Milling and boring machine tool milling and boring shaft preparation combination device and operation method

Abstract

The invention relates to the field of heavy milling and boring machines, in particular to a milling and boring machine tool milling and boring shaft preparation combination device and an operation method. The problems that a milling and boring shaft of an existing milling and boring machine is long in penetrating operation time, the coaxiality of the milling and boring shaft is not easy to master, and the surface of the boring shaft is damaged are mainly solved. A rack (16) is fixed on the base (13), two supporting mechanisms capable of moving along the rack (16) are connected onto the rack (16), each supporting mechanism comprises a sliding seat (10), a gear shaft (18) is connected onto the sliding seat (10) through a bearing B (14), and a gear on the gear shaft (18) is meshed with the rack (16); the upper portion of the sliding seat (10) is connected with a height-adjustable support (5), the support (5) is connected with a rotatable idler wheel (1), and the rotation direction of the idler wheel (1) is consistent with the rotation direction of the gear shaft (18). The device is convenient to operate, the assembling efficiency and precision can be improved, the surface of the boring shaft is prevented from being damaged, and therefore the precision of a machine tool is improved.

Description

Technical Field

[0001] The invention relates to the field of heavy-duty milling and boring machines, in particular to a milling and boring spindle preparation and combination device of a milling and boring machine tool and an operation method thereof. Background Art

[0002] Heavy-duty CNC milling and boring machines are high-precision, high-efficiency processing equipment with a wide range of applications in the manufacturing field. The milling and boring spindle is a key core component and plays a vital role in the performance and processing quality of the entire equipment. The feed of the milling and boring spindle is responsible for realizing the precise positioning and feed movement of the workpiece during the processing process. Therefore, in the process of assembling the spindle of the milling and boring machine tool, the milling and boring spindle's installation clearance, straightness, cylindricity, coaxiality, etc. are particularly important. The stability and precision of the milling and boring spindle directly affect the processing accuracy of the parts. The boring spindle is an extra-long workpiece, and the clearance requirements with the milling spindle are strict. The concentricity and coaxiality with the milling spindle are difficult to grasp, and the on-site installation operation is inconvenient. The current installation operation uses a crane for hoisting and multiple workers for assistance. It takes a long time for the crane and takes more manpower. It is easy to cause damage to the surface of the boring spindle, which affects the accuracy and quality of the workpiece and reduces the service life of the machine tool. Summary of the invention

[0003] In order to overcome the shortcomings of the existing milling and boring machines, such as the long milling and boring shaft assembly operation process and the difficulty in controlling the coaxiality of the milling and boring shaft, which leads to damage to the boring shaft surface, the present invention provides a milling and boring shaft preparation assembly device and an operation method for a milling and boring machine tool. The milling and boring shaft preparation assembly device and the operation method for the milling and boring machine tool are easy to operate, can improve the efficiency and accuracy of assembly, avoid damage to the boring shaft surface, and thus improve the accuracy of the machine tool.

[0004] The technical solution of the present invention is: a milling and boring spindle preparatory combination device for a milling and boring machine tool, comprising a base, a rack fixed on the base, two supporting mechanisms that can move along the rack are connected to the rack, the supporting mechanism comprises a slide seat, the slide seat is connected to a gear shaft through a bearing B, and the gear on the gear shaft is meshed with the rack; the upper part of the slide seat is connected to a height-adjustable bracket, the bracket is connected to a rotatable roller, and the rotation direction of the roller is consistent with the rotation direction of the gear shaft.

[0005] Furthermore, the bracket is connected to the slide seat by a screw A; an adjusting screw is threadedly connected to the bracket, and the lower end of the adjusting screw is supported on the upper surface of the slide seat, and the adjusting screw is used to adjust the height of the bracket.

[0006] Furthermore, a roller shaft is fixed on the bracket, the axial direction of the roller shaft is parallel to the axial direction of the gear shaft, and the roller is connected to the roller shaft via a bearing A.

[0007] Furthermore, the end of the gear shaft is connected to a handle.

[0008] Furthermore, the bottoms of both sides of the slide seat are connected to a pressure plate via screws B, and the inner side of the pressure plate is located on the bottom surface of the top plate of the base.

[0009] Furthermore, there are two supporting mechanisms, and the boring spindle is placed on the two supporting mechanisms, wherein a baffle is fixed on the slide seat in the supporting mechanism far away from the milling spindle, and the height of the baffle is not lower than the upper edge of the roller.

[0010] An operating method of the milling and boring machine tool milling and boring spindle preparation and combination device comprises the following steps: S1. Place the milling shaft on the milling shaft platform, fix the base on the end of the milling shaft platform, and make the rack parallel to the milling shaft; S2, move the two supporting mechanisms to the two ends of the rack respectively, wherein the supporting mechanism with the baffle is located at the end away from the milling axis; S3, placing the boring spindle on the rollers of the two supporting mechanisms, and adjusting the heights of the brackets in the two supporting mechanisms so that the center of the boring spindle and the center of the milling spindle are at the same height; S4. Shake the handle of the support mechanism that drives the baffle, and the support mechanism moves forward along the rack, pushing the boring shaft into the milling shaft.

[0011] Furthermore, when adjusting the height of the bracket in step S3, the adjusting screw is rotated to adjust the length of the lower end of the adjusting screw extending out of the bottom of the bracket, thereby adjusting the height of the bracket.

[0012] The present invention has the following beneficial effects: due to the adoption of the above scheme, the boring shaft in the device is supported by rollers, and the supporting mechanism moves on the rack to drive the boring shaft to move forward, and the roller at the bottom of the boring shaft rotates during the movement of the boring shaft, thereby avoiding wear and scratches on the surface of the boring shaft; the operation process avoids occupying the overhead crane for a long time, does not require the assistance of multiple people, saves labor, and improves assembly efficiency; during the assembly process, the coaxiality of the boring shaft and the milling shaft can be adjusted in time to improve the assembly accuracy, thereby improving the stability of the milling and boring machine and the processing accuracy of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the present invention; Figure 2 is along Figure 1 Sectional view of AA in the middle; Figure 3 is along Figure 2 The P view in .

[0014] In the figure, 1- roller, 2- bearing A, 3- pressure cover, 4- roller shaft, 5- bracket, 6- round nut, 7- flange, 8- adjusting screw, 9- screw A, 10- fixed slide, 11- screw B, 12- pressure plate, 13- base, 14- bearing B, 15- tapered pin, 16- rack, 17- rack fixing screw, 18- gear shaft, 19- handle, 20- wrench, 21- baffle. DETAILED DESCRIPTION

[0015] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by “up”, “down”, “left”, “right”, “inside”, “outside”, “top”, “bottom”, etc. are all based on the directions or positional relationships shown in the accompanying drawings. The purpose is only to facilitate the description of the present invention and simplify the description. It does not indicate or imply that the referred parts must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0017] Depend on Figures 1 to 3 As shown, a milling and boring machine tool milling and boring shaft preparation and combination device includes a base 13, the base 13 is fixed on the foundation and is located at one end of the milling shaft platform, a rack 16 is fixed on the base 13, when the rack 16 is installed, it is first limited by the conical pin 15, and then fixed to the base 13 by the rack fixing screw 17. During the installation process, it should be ensured that the parallelism of the rack 16 and the milling shaft axis meets the requirements. The length of the rack 16 is consistent with the length of the base 13, and limit blocks are provided at both ends of the rack 16. Two support mechanisms that can move along the rack 16 are connected to the rack 16, and the support mechanism can move along the surface of the rack 16 and stay at any position thereon. The support mechanism supports the boring shaft to the same height as the milling shaft, and can drive the boring shaft to move forward, so as to enter the milling shaft.

[0018] In order to ensure that the support mechanism can move on the rack 16, the support mechanism includes a slide 10, which is placed on the base 13. The middle of the slide 10 is connected to the gear shaft 18 through the bearing B14. The gear on the gear shaft 18 is meshed with the rack 16, so that when the gear shaft 18 is rotated, the gear can roll along the rack 16, thereby driving the slide 10 and the support mechanism as a whole to move along the rack 16. The gear shaft 18 is located in the slide 10, and the end of the slide 10 is connected to the flange 7 by screws to limit the bearing B14 and the gear shaft 18. The end of the gear shaft 18 is connected to a wrench 20, which is perpendicular to the gear shaft 18, and the end of the wrench 20 is connected to a rotatable handle 19, and the gear shaft 18 can be driven to rotate by rotating the handle 19.

[0019] The bottom surfaces on both sides of the slide 10 are located on the base 13, and downwardly protruding ridges are provided on both sides of the bottom surface, and the ridges are located outside the base 13. The bottom of the ridges is connected to the pressure plate 12 by screws B11, and the inner side of the pressure plate 12 is on the bottom surface of the top plate of the base 13. When the screws B11 are tightened, the slide 10 is connected to the base 13, and the slide 10 can slide on the base 13 to form a guide rail between the two. At the same time, the pressure plate 12 can prevent the slide 10 from flipping over to ensure stability.

[0020] The upper part of the slide 10 is provided with a bracket 5, and the bracket 5 is connected to the slide 10 by screws A9. The screws A9 pass through the bracket 5 and are tightened on the slide 10, thereby fixing the bracket 5 to the slide 10. The screw holes on the slide 10 are arranged as Figure 2 The oblong hole in the left and right directions is shown, so that the position of the screw A9 in the screw hole can be adjusted, so that the position of the bracket 5 on the slide 10 can be fine-tuned. The bracket 5 is threadedly connected with the adjusting screw 8, and the lower end of the adjusting screw 8 is supported on the upper surface of the slide 10. By turning the adjusting screw 8 and adjusting the length of the adjusting screw 8 extending out of the bottom surface of the bracket, the height of the bracket 5 can be adjusted, thereby adjusting the height of the boring axis to ensure its coaxiality with the milling axis.

[0021] The bracket 5 includes a bottom plate and two vertical plates, the two vertical plates are respectively located on both sides of the bottom plate, and a roller shaft 4 is provided on the upper part of the two vertical plates. The roller shaft 4 is placed on the upper part of the vertical plate and fixed by a pressure cover 3. The axis direction of the roller shaft 4 is parallel to the axis direction of the gear shaft 18. A bearing A2 is provided in the middle of the roller shaft 4, and the bearing A2 is externally connected to the roller 1, and the two ends of the bearing A2 are limited by round nuts 6, so that the roller 1 can rotate freely along the roller shaft 4. The inner side of the rim of the roller 1 is an inclined surface, and the rims on both sides form a V-shaped support surface. When working, the boring shaft is placed above the roller 1. When the boring shaft moves forward, the roller 1 rotates, so that the boring shaft is easy to move and will not cause damage to the surface of the boring shaft. The roller 1 can be changed in size to adapt to boring shafts of different diameters. And during the operation, the left and right, up and down positions of the bracket 5 can be adjusted at any time to ensure the coaxiality of the boring shaft and the milling shaft.

[0022] There are two support mechanisms, and the boring shaft is placed on the two support mechanisms. The end of the boring shaft is located on the right side of the figure, close to the milling shaft platform, and the front end of the boring shaft is located on the left side of the figure, away from the milling shaft platform. The two support mechanisms have basically the same structure, and a baffle 21 is fixed on the slide 10 in the support mechanism at the front end of the boring shaft, that is, the baffle is located Figure 1 The height of the baffle 21 is not lower than the upper edge of the roller 1. The baffle 21 can push the boring shaft forward when the support mechanism moves. At the same time, in order to ensure the support force and stability, the width of the slide seat of the support mechanism at the end of the boring shaft can be appropriately widened. The support mechanism close to the milling shaft plays an auxiliary support role when the boring shaft moves, and the support position can be adjusted at any time according to the position of the boring shaft when it moves.

[0023] The base 13 and the slide 10 in the milling and boring machine tool milling and boring shaft preparation combination device are made of cast iron, which is not easy to be damaged, has stable performance and smooth operation. When working, the boring shaft is pushed to move linearly by shaking the handle 19, which can avoid assembly damage and achieve the purpose of assembly. The structure is simple and the operability is strong.

[0024] A method for preparing and combining a milling and boring machine tool milling and boring spindle, using the above-mentioned milling and boring machine tool milling and boring spindle preparation and combination device, comprises the following steps: S1. Pre-fix the milling shaft on the milling shaft platform with a V-shaped iron, place the base 13 at the end of the milling shaft platform, make the rack 16 parallel to the milling shaft, and adjust the position of the base 13 so that the center of the roller 1 and the axis of the milling shaft are on the same vertical plane.

[0025] S2. Move the two support mechanisms to the two ends of the rack 16 respectively, wherein the support mechanism without the baffle is located at the end close to the milling axis, and the support mechanism with the baffle 21 is located at the end far from the milling axis.

[0026] S3. Place the boring spindle on the rollers 1 of the two supporting mechanisms, turn the adjusting screw 8, and adjust the length of the lower end of the adjusting screw 8 extending out of the bottom of the bracket 5, thereby adjusting the height of the bracket 5 in the two supporting mechanisms, so that the center of the boring spindle and the center of the milling spindle are at the same height, and use detection tools such as feeler gauges, dial indicators, and bend rulers to ensure that the center of the boring spindle is aligned with the center of the milling spindle.

[0027] S4. Shake the handle 19 of the support mechanism that drives the baffle 21. While the support mechanism moves forward along the rack 16, it pushes the boring shaft forward on the roller 1, and the roller rotates accordingly, which can avoid damaging the surface of the boring shaft. In this process, adjust the position of the front support mechanism according to the position of the boring shaft until the boring shaft enters the milling shaft. The support mechanism adopts manual feeding, which can sense the change of resistance and fine-tune the height and left and right position of the bracket 5 at any time to ensure the coaxiality of the boring shaft and the milling shaft, which can effectively avoid the risk of grinding and scratching the milling and boring shafts during the trial wear process.

[0028] The boring shaft in the device is supported by rollers, and moves on the rack through the supporting mechanism to drive the boring shaft to move forward. During the movement of the boring shaft, the roller at the bottom rotates accordingly, thereby avoiding wear and scratches on the surface of the boring shaft. The operation process frees the overhead crane and does not require the assistance of multiple people, saving labor and improving assembly efficiency. During the assembly process, the coaxiality of the boring shaft and the milling shaft can be adjusted in time to improve the assembly accuracy, thereby improving the stability of the milling and boring machine and the processing accuracy of parts.

[0029] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A milling and boring machine tool milling and boring spindle preparation and combination device, comprising a base (13), characterized in that: A rack (16) is fixed on the base (13), and two support mechanisms that can move along the rack (16) are connected to the rack (16), and the support mechanism includes a slide seat (10), and the slide seat (10) is connected to a gear shaft (18) through a bearing B (14), and the gear on the gear shaft (18) is meshed with the rack (16); the upper part of the slide seat (10) is connected to a height-adjustable bracket (5), and the bracket (5) is connected to a rotatable roller (1), and the rotation direction of the roller (1) is consistent with the rotation direction of the gear shaft (18).

2. The milling and boring machine tool milling and boring spindle preparation and combination device according to claim 1, characterized in that: The bracket (5) is connected to the slide seat (10) via a screw A (9); an adjusting screw (8) is threadedly connected to the bracket (5), and the lower end of the adjusting screw (8) is supported on the upper surface of the slide seat (10); the adjusting screw (8) is used to adjust the height of the bracket (5).

3. The milling and boring machine tool milling and boring spindle preparation and combination device according to claim 2, characterized in that: A roller shaft (4) is fixed on the bracket (5), the axial direction of the roller shaft (4) is parallel to the axial direction of the gear shaft (18), and the roller shaft (4) is connected to the roller (1) via a bearing A (2).

4. The milling and boring machine tool milling and boring spindle preparation and combination device according to claim 3, characterized in that: The end of the gear shaft (18) is connected to a handle (19).

5. The milling and boring machine tool milling and boring spindle preparation and combination device according to claim 4, characterized in that: The bottoms of both sides of the slide seat (10) are connected to a pressure plate (12) via screws B (11), and the inner side of the pressure plate (12) is located on the bottom surface of the top plate of the base (13).

6. The milling and boring machine tool milling and boring spindle preparation and combination device according to claim 5, characterized in that: There are two support mechanisms, and the boring spindle is placed on the two support mechanisms. A baffle (21) is fixed on the slide seat (10) in the support mechanism far away from the milling spindle, and the height of the baffle (21) is not lower than the upper edge of the roller (1).

7. An operating method of the milling and boring machine tool milling and boring spindle preparation and combination device according to any one of claims 1 to 6, characterized in that The following steps are involved: S1, placing the milling shaft on the milling shaft platform, fixing the base (13) on the end of the milling shaft platform, and making the rack (16) parallel to the milling shaft; S2, moving the two support mechanisms to the two ends of the rack (16), respectively, wherein the support mechanism with the baffle (21) is located at the end away from the milling axis; S3, placing the boring spindle on the rollers (1) of the two supporting mechanisms, and adjusting the heights of the brackets (5) in the two supporting mechanisms so that the center of the boring spindle and the center of the milling spindle are at the same height; S4. Shake the handle (19) of the support mechanism that drives the baffle (21), and the support mechanism moves forward along the rack (16), pushing the boring spindle into the milling spindle.

8. The operating method of the milling and boring machine tool milling and boring spindle preparation and combination device according to claim 7, characterized in that: When adjusting the height of the bracket (5) in step S3, the adjusting screw (8) is rotated to adjust the length of the lower end of the adjusting screw (8) extending out of the bottom of the bracket (5), thereby adjusting the height of the bracket (5).

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