A workpiece fixture

Abstract

The present invention relates to the technical field of industrial fixture equipment, and specifically to a workpiece fixture, including a suction cup module, a clamping module, an air blowing module and a mounting platform; a workpiece is mounted on the suction cup module, and the clamping module clamps the workpiece; a camera is arranged above the clamping module to take pictures of the clamped workpiece; an industrial computer controls the clamping module according to the pictures to fine-tune and position the workpiece; a first air source inlet is connected to an air source, and the first air source inlet is connected to the suction cup module to deliver gas to the surface of the workpiece. The present invention ensures that the positioning part is not affected by cutting fluid erosion and chip accumulation, ensures the accuracy of positioning, and at the same time uses a suction cup to fix the workpiece to avoid movement of the workpiece during processing.

Description

Technical Field

[0001] The invention relates to the technical field of industrial fixture equipment, in particular to a workpiece fixture. Background Art

[0002] According to the process requirements of precision machining of composite plates, the copper columns on the plates need to be fine-machined after the workpiece completes the previous process. Existing fixtures often need to remove the workpiece after machining to clean the residual cutting fluid on the workpiece surface, which greatly increases the subsequent processing time and is inefficient. In addition, the cutting fluid also has a certain impact on the workpiece itself. Therefore, how to ensure the isolation of the cutting fluid from the non-machined surface and the reliability of the telescopic mechanism in the cutting fluid spray environment is a difficult problem. Summary of the invention

[0003] Based on this, the purpose of the present invention is to provide a fixture to isolate the cutting fluid from other non-processing surfaces of the workpiece, use three points for positioning, and then use a suction cup to fix the workpiece, install the fixture cover, and clamp it with a cylinder. The fixture cover only exposes the copper column to be processed. During processing, air is blown all around to prevent the cutting fluid from infiltrating from the processing area. The present invention ensures the reliability of the telescopic mechanism in the cutting fluid spraying environment and avoids the corrosion of the workpiece by the cutting fluid.

[0004] The present invention provides a workpiece fixture, comprising a suction cup module, a clamping module, a blowing module and a mounting platform;

[0005] The clamping module and the suction cup module are sequentially installed above the mounting platform; the suction cup module includes a plurality of bosses, the bosses are arranged on the upper surface of the suction cup module, and the workpiece movement limit is located between the bosses;

[0006] The mounting platform includes a base and a support column, and the support column is fixedly arranged above the base;

[0007] The air blowing module is arranged between the suction cup module and the mounting platform, and the air blowing module is connected to the suction cup module and can blow gas toward the periphery of the workpiece.

[0008] In one embodiment, the suction cup module includes a positioning pin, a fixture fixing plate and a fixture template; the fixture fixing plate is arranged above the base through the support column; the fixture template is movably arranged on the upper surface of the fixture fixing plate; a positioning groove is provided on the lower surface of the fixture template; a pin hole is provided on the upper surface of the fixture fixing plate at a position corresponding to the positioning groove, and both ends of the positioning pin are matched with the positioning groove and the pin hole respectively, and are movably arranged in the positioning groove and the pin hole.

[0009] In one embodiment, a vacuum channel is provided in the suction cup module, and the vacuum channel includes a first vacuum channel and a second vacuum channel which are connected in sequence, the inlet end of the first vacuum channel is connected to an external vacuum source, and the outlet end of the second vacuum channel is located on the upper surface of the fixture template; the workpiece is located above the outlet end of the second vacuum channel.

[0010] In one embodiment, the clamping module includes multiple cylinders, cylinder piston rods, pressure blocks, fixture cover plates and a second air source inlet; the cylinder is arranged on the lower surface of the fixture fixing plate, and the cylinder is connected to the pressure block through the cylinder piston rod; the pressure block extends to the top of the fixture template through the fixture fixing plate and the fixture template in turn, and the cylinder drives the pressure block to telescope; the fixture cover plate cooperates with the workpiece, and the second air source inlet is connected to an external air source through an air pipe.

[0011] In one embodiment, a first groove is provided on the side of the fixture fixing plate along its height direction; a second groove is provided on the side of the fixture template along its height direction; the first groove is connected to the second groove to form a pressure block groove, and the pressure block matches the pressure block groove and is arranged in the pressure block groove.

[0012] In one embodiment, the clamp further includes a regulating valve, which is connected to the air flow channel of the cylinder and is used to change the size of the air flow.

[0013] In one embodiment, the fixture template is provided with symmetrical airflow channels, the upper surface of the fixture cover has a plurality of holes, and the airflow channels are connected to the holes.

[0014] In one embodiment, the fixture template further includes an air source connection port, and the air source connection port is inserted into the air flow channel.

[0015] In one embodiment, the blowing module comprises a first air source inlet, and the first air source inlet is connected to the air source connecting port through an air pipe.

[0016] In one embodiment, it also includes a visual positioning module, the visual definition module includes a camera and an industrial computer, the camera is arranged above the clamping module, the industrial computer is arranged outside the workpiece fixture, and the industrial computer is connected to the camera.

[0017] The present invention provides a workpiece clamp, which isolates cutting fluid from other non-processing surfaces of the workpiece, uses three points for positioning, and then uses a suction cup to fix the workpiece. The clamp cover is installed, and the cylinder is telescopically clamped. Only the copper column to be processed is exposed in the clamp cover. During processing, air is blown all around at the same time to prevent the cutting fluid from penetrating from the processing area. The present invention ensures the reliability of the telescopic mechanism in the cutting fluid spraying environment, and avoids the corrosion of the cutting fluid to the workpiece.

[0018] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a clamp according to an embodiment of the present invention;

[0020] Figure 2 A schematic cross-sectional view of some details of a clamp according to an embodiment of the present invention;

[0021] Figure 3 The figure is a schematic diagram of the internal structure of a clamp according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of a fixture according to an embodiment of the present invention. The workpiece fixture comprises a suction cup module 1, a clamping module 2, a blowing module 3 and a mounting platform 4;

[0023] The clamping module 2 and the suction cup module 1 are sequentially mounted above the mounting platform 4; the suction cup module 1 comprises a plurality of bosses 110, the bosses 110 are arranged on the upper surface of the suction cup module 1, and the workpiece movement limit is located between the bosses 110;

[0024] The installation platform includes a support column 5 and a base 6, and the support column 5 is fixedly arranged above the base 6;

[0025] The blowing module 3 is disposed between the suction cup module 1 and the mounting platform 4 . The blowing module 3 is connected to the suction cup module 1 and can blow gas toward the periphery of the workpiece.

[0026] See also Figure 2 , Figure 2 It is a schematic cross-sectional view of some details of a clamp according to an embodiment of the present invention.

[0027] In one embodiment, the suction cup module 1 includes a positioning pin 122, a fixture fixing plate 120 and a fixture template 130; the fixture fixing plate 120 is arranged above the base 6 through the support column 5; the fixture template 130 is movably arranged on the upper surface of the fixture fixing plate 120; a positioning groove 131 is provided on the lower surface of the fixture template 130; a pin hole 123 is provided on the upper surface of the fixture fixing plate 120 corresponding to the position of the positioning groove 131, and the two ends of the positioning pin 122 are matched with the positioning groove 131 and the pin hole 123 respectively, and are movably arranged in the positioning groove 131 and the pin hole 123.

[0028] When installing the fixture fixing plate 120 and the fixture template 130, insert the positioning pin 122 into the pin hole 123, align the positioning groove 131 of the fixture template with the positioning pin 122, and insert the positioning pin 122 into the positioning groove 131. Since the space for storing air is increased above the positioning groove 131, it avoids excessive air pressure caused by too small space when the positioning pin 122 is inserted into the positioning groove 131, and ensures that the end of the positioning pin 122 is smoothly abutted against the inside of the positioning groove 131.

[0029] See also Figure 3 , Figure 3 The figure is a schematic diagram of the internal structure of a clamp according to an embodiment of the present invention.

[0030] In one embodiment, a vacuum channel 140 is provided in the suction cup module 1, and the vacuum channel includes a first vacuum channel 129 and a second vacuum channel 132 which are connected in sequence, the inlet end of the first vacuum channel 129 is connected to an external vacuum source 125, and the outlet end of the second vacuum channel 132 is located on the upper surface of the fixture template 130; the workpiece is located above the outlet end of the second vacuum channel.

[0031] The fixture fixing plate 120 includes a fixing plate body, and the first vacuum channel 129 includes a vacuum connecting port 124 and a vacuum suction port 127; the vacuum connecting port 124 is arranged on the lower surface of the fixing plate body, and is connected to an external vacuum source 125; the vacuum connecting port 124 is connected to one end of the vacuum suction port 127; a plurality of vacuum grooves 126 are provided on the upper surface of the fixing plate body, and the other end of the vacuum suction port 127 is connected to the vacuum grooves 126; a second vacuum channel 132 is provided inside the fixture template 130, and the second vacuum channel 132 penetrates the fixture template 130 along the height direction of the fixture template 130, and one end of the second vacuum channel 132 is connected to the first vacuum channel 129.

[0032] The vacuum source 125 is L-shaped, and the L-shaped vertical part of the vacuum source 125 is inserted into the vacuum connecting port 124 and connected to one end of the vacuum suction port 127; the L-shaped horizontal part of the vacuum source 125 is arranged on the outer surface of the fixture fixing plate 120 and is connected to the vacuum generator (not shown) through an air pipe; the vacuum groove 126 is connected to the vacuum channel 132 to ensure that the vacuum generator (not shown) is connected to the surface of the fixture template 130.

[0033] The vacuum generator (not shown) is started. Since the vacuum source 125 is connected to the vacuum groove 126 through the vacuum suction port 127, and the vacuum groove 126 is connected to the vacuum channel 132, the vacuum generator (not shown) draws the air between the fixture template 130 and the workpiece, so that the workpiece fits tightly with the fixture template 130 under the action of air pressure, and the workpiece is sucked and fixed.

[0034] See also Figure 1 In one embodiment, the clamping module 2 includes a plurality of cylinders 210, cylinder piston rods 220, pressure blocks 230, a fixture cover plate 240 and a second air source inlet 320; the cylinder 230 is arranged on the lower surface of the fixture fixing plate 120, and the cylinder 210 is connected to the pressure block 230 through the cylinder piston rod 220; the pressure block 230 sequentially passes through the fixture fixing plate 120 and the fixture template 130 and extends to the top of the fixture template 130, and the cylinder 210 drives the pressure block 230 to telescopic movement; the fixture cover plate 240 cooperates with the workpiece, and the second air source inlet 320 is connected to an external air source through an air pipe, and the second air source inlet 320 is arranged with a plurality of interfaces, through which the air source (not shown) is connected to the four cylinders 210 through the air pipe to meet the needs of normal operation of the four cylinders 210.

[0035] The cylinder piston rod 220 includes a central support rod 221 in the horizontal direction and a vertical support rod 222 in the vertical direction. The central support rod 221 is arranged at the center position of the cylinder 210, and the vertical support rod 222 is vertically arranged on the central support rod 221. The vertical support rod 222 is horizontally connected to the pressure block 230.

[0036] In the embodiment of the present application, the clamp includes four cylinders 210 and the cylinder piston rods 220 and the pressure blocks 230 equipped therewith.

[0037] Before processing, the cylinder piston rod 220 drives the pressure block 230 to extend, the workpiece is placed on the upper surface of the fixture template 130, and the workpiece is positioned at three points through the three bosses 110 on the fixture template 130. The fixture cover 240 matches the workpiece, and a protrusion 241 is set on the upper surface of the fixture cover 240. The protrusion 241 is provided with a fixture handle plate 242, which is used to install the fixture cover 240 on the workpiece, which is convenient and quick.

[0038] After positioning is completed, the fixture cover 240 is covered on the workpiece, and the fixture cover 240 only exposes the part of the workpiece to be processed, so that the cutting fluid is isolated from other non-processing surfaces of the workpiece, ensuring that the positioning part is not affected by cutting fluid erosion and chip accumulation, thereby ensuring the accuracy of positioning.

[0039] In one embodiment, a first groove 128 is provided on the side of the fixture fixing plate 120 along its height direction; a second groove 133 is provided on the side of the fixture template 130 along its height direction; the first groove 128 is connected to the second groove 133 to form a pressure block groove 260, and the pressure block 230 matches the pressure block groove 260 and is arranged in the pressure block groove 260.

[0040] All the cylinders 210 are started, and the cylinders 210 drive all the pressure blocks 230 to perform forward and backward telescopic movements by driving the cylinder piston rods 220. The pressure blocks 230 are always relatively located at the same horizontal height during the forward and backward telescopic movements. The pressure blocks 230 clamp the installed and connected fixture fixing plates 120 and the fixture templates 130 according to the pressure block grooves 260 that match the pressure blocks 230. Since the support columns 5 are connected to the base 6, it is ensured that the mounting platform 4 will not be disturbed and displaced.

[0041] In one embodiment, the clamp further includes a regulating valve 250 , which is connected to the air flow channel 134 of the cylinder 210 and is used to change the size of the air flow.

[0042] The regulating valve 250 is connected to the air flow channel 134 of the cylinder 210, and the regulating valve 250 is exposed outside the support column 5. The user can adjust the regulating valve 250 exposed outside the support column 5 according to the use requirements, so as to control the air flow in and out speed of the cylinder 210, so as to achieve the effect of controlling the telescopic movement speed of the pressing block 230.

[0043] See also Figure 1 and Figure 3In one embodiment, a symmetrical air flow channel 134 is disposed on the side of the fixture template 130 , and a plurality of holes 135 are disposed on the upper surface of the fixture cover plate 240 , and the air flow channel 134 is connected to the holes 135 .

[0044] In one embodiment, the fixture template 130 further includes a symmetrical air source connection port 136 , and the air source connection port 136 is inserted into the air flow channel 134 .

[0045] In the embodiment of the present application, the air source connection port 136 is provided with threads at its interface, and the air flow channel 134 is provided with internal threads corresponding to the air source connection port 136 interface, and the air source connection port 136 is connected to the air flow channel 134 via threads.

[0046] In one embodiment, the blowing module 3 includes a first air source inlet 310 , and the first air source inlet 310 is connected to the air source connecting port 136 through an air pipe.

[0047] The first gas source inlet 310 is provided with a plurality of interfaces, through which the gas source (not shown) is connected to the first gas source connection port 136 and the second gas source connection port 136 via an air pipe;

[0048] During processing, since the gas source connection port 136 is connected to the hole 135 arranged on the surface of the fixture cover 240 through the air flow channel 134, the gas source (not shown) outputs gas and blows air through the hole 135 to the surrounding areas of the workpiece covered with the fixture cover 240 to prevent cutting fluid from penetrating from the processing area, thereby avoiding the cutting fluid from corroding the workpiece and causing adverse effects.

[0049] In one embodiment, a visual definition module is also included, which includes a camera (not shown) and an industrial computer (not shown). The camera is arranged above the clamping module 2, and the industrial computer is arranged outside the clamp, and the industrial computer is connected to the camera.

[0050] After the workpiece is clamped, the camera takes a picture of the positioned workpiece and transmits the taken picture to the industrial computer. The industrial computer controls the movement of the cylinder 210 according to the picture to fine-tune and position the workpiece.

[0051] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and the present invention is also intended to include these modifications and modifications.

Claims

1. A workpiece fixture, characterized in that: It includes a suction cup module, a clamping module, a blowing module and a mounting platform; The clamping module and the suction cup module are sequentially installed above the mounting platform; the suction cup module includes a plurality of bosses, the bosses are arranged on the upper surface of the suction cup module, and the workpiece movement limit is located between the bosses; The mounting platform includes a base and a support column, and the support column is fixedly arranged above the base; The suction cup module includes a positioning pin, a fixture fixing plate and a fixture template; the fixture fixing plate is arranged above the base through the support column; the fixture template is movably arranged on the upper surface of the fixture fixing plate; a positioning groove is arranged on the lower surface of the fixture template; a pin hole is arranged on the upper surface of the fixture fixing plate at a position corresponding to the positioning groove, and the two ends of the positioning pin are matched with the positioning groove and the pin hole respectively, and are movably arranged in the positioning groove and the pin hole; The clamping module includes a plurality of cylinders, cylinder piston rods, a pressure block, a fixture cover plate and a second air source inlet; the cylinder is arranged on the lower surface of the fixture fixing plate, and the cylinder is connected to the pressure block through the cylinder piston rod; the pressure block sequentially passes through the fixture fixing plate and the fixture template and extends to the top of the fixture template, and the cylinder drives the pressure block to telescopically move; the fixture cover plate cooperates with the workpiece, and the second air source inlet is connected to an external air source through an air pipe; The side surface of the fixture fixing plate is provided with a first groove along its height direction; the side surface of the fixture template is provided with a second groove along its height direction; the first groove is connected with the second groove to form a pressing block groove, and the pressing block matches the pressing block groove and is arranged in the pressing block groove; The air blowing module is disposed between the suction cup module and the mounting platform, and is connected to the suction cup module and can blow gas toward the periphery of the workpiece; The fixture template is provided with symmetrical airflow channels, the upper surface of the fixture cover plate has a plurality of holes, and the airflow channels are connected to the holes; The fixture template also includes an air source connection port, and the air source connection port is inserted into the air flow channel; The air blowing module comprises a first air source inlet, and the first air source inlet is connected to the air source connecting port through an air pipe.

2. A workpiece fixture according to claim 1, characterized in that: A vacuum channel is arranged in the suction cup module, and the vacuum channel includes a first vacuum channel and a second vacuum channel which are connected in sequence, the inlet end of the first vacuum channel is connected to an external vacuum source, and the outlet end of the second vacuum channel is located on the upper surface of the fixture template; the workpiece is located above the outlet end of the second vacuum channel.

3. A workpiece fixture according to claim 1, characterized in that: The clamp further comprises a regulating valve, which is connected to the air flow channel of the cylinder and is used to change the size of the air flow.

4. A workpiece fixture according to claim 1, characterized in that: It also includes a visual positioning module, which includes a camera and an industrial computer. The camera is arranged above the clamping module, and the industrial computer is arranged outside the workpiece fixture, and the industrial computer is connected to the camera.

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