Machine tool positioning workbench with automatic leveling function

Abstract

The invention relates to the technical field of machine tool machining, and particularly discloses a machine tool positioning workbench with an automatic leveling function, which comprises a mounting seat, a left clamping jaw, a right clamping jaw and a placing table, two ends of the placing table are connected to the top surface of the mounting seat; the top surface of the placing table is connected with a circular truncated cone body, three sliding plates are obliquely and slidably arranged in the placing table, the three sliding plates are uniformly distributed around the circumference of the circular truncated cone body, and sliding grooves for the sliding plates to slide are formed in the circumferential surface of the circular truncated cone body; the top end of the sliding plate is detachably connected with a sector plate, and the circular truncated cone and the sector plate are sleeved with a cavity of the workpiece. A mounting cavity is formed in the mounting base, a first driving mechanism used for driving the sliding plate to slide back and forth along the sliding groove is arranged in the mounting cavity, and a second driving mechanism used for driving the left clamping jaw and the right clamping jaw to be opened and closed is arranged in the mounting cavity. The method has the effect of reducing errors generated by workpiece machining.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool processing, in particular to a machine tool positioning workbench with an automatic leveling function. Background Art

[0002] When machining workpieces on a machine tool, a clamping jaw for clamping the workpiece is provided on the worktable of the machine tool. The most common way to clamp the workpiece is to clamp the workpiece by setting two hydraulically driven left and right clamping jaws on the top surface of the worktable or by setting three hydraulically driven clamping jaws around the workpiece.

[0003] In the related technology, in the processing of the workpiece of the hydraulic cylinder, the hydraulic jaws at the end of the manipulator are extended into the cavity of the workpiece, the hydraulic jaws are opened to clamp the workpiece, and then the workpiece is placed on the top surface of the workbench and is located between the left jaw and the right jaw; when the workpiece is placed on the top surface of the workbench, the axis of the workpiece and the axis of the output shaft of the machine tool driving the tool to rotate are both perpendicular to the top surface of the workbench; the hydraulic system drives the left jaw and the right jaw to clamp the workpiece, and in the process of the left jaw and the right jaw clamping the workpiece, the moments when different jaws contact the workpiece from the horizontal direction are inevitably often in sequence, which will cause the different sides of the part to be subjected to force in sequence, resulting in the workpiece position being prone to slight tilt, and the axis of the workpiece being not perpendicular to the top surface of the workbench, and the workpiece is clamped by the left jaw and the right jaw at this time; there is a deviation between the axis of the workpiece and the axis of the output shaft, resulting in errors in the processed workpiece and unqualified workpiece quality. Summary of the invention

[0004] In order to reduce errors caused by workpiece processing, the present application provides a machine tool positioning workbench with an automatic leveling function.

[0005] The present application provides a machine tool positioning workbench with automatic leveling function, which adopts the following technical solution: The cam body is provided with a plurality of sliding plates, each of which is provided with a plurality of sliding plates, each of which is provided with a plurality of sliding plates, each of which is provided with a plurality of sliding plates, each of which is provided with a plurality of sliding plates.

[0006] Optionally, the first driving mechanism includes a cylinder body, a first piston rod, a first piston head and a push-pull disc; the cylinder body is installed in the mounting cavity, the axis of the cylinder body is colinear with the axis of the truncated cone body, the first piston head slides on the inner wall of the cylinder body, the end of the first piston rod is connected to the top surface of the first piston head, the top of the first piston rod extends out of the top of the cylinder body and the top surface of the mounting seat; the push-pull disc is coaxially connected to the top of the first piston rod, the bottom end of the sliding plate is connected to one end of a limiting block, the other end top surface of the limiting block is fitted with the bottom surface of the push-pull disc, the bottom end of the sliding plate is provided with a notch for the push-pull disc to extend into, and the top surface of the push-pull disc is fitted with the top surface of the notch; the top circumference of the cylinder body is connected to a first oil pipe, and the bottom circumference of the cylinder body is connected to a second oil pipe.

[0007] Optionally, two guide plates symmetrically arranged with respect to the truncated cone body are installed on the top surface of the mounting seat, and the bottom surfaces of the left clamping jaw and the right clamping jaw are connected with trapezoidal sliders. The top surfaces of the two guide plates are respectively provided with trapezoidal grooves for the two trapezoidal sliders to slide, and the trapezoidal grooves pass through both ends of the guide plates; the second driving mechanism is used to drive the trapezoidal sliders to slide in the trapezoidal grooves.

[0008] Optionally, the second driving mechanism includes a push-pull plate, a rotating shaft, a rotating arm and a driving assembly; the push-pull plates are provided with two, the two push-pull plates are respectively connected to the bottom surfaces of the two trapezoidal sliding blocks close to each other at one end, the bottom end of the push-pull plate extends into the mounting cavity, the bottom surface of the trapezoidal groove and the top surface of the mounting seat are provided with a movable groove for the push-pull plate to slide; the rotating shafts are provided with two, the two rotating shafts are fixedly connected to the inner wall of the mounting cavity, and the two rotating shafts are symmetrically arranged about the axis of the truncated table body; the rotating arms are provided with two, the two rotating arms are respectively rotatably connected to the two rotating shafts; the top of the rotating arm is provided with a first rotating opening for the bottom end of the push-pull plate to enter, the two side surfaces of the bottom end of the push-pull plate are connected with first rotating pins, and the side surfaces of the top end of the rotating arm are provided with a first waist-shaped hole for the first rotating pin to rotate; the driving assembly is installed in the mounting cavity, and the driving assembly is used to drive the bottom ends of the two rotating arms to synchronously approach each other or synchronously move away from each other.

[0009] The two cams are connected by a plurality of levers, each of which has a plurality of levers that are respectively connected to the bottom surface of the two movable blocks and the movable block is connected to the lever by a plurality of levers that are connected to the lever.

[0010] Optionally, the slope surfaces at both ends of the pressing block are connected to T-shaped blocks, and the slope surfaces of the two sliding blocks are provided with T-shaped grooves for the two T-shaped blocks to slide.

[0011] Optionally, a sliding rod is slidably disposed at the bottom of each sliding block, the sliding rod passes through the sliding block, and two ends of the sliding rods that are away from each other are connected with bolts, the bolts are threadedly connected to the mounting seat, and the ends of the bolts extend into the mounting cavity.

[0012] Optionally, the driving member includes a second piston head and a second piston rod, the second piston head slides on the inner wall of the cylinder body, the second piston head is located below the first piston head, and the bottom surface of the second piston head is connected to two arc-shaped plates symmetrically arranged about the axis of the second piston head; the second piston rod slides on the bottom of the cylinder body, the bottom end of the second piston rod is connected to the middle position of the top surface of the lower pressure block, and the top circumferential surface of the second piston rod is connected to two symmetrically arranged positioning pins, the inner walls of the two arc-shaped plates are both in contact with the top circumferential surface of the second piston rod, and the two arc-shaped plates are respectively provided with strip grooves for the two positioning pins to slide up and down; a regulating valve for connecting the two sides of the first piston head is provided in the first piston head.

[0013] Optionally, the regulating valves include four regulating valves that are evenly distributed around the circumference of the first piston head; two of the regulating valves are used to transport the hydraulic oil on the side of the first piston head away from the second piston head to the other side of the first piston head, and the two regulating valves are symmetrically arranged; the other two regulating valves are used to transport the hydraulic oil on the side of the first piston head close to the second piston head to the other side of the first piston head, and the two regulating valves are symmetrically arranged.

[0014] Optionally, the regulating valve includes a valve tube, a spring, a sealing plug, a sliding rod and a sealing ring; the sealing plug is threadedly connected to the inner wall of one end of the valve tube, the spring is arranged in the valve tube, one end of the sliding rod slides in the valve tube, the end face of the sliding rod is pressed against one end of the spring, the other end of the spring is pressed against the sealing plug, and the sealing ring is connected to the circumferential surface of the sliding rod; a through hole for inserting the valve tube is arranged in the first piston head, the end face of the sealing plug away from the valve tube is flush with the side face of the first piston head, the end face of the sliding rod away from the spring is flush with the other side face of the first piston head, and the sealing ring is slidably sealed on the inner wall of the through hole; a limiting ring is connected to the inner wall of the end of the through hole away from the sealing plug, and the limiting ring is pressed against the side face of the sealing ring; two flow channels are arranged on the inner wall of the through hole, one end of the flow channel is located at the sealing ring, and the other end of the flow channel is connected to the side face of the first piston head close to the sealing plug; the valve tube is threadedly connected to the inner wall of the through hole.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. The manipulator sets the workpiece outside the truncated table and places it on the top surface of the placing table. At this time, the axis of the workpiece is perpendicular to the placing table, and the axis of the output shaft is also perpendicular to the placing table; the first driving mechanism drives the sliding plate to slide downward along the sliding groove. Since the sliding plate slides at an angle, the top ends of the three sliding plates are away from each other during the downward sliding of the sliding plate, so that the outer peripheral surface of the fan-shaped plate is pressed against the inner peripheral surface of the workpiece cavity. At this time, when the first driving mechanism continues to pull down the sliding plate, the sliding plate pulls down the workpiece through the fan-shaped plate, so that the bottom surface of the workpiece is pressed against the top surface of the placing table, and the axis of the workpiece is still perpendicular to the placing table; then the second driving mechanism drives the left clamp and the right clamp to clamp the workpiece. Since the workpiece is pressed against the top surface of the placing table by the fan-shaped plate, when the left clamp and the right clamp hit the workpiece, the workpiece is not easy to tilt, and the axis of the workpiece is still perpendicular to the placing table, so that the tool can accurately process the workpiece, reducing the error during workpiece production; 2. When the first oil pipe injects hydraulic oil into the cylinder body, the first piston head pushes the second piston head to slide together in the cylinder body, and the positioning pin slides in the strip groove until the fan-shaped plate is pressed against the inner wall of the workpiece cavity. At this time, the first piston head no longer moves; due to the continuous injection of hydraulic oil into the valve body, the oil pressure on the side of the first piston head away from the second piston head increases, and the hydraulic oil pushes the sliding rods of the two regulating valves, and the sliding rods press down the spring in the valve tube until the sealing ring passes over the end of the flow channel. At this time, the flow channel is connected with both sides of the first piston head, and the hydraulic oil gradually enters between the first piston head and the second piston head through the flow channel. The hydraulic oil squeezes the second piston head, and the second piston head pushes the second piston rod again. The second piston rod presses down the lower pressure block, and the other two regulating valves, under the action of the hydraulic oil, make the sealing rings press the limit rings.

[0016] 3. When the second oil pipe injects hydraulic oil into the cylinder body, the hydraulic oil pushes the second piston head, the second piston head leaves the second piston rod, the positioning pin slides in the strip groove, the arc plate pulls the positioning pin, the positioning pin pulls the second piston rod, and the second piston rod pulls the lower pressure block; in the process of the second piston head rising, the second piston head pushes the first piston head through the hydraulic oil until the push-pull disc fits against the bottom surface of the placement table, and the first piston head is restricted. At this time, the second piston head squeezes the hydraulic oil between the first piston head and the second piston head, and the hydraulic oil pushes the sliding rods of the two regulating valves, and the sliding rod presses the spring in the valve tube until the sealing ring passes over the end of the flow channel. At this time, the flow channel is connected with both sides of the first piston head, and the hydraulic oil gradually enters the side of the first piston head away from the second piston head through the flow channel until the first piston head and the second piston head fit together. Under the action of the hydraulic oil, the other two regulating valves cause the sealing rings to press the limit rings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a machine tool positioning workbench according to an embodiment of the present application; Figure 2 is a schematic cross-sectional structure diagram of a mounting base according to an embodiment of the present application; Figure 3 Schematic diagram of the cross-sectional structure of the cylinder body of the embodiment of the present application; Figure 4 is a schematic diagram of the cross-sectional structure of the first piston head and the valve tube in the embodiment of the present application; Figure 5 It is a schematic diagram of the cross-sectional structure of the first piston head of the embodiment of the present application.

[0018] Description of reference numerals: 01. Workpiece; 1. Machine tool base; 2. Mounting seat; 21. Left clamping jaw; 22. Right clamping jaw; 23. Mounting cavity; 24. Guide plate; 241. Trapezoidal groove; 242. Moving groove; 25. Trapezoidal slider; 3. Placement table; 31. Sliding plate; 311. Fan-shaped plate; 312. Notch; 32. Round table body; 321. Sliding groove; 4. First driving mechanism; 41. Cylinder body; 411. First oil pipe; 412. Second oil pipe; 42. First piston rod; 43. First piston head; 431. Through hole; 432. Limiting ring; 433. Flow channel; 44. Push-pull disc; 45. Limiting block; 5. Second driving mechanism; 51. Push-pull plate; 511. First A rotating pin; 52, a rotating shaft; 53, a rotating arm; 531, a first rotating opening; 532, a first waist-shaped hole; 533, a second rotating opening; 534, a second waist-shaped hole; 54, a driving assembly; 541, a sliding block; 5411, a second rotating pin; 5412, a T-shaped slot; 5413, a sliding rod; 5414, a bolt; 542, a pressing block; 5421, a T-shaped block; 543, a driving member; 5431, a second piston head; 5432, a second piston rod; 5433, an arc plate; 5434, a positioning pin; 5435, a strip groove; 6, a regulating valve; 61, a valve tube; 62, a spring; 63, a sealing plug; 64, a sliding rod; 65, a sealing ring. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-5 This application is described in further detail.

[0020] The present application embodiment discloses a machine tool positioning workbench with an automatic leveling function. Figure 1-5 The machine tool positioning workbench includes a mounting seat 2 mounted on the top surface of the machine tool base 1, a left clamping jaw 21 and a right clamping jaw 22 slidably connected to the top surface of the mounting seat 2, and a placing table 3; the placing table 3 is U-shaped, and the two ends of the placing table 3 are connected to the top surface of the mounting seat 2, and the placing table 3 is used to place the workpiece 01; the top surface of the placing table 3 is integrally formed with a truncated table body 32, and three sliding plates 31 are arranged in the placing table 3 for inclined sliding. The three sliding plates 31 are evenly distributed around the circumference of the truncated table body 32, and the top ends of the three sliding plates 31 are inclined toward the truncated table body 32, and the circumferential surface of the truncated table body 32 is provided with sliding for the sliding plates 31 to slide Slot 321; the bottom end of the sliding plate 31 extends out of the bottom surface of the placement table 3, and the top end of the sliding plate 31 extends out of the top surface of the placement table 3; the top end of the sliding plate 31 is detachably connected to a fan-shaped plate 311, and the cavity of the workpiece 01 is sleeved outside the truncated table body 32 and the fan-shaped plate 311, and the outer peripheral surface of the fan-shaped plate 311 faces the inner wall of the cavity of the workpiece 01; an installation cavity 23 is provided in the mounting seat 2, and a first driving mechanism 4 for driving the sliding plate 31 to slide back and forth along the sliding groove 321 is provided in the installation cavity 23, and a second driving mechanism 5 for driving the left clamping jaw 21 and the right clamping jaw 22 to open and close is provided in the installation cavity 23.

[0021] The manipulator sets the workpiece 01 outside the truncated cone body 32 and places it on the top surface of the placement table 3. At this time, the axis of the workpiece 01 is perpendicular to the placement table 3, and the axis of the output shaft is also perpendicular to the placement table 3; the first driving mechanism 4 drives the sliding plate 31 to slide downward along the sliding groove 321. Since the sliding plate 31 slides obliquely, the top ends of the three sliding plates 31 are away from each other during the downward sliding process of the sliding plate 31, so that the outer peripheral surface of the fan-shaped plate 311 is pressed against the inner peripheral surface of the cavity of the workpiece 01. At this time, when the first driving mechanism 4 continues to pull down the sliding plate 31, the sliding plate 31 pulls down the workpiece 01 through the fan-shaped plate 311, so that the bottom surface of the workpiece 01 is pressed against the top surface of the placement table 3. At this time, the axis of the workpiece 01 is still perpendicular to the placement table 3; then the second driving mechanism 5 drives the left clamp 21 and the right clamp 22 to clamp the workpiece 01. Since the workpiece 01 is pressed against the top surface of the placement table 3 by the fan-shaped plate 311, when the left clamp 21 and the right clamp 22 hit the workpiece 01, the workpiece 01 is not easy to tilt, and the axis of the workpiece 01 is still perpendicular to the placement table 3, so that the tool can accurately process the workpiece 01, thereby reducing the error during the production of the workpiece 01.

[0022] When the workpiece 01 needs to be removed, the second driving mechanism 5 drives the left clamp 21 and the right clamp 22 to separate, and the first driving mechanism 4 drives the sliding plate 31 to move upward. The top ends of the three sliding plates 31 approach each other, and the three fan-shaped plates 311 approach each other, releasing the pressure of the fan-shaped plates 311 on the inner wall of the workpiece 01 cavity, and the workpiece 01 can be removed at this time.

[0023] The first driving mechanism 4 includes a cylinder body 41, a first piston rod 42, a first piston head 43 and a push-pull disc 44; the cylinder body 41 is installed in the installation cavity 23, the axis of the cylinder body 41 is colinear with the axis of the truncated cone body 32, the first piston head 43 slides on the inner wall of the cylinder body 41, the end of the first piston rod 42 is connected to the top surface of the first piston head 43, the top end of the first piston rod 42 extends out of the top of the cylinder body 41 and the top surface of the mounting seat 2; the push-pull disc 44 is coaxial with the cylinder body 41. The shaft is connected to the top end of the first piston rod 42, the bottom end of the sliding plate 31 is connected to one end of the limiting block 45, the other end of the limiting block 45 is attached to the bottom surface of the push-pull disc 44, and the bottom end of the sliding plate 31 is provided with a notch 312 for the push-pull disc 44 to extend into, and the top surface of the push-pull disc 44 is attached to the top surface of the notch 312; the top circumference of the cylinder body 41 is connected to the first oil pipe 411, and the bottom circumference of the cylinder body 41 is connected to the second oil pipe 412.

[0024] When it is necessary to drive the sliding plate 31 to descend, hydraulic oil is injected into the cylinder body 41 through the first oil pipe 411, and the hydraulic oil pushes the first piston head 43, and the first piston head 43 moves downward, and the first piston head 43 presses the hydraulic oil at the other end of the cylinder body 41 out from the second oil pipe 412, and the first piston head 43 pulls down the first piston rod 42, and the first piston rod 42 pulls down the push-pull disc 44, and the push-pull disc 44 pulls down the limit block 45, and the limit block 45 pulls down the sliding plate 31; when it is necessary to drive the sliding plate 31 to ascend, the second oil pipe 411 is used to push the first piston head 43, and the first piston rod 42 pulls down the push-pull disc 44, and the push-pull disc 44 pulls down the limit block 45, and the limit block 45 pulls down the sliding plate 31. 12 Hydraulic oil is injected into the cylinder body 41, and the hydraulic oil pushes the first piston head 43, and the first piston head 43 moves upward. The first piston head 43 presses the hydraulic oil at the other end of the cylinder body 41 out from the first oil pipe 411, and the first piston head 43 pushes the first piston rod 42 upward, and the first piston rod 42 pushes the push-pull disc 44 upward, and the push-pull disc 44 pushes the top surface of the notch 312, so that the sliding plate 31 slides upward; during the up and down movement of the push-pull disc 44, the push-pull disc 44 slides on the top surface of the notch 312 and the top surface of the limit block 45.

[0025] Two guide plates 24 symmetrically arranged about the truncated cone body 32 are installed on the top surface of the mounting seat 2, and the bottom surfaces of the left clamping jaw 21 and the right clamping jaw 22 are connected to trapezoidal sliders 25. The top surfaces of the two guide plates 24 are respectively provided with trapezoidal grooves 241 for the two trapezoidal sliders 25 to slide, and the trapezoidal grooves 241 run through both ends of the guide plates 24; the second driving mechanism 5 is used to drive the trapezoidal sliders 25 to slide in the trapezoidal grooves 241.

[0026] The second driving mechanism 5 includes a push-pull plate 51, a rotating shaft 52, a rotating arm 53 and a driving assembly 54; there are two push-pull plates 51, which are respectively connected to the bottom surfaces of the two trapezoidal sliders 25 close to each other, and the bottom ends of the push-pull plates 51 extend into the installation cavity 23. The bottom surface of the trapezoidal groove 241 and the top surface of the mounting seat 2 are provided with a movable groove 242 for the push-pull plate 51 to slide; there are two rotating shafts 52, which are fixedly connected to the inner wall of the installation cavity 23, and the two rotating shafts 52 are symmetrical about the axis of the truncated cone body 32 Setting; two rotating arms 53 are provided, and the two rotating arms 53 are rotatably connected to the two rotating shafts 52 respectively; a first rotating opening 531 for the bottom end of the push-pull plate 51 to enter is provided at the top of the rotating arm 53, and the two side surfaces of the bottom end of the push-pull plate 51 are connected with the first rotating pin 511, and a first waist-shaped hole 532 for the first rotating pin 511 to rotate is provided on the side surface of the top end of the rotating arm 53; a driving component 54 is installed in the installation cavity 23, and the driving component 54 is used to drive the bottom ends of the two rotating arms 53 to synchronously approach each other or synchronously move away from each other.

[0027] When it is necessary to drive the left clamping jaw 21 and the right clamping jaw 22 to clamp the workpiece 01, the driving assembly 54 drives the bottom ends of the two rotating arms 53 to move away from each other, and the rotating arms 53 rotate around the rotating shaft 52 as the center of the circle. The top end of the rotating arm 53 pushes the first rotating pin 511 to approach the truncated cone body 32, and the first rotating pin 511 pulls the push-pull plate 51, and the push-pull plate 51 pulls the trapezoidal slider 25 to slide in the trapezoidal groove 241 toward the truncated cone body 32 until the left clamping jaw 21 and the right clamping jaw 22 clamp the workpiece 01. Clamping; when it is necessary to release the clamping of the workpiece 01, the driving component 54 drives the bottom ends of the two rotating arms 53 to approach each other first, and the rotating arms 53 rotate with the rotating shaft 52 as the center of the circle, and the top of the rotating arm 53 pushes the first rotating pin 511 away from the conical body 32, and the first rotating pin 511 pulls the push-pull plate 51, and the push-pull plate 51 pulls the trapezoidal slider 25 to slide in the trapezoidal groove 241 toward the end away from the conical body 32, thereby releasing the clamping of the left clamp 21 and the right clamp 22 on the workpiece 01.

[0028] The driving assembly 54 includes a sliding block 541, a pressing block 542 and a driving member 543; two sliding blocks 541 are provided, and the two sliding blocks 541 slide on the bottom surface of the installation cavity 23, and the two sliding blocks 541 are symmetrically arranged about the axis of the truncated cone body 32; the sides of the sliding blocks 541 close to each other are sloped, and the slope of the sliding blocks 541 is inclined upward; the pressing block 542 is arranged between the two sliding blocks 541, and the two ends of the pressing block 542 are sloped, and the slope of the pressing block 542 is inclined downward, and the pressing block 54 The two slopes of 2 are respectively fitted to the slopes of the two sliding blocks 541 and are slidably connected to the slopes of the sliding blocks 541; the bottom ends of the two rotating arms 53 are respectively provided with second rotating openings 533 for the two sliding blocks 541 to enter, the two side surfaces of the sliding blocks 541 are connected with second rotating pins 5411, and the side surfaces of the bottom ends of the rotating arms 53 are provided with second waist-shaped holes 534 for the second rotating pins 5411 to rotate; the driving member 543 is installed on the cylinder body 41, and the driving member 543 is used to drive the lower pressing block 542 to rise and fall.

[0029] The slopes at both ends of the pressing block 542 are connected to T-blocks 5421 . The slopes of the two sliding blocks 541 are provided with T-slots 5412 for the two T-blocks 5421 to slide. The T-slots 5412 run through the top and bottom of the sliding block 541 .

[0030] A sliding rod 5413 is sliding at the bottom of each sliding block 541. The sliding rod 5413 is parallel to the bottom surface of the installation cavity 23. The sliding rod 5413 passes through the sliding block 541. The ends of the two sliding rods 5413 that are away from each other are connected with bolts 5414. The bolts 5414 are threadedly connected to the mounting seat 2, and the ends of the bolts 5414 extend into the installation cavity 23.

[0031] When it is necessary to drive the bottom ends of the rotating arms 53 away from each other, the driving member 543 drives the lower pressing block 542 to descend, and the lower pressing block 542 pushes the two sliding blocks 541 away from each other through the slope, the T-block 5421 slides in the T-slot 5412, the sliding block 541 slides along the sliding rod 5413, and the two sliding blocks 541 push the bottom ends of the two rotating arms 53 away from each other through the second rotating pin 5411; when it is necessary to drive the bottom ends of the rotating arms 53 closer to each other, the driving member 543 drives the lower pressing block 542 to rise, and the lower pressing block 542 drives the two sliding blocks 541 closer to each other through the T-block 5421, the T-block 5421 slides in the T-slot 5412, the sliding block 541 slides along the sliding rod 5413, and the two sliding blocks 541 push the bottom ends of the two rotating arms 53 closer to each other through the second rotating pin 5411.

[0032] The driving member 543 includes a second piston head 5431 and a second piston rod 5432. The second piston head 5431 slides on the inner wall of the cylinder body 41. The second piston head 5431 is located below the first piston head 43. The bottom surface of the second piston head 5431 is connected to two arc-shaped plates 5433 symmetrically arranged about the axis of the second piston head 5431; the second piston rod 5432 slides on the bottom of the cylinder body 41, and the bottom end of the second piston rod 5432 is connected to the middle position of the top surface of the lower pressure block 542. The top circumference of the second piston rod 5432 is connected to two symmetrically arranged positioning pins 5434. The inner walls of the two arc-shaped plates 5433 are both in contact with the top circumference of the second piston rod 5432. The two arc-shaped plates 5433 are respectively provided with strip grooves 5435 for the two positioning pins 5434 to slide up and down; the first piston head 43 is provided with a regulating valve 6 for connecting the two sides of the first piston head 43.

[0033] The regulating valves 6 include four regulating valves 6 that are evenly distributed around the circumference of the first piston head 43; two of the regulating valves 6 are used to transport the hydraulic oil on the side of the first piston head 43 away from the second piston head 5431 to the other side of the first piston head 43, and the two regulating valves 6 are symmetrically arranged; the other two regulating valves 6 are used to transport the hydraulic oil on the side of the first piston head 43 close to the second piston head 5431 to the other side of the first piston head 43, and the two regulating valves 6 are symmetrically arranged.

[0034] The regulating valve 6 includes a valve tube 61, a spring 62, a sealing plug 63, a sliding rod 64 and a sealing ring 65; the sealing plug 63 is threadedly connected to the inner wall of one end of the valve tube 61, the spring 62 is arranged in the valve tube 61, one end of the sliding rod 64 slides in the valve tube 61, the end face of the sliding rod 64 is pressed against one end of the spring 62, the other end of the spring 62 is pressed against the sealing plug 63, the sealing ring 65 is connected to the circumference of the sliding rod 64, and the diameter of the sealing ring 65 is equal to the diameter of the valve tube 61; a through hole 431 for inserting the valve tube 61 is arranged in the first piston head 43, and the sealing plug 63 is away from the valve tube 61. The end face is flush with the side of the first piston head 43, the end face of the sliding rod 64 away from the spring 62 is flush with the other side of the first piston head 43, and the sealing ring 65 is slidably sealed on the inner wall of the through hole 431; the inner wall of the end of the through hole 431 away from the sealing plug 63 is connected to the limiting ring 432, and the limiting ring 432 is pressed against the side of the sealing ring 65; two flow channels 433 are provided on the inner wall of the through hole 431, one end of the flow channel 433 is located at the sealing ring 65, and the other end of the flow channel 433 is connected to the side of the first piston head 43 close to the sealing plug 63; the valve tube 61 is threadedly connected to the inner wall of the through hole 431.

[0035] When the first oil pipe 411 injects hydraulic oil into the cylinder body 41, the first piston head 43 pushes the second piston head 5431 to slide together in the cylinder body 41, and the positioning pin 5434 slides in the strip groove 5435 until the fan-shaped plate 311 is pressed against the inner wall of the cavity of the workpiece 01. At this time, the first piston head 43 no longer moves; due to the continuous injection of hydraulic oil into the valve body, the oil pressure on the side of the first piston head 43 away from the second piston head 5431 increases, and the hydraulic oil pushes the sliding rods 64 of the two regulating valves 6, and the sliding rods 64 press the valves down. The spring 62 in the tube 61 continues until the sealing ring 65 passes over the end of the flow channel 433. At this time, the flow channel 433 is connected with both sides of the first piston head 43. The hydraulic oil gradually enters between the first piston head 43 and the second piston head 5431 through the flow channel 433. The hydraulic oil squeezes the second piston head 5431, and the second piston head 5431 pushes the second piston rod 5432. The second piston rod 5432 presses down the pressing block 542. Under the action of the hydraulic oil, the other two regulating valves 6 make the sealing ring 65 press the limit ring 432.

[0036] When the second oil pipe 412 injects hydraulic oil into the cylinder body 41, the hydraulic oil pushes the second piston head 5431, the second piston head 5431 leaves the second piston rod 5432, the positioning pin 5434 slides in the strip groove 5435, the arc plate 5433 pulls the positioning pin 5434, the positioning pin 5434 pulls the second piston rod 5432, and the second piston rod 5432 pulls the pressing block 542; during the rising process of the second piston head 5431, the second piston head 5431 pushes the first piston head 43 through the hydraulic oil until the push-pull disc 44 is attached to the bottom surface of the placement table 3, and the first piston head 43 is restricted. At this time, the second piston head 5431 squeezes the hydraulic oil between the first piston head 43 and the second piston head 5431, and the hydraulic oil pushes the sliding rods 64 of the two regulating valves 6. The sliding rods 64 press the spring 62 in the valve tube 61 until the sealing ring 65 passes over the end of the flow channel 433. At this time, the flow channel 433 is connected with both sides of the first piston head 43, and the hydraulic oil gradually enters the side of the first piston head 43 away from the second piston head 5431 through the flow channel 433 until the first piston head 43 and the second piston head 5431 are fitted together. Under the action of the hydraulic oil, the other two regulating valves 6 cause the sealing ring 65 to press the limit ring 432.

[0037] The implementation principle of a machine tool positioning workbench with an automatic leveling function in the embodiment of the present application is as follows: the manipulator sets the workpiece 01 outside the truncated table body 32 and places it on the top surface of the placement table 3. At this time, the axis of the workpiece 01 is perpendicular to the placement table 3, and the axis of the output shaft is also perpendicular to the placement table 3; the first driving mechanism 4 drives the sliding plate 31 to slide downward along the sliding groove 321. Since the sliding plate 31 slides obliquely, the top ends of the three sliding plates 31 are away from each other during the downward sliding process of the sliding plate 31, so that the outer peripheral surface of the fan-shaped plate 311 is pressed tightly against the inner peripheral surface of the cavity of the workpiece 01. At this time, when the first driving mechanism The mechanism 4 continues to pull down the sliding plate 31, and the sliding plate 31 pulls down the workpiece 01 through the fan-shaped plate 311, so that the bottom surface of the workpiece 01 is pressed against the top surface of the placement table 3. At this time, the axis of the workpiece 01 is still perpendicular to the placement table 3; then the second driving mechanism 5 drives the left clamp 21 and the right clamp 22 to clamp the workpiece 01. Since the workpiece 01 is pressed against the top surface of the placement table 3 by the fan-shaped plate 311, when the left clamp 21 and the right clamp 22 hit the workpiece 01, the workpiece 01 is not easy to tilt, and the axis of the workpiece 01 is still perpendicular to the placement table 3, so that the tool can accurately process the workpiece 01, thereby reducing the error during the production of the workpiece 01.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A machine tool positioning workbench with automatic leveling function, characterized in that: The invention comprises a mounting seat (2), a left clamping jaw (21) and a right clamping jaw (22) slidably connected to the top surface of the mounting seat (2), and a placing table (3); the placing table (3) is U-shaped, and the two ends of the placing table (3) are connected to the top surface of the mounting seat (2), and the placing table (3) is used to place a workpiece (01); the top surface of the placing table (3) is connected to a truncated cone body (32), and three sliding plates (31) are obliquely and slidably arranged inside the placing table (3), and the three sliding plates (31) are evenly distributed around the circumference of the truncated cone body (32), and the circumferential surface of the truncated cone body (32) is provided with sliding grooves (321) for the sliding plates (31) to slide; the sliding plates (3 1) The bottom end extends out of the bottom surface of the placement table (3), and the top end of the sliding plate (31) extends out of the top surface of the placement table (3); the top end of the sliding plate (31) is detachably connected to a fan-shaped plate (311), and the cavity of the workpiece (01) is sleeved outside the truncated table body (32) and the fan-shaped plate (311); the mounting seat (2) is provided with a mounting cavity (23), and the mounting cavity (23) is provided with a first driving mechanism (4) for driving the sliding plate (31) to slide back and forth along the sliding groove (321), and the mounting cavity (23) is provided with a second driving mechanism (5) for driving the left clamping jaw (21) and the right clamping jaw (22) to open and close.

2. The machine tool positioning workbench with automatic leveling function according to claim 1, characterized in that: The first driving mechanism (4) comprises a cylinder body (41), a first piston rod (42), a first piston head (43) and a push-pull disc (44); the cylinder body (41) is installed in the installation cavity (23), the axis of the cylinder body (41) is colinear with the axis of the truncated cone body (32), the first piston head (43) slides on the inner wall of the cylinder body (41), the end of the first piston rod (42) is connected to the top surface of the first piston head (43), and the top end of the first piston rod (42) extends out of the top of the cylinder body (41) and the top surface of the installation seat (2); the push-pull disc (44) The disk (44) is coaxially connected to the top end of the first piston rod (42); the bottom end of the sliding plate (31) is connected to one end of a limiting block (45); the top surface of the other end of the limiting block (45) is in contact with the bottom surface of the push-pull disc (44); the bottom end of the sliding plate (31) is provided with a notch (312) for the push-pull disc (44) to extend into; the top surface of the push-pull disc (44) is in contact with the top surface of the notch (312); the top circumference of the cylinder body (41) is plugged and connected to a first oil pipe (411); the bottom circumference of the cylinder body (41) is plugged and connected to a second oil pipe (412).

3. The machine tool positioning workbench with automatic leveling function according to claim 2, characterized in that: Two guide plates (24) symmetrically arranged about the truncated cone (32) are installed on the top surface of the mounting seat (2); the bottom surfaces of the left clamping jaw (21) and the right clamping jaw (22) are both connected with a trapezoidal slider (25); the top surfaces of the two guide plates (24) are respectively provided with a trapezoidal groove (241) for the two trapezoidal sliders (25) to slide; the trapezoidal groove (241) passes through both ends of the guide plates (24); the second driving mechanism (5) is used to drive the trapezoidal slider (25) to slide in the trapezoidal groove (241).

4. The machine tool positioning workbench with automatic leveling function according to claim 3, characterized in that: The second driving mechanism (5) comprises a push-pull plate (51), a rotating shaft (52), a rotating arm (53) and a driving assembly (54); two push-pull plates (51) are provided, and the two push-pull plates (51) are respectively connected to the bottom surfaces of the two trapezoidal sliding blocks (25) close to each other at one end, and the bottom end of the push-pull plate (51) extends into the installation cavity (23), and the bottom surface of the trapezoidal groove (241) and the top surface of the installation seat (2) are provided with a movable groove (242) for the push-pull plate (51) to slide; two rotating shafts (52) are provided, and the two rotating shafts (52) are fixedly connected to the inner wall of the installation cavity (23), and the two rotating shafts (52) are relative to the truncated cone body (3 2) The axis is symmetrically arranged; two rotating arms (53) are arranged, and the two rotating arms (53) are respectively rotatably connected to the two rotating shafts (52); the top of the rotating arm (53) is provided with a first rotating opening (531) for the bottom end of the push-pull plate (51) to enter, the two side surfaces of the bottom end of the push-pull plate (51) are connected with a first rotating pin (511), and the top side surface of the rotating arm (53) is provided with a first waist-shaped hole (532) for the first rotating pin (511) to rotate; the driving component (54) is installed in the installation cavity (23), and the driving component (54) is used to drive the bottom ends of the two rotating arms (53) to synchronously approach each other or synchronously move away from each other.

5. The machine tool positioning workbench with automatic leveling function according to claim 4, characterized in that: The driving assembly (54) comprises a sliding block (541), a pressing block (542) and a driving member (543); two sliding blocks (541) are provided, the two sliding blocks (541) slide on the bottom surface of the mounting cavity (23), and the two sliding blocks (541) are symmetrically arranged about the axis of the truncated cone (32); the sides of the sliding blocks (541) close to each other are sloped, and the slope of the sliding blocks (541) is inclined upward; the pressing block (542) is arranged between the two sliding blocks (541), the two ends of the pressing block (542) are sloped, and the slope of the pressing block (542) is inclined downward, and the pressing block The two slope surfaces of (542) are respectively fitted to the slope surfaces of the two sliding blocks (541) and are slidably connected to the slope surfaces of the sliding blocks (541); the bottom ends of the two rotating arms (53) are respectively provided with second rotating openings (533) for the two sliding blocks (541) to enter, and the two side surfaces of the sliding blocks (541) are connected with second rotating pins (5411), and the side surfaces of the bottom ends of the rotating arms (53) are provided with second waist-shaped holes (534) for the second rotating pin (5411) to rotate; the driving member (543) is installed on the cylinder body (41), and the driving member (543) is used to drive the lower pressing block (542) to rise and fall.

6. The machine tool positioning workbench with automatic leveling function according to claim 5, characterized in that: The slopes at both ends of the pressing block (542) are connected to T-shaped blocks (5421), and the slopes of the two sliding blocks (541) are provided with T-shaped grooves (5412) for the two T-shaped blocks (5421) to slide.

7. The machine tool positioning workbench with automatic leveling function according to claim 5, characterized in that: A sliding rod (5413) is slidably disposed at the bottom of each sliding block (541), and the sliding rod (5413) passes through the sliding block (541). Two ends of the two sliding rods (5413) that are away from each other are connected with bolts (5414), and the bolts (5414) are threadedly connected to the mounting seat (2), and the ends of the bolts (5414) extend into the mounting cavity (23).

8. The machine tool positioning workbench with automatic leveling function according to claim 5, characterized in that: The driving member (543) comprises a second piston head (5431) and a second piston rod (5432). The second piston head (5431) slides on the inner wall of the cylinder body (41). The second piston head (5431) is located below the first piston head (43). The bottom surface of the second piston head (5431) is connected to two arc-shaped plates (5433) symmetrically arranged about the axis of the second piston head (5431). The second piston rod (5432) slides on the bottom of the cylinder body (41). The second piston rod (5432) The bottom end is connected to the middle position of the top surface of the lower pressure block (542); the top circumference of the second piston rod (5432) is connected to two symmetrically arranged positioning pins (5434); the inner walls of the two arc-shaped plates (5433) are both in contact with the top circumference of the second piston rod (5432); the two arc-shaped plates (5433) are respectively provided with strip grooves (5435) for the two positioning pins (5434) to slide up and down; the first piston head (43) is provided with a regulating valve (6) for connecting the two sides of the first piston head (43).

9. The machine tool positioning workbench with automatic leveling function according to claim 8, characterized in that: The regulating valves (6) include four regulating valves (6) which are evenly distributed around the circumference of the first piston head (43); two of the regulating valves (6) are used to transport the hydraulic oil on the side of the first piston head (43) away from the second piston head (5431) to the other side of the first piston head (43), and the two regulating valves (6) are symmetrically arranged; the other two regulating valves (6) are used to transport the hydraulic oil on the side of the first piston head (43) close to the second piston head (5431) to the other side of the first piston head (43), and the two regulating valves (6) are symmetrically arranged.

10. The machine tool positioning workbench with automatic leveling function according to claim 9, characterized in that: The regulating valve (6) comprises a valve tube (61), a spring (62), a sealing plug (63), a sliding rod (64) and a sealing ring (65); the sealing plug (63) is threadedly connected to the inner wall of one end of the valve tube (61); the spring (62) is arranged in the valve tube (61); one end of the sliding rod (64) slides in the valve tube (61); the end surface of the sliding rod (64) is pressed against one end of the spring (62); the other end of the spring (62) is pressed against the sealing plug (63); and the sealing ring (65) is connected to the circumferential surface of the sliding rod (64); a through hole (431) for inserting the valve tube (61) is arranged in the first piston head (43); the end surface of the sealing plug (63) away from the valve tube (61) is in contact with the first piston head (43); The side of the piston head (43) is flush, the end face of the sliding rod (64) away from the spring (62) is flush with the other side of the first piston head (43), and the sealing ring (65) is slidably sealed on the inner wall of the through hole (431); the inner wall of the end of the through hole (431) away from the sealing plug (63) is connected to a limiting ring (432), and the limiting ring (432) is pressed against the side of the sealing ring (65); two flow channels (433) are provided on the inner wall of the through hole (431), one end of the flow channel (433) is located at the sealing ring (65), and the other end of the flow channel (433) is connected to the side of the first piston head (43) close to the sealing plug (63); the valve tube (61) is threadedly connected to the inner wall of the through hole (431).

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