CN2841206Y - Stage-less speed-changing bench drill - Google Patents
Stage-less speed-changing bench drill Download PDFInfo
- Publication number
- CN2841206Y CN2841206Y CN 200520124133 CN200520124133U CN2841206Y CN 2841206 Y CN2841206 Y CN 2841206Y CN 200520124133 CN200520124133 CN 200520124133 CN 200520124133 U CN200520124133 U CN 200520124133U CN 2841206 Y CN2841206 Y CN 2841206Y
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- China
- Prior art keywords
- belt wheel
- taper
- fixed
- sleeved
- shaft
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- Expired - Fee Related
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Abstract
The utility model relates to a stage-less speed changing bench drill which comprises an upright post, a selective headstock, an electric machine, a main shaft and a stage-less speed changing driving structure, wherein the stage-less speed changing driving structure comprises a driving conical upper half belt wheel, a driving conical lower half belt wheel, a compression spring, a driven conical lower half belt wheel, a driven conical upper half belt wheel, a shaft bumper, a pressing spring, an outer sleeve of a middle shaft, an inner sleeve of the middle shaft, a transitional conical upper half belt wheel sheathed on the inner sleeve of the middle shaft, a two-surface conical belt wheel fixed on the inner sleeve of the middle shaft, a transitional conical lower half belt wheel sheathed at the lower end of the inner sleeve of the middle shaft, a middle shaft in the inner sleeve of the middle shaft, a driving belt and a driven belt, wherein the driving conical upper half belt wheel and the driving conical lower half belt wheel are fixed on a shaft of the electric machine, and the driven conical lower half belt wheel and the driven conical upper half belt wheel are fixed on the main shaft. The upper part and the middle part of the inner sleeve of the middle shaft are respectively provided with two opposite slotted holes. An upper positioning pin and a lower positioning pin which are respectively penetrated out of the slotted holes at the upper part and the middle part and are respectively inserted in the transitional conical upper half belt wheel and the transitional conical lower half belt wheel are fixed on the middle shaft. A speed governing device is arranged on the middle shaft. The utility model can optionally and stably control a speed ratio to be constant. The installing position of the electric machine does not need to be moved downwards. The whole stage-less speed changing bench drill is compact and beautiful. The utility model can be used in families.
Description
Technical field
The utility model belongs to the bench drill technical field, more particularly relates to the improvement of stepless speed change bench drill.
Background technology
Traditional drilling machine mostly is step speed change.When needing speed change, be under dead ship condition, driving belt is moved on to another from one group of driving and driven belt pulley of cone pulley organize on the driving and driven belt pulley.Its gear ratio is limited several.Variable speed operation is also very loaded down with trivial details, time-consuming.
The applicant's 01268709.X, 02268449.2 and No. 200320106447.4 Chinese patent disclose the stepless speed changing mechanism of several bench drills.Their structures are simpler, realized infinitely variable speeds.200520087772.X number name be called the patent application of " speed adjusting gear of stepless speed change bench drill " proposed again a kind of can be arbitrarily, stably regulate, control the stepless speed change bench drill of speed ratio.But, the latter's two-stage infinitely variable speed structure need fluctuate because of the two sides conical pulley, and the position consistency of position need with second belt wheel of transition taper of fixing of active conical pulley is installed on the motor shaft, thereby the installation site of motor moves down, make complete machine neither compact, also not attractive in appearance.
Summary of the invention
The purpose of this utility model just is to overcome above-mentioned shortcoming and defect, and a kind of stepless speed change bench drill is provided.It is constant that it can arbitrarily, stably control a certain speed ratio, controls convenient, flexiblely, and speed regulating structure is simpler, and production cost is also lower.The installation site of its motor need not move down, and complete machine is compactness but also attractive in appearance not only.
In order to achieve the above object, the utility model comprises base, column, headstock, motor, main shaft, rack sleeve, drill chuck, infinitely variable speed gearing and electric switch.Infinitely variable speed gearing comprises the active taper upper half belt wheel that is fixed on the motor shaft upper end, be installed on the motor shaft and second belt wheel of taper initiatively slidably with key, be sleeved on the compression spring between motor shaft shoulder and second belt wheel of active taper on the motor shaft, be fixed on second belt wheel of driven taper on main shaft top, being installed in the main shaft upper end with key also can be along first belt wheel of driven taper of key slip, be fixed on the axle bumper of main shaft upper end, be sleeved on the stage clip between axle bumper and first belt wheel of driven taper on the main shaft, be fixed on the middle outer shaft sleeve on the headstock, overlap in the axis in being installed in bearing in the outer shaft sleeve, be sleeved on first belt wheel of transition taper of set upper side in the axis, be fixed on the two sides conical pulley that puts in the axis, be sleeved on second belt wheel of transition taper of cover lower end in the axis, be sleeved on the jackshaft in the cover in the axis, be installed in the initiatively taper active belt between half belt wheel and two sides conical pulley and first belt wheel of transition taper up and down, be installed in the driven belt between second belt wheel in two sides conical pulley and second belt wheel of transition taper and the driven taper, the top of cover and two relative slotted holes about the middle part respectively has in the axis are fixed with up and down two tops that pass cover in the axis respectively and middle part slotted hole and insert respectively in the transition taper on the jackshaft, the alignment pin of second belt wheel.
Spindle unit comprises that top has the axostylus axostyle of spline and is sleeved on main shaft on the axostylus axostyle with spline.
The utility model is work like this:
When jackshaft being moved up with the rotation speed regulator, drive on first belt wheel of transition taper by alignment pin and to move, make in the spacing between first belt wheel of transition taper and the two sides conical pulley increase, the spacing between two sides conical pulley and second belt wheel of transition taper reduces.Accordingly, initiatively the spacing between upper and lower half belt wheel of taper reduces, and the spacing between second belt wheel increases in the driven taper.So the speed ratio of two stage conical belt wheel stepless speed change device will increase, that is the rotating speed of bench drill increases stepless continuous.When jackshaft moved down, situation was opposite, and the speed ratio of two stage conical belt wheel stepless speed change device will reduce, that is the rotating speed of bench drill reduces stepless continuous.When the handle of rotation speed regulator was positioned at certain invariant position, a certain specific speed ratio was also stablized constant.
Speed adjusting gear is installed on the jackshaft.Speed adjusting gear comprise with bearing be installed in the jackshaft lower end and have the screw of tooth cover, rigid bearing inner ring lower edge and the jackshaft lower end of outer tooth bar, have thin neck and externally threaded tooth axle and be installed in headstock with the outer tooth bar engagement of tooth cover and outer end and the tooth axle on the rotation speed regulator.
The rotation speed regulator comprises on the thin neck that is sleeved on gear shaft and is fixed on packing ring on the headstock, is sleeved on spill spin block on the thin neck of tooth axle with key, is sleeved on dish spring on the thin neck, is positioned at spill spin block and dish spring outside and is fastened on the nut on the thin neck external screw thread and is fixed on handle on the spill spin block.
The operation principle of speed adjusting gear and rotation speed regulator is called the patent application formerly of " speed adjusting gear of stepless speed change bench drill " with the 200520087772.X name.
Task of the present utility model comes to this and finishes.
It is constant that the utility model can arbitrarily, stably be controlled a certain speed ratio, controls convenient, flexiblely, and speed regulating structure is simpler, and production cost is also lower.The installation site of its motor need not move down, and complete machine is compactness but also attractive in appearance not only.Can be widely used in family, individual workship etc. locates.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the partial enlarged drawing of Fig. 2.
The specific embodiment
Embodiment 1.A kind of stepless speed change bench drill is as Fig. 1～shown in Figure 3.It comprises base, column 1, headstock 2, motor 3, spindle unit 4, rack sleeve, drill chuck, infinitely variable speed gearing and electric switch.Infinitely variable speed gearing comprises the active taper upper half belt wheel 6 that is fixed on motor shaft 5 upper ends, be installed on the motor shaft 5 and second belt wheel 7 of taper initiatively slidably with key, be sleeved on the compression spring 8 between motor 3 shaft shoulders and second belt wheel 7 of active taper on the motor shaft 5, be fixed on second belt wheel 10 of driven taper on main shaft 9 tops, being installed in main shaft 9 upper ends with key also can be along first belt wheel 11 of driven taper of key slip, be fixed on the axle bumper 12 of main shaft 9 upper ends, be sleeved on the stage clip 13 between axle bumper 12 and first belt wheel 11 of driven taper on the main shaft 9, be fixed on the middle outer shaft sleeve 14 on the headstock 2, overlap 15 in the axis in being installed in bearing in the outer shaft sleeve 14, be sleeved on first belt wheel 16 of transition taper of cover 15 upper ends in the axis, be fixed on the two sides conical pulley 17 on the cover 15 in the axis, be sleeved on second belt wheel 18 of transition taper of cover 15 lower ends in the axis, be sleeved on the jackshaft 19 in the cover 15 in the axis, be installed in initiatively taper up and down half belt wheel 6 and 7 and two sides conical pulley 17 and first belt wheel 16 of transition taper between active belt 20, be installed in the driven belt 21 between second belt wheel 11 and 10 in second belt wheel 18 of two sides conical pulley 17 and transition taper and the driven taper.The top of cover 15 and two relative slotted holes 22 and 23 about the middle part respectively has in the axis are fixed with up and down two tops that pass cover 15 in the axis respectively and middle part slotted hole 22 and 23 and insert the alignment pin 24 and 25 of upper and lower half belt wheel 16 of transition taper and 18 respectively on the jackshaft 19.Spindle unit 26 comprises that top has the axostylus axostyle 4 of spline and is sleeved on main shaft 9 on the axostylus axostyle 4 with spline.
On the jackshaft 19 speed adjusting gear is installed.Speed adjusting gear comprise with bearing be installed in jackshaft 19 lower ends and have the screw 28 of tooth cover 27, rigid bearing inner ring lower edge and jackshaft 19 lower ends of outer tooth bar, have thin neck and externally threaded tooth axle 29 and be installed in headstock 2 with the outer tooth bar engagement of tooth cover 27 and outer end and tooth axle 29 on the rotation speed regulator.
The rotation speed regulator comprises on the thin neck that is sleeved on tooth axle 29 and is fixed on packing ring 30 on the headstock 2, is sleeved on spill spin block 31 on the thin neck of tooth axle 29 with key, is sleeved on dish spring 33 on the thin neck, is positioned at spill spin block 31 and dish spring 33 outsides and is fastened on the nut 34 on the thin neck external screw thread and is fixed on handle 32 on the spill spin block 31.
It is constant that embodiment 1 can arbitrarily, stably control a certain speed ratio, controls convenient, flexiblely, and speed regulating structure is simpler, and production cost is also lower.The installation site of its motor need not move down, and complete machine is compactness but also attractive in appearance not only.Can be widely used in family, individual workship etc. locates.
Claims (3)
1. stepless speed change bench drill, comprise base, column, headstock, motor, spindle unit, rack sleeve, infinitely variable speed gearing, it is characterized in that infinitely variable speed gearing comprises the active taper upper half belt wheel that is fixed on the motor shaft upper end, be installed in second belt wheel of active taper on the motor shaft with key, be sleeved on the compression spring that is positioned on the motor shaft below second belt wheel of initiative taper shape, be fixed on second belt wheel of driven taper on main shaft top, be installed in first belt wheel of driven taper of main shaft upper end with key, be fixed on the axle bumper of main shaft upper end, be sleeved on and be positioned at first stage clip above belt wheel of driven taper on the main shaft, be fixed on the middle outer shaft sleeve on the headstock, overlap in the axis in being installed in bearing in the outer shaft sleeve, be sleeved on first belt wheel of transition taper of set upper side in the axis, be fixed on the two sides conical pulley that puts in the axis, be sleeved on second belt wheel of transition taper of cover lower end in the axis, be sleeved on the jackshaft in the cover in the axis, be installed in the initiatively taper active belt between half belt wheel and two sides conical pulley and first belt wheel of transition taper up and down, be installed in the driven belt between second belt wheel in two sides conical pulley and second belt wheel of transition taper and the driven taper, the top of cover and two relative slotted holes about the middle part respectively has in the axis are fixed with up and down two tops that pass cover in the axis respectively and middle part slotted hole and insert respectively in the transition taper on the jackshaft, the alignment pin of second belt wheel.
2. according to the described stepless speed change bench drill of claim 1, it is characterized in that on the said jackshaft speed adjusting gear being installed, speed adjusting gear comprise with bearing be installed in the jackshaft lower end and have the screw of tooth cover, rigid bearing inner ring lower edge and the jackshaft lower end of outer tooth bar, have thin neck and externally threaded tooth axle and be installed in headstock with the outer tooth bar engagement of tooth cover and outer end and the tooth axle on the rotation speed regulator.
3. according to claim 1 or 2 described stepless speed change bench drills, it is characterized in that said rotation speed regulator comprises on the thin neck that is sleeved on gear shaft and is fixed on packing ring on the headstock, is sleeved on spill spin block on the thin neck of tooth axle with key, is sleeved on dish spring on the thin neck, is positioned at spill spin block and dish spring outside and is fastened on the nut on the thin neck external screw thread and is fixed on handle on the spill spin block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520124133 CN2841206Y (en) | 2005-11-07 | 2005-11-07 | Stage-less speed-changing bench drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520124133 CN2841206Y (en) | 2005-11-07 | 2005-11-07 | Stage-less speed-changing bench drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2841206Y true CN2841206Y (en) | 2006-11-29 |
Family
ID=37445107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520124133 Expired - Fee Related CN2841206Y (en) | 2005-11-07 | 2005-11-07 | Stage-less speed-changing bench drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2841206Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518768A (en) * | 2011-12-29 | 2012-06-27 | 长安大学 | Reversibly rotating speed-changing anisotropic output three-shaft operating device |
| CN108326436A (en) * | 2018-01-25 | 2018-07-27 | 海宁市锦新轴承有限公司 | A kind of high end digital mold production equipment |
-
2005
- 2005-11-07 CN CN 200520124133 patent/CN2841206Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518768A (en) * | 2011-12-29 | 2012-06-27 | 长安大学 | Reversibly rotating speed-changing anisotropic output three-shaft operating device |
| CN102518768B (en) * | 2011-12-29 | 2014-07-30 | 长安大学 | Reversibly rotating speed-changing anisotropic output three-shaft operating device |
| CN108326436A (en) * | 2018-01-25 | 2018-07-27 | 海宁市锦新轴承有限公司 | A kind of high end digital mold production equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |