Numerical control lathe chip blocking sleeve capable of adjusting axial positioning

Abstract

The utility model relates to a numerical control lathe chip blocking sleeve capable of adjusting axial positioning, and belongs to the technical field of machining. Comprising a hydraulic three-jaw chuck, an auxiliary sleeve, a chip blocking sleeve, a gasket and a guide column. The chip blocking sleeve is a through hole with two through ends and is composed of two cylinders with different inner diameters, the outer end of the joint of the two cylinders is a chip blocking sleeve shaft shoulder, the inner end of the joint of the two cylinders is a chip blocking sleeve inner hole shaft shoulder, the outer side of the other end of the cylinder with the smaller inner diameter is provided with chip blocking sleeve external threads, and the inner side of the other end of the cylinder with the smaller inner diameter is provided with chip blocking sleeve internal threads. The adjustable thread on the auxiliary sleeve is in threaded connection with the external thread of the chip blocking sleeve, the chip blocking sleeve is fixed with the hydraulic three-jaw chuck, the gasket is arranged in an inner hole of the chip blocking sleeve from one end of the chip blocking sleeve, and the guide column is matched with the internal thread of the chip blocking sleeve through the guide column thread and is screwed into the inner hole of the chip blocking sleeve. And rapid adjustment can be achieved according to the sizes of the parts after small-batch replacement, and a positioning reference after replacement is generated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a numerical control lathe chip deflector sleeve with adjustable axial positioning and belongs to the technical field of machining. BACKGROUND

[0002] The machining range of the numerical control lathe is suitable for shaft parts, and the bar stock blank is usually clamped and machined by a three-jaw hydraulic chuck or clamped and machined to realize head turning.

[0003] 1. When the turned part extends out of the chuck too much, the first tool turning has a large cutting amount, which can easily cause tool damage.

[0004] 2. When the turned part extends out of the chuck too little, the end face of the part cannot be completely turned, resulting in size out-of-tolerance.

[0005] 3. The axial tool is clamped each time, and the production efficiency is reduced.

[0006] To solve such problems, the utility model provides a numerical control lathe chip deflector sleeve with adjustable axial positioning, which can have accurate axial positioning after each clamping of the part, and can quickly adjust the size of the part after small-batch production to generate a positioning reference after production change. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims to overcome the problems of the prior art, i.e., the numerical control lathe chip deflector sleeve does not have an axial positioning function and cannot quickly generate a positioning reference after production change for the size of the part after small-batch turning of the part.

[0008] The utility model aims to overcome the problems of the prior art, i.e., the numerical control lathe chip deflector sleeve does not have an axial positioning function and cannot quickly generate a positioning reference after production change for the size of the part after small-batch turning of the part.

[0009] The utility model provides a numerical control lathe chip deflector sleeve with adjustable axial positioning, which comprises a hydraulic three-jaw chuck, a secondary sleeve, a chip deflector sleeve, a gasket, and a guide column.

[0010] The secondary sleeve has a cylindrical structure, an adjustable thread is arranged on the inner side of the opening, and a wrench groove is formed in the bottom end positioning surface of the secondary sleeve.

[0011] The chip deflector sleeve has a through hole penetrating through both ends and is composed of two cylinders with different inner diameters, wherein the outer end of the connection between the two cylinders is a chip deflector sleeve shoulder, the inner end of the connection between the two cylinders is a chip deflector sleeve inner hole shoulder, the outer side of the other end of the cylinder with a smaller inner diameter is provided with a chip deflector sleeve external thread, the inner side is provided with a chip deflector sleeve internal thread, the outer side of the other end of the cylinder with a larger inner diameter is provided with a baffle, and three threaded holes are uniformly arranged on the baffle.

[0012] One end of the gasket is gasket end face one, and the other end is gasket end face two.

[0013] The guide pillar is composed of two solid cylinders with different diameters, and the connecting part of the two solid cylinders is a guide pillar shoulder; the outer side of one end of the guide pillar is provided with guide pillar threads; and the other end of the guide pillar is provided with a guide pillar wrench groove.

[0014] The adjustable threads on the auxiliary sleeve are threadedly connected with the outer threads of the chip retaining sleeve; the outer diameter of the auxiliary sleeve is smaller than the inner diameter of the main shaft sleeve of the numerical control lathe; the three threaded holes on the chip retaining sleeve are fixed with the hydraulic three-jaw chuck through three countersunk head screws; the gasket is installed into the inner hole of the chip retaining sleeve from the end with larger inner diameter of the chip retaining sleeve, and gasket end face one is in full contact with the shoulder end face of the inner hole of the chip retaining sleeve; and the guide pillar is screwed into the inner hole of the chip retaining sleeve through the cooperation of the guide pillar threads and the inner threads of the chip retaining sleeve until the guide pillar shoulder is in full contact with gasket end face two.

[0015] The thickness of the gasket can be made into multiple specifications according to actual requirements, and when the axial positioning requirement changes after changing production, the guide pillar can be screwed off by using the wrench groove, the gasket can be replaced, and the guide pillar can be screwed on again to quickly adapt to the production requirement.

[0016] Working principle

[0017] When the axial dimension of the turned part is long, axial positioning cannot be realized by using the gasket and the guide pillar due to the limited length of the main shaft sleeve of the numerical control lathe; the gasket and the guide pillar are disassembled; the screwing length of the adjustable threads and the outer threads of the chip retaining sleeve is adjusted by using the auxiliary sleeve wrench groove; the screwing length of the auxiliary sleeve and the chip retaining sleeve is adjusted; and the bottom end positioning surface of the auxiliary sleeve can realize axial positioning.

[0018] When the axial dimension of the turned part is small, the length of the part machining range is determined by adjusting the length of the guide pillar screwed into the chip retaining sleeve and the thickness of the gasket; when the axial dimension of the turned part is large, the screwing length of the auxiliary sleeve and the chip retaining sleeve is adjusted; and then the part can be quickly machined by placing the part into the center hole of the hydraulic three-jaw chuck and clamping the three claws against the positioning surface, thereby omitting the complicated process of tool setting each time, improving the machining efficiency, and reducing the labor intensity of the operator.

[0019] Beneficial effects

[0020] The chip retaining sleeve of the utility model has accurate axial positioning, can realize quick adjustment according to the size of the part after small-batch production, and generates a positioning reference after production change, and is a numerical control lathe chip retaining sleeve which is convenient and reliable, has high positioning precision, is convenient to disassemble, has adjustable positioning, is simple to manufacture, is economical and practical, has high production efficiency, and is suitable for various main shaft hollow type numerical control lathes and is widely applied in production and has high popularization value. DRAWINGS

[0021] Figure 1 is the assembly schematic view of the utility model;

[0022] Figure 2 is the hydraulic three-jaw chuck schematic view of the utility model;

[0023] Figure 3 is the auxiliary sleeve schematic view of the utility model;

[0024] Figure 4 is the chip stopping sleeve schematic view of the utility model;

[0025] Figure 5 is the gasket schematic view of the utility model;

[0026] Figure 6 is the guide column schematic view of the utility model;

[0027] Figure 7 is the traditional chip stopping sleeve schematic view.

[0028] Marked number in the drawing: 1, hydraulic three-jaw chuck, 2, auxiliary sleeve, 3, adjustable thread, 4, wrench groove, 5, chip stopping sleeve, 6, chip stopping sleeve outer thread, 7, chip stopping sleeve inner thread, 8, chip stopping sleeve shaft shoulder, 9, chip stopping sleeve inner hole shaft shoulder, 10, gasket, 11, gasket end face one, 12, gasket end face two, 13, guide column, 14, guide column thread, 15, guide column shaft shoulder, 16, guide column wrench groove. DETAILED DESCRIPTION

[0029] The utility model will be further explained in detail in combination with the drawings and examples.

[0030] Example

[0031] In combination Figures 1-6 The utility model discloses a numerical control lathe chip stopping sleeve of adjustable axial positioning, including: hydraulic three-jaw chuck 1, auxiliary sleeve 2, chip stopping sleeve 5, gasket 10, guide column 13.

[0032] Auxiliary sleeve 2 is the tubular structure, and the inside of the opening is provided with adjustable thread 3, and the bottom end positioning surface of auxiliary sleeve 2 is provided with wrench groove 4.

[0033] Chip stopping sleeve 5 is the through hole of two ends, and is composed of two cylinders with different inner diameters, wherein the outer end of the connecting place of two cylinders is chip stopping sleeve shaft shoulder 8, the inner end of the connecting place of two cylinders is chip stopping sleeve inner hole shaft shoulder 9, the outer side of the other end of the smaller cylinder is provided with chip stopping sleeve outer thread 6, and the inner side is provided with chip stopping sleeve inner thread 7, and the outer side of the other end of the larger cylinder is provided with baffle, and three threaded holes are uniformly arranged on the baffle.

[0034] One end of gasket 10 is gasket end face one 11, and the other end is gasket end face two 12.

[0035] The guide pillar 13 is composed of two solid cylinders with different diameters, and the joint of the two solid cylinders is the guide pillar shoulder 15. The outer side of one end of the guide pillar 13 is provided with guide pillar threads 14, and the other end of the guide pillar 13 is provided with a guide pillar wrench groove 16.

[0036] The adjustable threads 3 on the auxiliary sleeve 2 are threadedly connected with the chip breaker sleeve outer threads 6, the outer diameter of the auxiliary sleeve 2 is smaller than the inner diameter of the main shaft sleeve of the numerical control lathe, the three threaded holes on the chip breaker sleeve 5 are fixed with the hydraulic three-jaw chuck 1 through three countersunk head screws, the gasket 10 is installed into the inner hole of the chip breaker sleeve 5 from the end with larger inner diameter of the chip breaker sleeve 5, the gasket end face one 11 is in full contact with the end face of the inner hole shoulder 9 of the chip breaker sleeve, and the guide pillar 13 is screwed into the inner hole of the chip breaker sleeve 5 through the cooperation of the guide pillar threads 14 and the chip breaker sleeve inner threads 7 until the guide pillar shoulder 15 is in full contact with the gasket end face two 12.

[0037] The thickness of the gasket 10 can be made into multiple specifications according to actual needs. When the axial positioning requirement changes after changing production, the guide pillar 13 can be unscrewed by using the wrench groove 16, the gasket 10 can be replaced, and the guide pillar 13 can be screwed again to quickly adapt to the production requirement.

[0038] Working principle

[0039] When the axial size of the turned part is relatively long, the axial positioning cannot be realized by using the gasket 10 and the guide pillar 13 due to the limited length of the main shaft sleeve of the numerical control lathe. The gasket 10 and the guide pillar 13 are disassembled, the adjustable threads 3 and the chip breaker sleeve outer threads 6 are adjusted by using the auxiliary sleeve wrench groove 4, the rotation length of the auxiliary sleeve 2 and the chip breaker sleeve 5 is adjusted, and the axial positioning can be realized by the bottom end positioning surface of the auxiliary sleeve.

[0040] When the axial size of the turned part is relatively small, the length of the part machining range is determined by adjusting the length of the guide pillar 13 screwed into the chip breaker sleeve 5 and the thickness of the gasket 10. When the axial size of the turned part is relatively large, the rotation length of the auxiliary sleeve 2 and the chip breaker sleeve 5 is adjusted. Then, the part can be quickly machined by placing the part into the center hole of the hydraulic three-jaw chuck 1 and clamping the three claws, the tedious process of tool setting is saved, the positioning is reliable, the machining efficiency is improved, and the labor intensity of the operator is reduced.

Claims

1. An adjustable axial positioning chip breaker sleeve for a CNC lathe, characterized by, Include: Hydraulic three jaw chuck, vice sleeve, chip retaining sleeve, gasket, guide column; The vice sleeve is a cylindrical structure, and an adjustable thread is arranged on the inner side of the opening. A wrench groove is formed in the bottom end positioning surface of the vice sleeve; The chip retaining sleeve is a through hole penetrating through both ends and is composed of two cylinders with different inner diameters. The outer end of the connection between the two cylinders is a chip retaining sleeve shoulder, the inner end of the connection between the two cylinders is a chip retaining sleeve inner hole shoulder, the outer side of the other end of the cylinder with a smaller inner diameter is provided with a chip retaining sleeve external thread, the inner side is provided with a chip retaining sleeve internal thread, and the outer side of the other end of the cylinder with a larger inner diameter is provided with a baffle. Three threaded holes are uniformly arranged on the baffle; One end of the gasket is a gasket end face one, and the other end is a gasket end face two; The guide column is composed of two solid cylinders with different diameters, and the connection between the two solid cylinders is a guide column shoulder. The outer side of one end of the guide column is provided with a guide column thread, and the other end of the guide column is provided with a guide column wrench groove; The adjustable thread on the vice sleeve is threadedly connected with the chip retaining sleeve external thread. The outer diameter size of the vice sleeve is smaller than the inner diameter of the main shaft sleeve of the numerical control lathe. The three threaded holes on the chip retaining sleeve are fixed with the hydraulic three jaw chuck through three countersunk head screws. The gasket is installed in the chip retaining sleeve inner hole from the end with a larger inner diameter of the chip retaining sleeve. The gasket end face one is in full contact with the chip retaining sleeve inner hole shoulder end face. The guide column is screwed into the chip retaining sleeve inner hole through the cooperation of the guide column thread and the chip retaining sleeve internal thread, until the guide column shoulder is in full contact with the gasket end face two. The thickness size of the gasket can be made into multiple specifications according to actual needs. When the axial positioning requirement changes after changing production, only the guide column needs to be unscrewed with a wrench groove, the gasket needs to be replaced, and then the guide column needs to be screwed on to quickly adapt to the production requirement.

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