Precision cutting device for pin shaft machining

Abstract

The utility model discloses a precise cutting device for pin shaft machining, which comprises a supporting seat, transverse moving devices are erected on two sides of the supporting seat, a portal frame is mounted on the transverse moving devices, and a cutting assembly is mounted on the portal frame; a cutting fluid collecting drawer is slidably arranged on the lower side of the supporting base. The right end of the supporting base extends upwards to form a containing plate, a cutting fluid spraying device is arranged in the containing plate, a limiting groove is formed in the center of the containing plate, a fixing base is placed in the limiting groove and fixedly connected with a rotating shaft of the rotating motor, and a pin shaft fixing assembly is fixed in the fixing base and comprises a three-jaw chuck and a driving telescopic assembly. After the pin shaft is fixed through the three-jaw chuck, if the position of the pin shaft needs to be adjusted, the telescopic assembly is driven to fix the pin shaft, and then the pin shaft is driven to move to adjust the position. The machining position of the pin shaft can be quickly and automatically adjusted in the machining process, and the machining efficiency is improved.

Description

Technical field:

[0001] The utility model relates to the field of metal processing, in particular to a precision cutting device for processing a pin shaft. Background technology:

[0002] Cutting refers to a machining method that uses a regularly shaped tool to remove excess material from the workpiece surface, thereby ensuring that the geometric shape, dimensional accuracy, surface roughness and surface layer quality meet the design requirements.

[0003] Pins are a type of standardized fastener that can be used for static fixed connections or for relative movement with the connected parts. They are mainly used at the hinge of two parts to form a hinge connection. Pins are usually locked with a cotter pin, which is reliable and easy to disassemble.

[0004] The current pin cutting device adjusts the workpiece to be processed to a certain position and fixes it on a three-jaw chuck for processing. However, the workpiece cannot be moved after being fixed. If other parts need to be processed, the workpiece needs to be removed and reinstalled, resulting in low processing efficiency. To this end, we propose a pin processing precision cutting device to solve this problem. Utility model content:

[0005] The utility model provides a pin shaft processing precision cutting device, which solves the problem that in the prior art, a workpiece to be processed is adjusted to a certain position and fixed on a three-jaw chuck for processing, but the workpiece cannot be moved after being fixed. If other parts need to be processed, the workpiece needs to be removed and reinstalled, resulting in low processing efficiency.

[0006] The technical solution measures of the utility model are as follows: a pin shaft processing precision cutting device, comprising a support frame, horizontal plates on both sides of the support frame are respectively installed with horizontal moving devices, the horizontal moving devices are connected with a gantry, a cutting assembly is installed on the top of the gantry, a placement plate is extended upward from the top surface of the right side horizontal plate of the support frame, a cutting fluid spraying device is arranged inside the placement plate, a limiting groove is arranged at the center of the placement plate, a fixing seat is arranged in the limiting groove, a pin shaft fixing assembly is fixed inside the fixing seat by bolts, the pin shaft fixing assembly comprises a three-jaw chuck, a driving telescopic component, and a packaging part, sliding grooves are arranged at the bottom of the horizontal plates on both sides of the support frame, and the sliding grooves are equipped with a cutting fluid collecting drawer;

[0007] The telescopic driving assembly includes a cylinder, fixed plates are fixedly connected on both sides of the cylinder, a connecting component is fixedly connected to the middle position of the screw rod matched with the cylinder, the connecting component is fixedly connected to a third connecting rod, the third connecting rod is hinged to the second connecting rod, the second connecting rod is hinged to a clamp, and on the same side, the clamp is also hinged to the first connecting rod, the ends of the first connecting rod and the second connecting rod that are not hinged to the clamp are rotatably connected to the fixed plate by bolts, and the bolts can slide in the first sliding groove and the second sliding groove opened on the fixed plate.

[0008] Preferably, the lateral moving device includes a first rotating motor, a threaded rod, and a fixing ring. The rotating shaft of the first rotating motor is fixedly connected to one end of the threaded rod. The threaded rod is fixed through two fixing rings. The other end of the threaded rod is connected to a blocking block.

[0009] Preferably, the cutting assembly includes a lifting motor and a cutting tool group. The lifting end of the lifting motor is fixedly connected to a connecting block. The other end of the connecting block is provided with a rotating shaft. The lower end of the rotating shaft is rotatably connected to the cutting tool group. The cutting tool group includes a tool seat. Four cutting knives are hinged on the tool seat in a circular array.

[0010] Preferably, the cutting fluid spraying device comprises a water pipe, which runs from the top of the placement plate to the cutting fluid collecting drawer, wherein the upper end of the water pipe is connected to a high-pressure nozzle, and the other end is connected to a centrifugal pump.

[0011] Preferably, a first filter plate is arranged between the cutting fluid collecting drawer and the supporting frame, wherein the first filter plate is spliced ​​by a filter plate with holes and a filter plate without holes, and a second filter plate extends from the splicing point toward the bottom of the cutting fluid collecting drawer.

[0012] Preferably, the three-jaw chuck comprises a chuck and three claws, the chuck is arranged in the packaging part, a circular groove is opened at the center of the chuck, three sliding grooves are opened around the circular groove, which are opposite to each other and equally spaced, a moving block is slidably embedded in the sliding groove, a connecting column is extended from the top of the moving block, the connecting column is fixedly connected to the claws at a certain angle, a driven gear ring is extended from the periphery of the circular groove at the bottom of the chuck, the driven gear ring is rotatably connected with a fixed shaft, the fixed shaft is welded to the bottom of the packaging part, the circular groove passes through the fixed shaft and the bottom of the packaging part, a driving gear is meshed on the outside of the driven gear ring, the driving gear is laterally penetrated by a rotating shaft, both ends of the rotating shaft pass through two fixed blocks fixed on the chuck, one end of which is connected to a servo motor, a hollow shaft sleeve is extended from the bottom of the packaging part, and a driving telescopic component is installed inside the hollow shaft sleeve.

[0013] Preferably, the connecting component is a square main body with wings extending from both sides of the main body, and the hinge between the wing and the third connecting rod is also slidably connected to the third sliding groove provided on the connecting plate.

[0014] Preferably, the fixing seat is connected to a second rotating motor.

[0015] Preferably, the clamping claw is a three-step type.

[0016] Preferably, the pore size of the first filter plate is larger than the pore size of the second filter plate.

[0017] Preferably, the claws are evenly arranged at an angle of 120 degrees.

[0018] The beneficial effects of the utility model are:

[0019] 1. The utility model adds a telescopic component that can move the pin on the basis of a single fixed pin, so that the pin can be freely adjusted to the position that needs to be processed during the processing, and there is no need to disassemble the pin and reinstall it, which simplifies the operating procedures of the staff and greatly improves the processing efficiency of the pin.

[0020] 2. The telescopic component in the utility model reserves telescopic space when the screw is extended and retracted, which is convenient for the screw to move the pin shaft, and also reserves movable space for the pin shaft. The telescopic component can control the operation of the screw through the control of the cylinder, and then drive the connecting part to reciprocate on the fixed plate. The design of the connecting rod mechanism can drive the clamp to achieve opening and closing clamping. The structure runs smoothly, has high sensitivity and precision, and can effectively improve the processing accuracy.

[0021] 3. The cutting fluid spraying device in the utility model is used together with the cutting fluid collecting drawer. The waste chips generated after cutting can be washed by the cutting fluid. The cutting fluid passes through the first filter plate and is stored in the cutting fluid collecting drawer. Then, it passes through the second filter plate. The cutting fluid filtered by the second filter plate can be reused for washing the waste chips, thereby realizing the recycling of the cutting fluid. Description of the drawings:

[0022] Figure 1 It is a schematic diagram of the structure of the utility model.

[0023] Figure 2 This is a schematic diagram of the pin fixing assembly structure of the utility model.

[0024] Figure 3 This is a schematic diagram of the structure of a three-jaw chuck of the utility model.

[0025] Figure 4 It is a top view of the three-jaw chuck of the utility model.

[0026] Figure 5 This is a schematic diagram of the structure of the second filter plate of the utility model.

[0027] Figure 6 This is a schematic diagram of the structure of the cutting fluid spraying device of the utility model.

[0028] Figure 7 It is a schematic diagram of the pin fixing assembly of the utility model.

[0029] In the figure: 1, support frame; 2, lateral moving device; 3, gantry; 4, cutting assembly; 5, placement plate; 6, cutting fluid spraying device; 7, fixed seat; 8, pin fixing assembly; 9, cutting fluid collecting drawer; 10, second rotating motor; 2-1, first rotating motor; 2-2, threaded rod; 2-3 fixing ring; 2-4, blocking block; 4-1, lifting motor; 4-2, connecting block; 4-3, rotating shaft; 4-2-1, knife seat; 4-2-2, cutting knife; 6-1, water pipe; 6-2, high-pressure nozzle; 9-1, first filter plate; 9-2, second filter plate; 8-1, three-jaw chuck; 8-2, drive telescopic component; 8-3, packaging part; 8-1-1, chuck; 8-1-2, claw; 8-1-3, round slot; 8-1-4, sliding slot; 8-1-5, moving block; 8-1-6, connecting column; 8-1-7, driven gear ring; 8-1-8, fixed shaft; 8-1-9, driving gear; 8-1-10, rotating shaft; 8-1-11, fixed block; 8-1-12, servo motor; 8-1-13, hollow shaft sleeve; 8-2-1, cylinder; 8-2-2, connecting plate (8-2-2); 8-2-3, screw rod; 8-2-4, fixing plate; 8-2-5, connecting part; 8-2-6, third connecting rod; 8-2-7, second connecting rod; 8-2-9, fixture; 8-2-10, first connecting rod; 8-2-11, first slide slot; 8-2-12, second slide slot; 8-2-5-1, wing. Specific implementation method:

[0030] Combined with Figure 1 The utility model is a pin processing precision cutting device, which is further described.

[0031] The utility model provides a pin shaft processing precision cutting device, comprising a support frame 1, wherein lateral moving devices 2 are respectively installed on the horizontal plates on both sides of the support frame 1, the horizontal moving devices 2 are connected to a gantry frame 3, a cutting assembly 4 is installed on the top of the gantry frame 3, a placement plate 5 is extended upward from the top surface of the right side horizontal plate of the support frame 1, a cutting fluid spraying device 6 is arranged inside the placement plate 5, a limiting groove is arranged at the center of the placement plate 5, a fixing seat 7 is placed in the limiting groove, a pin shaft fixing assembly 8 is fixed inside the fixing seat 7 by bolts, the pin shaft fixing assembly 8 comprises a three-jaw chuck 8-1, a driving telescopic component 8-2, and a packaging part 8-3, sliding grooves are arranged at the bottom of the horizontal plates on both sides of the support frame, and the sliding grooves are equipped with a cutting fluid collecting drawer 9;

[0032] The telescopic component 8-2 comprises a cylinder 8-2-1, fixed plates 8-2-4 are fixedly connected on both sides of the cylinder 8-2-1, a connecting component 8-2-5 is fixedly connected at the middle position of the screw rod 8-2-3 matched with the cylinder 8-2-1, the connecting component 8-2-5 is fixedly connected with a third connecting rod 8-2-6, the third connecting rod 8-2-6 is hinged with a second connecting rod 8-2-7, the second connecting rod 8-2-7 is hinged with a clamp 8-2-9, and on the same side, the clamp 8-2-9 is also hinged with a first connecting rod 8-2-10, and the first connecting rod 8-2-10 and the second connecting rod 8-2-7, which are not hinged with the clamp 8-2-9, are rotatably connected to the fixed plate 8-2-4 by bolts, and the bolts can slide in the first sliding groove 8-2-11 and the second sliding groove 8-2-12 opened on the fixed plate 8-2-4.

[0033] Furthermore, the lateral moving device 2 includes a first rotating motor 2-1, a threaded rod 2-2, and a fixing ring 2-3. The rotating shaft of the first rotating motor 2-1 is fixedly connected to one end of the threaded rod 2-2. The threaded rod 2-2 is fixed by passing through two fixing rings 2-3. The other end of the threaded rod 2-2 is connected to a blocking block 2-4.

[0034] Furthermore, the cutting assembly 4 includes a lifting motor 4-1 and a cutting tool group. The lifting end of the lifting motor 4-1 is fixedly connected to a connecting block 4-2. The other end of the connecting block is provided with a rotating shaft 4-3. The lower end of the rotating shaft 4-3 is rotatably connected to the cutting tool group. The cutting tool group includes a tool holder 4-2-1. Four cutting knives 4-2-2 are hinged on the tool holder 4-2-1 in a circular array.

[0035] Furthermore, the cutting fluid spraying device 6 comprises a water pipe 6-1, which runs from the top of the placement plate 5 to the cutting fluid collecting bin 9. The upper end of the water pipe 6-1 is connected to a high-pressure nozzle 6-2, and the other end is connected to a centrifugal pump.

[0036] Furthermore, a first filter plate 9-1 is arranged between the cutting fluid collecting drawer 9 and the support frame 1. The first filter plate 9-1 is composed of a filter plate with holes and a filter plate without holes. A second filter plate 9-2 extends from the joint to the bottom of the cutting fluid collecting drawer 9.

[0037] Furthermore, the three-jaw chuck 8-1 includes a chuck 8-1-1 and three claws 8-1-2. The chuck 8-1-1 is arranged in the packaging part 8-3. A circular groove 8-1-3 is opened at the center of the chuck 8-1-1. Three sliding grooves 8-1-4 are arranged end to end and at equal intervals around the circular groove 8-1-3. A moving block 8-1-5 is slidably embedded in the sliding groove 8-1-4. A connecting column 8-1-6 extends from the top of the moving block 8-1-5. The connecting column 8-1-6 is fixedly connected to the claw 8-1-2 at a certain angle. A driven gear ring 8-1-7 is extended from the periphery of the circular groove 8-1-3 at the bottom of the chuck 8-1-1. The driven gear ring 8-1-7 rotates It is dynamically connected with a fixed shaft 8-1-8, and the fixed shaft 8-1-8 is welded to the bottom of the packaging part 8-3. The circular groove 8-1-3 passes through the fixed shaft 8-1-8 and the bottom of the packaging part 8-3. A driving gear 8-1-9 is meshed on the outer side of the driven gear ring 8-1-7. The driving gear 8-1-9 is horizontally penetrated by a rotating shaft 8-1-10. Both ends of the rotating shaft 8-1-10 pass through two fixed blocks 8-1-11 fixed on the chuck 8-1-1, and one end is connected to a servo motor 8-1-12. A hollow shaft sleeve 8-1-13 is extended from the bottom of the packaging part 8-3, and a telescopic component 8-2 is installed inside the hollow shaft sleeve 8-1-13.

[0038] Furthermore, the connecting component 8-2-5 is a square body with wings 8-2-5-1 extending from both sides of the body, and the hinge between the wing 8-2-5-1 and the third connecting rod 8-2-6 is also slidably connected to the third sliding groove 8-2-13 provided on the connecting plate 8-2-2.

[0039] Furthermore, the fixing seat 7 is connected to a second rotating motor 10 .

[0040] Furthermore, the clamping claw 8-1-2 is a three-step type.

[0041] Furthermore, the pore size of the first filter plate 9 - 1 is larger than the pore size of the second filter plate 9 - 2 .

[0042] Furthermore, the claws 8-1-2 are evenly arranged at an angle of 120 degrees.

[0043] The working principle of the utility model is as follows: when the pin shaft needs to be cut, the pin shaft is extended into the circular groove provided and adjusted to a suitable position, the servo motor is driven to drive the active gear to rotate and then drive the driven gear to rotate, the moving block moves centripetally so that the three claws tend to move toward the pin shaft, and the three claws apply force to the pin shaft until the pin shaft is fixed; then the first rotating motor is driven to drive the threaded rod to rotate, thereby driving the gantry connected to the threaded rod to reciprocate, and the cutting assembly installed on the gantry will also move accordingly, after the cutting assembly is adjusted to a suitable horizontal position, the lifting motor is driven to adjust the longitudinal position of the cutting tool group, and a suitable cutting tool can also be selected according to the processing requirements. The cutting tool group is rotatably installed, and after the selected tool is rotated to the processing position, the tool blade collected in the storage space is turned downward to make it fit the pin shaft; the second rotating motor is driven to rotate the fixed seat, and the pin shaft fixing assembly fixed in the fixed seat will also rotate accordingly, and then the pin shaft fixed in the pin shaft fixing assembly starts to rotate for cutting processing. When a processing position is completed, if it is necessary to continue the transposition processing, the servo motor can be controlled to operate in the reverse direction to slightly loosen the pin shaft, and the cylinder can be operated at the same time, the screw rod moves toward the cylinder direction, and the connecting parts on the screw rod also move in the sliding groove opened in the fixed plate. The connecting rod of the connecting parts is hinged to realize the closure of the clamp. After the clamp clamps the pin shaft, if the screw rod continues to move, the first connecting rod and the second connecting rod can move in the first sliding groove and the second sliding groove to pull the pin shaft inward. If the pin shaft is to be pulled outward, it can be realized by changing the moving direction of the screw rod. The waste chips generated after cutting can be washed by cutting fluid. The cutting fluid passes through the first filter plate and is stored in the cutting fluid collection drawer, and then passes through the second filter plate. The cutting fluid filtered by the second filter plate can be reused to clean the waste chips, realizing the recycling of cutting fluid.

[0044] The above description is only the preferred embodiment of the present utility model. All other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present utility model.

Claims

1. A pin machining precision cutting device, comprising a support frame (1), characterized in that: The horizontal plates on both sides of the support frame (1) are respectively provided with horizontal moving devices (2), the horizontal moving devices (2) are connected with a gantry (3), a cutting assembly (4) is installed on the top of the gantry (3), a placement plate (5) is extended upward from the top surface of the right horizontal plate of the support frame (1), a cutting fluid spraying device (6) is arranged inside the placement plate (5), a limiting groove is arranged at the center of the placement plate (5), a fixing seat (7) is arranged in the limiting groove, a pin fixing assembly (8) is fixed inside the fixing seat (7) by bolts, the pin fixing assembly (8) comprises a three-jaw chuck (8-1), a telescopic driving assembly (8-2), and a packaging part (8-3), sliding grooves are arranged at the bottom of the horizontal plates on both sides of the support frame, and the sliding grooves are equipped with a cutting fluid collecting drawer (9); The telescopic driving assembly (8-2) comprises a cylinder (8-2-1), fixed plates (8-2-4) are fixedly connected to both sides of the cylinder (8-2-1), a connecting component (8-2-5) is fixedly connected to the middle position of a screw rod (8-2-3) matched with the cylinder (8-2-1), the connecting component (8-2-5) is fixedly connected to a third connecting rod (8-2-6), the third connecting rod (8-2-6) is hinged to a second connecting rod (8-2-7), and the second connecting rod (8-2-7) is hinged with a clamp (8-2-9), and on the same side, the clamp (8-2-9) is also hinged with a first connecting rod (8-2-10), and the end of the first connecting rod (8-2-10) and the second connecting rod (8-2-7) that is not hinged with the clamp (8-2-9) is rotatably connected to the fixed plate (8-2-4) by bolts, and the bolts can slide in the first sliding groove (8-2-11) and the second sliding groove (8-2-12) opened on the fixed plate (8-2-4).

2. A pin machining precision cutting device according to claim 1, characterized in that: The lateral moving device (2) comprises a first rotating motor (2-1), a threaded rod (2-2), and a fixing ring (2-3); the rotating shaft of the first rotating motor (2-1) is fixedly connected to one end of the threaded rod (2-2); the threaded rod (2-2) is fixed by passing through two fixing rings (2-3); and the other end of the threaded rod (2-2) is connected to a blocking block (2-4).

3. A pin machining precision cutting device according to claim 1, characterized in that: The cutting assembly (4) comprises a lifting motor (4-1) and a cutting tool group. The lifting end of the lifting motor (4-1) is fixedly connected to a connecting block (4-2). The other end of the connecting block is provided with a rotating shaft (4-3). The lower end of the rotating shaft (4-3) is rotatably connected to the cutting tool group. The cutting tool group comprises a tool holder (4-2-1). Four cutting knives (4-2-2) are hingedly connected to the tool holder (4-2-1) in a circular array.

4. A pin machining precision cutting device according to claim 1, characterized in that: The cutting fluid spraying device (6) comprises a water pipe (6-1), wherein the water pipe (6-1) runs from the top of the placement plate (5) to the cutting fluid collecting drawer (9), the upper end of the water pipe (6-1) is connected to a high-pressure nozzle (6-2), and the other end is connected to a centrifugal pump.

5. A pin machining precision cutting device according to claim 4, characterized in that: A first filter plate (9-1) is arranged between the cutting fluid collection drawer (9) and the support frame (1); the first filter plate (9-1) is composed of a filter plate with holes and a filter plate without holes spliced ​​together; a second filter plate (9-2) extends from the splicing point toward the bottom of the cutting fluid collection drawer (9).

6. The pin machining precision cutting device according to claim 1, characterized in that: The three-jaw chuck (8-1) comprises a chuck (8-1-1) and three claws (8-1-2). The chuck (8-1-1) is arranged in the packaging part (8-3). A circular groove (8-1-3) is provided at the center of the chuck (8-1-1). Three sliding grooves (8-1-4) are provided around the circular groove (8-1-3) and are arranged end to end and at equal intervals. A moving block (8-1-5) is slidably embedded in the sliding groove (8-1-4). A connecting column (8-1-6) extends from the top of the moving block (8-1-5). The connecting column (8-1-6) is fixedly connected to the claws (8-1-2) at a certain angle. A driven gear ring (8-1-7) extends from the periphery of the circular groove (8-1-3) at the bottom of the chuck (8-1-1). The driven gear ring (8-1-7) is rotatably connected to the moving block (8-1-5). A fixed shaft (8-1-8) is connected, the fixed shaft (8-1-8) is welded to the bottom of the packaging part (8-3), the circular groove (8-1-3) passes through the fixed shaft (8-1-8) and the bottom of the packaging part (8-3), the outer side of the driven gear ring (8-1-7) is meshed with a driving gear (8-1-9), the driving gear (8-1-9) is horizontally penetrated by a rotating shaft (8-1-10), both ends of the rotating shaft (8-1-10) pass through two fixed blocks (8-1-11) fixed on the chuck (8-1-1), one end of which is connected to a servo motor (8-1-12), a hollow shaft sleeve (8-1-13) extends from the bottom of the packaging part (8-3), and a driving telescopic component (8-2) is installed inside the hollow shaft sleeve (8-1-13).

7. The pin machining precision cutting device according to claim 1, characterized in that: The connecting component (8-2-5) is a square main body, with wings (8-2-5-1) extending from both sides of the main body, and the hinge between the wing (8-2-5-1) and the third connecting rod (8-2-6) is also slidably connected to a third sliding groove (8-2-13) provided on the connecting plate (8-2-2).

8. The pin machining precision cutting device according to claim 1, characterized in that: The fixing seat (7) is connected to a second rotating motor (10).

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