CN204545615U - The micro-compensation synchronous threading knife handle of small dimension screw thread process - Google Patents
The micro-compensation synchronous threading knife handle of small dimension screw thread process Download PDFInfo
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- CN204545615U CN204545615U CN201520158467.9U CN201520158467U CN204545615U CN 204545615 U CN204545615 U CN 204545615U CN 201520158467 U CN201520158467 U CN 201520158467U CN 204545615 U CN204545615 U CN 204545615U
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Abstract
The utility model discloses the micro-compensation synchronous threading knife handle of a kind of small dimension screw thread process, relate to handle of a knife field, a kind of threading knife handle that effectively can compensate the error between machine tool feed pitch and tap lead is provided.The micro-compensation synchronous threading knife handle of small dimension screw thread process comprises holder main body, mandrel, connector, elastomer block and torque transfer arrangement; Core axle hole is provided with in holder main body; One end of mandrel insert core axle hole and with core axle hole matched in clearance, the other end of mandrel, for connecting screw tap, is provided with the connecting hole that radial direction runs through mandrel in mandrel; Connector is connected with holder main body and radial direction runs through core axle hole, and connector is positioned at connecting hole; Elastomer block is arranged between connecting hole and connector; Moment of torsion can be passed to mandrel by holder main body by torque transfer arrangement.Because having elastomer block, mandrel can move axially on a small quantity in core axle hole, and screw tap is moved axially on a small quantity, compensates error between machine tool feed pitch and tap lead.
Description
Technical field
The utility model relates to handle of a knife field, particularly relates to the micro-compensation synchronous threading knife handle of a kind of small dimension screw thread process.
Background technology
Rigid tapping is the function that numerical control machining center generally possesses, by the position coder on main shaft, can by the speed of mainshaft and axis feeding synchronization, and to mate specific thread pitch needs.It is light that rigid tapping has tool weight, compact conformation, working (machining) efficiency advantages of higher, is widely adopted in modern times processing.At present the main spring clip first-class rigidity clamping handle of a knife clamping screw tap that uses carries out rigid tapping, the screw tap after connection and have stronger rigidity between main shaft.
But rigid tapping can not make life of tap and accuracy of thread optimization, and its main cause is as follows:
1, machining center error.For numerical control machining center, lathe manufacturer generally only emphasizes the precision controlling of linear axes, as X-axis, Y-axis, and has only done positioning control as the main shaft of rotating shaft.In addition, the every rotating 360 degrees of general-purpose machining center main shaft is by 256 Pulse Width Control, and being equivalent to every pulse control intervals is 1.4 °.In screw thread process process, there are 1.4 ° in theory and control defect or inaccuracy.So theoretical error of the upper existence 1.4 ° of circumference, axially also just certainly exist corresponding theoretical error, this will cause screw tap axial force to strengthen.
2, screw tool error.According to GB/T968-2007 screw-tap threaded tolerance standard, for 0.4mm pitch, allow tap lead error ± 8 μm, measure length 12 tooth.This error directly causes pitch asynchronous with axis feeding, produces larger axis to power, accelerates screw tap wearing and tearing.
3, the impact of processing temperature change on pitch.In tapping process, environment temperature or processing produce heat, and tap length changes, and particularly in High-speed machining, variations in temperature can be more obvious.Tap length change causes tap lead to produce error, produces larger axis to power, accelerates screw tap wearing and tearing.
4, for the screw tap of M4 and following specification, because the intensity of screw tap itself is more weak, in process, the easier existence because of error causes stressed increasing and ruptures.
To sum up, if adopt spring clip first-class rigidity clamping handle of a knife clamping screw tap, screw tap can be made axially to be subject to extra tensile force or compression stress, the problems such as often cause screw tap easy to break, accuracy of thread is poor, form of thread defect.This patent is exactly a kind of novel rigid tapping solution proposed for small dimension thread tapping based on the problems referred to above.
Utility model content
The technical problems to be solved in the utility model is: provide a kind of micro-compensation synchronous threading knife handle of small dimension screw thread process that effectively can compensate error between machine tool feed pitch and tap lead.
In order to solve the problem, the technical scheme adopted is: the micro-compensation synchronous threading knife handle of small dimension screw thread process comprises holder main body, mandrel, connector, elastomer block and torque transfer arrangement; Core axle hole is provided with in holder main body; One end of mandrel insert core axle hole and with core axle hole matched in clearance, the other end of mandrel, for connecting screw tap, is provided with the connecting hole that radial direction runs through mandrel in mandrel; Connector is connected with holder main body and radial direction runs through core axle hole, and connector is positioned at connecting hole; Elastomer block is arranged between connecting hole and connector; Moment of torsion can be passed to mandrel by holder main body by torque transfer arrangement.
Further: the steel-ball groove that torque transfer arrangement comprises steel ball, is arranged at the steel ball slide rail on holder main body and is arranged on mandrel; Steel ball slide rail and steel-ball groove position correspondence; A steel ball part is positioned at steel ball slide rail, and another part is positioned at steel-ball groove.
Further: the micro-compensation synchronous threading knife handle of small dimension screw thread process comprises overcoat, an overcoat part to be sleeved on holder main body and to be connected with holder main body, and overcoat another part is sleeved on mandrel, is provided with sealing ring between overcoat and mandrel.
Further: the micro-compensation synchronous threading knife handle of small dimension screw thread process comprises locking nut and jump ring, the clamp spring hole being provided with taper for the inside, one end connecting screw tap of mandrel, jump ring is positioned at clamp spring hole, and locking nut is connected with mandrel thread and can axial compression jump ring.
The beneficial effects of the utility model are: because of the existence of elastomer block, and mandrel can move axially on a small quantity in core axle hole, thus screw tap is moved axially on a small quantity, compensate between machine tool feed pitch and tap lead and have error.Error between machine tool feed pitch and tap lead is compensated and can improves screw tap service life and screw processing quality.
Torque transfer arrangement is separated with pitch compensation mechanism (i.e. the general designation of elastomer block, connector and connecting hole) and is designed, steel ball transmitting torque is adopted to pass, the frictional force of steel ball movement in steel ball slide rail is very little, frictional dissipation is very low, avoid torque transfer arrangement to produce resistance to the mobile of screw tap, make pitch compensation mechanism can in time, stationary response.
The utility model mechanism is simple, compact, when realizing same function, is conducive to reducing handle of a knife volume, is particularly useful in the relatively little small dimension thread tapping of tapping torque.
Accompanying drawing explanation
Fig. 1 is the micro-compensation synchronous threading knife handle structure chart of small dimension screw thread process;
Fig. 2 is the A-A sectional view of Fig. 1;
Be labeled as in figure: holder main body 1, mandrel 2, elastomer block 3, connector 4, torque transfer arrangement 5, overcoat 6, steel ball 7, steel ball slide rail 8, clamp spring hole 9, screw tap 10, jump ring 11, locking nut 12, first sealing ring 13, circlip 14, second sealing ring 15, core axle hole 16, connecting hole 17, steel-ball groove 18.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
As depicted in figs. 1 and 2, the micro-compensation synchronous threading knife handle of small dimension screw thread process comprises holder main body 1, mandrel 2, connector 4, elastomer block 3 and torque transfer arrangement 5; Core axle hole 16 is provided with in holder main body 1; One end of mandrel 2 insert core axle hole 16 and with core axle hole 16 matched in clearance, the other end of mandrel 2, for connecting screw tap 10, is provided with the connecting hole 17 that radial direction runs through mandrel 2 in mandrel 2; Connector 4 is connected with holder main body 1 and radial direction runs through core axle hole 16, and connector 4 is positioned at connecting hole 17; Elastomer block 3 is arranged between connecting hole 17 and connector 4; Moment of torsion can be passed to mandrel 2 by holder main body 1 by torque transfer arrangement 5.
Because of the existence of elastomer block 3, mandrel 2 can move axially on a small quantity in core axle hole 16, thus screw tap 10 can be moved axially on a small quantity, compensates error between machine tool feed pitch and tap lead.Error between machine tool feed pitch and tap lead is compensated and can improves screw tap service life and screw processing quality.
Connector 4 can be pin, and connector 4 is connected by interference fit with holder main body 1.Connector 4 also can be bolt or screw, and connector 4 and holder main body 1 are threaded connection.The block rubber of elastomer block 3 can be shape be hollow cylinder, elastomer block 3 outer surface is connected by interference fit with connecting hole 17, and elastomer block 3 inner surface is connected by interference fit with connector 4.
Only rely on connector 4 and elastomer block 3 connecting mandrel 2 and holder main body 1, then transmitting torque weak effect, therefore need to arrange torque transfer arrangement 5.Torque transfer arrangement 5 should not hinder the movement of mandrel 2.Torque transfer arrangement 5 can be conventional key syndeton.The utility model recommends the concrete structure of torque transfer arrangement 5 as follows: the steel-ball groove 18 that torque transfer arrangement 5 comprises steel ball 7, is arranged at the steel ball slide rail 8 on holder main body 1 and is arranged on mandrel 2; Steel ball slide rail 8 and steel-ball groove 18 position correspondence; Steel ball 7 part is positioned at steel ball slide rail 8, and another part is positioned at steel-ball groove 18.Torque transfer arrangement 5 is separated with pitch compensation mechanism and is designed, steel ball 5 transmitting torque is adopted to pass, the frictional force of steel ball 5 movement in steel ball slide rail 7 is very little, frictional dissipation is very low, avoid the mobile of torque transfer arrangement 5 pairs of screw taps 10 to produce obvious resistance, make pitch compensation mechanism can in time, stationary response.
In order to avoid steel ball 7 comes off from steel ball slide rail 8 and steel-ball groove 18, and prevent outside iron filings and cooling fluid from entering in pitch compensation structure and torque transfer arrangement 6; The micro-compensation synchronous threading knife handle of small dimension screw thread process comprises overcoat 6, and overcoat 6 part to be sleeved on holder main body 1 and to be connected with holder main body 1, and overcoat 6 another part is sleeved on mandrel 2, is provided with the first sealing ring 13 between overcoat 6 and mandrel 2.The gap between holder main body 1 and mandrel 2 closed by overcoat 6, and steel ball 7 can be avoided to come off from steel ball slide rail 8 and steel-ball groove 18, and prevents outside iron filings and cooling fluid from entering in pitch compensation structure and torque transfer arrangement 5.Overcoat 6 can be as shown in Figure 1 with the connected mode of holder main body 1, connected by circlip 14, also can be threaded connection, above-mentioned two kinds of connected modes all have certain sealing effectiveness, but in order to reliably seal further, the second sealing ring 15 can be set between overcoat 6 and holder main body 1.First sealing ring 13 and the second sealing ring 15 can be all O RunddichtringOs.
As previously mentioned, mandrel 2 does not insert one end of core axle hole 16 for connecting screw tap 10.The utility model screw tap 10 connected mode is recommended as follows: the micro-compensation synchronous threading knife handle of small dimension screw thread process comprises locking nut 12 and jump ring 11, the clamp spring hole 9 being provided with taper for the inside, one end connecting screw tap of mandrel 2, jump ring 11 is positioned at clamp spring hole 9, locking nut 12 is threaded with mandrel 2 and can axial compression jump ring 11, jump ring 11 endoporus shrinks, thus clamping screw tap 10 shank.
Claims (5)
1. the micro-compensation synchronous threading knife handle of small dimension screw thread process, comprise holder main body (1), it is characterized in that: comprise mandrel (2), connector (4), elastomer block (3) and torque transfer arrangement (5); Core axle hole (16) is provided with in holder main body (1); One end of mandrel (2) insert core axle hole (16) and with core axle hole (16) matched in clearance, the other end of mandrel (2), for connecting screw tap (10), is provided with the connecting hole (17) that radial direction runs through mandrel (2) in mandrel (2); Connector (4) is connected with holder main body (1) and radial direction runs through core axle hole (16), and connector (4) is positioned at connecting hole (17); Elastomer block (3) is arranged between connecting hole (17) and connector (4); Moment of torsion can be passed to mandrel (2) by holder main body (1) by torque transfer arrangement (5).
2. the micro-compensation synchronous threading knife handle of small dimension screw thread process according to claim 1, is characterized in that: the steel-ball groove (18) that torque transfer arrangement (5) comprises steel ball (7), is arranged at the steel ball slide rail (8) on holder main body (1) and is arranged on mandrel (2); Steel ball slide rail (8) and steel-ball groove (18) position correspondence; Steel ball (7) part is positioned at steel ball slide rail (8), and another part is positioned at steel-ball groove (18).
3. the micro-compensation synchronous threading knife handle of small dimension screw thread process according to claim 2, it is characterized in that: comprise overcoat (6), overcoat (6) part is sleeved on holder main body (1) and goes up and be connected with holder main body (1), overcoat (6) another part is sleeved on mandrel (2), is provided with the first sealing ring (13) between overcoat (6) and mandrel (2).
4. the micro-compensation synchronous threading knife handle of small dimension screw thread process according to claim 3, is characterized in that: be provided with the second sealing ring (15) between overcoat (6) and holder main body (1).
5. the micro-compensation synchronous threading knife handle of small dimension screw thread process according to claim 4, it is characterized in that: comprise locking nut (12) and jump ring (11), the clamp spring hole (9) being provided with taper for the inside, one end connecting screw tap of mandrel (2), jump ring (11) is positioned at clamp spring hole (9), and locking nut (12) is threaded with mandrel (2) and can axial compression jump ring (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520158467.9U CN204545615U (en) | 2015-03-19 | 2015-03-19 | The micro-compensation synchronous threading knife handle of small dimension screw thread process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520158467.9U CN204545615U (en) | 2015-03-19 | 2015-03-19 | The micro-compensation synchronous threading knife handle of small dimension screw thread process |
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| CN204545615U true CN204545615U (en) | 2015-08-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421389A (en) * | 2019-07-17 | 2019-11-08 | 成都成林数控刀具有限公司 | A kind of tapping clamp device knife handle of the axial micro- compensation of band |
| CN113245645A (en) * | 2021-05-19 | 2021-08-13 | 山东金杰机械有限公司 | Micro-compensation synchronous tapping knife handle |
-
2015
- 2015-03-19 CN CN201520158467.9U patent/CN204545615U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421389A (en) * | 2019-07-17 | 2019-11-08 | 成都成林数控刀具有限公司 | A kind of tapping clamp device knife handle of the axial micro- compensation of band |
| CN110421389B (en) * | 2019-07-17 | 2024-03-15 | 成都成林数控刀具股份有限公司 | Tapping chuck knife handle with axial micro-compensation |
| CN113245645A (en) * | 2021-05-19 | 2021-08-13 | 山东金杰机械有限公司 | Micro-compensation synchronous tapping knife handle |
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| C14 | Grant of patent or utility model | ||
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Address after: Shuangliu District of Sichuan province 610207 Avenue Chengdu City West of West Port Economic Development Zone in Hong Kong in four No. 685 Patentee after: Sentai eng (Chengdu) CNC tool Limited by Share Ltd Address before: 610207 Sichuan city of Chengdu province Shuangliu County Southwest Airport Economic Development Zone No. 685 West Airport four Patentee before: Sentai eng (Chengdu) NC tool Ltd. |