CN201295852Y - Main shaft automatic tool changer of machine tool - Google Patents
Main shaft automatic tool changer of machine tool Download PDFInfo
- Publication number
- CN201295852Y CN201295852Y CNU2008201925565U CN200820192556U CN201295852Y CN 201295852 Y CN201295852 Y CN 201295852Y CN U2008201925565 U CNU2008201925565 U CN U2008201925565U CN 200820192556 U CN200820192556 U CN 200820192556U CN 201295852 Y CN201295852 Y CN 201295852Y
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- China
- Prior art keywords
- main shaft
- ring
- oil cylinder
- tool
- pressure ring
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- Expired - Fee Related
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Abstract
The utility model discloses a main shaft automatic tool changer which comprises a main shaft box body and a main shaft. The main shaft automatic tool changer is characterized in that a plurality of screws, a spring and an oil cylinder with a hollow piston are sequentially arranged outside the main shaft box body; the mains shaft penetrates in the hollow piston of the oil cylinder; a retaining ring is arranged at the handle part of the main shaft; a broaching tool assembly is arranged in a main shaft hole; and the outside of the main shaft is provided with an information transmitting ring and an induction switch and connected with a control power supply. Due to the flexible design, the main shaft can pass through the hollow piston; in tool withdrawing, the tool withdrawing force is converted into a main shaft inner force, a main shaft bearing can not bear additional strong tool withdrawing force so as to achieve the unloading effect and be beneficial to the service life of the bearing; and when the tool broaching force is as large as 2.5 times of the elasticity of a dish spring group, the requirement of heavy cut can be satisfied.
Description
Technical field
The utility model relates to the equipment component field, especially a kind of machine tool chief axis automatic tool changer.
Background technology
The main shaft automatic tool changer of general common machining center has several like this: 1. take off the cutter oil cylinder and be loaded on the main shaft afterbody, with the main shaft fixed connection, with main axis rotation, oil circuit inserts by swivel coupling, with or without broaching tool reinforcement structure, advantage is that to take off cutter power be main shaft internal force, can not be applied on the main shaft bearing, shortcoming is a swivel coupling seal request height, damages easily; 2. take off the cutter oil cylinder and be loaded on the main shaft afterbody, the connection of fixing with the main shaft casing or float, not with main axis rotation, the structure that connects of wherein floating can transfer main shaft internal force to taking off cutter power, and is not applied on the main shaft bearing, with or without broaching tool reinforcement structure.
The automatic tool changer of said structure all has such limitation: must be installed on the main shaft least significant end, spindle drive system must be installed on before the automatic tool changer as belt wheel, gear etc., is that design flexibility is made troubles to spindle drive like this.
Summary of the invention
The purpose of this utility model is that the solution tool changing device is the inconvenience that design flexibility brings to spindle drive, a kind of main shaft automatic tool changer of special proposition.
For this reason, the technical solution of the utility model is, the main shaft automatic tool changer, comprise main shaft casing, main shaft, it is characterized in that: at the external oil cylinder that is provided with a plurality of screw rods, spring, piston hollow successively of main spindle box, be installed with main shaft in the hollow piston of oil cylinder, the main shaft shank is provided with baffle ring, is provided with the broaching tool assembly in the spindle hole, and the main shaft outside is provided with sender ring, inductive switch and is connected to the control power supply.
Improvement to such scheme is: described broaching tool assembly inwardly is provided with pull bar, dish spring group, the following pressure ring that contains 120 ° of male cone (strobilus masculinus)s and arc groove end face, steel ball, middle pressure ring, push rod, upper press ring successively; Upper press ring is provided with the bearing pin of wearing main shaft side groove, also is provided with the bearing pin of wearing main shaft side groove on the middle pressure ring.
Beneficial effect:
The utility model main shaft therefrom oil cylinder hollow piston passes, and spindle drive is a flexible design; Withdrawing power is converted to main shaft internal force during withdrawing, and main shaft bearing can additionally not be subjected to powerful withdrawing power, reaches the unloading effect, favourable bearing life; Broach force is amplified to 2.5 times of dish spring group elastic force, can satisfy the needs of high-rate cutting.
Oil cylinder is installed on the main shaft casing by a plurality of screw rods and spring floating, do not contact during broaching tool position, main shaft place with rotary main shaft, whole cylinder rose after piston pushed up the broaching tool assembly during withdrawing, touched the main shaft upper baffle ring up to the oil cylinder body, and piston continues to stretch out promotion broaching tool bar and finishes withdrawing, withdrawing power is converted to main shaft internal force around here, main shaft bearing can additionally not be subjected to powerful withdrawing power, reaches the unloading effect, favourable bearing life, piston hollow, main shaft can therefrom be passed to connect power transmission shaft.
The broaching tool assembly is installed in the spindle hole, dish spring group promotes pressure ring and then promotes a plurality of steel balls along moving on the conical surface, and then by another pressure ring promotion broaching tool bar tension cutter, the conical surface adopts 120 degree cone angles, broach force can be amplified to 2.5 times of dish spring group elastic force, to satisfy the needs of high-rate cuttings such as milling.Its distribution circle diameter can change when steel ball moved, and the gap changes thereupon between steel ball, evenly distributed all the time for guaranteeing steel ball, guaranteed the spindle operation dynamic balancing, and the pressure ring end face processes the equally distributed radial deep-slotted chip breaker of circumference.
Two pins that pass main shaft side groove are housed on the broaching tool assembly pressure ring, and the withdrawing that takes off the cutter oil cylinder moves through this pin and is delivered to the broaching tool assembly.Two pins that pass main shaft side groove also are housed on another pressure ring of broaching tool assembly, are used for tangling the sender ring of main shaft outside, indicate broaching tool or withdrawing state by inductive switch.
Description of drawings
Fig. 1 is a structure cutaway view of the present utility model.
The specific embodiment
The utility model is to form so as shown in Figure 1:
This device is made of with other securing members, seal etc. other parts of following key: baffle ring 1, oil cylinder cover 2, piston 3, cylinder tube 4, screw rod 5, spring 6, main shaft 7, pin 8, upper press ring 9, bar 10, middle pressure ring 11, steel ball 12, taper-face ring 13, following pressure ring 14, butterfly spring group 15, pull bar 16, inductive switch 17, sender ring 18, inductive switch 19, lever displacement amplifying mechanism 20.Wherein form and take off the cutter oil cylinder, take off the cutter oil cylinder and be installed on spindle jacket or the casing, can move in the axial direction by screw rod 5, spring 6 by oil cylinder cover 2, piston 3, cylinder tube 4 and seal.Baffle ring 1 is fixedly installed on the main shaft, and playing floats takes off the position-limiting action of cutter oil cylinder top dead centre.Inductive switch 17, sender ring 18 are carried out broaching tool, the withdrawing state deixis of broaching tool assembly, provide lathe automatic run signal.Inductive switch 19, lever displacement amplifying mechanism 20 carried out and taken off cutter cylinder piston position deixis, and piston is in not and the revolving part contact position when guaranteeing spindle operation.Pin 8, upper press ring 9, bar 10, middle pressure ring 11, steel ball 12, taper-face ring 13, pressure ring 14, butterfly spring group 15, pull bar 16 are formed the broaching tool assemblies down, wherein sell 8 and play and be delivered to the effect of broaching tool assembly with taking off the motion of cutter oil cylinder.
Broaching tool course of action of the present utility model is such: take off cutter oil cylinder piston 3 and be in uppermost position in fig-ure, do not contact with the main axis rotation part; Butterfly spring group 15 is by pressure ring 14 under promoting, and then it is up along the conical surface of taper-face ring 13 to promote steel ball 12, pressure ring 11 during steel ball 12 promotes, and then pushing drawing rod 16 tension cutter handle of a knifes.Taper-face ring 13 conical surface angles 120 are spent, and broach force can be amplified to 2.5 times of dish spring group elastic force, can satisfy the needs of high-rate cutting.Sender ring 18 connects by two pins that pass main shaft side groove, moves indication broaching tool position signalling simultaneously with middle pressure ring 11.Middle pressure ring 11 end faces process the equally distributed radial deep-slotted chip breaker of circumference, guarantee that steel ball evenly distributes all the time, guarantees the spindle operation dynamic balancing.
Tool backlash movement process of the present utility model is such: it is descending to take off cutter oil cylinder piston 3, take off 6 rises of cutter oil cylinder compression spring after pushing up pin 8, oil cylinder cover 2 pushes up baffle ring 1 back main shaft and combines with taking off the cutter oil cylinder, and oil cylinder withdrawing power is converted to main shaft internal force, can not be delivered to main shaft bearing and bear.Oil cylinder piston 3 continues descending, pushing pin 8, upper press ring 9, bar 10, pressure ring 14 down in succession, 15 compressions of butterfly spring group, after eliminate in upper press ring 9 and middle pressure ring 11,16 axial gaps of pull bar, steel ball 12 has had descending spatial accommodation, oil cylinder piston 3 continues descending, and pushing pin 8, upper press ring 9, middle pressure ring 11, pull bar 16 are descending, thus the loosening cutter handle of a knife.Sender ring 18 connects by two pins that pass main shaft side groove, moves simultaneously with middle pressure ring 11, indicates loose cutter position signal.
Claims (2)
1, main shaft automatic tool changer, comprise main shaft casing, main shaft, it is characterized in that: at the external oil cylinder that is provided with a plurality of screw rods, spring, piston hollow successively of main spindle box, be installed with main shaft in the hollow piston of oil cylinder, the main shaft shank is provided with baffle ring, be provided with the broaching tool assembly in the spindle hole, the main shaft outside is provided with sender ring, inductive switch and is connected to the control power supply.
2, main shaft automatic tool changer according to claim 1 is characterized in that: described broaching tool assembly is provided with pull bar, dish spring group, the following pressure ring that contains 120 ° of male cone (strobilus masculinus)s and arc groove end face, steel ball, middle pressure ring, push rod, upper press ring successively to shank; Upper press ring is provided with the bearing pin of wearing main shaft side groove, also is provided with the bearing pin of wearing main shaft side groove on the middle pressure ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201925565U CN201295852Y (en) | 2008-11-13 | 2008-11-13 | Main shaft automatic tool changer of machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201925565U CN201295852Y (en) | 2008-11-13 | 2008-11-13 | Main shaft automatic tool changer of machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201295852Y true CN201295852Y (en) | 2009-08-26 |
Family
ID=41041813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201925565U Expired - Fee Related CN201295852Y (en) | 2008-11-13 | 2008-11-13 | Main shaft automatic tool changer of machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201295852Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001009A (en) * | 2010-10-22 | 2011-04-06 | 大连华根机械有限公司 | Automatic knife-forging unloading device for processing central main spindle |
| CN102485417A (en) * | 2010-12-06 | 2012-06-06 | 黄耀德 | Improved structure of spindle broach multiplication mechanism |
| CN102811836A (en) * | 2010-02-18 | 2012-12-05 | Gmtk多工序机械加工股份有限公司 | Equipment For The Exchange Of Replaceable Components In Machine Tools |
| CN104690585A (en) * | 2015-03-13 | 2015-06-10 | 浙江畅尔智能装备股份有限公司 | Sensing structure of machine tool spindle |
| CN106381490A (en) * | 2016-09-06 | 2017-02-08 | 兰州荣翔轨道交通科技有限公司 | Spring-gravity adjusting type high-energy micro-arc-spark deposition knife handle |
-
2008
- 2008-11-13 CN CNU2008201925565U patent/CN201295852Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102811836A (en) * | 2010-02-18 | 2012-12-05 | Gmtk多工序机械加工股份有限公司 | Equipment For The Exchange Of Replaceable Components In Machine Tools |
| CN102001009A (en) * | 2010-10-22 | 2011-04-06 | 大连华根机械有限公司 | Automatic knife-forging unloading device for processing central main spindle |
| CN102485417A (en) * | 2010-12-06 | 2012-06-06 | 黄耀德 | Improved structure of spindle broach multiplication mechanism |
| CN102485417B (en) * | 2010-12-06 | 2013-10-16 | 黄耀德 | Spindle broach multiplication mechanism |
| CN104690585A (en) * | 2015-03-13 | 2015-06-10 | 浙江畅尔智能装备股份有限公司 | Sensing structure of machine tool spindle |
| CN106381490A (en) * | 2016-09-06 | 2017-02-08 | 兰州荣翔轨道交通科技有限公司 | Spring-gravity adjusting type high-energy micro-arc-spark deposition knife handle |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20171113 |