Powerful anti-vibration cutter cylinder for boring machine

Abstract

The utility model discloses a strong shock-resistant cutter cylinder for a boring machine, which comprises a cutter sleeve, one end of the cutter sleeve is fixedly provided with a connecting flange, the other end of the cutter sleeve is fixedly provided with a cutter rest seat, the cutter sleeve is of a hollow steel pipe structure, the anti-bending section coefficient conforms to the following formula: pi (D4-d4) / 32D, D is the outer diameter of a steel pipe, d is the inner diameter of the steel pipe, and D is the outer diameter of the steel pipe. The utility model relates to the technical field of machining, the cutter sleeve adopts a hollow steel pipe structure, the anti-bending section coefficient of the cutter sleeve conforms to the formula Pi (D4-d4) / 32D, and compared with solid round steel with the same diameter, under the condition that the anti-bending strength and the anti-torsion strength are the same, the anti-bending section coefficient of the cutter sleeve conforms to the formula Pi (D4-d4) / 32D, and the anti-bending section coefficient of the cutter sleeve conforms to the formula Pi (D4-d4) / 32D. The steel pipe not only has better bending resistance, but also is lighter in weight, so that the overall weight is effectively reduced while the machining strength of the cutter cylinder is guaranteed, the load pressure of a machine tool spindle is reduced, and the stability in the machining process is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field, concretely is a strong anti -seismic cutter cylinder for boring machine. BACKGROUND

[0002] In the field of mechanical processing, when processing by boring machine, due to the deep hole characteristics of workpiece, spindle stiffness plays a decisive role in machining accuracy and production efficiency in the process of all extension to complete machining operation, if the spindle stiffness of machine tool is insufficient, vibration and deformation are easily caused in the processing, so that the machining accuracy is difficult to effectively guarantee. At the same time, processing vibration will have negative influence on the cutting force of cutter and the surface quality of workpiece, and further lead to low production efficiency and product quality decline. Especially in the boring processing of deep long hole, due to the special structure of workpiece, it is impossible to process in horizontal lathe, the boring machine spindle is too long, and vibration mark appears during boring, the surface roughness of workpiece is poor, and in the conventional deep hole boring, due to the insufficient stiffness of machine tool spindle and cutter bar, it is difficult to eliminate the vibration mark, so that the dimensional tolerance and geometric tolerance of parts are difficult to guarantee, which seriously affects product quality and production progress. SUMMARY

[0003] In view of the defects of the prior art, the utility model provides a strong anti -seismic cutter cylinder for boring machine, solves the problem that the cutting force of cutter and the surface quality of workpiece are influenced by the influence of processing vibration, thereby leading to low production efficiency and product quality decline.

[0004] To achieve the above object, the utility model realizes the following technical scheme: a strong anti -seismic cutter cylinder for boring machine, including cutter sleeve, the cutter sleeve one end is fixedly installed with the connecting flange, the other end is fixedly installed with the cutter holder seat, the cutter sleeve is hollow steel pipe structure, and the bending section coefficient meets the following formula: pi (D 4 -d 4 ) / 32D, wherein, D is the outer diameter of steel pipe, and d is the inner diameter of steel pipe.

[0005] Preferably, the stiffness of the cutter sleeve meets the following formula: K = fracEAL, wherein K represents the stiffness coefficient of the cutter sleeve, E represents the elastic modulus of the cutter sleeve, A is the cross-sectional area of the cutter sleeve, and L is the length of the cutter sleeve.

[0006] Preferably, the cutter sleeve and the connecting flange and cutter holder seat are connected by welding.

[0007] Preferably, the connecting flange, cutter sleeve and cutter holder seat are coaxially arranged.

[0008] Beneficial effects

[0009] The utility model provides a strong anti -seismic sword cylinder for boring machine has the following beneficial effects:

[0010] The sword sleeve adopts hollow steel pipe structure, and the bending section modulus coefficient meets the formula pi (D 4 -d 4 ) / 32D, compared with the solid round steel of same diameter, under the condition of same bending and torsional strength, the steel pipe not only has better bending performance, but also is lighter in weight, which makes the sword cylinder effectively reduce the overall weight while ensuring the machining strength, reduces the load pressure of the machine tool spindle and is favorable to improving the stability of the machining process.

[0011] The rigidity of the sleeve meets the formula K=fracEAL, when the workpiece hole depth is certain, the rigidity of the sword cylinder can be remarkably improved by reasonably increasing the section circle diameter of the sword cylinder, and higher rigidity can effectively improve and enhance the machining precision, reduce the chattering caused by the insufficient rigidity of the machine tool spindle and sword rod system, that is, the'shaking sword' phenomenon, which not only helps to improve the workpiece surface quality and ensure the stability of the size precision, but also prolongs the service life of the tool, reduces the scrap rate and improves the production efficiency.

[0012] The sword sleeve, the connecting flange and the tool holder seat are connected by welding, and the connecting mode ensures the stable combination of the components, meanwhile, the connecting flange, the sword sleeve and the tool holder seat are coaxially arranged, the balance of the sword cylinder in the rotating and cutting process is ensured, the vibration is further reduced, and the machining stability and precision are improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a structural schematic view of the utility model.

[0014] Fig. 2 It is a side view structural schematic view of the utility model.

[0015] In the drawing: 1, connecting flange; 2, sword sleeve; 3, tool holder seat. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the protection scope of the utility model.

[0017] Please refer to Figs. 1-2The utility model provides a technical scheme: a strong anti -seismic cutter barrel for boring machine, including cutter sleeve, the cutter sleeve one end fixed installation has the connecting flange, the other end fixed installation has the cutter rest, the cutter sleeve is hollow steel pipe structure, and the bending section modulus coefficient accords with following formula: pi (D 4 -d 4 ) / 32D, wherein, D is steel pipe outer diameter, d is steel pipe inner diameter.

[0018] This embodiment is further provided as the rigidity of the cutter sleeve accords with following formula: K = fracEAL, wherein, K indicates the rigidity coefficient of cutter sleeve, E represents the elastic modulus of cutter sleeve, A is the cross section area of cutter sleeve, and L is the length of cutter sleeve.

[0019] This embodiment is further provided as the welding connection is used between the cutter sleeve and the connecting flange and the cutter rest.

[0020] This embodiment is further provided as the connecting flange, cutter sleeve and cutter rest adopt coaxial arrangement.

[0021] Through the person skilled in the art, the parts in the case are connected in turn, and the specific connection and operation sequence should be referred to the following working principle, and the detailed connection means is the public known technology in the field, and the following mainly introduces the working principle and process.

[0022] Embodiment: according to the deep hole size and machine tool parameters required to be processed, select the steel pipe with suitable outer diameter D and inner diameter d as cutter sleeve material, ensure that the bending section modulus coefficient meets the design requirement.

[0023] According to the design size, cut the steel pipe to the appropriate length L.

[0024] Make the connecting flange and the cutter rest, ensure that the size precision and coaxiality requirement.

[0025] Weld the connecting flange and the cutter rest at the two ends of the cutter sleeve respectively, ensure the welding quality, ensure that the connection is firm and coaxial.

[0026] Install the prepared strong anti -seismic cutter barrel to the boring machine spindle, connect the spindle through the connecting flange, ensure firm installation, fix the deep hole workpiece to be processed on the boring machine workbench, adjust the position and angle, select the appropriate cutter and install on the cutter rest according to the workpiece material, hole diameter and processing requirement.

[0027] Start the boring machine, begin deep hole boring processing. In the processing process, reasonably adjust the cutting parameters, such as cutting speed and feed rate, according to the actual situation, after processing, turn off the boring machine, and take down the processed workpiece.

[0028] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0029] While embodiments of the present application have been shown and described with reference to the figures, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the spirit and scope of the present application, which should be limited only by the scope of the appended claims and the equivalents thereof.

Claims

1. A strong anti-vibration tool cylinder for a boring machine, characterized in that, The utility model relates to a kind of knife sleeve (2), the connecting flange (1) is fixedly installed in one end of the knife sleeve (2), the tool rest seat (3) is fixedly installed in the other end, the knife sleeve (2) is hollow steel pipe structure, and bending section modulus coefficient meets the following formula: π (D 4 -d 4 ) / 32D, wherein D is the outer diameter of steel pipe, d is the inner diameter of steel pipe.

2. The strong anti-vibration tool cylinder for boring machine according to claim 1, wherein, The rigidity of the tool sleeve (2) meets the following formula: K = fracEAL, wherein K represents the rigidity coefficient of the tool sleeve (2), E represents the elastic modulus of the tool sleeve (2), A is the cross-sectional area of the tool sleeve (2), and L is the length of the tool sleeve (2).

3. The strong anti-vibration tool cylinder for boring machine according to claim 2, wherein, The tool sleeve (2) is connected with the connecting flange (1) and the tool holder seat (3) by welding.

4. The strong anti-vibration tool cylinder for boring machine according to claim 1, wherein The connecting flange (1), the tool sleeve (2) and the tool holder seat (3) are coaxially arranged.

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