Turn-milling combined machining center for camshaft machining

Abstract

The invention discloses a turning and milling combined machining center for camshaft machining, and relates to the technical field of turning and milling combined machining centers. The turning and milling combined machining center for camshaft machining comprises a shell arranged on a turning and milling combined machining center body, a three-jaw self-centering chuck assembly and a cutter assembly, a center frame assembly is arranged at the bottom of the shell, and the center frame assembly comprises two symmetrically-arranged guide rails fixedly connected to the bottom of the shell; a hollow moving cover is slidably connected to the guide rail, a V-shaped groove is formed in the top of the moving cover, and an air cylinder is fixedly connected to the side wall of the shell. According to the turning and milling combined machining center for cam shaft machining, it can be guaranteed that the clamping force of the multiple balls on the cam shaft is constant, meanwhile, through arrangement of bristles, chippings can be prevented from making contact with the balls, air blowing cleaning can be conducted on the chippings on the surfaces of the balls and the cam shaft, the chippings are blown away outwards, the supporting effect of the balls is guaranteed, and the service life of the cam shaft is prolonged. And the processing quality is further ensured.

Description

Technical Field

[0001] The invention relates to the technical field of turning-milling compound machining centers, in particular to a turning-milling compound machining center for machining a camshaft. Background Art

[0002] The camshaft is a component in a piston engine. Its function is to control the opening and closing of the valve. During the processing of the camshaft, it needs to be processed by a turning and milling compound machining center. During processing, the two ends of the camshaft are clamped and rotated by two three-jaw self-centering chuck assemblies. At the same time, it is supported by a center frame assembly and processed by a tool assembly.

[0003] When the existing camshaft machining turning and milling compound machining center is in use, a plurality of ball bearings are arranged on the center frame to support the camshaft, which has the advantages of small friction resistance and flexible movement. However, when the center frame is used for support, it is not convenient to control the clamping force of the plurality of ball bearings on the camshaft to be constant, which affects the support effect. At the same time, during the machining process, debris is easy to adhere to the surface of the camshaft and the ball bearings, which will also affect the support effect and further affect the machining quality of the camshaft. Summary of the invention

[0004] The object of the present invention is to provide a camshaft machining turning and milling compound machining center to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a camshaft machining turning and milling compound machining center, comprising a shell, a three-jaw self-centering chuck assembly and a tool assembly arranged on the turning and milling compound machining center body, a center frame assembly is arranged at the bottom of the shell, and the center frame assembly comprises two symmetrically arranged guide rails fixedly connected to the bottom of the shell, and a hollow moving cover is slidably connected to the guide rails, a V-shaped groove is arranged on the top of the moving cover, a cylinder is fixedly connected to the side wall of the shell, and the telescopic end of the cylinder is fixed to the side wall of the moving cover, a plurality of moving blocks arranged in an array are connected to the moving cover through a reset mechanism, and a hollow moving column is fixedly connected to the side wall of each moving block, a ball is arranged at the end of each moving column, and the movement of the moving column is driven by a pushing mechanism.

[0006] Preferably, a plurality of blowing holes arranged in an array are provided at the end of each of the moving columns, and an air supply mechanism for driving the blowing holes to blow air is provided in the moving cover.

[0007] Preferably, the end of each of the movable columns is fixedly connected with a plurality of bristles arranged in an array.

[0008] Preferably, the reset mechanism comprises two symmetrically arranged T-shaped guide rods fixedly connected to the side walls of each moving block, and the side walls of the T-shaped guide rods are sleeved with a connecting frame, the connecting frame is fixed to the moving cover, and the side walls of each T-shaped guide rod are sleeved with a spring.

[0009] Preferably, the pushing mechanism includes a fixed block fixedly connected to the inner wall of the movable cover, and the side wall of the fixed block is fixedly connected to a fixed cylinder, the fixed cylinder is filled with hydraulic oil, and the side wall of the fixed cylinder is fixedly connected to a plurality of fixed tubes, each of the fixed tubes is inserted with a moving rod, and the other end of the moving rod is fixed to the moving block, a first moving plate is connected to the movable cover through a lifting mechanism, and a piston rod is fixedly connected to the top of the first moving plate, the piston rod is inserted in the fixed cylinder, and a pressure control component is provided on the side wall of the fixed cylinder.

[0010] Preferably, the air supply mechanism includes a fixed cover fixedly connected to the bottom of the movable cover, and the top of the fixed cover is fixedly connected to an air intake pipe, a first one-way valve is arranged in the air intake pipe, and the top of the fixed cover is fixedly connected to a plurality of air supply pipes, a second one-way valve is arranged in the air supply pipe, the other end of the air supply pipe is fixed to the side wall of the movable column, and an extrusion mechanism for extruding air is arranged in the fixed cover.

[0011] Preferably, the extrusion mechanism comprises a second movable plate slidably connected in the fixed cover, and a connecting rod is fixedly connected between the second movable plate and the first movable plate.

[0012] Preferably, the pressure control assembly comprises an L-shaped tube fixedly connected to the side wall of the fixed cylinder, and a counterweight block is inserted into the L-shaped tube.

[0013] Preferably, the lifting mechanism includes a sleeve rod fixedly connected to the bottom of the first movable plate, and the side wall of the sleeve rod is sleeved with a sleeve, the lower end of the sleeve is fixed to the bottom of the movable cover, and the bottom of the first movable plate is rotatably connected to a threaded rod, the side wall of the threaded rod is threadedly connected to a threaded tube, and the lower end of the threaded tube is fixed to the bottom of the movable cover.

[0014] Preferably, a motor is fixedly connected to the top of the first movable plate, and an output end of the motor is fixed to the upper end of the threaded rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This camshaft machining turning and milling compound machining center is provided with a pushing mechanism and a pressure control component. When the camshaft needs to be machined, two ends of the camshaft are clamped and rotated by two three-jaw self-centering chuck assemblies, and the camshaft can be subjected to turning and milling compound machining by a tool assembly. At the same time, during the machining process, the movable cover is moved by the cylinder, so that the position of the movable cover can be adjusted according to the use requirements. The camshaft is in the V-groove. When the camshaft needs to be supported, the motor is started, and the rotation of the motor drives the rotation of the threaded rod, which can drive the first movable cover to rotate. The movable plate and the piston rod move upward, thereby squeezing the hydraulic oil in the fixed cylinder, allowing the hydraulic oil to enter the fixed tube, and at the same time, it can push multiple moving rods to move, thereby driving multiple moving blocks and moving columns to move synchronously. At the same time, the spring is compressed. When the ball contacts the side wall of the camshaft, when the piston rod continues to move upward, it can push the counterweight block to move upward along the L-shaped tube, ensuring the constant clamping force, so that the support effect of the camshaft is better and the processing quality can be guaranteed; by setting an air supply mechanism, etc., after the center frame assembly completes the support of the camshaft, during processing, The camshaft is driven to rotate by the three-jaw self-centering chuck assembly, and the processing operation is performed by the tool assembly. At this time, the setting of the bristles can prevent debris from contacting the ball. At the same time, the piston rod can be driven to continue to move upward through the lifting mechanism. When the first movable plate moves upward, the second movable plate can be driven to move upward through the connecting rod. At this time, the air in the fixed cover can be squeezed. At the same time, the first one-way valve is closed and the second one-way valve is opened, so that the air in the fixed cover can be squeezed out through the air supply pipe and enter the movable column, and then blown out through the blowing hole, which can not only squeeze the ball but also The debris on the surface of the camshaft can be blown clean, and the debris can be blown outward to ensure the supporting effect of the ball, thereby ensuring the quality of the processing. After the processing is completed, the first movable plate and the piston rod are driven downward by the lifting mechanism. At this time, multiple movable columns can move and reset under the action of the spring, thereby loosening the camshaft. At the same time, when the first movable plate moves downward, the second movable plate can be driven downward by the connecting rod, so that negative pressure is generated in the fixed cover. At the same time, the first one-way valve is opened and the second one-way valve is closed. At this time, external air can enter the fixed cover through the intake pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal structure of the housing in the present invention;

[0019] Figure 3 It is a schematic diagram of the overall structure of the center frame assembly in the present invention;

[0020] Figure 4 It is a partial cross-sectional structural schematic diagram of the movable cover in the present invention;

[0021] Figure 5 It is a partial cross-sectional structural schematic diagram of the fixed cover in the present invention;

[0022] Figure 6 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 7 for Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0024] Figure 8 for Figure 5 Schematic diagram of the enlarged structure at C in the middle;

[0025] Fig. 9 for Figure 8 Schematic diagram of the enlarged structure at D in the middle.

[0026] In the figure: 1. Turning and milling compound machining center body; 101. Shell; 102. Tool assembly; 103. Three-jaw self-centering chuck assembly; 2. Reset mechanism; 201. Connecting frame; 202. T-shaped guide rod; 203. Spring; 3. Pushing mechanism; 301. First moving plate; 302. Fixed cylinder; 303. Fixed pipe; 304. Moving rod; 305. Piston rod; 306. Fixed block; 4. Pressure control assembly; 401. L-shaped pipe; 402. Counterweight block; 5. Lifting mechanism; 501 , sleeve; 502, sleeve rod; 503, threaded tube; 504, threaded rod; 6, bristles; 7, blowing hole; 8, air supply mechanism; 801, fixed cover; 802, air supply pipe; 803, air inlet pipe; 9, extrusion mechanism; 901, second movable plate; 902, connecting rod; 10, motor; 13, center frame assembly; 1301, guide rail; 1302, movable cover; 1303, cylinder; 1304, movable block; 1305, movable column; 1306, ball; 1307, V-groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 9The present invention provides a technical solution: a camshaft machining turning and milling compound machining center, comprising a shell 101, a three-jaw self-centering chuck assembly 103 and a tool assembly 102 arranged on a turning and milling compound machining center body 1, the shell 101, the three-jaw self-centering chuck assembly 103 and the tool assembly 102 are well-known technologies in the technical field, and their structures and principles are not repeated here. A center frame assembly 13 is arranged at the bottom of the shell 101, and the center frame assembly 13 includes two symmetrically arranged guide rails 1301 fixedly connected to the bottom of the shell 101, and a hollow movable cover 1302 is slidably connected to the guide rail 1301, and a V-shaped groove 1307 is arranged on the top of the movable cover 1302, and a cylinder 1303 is fixedly connected to the side wall of the shell 101 , and the telescopic end of the cylinder 1303 is fixed to the side wall of the movable cover 1302, and the movable cover 1302 is connected with a plurality of movable blocks 1304 arranged in an array through the reset mechanism 2, and the side wall of each movable block 1304 is fixedly connected with a hollow movable column 1305, and a ball 1306 is arranged at the end of each movable column 1305, and the movement of the movable column 1305 is pushed by the pushing mechanism 3, which can ensure that the clamping force of the plurality of balls 1306 on the camshaft is constant, and at the same time, through the setting of the bristles 6, the contact between the debris and the ball 1306 can be avoided, and the debris on the surface of the ball 1306 and the camshaft can be blown clean, and the debris can be blown outward to ensure the supporting effect of the ball 1306, thereby ensuring the quality of processing.

[0029] A plurality of blowing holes 7 arranged in an array are provided at the end of each movable column 1305, and an air supply mechanism 8 for driving the blowing holes 7 to blow air is provided in the movable cover 1302. By driving the blowing holes 7 to blow air through the air supply mechanism 8, not only can the ball 1306 and the debris on the surface of the camshaft be cleaned by blowing, but the debris can also be blown out, thereby ensuring the supporting effect of the ball 1306 and further ensuring the processing quality.

[0030] See also Figure 6 and Figure 7 The end of each movable column 1305 is fixedly connected with a plurality of bristles 6 arranged in an array. The arrangement of the bristles 6 can prevent debris from contacting the ball 1306 .

[0031] See also Figure 6 and Figure 7 The reset mechanism 2 includes two symmetrically arranged T-shaped guide rods 202 fixedly connected to the side walls of each moving block 1304, and the side walls of the T-shaped guide rods 202 are sleeved with a connecting frame 201, the connecting frame 201 is fixed to the moving cover 1302, and the side walls of each T-shaped guide rod 202 are sleeved with a spring 203, which guides and resets the movement of the moving block 1304.

[0032] See also Figure 6 , Figure 7and Fig. 9 The pushing mechanism 3 includes a fixed block 306 fixedly connected to the inner wall of the moving cover 1302, and the side wall of the fixed block 306 is fixedly connected to a fixed cylinder 302, the fixed cylinder 302 is filled with hydraulic oil, and the side wall of the fixed cylinder 302 is fixedly connected to a plurality of fixed tubes 303, each fixed tube 303 is inserted with a moving rod 304, and the other end of the moving rod 304 is fixed to the moving block 1304, the moving cover 1302 is connected to a first moving plate 301 through a lifting mechanism 5, and the top of the first moving plate 301 is fixedly connected to a piston rod 305, The piston rod 305 is inserted into the fixed cylinder 302, and the side wall of the fixed cylinder 302 is provided with a pressure control component 4. When the camshaft needs to be processed, the first movable plate 301 and the piston rod 305 are driven to move upward by the lifting mechanism 5, so that the hydraulic oil in the fixed cylinder 302 can be squeezed, so that the hydraulic oil enters the fixed tube 303. At the same time, it can push the multiple moving rods 304 to move, thereby driving the multiple moving blocks 1304 and the moving columns 1305 to move synchronously, and making the ball 1306 abut against the side wall of the camshaft.

[0033] See also Figure 6-Figure 8 The air supply mechanism 8 includes a fixed cover 801 fixedly connected to the bottom of the movable cover 1302, and the top of the fixed cover 801 is fixedly connected with an air inlet pipe 803, a first one-way valve is arranged in the air inlet pipe 803, the conducting direction of the first one-way valve is from the outside to the fixed cover 801, and the top of the fixed cover 801 is fixedly connected with a plurality of air supply pipes 802, a second one-way valve is arranged in the air supply pipe 802, the conducting direction of the second one-way valve is from the fixed cover 801 to the movable column 1305, the other end of the air supply pipe 802 is fixed to the side wall of the movable column 1305, and the fixed cover 801 is provided with an extrusion mechanism 9 for extruding air, and the center frame assembly 13 is to be assembled. After the camshaft support is completed, during processing, the camshaft is driven to rotate by the three-jaw self-centering chuck assembly 103, and the processing operation is performed through the tool assembly 102. At this time, the setting of the bristles 6 can prevent debris from contacting the ball 1306. At the same time, the piston rod 305 can be driven to continue to move upward through the lifting mechanism 5. When the first movable plate 301 moves upward, the air in the fixed cover 801 can be squeezed through the extrusion mechanism 9. At the same time, the first one-way valve is closed and the second one-way valve is opened, so that the air in the fixed cover 801 can be squeezed out through the air supply pipe 802 and enter the movable column 1305, and then blown out through the blowing hole 7.

[0034] See also Figure 8The squeezing mechanism 9 includes a second movable plate 901 slidably connected in the fixed cover 801, and a connecting rod 902 is fixedly connected between the second movable plate 901 and the first movable plate 301. When the first movable plate 301 moves upward, the second movable plate 901 can be driven to move upward through the connecting rod 902. At this time, the air in the fixed cover 801 can be squeezed.

[0035] See also Figure 7-Figure 9 The pressure control assembly 4 includes an L-shaped tube 401 fixedly connected to the side wall of the fixed cylinder 302, and a counterweight block 402 is inserted into the L-shaped tube 401. When the ball 1306 abuts against the side wall of the camshaft and the piston rod 305 continues to move upward, the counterweight block 402 can be pushed to move upward along the L-shaped tube 401, thereby ensuring the constancy of the clamping force, thereby providing better support for the camshaft and ensuring the quality of processing.

[0036] See also Figure 7 and Figure 8 The lifting mechanism 5 includes a sleeve rod 502 fixedly connected to the bottom of the first movable plate 301, and the side wall of the sleeve rod 502 is sleeved with a sleeve 501, the lower end of the sleeve 501 is fixed to the bottom of the movable cover 1302, and the bottom of the first movable plate 301 is rotatably connected with a threaded rod 504, the side wall of the threaded rod 504 is threadedly connected with a threaded tube 503, and the lower end of the threaded tube 503 is fixed to the bottom of the movable cover 1302. When the threaded rod 504 rotates, it can drive the first movable plate 301 to rise and fall, and at the same time, the sleeve rod 502 is slidably guided in the sleeve 501.

[0037] See also Figure 7 The top of the first movable plate 301 is fixedly connected with a motor 10, and the output end of the motor 10 is fixed to the upper end of the threaded rod 504. When the motor 10 is started, the rotation of the motor 10 drives the rotation of the threaded rod 504.

[0038] Working principle: When the camshaft needs to be processed, the two ends of the camshaft are clamped and rotated by two three-jaw self-centering chuck assemblies 103, and the camshaft can be subjected to turning and milling compound processing by the tool assembly 102. At the same time, during the processing, the movable cover 1302 is moved by the cylinder 1303, so that the position of the movable cover 1302 can be adjusted according to the use requirements, and the camshaft is in the V-groove 1307;

[0039] When the camshaft needs to be supported, the motor 10 is started. The rotation of the motor 10 drives the rotation of the threaded rod 504, which can drive the first movable plate 301 and the piston rod 305 to move upward, so that the hydraulic oil in the fixed cylinder 302 can be squeezed, so that the hydraulic oil enters the fixed tube 303, and at the same time, it can push the multiple movable rods 304 to move, thereby driving the multiple movable blocks 1304 and the movable column 1305 to move synchronously. At the same time, the spring 203 is compressed. When the ball 1306 is against the side wall of the camshaft, when the piston rod 305 continues to move upward, it can push the counterweight block 402 to move upward along the L-shaped tube 401, ensuring the constancy of the clamping force, so that the support effect of the camshaft is better and the processing quality can be guaranteed;

[0040] After the center frame assembly 13 completes the support of the camshaft, during processing, the camshaft is driven to rotate by the three-jaw self-centering chuck assembly 103, and the processing operation is performed by the tool assembly 102. At this time, the setting of the bristles 6 can prevent the debris from contacting the ball 1306. At the same time, the piston rod 305 can be driven to continue to move upwards through the lifting mechanism 5. When the first movable plate 301 moves upward, the second movable plate 901 can be driven to move upwards through the connecting rod 902. At this time, the air in the fixed cover 801 can be squeezed. At the same time, the first one-way valve is closed and the second one-way valve is opened, so that the air in the fixed cover 801 can be squeezed out through the air supply pipe 802 and enter the movable column 1305, and then blown out through the blowing hole 7, which can not only blow and clean the ball 1306 and the debris on the surface of the camshaft, but also blow the debris outwards, thereby ensuring the support effect of the ball 1306 and thus ensuring the quality of processing.

[0041] After the processing is completed, the first movable plate 301 and the piston rod 305 are driven to move downward by the lifting mechanism 5. At this time, the multiple movable columns 1305 can move and reset under the action of the spring 203, thereby loosening the camshaft. At the same time, when the first movable plate 301 moves downward, the second movable plate 901 can be driven to move downward through the connecting rod 902, so that negative pressure is generated in the fixed cover 801. At the same time, the first one-way valve is opened and the second one-way valve is closed. At this time, external air can enter the fixed cover 801 through the intake pipe 803.

Claims

1. A camshaft machining turning and milling combined machining center, comprising a housing (101) arranged on a turning and milling combined machining center body (1), a three-jaw self-centering chuck assembly (103) and a tool assembly (102), characterized in that: The bottom of the shell (101) is provided with a center frame assembly (13), and the center frame assembly (13) includes two symmetrically arranged guide rails (1301) fixedly connected to the bottom of the shell (101), and a hollow movable cover (1302) is slidably connected to the guide rails (1301), and a V-shaped groove (1307) is arranged on the top of the movable cover (1302), and a cylinder (1303) is fixedly connected to the side wall of the shell (101), and the cylinder ( The telescopic end of the movable cover (1303) is fixed to the side wall of the movable cover (1302), and the movable cover (1302) is connected to a plurality of movable blocks (1304) arranged in an array through a reset mechanism (2), and the side wall of each movable block (1304) is fixedly connected to a hollow movable column (1305), and a ball (1306) is arranged at the end of each movable column (1305), and the movement of the movable column (1305) is driven by a driving mechanism (3).

2. A camshaft turning and milling combined machining center according to claim 1, characterized in that: A plurality of blowing holes (7) arranged in an array are provided at the end of each of the moving columns (1305), and an air supply mechanism (8) for driving the blowing holes (7) to blow air is provided in the moving cover (1302).

3. The camshaft machining turning and milling combined machining center according to claim 1, characterized in that: The end of each movable column (1305) is fixedly connected to a plurality of bristles (6) arranged in an array.

4. The camshaft turning and milling combined machining center according to claim 1, characterized in that: The reset mechanism (2) comprises two symmetrically arranged T-shaped guide rods (202) fixedly connected to the side walls of each moving block (1304), and the side walls of the T-shaped guide rods (202) are sleeved with a connecting frame (201), the connecting frame (201) is fixed to the moving cover (1302), and the side walls of each T-shaped guide rod (202) are sleeved with a spring (203).

5. The camshaft turning and milling combined machining center according to claim 1, characterized in that: The pushing mechanism (3) comprises a fixed block (306) fixedly connected to the inner wall of the movable cover (1302), and the side wall of the fixed block (306) is fixedly connected to a fixed cylinder (302), the fixed cylinder (302) is filled with hydraulic oil, and the side wall of the fixed cylinder (302) is fixedly connected to a plurality of fixed tubes (303), each of the fixed tubes (303) is inserted with a movable rod (304), and the other end of the movable rod (304) is fixed to the movable block (1304), the movable cover (1302) is connected to a first movable plate (301) via a lifting mechanism (5), and the top of the first movable plate (301) is fixedly connected to a piston rod (305), the piston rod (305) is inserted in the fixed cylinder (302), and the side wall of the fixed cylinder (302) is provided with a pressure control component (4).

6. The camshaft turning and milling combined machining center according to claim 2, characterized in that: The air supply mechanism (8) comprises a fixed cover (801) fixedly connected to the bottom of the movable cover (1302), and the top of the fixed cover (801) is fixedly connected to an air intake pipe (803), a first one-way valve is arranged in the air intake pipe (803), and the top of the fixed cover (801) is fixedly connected to a plurality of air supply pipes (802), a second one-way valve is arranged in the air supply pipe (802), the other end of the air supply pipe (802) is fixed to the side wall of the movable column (1305), and a squeezing mechanism (9) for squeezing air is arranged in the fixed cover (801).

7. A camshaft turning and milling combined machining center according to claim 6, characterized in that: The extrusion mechanism (9) comprises a second movable plate (901) slidably connected in the fixed cover (801), and a connecting rod (902) is fixedly connected between the second movable plate (901) and the first movable plate (301).

8. The camshaft turning and milling combined machining center according to claim 5, characterized in that: The pressure control assembly (4) comprises an L-shaped tube (401) fixedly connected to the side wall of the fixed cylinder (302), and a counterweight block (402) is inserted into the L-shaped tube (401).

9. The camshaft turning and milling combined machining center according to claim 5, characterized in that: The lifting mechanism (5) comprises a sleeve rod (502) fixedly connected to the bottom of the first movable plate (301), and a sleeve (501) is sleeved on the side wall of the sleeve rod (502), the lower end of the sleeve (501) is fixed to the bottom of the movable cover (1302), and the bottom of the first movable plate (301) is rotatably connected to a threaded rod (504), the side wall of the threaded rod (504) is threadedly connected to a threaded tube (503), and the lower end of the threaded tube (503) is fixed to the bottom of the movable cover (1302).

10. The camshaft turning and milling combined machining center according to claim 9, characterized in that: A motor (10) is fixedly connected to the top of the first movable plate (301), and an output end of the motor (10) is fixed to the upper end of the threaded rod (504).

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