[0018] Figure 2 for Figure 1 A schematic diagram of the side view structure;

[0019] Figure 3 for Figure 2 A sectional view of the workbench fixing device;

[0020] Figure 4 for Figure 3 A magnified schematic diagram of a local structure.

[0021] In the diagram: 100, bed; 101, slewing bracket; 1011, positioning groove; 102, hook plate; 103, hook block; 104, hydraulic cylinder; 105, linear guide slider; 106, linear guide mounting bracket; 107, pipe joint; 200, worktable; 300, elastic ball bearing; 400, set screw. Detailed Implementation

[0022] 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.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be fixed through another intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may be fixed through another intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or it may be set through another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Figures 1-4 The present invention provides a workbench fixing device, which includes a bed 100 and a workbench surface 200 located on the bed 100. The workbench surface 200 fixing device also includes an elastic ball 300 and a set screw 400.

[0026] The bed 100 includes a rotary bracket 101, which includes an overlapping portion that overlaps with the worktable 200 in the vertical direction. The overlapping portion is provided with a positioning groove 1011. An elastic ball 300 passes through the positioning groove 1011 and abuts against the worktable 200. The plane of the set screw 400 is perpendicular to the plane of the positioning groove 1011. The set screw 400 cooperates with the rotary bracket 101 to abut against the elastic ball 300.

[0027] Specifically, the elastic ball 300 is threaded, and the depth of the internal thread can be adjusted as needed to adjust the clamping force. The elastic ball 300 not only provides good elasticity, but also ensures the stability of the connection and the adjustment space to adjust the distance between the side of the worktable 200 and the inner side of the rotary bracket 101.

[0028] Specifically, the elastic top ball 300 is symmetrically located on both sides of the rotary bracket 101.

[0029] Specifically, there are two worktables 200. In this embodiment, there are worktable A 200 and worktable B 200.

[0030] Specifically, there are multiple 300 elastic top beads.

[0031] Specifically, there are 8 elastic top beads 300.

[0032] Specifically, the elastic ball 300 is made of stainless steel. The stainless steel elastic ball 300 ensures that it will not lose its elasticity or break due to external forces during long-term use, thereby improving the reliability and stability of the entire equipment or product. It also possesses excellent elastic recovery capability, quickly returning to its original shape and size after being compressed or stretched. This elastic recovery capability allows the elastic ball 300 to maintain stable elastic force during use, ensuring its effective positioning, fixing, or cushioning function during various mechanical movements or assembly processes.

[0033] The bed 100 also includes a hook block 103, a linear guide mounting bracket 106, and a hydraulic cylinder 104. The hook block 103 is fixedly installed on the worktable 200, and the linear guide mounting bracket 106 and the hydraulic cylinder 104 are fixedly installed on the rotary bracket 101.

[0034] The bed 100 also includes a linear guide slider 105 and a hook plate 102. The linear guide slider 105 is fixedly installed on the linear guide mounting bracket 106, and the hook plate 102 is fixedly installed on the linear guide slider 105 and connected to the hydraulic cylinder 104.

[0035] Specifically, there are two sets of hook plate 102, hook block 103, hydraulic cylinder 104, linear guide slider 105, and linear guide mounting bracket 106.

[0036] Specifically, the two sets of hook plates 102, hook blocks 103, hydraulic cylinders 104, linear guide sliders 105, and linear guide mounting brackets 106 are arranged symmetrically about the rotation axis of the rotary bracket 101.

[0037] The bed 100 also includes a pipe joint 107, which connects the cylinders 104 together to ensure smooth liquid transfer between various parts inside the machine.

[0038] A machine tool, including a worktable fixing device.

[0039] In this application, the worktable fixing device utilizes elastic ball bearings 300 added to both sides of the worktable surface 200. These ball bearings 300 have internal threads, allowing adjustment of the thread depth to regulate the clamping force. When the worktable surface 200 is displaced by external force, the elastic ball bearings 300 restore it to its pre-force position, ensuring correct positioning during the next exchange. The worktable surface 200 exchange process is as follows: the hook block 103 is fixed to the worktable surface 200; the hydraulic cylinder 104 and the linear guide mounting bracket 106 are fixed to the rotary bracket 101; the linear guide slider 105 is fixed to the linear guide mounting bracket 106; and the hook plate 102 is fixed to the linear guide slider 105. Simultaneously, the hook plate 102 is connected to the piston rod of the hydraulic cylinder 104 and secured with a locking nut. Before the exchange operation, the piston rod of the hydraulic cylinder 104 extends, driving the hook plate 102. Moving forward, after reaching the position of hook block 103 on the worktable 200, the piston rod of cylinder 104 retracts, hook plate 102 pulls hook block 103, moving the worktable 200 onto the rotary bracket 101. A dedicated exchange mechanism then rotates it 180 degrees. After rotation, worktable A 200 and worktable B 200 exchange positions, achieving the rotational exchange of positions between worktable A 200 and worktable B around the rotation axis of rotary bracket 101. In this application's worktable fixing device and machine tool, elastic top balls 300 are added to both sides of the worktable 200. The elastic top balls 300 themselves have internal threads, and the depth of the internal threads can be adjusted as needed to adjust the clamping force. On the one hand, after the worktable 200 is displaced by external force, the elastic ball 300 can restore the worktable 200 to its previous position, ensuring that the worktable 200 is correctly positioned during the next exchange and preventing jamming. On the other hand, it can ensure uniform gaps on both sides of the worktable 200, avoiding collisions. This fixing device has the advantages of simple installation, convenient adjustment, low cost, and stable and reliable structure.

[0040] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. A workbench fixing device, comprising a bed and a workbench surface located on the bed, characterized in that: The worktable fixing device further includes an elastic ball and a set screw. The bed includes a rotary bracket, which includes an overlapping portion that partially overlaps with the worktable surface in the vertical direction. The overlapping portion is provided with a positioning groove. The elastic ball passes through the positioning groove and abuts against the worktable surface. The plane where the set screw is located is perpendicular to the plane where the positioning groove is located. The set screw cooperates with the rotary bracket to abut against the elastic ball.

2. The workbench fixing device according to claim 1, characterized in that: The elastic top ball is threaded to adjust the distance between the side of the worktable and the inner side of the rotary bracket.

3. The workbench fixing device according to claim 1, characterized in that: The elastic top beads are symmetrically located on both sides of the rotary bracket.

4. The workbench fixing device according to claim 1, characterized in that: The number of worktables is two.

5. The workbench fixing device according to claim 1, characterized in that: The number of elastic top beads is multiple.

6. The workbench fixing device according to claim 5, characterized in that: The number of elastic top beads is 8.

7. The workbench fixing device according to claim 1, characterized in that: The elastic top ball is made of stainless steel.

8. The workbench fixing device according to claim 1, characterized in that: The bed also includes a hook block, a linear guide mounting bracket, and a hydraulic cylinder. The hook block is fixedly installed on the worktable, and the linear guide mounting bracket and the hydraulic cylinder are fixedly installed on the rotary bracket.

9. The workbench fixing device according to claim 8, characterized in that: The bed also includes a linear guide slider and a hook plate. The linear guide slider is fixedly mounted on the linear guide mounting bracket, and the hook plate is fixedly mounted on the linear guide slider and connected to the hydraulic cylinder.

10. A machine tool, characterized in that: Includes the workbench fixing device according to any one of claims 1 to 9.

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