Pneumatic workpiece clamping device of drilling machine

Abstract

The utility model provides a drilling machine workpiece pneumatic clamping device which comprises a base and a pneumatic device arranged on the base, and the pneumatic device is arranged on one side of the base; the pneumatic device is connected with the movable jaw; the fixed jaw is arranged on the other side of the base; a workpiece is fixed between the fixed jaw and the movable jaw; wherein the distance between the movable jaw and the fixed jaw is increased or decreased through the pneumatic device, so that the problem that the position of the movable jaw needs to be frequently and manually adjusted when the conventional flat tongs are used for clamping and loosening a workpiece, so that the operation is tedious is solved.

Description

Technical Field

[0001] This application relates to the field of machining machinery technology, and in particular to a pneumatic clamping device for workpieces on a drilling machine. Background Technology

[0002] In the field of machining, radial drilling machines are important equipment widely used for drilling various metal workpieces. During the drilling process, to ensure accurate and stable workpiece positioning and prevent it from shifting or moving out of the jaws with the drill bit, a vise is usually used to firmly clamp the workpiece. However, with the diversification of production needs, frequent changes of workpieces of different sizes have become the norm, which places higher demands on the ease of operation and durability of the vise.

[0003] Existing flat-jaw pliers mainly consist of fixed jaws, movable jaws, a screw and nut, and a crank handle. Their working principle is based on the screw drive principle; the operator rotates the crank handle, causing the screw to rotate, and the nut to move along the screw's axial direction. This, in turn, pushes the movable jaws closer to or away from the fixed jaws, thus clamping and releasing the workpiece.

[0004] However, in practical applications, especially when changing workpieces of different sizes, the position of the moving jaws needs to be adjusted frequently, which makes the operation cumbersome. Moreover, as the vise is used for a long time, the wear of components such as the screw, nut, and slide rails increases, which further affects the performance of the vise. Utility Model Content

[0005] This application provides a pneumatic clamping device for drilling machine workpieces to solve the technical problem that existing flat-jaw pliers require frequent manual adjustment of the moving jaw position when clamping and releasing workpieces, resulting in cumbersome operation.

[0006] This application provides a pneumatic clamping device for drilling machine workpieces, comprising:

[0007] The base, and the following disposed on the base:

[0008] A pneumatic device is disposed on one side of the base; the pneumatic device is connected to the movable jaw.

[0009] A fixed jaw is provided on the other side of the base; the fixed jaw and the movable jaw are used to fix the workpiece.

[0010] The pneumatic device is used to increase or decrease the distance between the movable jaw and the fixed jaw.

[0011] In some embodiments, the pneumatic device includes:

[0012] A cylinder is connected to a control valve; the control valve is connected to an air intake pipe; a push rod is provided on the side of the cylinder near the fixed jaw; one end of the push rod is connected to the cylinder, and the other end is connected to the movable jaw.

[0013] Specifically, by opening the control valve, the distance between the movable jaw and the fixed jaw can be increased or decreased.

[0014] In some embodiments, the control valve is provided with a first position, a second position, and a third position;

[0015] If the control valve is in the first position, the distance between the movable jaw and the fixed jaw increases;

[0016] If the control valve is in the second position, the distance between the movable jaw and the fixed jaw decreases;

[0017] If the control valve is in the third position, the distance between the movable jaw and the fixed jaw remains unchanged.

[0018] In some embodiments, the pneumatic device further includes:

[0019] A speed regulating device is connected to the air intake pipe and is configured to adjust the air intake volume of the air intake pipe and control the moving speed of the movable jaws.

[0020] In some embodiments, the pneumatic device further includes:

[0021] A pressure gauge connected to the intake pipe, the pressure gauge being configured to display the gas pressure value within the intake pipe;

[0022] An alarm device is connected to the pressure gauge and is configured to emit a warning sound when the gas pressure value exceeds a set pressure value.

[0023] In some embodiments, the pneumatic device further includes:

[0024] A water vapor separator is provided, which is connected to the air inlet pipe and is configured to separate moisture from the gas inside the air inlet pipe.

[0025] In some embodiments, a dovetail groove is provided on the base between the cylinder and the fixed jaw; the movable jaw is slidably connected to the dovetail groove.

[0026] In some embodiments, a telescopic device is provided on the base between the cylinder and the fixed jaw; the telescopic device increases or decreases the length of the base between the cylinder and the fixed jaw.

[0027] In some embodiments, the side of the workpiece that is fixed by the movable jaw and the fixed jaw is provided with anti-slip texture.

[0028] In some embodiments, the cylinder has a thrust of 1000 kg; the push rod has a maximum stroke of 300 mm.

[0029] This application provides a pneumatic workpiece clamping device for a drilling machine, comprising: a base, and a pneumatic device disposed on the base, the pneumatic device being disposed on one side of the base; the pneumatic device being connected to a movable jaw; and a fixed jaw being disposed on the other side of the base; the fixed jaw and the movable jaw are used to fix the workpiece; wherein, the pneumatic device increases or decreases the distance between the movable jaw and the fixed jaw, thereby solving the problem that current flat-jaw vises require frequent manual adjustment of the movable jaw position when clamping and releasing workpieces, resulting in cumbersome operation. Attached Figure Description

[0030] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the pneumatic clamping device for drilling machine workpieces in this application at one angle.

[0032] Figure 2 This is a schematic diagram of the pneumatic clamping device for drilling machine workpieces in this application from another angle.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1-Base; 11-Dovetail groove; 12-Telescopic device; 2-Pneumatic device; 21-Cylinder; 22-Control valve; 23-Inlet pipe; 24-Push rod; 25-Speed ​​regulating device; 26-Pressure gauge; 27-Alarm device; 28-Water vapor separator; 3-Moving jaws; 4-Fixed jaws. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0036] In some technologies, the clamping and releasing of workpieces using a vise requires frequent manual adjustment of the moving jaw position, resulting in cumbersome operation. To solve this technical problem, this application provides a pneumatic clamping device for drilling machine workpieces. The structure of each part of the pneumatic clamping device for drilling machine workpieces is described below:

[0037] like Figure 1 The diagram shown is a structural schematic of the pneumatic clamping device for drilling workpieces in this application at one angle.

[0038] This application provides a pneumatic clamping device for drilling machine workpieces, comprising:

[0039] Base 1, and the following disposed on the base 1:

[0040] A pneumatic device 2 is located on one side of the base 1; the pneumatic device 2 is connected to the movable jaw 3; the pneumatic device 2 uses 0.1 MPa compressed air as the air source, and a 300mm×120mm cylinder 21 as the actuator. The SC standard cylinder parameters are: thrust 1000 kg, maximum stroke 300mm. The air inlet pipe 23 is made of PU material, 10*6.5mm, transparent, and has a bearing pressure of 10-12KG. The control valve 22 is a two-position five-way 4H210-08 pneumatic lever directional valve. The speed control device 25 uses an SL cylinder throttle valve and connects to the pipeline using quick connectors.

[0041] A fixed jaw 4 is disposed on the other side of the base 1; the fixed jaw 4 and the movable jaw 3 are used to fix the workpiece; wherein, the distance between the movable jaw 3 and the fixed jaw 4 is increased or decreased by the pneumatic device 2.

[0042] For example, this application uses a pneumatic device 2 to replace the manual device. By activating the pneumatic device 2, the movable jaw 3 is driven to reciprocate on the base 1, thereby increasing or decreasing the distance between the movable jaw 3 and the fixed jaw 4, thus clamping the workpiece between the movable jaw 3 and the fixed jaw 4.

[0043] This application proposes a pneumatic clamping device for drilling machine workpieces, which improves upon the manual clamping method. In this device, a pneumatic device 2 is used as the core power component, completely replacing the manual device, thereby achieving automated and efficient clamping operation. The pneumatic device 2 serves as the power source for the entire clamping device, receiving compressed air (or other suitable air source) from the air compressor room to provide the necessary driving force for the movement of the movable jaws 3. When the pneumatic device 2 is activated, the compressed air is precisely guided into the cylinder through the intake pipe, thereby driving the piston rod of the cylinder to perform linear reciprocating motion.

[0044] Specifically, the movable jaw 3 is connected to the piston rod of the cylinder via a connecting mechanism. When the cylinder piston rod extends, the movable jaw 3 moves away from the fixed jaw 4, increasing the distance between them. Conversely, when the cylinder piston rod retracts, the movable jaw 3 moves closer to the fixed jaw 4, decreasing the distance between them. This method allows for precise control of the distance between the movable jaw 3 and the fixed jaw 4, enabling flexible clamping of workpieces of different sizes. When clamping a workpiece, simply activate the pneumatic device 2, and the movable jaw 3 will automatically move closer to the fixed jaw 4 until the workpiece is securely clamped. When releasing the workpiece, simply activate the pneumatic device 2 again (or switch its operating state), and the movable jaw 3 will automatically move away from the fixed jaw 4, releasing the workpiece. The entire clamping and releasing process requires no manual intervention, significantly saving operator effort and greatly improving the efficiency and accuracy of drilling operations. In addition, due to the use of a pneumatic device as a power source, this clamping device also has the advantages of simple structure, convenient maintenance and long service life, bringing a more convenient, efficient and reliable clamping solution to drilling operations.

[0045] like Figure 2 The diagram shown is a structural schematic of the pneumatic clamping device for drilling workpieces in this application from another angle.

[0046] In this embodiment, the pneumatic device 2 includes:

[0047] A cylinder 21 is connected to a control valve 22; the control valve 22 is connected to an air intake pipe 23; a push rod 24 is provided on the side of the cylinder 21 near the fixed jaw 4; one end of the push rod 24 is connected to the cylinder 21, and the other end is connected to the movable jaw 3; wherein, by opening the control valve 22, the distance between the movable jaw 3 and the fixed jaw 4 is increased or decreased.

[0048] For example, the control method of the control valve 22 is as follows: The control valve 22, as a control element, is used to switch the air intake direction of the cylinder, thereby realizing the extension and retraction (i.e., back and forth movement) of the cylinder. In this embodiment, the control valve 22 is a two-position five-way manually operated directional valve, which can conveniently switch the air intake direction of the cylinder by operating the handle.

[0049] For example, the reciprocating movement principle of cylinder 21 is as follows: When the control valve 22 is switched to a certain position, compressed air enters one chamber of the cylinder from the intake pipe, pushing the piston to move to another chamber, thereby extending (or clamping) the cylinder. When the control valve 22 is switched to another position, the direction of the compressed air changes, entering another chamber of cylinder 21, pushing the piston to move in the opposite direction, thereby retracting (or releasing) the cylinder.

[0050] In this embodiment, the control valve 22 is provided with a first position, a second position, and a third position. If the control valve 22 is in the first position, the distance between the movable jaw 3 and the fixed jaw 4 increases. If the control valve 22 is in the second position, the distance between the movable jaw 3 and the fixed jaw 4 decreases. If the control valve 22 is in the third position, the distance between the movable jaw 3 and the fixed jaw 4 remains unchanged.

[0051] For example, in the pneumatic workpiece clamping device for drilling machines of this application, the control valve 22, as a key component controlling the movement of the movable jaw 3, is designed with three different positions: a first position, a second position, and a third position. These three positions correspond to different changes in the distance between the movable jaw 3 and the fixed jaw 4. The first position is used to increase the distance between the movable jaw 3 and the fixed jaw 4. When the control valve 22 is switched to the first position, the direction of compressed air flow in the cylinder 21 changes, pushing the cylinder piston rod outward. This action is transmitted to the movable jaw 3 through the connecting mechanism, causing it to move along the base 1 away from the fixed jaw 4. As the movable jaw 3 moves, the distance between it and the fixed jaw 4 gradually increases, providing sufficient space for placing or removing the workpiece.

[0052] The second position is used to reduce the distance between the movable jaw 3 and the fixed jaw 4. When the control valve 22 is switched to the second position, the direction of compressed air flow in the cylinder changes again, pushing the piston rod of cylinder 21 to retract inward. This action is also transmitted to the movable jaw 3 through the connecting mechanism, causing it to move closer to the fixed jaw 4. As the movable jaw 3 moves, the distance between it and the fixed jaw 4 gradually decreases until the workpiece is firmly clamped in the middle.

[0053] The third position is used to maintain a constant distance between the movable jaw 3 and the fixed jaw 4. When the control valve 22 is switched to the third position, the flow of compressed air in the cylinder 21 is blocked or maintained in a balanced state, so that the piston rod of the cylinder 21 neither extends nor retracts. Therefore, the distance between the movable jaw 3 and the fixed jaw 4 remains unchanged, maintaining the current clamping or releasing state.

[0054] In this embodiment, the pneumatic device 2 further includes:

[0055] Speed ​​regulating device 25, which is connected to the air intake pipe 23, is configured to adjust the air intake volume of the air intake pipe 23 and control the moving speed of the movable jaw 3.

[0056] In the pneumatic workpiece clamping device for drilling machines provided in this application, a speed regulating device 25 is added to more precisely control the moving speed of the movable jaw 3. The speed regulating device 25 is connected to the air inlet pipe 23, and the moving speed of the movable jaw 3 is effectively controlled by adjusting the air intake volume of the air inlet pipe 23. The working principle of the speed regulating device 25 is as follows: The speed regulating device 25 typically adopts a throttle valve or similar structure, and has adjustable channels or valves inside. By adjusting the opening degree of these channels or valves, the flow rate of compressed air in the air inlet pipe 23 can be changed. When the air intake volume increases, the pressure inside the cylinder rises, pushing the piston rod faster, thereby increasing the moving speed of the movable jaw 3; conversely, when the air intake volume decreases, the pressure inside the cylinder decreases, pushing the piston rod slower, thereby slowing down the moving speed of the movable jaw 3.

[0057] Specifically, during the use of the pneumatic clamping device for drilling machine workpieces, it is necessary to clamp a workpiece with a large diameter and a hard material. At this time, the operator can rotate the manual knob of the speed regulating device 25 clockwise to reduce the air intake, thereby slowing down the movement speed of the movable jaw 3. As the movable jaw 3 gradually approaches the fixed jaw 4, the operator can gradually observe that the workpiece is steadily clamped in the middle without any slippage or deformation, ensuring the smoothness and accuracy of the clamping process between the movable jaw 3 and the fixed jaw 4.

[0058] In this embodiment, the pneumatic device 2 further includes:

[0059] Pressure gauge 26, connected to the air intake pipe 23, configured to display the gas pressure value in the air intake pipe 23; alarm device 27, connected to the pressure gauge 26, configured to issue a warning sound when the gas pressure value is greater than a set pressure value.

[0060] For example, in the pneumatic workpiece clamping device for drilling machines of this application, a pressure gauge 26 and an alarm device 27 are added to improve the safety and reliability of the device. This allows the operator to monitor the gas pressure value in the air inlet pipe 23 in real time and receive timely warnings when the pressure is abnormal, thereby effectively preventing equipment damage or safety accidents caused by excessive pressure. The pressure gauge 26 is directly installed on the air inlet pipe 23 and is connected to the gas inside the air inlet pipe through a pipeline. Its main function is to display the gas pressure value in the air inlet pipe 23 in real time, providing the operator with intuitive pressure data reference. In practical applications, the operator can judge whether the working status of the pneumatic device 2 is normal by observing the reading of the pressure gauge 26. If the pressure value is within the set range, it indicates that the pneumatic device is operating normally; if the pressure value deviates from the set range, it is necessary to check whether there is air leakage, blockage or other faults in the air inlet pipe 23.

[0061] For example, alarm device 27 is connected to pressure gauge 26 and receives pressure signals from the gauge. Its main function is to automatically issue an alarm when the gas pressure exceeds a set pressure value, reminding the operator to pay attention to the equipment status and take appropriate measures. Alarm device 27 typically uses an audible and visual alarm method, which can quickly attract the operator's attention and ensure timely delivery of warning information.

[0062] In this embodiment, the pneumatic device 2 further includes:

[0063] A water vapor separator 28 is connected to the air inlet pipe 23 and is configured to separate moisture from the gas inside the air inlet pipe 23.

[0064] For example, in the pneumatic clamping device for drilling machine workpieces, the compressed air, as the power source, must be kept clean and dry to avoid the following hazards caused by moisture. Specifically, moisture accelerates oxidation when in contact with metal, leading to corrosion of critical components such as cylinders, piston rods, and connecting parts, thus shortening the equipment's lifespan. Moisture entering the intake pipe 23 can easily cause it to expand, deform, or harden and crack, resulting in airtightness failure, leakage, and pressure fluctuations. If precision components such as the control valve 22 and speed regulating device 25 come into contact with moisture, it may clog the valve core or jam moving parts, causing gear switching malfunction or speed regulation failure. In low-temperature environments, moisture freezing can clog the intake pipe 23, leading to equipment shutdown or even pipe rupture. The water vapor separation device 28 removes liquid water, oil mist, and particulate matter from the compressed air through water vapor separation technology, ensuring the stable operation of the pneumatic device 2.

[0065] In this embodiment, a dovetail groove 11 is provided on the base 1 between the cylinder 21 and the fixed jaw 4; the movable jaw 3 is slidably connected to the dovetail groove 11. To ensure that the movable jaw 3 can reciprocate normally, this application provides a dovetail groove 11 on the base 1 between the cylinder 21 and the fixed jaw 4, so that the movable jaw 3 can reciprocate normally within the dovetail groove 11.

[0066] In this embodiment, a telescopic device 12 is provided on the base 1 between the cylinder 21 and the fixed jaw 4; the telescopic device 12 increases or decreases the length of the base 1 between the cylinder 21 and the fixed jaw 4. It is understood that the telescopic device 12 can adjust the length of the base 1 between the cylinder 21 and the fixed jaw 4, thereby adjusting the distance between the movable jaw 3 and the fixed jaw 4, thus meeting the requirements of workpieces of any size.

[0067] In this embodiment, the side of the movable jaw 3 and the fixed jaw 4 that holds the workpiece is provided with anti-slip texture. The anti-slip texture increases the friction between the movable jaw 3 and the fixed jaw 4 and the workpiece, thereby preventing the workpiece clamped between the movable jaw 3 and the fixed jaw 4 from detaching from the pneumatic clamping device of the drilling machine.

[0068] For example, the thrust of the cylinder 21 is 1000 kg; the maximum stroke of the push rod 24 is 300 mm.

[0069] For example, after the pneumatic clamping device for the drilling machine workpiece is processed, the pressure of the air source (input from the mine pressure blower through the pipeline) is tested. The pressure is 0.1 MPa, which meets the design requirements. The clamping force on the workpiece meets the usage and safety requirements. A pressure gauge 26 and a water vapor separation device 28 are added, and a cylinder piston rod protective sleeve is added. Overall, the design and usage requirements are met.

[0070] This application provides a pneumatic workpiece clamping device for drilling machines, which modifies the manual clamping of flat-jaw pliers to clamping operated by a control valve 22, greatly saving physical labor. Operators can operate upright, reducing the probability of lumbar muscle strain. This device utilizes the existing air supply in the unit's air compressor room, significantly reducing manufacturing and operating costs, and greatly improving production efficiency.

[0071] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A pneumatic workpiece clamping device for a drilling machine, characterized in that include: The base (1), and the following disposed on the base (1): A pneumatic device (2) is disposed on one side of the base (1); the pneumatic device (2) is connected to the movable jaw (3); A fixed jaw (4) is provided on the other side of the base (1); the fixed jaw (4) and the movable jaw (3) are used to fix the workpiece. The distance between the movable jaw (3) and the fixed jaw (4) is increased or decreased by the pneumatic device (2).

2. The apparatus of claim 1 wherein, The pneumatic device (2) includes: A cylinder (21) is connected to a control valve (22); the control valve (22) is connected to an air intake pipe (23); a push rod (24) is provided on the side of the cylinder (21) near the fixed jaw (4); one end of the push rod (24) is connected to the cylinder (21), and the other end is connected to the movable jaw (3); The distance between the movable jaw (3) and the fixed jaw (4) is increased or decreased by opening the control valve (22).

3. A device according to claim 2, wherein, The control valve (22) is provided with a first gear, a second gear, and a third gear; If the control valve (22) is in the first position, the distance between the movable jaw (3) and the fixed jaw (4) increases; If the control valve (22) is in the second position, the distance between the movable jaw (3) and the fixed jaw (4) decreases; If the control valve (22) is in the third position, the distance between the movable jaw (3) and the fixed jaw (4) remains unchanged.

4. The device of claim 2 wherein, The pneumatic device (2) further includes: Speed ​​regulating device (25), which is connected to the air intake pipe (23), is configured to adjust the air intake volume of the air intake pipe (23) and control the moving speed of the movable jaw (3).

5. A pneumatic clamping device for a drilling machine workpiece according to claim 2, characterized in that, The pneumatic device (2) further includes: Pressure gauge (26), the pressure gauge (26) is connected to the air inlet pipe (23), the pressure gauge (26) is configured to display the gas pressure value in the air inlet pipe (23); An alarm device (27) is connected to the pressure gauge (26) and is configured to emit a warning sound when the gas pressure value is greater than a set pressure value.

6. The device of claim 2 wherein, The pneumatic device (2) further includes: A water vapor separator (28) is connected to the air inlet pipe (23) and is configured to separate the moisture in the gas inside the air inlet pipe (23).

7. The device of claim 2 wherein, A dovetail groove (11) is provided on the base (1) between the cylinder (21) and the fixed jaw (4); the movable jaw (3) is slidably connected to the dovetail groove (11).

8. The device of claim 2 wherein, A telescopic device (12) is provided on the base (1) between the cylinder (21) and the fixed jaw (4); the telescopic device (12) can increase or decrease the length of the base (1) between the cylinder (21) and the fixed jaw (4).

9. The apparatus of claim 1 wherein, The movable jaw (3) and the fixed jaw (4) are provided with anti-skid lines on the side of the fixed workpiece.

10. The apparatus of claim 2 wherein, The thrust of the cylinder (21) is 1000 kg; the maximum stroke of the push rod (24) is 300 mm.

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