High-precision machining planer type milling machine

Abstract

The utility model provides a planer type milling machine for high-precision machining, which relates to the technical field of planer type milling machines and comprises a main base, an upper portal frame and an upper moving frame, the upper portal frame horizontally slides on the top of the main base, the upper moving frame is arranged on the upper portion of the upper portal frame, and a middle working table board slides in the middle of the main base. Side slag baffles are fixed to the positions, on the two sides of the middle working table top, of the main base, middle telescopic protection pipes are fixed to the two sides of the middle working table top, a lower fine lead screw is rotationally arranged in the middle of the main base, and a lower rapid lead screw is rotationally arranged on one side of the main base. The upper portal frame horizontally and rapidly moves through the lower rapid lead screw, the lower fine lead screw controls low-speed moving adjustment of the middle working table during machining, the moving speed during part replacement is guaranteed, high precision during machining can be guaranteed, and the problems that due to a precision ball screw, the moving speed is lower, and machining precision is poor are solved. And a long time is needed to wait for the planer type milling machine to move and return when the part is replaced, so that the part replacement time is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry milling machine equipment, in particular to a high-precision machining gantry milling machine. Background Art

[0002] Gantry milling machine is a large CNC milling machine with a portal frame structure. Gantry milling machine is suitable for processing large workpieces such as parts in mold manufacturing, automobile manufacturing, heavy machinery and other industries.

[0003] Gantry milling machines are generally moved by ball screws. After the gantry milling machine completes processing, the door frame and other parts of the gantry milling machine need to be moved to one side to leave space for hoisting the processed parts. In order to ensure processing accuracy, a higher level of ball screws will be used. However, high-precision ball screws will result in slower movement speeds. When replacing parts, it takes a long time to wait for the gantry milling machine to move back to its position, which prolongs the time for part replacement. Summary of the invention

[0004] The disclosed embodiment relates to a high-precision machining gantry milling machine, in which an upper gantry is moved horizontally and rapidly by a lower fast lead screw, and a lower fine lead screw controls the slow movement and adjustment of a middle work table during machining, eliminating the need for a deceleration mechanism, thereby ensuring both the movement speed during parts replacement and the high precision during machining.

[0005] According to a first aspect of the present disclosure, a high-precision gantry milling machine is provided, which specifically comprises: a main base, an upper gantry and an upper moving frame, wherein an upper gantry is horizontally slidably arranged on the top of the main base, an upper moving frame is arranged on the upper part of the upper gantry, a middle working table is slidably arranged in the middle part of the main base, side slag baffles are fixed on both sides of the middle working table of the main base, a middle telescopic protection tube is fixed on both sides of the middle working table, the middle telescopic protection tube is composed of a plurality of rectangular tube sliding sets, the tail end of the middle telescopic protection tube is fixed to the main base, two side corrugated protection tubes are arranged opposite to each other on one side of the main base, a lower fine lead screw is rotated on the middle top protrusion of the top protrusion of the main base, a lower fast lead screw is rotated on the top protrusion of one side of the main base, the lower fast lead screw and the lower fine lead screw are ball screw structures and are driven to rotate by a motor.

[0006] In at least some embodiments, the lower fine screw is screwed to the middle work table, the lower fast screw is screwed to the upper gantry, the middle telescopic protection tube covers the outside of the lower fine screw, and the side corrugated protection tube covers the outside of the lower fast screw, and the side corrugated protection tube protects the lower fast screw and the lower fine screw inside.

[0007] In at least some embodiments, a vertical fast lead screw is provided for rotating on the side of the upper gantry, the vertical fast lead screw is screwed to the upper cross frame, the upper cross frame and the upper gantry are vertically slidably connected, and a horizontal fast lead screw is provided for rotating on the top of the upper cross frame, both the vertical fast lead screw and the horizontal fast lead screw are ball screw structures and are driven to rotate by a motor.

[0008] In at least some embodiments, a lower lifting frame slides vertically at the bottom of the upper movable frame, a horizontal fine screw rotates at the rear of the upper movable frame, a horizontal fine screw rotates at the front of the lower lifting frame, and a milling head module slides horizontally at the front of the lower lifting frame.

[0009] In at least some embodiments, the horizontal fine screw is screwed to the lower lifting frame, and the horizontal fine screw is screwed to the rear of the milling head module. The horizontal fine screw rotates to guide the milling head module to move horizontally, and the vertical fine screw and the horizontal fine screw perform high-precision movement control during the milling head module processing process.

[0010] In at least some embodiments, a pin hole is opened on the inner side of the lower part of the upper gantry, and a fixed pin is slidably inserted into the pin hole. The fixed pin and the middle scraper plate slide through, and the bristles on the lower part of the middle scraper plate fit with the middle work table and the top of the side slag baffle plate, and the middle scraper plate moves synchronously with the upper gantry.

[0011] In at least some embodiments, the upper movable frame is threadedly connected to the horizontal fast lead screw, the upper movable frame is horizontally slidably connected to the upper cross frame, the horizontal fast lead screw rotates to guide the upper movable frame to move horizontally along the upper cross frame, and the upper movable frame and the milling head module are synchronously and rapidly displaced horizontally to one side.

[0012] The utility model provides a high-precision machining gantry milling machine, which has the following beneficial effects:

[0013] The upper gantry moves horizontally quickly through the lower fast lead screw, and the lower fine lead screw controls the slow movement and adjustment of the work table during processing, eliminating the need for a deceleration mechanism, which can ensure both the moving speed during part replacement and the high precision during processing.

[0014] The vertical fast lead screw and the horizontal fast lead screw control the rapid lifting and horizontal movement of the milling head module, which speeds up the lifting and moving of the milling head module to one side after the parts are processed, provides space for the lifting and replacement of parts, and shortens the waiting time for the milling head module to lift and move to one side.

[0015] The vertical fine screw and the horizontal fine screw are used for fine movement control of the milling head module during processing, which ensures the processing accuracy of the milling head module on parts and can also eliminate the configuration of the reduction mechanism and eliminate the cost and maintenance of the reduction mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0017] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0018] In the attached picture:

[0019] Figure 1 A schematic diagram showing the overall structure of the present application;

[0020] Figure 2 A schematic diagram showing the main base structure of the present application is shown;

[0021] Figure 3 A schematic diagram of the upper mobile frame structure of the present application is shown;

[0022] Figure 4 A schematic diagram of the lower fine screw structure of the present application is shown;

[0023] Figure 5 The schematic diagram of the structure of the upper gantry of the present application is shown;

[0024] Figure 6 A schematic diagram showing the structure of the split state of the present application;

[0025] Reference numerals list

[0026] 1. Main base; 101. Middle working table; 102. Side slag plate; 103. Middle telescopic protection tube; 104. Side corrugated protection tube; 105. Lower fast lead screw; 106. Lower fine lead screw;

[0027] 2. Upper gantry; 201. Vertical fast lead screw; 202. Upper cross frame; 203. Horizontal fast lead screw; 204. Pin hole; 205. Middle scraper plate; 206. Fixed pin;

[0028] 3. Upper moving frame; 301. Lower lifting frame; 302. Vertical fine screw; 303. Horizontal fine screw; 304. Milling head module. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of 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.

[0030] Example 1: Please refer to Figures 1 to 6 :

[0031] The utility model proposes a high-precision machining gantry milling machine, comprising: a main base 1, an upper gantry frame 2 and an upper moving frame 3, a middle working table 101 is slidably arranged in the middle of the main base 1, side slag blocking plates 102 are fixed on both sides of the middle working table 101 of the main base 1, a middle telescopic protection tube 103 is fixed on both sides of the middle working table 101, the middle telescopic protection tube 103 is composed of a plurality of rectangular tube sliding sets, the tail end of the middle telescopic protection tube 103 is fixed to the main base 1, two side corrugated protection tubes 104 are arranged opposite to each other on one side of the main base 1, a lower fine lead screw 106 is rotated on the middle top protrusion of the top protrusion of the main base 1, A lower fast lead screw 105 is rotated on the top convex block on one side of the main base 1. The lower fast lead screw 105 and the lower fine lead screw 106 are ball screw structures and are driven to rotate by a motor. The lower fine lead screw 106 is screwed to the middle work table 101, and the lower fast lead screw 105 is screwed to the upper gantry 2. The middle telescopic protection tube 103 covers the outer side of the lower fine lead screw 106, and the side corrugated protection tube 104 covers the outer side of the lower fast lead screw 105. The side corrugated protection tube 104 protects the lower fast lead screw 105 and the lower fine lead screw 106 inside to prevent metal scraps from sticking to the lower fast lead screw 105 and the lower fine lead screw 106.

[0032] An upper gantry 2 is horizontally slidable on the top of the main base 1, and a vertical fast lead screw 201 is rotated on the side of the upper gantry 2. The vertical fast lead screw 201 is screwed to the upper cross frame 202, and the upper cross frame 202 is vertically slidably connected to the upper gantry 2. A horizontal fast lead screw 203 is rotated on the top of the upper cross frame 202. Both the vertical fast lead screw 201 and the horizontal fast lead screw 203 are ball screw structures and are driven to rotate by a motor. An upper moving frame 3 is arranged on the upper part of the upper gantry 2, and a lower lifting frame 301 is vertically slidable at the lower part of the upper moving frame 3, a horizontal fine lead screw 303 is rotated at the rear of the upper moving frame 3, a horizontal fine lead screw 303 is rotated on the front side of the lower lifting frame 301, and a milling head module 304 is horizontally slidable on the front side of the lower lifting frame 301.

[0033] In the disclosed embodiment, the horizontal fine screw 303 is screwed to the lower lifting frame 301, and the horizontal fine screw 303 is screwed to the rear of the milling head module 304. The horizontal fine screw 303 rotates to guide the milling head module 304 to move horizontally. The vertical fine screw 302 and the horizontal fine screw 303 perform high-precision mobile control during the processing of the milling head module 304, thereby ensuring the processing accuracy of the milling head module 304 on parts.

[0034] In the disclosed embodiment, a latch hole 204 is opened on the inner side of the lower part of the upper gantry 2, and a cylindrical fixed latch 206 is slidably inserted into the latch hole 204. The fixed latch 206 and the middle scraper plate 205 slide through, and the bristles on the lower part of the middle scraper plate 205 fit the middle work surface 101 and the top of the side slag baffle plate 102. The middle scraper plate 205 moves synchronously with the upper gantry 2, and the middle scraper plate 205 scrapes away the iron filings on the middle work surface 101 and the surface of the parts, thereby reducing the cleaning operations of personnel.

[0035] In the disclosed embodiment, the upper movable frame 3 and the horizontal fast lead screw 203 are screwed together, the upper movable frame 3 and the upper cross frame 202 are horizontally slidably connected, the horizontal fast lead screw 203 rotates to guide the upper movable frame 3 to move horizontally along the upper cross frame 202, and the upper movable frame 3 and the milling head module 304 are synchronously and quickly displaced horizontally to one side, making space for the lifting, movement and replacement of parts.

[0036] Embodiment 2, on the basis of embodiment 1, a bracket is slid on the top of the middle scraper plate 205 through a spring, the bracket tube passes through the fixed pin 206 and the pin hole 204, the bracket supports the middle scraper plate 205 to slide downward through the spring, the middle scraper plate 205 maintains sliding fit with the top of the middle work table 101 and the side slag plate 102, improves the effect of pushing the top metal residue to move, and reduces the residue residue.

[0037] The working principle of this embodiment is as follows: the upper gantry 2 moves horizontally along the slide rail on the top of the main base 1, the lower fast lead screw 105 and the vertical fast lead screw 201 and the horizontal fast lead screw 203 are of C0 level accuracy, C0 level has low accuracy and fast moving speed, the lower fine lead screw 106 and the vertical fine lead screw 302 and the horizontal fine lead screw 303 are of C3 level with higher accuracy, C3 level has higher accuracy and slow moving speed, the upper gantry 2 realizes rapid horizontal movement through the rotation of the lower fast lead screw 105, the lower fine lead screw 106 rotates to control the slow speed and higher precision movement adjustment of the working table 101 during processing, the coordinated use of the lower fast lead screw 105 and the lower fine lead screw 106 eliminates the need for the setting of a deceleration mechanism, and the lower fast lead screw 1 The cooperation between the lower fast lead screw 105 and the lower fine lead screw 106 can not only ensure the rapid speed to make room when replacing parts, but also ensure the high moving precision during the processing. The lower fast lead screw 105 and the lower fine lead screw 106 are respectively wrapped by the middle telescopic protection tube 103 and the side corrugated protection tube 104. The middle telescopic protection tube 103 and the side corrugated protection tube 104 are compressed or expanded with the movement of the middle work table 101 and the upper gantry 2. The middle telescopic protection tube 103 and the side corrugated protection tube 104 protect the lower fast lead screw 105 and the lower fine lead screw 106 inside to avoid the adhesion of metal scraps and the lower fast lead screw 105 and the lower fine lead screw 106. The side slag plate 102 also prevents the residue from splashing toward the top of the lower side corrugated protection tube 104.

[0038] The vertical fast lead screw 201 rotates to carry out the vertical lifting and lowering operation of the upper moving frame 3 along the upper gantry 2, the upper gantry 2 and the upper moving frame 3 and the milling head module 304 are synchronously and rapidly lifted and lowered, the horizontal fast lead screw 203 rotates to guide the upper moving frame 3 to move horizontally along the upper cross frame 202, the upper moving frame 3 and the milling head module 304 are synchronously and rapidly displaced horizontally, the vertical fast lead screw 201 and the horizontal fast lead screw 203 control the rapid lifting and horizontal movement of the milling head module 304, the milling head module 304 is connected to the milling cutter to rotate to process the parts, and the speed at which the milling head module 304 is lifted and moved to one side after the parts are processed is accelerated, so as to make room for the lifting and replacement of the parts and shorten the waiting time for the milling head module 304 to be lifted and moved to one side;

[0039] The rotation of the vertical fine screw 302 guides the lower lifting frame 301 to move vertically, and the lower lifting frame 301 and the milling head module 304 move vertically synchronously. The rotation of the horizontal fine screw 303 guides the milling head module 304 to move horizontally. The vertical fine screw 302 and the horizontal fine screw 303 perform high-precision mobile control during the processing of the milling head module 304, thereby ensuring the processing accuracy of the milling head module 304 on parts, and also eliminating the configuration of the deceleration mechanism, eliminating the cost of the deceleration mechanism and subsequent maintenance. The middle scraper plate 205 moves synchronously with the upper gantry 2, and the middle scraper plate 205 scrapes off the iron filings on the middle work table 101 and the surface of the parts, thereby reducing the cleaning operations of the personnel. The middle scraper plate 205 is adjusted in height according to the sliding insertion of the pin holes 204 and the fixed pins 206 at different heights.

[0040] In this article, there are a few points to note:

[0041] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0042] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0043] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A high-precision machining gantry milling machine, comprising: A main base (1), an upper gantry (2) and an upper movable frame (3); characterized in that an upper gantry (2) is horizontally slidably mounted on the top of the main base (1), an upper movable frame (3) is arranged on the upper part of the upper gantry (2), a middle working table (101) is slidably mounted in the middle of the main base (1), side slag baffles (102) are fixed on both sides of the middle working table (101) of the main base (1), middle telescopic protective tubes (103) are fixed on both sides of the middle working table (101), the tail end of the middle telescopic protective tube (103) is fixed to the main base (1), two side corrugated protective tubes (104) are arranged opposite to each other on one side of the main base (1), a lower fine screw (106) is rotatably mounted in the middle of the main base (1), and a lower fast screw (105) is rotatably mounted on one side of the main base (1).

2. A high-precision machining gantry milling machine according to claim 1, characterized in that: The lower fine lead screw (106) is screwed to the middle work surface (101), the lower fast lead screw (105) is screwed to the upper gantry (2), the middle telescopic protection tube (103) covers the outer side of the lower fine lead screw (106), and the side corrugated protection tube (104) covers the outer side of the lower fast lead screw (105).

3. A high-precision machining gantry milling machine according to claim 1, characterized in that: The upper gantry (2) is rotatably provided with a vertical fast lead screw (201) on the side, the vertical fast lead screw (201) is screwed to the upper cross frame (202), the upper cross frame (202) is vertically slidably connected to the upper gantry (2), and the top of the upper cross frame (202) is rotatably provided with a horizontal fast lead screw (203).

4. A high-precision machining gantry milling machine according to claim 1, characterized in that: A lower lifting frame (301) is vertically slidable at the lower part of the upper moving frame (3), a horizontal fine lead screw (303) is rotated at the rear part of the upper moving frame (3), a horizontal fine lead screw (303) is rotated at the front side of the lower lifting frame (301), and a milling head module (304) is horizontally slidable at the front side of the lower lifting frame (301).

5. A high-precision machining gantry milling machine according to claim 4, characterized in that: The horizontal fine lead screw (303) and the lower lifting frame (301) are screwed together, and the horizontal fine lead screw (303) and the rear of the milling head module (304) are screwed together.

6. A high-precision machining gantry milling machine according to claim 3, characterized in that: A latch hole (204) is provided on the inner side of the lower part of the upper gantry (2), a fixed latch (206) is slidably inserted into the latch hole (204), the fixed latch (206) and the middle scraper plate (205) are slidably penetrated, and the lower part of the middle scraper plate (205) is in contact with the middle work surface (101) and the top of the side slag blocking plate (102).

7. A high-precision machining gantry milling machine according to claim 6, characterized in that: The upper movable frame (3) and the horizontal fast lead screw (203) are screwed together, and the upper movable frame (3) and the upper horizontal frame (202) are horizontally slidably connected.

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