CN203156071U - Automatic knife rest - Google Patents
Automatic knife rest Download PDFInfo
- Publication number
- CN203156071U CN203156071U CN2013200637519U CN201320063751U CN203156071U CN 203156071 U CN203156071 U CN 203156071U CN 2013200637519 U CN2013200637519 U CN 2013200637519U CN 201320063751 U CN201320063751 U CN 201320063751U CN 203156071 U CN203156071 U CN 203156071U
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- CN
- China
- Prior art keywords
- tool
- knife rest
- post structure
- pin
- rotating shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Automatic Tool Replacement In Machine Tools (AREA)
Abstract
The utility model discloses an automatic knife rest. A rotating shaft is arranged in a knife rest base of the automatic knife rest through a bearing in a rotating and penetrating mode. A worm wheel is assembled on the rotating shaft in a rotating-stopping mode, and a worm is meshed with the worm wheel in a transmission mode and is assembled on the knife rest base in a rotating mode. A knife rest body is sleeved on the portion, penetrating through the knife rest base, of the rotating shaft. An internal thread structure is arranged in the inner hole of the knife rest body, and an external thread structure matched with the interior thread structure is arranged on the rotating shaft. A rotating-stopping pin is fixedly arranged on the knife rest body. A rotating-stopping groove is formed in the rotating shaft in the axial direction, and the rotating-stopping pin is arranged in the rotating-stopping groove in a sliding and inserting mode. The knife rest base and the end surface of the knife rest body are provided with mutually-meshed positioning teeth in a sliding and dropping preventing mode. The end surface of the knife rest body is provided with a positioning pin, wherein the positioning pin is matched with a positioning groove formed in the end surface of the knife rest base in a positioning mode when the knife rest body is inverted. A reset spring is arranged between the inner end of the positioning pin and the knife rest body. A slope is arranged at the lower end of the positioning pin and is disconnected from the positioning groove in the knife rest base when the knife rest body rotates in the forward direction. By the adoption of the positioning teeth, the automatic knife rest is good in positioning effect.
Description
Technical field
The utility model relates to a kind of automatic knife rack that is used on the Digit Control Machine Tool.
Background technology
On Digit Control Machine Tool, knife rest is that motion is frequent, the parts of the complexity of structure, knife rest is restricting the automaticity of Digit Control Machine Tool to a certain extent, because requirements of one's work, this type of knife rest is generally directly controlled by control system, knife rest can be finished automatically and lift, revolution, bit selecting, descend, location and a series of action that compresses, automatic knife rack of the prior art generally all comprises tool rest bracket, in tool rest bracket, be equipped with rotating shaft by the bearing rotation, spline is equipped with worm gear in the rotating shaft, also is rotatably equipped with the worm screw with the worm gear engaged transmission on the tool rest bracket, and rotating shaft passes on the part of tool rest bracket and is arranged with tool-post structure, rotating shaft drives tool-post structure by pin and rotates, after rotateing in place, position by pin, because the intensity of pin is less, locating effect is bad, poor stability.
The utility model content
The purpose of this utility model provides a kind of automatic knife rack, and is bad to solve automatic knife rack locating effect of the prior art, the problem of poor stability.
In order to realize above purpose, the utility model adopts following technical scheme: a kind of automatic knife rack, comprise tool rest bracket, be equipped with rotating shaft by the bearing rotation in the tool rest bracket, spline is equipped with worm gear in the rotating shaft, also be rotatably equipped with the worm screw with the worm gear engaged transmission on the tool rest bracket, rotating shaft passes on the part of tool rest bracket and is arranged with tool-post structure, be provided with female thread structure in the endoporus of described tool-post structure, described rotating shaft is provided with the external thread structure that cooperates with female thread structure, be set with the spline pin on the tool-post structure, offer the spline groove in the rotating shaft vertically, the spline pin slides and is plugged in the spline groove, the end face of tool rest bracket and tool-post structure is provided with intermeshing positioning tooth, the slip anticreep is provided with the locating slot of offering with the end face of tool rest bracket and locatees the alignment pin that cooperates on the end face of described tool-post structure when tool-post structure reverses, be provided with back-moving spring between the inner of alignment pin and the tool-post structure, the inclined-plane that the lower end of alignment pin is provided with when tool-post structure just changes and the locating slot of tool rest bracket is thrown off.
Described spline pin is arranged on the tool-post structure by first blind hole structure that arranges on the tool-post structure, is provided with top pressure spring between the bottom of the inner of spline pin and first blind hole structure, and the outer end of spline pin cooperates with the bottom land roof pressure of spline groove.
Described alignment pin is arranged on the tool-post structure by second blind hole structure on the end face that is arranged on tool-post structure, and described back-moving spring is between the bottom of the inner of alignment pin and second blind hole structure.
Described alignment pin cooperates with the tool-post structure anticreep by disconnecting prevention structure, and described disconnecting prevention structure comprises the axially extended stopper slot of offering on the side face of alignment pin, is set with the spacer pin that stretches into stopper slot and be slidingly matched with stopper slot on the tool-post structure.
The end face of tool rest bracket of the present utility model and tool-post structure is provided with intermeshing positioning tooth, when forwarding the cutter of appointment to when tool-post structure, alignment pin enters under the effect of back-moving spring in the locating slot will carry out coarse positioning, will send the instruction that motor reverses in this while Hall switch, make motor begin counter-rotating.Tool-post structure can not rotate under the restriction of alignment pin, effect lower slide cognition in rotating shaft vertically falls in this position, positioning tooth on whereabouts back tool rest body and the tool rest bracket will mesh, realize the accurate location between tool rest bracket and the tool-post structure, the utility model is located by positioning tooth, good positioning effect, stability is strong.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the utility model embodiment;
Fig. 2 is the B-B cutaway view of Fig. 1.
The specific embodiment
A kind of embodiment of automatic knife rack, in Fig. 1 and Fig. 2, be equipped with rotating shaft 2 in its tool rest bracket 1, be provided with bearing between rotating shaft 2 and the tool rest bracket 1, rotating shaft 2 is rotated assembling with tool rest bracket 1 by bearing, and spline is equipped with worm gear 3 in the rotating shaft 2, also is rotatably equipped with worm screw 4 on the tool rest bracket 1, worm screw 4 and worm gear 3 engaged transmission, worm screw 4 is used for being in transmission connection with motor.Rotating shaft 2 passes on the part of tool rest bracket 1 and is arranged with tool-post structure 5, in the endoporus of tool-post structure 5, be provided with female thread structure, fixed cover is provided with screw set 6 in the relevant position of rotating shaft 2, and the outer peripheral face of screw set 6 is provided with the external thread structure of female thread structure engaged transmission.Offer first blind hole structure at tool-post structure 5, the spline pin slides and is plugged in first blind hole structure, is provided with top pressure spring between the bottom of the inner of spline pin 7 and first blind hole structure, and spline pin 7 stretches to rotating shaft.Be provided with transposition cover 8 at the relevant position of rotating shaft 2 fixed cover, offer on the transposition cover 8 and offer the spline groove vertically, spline pin 7 slides and is plugged in the spline groove, and the outer end of spline pin 7 cooperates with the bottom land roof pressure of spline groove.Tool rest bracket 1 is provided with intermeshing positioning tooth with the end face of tool-post structure 5, when being provided with in tool-post structure 5 counter-rotatings, slip anticreep on the end face of tool-post structure 5 locatees the alignment pin 9 that cooperates with the locating slot that the end face of tool rest bracket 1 is offered, offer second blind hole structure on the end face of tool-post structure 5, be provided with back-moving spring 10 between the bottom of the inner of alignment pin 9 and second blind hole structure, the inclined-plane that the lower end of alignment pin 9 is provided with when tool-post structure just changes and the locating slot of tool rest bracket is thrown off.Axially extended stopper slot in that the side face of alignment pin 9 is offered is set with spacer pin 11 at tool-post structure 5, and spacer pin 11 stretches in the stopper slot and with stopper slot and is slidingly matched.
External thread structure in the present embodiment and spline groove also can be set directly in the rotating shaft.
The course of work of present embodiment is as follows:
At first send the tool changing instruction by numerical control device, stepper motor starts, just changes, and makes worm shaft begin to rotate by the flat key box coupling, rotates thereby drive worm gear.Because worm gear and rotating shaft link together, therefore also can rotate together, the external thread structure of the screw set of fixing in the female thread structure of tool-post structure and the rotating shaft cooperates.When worm gear begins to rotate because on the tool-post structure and the ingear state of positioning tooth of tool rest bracket, and the screw set axial restraint, at this moment tool-post structure will on move and lift.
After tool-post structure was raised up to certain distance, positioning tooth will be thrown off, and when positioning tooth is thrown off fully, because the spline pin cooperates with the spline groove, rotating shaft will drive tool-post structure and begin to forward to.
When tool-post structure forwarded the cutter of program appointment to, alignment pin entered in the locating slot under the effect of back-moving spring, and meanwhile Hall switch will send the instruction of motor counter-rotating, made motor begin counter-rotating.Tool-post structure can not rotate under the restriction of alignment pin, and tool-post structure can begin vertically to fall in this position, will realize the engagement between the end face tooth engagement on tool-post structure and the tool rest bracket like this, thereby realizes the accurate location between tool-post structure and the tool rest bracket.
Claims (4)
1. automatic knife rack, comprise tool rest bracket, be equipped with rotating shaft by the bearing rotation in the tool rest bracket, spline is equipped with worm gear in the rotating shaft, also be rotatably equipped with the worm screw with the worm gear engaged transmission on the tool rest bracket, rotating shaft passes on the part of tool rest bracket and is arranged with tool-post structure, it is characterized in that: be provided with female thread structure in the endoporus of described tool-post structure, described rotating shaft is provided with the external thread structure that cooperates with female thread structure, be set with the spline pin on the tool-post structure, offer the spline groove in the rotating shaft vertically, the spline pin slides and is plugged in the spline groove, the end face of tool rest bracket and tool-post structure is provided with intermeshing positioning tooth, the slip anticreep is provided with the locating slot of offering with the end face of tool rest bracket and locatees the alignment pin that cooperates on the end face of described tool-post structure when tool-post structure reverses, be provided with back-moving spring between the inner of alignment pin and the tool-post structure, the inclined-plane that the lower end of alignment pin is provided with when tool-post structure just changes and the locating slot of tool rest bracket is thrown off.
2. automatic knife rack according to claim 1, it is characterized in that: described spline pin is arranged on the tool-post structure by first blind hole structure that arranges on the tool-post structure, be provided with top pressure spring between the bottom of the inner of spline pin and first blind hole structure, the outer end of spline pin cooperates with the bottom land roof pressure of spline groove.
3. automatic knife rack according to claim 2, it is characterized in that: described alignment pin is arranged on the tool-post structure by second blind hole structure on the end face that is arranged on tool-post structure, and described back-moving spring is between the bottom of the inner of alignment pin and second blind hole structure.
4. automatic knife rack according to claim 3, it is characterized in that: described alignment pin cooperates with the tool-post structure anticreep by disconnecting prevention structure, described disconnecting prevention structure comprises the axially extended stopper slot of offering on the side face of alignment pin, is set with the spacer pin that stretches into stopper slot and be slidingly matched with stopper slot on the tool-post structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200637519U CN203156071U (en) | 2013-02-05 | 2013-02-05 | Automatic knife rest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200637519U CN203156071U (en) | 2013-02-05 | 2013-02-05 | Automatic knife rest |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203156071U true CN203156071U (en) | 2013-08-28 |
Family
ID=49017295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200637519U Expired - Fee Related CN203156071U (en) | 2013-02-05 | 2013-02-05 | Automatic knife rest |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203156071U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105798336A (en) * | 2016-06-07 | 2016-07-27 | 于法周 | Novel tool rest device special for lathe |
-
2013
- 2013-02-05 CN CN2013200637519U patent/CN203156071U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105798336A (en) * | 2016-06-07 | 2016-07-27 | 于法周 | Novel tool rest device special for lathe |
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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: 20130828 Termination date: 20150205 |
|
| EXPY | Termination of patent right or utility model |