Horizontal ram straightening device

Abstract

A horizontal ram straightening device comprises a carriage and a ram in horizontal sliding fit with the carriage, and further comprises a sliding block, an included angle is formed between the moving track line of the sliding block and the moving track line of the ram, and the front end of the sliding block is connected with the front end of the ram through a connecting rod. The front end of the sliding block applies upward acting force to the front end of the ram, the acting force is gradually increased along with outward sliding of the sliding block, and the acting force enables the front end of the ram to be kept horizontal. When the ram needs to extend outwards to work, the sliding block and the ram move synchronously; due to the fact that the included angle is formed between the moving track line of the sliding block and the moving track line of the ram, the sliding block can apply upward acting force to the front end of the ram after outwards extending and moving. The upward acting force is just used for resisting and counteracting the downward bending tendency of the ram caused by the gravity of the ram. The inclination angle of the movement of the sliding block is elaborately designed, so that when the ram extends to different positions, the upward acting force is enough to straighten the front end of the ram and maintain the front end of the ram at an approximately horizontal position.

Description

Technical Field

[0001] The invention relates to a numerically controlled machine tool, in particular to a ram straightening device of a horizontal milling machine. Background Art

[0002] like Figure 1 As shown, in large horizontal machining centers or boring and milling machines, the horizontal ram 2, when extended from the carriage 1, experiences a downward droop due to gravity, severely impacting machining accuracy. Conventional solutions employ hydraulic compensation systems, which are complex and expensive to maintain. Therefore, a simple, real-time, and automatic straightening device is urgently needed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a horizontal slide straightening device with a simple structure, which can automatically compensate in real time to keep the front end of the slide horizontal, thereby significantly improving the positioning accuracy and processing accuracy of the machine tool during processing.

[0004] To address the above-mentioned technical problems, the present invention provides a technical solution: a horizontal ram straightening device comprising a carriage and a ram that slides horizontally with the carriage, and a slider. The slider's trajectory forms an angle with the ram's trajectory. The slider's front end is connected to the ram's front end via a connecting rod. The slider's front end exerts an upward force on the ram's front end, and the force gradually increases as the slider slides outward, thereby maintaining the ram's front end horizontal. The present invention operates according to the following principle: When the ram needs to extend outward for operation, the slider moves synchronously with the ram. Because the slider's trajectory forms an angle with the ram's trajectory, the slider exerts an upward force on the ram's front end after extending outward. This upward force serves to counteract and offset the ram's tendency to bend downward due to its own weight. By carefully designing the slider's tilt angle, this upward force is sufficient to straighten the ram's front end and maintain it in a nearly horizontal position when the ram is extended to different positions.

[0005] As an improvement, the front end of the slider is connected to the front end of the ram via a connecting rod.

[0006] As an improvement, the connecting rod and the slider are formed in one piece, or the connecting rod is connected to the slider via bolts, and the connecting rod is connected to the ram via bolts.

[0007] As an improvement, an upper slide rail is provided on the top of the drag plate, and the slider cooperates with the upper slide rail. The sliding surface of the slider is an inclined surface, and the inclined surface is inclined upward along the direction in which the slide extends outward.

[0008] As an improvement, the ram moves synchronously with the slider. After the slider and the ram slide out, the slider exerts an upward pulling force on the front end of the ram to keep the front end of the ram horizontal.

[0009] As improvement, the bottom of the drag plate is provided with a lower slide rail, the slide block is matched with the lower slide rail, the sliding surface of the slide block is inclined surface, and the inclined surface is inclined upward along the outward extending direction of the slide block.

[0010] As improvement, the slide block and the slide block are synchronous, and the slide block has upward supporting force to the front end of the slide block after the slide block and the slide block slide out, so that the front end of the slide block is kept horizontal.

[0011] As improvement, the front end of the slide block is provided with a machining head.

[0012] The present application has the following beneficial effects compared with the prior art: 1. Simple and reliable structure: using inclined surface, slide block, connecting rod and other basic mechanical elements, the structure is relatively simple, easy to manufacture and maintain; 2. Real-time automatic compensation: the straightening force is automatically generated during the extension of the slide block, and is synchronous with the displacement of the slide block, without the need for additional sensors or control systems; 3. Effective anti-sagging: directly acting on the front end of the slide block which is most prone to sagging, providing upward force, which can effectively resist the bending deformation caused by gravity; 4. Improve accuracy: by keeping the front end of the slide block horizontal, the positioning accuracy and machining accuracy of the machine tool during machining are significantly improved, especially when the slide block is extended for a long distance; 5. Good rigidity: using rigid connection, force transmission is direct, and the structure has good rigidity; 6. Real-time maintenance of the front end of the slide block, offsetting the huge pressure generated by the slide block on the front end of the drag plate, reducing the friction force on the slide block, and prolonging the service life of the slide block. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic diagram of sagging of the slide block of the prior art.

[0014] Figure 2 It is a schematic diagram of the slide block in the retracted state of example 1.

[0015] Figure 3 It is a schematic diagram of the slide block in the extended state of example 1.

[0016] Figure 4 It is a schematic diagram of the slide block in the extended state of example 2. DETAILED DESCRIPTION

[0017] The present application will be further described below in conjunction with the drawings of the specification. Example 1

[0018] As Figure 2 , 3As shown, a horizontal slide straightening device is applied to a horizontal milling machine, the horizontal milling machine comprises a column 3, a drag plate 1 arranged on the column 3 and a slide 2 horizontally slidingly matched with the drag plate 1. The drag plate 1 is rigidly connected with the column 3, and the drag plate 1 is provided with a sliding groove, and the slide 2 is arranged in the sliding groove and can horizontally slide forward and backward along the sliding groove. The length of the slide 2 is greater than the length of the drag plate 1, and a machining head 6 is arranged at the front end of the slide 2. The top surface of the drag plate 1 is provided with an upper sliding rail, and the sliding block is slidingly matched with the upper sliding rail, and the sliding block is equivalent to an inclined block, and the sliding surface of the sliding block is an inclined surface, and the inclined surface is inclined upward along the outward extending direction of the slide, and when the sliding block 4 moves along the inclined surface, the sliding block 4 will generate a vertical displacement relative to the slide. The front end of the sliding block 4 is connected with the front end of the slide 2 through a connecting rod 5; the connecting rod 5 is integrally formed with the sliding block 4, or the connecting rod 5 is connected with the sliding block 4 through bolts, and the connecting rod 5 is connected with the slide 2 through bolts, and the connecting rod 5 is a rigid connecting piece and can effectively convert the vertical movement of the sliding block 4 into a pulling force on the front end of the slide 2. The slide 2 and the sliding block 4 move synchronously, and after the sliding block 4 and the slide 2 slide out, the sliding block 4 has an upward pulling force on the front end of the slide 2 to keep the front end of the slide 2 horizontal.

[0019] The principle of the present application is that when the slide 4 needs to be extended outward for work, the sliding block 4 moves synchronously with the slide 2; because the trajectory line of the movement of the sliding block 4 and the trajectory line of the movement of the slide 2 form an included angle, after the sliding block 4 moves outward, it will exert an upward force on the front end of the slide 2, and the force is an upward pulling force; the upward force is used to resist and offset the downward bending tendency of the slide due to its own gravity. By carefully designing the inclination angle of the movement of the sliding block, it can be ensured that when the slide is extended to different positions, the upward force is sufficient to straighten the front end of the slide and maintain the front end of the slide in a nearly horizontal position. Example 2

[0020] As Figure 4As shown, a horizontal slide rest straightening device is applied to a horizontal milling machine, the horizontal milling machine comprises a column 3, a drag plate 1 arranged on the column 3 and a slide rest 2 horizontally slidingly matched with the drag plate 1. The drag plate 1 is rigidly connected with the column 3, and the drag plate 1 is provided with a sliding groove, and the slide rest 2 is arranged in the sliding groove and can horizontally slide forward and backward along the sliding groove. The length of the slide rest 2 is greater than the length of the drag plate 1, and a machining head 6 is arranged at the front end of the slide rest 2. The bottom surface of the drag plate 1 is provided with a lower sliding rail, and the sliding block is slidingly matched with the lower sliding rail, and the sliding block is equivalent to an inclined block, and the sliding surface of the sliding block is an inclined surface, and the inclined surface is inclined upward along the outward extending direction of the slide rest, and when the sliding block 4 moves along the inclined surface, the sliding block 4 will generate the displacement in the vertical direction of the slide rest. The front end of the sliding block 4 is connected with the front end of the slide rest 2 through a connecting rod 5; the connecting rod 5 is integrally formed with the sliding block 4, or the connecting rod 5 is connected with the sliding block 4 through bolts, and the connecting rod 5 is connected with the slide rest 2 through bolts, and the connecting rod 5 is a rigid connecting piece and can effectively convert the vertical movement of the sliding block 4 into the supporting force for the front end of the slide rest 2. The slide rest 2 moves synchronously with the sliding block 4, and after the sliding block 4 and the slide rest 2 slide out, the sliding block 4 has the upward supporting force for the front end of the slide rest 2, so that the front end of the slide rest 2 is kept horizontal.

[0021] The principle of the present application is that when the slide rest 4 needs to be extended outward for work, the sliding block 4 moves synchronously with the slide rest 2; because the trajectory line of the movement of the sliding block 4 and the trajectory line of the movement of the slide rest 2 form an included angle, after the sliding block 4 moves outward, the sliding block 4 will exert an upward force on the front end of the slide rest 2, and the force is the upward supporting force; the upward force is used to resist and offset the downward bending trend of the slide rest due to its own gravity. Through careful design of the inclination angle of the movement of the sliding block, it can be ensured that when the slide rest is extended to different positions, the upward force is sufficient to straighten the front end of the slide rest and maintain the front end of the slide rest in a position close to horizontal.

Claims

1. A horizontal ram straightening device, comprising a carriage and a ram that slides horizontally with the carriage, characterized in that: It also includes a slider, the trajectory of the slider movement is at an angle to the trajectory of the ram movement, the front end of the slider is connected to the front end of the ram through a connecting rod, the front end of the slider applies an upward force to the front end of the ram and the force gradually increases as the slider slides outward, and the force keeps the front end of the ram horizontal.

2. A horizontal ram straightening device according to claim 1, characterized in that: The connecting rod and the slider are integrally formed, or the connecting rod is connected to the slider via bolts, and the connecting rod is connected to the ram via bolts.

3. The horizontal ram straightening device according to claim 1, characterized in that: An upper slide rail is provided on the top of the drag plate, and the slider cooperates with the upper slide rail. The sliding surface of the slider is an inclined surface, and the inclined surface is inclined upward along the direction in which the ram extends outward.

4. A horizontal ram straightening device according to claim 3, characterized in that: The ram moves synchronously with the slider. After the slider and the ram slide out, the slider exerts an upward pulling force on the front end of the ram to keep the front end of the ram horizontal.

5. The horizontal ram straightening device according to claim 1, characterized in that: A lower sliding rail is provided at the bottom of the drag plate, and the slider cooperates with the lower sliding rail. The sliding surface of the slider is an inclined surface, and the inclined surface is inclined upward along the direction in which the ram extends outward.

6. The horizontal ram straightening device according to claim 5, characterized in that: The ram moves synchronously with the slider. After the slider and the ram slide out, the slider exerts an upward supporting force on the front end of the ram to keep the front end of the ram horizontal.

7. The horizontal ram straightening device according to claim 1, characterized in that: A processing head is provided at the front end of the ram.

Images