Double-surface milling equipment for large workpiece

Abstract

The utility model relates to the technical field of workpiece milling processing, in particular to double-milling equipment for large workpieces, which comprises a horizontal conveying belt, a conveying frame body is arranged on the horizontal conveying belt, and two symmetrically arranged cushion blocks are arranged in the conveying frame body; the turnover moving structure is located on one side of the horizontal conveying belt, and the turnover moving structure can drive the position of the workpiece to move to the conveying frame body; the top limiting structure is arranged on the conveying frame body, and the top limiting structure is used for fixing the top of the workpiece; the side limiting structure is located on the other side of the horizontal conveying belt. And the double-milling surface structure is positioned in the middle position of the horizontal conveying belt. Two faces can be machined at the same time, and the clamping frequency is reduced; the machining precision is guaranteed, the form and location tolerance between the surfaces is better controlled, accumulative errors are reduced, and the surface quality consistency of workpieces is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to face milling technical field, especially, relate to a double face milling equipment of large workpiece. BACKGROUND

[0002] Milling is a metal processing technology, mainly using milling machine through milling cutter to workpiece surface cutting processing, to obtain the required plane shape, size accuracy and surface roughness. Milling machine is a common machine tool, its cutter can move along different coordinate axis direction while rotating, thereby removing material on workpiece surface with the continuous development of industry, such as shipbuilding, large power equipment production, heavy machinery manufacturing and other industries, the demand for large workpiece is increasing. In shipbuilding, large marine crankshaft, ship plate and other components need to be processed with high-precision double surface. During processing, the workpiece needs to be milled.

[0003] However, the existing workpiece milling equipment can only mill one side of the workpiece and then flip the other side of the workpiece for milling work, which may result in difficulty in achieving high precision requirements for parallelism, perpendicularity and other form and position tolerances between the two machined surfaces.

[0004] Therefore, a double face milling equipment for workpiece is needed. INVENTION CONTENTS

[0005] The utility model embodiment provides a double face milling equipment of large workpiece, and the specific technical scheme is:

[0006] The utility model embodiment adopts the following technical scheme: a double face milling equipment of large workpiece, including horizontal conveying belt, the horizontal conveying belt is horizontally arranged;The horizontal conveying belt is equipped with conveying frame body, the conveying frame body is equipped with two symmetrical pad blocks;The overturning movement structure is located at one side of the horizontal conveying belt, and the overturning movement structure can drive the position of the workpiece to move to the conveying frame body;The top limiting structure is arranged on the conveying frame body, and the top limiting structure is used for fixing the top of the workpiece;The side limiting structure is located at the other side of the horizontal conveying belt;And the double face milling structure is located at the middle position of the horizontal conveying belt.

[0007] Further, the overturning movement structure includes a base, the base is equipped with two symmetrical slide rails, two slide rails are equipped with slide frames matched with them, the base is equipped with two symmetrical movement oil cylinders, the slide frame is connected with the telescopic end of two movement oil cylinders.

[0008] Further, the slide is equipped with a turnover frame which is rotationally connected with the slide, two limiting blocks are arranged at one end of the top of the turnover frame, a plurality of stand plates are arranged at the other end of the top of the turnover frame at equal intervals, a fixing block is arranged on the stand plate, and a turnover oil cylinder is hingedly arranged on the side wall of the slide, and the telescopic end of the turnover oil cylinder is hingedly connected with the side wall of the turnover frame.

[0009] Further, the top limiting structure comprises a plurality of top limiting cylinders which are arranged at equal intervals on the conveying frame body, and a top limiting head is arranged on the telescopic end of each top limiting cylinder.

[0010] Further, the side limiting structure comprises two symmetrically arranged side limiting members, each side limiting member comprises a limiting seat, a side limiting cylinder is arranged on the limiting seat at intervals, and a side fixing head is arranged on the telescopic end of the side limiting cylinder.

[0011] Further, the double-milling surface structure comprises milling surface seats which are symmetrically arranged on both sides of the horizontal conveying belt, a motor seat is arranged on the milling surface seat, a milling surface motor, a shaft coupling and a milling surface cutter are arranged on the motor seat, the shaft coupling is concentrically connected in transmission with the milling surface motor, the milling surface cutter is connected in transmission with the shaft coupling, a chip suction cover is arranged on the side of the milling surface seat, and the milling surface cutter rotates in the chip suction cover.

[0012] Beneficial effects: the utility model discloses first through large -scale crane and hoist the work piece horizontally to the turnover mobile structure, and then the turnover mobile structure work moves and overturns the work piece to the two cushion blocks on the conveying frame body and realizes the feeding, when feeding, the side limiting structure can limit and fix the side position of the feeding work piece, so that the work piece is accurately fed to the two cushion blocks, then the top limiting structure fixes the top of the work piece, and the horizontal conveying belt drives the position of the conveying frame body to move to the double-milling surface structure, so that the two faces of the work piece on the conveying frame body are milled through the double-milling surface structure work, the machining efficiency can be provided, two faces can be machined simultaneously, and the clamping frequency is reduced, the machining precision is guaranteed, the form tolerance between surfaces is better controlled, and the cumulative error is reduced and the work piece surface quality consistency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the first three-dimensional structure schematic view of the utility model;

[0014] Figure 2 It is the second three-dimensional structure schematic view of the utility model;

[0015] Figure 3 It is the three-dimensional structure schematic view of the turnover mobile structure of the utility model;

[0016] Figure 4The utility model discloses a conveying frame body and the top limiting structure's three-dimensional structure schematic view;

[0017] Figure 5 The utility model discloses a side limiting piece's three-dimensional structure schematic view;

[0018] Figure 6 The utility model discloses a double milling surface structure's three-dimensional structure schematic view;

[0019] Drawings

[0020] Horizontal conveying belt 1, conveying frame body 11, cushion block 12, turnover movement structure 2, base 21, slide rail 22, sliding frame 23, movement oil cylinder 24, turnover frame 25, limiting block 26, vertical board 27, fixed block 28, turnover oil cylinder 29, top limiting structure 3, top limiting cylinder 31, top limiting head 32, side limiting structure 4, side limiting piece 40, limiting seat 41, side limiting cylinder 42, side fixed head 43, double milling surface structure 5, milling surface seat 51, motor seat 52, milling surface motor 53, coupling 54, milling surface cutterhead 55, chip suction cover 56. Specific implementation

[0021] The embodiments of the present disclosure are further described in detail below in combination with the drawings and examples. The detailed description of the following examples and drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure, and the present disclosure can be implemented in many different forms, and is not limited to the specific examples disclosed in the text, but includes all technical solutions falling within the scope of the claims.

[0022] Reference Figures 1 to 6 As shown in the utility model embodiment provides a double milling surface equipment design of large workpiece, including horizontal conveying belt 1, the horizontal conveying belt 1 is horizontally arranged;The horizontal conveying belt 1 is equipped with conveying frame body 11, the conveying frame body 11 is equipped with two symmetrical cushion block 12 of setting;Turnover movement structure 2, the turnover movement structure 2 is located in the one side of horizontal conveying belt 1, the turnover movement structure 2 can drive the position of workpiece to move to conveying frame body 11;Top limiting structure 3, the top limiting structure 3 is set up on conveying frame body 11, and the top limiting structure 3 is used for fixing the top of workpiece;Side limiting structure 4, the side limiting structure 4 is located in the other side of horizontal conveying belt 1;And double milling surface structure 5, the double milling surface structure 5 is located at the middle position of horizontal conveying belt 1.

[0023] In use, first of all, the workpiece is hoisted horizontally to the turnover moving structure 2 by a large crane, and then the turnover moving structure 2 works to move and turn the workpiece to the two pads 12 on the conveying frame body 11 to realize feeding. When feeding, the side limiting structure 4 can limit and fix the side position of the feeding workpiece, so that the workpiece is accurately fed to the two pads 12, and then the top limiting structure 3 fixes the top of the workpiece. The horizontal conveying belt 1 drives the position of the conveying frame body 11 to move to the double-milling surface structure 5, so that the double-milling surface structure 5 works to mill the two surfaces of the workpiece on the conveying frame body 11, which can provide processing efficiency, simultaneously process two surfaces, reduce clamping times, ensure processing accuracy, better control the form and position tolerance between surfaces, and reduce cumulative error and improve workpiece surface quality consistency.

[0024] Preferably, the turnover moving structure 2 comprises a base 21, two symmetrically arranged slide rails 22 are arranged on the base 21, two slide rails 22 are provided with slide racks 23 in sliding fit, two symmetrically arranged moving oil cylinders 24 are arranged on the base 21, and the slide racks 23 are connected with the telescopic ends of the two moving oil cylinders 24; a turnover frame 25 is rotatably connected to the slide rack 23, two limiting blocks 26 are arranged at one end of the top of the turnover frame 25, a plurality of stand plates 27 are arranged at the other end of the other side of the top of the turnover frame 25 at equal intervals, a fixing block 28 is arranged on the stand plate 27, and a turnover oil cylinder 29 is hingedly arranged on the side wall of the slide rack 23. The telescopic end of the turnover oil cylinder 29 is hingedly connected with the side wall of the turnover frame 25.

[0025] When feeding the workpiece, the workpiece is horizontally placed between the two limiting blocks 26 and the plurality of fixing blocks 28, and then the two moving oil cylinders 24 work simultaneously to drive the slide rack 23 to move on the two slide rails 22, the position of the slide rack 23 is moved to the conveying frame body 11, and then the two turnover oil cylinders 29 work simultaneously to drive the turnover frame 25 to turn on the slide rack 23, so that the turnover frame 25 rotates from a horizontal state to a vertical state, so that the workpiece rotates from a horizontal state to a vertical state, and the workpiece is turned to the conveying frame body 11, thereby realizing automatic feeding of the workpiece.

[0026] Preferably, the top limiting structure 3 comprises a plurality of top limiting cylinders 31 arranged at equal intervals on the conveying frame body 11, and a top limiting head 32 is arranged on the telescopic end of each top limiting cylinder 31.

[0027] After the workpiece is fed and moved to the two pads 12 on the conveying frame body 11, the plurality of top limiting cylinders 31 simultaneously move downward to drive the plurality of top limiting heads 32 to move downward, respectively, to limit and fix each position of the top of the workpiece, so as to prevent displacement of the workpiece during milling, thereby affecting the accuracy of milling.

[0028] Preferably, the side limiting structure 4 comprises two symmetrically arranged side limiting members 40, each of which comprises a limiting seat 41, on which a pair of side limiting air cylinders 42 are arranged in an upper-lower interval, and a side fixing head 43 is arranged on the telescopic end of each side limiting air cylinder 42.

[0029] Before the workpiece is loaded onto the two pads 12 of the conveying frame body 11, the two side limiting air cylinders 42 on each limiting seat 41 work simultaneously to drive the positions of the two side fixing heads 43 to move simultaneously, and the positions of the two side fixing heads 43 are moved to the side of the conveying frame body 11, so that when the workpiece is loaded, the workpiece is at the center position of the two pads 12 on the conveying frame body 11, and in the subsequent double-milling process, no error is caused on the two sides of the workpiece during milling, which affects the accuracy of milling.

[0030] Preferably, the double-milling structure 5 comprises a milling seat 51 symmetrically arranged on both sides of the horizontal conveying belt 1, a motor seat 52 is arranged on the milling seat 51, a milling motor 53, a shaft coupling 54 and a milling cutter 55 are arranged on the motor seat 52, the shaft coupling 54 and the milling motor 53 are concentrically connected in transmission, the milling cutter 55 and the shaft coupling 54 are connected in transmission, a chip suction cover 56 is arranged on the side of the milling seat 51, and the milling cutter 55 rotates in the chip suction cover 56.

[0031] When the workpiece is milled, the milling motor 53 works to drive the shaft coupling 54 to rotate and thus drive the milling cutter 55 to rotate in the chip suction cover, so as to mill the side wall of the workpiece. When milling, the horizontal conveying belt 1 works to drive the workpiece on the conveying frame body 11 to move forward, so as to mill the two sides of the workpiece comprehensively;

[0032] Double-milling processing reduces the clamping frequency and thus reduces the auxiliary time caused by clamping. Each clamping not only needs to spend time to position and clamp the workpiece, but also may introduce positioning error during clamping. For large workpieces, the positioning accuracy after frequent clamping is difficult to guarantee, and the double-milling processing method avoids the precision loss and time waste caused by multiple clamping;

[0033] Better control of the shape and position tolerance between surfaces: In double-milling surface processing, since two surfaces are processed at the same time or in the same clamping state, the parallelism, perpendicularity and other shape and position tolerances between the two surfaces can be better controlled. For example, when processing a high-precision mold base, the double-milling surface equipment can ensure that the parallelism of the upper and lower surfaces of the base meets the high precision requirements. If the two surfaces are processed separately, due to clamping errors and other factors, it is difficult to ensure that the parallelism of the two surfaces is within a very small tolerance range (such as ±0.01mm), while double-milling surface processing can control the parallelism error within a smaller range.

[0034] Reduce cumulative error: Traditional single-milling surface processing methods produce certain errors during each clamping and processing when processing multiple surfaces, and these errors accumulate. Double-milling surface processing is performed in the same clamping, avoiding the cumulative error caused by multiple clamping and processing. For example, when processing a complex mechanical part frame, the dimensional accuracy and positional accuracy between multiple surfaces are very high, and double-milling surface processing can effectively reduce the cumulative error between these surfaces and improve the overall machining accuracy of the part.

[0035] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only to explain the principles of the present application, and cannot be interpreted in any way as a limitation on the scope of protection of the present application. Based on the explanations here, those skilled in the art can think of other specific embodiments of the present application without having to exert creative effort, and these embodiments will fall within the scope of protection of the claims of the present application.

Claims

1. A double-sided milling apparatus for large workpieces, characterized in that, Including horizontal conveying belt (1), the horizontal conveying belt (1) is horizontally arranged;The conveying frame body (11) is arranged on the horizontal conveying belt (1), and two symmetrically arranged cushion blocks (12) are arranged in the conveying frame body (11); The turnover moving structure (2) is located on one side of the horizontal conveying belt (1), and the turnover moving structure (2) can drive the position of the workpiece to move to the conveying frame body (11); The top limiting structure (3) is arranged on the conveying frame body (11), and the top limiting structure (3) is used for fixing the top of the workpiece; The side limiting structure (4) is located on the other side of the horizontal conveying belt (1); And the double milling surface structure (5) is located at the middle position of the horizontal conveying belt (1).

2. A dual-surface milling apparatus for large workpieces as defined in claim 1, characterized in that: The turnover moving structure (2) comprises a base (21), two symmetrically arranged slide rails (22) are arranged on the base (21), two slide rails (22) are provided with a sliding fit with the slide rails (22), Two symmetrically arranged moving oil cylinders (24) are arranged on the base (21), and the slide (23) is connected with the telescopic ends of the two moving oil cylinders (24).

3. A dual-surface milling apparatus for large workpieces as defined in claim 2, wherein: The slide (23) is provided with a turnover frame (25) rotatably connected thereto, One end of the top of the turnover frame (25) is provided with two limiting blocks (26), and the other end of the top of the turnover frame (25) is provided with a plurality of equally spaced vertical plates (27), The vertical plate (27) is provided with a fixing block (28), and the side wall of the slide (23) is provided with a hinge turnover oil cylinder (29), and the telescopic end of the turnover oil cylinder (29) is hinged with the side wall of the turnover frame (25).

4. The dual-surface milling apparatus for large workpieces of claim 1, wherein: The top limiting structure (3) comprises a plurality of top limiting cylinders (31) arranged at equal intervals on the conveying frame body (11), and a top limiting head (32) is arranged on the telescopic end of each top limiting cylinder (31).

5. The dual-surface milling apparatus for large workpieces of claim 1, wherein: The side limiting structure (4) comprises two symmetrically arranged side limiting members (40), each side limiting member (40) comprises a limiting seat (41), The limiting seat (41) is provided with a side limiting cylinder (42) arranged at equal intervals, and a side fixing head (43) is arranged on the telescopic end of the side limiting cylinder (42).

6. The dual-surface milling apparatus for large workpieces of claim 1, wherein: The double milling surface structure (5) comprises a milling surface seat (51) symmetrically arranged on both sides of the horizontal conveying belt (1), and a motor seat (52) is arranged on the milling surface seat (51), The motor seat (52) is provided with a milling surface motor (53), a shaft coupling (54) and a milling surface cutter (55), the shaft coupling (54) and the milling surface motor (53) are concentrically connected, and the milling surface cutter (55) and the shaft coupling (54) are connected, The side of the milling surface seat (51) is provided with a chip suction cover (56), and the milling surface cutter (55) rotates in the chip suction cover (56).

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