A machine tool drilling workpiece fixture

Abstract

The present application discloses a machine tool drilling workpiece fixture, including a base plate and two clamping assemblies, the base plate has a horizontal slide rail, and the two clamping assemblies can slide along the horizontal slide rail; the clamping assembly includes a support unit, a pressing unit and an end limit unit, the support unit has a V-shaped receiving groove for supporting the workpiece, the pressing unit includes a flexible belt for applying pressure to the workpiece, and the end limit unit is used to abut the end of the workpiece. The base plate of the workpiece fixture of the present application can be installed on the workbench of the drilling machine, so that the workpiece fixture of the present application has a high degree of matching with the use of the drilling machine of the prior art, is applicable to a wide range of machine tool models, can be installed and disassembled, and is more flexible to use. In addition, the workpiece fixture of the present application is convenient to install the workpiece, and is particularly suitable for tubular workpieces. The installed workpiece can be positioned and tested by the detection unit, and the positioning test does not require excessive human intervention and can be performed automatically, thereby more conveniently realizing the drilling of tubular workpieces.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool drilling, and more specifically to a machine tool drilling workpiece fixture. Background Art

[0002] Drilling refers to the operation of using a drill to make a hole in a workpiece. Some workpieces need to be drilled on a machine tool. When drilling a workpiece on a machine tool, in order to ensure the accuracy of the processing, the workpiece needs to be positioned to ensure that the position of the workpiece is fixed. Usually, a fixture is used to clamp the workpiece.

[0003] When processing a tubular workpiece, an existing drilling machine needs to be equipped with a corresponding tubular fixture, which is usually a claw-shaped fixture that clamps the workpiece from both ends. The cost of this fixture is relatively high. When the number of workpieces processed in the same batch is not particularly large, the installation cost of the specially installed fixture is relatively high. And when the drilling machine is subsequently used to process other types of workpieces, the fixture needs to be disassembled, which is inconvenient to disassemble. In addition, the drilling of a tubular workpiece requires that the axis of the hole to be drilled intersects with the axis of the tubular workpiece, that is, the drilling needs to be performed at the highest position of the tubular workpiece. However, after the existing fixture clamps the tubular workpiece, the positioning of the workpiece, as well as the positioning of the drill bit and the workpiece also have problems of difficulty in positioning or complex operation. Summary of the invention

[0004] The invention aims to overcome the defects of the prior art and provides a machine tool drilling workpiece fixture.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a machine tool drilling workpiece fixture, comprising a base plate and two clamping assemblies, wherein the base plate has a horizontal slide rail, and the two clamping assemblies can slide along the horizontal slide rail; the clamping assembly comprises a supporting unit, a pressing unit and an end limiting unit, wherein the supporting unit has a V-shaped receiving groove for supporting the workpiece, the pressing unit comprises a flexible belt for applying pressure to the workpiece, and the end limiting unit is used to abut the end of the workpiece.

[0006] Furthermore, the workpiece is a circular tubular workpiece.

[0007] In some embodiments, the support unit includes a first slide and a support plate connected to the first slide, and the support plate has the V-shaped receiving groove; the pressing unit includes a second slide and two columns fixed to the second slide, the top of the column is equipped with a first motor, and the second slide is equipped with two first bearings, and the corresponding first motor and first bearing are connected with a first screw rod, and the column has a first vertical slide rail and a second vertical slide rail, and the column is equipped with a pressing seat, and the pressing seat has a slide groove matching the first vertical slide rail and a first threaded hole matching the first screw rod; both ends of the flexible belt are connected to sliding blocks that can slide along the second vertical slide rail, and the pressing seat can abut against the sliding block and drive the sliding block to move downward; the end limiting unit includes a third slide and an end plate fixedly connected to the third slide; the first slide has a first locking bolt, and the second slide has a second locking bolt.

[0008] The clamping assembly can thereby slide along the horizontal slide rail.

[0009] In some embodiments, the two columns of the pressing unit are respectively a first column and a second column, and the length of the second vertical slide rail at the first column is less than two-thirds of the length of the second vertical slide rail at the second column.

[0010] Therefore, the sliding block at the first column can be more conveniently taken out from the second vertical slide rail, thereby facilitating the installation of the circular tubular workpiece.

[0011] In some embodiments, the pressing seat includes a seat body and two pressing blocks connected to the seat body.

[0012] Therefore, the two pressing blocks can abut and press down the sliding block from both sides of the sliding block.

[0013] In some embodiments, the second vertical slide rail at the second column extends to the top end of the second column.

[0014] In some embodiments, the top end of the column has a first motor mounting seat, and the first motor is mounted at the first motor mounting seat.

[0015] Therefore, the first motor can be easily installed through the first motor mounting seat.

[0016] In some embodiments, a detection unit is also included, which includes a fourth slide and a mounting vertical plate fixedly connected to the fourth slide, the mounting vertical plate has a strip-shaped through groove, a second motor is installed at the top of the mounting vertical plate, a third vertical slide rail is installed on the side of the strip-shaped through groove, a second bearing is installed at the bottom of the strip-shaped through groove, a second screw rod is installed between the second motor and the second bearing, a lifting block is installed in the strip-shaped through groove, the lifting block can slide along the third vertical slide rail and has a second threaded hole that cooperates with the second screw rod; a laser transmitter is installed at the lifting block of one of the two clamping assemblies, and a light receiver is installed at the lifting block of the other clamping assembly; a protrusion is provided at the middle position of the flexible belt, a channel portion is provided at the protrusion, and a tube portion with open ends is installed at the channel portion; a third locking bolt is provided at the fourth slide.

[0017] In some embodiments, a control panel is installed on the mounting vertical plate of one of the two clamping assemblies, and a control unit, an indicator light, a start button and a touch screen are installed on the control panel. The indicator light, all the first motors and all the second motors are controlled by the control unit.

[0018] The indicator light can thus indicate that the workpiece is clamped correctly, the touch screen can select the downward movement amplitude of the lower pressure seat and other parameter settings according to the model of the workpiece, and the start button can start the clamping operation and the detection operation.

[0019] In other embodiments, the control panel may not be installed at the mounting riser, and a separate control panel may be provided.

[0020] Thereby, the spatial position selectivity of the control panel is better and it is more convenient for personnel to operate, as long as the control unit can realize the control of the above components.

[0021] In some embodiments, the top of the vertical mounting plate has a second motor mounting seat, and the second motor is mounted at the second motor mounting seat.

[0022] Therefore, the second motor can be easily installed through the second motor mounting base.

[0023] In some embodiments, the surface of the protrusion is in an arc shape; the tube is cylindrical and made of stainless steel.

[0024] In some embodiments, the first slide and the fourth slide are fixedly connected by a horizontal limit rod, the second slide is penetrated by the horizontal limit rod and is fixedly connected to the horizontal limit rod, the third slide has a through hole penetrated by the horizontal limit rod, the third slide can slide along the horizontal limit rod, and a spring is connected between the third slide and the fourth slide.

[0025] In some embodiments, two of the horizontal limit rods are connected between the first slide seat and the fourth slide seat; the horizontal limit rod is cylindrical; the first slide seat has two of the first locking bolts, the second slide seat has two of the second locking bolts, and the fourth slide seat has two of the third locking bolts.

[0026] Thus, the first locking bolt is used to lock the relative position between the first slide and the base plate, the second locking bolt is used to lock the relative position between the second slide and the base plate, and the third locking bolt is used to lock the relative position between the fourth slide and the base plate.

[0027] In some embodiments, the end plate has an abutting plane capable of abutting against an end of the workpiece and a guiding curved surface connecting the abutting plane and a top end of the end plate.

[0028] Therefore, when the workpiece is placed in the fixture of the present application, both ends of the workpiece can better cooperate and abut against the two end plates.

[0029] In some embodiments, the substrate has scales and mounting holes.

[0030] This makes it easier to position the clamp in the horizontal direction and adjust the horizontal position of the clamping assembly.

[0031] In some embodiments, the included angle between the two supporting surfaces of the V-shaped receiving groove is between 60-90 degrees.

[0032] This results in better adjustment of the tubular workpiece.

[0033] Beneficial effects:

[0034] 1. The workpiece fixture of the present application has a base plate that can be installed on the workbench of a drilling machine, so that the workpiece fixture of the present application has a high degree of compatibility with the drilling machine of the prior art, is applicable to a wide range of machine tool models, can be installed and disassembled, and is more flexible to use.

[0035] 2. The workpiece fixture of the present application is convenient for installing workpieces and is particularly suitable for circular tubular workpieces. The installed workpiece can be positioned and tested through the detection unit, and the positioning test does not require excessive human intervention and can be performed automatically, thereby more conveniently realizing the drilling process of circular tubular workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram when the workpiece and the flexible belt are not installed;

[0037] Figure 2 for Figure 1 A magnified schematic diagram of the middle A area;

[0038] Figure 3 for Figure 1A magnified schematic diagram of the middle B area;

[0039] Figure 4 A schematic diagram showing the workpiece being supported by two V-shaped receiving grooves;

[0040] Figure 5 This is a schematic diagram after installing the flexible belt;

[0041] Figure 6 Schematic diagram for positioning and fixing the workpiece and performing positioning detection.

[0042] Explanation of the reference numerals: 1 substrate; 11 horizontal slide rail; 12 scale; 13 mounting hole; 2 support unit; 21 first slide; 22 support plate; 3 pressing unit; 31 flexible belt; 311 raised portion; 312 tube; 32 second slide; 33 first column; 331 first vertical slide rail; 332 second vertical slide rail; 34 second column; 35 first motor; 36 first screw rod; 37 pressing seat; 371 seat body; 372 pressing block; 38 sliding block; 4 end limit unit; 41 third slide; 42 end plate; 5 workpiece; 6 detection unit; 61 fourth slide; 62 mounting vertical plate; 621 indicator light; 622 start button; 623 touch screen; 63 second motor; 64 second screw rod; 65 lifting block; 66 laser emitter; 7 horizontal limit rod; 71 spring. DETAILED DESCRIPTION

[0043] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0044] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0045] The present invention provides Figure 1-6A machine tool drilling workpiece fixture shown includes a base plate 1 and two clamping assemblies, wherein the base plate 1 has a horizontal slide rail 11, and the two clamping assemblies can slide along the horizontal slide rail 11; the clamping assembly includes a supporting unit 2, a pressing unit 3 and an end limiting unit 4, wherein the supporting unit 2 has a V-shaped receiving groove for supporting a workpiece 5, the pressing unit 3 includes a flexible belt 31 for applying pressure to the workpiece 5, and the end limiting unit 4 is used to abut the end of the workpiece 5.

[0046] The support unit 2 includes a first slide 21 and a support plate 22 connected to the first slide 21, and the support plate 22 has the V-shaped receiving groove; the pressing unit 3 includes a second slide 32 and two columns fixed to the second slide 32, a first motor 35 is installed on the top of the column, two first bearings are installed on the second slide 32, and a first screw rod 36 is connected between the corresponding first motor 35 and the first bearing, the column has a first vertical slide rail 331 and a second vertical slide rail 332, and a pressing seat 37 is installed on the column, and the pressing seat 37 has a slide groove matched with the first vertical slide rail 331 and a first threaded hole matched with the first screw rod 36; both ends of the flexible belt 31 are connected It is connected to a sliding block 38 that can slide along the second vertical slide rail 332, and the lower pressure seat 37 can abut against the sliding block 38 and drive the sliding block 38 to move downward; the end limiting unit 4 includes a third slide seat 41 and an end plate 42 fixedly connected to the third slide seat 41; the first slide seat 21 has a first locking bolt, and the second slide seat 32 has a second locking bolt; the two columns of the lower pressure unit 3 are respectively the first column 33 and the second column 34, and the length of the second vertical slide rail 332 at the first column 33 is less than two-thirds of the length of the second vertical slide rail 332 at the second column 34; the lower pressure seat 37 includes a seat body 371 and two lower pressure blocks 372 connected to the seat body 371.

[0047] The fixture also includes a detection unit 6, which includes a fourth slide 61 and a mounting vertical plate 62 fixedly connected to the fourth slide 61, the mounting vertical plate 62 has a strip-shaped through groove, a second motor 63 is installed at the top of the mounting vertical plate 62, a third vertical slide rail is provided on the side of the strip-shaped through groove, a second bearing is installed at the bottom of the strip-shaped through groove, a second screw rod 64 is installed between the second motor 63 and the second bearing, a lifting block 65 is installed in the strip-shaped through groove, the lifting block 65 can slide along the third vertical slide rail and has a second threaded hole that cooperates with the second screw rod 64; a laser emitter 66 is installed at the lifting block 65 of one of the two clamping assemblies, and a laser emitter 66 is installed at the lifting block 65 of the other clamping assemblies. A light receiver is installed at the lifting block 65 of the holding assembly; a raised portion 311 is provided at the middle position of the flexible belt 31, and a channel portion is provided at the raised portion 311, and a tube portion 312 with open ends is installed at the channel portion; a third locking bolt is provided at the fourth slide seat 61; a control panel is installed at the mounting vertical plate 62 of one of the two clamping assemblies, and a control unit, an indicator light 621, a start button 622 and a touch screen 623 are installed on the control panel, and the indicator light 621, all the first motors 35 and all the second motors 63 are controlled by the control unit; the surface of the raised portion 311 is arc-shaped; the tube portion 312 is cylindrical and made of stainless steel.

[0048] The first slide 21 and the fourth slide 61 are fixedly connected by a horizontal limit rod 7, the second slide 32 is passed through by the horizontal limit rod 7 and is fixedly connected to the horizontal limit rod 7, the third slide 41 has a through hole passed through by the horizontal limit rod 7, the third slide 41 can slide along the horizontal limit rod 7, and a spring 71 is connected between the third slide 41 and the fourth slide 61; two horizontal limit rods 7 are connected between the first slide 21 and the fourth slide 61; the horizontal limit rod 7 is cylindrical; the first slide 21 has two first locking bolts, the second slide 32 has two second locking bolts, and the fourth slide 61 has two third locking bolts; the end plate 42 has an abutting plane that can abut the end of the workpiece 5 and a guiding arc surface connecting the abutting plane and the top of the end plate 42; the base plate 1 has a scale 12 and a mounting through hole 13; the angle between the two supporting surfaces of the V-shaped accommodating groove is between 60 and 90 degrees.

[0049] The workpiece fixture of the present application has a base plate that can be installed on a workbench of a drilling machine. The drilling machine can be a drilling machine of the prior art (for example, the workbench of the drilling machine can be translated, or the drill bit itself can be automatically translated, lifted, and drilled, which are common drilling machines of the prior art), so that the workpiece fixture of the present application has a high degree of compatibility with the drilling machine of the prior art. When it is needed, the workpiece fixture of the present application can be used, and when it is not needed, the workpiece fixture of the present application can be removed.

[0050] The specific work is as follows: first, fix the base plate to the workbench of the drilling machine, and then fix the base plate to the workbench after determining the position. Then, according to the length of the workpiece, adjust the horizontal distance between the two clamping components so that when the workpiece is not installed, Figure 1 As shown, the distance between the abutting planes of the end plates of the two clamping assemblies is slightly smaller than the length of the workpiece, but the distance between the top ends of the guiding arc surfaces of the two clamping assemblies is slightly larger than the length of the workpiece, and the positions of the two clamping assemblies relative to the base plate are locked.

[0051] Then as Figure 4 As shown, the workpiece can be put in from the top of the guide arc surface and into the two V-shaped receiving grooves. At this time, the spring will be squeezed. Since the specifications of the springs of the two clamping components are the same, theoretically, the two ends of the workpiece are respectively against the two end plates, and the distance from the midpoint of the workpiece to the two end plates is the same. Figure 5 As shown, put the flexible belt in. Then press the start button, the control unit controls the 4 lower pressure seats to move down synchronously, so as to fix the workpiece (the amplitude of the downward movement is set before according to the specifications of the workpiece). After the fixation is completed, in theory, the tube is located at the midpoint of the flexible belt, and the axes of the two tubes and the axis of the workpiece are coplanar, and the coplanar surface is a vertical surface. Then the second motor drives the laser transmitter and the light receiver to move down. In the process of moving down, the light receiver can receive the light signal at first, and then because the light is blocked by the raised part, the light receiver cannot receive the light signal. Then, due to the continued downward movement, the light passes through the two tubes and can be received again, so that the light goes from being received to not being received to being received again, so that it can be determined that the positions of the two tubes are correct, and thus it can be determined that the clamping of the workpiece is correct. Then move the laser transmitter and light receiver upward again so that the light passes through the two tubes. At this time, the light path is just slightly above the middle position of the workpiece. Then move the drill bit of the drilling machine downward to above the workpiece to see if the tip of the drill bit can cut off the light path. Perform a test. If it can, the drilling operation can be automatically performed. As for the number of holes to be drilled and the spacing of the holes, the drilling machine itself drives the drill bit to achieve this. Equally spaced drilling can be achieved through the machine tool's automatic drilling program.

[0052] After a workpiece is processed, Figure 5As shown, you only need to remove a sliding block to remove the workpiece, then put in a new workpiece, install the sliding block, press the start button, and repeat the above operation. Therefore, the workpiece fixture of the present application is applicable to a wide range of machine tool models, can be installed and disassembled, is flexible to use, and is convenient for installing workpieces. It is particularly suitable for circular tubular workpieces, and can perform positioning tests on the installed workpieces. The positioning test does not require excessive manual intervention and can be performed automatically, thereby more conveniently realizing the drilling of circular tubular workpieces.

[0053] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A machine tool drilling workpiece fixture, characterized in that: It includes a base plate, a detection unit and two clamping assemblies, the base plate has a horizontal slide rail, and the two clamping assemblies can slide along the horizontal slide rail; the clamping assembly includes a supporting unit, a pressing unit and an end limit unit, the supporting unit has a V-shaped receiving groove for supporting the workpiece, the pressing unit includes a flexible belt for applying pressure to the workpiece, and the end limit unit is used to abut the end of the workpiece; the supporting unit includes a first slide and a supporting plate connected to the first slide, and the supporting plate has the V-shaped receiving groove; the pressing unit includes a second slide and two columns fixed to the second slide, a first motor is installed at the top of the column, two first bearings are installed at the second slide, and the corresponding first motor and first bearing The cam is connected to the base by a first screw rod, the first vertical slide rail and the second vertical slide rail being provided at the column, and a lower pressure seat is installed at the column, and the lower pressure seat has a slide groove cooperating with the first vertical slide rail and a first threaded hole cooperating with the first screw rod; both ends of the flexible belt are connected with a sliding block that can slide along the second vertical slide rail, and the lower pressure seat can abut the sliding block and drive the sliding block to move downward; the end limit unit includes a third slide and an end plate fixedly connected to the third slide; the first slide has a first locking bolt, and the second slide has a second locking bolt; the two columns of the lower pressure unit are the first column and the second column, and the length of the second vertical slide rail at the first column is less than the length of the second vertical slide rail at the second column. Two-thirds; the lower pressure seat includes a seat body and two lower pressure blocks connected to the seat body; the detection unit includes a fourth slide and a mounting vertical plate fixedly connected to the fourth slide, the mounting vertical plate has a strip through groove, the top of the mounting vertical plate is provided with a second motor, the side of the strip through groove has a third vertical slide rail, the bottom end of the strip through groove is provided with a second bearing, a second screw rod is installed between the second motor and the second bearing, a lifting block is installed in the strip through groove, the lifting block can slide along the third vertical slide rail and has a second threaded hole that cooperates with the second screw rod; a laser transmitter is installed at the lifting block of one of the two clamping assemblies, and an optical receiver is installed at the lifting block of the other clamping assembly; the middle of the flexible belt The position has a raised portion, the raised portion has a channel portion, and the channel portion is installed with a pipe portion with open ends; the fourth slide has a third locking bolt; a control panel is installed on the mounting vertical plate of one of the two clamping assemblies, and a control unit, an indicator light, a start button and a touch screen are installed on the control panel, and the indicator light, all the first motors and all the second motors are controlled by the control unit; the first slide and the fourth slide are fixedly connected by a horizontal limit rod, the second slide is passed through by the horizontal limit rod and is fixedly connected to the horizontal limit rod, the third slide has a through hole passed through by the horizontal limit rod, the third slide can slide along the horizontal limit rod, and a spring is connected between the third slide and the fourth slide;Two horizontal limit rods are connected between the first slide and the fourth slide; the horizontal limit rod is cylindrical; the first slide has two first locking bolts, the second slide has two second locking bolts, and the fourth slide has two third locking bolts; the surface of the protrusion is in the shape of an arc; the tube is cylindrical and made of stainless steel; the end plate has an abutting plane that can abut the end of the workpiece and a guiding arc surface connecting the abutting plane and the top of the end plate. ; 2. The machine tool drilling workpiece fixture according to claim 1, characterized in that: The substrate is provided with scales and mounting through holes.

3. The machine tool drilling workpiece fixture according to claim 1, characterized in that: The included angle between the two supporting surfaces of the V-shaped receiving groove is between 60 and 90 degrees.

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