CN203335752U - Numerically-controlled machine tool gearbox - Google Patents
Numerically-controlled machine tool gearbox Download PDFInfo
- Publication number
- CN203335752U CN203335752U CN2013204213741U CN201320421374U CN203335752U CN 203335752 U CN203335752 U CN 203335752U CN 2013204213741 U CN2013204213741 U CN 2013204213741U CN 201320421374 U CN201320421374 U CN 201320421374U CN 203335752 U CN203335752 U CN 203335752U
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- gear
- machine tool
- gears
- output shaft
- input shaft
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Abstract
The utility model discloses a numerically-controlled machine tool gearbox, and relates to the field of machinery. The numerically-controlled machine tool gearbox aims to solve the problem that when transmission gears of an existing numerically-controlled machine toolbox are switched, a separation tail end section and an initial combination section between gears are mechanically damaged. According to the technical scheme, the numerically-controlled machine tool gearbox comprises a box body, an input shaft and an output shaft, wherein the input shaft and the output shaft are installed in the box body. A fixed gear and a movable gear coaxially connected with the fixed gear are respectively connected to the input shaft and the output shaft fixedly; the movable gear is composed of at least three arc-shaped gear bodies; the arc-shaped gear bodies are connected with the input shaft where the arc-shaped gear bodies are located or the output shaft where the arc-shaped gear bodies are located through splines; the fixed gears are meshed with the movable gears alternatively. The numerically-controlled machine tool gearbox has the advantages of reducing mechanical damages of the separation end section and the initial combination section of the gears when the gears are switched, prolonging the service life of the gears, being free of manual operation and high in automation degree and positioning precision because the arc-shaped gear bodies move axially and reducing the temperature in the box bodies, and the using efficiency of the gearbox is improved.
Description
Technical field
The utility model relates to a kind of field of machining, is specifically related to a kind of numerical control machine tool gearbox.
Background technique
Along with developing rapidly of China's machinery industry, machining requires more and more higher to the quality of equipment, precision etc., and numerical control machine tool is as the topmost machine automatization process equipment of China, and the indices of numerical control machine tool is required just to seem more and more important.Gearbox is main as numerical control machine tool, be also most important constituent element simultaneously, the indexs such as machining accuracy of numerical control machine tool are played to vital effect.Existing numerical control machine tool gearbox mainly is comprised of component such as casing, input shaft, output shaft, driving gears, realizes that by the switching driving gear gear ratio of input and output is regulated.This kind of gearbox when the switching driving gear, the separation end section between gear and less in conjunction with initial segment contact position area, mechanical deterioration very easily appears in gear, affects the working life of gear.
Summary of the invention
The utility model provides a kind of numerical control machine tool gearbox, and its purpose is to overcome the separation end section between gear that existing numerical control machine tool gearbox occurs when the switching driving gear and the mechanical deterioration occurred in conjunction with initial segment, extends the working life of gear.
For achieving the above object, the utility model adopts following technological scheme:
A kind of numerical control machine tool gearbox, comprise casing, be installed on input shaft and output shaft in casing, it is characterized in that: fixed gear has been fixedly connected respectively on input shaft and output shaft, with the coaxial free gear connected of fixed gear, free gear at least is comprised of 3 arcuation gear masses, the arcuation gear mass connects with input shaft or the output shaft at place by spline, and fixed gear and free gear are selected an engagement.
Further, be provided with hydraulic jack in casing, be connected with on the piston rod of hydraulic jack for adsorbing the magnetic-adsorption parts of arcuation gear mass.
Further, the position limit switch that also comprises the limit position for controlling the arcuation gear mass.
Further, offer radiation hole on casing.
The beneficial effects of the utility model are:
1, be respectively equipped with the free gear at least formed by 3 arcuation gear masses on input shaft and output shaft, when the switching driving gear, first stir the arcuation gear mass that has neither part nor lot in engagement, turn over after several angle the arcuation gear mass of stirring again other on axle, realize the switching of driving gear, in the separation end section of gear and the mechanical deterioration occurred in conjunction with initial segment, extend the working life of gear while having reduced the switching driving gear.
2, the absorption of the magnetic-adsorption parts on piston rod arcuation gear mass promotes the axial motion of arcuation gear mass under the effect of hydraulic jack, and without manual operation, automaticity is high.
3, the position limit switch arranged at the arcuation gear mass switching place of putting in place, in arcuation gear mass handoff procedure, positioning precision is high.
4, offer radiation hole on casing, effectively lower the temperature in casing, improve the utilization efficiency of gearbox.
The accompanying drawing explanation
Fig. 1 is assembling schematic diagram of the present utility model;
Fig. 2 is free gear and splined schematic diagram in the utility model;
Wherein reference character is: 1-casing, 2-input shaft, 3-output shaft, 4-fixed gear, 5-free gear, 6-arcuation gear mass, 7-spline, 8-radiation hole, 9-hydraulic jack, 10-piston rod, 11-magnetic-adsorption parts, 12-position limit switch.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
As depicted in figs. 1 and 2, lathe gearbox, comprise casing 1, input shaft 2 and output shaft 3 are arranged in casing 1 by bearing, be separately installed with driving gear on input shaft 2 and output shaft 3, input shaft 2 passes to output shaft 3 by power by driving gear, and finally drives the machine tool chief axis rotation.Described driving gear comprises fixed gear 4 and free gear 5, on input shaft 2, is coaxially installed with fixed gear 4 and free gear 5, is coaxially installed with equally fixed gear 4 and free gear 5 on output shaft 3.Fixed gear 4 is fixedly connected on input shaft 2 or output shaft 3 by flat key, free gear 5 connects with input shaft 2 or the output shaft 3 at its place by spline 7, this free gear 5 is spliced by least 3 arcuation gear masses 6, each arcuation gear mass 6 not only can not come off from input shaft 2 or output shaft 3, and can axially move along spline 7, realize the switching of driving gear.Under working state, fixed gear 4 and free gear 5 is two pairs of gears that switch between engagement and separated state one to one, and two pairs of gears are selected an engagement.Be provided with hydraulic jack 9 in casing 1, the end of the piston rod 10 of hydraulic jack 9 is connected with magnetic-adsorption parts 11.When needs switching driving gear, magnetic-adsorption parts 11 adsorb arcuation gear masses 6, and realize the axial motion of arcuation gear mass 6 by the back and forth movement of piston rod 10.Each free gear 5 just corresponding hydraulic jack 9, piston rod 10 and magnetic-adsorption parts 11, these magnetic-adsorption parts 11 produce variable magnetic force by additional electric power and realize suction-operated, as long as an outage, magnetic force will disappear.Control the size that has that it's too late of adsorption force between magnetic-adsorption parts and arcuation gear mass 6 by electric power.Be provided with position limit switch 12 on casing 1, the position of the trip switch 12 is positioned at arcuation gear mass 6 and switches the place that puts in place, for controlling the axial limit position of arcuation gear mass 6, and the accurate location during to 6 switching of arcuation gear mass.While working due to gearbox, the high-speed gear rotation, produce a large amount of heats, therefore, on casing 1 surface, offers radiation hole 8, by radiation hole 8, distributes the heat that casing 1 internal gear produces, for the gear normal operation provides better condition.
Under working state, be arranged on respectively fixed gear 4 on input shaft 2 and output shaft 3 and free gear 5 for one to one two pairs in engagement the gears with the switching of separated state part, two pairs of gears are selected an engagement, during i.e. free gear 5 engagement in fixed gear in input shaft 24 and output shaft 3, free gear 5 in input shaft 2 and the fixed gear 4 in output shaft 3 are in non-engagement state, on the contrary also establishment.When the needs change gear, first by the magnetic-adsorption parts 11 on piston rod 10, axially push away the arcuation gear mass 6 of the non-engagement side of in/out position, now arcuation gear mass 6 axially moves to certain position, this position is controlled by position limit switch 12, input/shaft rotates to an angle afterwards, axially push away again the now arcuation gear mass in non-engagement side position of in/out, repeat above-mentioned action, until the free gear 5 in engagement exited engagement fully originally, originally the free gear in non-engagement state is fully in engagement, the release of above-mentioned arcuation gear mass and push and can carry out simultaneously.Because free gear 5 of the present utility model is comprised of at least 3 arcuation gear masses 6, therefore, even if occur in same free gear 5 that two arcuation gear masses 6 are in engagement simultaneously, also other arcuation gear mass 6 axially can be pushed away to in/out, but while by 2 arcuation gear masses 6, forming the movable teeth wheel body, two 6 whiles of arcuation gear mass, when engagement, push away in/out arcuation gear mass 6 just particularly difficult.
Due to two pairs of gears (as shown in Figure 1) only being installed on above-mentioned input shaft 2 and output shaft 3, by the number of teeth of setting each gear, can only realize two gear ratio.In order to realize more, larger gear ratio, can on the basis of Fig. 1, separately establish respectively again the free gear 5 that quantity is equal on input shaft 2 or output shaft 3; Also can set up transmission shaft, fixed gear 4 and free gear 5 are installed on this transmission shaft accordingly, multipair fixed gear 4 and free gear 5 are realized more, larger gear ratio in the mode of selecting an engagement one to one, meet process requirements.
Fixed gear 4 in above-mentioned driving gear and free gear 5, except adopting straight-tooth, angular gear, also can adopt bevel gear, and its working principle is identical with foregoing with handoff procedure.In the specific implementation, can meet different process requirements by the angle of regulating between input shaft 2 and output shaft 3.
Claims (4)
1. a numerical control machine tool gearbox, comprise casing (1), be installed on input shaft (2) and output shaft (3) in casing (1), it is characterized in that: fixed gear (4) has been fixedly connected respectively on input shaft (2) and output shaft (3), with the coaxial free gear connected of fixed gear (4) (5), free gear (5) at least is comprised of 3 arcuation gear masses (6), arcuation gear mass (6) connects with input shaft (2) or the output shaft (3) at place by spline (7), and fixed gear (4) is selected an engagement with free gear (5).
2. a kind of numerical control machine tool gearbox as claimed in claim 1, it is characterized in that: be provided with hydraulic jack (9) in casing (1), be connected with on the piston rod (10) of hydraulic jack (9) for adsorbing the magnetic-adsorption parts (11) of arcuation gear mass (6).
3. a kind of numerical control machine tool gearbox as claimed in claim 2, is characterized in that: the position limit switch (12) that also comprises the limit position for controlling arcuation gear mass (6).
4. a kind of numerical control machine tool gearbox as claimed in claim 1, is characterized in that: offer radiation hole (8) on casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204213741U CN203335752U (en) | 2013-07-16 | 2013-07-16 | Numerically-controlled machine tool gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204213741U CN203335752U (en) | 2013-07-16 | 2013-07-16 | Numerically-controlled machine tool gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335752U true CN203335752U (en) | 2013-12-11 |
Family
ID=49704428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204213741U Expired - Fee Related CN203335752U (en) | 2013-07-16 | 2013-07-16 | Numerically-controlled machine tool gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203335752U (en) |
-
2013
- 2013-07-16 CN CN2013204213741U patent/CN203335752U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20150716 |
|
| EXPY | Termination of patent right or utility model |