Vertical shaft guide rail for ultra-precision grinding machining

Abstract

The invention relates to the technical field of ultra-precision machine tool machining, in particular to a vertical shaft guide rail for ultra-precision grinding machining, which comprises a guide rail base, a linear guide rail, a worktable, a balancing device, a power-off protection device, a driving motor and a ball screw, the linear guide rail is slidably installed on the guide rail base, the workbench is installed on the linear guide rail, the fixed end of the balancing device is fixed to the guide rail base, and the movable end of the balancing device is connected with the workbench and used for adjusting the levelness of the workbench. The driving motor is fixed to the guide rail base, an output shaft of the driving motor is connected with the ball screw to drive the ball screw to move, and one end of the ball screw is installed on the guide rail base and used for driving the workbench to linearly move. One end of the power-off protection device is installed on the ball screw, and the other end of the power-off protection device is rotatably installed on the guide rail base and used for releasing and locking the linear guide rail. The vertical shaft guide rail for ultra-precision grinding machining aims at solving the problem that a traditional vertical shaft guide rail is low in precision.

Description

Technical Field

[0001] The invention relates to the technical field of ultra-precision machine tool processing, and in particular to a vertical axis guide rail for ultra-precision grinding processing. Background Art

[0002] With the increasing functional integration of modern military equipment, the optical systems of detection, imaging, aiming, etc. of aviation and airborne weapons need to further improve the imaging resolution, expand the field of view, improve the imaging quality, and increase the detection distance, while the requirements for system weight and volume continue to decrease. Traditional processing machine tools can no longer meet the requirements of weapons and equipment for advanced optical systems. The parts of these optical systems require ultra-precision processing machine tools for processing.

[0003] Ultra-precision molding technology for glass optical components is widely used in the large-scale production of glass optical components. The batch molding manufacturing of glass optical components is realized through high-precision molding devices. The process route can realize the rapid batch manufacturing of small-diameter glass optical components. The molded optical components have good surface consistency and low defective rate, which can effectively reduce processing costs and improve processing efficiency. Ultra-precision grinding equipment is a key equipment for high-precision grinding. In order to grind free-form surfaces and dress ultra-precision grinding wheels, ultra-precision grinding equipment must be equipped with vertical axis guides.

[0004] Therefore, the inventors provide a vertical axis guide rail for ultra-precision grinding. Summary of the invention

[0005] (1) Technical issues to be solved

[0006] The embodiment of the present invention provides a vertical axis guide rail for ultra-precision grinding, which solves the technical problem of low precision of traditional vertical axis guide rails.

[0007] (2) Technical solution

[0008] The present invention provides a vertical axis guide rail for ultra-precision grinding, comprising a guide rail base, a linear guide rail, a workbench, a balancing device, a power-off protection device, a driving motor and a ball screw; the linear guide rail is slidably mounted on the guide rail base, the workbench is mounted on the linear guide rail and has a connection interface for mounting a component to be processed, the fixed end of the balancing device is fixed to the guide rail base, the movable end of the balancing device is connected to the workbench and is used to adjust the horizontality of the workbench; the driving motor is fixed to the guide rail base and its output shaft is connected to the ball screw to drive the ball screw to move, one end of the ball screw is mounted on the guide rail base and is used to drive the workbench to perform linear motion; one end of the power-off protection device is mounted on the ball screw, and the other end is rotatably mounted on the guide rail base, and is used to realize the release and locking of the linear guide rail.

[0009] Furthermore, the power-off protection device includes a ratchet, a ratchet pawl, a rotating shaft and a driving mechanism, the ratchet is fixed to the ball screw, the rotating shaft is installed on the guide rail base and passes through the ratchet pawl, the driving mechanism is installed on the guide rail base, and the output end of the driving mechanism is connected to one end of the ratchet pawl and is used to drive the ratchet pawl to rotate around the rotating shaft to achieve the release and locking of the ratchet.

[0010] Furthermore, the driving mechanism is a single-acting cylinder.

[0011] Furthermore, the balancing device is a double-acting cylinder, a cylinder seat of the double-acting cylinder is fixed on the guide rail base, and a cylinder rod of the double-acting cylinder is connected to the workbench.

[0012] Furthermore, the vertical axis guide rail for ultra-precision grinding also includes a connecting block, and the cylinder rod is connected to the workbench through the connecting block.

[0013] Furthermore, the vertical axis guide rail for ultra-precision grinding also includes a grating, and the grating includes a reading head and a grating scale. The reading head is fixed on the guide rail base, and the grating scale is fixed on the workbench.

[0014] Furthermore, the vertical axis guide rail for ultra-precision grinding also includes a coupling, and the output shaft of the drive motor is connected to the ball screw through the coupling.

[0015] Furthermore, the vertical axis guide rail for ultra-precision grinding processing also includes a screw seat, the ball screw is fixed to the guide rail base through the screw seat, and a rolling bearing is installed inside the screw seat.

[0016] Furthermore, the vertical axis guide rail for ultra-precision grinding processing also includes a motor seat, and the driving motor is fixed to the guide rail base through the motor seat.

[0017] Furthermore, the nut of the ball screw is fixed to the workbench.

[0018] (3) Beneficial effects

[0019] In summary, the present invention ensures a compact structure through a built-in balancing device, and uses a power-off protection device to realize the release and locking of the linear guide rail, and has the advantages of low cost, good rigidity, high precision and good reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a structural front view of a vertical axis guide rail for ultra-precision grinding provided by an embodiment of the present invention;

[0022] Figure 2 It is a right view of the structure of a vertical axis guide rail for ultra-precision grinding provided by an embodiment of the present invention;

[0023] Figure 3 yes Figure 1 AA surface section view in;

[0024] Figure 4 It is a top view of the structure of a vertical axis guide rail for ultra-precision grinding provided by an embodiment of the present invention;

[0025] Figure 5 The invention is a schematic diagram of the assembly structure of a power-off protection device for a vertical axis guide rail for ultra-precision grinding provided by an embodiment of the invention.

[0026] In the figure:

[0027] 1-guide rail base; 2-linear guide rail; 3-workbench; 4-balancing device; 401-cylinder seat; 402-cylinder rod; 5-power-off protection device; 501-ratchet; 502-ratchet claw; 503-rotating shaft; 504-driving mechanism; 6-driving motor; 7-ball screw; 8-grating; 801-reading head; 802-grating ruler; 9-coupling; 10-screw seat; 11-rolling bearing; 12-motor seat; 13-connecting block; 14-first fastener; 15-second fastener; 100-component to be processed. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present invention, but cannot be used to limit the scope of the present invention, that is, the present invention is not limited to the described embodiments, and covers any modification, replacement and improvement of parts, components and connection modes without departing from the spirit of the present invention.

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present invention are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. These are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "installation" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Figure 1 FIG. 1 is a schematic diagram of a vertical axis guide rail for ultra-precision grinding provided by an embodiment of the present invention. Figure 1 , 2 and 4, the vertical axis guide rail may include a guide rail base 1, a linear guide rail 2, a workbench 3, a balancing device 4, a power-off protection device 5, a drive motor 6 and a ball screw 7. The linear guide rail 2 is slidably mounted on the guide rail base 1, the workbench 3 is mounted on the linear guide rail 2 and has a connection interface for mounting the component to be processed 100, the fixed end of the balancing device 4 is fixed to the guide rail base 1, and the movable end of the balancing device 4 is connected to the workbench 3 and is used to adjust the horizontality of the workbench 3; the drive motor 6 is fixed to the guide rail base 1 and its output shaft is connected to the ball screw 7 to drive the ball screw 7 to move, one end of the ball screw 7 is mounted on the guide rail base 1 and is used to drive the workbench 3 to perform linear motion; one end of the power-off protection device 5 is mounted on the ball screw 7, and the other end thereof is rotatably mounted on the guide rail base 1, and is used to realize the release and locking of the linear guide rail 2.

[0033] In the above embodiment, the component to be processed 100 can be a tool shaft component, which is fixed to the workbench 3 by screws. The nut of the ball screw 7 is fixed to the workbench 3, the guide rail base 1 is used to support and fix the entire vertical guide rail, the linear guide rail 2 is fixed to the guide rail base 1 by a first fastener 14 (screws can be used), and the workbench 3 is mounted on the linear guide rail 2 by a second fastener 15 (screws can also be used). Among them, the balancing device 4 can specifically adopt a double-acting cylinder, the cylinder seat 401 of the double-acting cylinder is fixed to the guide rail base 1, and the cylinder rod 402 of the double-acting cylinder is connected to the workbench 3. The vertical axis guide rail for ultra-precision grinding also includes a connecting block 13, and the cylinder rod 402 is connected to the workbench 3 through the connecting block 13.

[0034] As an optional implementation, Figure 5 As shown, the power-off protection device 5 includes a ratchet 501, a ratchet pawl 502, a rotary shaft 503 and a driving mechanism 504. The ratchet 501 is fixed to the ball screw 7. The rotary shaft 503 is installed on the guide rail base 1 and penetrates the ratchet pawl 502. The driving mechanism 504 is installed on the guide rail base 1. The output end of the driving mechanism 504 is connected to one end of the ratchet pawl 502 and is used to drive the ratchet pawl 502 to rotate around the rotary shaft 503 to achieve the release and locking of the ratchet 501. Among them, the ratchet 502 is fixed to the ball screw 7 through its center hole. The driving mechanism 504 is a single-acting cylinder. When the linear guide 2 works normally, the single-acting cylinder is opened, and the linear guide 2 can work normally. When there is an abnormal air pressure, abnormal telecommunication or the guide does not work, the single-acting cylinder performs a locking operation under the action of its internal spring, thereby achieving the locking of the workbench 3. Under the action of the power-off protection device 5, the guide rail is braked to ensure that the linear guide rail 2 is quickly locked and the workbench 3 does not slide down, thereby avoiding damage to the vertical axis guide rail and the tool shaft installed on the workbench 3.

[0035] As an optional implementation, Figure 2 As shown, the vertical axis guide rail for ultra-precision grinding also includes a grating 8, which includes a reading head 801 and a grating scale 802. The reading head 801 is fixed on the guide rail base 1, and the grating scale 802 is fixed on the workbench 3. The two are used together to complete the precise measurement of the vertical movement distance of the workbench 3.

[0036] As an optional implementation, Figure 3 As shown, the vertical axis guide rail for ultra-precision grinding also includes a coupling 9, and the output shaft of the drive motor 6 is connected to the ball screw 7 through the coupling 9. The setting of the coupling 9 can output the power and torque of the drive motor 6 and play an overload protection role.

[0037] As an optional implementation, Figure 3As shown, the vertical axis guide rail for ultra-precision grinding processing also includes a screw seat 10, and the ball screw 7 is fixed to the guide rail base 1 through the screw seat 10. A rolling bearing 11 is installed inside the screw seat 10 for guiding the rotation of the ball screw 7.

[0038] As an optional implementation, Figure 2 As shown, the vertical axis guide rail for ultra-precision grinding processing also includes a motor seat 12, and the driving motor 6 is fixed to the guide rail base 1 through the motor seat 12.

[0039] It should be clear that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. The present invention is not limited to the specific steps and structures described above and shown in the figures. In addition, for the sake of brevity, a detailed description of known methods and technologies is omitted here.

[0040] The above are only embodiments of the present application and are not limited to the present application. For those skilled in the art, the present application may have various changes and variations without departing from the scope of the present invention. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A vertical axis guide rail for ultra-precision grinding, characterized in that: It comprises a guide rail base (1), a linear guide rail (2), a workbench (3), a balancing device (4), a power-off protection device (5), a drive motor (6) and a ball screw (7); wherein: The linear guide rail (2) is slidably mounted on the guide rail base (1), the workbench (3) is mounted on the linear guide rail (2) and has a connection interface, the fixed end of the balancing device (4) is fixed to the guide rail base (1), and the movable end of the balancing device (4) is connected to the workbench (3) and is used to adjust the horizontality of the workbench (3); The driving motor (6) is fixed to the guide rail base (1) and its output shaft is connected to the ball screw (7) to drive the ball screw (7) to move; one end of the ball screw (7) is mounted on the guide rail base (1) and is used to drive the workbench (3) to perform linear motion; One end of the power-off protection device (5) is mounted on the ball screw (7), and the other end is rotatably mounted on the guide rail base (1) and is used to realize the release and locking of the linear guide rail (2).

2. The vertical axis guide rail for ultra-precision grinding according to claim 1, characterized in that: The power-off protection device (5) comprises a ratchet (501), a ratchet pawl (502), a rotating shaft (503) and a driving mechanism (504); the ratchet (501) is fixed to the ball screw (7); the rotating shaft (503) is mounted on the guide rail base (1) and penetrates the ratchet pawl (502); the driving mechanism (504) is mounted on the guide rail base (1); the output end of the driving mechanism (504) is connected to one end of the ratchet pawl (502) and is used to drive the ratchet pawl (502) to rotate around the rotating shaft (503) to achieve the release and locking of the ratchet (501).

3. The vertical axis guide rail for ultra-precision grinding according to claim 2, characterized in that: The driving mechanism (504) is a single-acting cylinder.

4. The vertical axis guide rail for ultra-precision grinding according to claim 1, characterized in that: The balancing device (4) is a double-acting cylinder, the cylinder seat (401) of the double-acting cylinder is fixed on the guide rail base (1), and the cylinder rod (402) of the double-acting cylinder is connected to the workbench (3).

5. The vertical axis guide rail for ultra-precision grinding according to claim 4, characterized in that: It also includes a connecting block (13), and the cylinder rod (402) is connected to the workbench (3) via the connecting block (13).

6. The vertical axis guide rail for ultra-precision grinding according to claim 1, characterized in that: It also includes a grating (8), wherein the grating (8) includes a reading head (801) and a grating ruler (802), wherein the reading head (801) is fixed on the guide rail base (1), and the grating ruler (802) is fixed on the workbench (3).

7. The vertical axis guide rail for ultra-precision grinding according to claim 1, characterized in that: It also includes a coupling (9), and the output shaft of the drive motor (6) is connected to the ball screw (7) through the coupling (9).

8. The vertical axis guide rail for ultra-precision grinding according to claim 1, characterized in that: It also comprises a screw seat (10), the ball screw (7) is fixed to the guide rail base (1) via the screw seat (10), and a rolling bearing (11) is installed inside the screw seat (10).

9. The vertical axis guide rail for ultra-precision grinding according to claim 1, characterized in that: It also comprises a motor seat (12), and the driving motor (6) is fixed to the guide rail base (1) via the motor seat (12).

10. The vertical axis guide rail for ultra-precision grinding according to claim 1, characterized in that: The nut of the ball screw (7) is fixed to the workbench (3).

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