CN202006380U - Change gear mechanism suitable for mini-lathes - Google Patents
Change gear mechanism suitable for mini-lathes Download PDFInfo
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- CN202006380U CN202006380U CN2011200957467U CN201120095746U CN202006380U CN 202006380 U CN202006380 U CN 202006380U CN 2011200957467 U CN2011200957467 U CN 2011200957467U CN 201120095746 U CN201120095746 U CN 201120095746U CN 202006380 U CN202006380 U CN 202006380U
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- gear
- change gear
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Abstract
The utility model provides a change gear mechanism suitable for mini-lathes. The change gear mechanism comprises a main shaft, a main shaft gear, a switching device, a change gear fixing plate and a change gear set mounted on the change gear fixing plate, and is characterized in that the change gear set comprises an idle gear set, an intermediate gear and a change gear set, wherein the switching device comprises a switching operation mechanism and a switching plate which is mounted on an intermediate gear shaft and can rotate around the intermediate gear shaft, the idle gear set comprises a first idle gear and a second idle gear, which are mounted on the switching plate and meshed mutually, the first idle gear is meshed with the intermediate gear and can be meshed with the main shaft gear, the second idle gear can be meshed with the main shaft gear after switching, the first idle gear is further disengaged from the main shaft gear, and the intermediate gear is matched with the change gear set and can drive a lathe screw rod to rotate. The change gear mechanism is not only simple in structure and low in manufacturing cost, but also complete in functions, stable in performances; moreover, the change gear mechanism has the direction change function.
Description
Technical field
The utility model relates to the Pulley mechanism of a kind of transmission mechanism of lathe, particularly a kind of lathe.
Background technology
The Pulley mechanism of at present common lathe mainly comprises main spindle box output shaft, power transmission shaft and feed box power shaft, realizes the change gear speed changes by three duplicate gears being located at respectively on main spindle box output shaft, power transmission shaft and the feed box power shaft.Yet, such extension opinion structure more complicated, the cost height, price is big, is not suitable for small-sized teaching lathe.At the characteristics of small-sized teaching with lathe, need the Pulley mechanism of existing engine lathe be improved, simplify its structure, to adapt to the demand of small-sized teaching with lathe.
The utility model content
The technical problems to be solved in the utility model is to propose a kind of lathe Pulley mechanism, and it not only has simple in structure, and the advantage that cost is low also has the function of commutation, to be applicable to the demand of junior machine.
In order to solve the problems of the technologies described above, the utility model is applicable to that the Pulley mechanism of small-sized lathe comprises main shaft, mainshaft gear, switching device shifter, change gear fixed head and the gear changing group that is installed on the change gear fixed head, it is characterized in that, described gear changing group comprises the carrier gear group, idler gear and change gear group, described switching device shifter comprises handover operation mechanism and is installed on also can be around the switch boards of intermediate gear shaft rotation on the intermediate gear shaft, described carrier gear group comprises and being installed on the switch boards and intermeshing first carrier gear and second carrier gear, described first carrier gear and idler gear engagement also can be meshed with mainshaft gear, after the switching, described second carrier gear can mesh with mainshaft gear, and described first carrier gear and mainshaft gear disengagement; Described idler gear and change gear assembly merge drive lathe screw mandrel and rotate.
Adopt the lathe Pulley mechanism of this structure, not only simple in structure, cost is low, also has the reliable advantage of transmission performance; In addition, pass through rotating and switching device, can change the mesh form of carrier gear group and mainshaft gear and idler gear, first carrier gear is meshed with idler gear and mainshaft gear respectively, perhaps make the engagement of first carrier gear and idler gear, second carrier gear and mainshaft gear engagement, and then the direction of rotation of change screw mandrel, the slip crate that drives lathe is towards different direction motions, not only simplify the structure, the advantage that also has multiple functional stable performance can effectively reduce small-sized lathe cost of manufacture.
As a kind of improvement of the present utility model, described change gear group comprises two kinds of structural changes:
1) described change gear group comprise first change gear, the 4th change gear and respectively with the 3rd change gear of first change gear, the engagement of the 4th change gear, described first change gear and idler gear are in-line gears, the 4th change gear drives screw mandrel and rotates, and the 4th change gear drives screw mandrel and rotates.
2) described change gear group comprise first change gear, with second change gear of first change gear engagement, with coaxial the 3rd change gear of second change gear and the 4th change gear that meshes with the 3rd change gear, described first change gear and idler gear are in-line gears, the 4th change gear drives screw mandrel and rotates, and the 4th change gear drives screw mandrel and rotates.
Adopt the lathe Pulley mechanism of this change gear group structure,, can make lathe can process different thread by the structure that changes the change gear group and the number of teeth that changes each change gear.
Further, described switch boards comprises the handle section that is the fanning strip that is wholely set and is provided with cavity, described handover operation mechanism comprises taper knob, pilot pin and compression spring, be provided with slide construction between described fanning strip and the change gear fixed head, described change gear fixed head is provided with two location shrinkage pools that are complementary with described pilot pin, described taper knob is set on the handle section, described pilot pin comprises shank and the syringe needle that is complementary with described location shrinkage pool, this shank extends through the handle section cavity and fixedlys connected with taper knob, described compression spring housing is contained on the pilot pin, and place between handle section cavity and the pilot pin syringe needle, described carrier gear group is installed on the fanning strip.Described slide construction comprises two kinds of structures, the reference column that can be the chute that is arranged on the fanning strip and be arranged on the change gear fixed head and be complementary with this chute; The reference column that also can be the chute that is arranged on the change gear fixed head and be arranged on the fanning strip and be complementary with this chute.Adopt the switching device shifter of this structure,, can change the engagement between carrier gear group and idler gear and the mainshaft gear, and then change the rotation direction of screw mandrel by changing the relative position of chute and reference column; By the compression spring is set, under the effect of elastic force, pilot pin can be positioned at tightly in the shrinkage pool of location, prevent to break away from the location shrinkage pool because of reasons such as vibration cause pilot pin, can make the duty of lathe extension opinion mechanism more reliable and more stable.
Further, described main shaft is provided with sensing gear that is complementary with mainshaft gear and the sensor that is complementary with this sensing gear, can control the rotating speed of main shaft by sensor.
In a word, the utility model is applicable to that the Pulley mechanism of small-sized lathe is not only simple in structure, and cost of manufacture is cheap, and multiple functional stable performance, and has commutation function, by changing the structure or the gear ratio of change gear group, can also process different thread.
Description of drawings
Fig. 1 is the structural representation that is applicable to the Pulley mechanism of small-sized lathe of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 a is first kind of structural representation of change gear;
Fig. 3 b is second kind of structural representation of change gear.
Description of reference numerals;
The 11-mainshaft gear; 12-first carrier gear; 13-second carrier gear; The 14-idler gear; 15-first change gear; 16-second change gear; 17-the 3rd change gear; 18-the 4th change gear; 19-sensing gear; The 20-switching device shifter; The 21-taper knob; The 22-switch boards; The 22a-handle section; The 22b-fanning strip; The 22c-chute; The 22d-cavity; 23-compresses spring; The 24-nut; The 25-reference column; The 26-pilot pin; The 26a-syringe needle; The 26b-shank; The 31-intermediate gear shaft; 32-axle bolt; The 33-support bracket bolt; 34-change gear support; The 35-sensor; 40-change gear fixed head; 50-change gear case; The 60-main shaft.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the Pulley mechanism of small-sized lathe that is applicable to of the present utility model is elaborated.
As depicted in figs. 1 and 2, be applicable to the structural representation of the Pulley mechanism of small-sized lathe for the utility model, the Pulley mechanism of present embodiment, the change gear fixed head 40 that comprises main shaft 60, is installed in mainshaft gear 11 on the main shaft 60, links together with other parts of lathe and be installed on gear changing group on the change gear fixed head 40.
Gear changing group comprises carrier gear group, switching device shifter 20, idler gear 14 and change gear group.Wherein switching device shifter comprises handover operation mechanism and is installed on the switch boards 22 that also can center on intermediate gear shaft 31 rotations on the intermediate gear shaft 31.Switch boards 22 comprises the handle section 22a that is the fanning strip 22b that is wholely set and is provided with cavity; Handover operation mechanism comprises taper knob 21, pilot pin 26 and compression spring 23.Switch boards 22 comprise fanning strip 22b and in establish the handle section 22a of cavity, be provided with slide construction between fanning strip and the change gear fixed head 40, this slide construction can adopt respectively and to be provided with chute 22c on the fanning strip and to be provided with the form of the reference column 25 that is complementary with this chute 22c on change gear fixed head 40, also can adopt reference column is set on fanning strip respectively, on change gear fixed head 40, be provided with and the form that changes the chute that reference column is complementary, present embodiment adopts first kind of version, promptly be provided with chute 22c on the fanning strip and on change gear fixed head 40, be provided with the reference column 25 that is complementary with this chute 22c, switch boards can be reciprocating along reference column 25 by chute 22c, and the reference column of present embodiment adopts cross recess good prospects screw to be installed on the change gear fixed head 40.
Also be provided with two location shrinkage pools that are complementary with pilot pin 26 on the change gear fixed head 40.Taper knob 21 is sleeved on the handle section 22a, and be provided with the installation through hole on the top of taper knob 21, the shank 26b of pilot pin 26 extends through the cavity 22d of handle section and the installation through hole on taper knob top, and be fixed on the taper knob by nut 24, pilot pin 26 can move in the cavity 22d of handle section 22a.On compression spring 23 suits and the pilot pin 26, and place between pilot pin 26 syringe needle 26a and the handle section 22a, under the effect of compression spring 23 elastic force, the syringe needle 26a of thimble 26 can be positioned in the shrinkage pool of location tightly.
The carrier gear group comprises intermeshing first carrier gear 12 and second carrier gear 13, and first carrier gear 12 and second carrier gear 13 are installed on the fanning strip 22b of switching device shifter 20, idler gear 14 places between the carrier gear combined exchange gear train, when the location status that changes switching device shifter 20, make thimble 26 syringe needle 26a place another location shrinkage pool from a location shrinkage pool, can change the engagement of carrier gear and mainshaft gear 11, and then change the rotation direction of lathe screw mandrel.Two engagements of carrier gear group and idler gear 14 and mainshaft gear 11 are respectively: first carrier gear 12 meshes with mainshaft gear and idler gear respectively, and second carrier gear 13 is in vacant state; Mesh with idler gear 14 and mainshaft gear 11 respectively with first carrier gear 12 and second carrier gear 13.Idler gear 14 is fixed on the change gear fixed head 40 by fixed axis bolt 31, and the change gear group is installed on the wheel fixed head 40 by change gear support 34.
Shown in Fig. 3 a and Fig. 3 b, in order to process different thread, the change gear group can have two kinds of structural forms, and the change gear group of every kind of structural form also can change the gear ratio between each gear, realizes processing the function of different thread.
Fig. 3 a is depicted as first kind of structural representation of change gear group, the change gear group of this structure comprise first change gear 15, the 4th change gear 18 and respectively with the 3rd change gear 17 of first change gear 15,18 engagements of the 4th change gear, and first change gear 15 is in-line gears with idler gear 14, and the 4th change gear 18 drives screw mandrel and rotates.
Fig. 3 b is depicted as first kind of structural representation of change gear group, the change gear group of this structure comprise first change gear 15, with second change gear 16 of first change gear 15 engagement, with coaxial the 3rd change gear 17 of second change gear 16 and the 4th change gear 18 that meshes with the 3rd change gear 17, described first change gear 15 is in-line gears with idler gear 14, and the 4th change gear 18 drives screw mandrel and rotates.
Preferably, main shaft 60 is provided with sensing gear 19 that is complementary with mainshaft gear 11 and the sensor 35 that is complementary with this sensing gear 19, can control the rotating speed of main shaft 60.
When following table is the processing different thread, the version of available change gear group and the combination of the number of teeth of each change gear:
The selection of change gear group during table one cutted thread
Introduce the operating procedure and the method that change lathe screw mandrel rotation direction by switching device shifter 20 below:
The first step was shut down before switch operation, and lathe spindle 60 is stopped operating;
In second step, hold taper knob 21, and thimble 26 syringe needle 26a are extracted from the shrinkage pool of location with suitable power;
The 3rd step, rotate switching device shifter 20, the chute 22c on the switch boards 22 is slided along reference column 25, and the syringe needle 26a of thimble 26 is aimed at another location shrinkage pool, decontrol taper knob 21, thimble 26 tops are positioned at this location shrinkage pool.
In conjunction with the accompanying drawings embodiment of the present utility model has been done detailed description above, but the utility model is not limited to above-mentioned embodiment, in the ken that affiliated technical field those of ordinary skill is possessed, can also under the prerequisite that does not break away from aim of the present invention, make various variations.
Claims (8)
1. Pulley mechanism that is applicable to small-sized lathe, comprise main shaft, mainshaft gear, switching device shifter, change gear fixed head and the gear changing group that is installed on the change gear fixed head, it is characterized in that, described gear changing group comprises the carrier gear group, idler gear and change gear group, described switching device shifter comprises handover operation mechanism and is installed on also can be around the switch boards of intermediate gear shaft rotation on the intermediate gear shaft, described carrier gear group comprises and being installed on the switch boards and intermeshing first carrier gear and second carrier gear, described first carrier gear and idler gear engagement also can be meshed with mainshaft gear, after the switching, described second carrier gear can mesh with mainshaft gear, and described first carrier gear and mainshaft gear disengagement; Described idler gear and change gear assembly merge drive lathe screw mandrel and rotate.
2. be applicable to the Pulley mechanism of small-sized lathe according to claim 1, it is characterized in that, described change gear group comprise first change gear, the 4th change gear and respectively with the 3rd change gear of first change gear, the engagement of the 4th change gear, described first change gear and idler gear are in-line gears.
3. be applicable to the Pulley mechanism of small-sized lathe according to claim 1, it is characterized in that, described change gear group comprise first change gear, with second change gear of first change gear engagement, with coaxial the 3rd change gear of second change gear and the 4th change gear that meshes with the 3rd change gear, described first change gear and idler gear are in-line gears.
4. be applicable to the Pulley mechanism of small-sized lathe as described in each as claim 1-3, it is characterized in that, described switch boards comprises the handle section that is the fanning strip that is wholely set and is provided with cavity, described handover operation mechanism comprises taper knob, pilot pin and compression spring, be provided with slide construction between described fanning strip and the change gear fixed head, described change gear fixed head is provided with two location shrinkage pools that are complementary with described pilot pin, described taper knob is set on the handle section, described pilot pin comprises shank and the syringe needle that is complementary with described location shrinkage pool, this shank extends through the handle section cavity and fixedlys connected with taper knob, described compression spring housing is contained on the pilot pin, and place between handle section cavity and the pilot pin syringe needle, described carrier gear group is installed on the fanning strip.
5. be applicable to the Pulley mechanism of small-sized lathe as claim 1-3 as described in each, it is characterized in that described main shaft is provided with sensing gear that is complementary with mainshaft gear and the sensor that is complementary with this sensing gear.
6. as being applicable to the Pulley mechanism of small-sized lathe as described in the claim 4, it is characterized in that described main shaft is provided with sensing gear that is complementary with mainshaft gear and the sensor that is complementary with this sensing gear.
7. as being applicable to the Pulley mechanism of small-sized lathe as described in the claim 4, it is characterized in that the reference column that described slide construction comprises the chute that is arranged on the fanning strip and is arranged on the change gear fixed head and is complementary with this chute.
8. as being applicable to the Pulley mechanism of small-sized lathe as described in the claim 4, it is characterized in that the reference column that described slide construction comprises the chute that is arranged on the change gear fixed head and is arranged on the fanning strip and is complementary with this chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200957467U CN202006380U (en) | 2011-04-02 | 2011-04-02 | Change gear mechanism suitable for mini-lathes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200957467U CN202006380U (en) | 2011-04-02 | 2011-04-02 | Change gear mechanism suitable for mini-lathes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202006380U true CN202006380U (en) | 2011-10-12 |
Family
ID=44748044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200957467U Expired - Fee Related CN202006380U (en) | 2011-04-02 | 2011-04-02 | Change gear mechanism suitable for mini-lathes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202006380U (en) |
-
2011
- 2011-04-02 CN CN2011200957467U patent/CN202006380U/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: 20111012 Termination date: 20170402 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |