Workpiece coaxial lifting mechanism for precision machine tool

Abstract

The workpiece coaxial lifting mechanism for the precision machine tool comprises a bottom fixing plate, a reverser is installed in the middle of the top end of the bottom fixing plate, a lead screw is vertically arranged at the top end of the reverser, and a maintenance assembly facilitating oiling and lubricating is arranged on the right side of an internal thread sleeve. According to the workpiece coaxial lifting mechanism for the precision machine tool, by arranging the fixing base, the internal thread inserting opening, the bearing circular plate, the rubber oil bag, the external thread connecting nozzle and the oil guide pipe, when the workpiece coaxial lifting mechanism is used, an oil storage component composed of the bearing circular plate, the rubber oil bag and the external thread connecting nozzle is taken down, and a certain amount of lubricating oil is injected along the external thread connecting nozzle; and then the external thread connecting nozzle is screwed in along the internal thread inserting opening in the top of the fixing base, then the servo motor is started to lift the lifting push plate to the highest position and then lower the lifting push plate, the operation is repeated for several times, the function of facilitating rapid oiling maintenance is achieved, and the problem that the device does not have the function of facilitating rapid oiling maintenance is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool accessories, in particular to a workpiece coaxial lifting mechanism for a precision machine tool. Background Art

[0002] Precision machine tools refer to machine tools that can perform high-precision processing, covering a variety of equipment such as jig boring machines, thread grinders, worm grinders, gear grinders, optical grinders, etc.

[0003] The coaxial lifting mechanism is a common accessory of precision machine tools. It is mainly used to support the workpiece and adjust the height of the workpiece to ensure the processing accuracy. The height is usually adjusted by a screw drive. There are some functional deficiencies in actual use and there is room for improvement. For example, during the long-term and high-intensity working process of the screw-driven lifting platform, there is high-frequency friction between the screw and the threaded sleeve, and timely oiling and maintenance are required to ensure smooth and stable up and down adjustment. The oiling maintenance requires the lifting platform to be removed and manually applied, which is more troublesome to operate and does not have the function of facilitating quick oiling and maintenance.

[0004] Now, a new type of coaxial lifting mechanism for workpieces used in precision machine tools is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a workpiece coaxial lifting mechanism for a precision machine tool, so as to solve the problem that the above-mentioned background technology does not have the function of facilitating rapid oiling and maintenance.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a coaxial lifting mechanism for a workpiece for a precision machine tool, comprising a bottom fixing plate, a commutator is installed at the middle position of the top of the bottom fixing plate, a servo motor is installed on the right side of the commutator, a screw rod is vertically arranged on the top of the commutator, four corners of the top of the bottom fixing plate are respectively vertically fixedly connected with guide rods, the top of the guide rod is fixedly connected with a top fixing plate, two groups of sliding sleeves are respectively fixedly connected on the left and right sides of the bottom end of the top fixing plate, a lifting push plate is arranged below the top fixing plate, an internal threaded sleeve is fixedly connected at the middle position of the top of the lifting push plate, two groups of lifting push rods are respectively vertically fixedly connected on both sides of the top of the lifting push plate, the top of the lifting push rod is fixedly connected with a workpiece carrying plate frame, and a maintenance component for facilitating oiling and lubrication is arranged on the right side of the internal threaded sleeve.

[0007] The maintenance component includes a fixed seat, which is arranged on the right side of the internally threaded sleeve, an internally threaded socket is arranged at the middle position of the top end of the fixed seat, a supporting circular plate is arranged above the fixed seat, a rubber oil bag is movably connected to the top end of the supporting circular plate, an externally threaded connecting nozzle is fixedly connected to the middle position of the bottom end of the supporting circular plate, and an oil guide pipe is movably connected between the left side of the fixed seat and the right side of the internally threaded sleeve.

[0008] Preferably, the bottom end of the fixing seat is connected to the top end of the lifting push plate, and the top ends of the internal threaded sleeve and the fixing seat are at the same height.

[0009] Preferably, the rubber oil bag is elastic, and the threads outside the external threaded connection nozzle and the threads inside the internal threaded socket are consistent.

[0010] Preferably, the interiors of the rubber oil bag and the externally threaded connecting nozzle are connected, and the interiors of the internally threaded sleeve, the internally threaded socket, and the oil guide pipe are connected.

[0011] Preferably, a plate placement groove is provided at the top of the workpiece supporting plate rack, and externally threaded fixing rods are vertically fixedly connected to the four corners of the bottom end of the plate placement groove, and a fixing nut is sleeved on the top of the externally threaded fixing rod, and a workpiece positioning plate is horizontally placed inside the plate placement groove.

[0012] Preferably, the externally threaded fixing rod passes through the upper and lower ends of the workpiece positioning plate, and the internal threads of the fixing nut and the external threads of the externally threaded fixing rod match each other.

[0013] Preferably, a first baffle is respectively provided at the front and rear ends of the bottom of the workpiece carrier plate frame, a first connecting plate is respectively welded to the left and right sides of the top of the first baffle plate, a second baffle is respectively provided at the left and right sides of the bottom of the workpiece carrier plate frame, a second connecting plate is respectively welded to the front and rear ends of the top of the second baffle plate, and mounting screws are respectively inserted at the bottom of the first connecting plate and the second connecting plate from bottom to top.

[0014] Preferably, the mounting screws pass through the first connecting plate and the second connecting plate and extend into the interior of the workpiece bearing plate frame, and the top ends of the first shield plate, the first connecting plate, the second shield plate and the second connecting plate are flush.

[0015] Compared with the prior art, the utility model has the beneficial effects that the workpiece coaxial lifting mechanism for precision machine tools not only realizes the function of convenient and quick oiling and maintenance, but also realizes the function of detachable and replaceable bearing plates, and also realizes the function of side chip blocking;

[0016] (1) A fixed seat, an internal thread socket, a supporting circular plate, a rubber oil bag, an external thread connection nozzle and an oil guide pipe are provided. When in use, the workpiece is placed horizontally on the workpiece positioning plate, and the positioning piece is screwed into the positioning hole on the top of the workpiece positioning plate to position the workpiece. The servo motor drives the screw to rotate through the commutator. The screw and the internal thread sleeve cooperate to drive the lifting and pushing plate to move up and down along the outside of the guide rod. The lifting push rod on the top of the lifting and pushing plate pushes the workpiece carrier frame up and down. The height of the workpiece positioning plate and the workpiece on its top changes synchronously. When the screw needs to be adjusted, When oiling and maintaining the contact surface between the rod and the internal threaded sleeve, remove the oil storage component consisting of the supporting circular plate, rubber oil bag and external threaded connection nozzle, inject a certain amount of lubricating oil along the external threaded connection nozzle, then screw the external threaded connection nozzle into the internal threaded socket on the top of the fixed seat, then start the servo motor to raise the lifting push plate to the highest position and then lower it, and repeat several times. After the rubber oil bag is squeezed, the grease enters the internal threaded sleeve along the oil guide pipe. As the internal threaded sleeve repeats several times up and down, the grease is evenly spread, realizing the function of facilitating and quickly oiling and maintaining;

[0017] (2) By providing a plate placement groove, an external thread fixing rod, a fixing nut and a workpiece positioning plate, when in use, the workpiece is horizontally placed on the workpiece positioning plate to facilitate subsequent machine tool processing. When the workpiece positioning plate is damaged and needs to be cleaned according to processing needs, the fixing nut on the external thread fixing rod is loosened and removed, and the workpiece positioning plate without restrictions can be directly lifted up and separated from the plate placement groove, and can be directly replaced, cleaned, etc., realizing the function of detachable and replaceable load-bearing plate;

[0018] (3) By providing the first baffle, the first connecting plate, the second baffle, the second connecting plate and the mounting screws, during the processing, when material debris splashes, the first baffle and the second baffle can prevent the debris from splashing onto the surface of the screw rod and causing poor lifting and lowering. The first connecting plate, the second connecting plate and the mounting screws provide physical support for the installation and fixation of the first baffle and the second baffle, thereby realizing the function of side chip blocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of an enlarged front cross-sectional structure of a fixing seat of the utility model;

[0021] Figure 3 It is a schematic diagram of a partial cross-sectional structure of a workpiece carrier plate frame of the utility model when viewed from above;

[0022] Figure 4 It is a schematic diagram of the workpiece carrying plate frame of the utility model when viewed from above.

[0023] In the figure: 1. bottom fixing plate; 2. lifting push plate; 3. commutator; 4. servo motor; 5. screw; 6. internal threaded sleeve; 7. fixing seat; 8. internal threaded socket; 9. supporting circular plate; 10. rubber oil bag; 11. external threaded connection nozzle; 12. oil guide pipe; 13. guide rod; 14. top fixing plate; 15. workpiece bearing plate frame; 16. sliding sleeve; 17. lifting push rod; 18. plate surface placement groove; 19. external threaded fixing rod; 20. fixing nut; 21. workpiece positioning plate; 22. first baffle; 23. first connecting plate; 24. second baffle; 25. second connecting plate; 26. mounting screws. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1: Please refer to Figure 1-4 A coaxial lifting mechanism for a workpiece for a precision machine tool comprises a bottom fixed plate 1, a commutator 3 is installed at the middle position of the top of the bottom fixed plate 1, a servo motor 4 is installed on the right side of the commutator 3, a screw rod 5 is vertically arranged at the top of the commutator 3, four corners of the top of the bottom fixed plate 1 are respectively vertically fixedly connected with guide rods 13, the top of the guide rod 13 is fixedly connected with a top fixed plate 14, two groups of sliding sleeves 16 are respectively fixedly connected on the left and right sides of the bottom of the top fixed plate 14, a lifting push plate 2 is arranged below the top fixed plate 14, an internal threaded sleeve 6 is fixedly connected at the middle position of the top of the lifting push plate 2, two groups of lifting push rods 17 are respectively vertically fixedly connected on both sides of the top of the lifting push plate 2, a workpiece bearing plate frame 15 is fixedly connected to the top of the lifting push rod 17, and a maintenance component for oiling and lubrication is arranged on the right side of the internal threaded sleeve 6;

[0026] See also Figure 1-4 A coaxial lifting mechanism for a workpiece used in a precision machine tool also includes a maintenance component, which includes a fixed seat 7, which is arranged on the right side of an internally threaded sleeve 6, an internally threaded socket 8 is arranged at the middle position of the top of the fixed seat 7, a supporting circular plate 9 is arranged above the fixed seat 7, a rubber oil bag 10 is movably connected to the top of the supporting circular plate 9, an externally threaded connection nozzle 11 is fixedly connected to the middle position of the bottom of the supporting circular plate 9, and an oil guide pipe 12 is movably connected between the left side of the fixed seat 7 and the right side of the internally threaded sleeve 6;

[0027] The bottom end of the fixing seat 7 is connected to the top end of the lifting push plate 2, the internal threaded sleeve 6 and the top end of the fixing seat 7 are at the same height, the rubber oil bag 10 is elastic, the external thread of the external threaded connection nozzle 11 and the internal thread of the internal threaded socket 8 are consistent, the rubber oil bag 10 and the external threaded connection nozzle 11 are connected inside, and the internal threaded sleeve 6, the internal threaded socket 8, and the oil guide pipe 12 are connected inside, which is convenient for oiling and lubrication;

[0028] Specifically, Figure 1 and Figure 2 As shown, the oil storage component composed of the supporting circular plate 9, the rubber oil bag 10, and the external threaded connection nozzle 11 is removed, and a certain amount of lubricating oil is injected along the external threaded connection nozzle 11. Then, the external threaded connection nozzle 11 is screwed into the internal threaded socket 8 on the top of the fixed seat 7. Then, the servo motor 4 is started to raise the lifting push plate 2 to the highest position and then lower it, and repeat several times. After the rubber oil bag 10 is squeezed, the grease enters the internal threaded sleeve 6 along the oil guide pipe 12. As the internal threaded sleeve 6 repeats several times up and down, the grease is evenly spread.

[0029] Embodiment 2: A plate surface placement groove 18 is provided at the top of the workpiece carrier plate frame 15, and external thread fixing rods 19 are respectively vertically fixedly connected at the four corners of the bottom end of the plate surface placement groove 18, and a fixing nut 20 is sleeved on the top of the external thread fixing rod 19. A workpiece positioning plate 21 is horizontally placed inside the plate surface placement groove 18, and the external thread fixing rod 19 passes through the upper and lower ends of the workpiece positioning plate 21. The internal thread of the fixing nut 20 is consistent with the external thread fixing rod 19, which is convenient for disassembly and replacement of the positioning plate;

[0030] Specifically, Figure 1 and Figure 3 As shown, loosen and remove the fixing nut 20 on the external thread fixing rod 19, and the workpiece positioning plate 21 without restriction can be directly lifted up and separated from the plate surface placement groove 18, and can be directly replaced, cleaned, etc.

[0031] Embodiment 3: The front and rear ends of the bottom of the workpiece carrier plate frame 15 are respectively provided with a first shield plate 22, and the left and right sides of the top of the first shield plate 22 are respectively welded with a first connecting plate 23, and the left and right sides of the bottom of the workpiece carrier plate frame 15 are respectively provided with a second shield plate 24, and the front and rear ends of the top of the second shield plate 24 are respectively welded with a second connecting plate 25, and the bottom ends of the first connecting plate 23 and the second connecting plate 25 are plugged with mounting screws 26 from bottom to top, and the mounting screws 26 pass through the first connecting plate 23 and the second connecting plate 25 and extend into the interior of the workpiece carrier plate frame 15, and the top ends of the first shield plate 22, the first connecting plate 23, the second shield plate 24, and the second connecting plate 25 are flush, which can block some flying debris;

[0032] Specifically, Figure 1 and Figure 4As shown, the first baffle 22 and the second baffle 24 can prevent debris from splashing onto the surface of the screw rod 5 and causing poor lifting, and the first connecting plate 23, the second connecting plate 25 and the mounting screws 26 provide physical support for the installation and fixation of the first baffle 22 and the second baffle 24.

[0033] Working principle: When the utility model is in use, first, the workpiece is placed horizontally on the workpiece positioning plate 21, and the positioning piece is screwed into the positioning hole on the top of the workpiece positioning plate 21 to position the workpiece. The servo motor 4 drives the screw rod 5 to rotate through the commutator 3. The screw rod 5 cooperates with the internal threaded sleeve 6 to drive the lifting and pushing plate 2 to move up and down along the outside of the guide rod 13. The lifting push rod 17 on the top of the lifting and pushing plate 2 pushes the workpiece carrier plate frame 15 to move up and down, and the height of the workpiece positioning plate 21 and the workpiece on its top changes synchronously. When it is necessary to adjust the screw rod 5 and the internal threaded sleeve 6, the lifting and pushing plate 2 is moved up and down along the outside of the guide rod 13. For oiling and maintenance of the contact surface of the sleeve 6, remove the oil storage component composed of the supporting circular plate 9, the rubber oil bag 10, and the external thread connection nozzle 11, inject a certain amount of lubricating oil along the external thread connection nozzle 11, and then screw the external thread connection nozzle 11 along the internal thread socket 8 on the top of the fixed seat 7, and then start the servo motor 4 to raise the lifting push plate 2 to the highest point and then lower it, reciprocating several times. After the rubber oil bag 10 is squeezed, the grease enters the internal thread sleeve 6 along the oil guide pipe 12. As the internal thread sleeve 6 reciprocates up and down several times, the grease is evenly applied. The workpiece is placed horizontally on the workpiece positioning plate 21 to facilitate subsequent machine tool processing. According to the processing needs or when the workpiece positioning plate 21 is damaged and needs to be cleaned, loosen and remove the fixing nut 20 on the external thread fixing rod 19. The workpiece positioning plate 21 without restrictions can be directly lifted up and separated from the plate surface placement groove 18, and can be directly replaced, cleaned, etc. During the processing, material debris splashes, and the first baffle 22 and the second baffle 24 can prevent the debris from splashing onto the surface of the screw rod 5 and causing poor lifting and lowering. The first connecting plate 23, the second connecting plate 25 and the mounting screws 26 provide physical support for the installation and fixation of the first baffle 22 and the second baffle 24.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A coaxial lifting mechanism for a workpiece used in a precision machine tool, comprising a bottom fixing plate (1), characterized in that: A commutator (3) is installed at the middle position of the top of the bottom fixed plate (1), a servo motor (4) is installed on the right side of the commutator (3), a screw rod (5) is vertically arranged at the top of the commutator (3), four corners of the top of the bottom fixed plate (1) are respectively vertically fixedly connected with guide rods (13), the top of the guide rod (13) is fixedly connected with a top fixed plate (14), two groups of sliding sleeves (16) are respectively fixedly connected on the left and right sides of the bottom end of the top fixed plate (14), a lifting push plate (2) is arranged below the top fixed plate (14), an internal threaded sleeve (6) is fixedly connected at the middle position of the top of the lifting push plate (2), two groups of lifting push rods (17) are respectively vertically fixedly connected on both sides of the top of the lifting push plate (2), the top of the lifting push rod (17) is fixedly connected with a workpiece bearing plate frame (15), and a maintenance component for facilitating oiling and lubrication is arranged on the right side of the internal threaded sleeve (6); The maintenance component comprises a fixing seat (7), the fixing seat (7) is arranged on the right side of the internal threaded sleeve (6), an internal threaded socket (8) is arranged at the middle position of the top end of the fixing seat (7), a supporting circular plate (9) is arranged above the fixing seat (7), a rubber oil bag (10) is movably connected to the top end of the supporting circular plate (9), an external threaded connection nozzle (11) is fixedly connected to the middle position of the bottom end of the supporting circular plate (9), and an oil guide pipe (12) is movably connected between the left side of the fixing seat (7) and the right side of the internal threaded sleeve (6).

2. The coaxial lifting mechanism for a workpiece used in a precision machine tool according to claim 1, characterized in that: The bottom end of the fixing seat (7) is connected to the top end of the lifting push plate (2), and the top ends of the internal threaded sleeve (6) and the fixing seat (7) are at the same height.

3. The coaxial lifting mechanism for a workpiece used in a precision machine tool according to claim 1, characterized in that: The rubber oil bag (10) is elastic, and the external thread of the external thread connection nozzle (11) is consistent with the internal thread of the internal thread socket (8).

4. The coaxial lifting mechanism for a workpiece used in a precision machine tool according to claim 1, characterized in that: The interiors of the rubber oil bag (10) and the external thread connection nozzle (11) are connected, and the interiors of the internal thread sleeve (6), the internal thread socket (8), and the oil guide pipe (12) are connected.

5. The coaxial lifting mechanism for a workpiece used in a precision machine tool according to claim 1, characterized in that: The top of the workpiece carrier plate frame (15) is provided with a plate surface placement groove (18), and the four corners at the bottom end of the plate surface placement groove (18) are respectively vertically fixedly connected with external threaded fixing rods (19), and the top end of the external threaded fixing rod (19) is sleeved with a fixing nut (20), and a workpiece positioning plate (21) is horizontally placed inside the plate surface placement groove (18).

6. The coaxial lifting mechanism for a workpiece used in a precision machine tool according to claim 5, characterized in that: The external thread fixing rod (19) passes through the upper and lower ends of the workpiece positioning plate (21), and the internal thread of the fixing nut (20) matches the external thread of the external thread fixing rod (19).

7. The coaxial lifting mechanism for a workpiece used in a precision machine tool according to claim 1, characterized in that: The front and rear ends of the bottom of the workpiece carrier plate frame (15) are respectively provided with a first shield plate (22), and the left and right sides of the top of the first shield plate (22) are respectively welded with a first connecting plate (23), and the left and right sides of the bottom of the workpiece carrier plate frame (15) are respectively provided with a second shield plate (24), and the front and rear ends of the top of the second shield plate (24) are respectively welded with a second connecting plate (25), and the bottom ends of the first connecting plate (23) and the second connecting plate (25) are respectively inserted with mounting screws (26) from bottom to top.

8. The coaxial lifting mechanism for a workpiece used in a precision machine tool according to claim 7, characterized in that: The mounting screw (26) passes through the first connecting plate (23) and the second connecting plate (25) and extends into the interior of the workpiece bearing plate frame (15); the top ends of the first shielding plate (22), the first connecting plate (23), the second shielding plate (24) and the second connecting plate (25) are flush.

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