CN202224996U - Brake gear for spindle of rotary tailstock - Google Patents
Brake gear for spindle of rotary tailstock Download PDFInfo
- Publication number
- CN202224996U CN202224996U CN2011203866648U CN201120386664U CN202224996U CN 202224996 U CN202224996 U CN 202224996U CN 2011203866648 U CN2011203866648 U CN 2011203866648U CN 201120386664 U CN201120386664 U CN 201120386664U CN 202224996 U CN202224996 U CN 202224996U
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- face
- piston
- tailstock
- brake
- rear end
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Abstract
The utility model discloses a brake gear for a spindle of a rotary tailstock, which belongs to parts of numerical-control machine tools. An existing brake gear of a spindle of a rotary tailstock has shortcomings that the brake gear of the rotary tailstock is large and complicated in structure, poor in action flexibility, low in brake torque and poor in brake reliability. The brake gear comprises a hydraulic cylinder, a movable brake pad and a coupled wheel, and is characterized in that a piston of the hydraulic cylinder is inserted in an inner cavity of a cylinder body and is hollow and cylindrical, the front end surface of the piston is opposite to the rear end surface of a tailstock body of the rotary tailstock, the movable brake pad is mounted on the coupled wheel fixedly connected with the spindle of the rotary tailstock and is positioned between the front end surface of the piston and the rear end surface of the tailstock body, gaps are respectively reserved between the movable brake pad and the front end surface of the piston and between the movable brake pad and the rear end surface of the tailstock body, and the piston is driven to reset by a spring mounted on the cylinder body. The high-thrust cylindrical piston type cylinder is used for providing brake driving force, braking is realized by the aid of fitting friction of the movable brake pad and a fixed brake pad, brake torque is high, and brake flexibility and reliability are high.
Description
Technical field
The utility model belongs to Digit Control Machine Tool part field, and is especially relevant with rotation tailstock spindle brake gear.
Background technology
The rotation tailstock is the four-axis mounting that is used to install workpiece in the multi-shaft interlocked machining center, requires to have the accurate control that the self-actuating brake function realizes workpiece motion s.The automatic brake mechanism of traditional processing center rotation tailstock adopts hydraulic mechanism, mainly is made up of a plurality of small oil tanks and a high rigidity brake wheel, and the brake wheel fixed cover is loaded on tailstock spindle; The small oil tank cylinder body is fixed on the tailstock body; Tailstock spindle is installed on the spindle hole on the tailstock body through bearings, and in the time of need braking tailstock spindle, the small oil tank piston stretches out cylinder body; And abut to brake wheel, utilize the frictional force of piston and brake wheel to realize braking brake.Such brake gear brake torque is little, and discontinuity equalization is easy to generate axial runout, the brake poor reliability, and a plurality of small oil tank response times are difficult to unified, cause brake sensitivity not high, and structure is numerous and jumbled.
The utility model content
The purpose of the utility model is exactly that existing rotation tailstock brake gear structure is numerous and jumbled, action sensitivity is not high, brake torque is little, the defective of brake poor reliability, proposes the rotation tailstock spindle brake gear that a kind of reliability is high, action sensitivity is high, brake torque is big in order to overcome.
For this reason, the utility model adopts following technical scheme: rotation tailstock spindle brake gear comprises hydraulic jack; It is characterized in that: described brake gear also comprises moving brake block, coupled wheel; The inner chamber of cylinder block stage casing internal diameter of described hydraulic jack forms step end face greater than the back segment internal diameter, and the piston stage casing external diameter of hydraulic jack forms the backward step end face greater than the back segment external diameter; Piston leading portion external diameter is less than the stage casing external diameter; Form the front step end face, the backward step end face of the step end face of inner chamber of cylinder block and piston is formed hydraulic cavities relatively, and this hydraulic cavities is connected with pressure oil-source through pipe joint; Described piston hollow is tubular; Its front end face is relative with the tailstock body rear end face of rotation tailstock; Described coupled wheel is fixedly connected with the rotation tailstock spindle; Described moving brake block is installed on the coupled wheel, and between described piston nose face and tailstock body rear end face, all gapped between moving brake block and piston nose face, the tailstock body rear end face; Described hydraulic jack inner chamber of cylinder block leading portion internal diameter is less than the stage casing internal diameter; The bulge loop of bending in forming; Axial hole is set on the bulge loop, and putting spring in the axial hole, axial hole front end are screwed stop screw spring are carried out axial limiting; Spring rear end is resisted against the front step end face of described piston, the compression elasticity through spring be piston after move to reset driving force be provided.
As to technique scheme replenish and perfect, the utility model also comprises following technical characterictic.
Be installed with fixedly brake block on the described tailstock body rear end face,, increase frictional force with described moving brake block matched in clearance.
Between described hydraulic jack cylinder body and the piston Front oil seal and Rear oil seal are set, the hydraulic cavities of oil cylinder is played the enhancing sealing function.
Described cylinder block is made up of front jar sheath and back cylinder sleeve butt joint, and the front end face of back cylinder sleeve is formed hydraulic cavities as the step end face and the described piston backward step end face of described inner chamber of cylinder block.
Described back cylinder sleeve rear end face is equipped with cylinder cover, and oil cylinder is sealed.
When the utility model uses; The oil cylinder hydraulic chamber is connected with pressure oil-source through pipe joint, when carrying out brake, injects hydraulic oil to hydraulic cavities; The reach of promotion piston; The piston roof pressure moves brake block, and moving brake block produces miniature deformation and presses against fixedly brake block, utilizes frictional resistance that the brake block band is stopped operating with the rotation tailstock spindle; After the rotation tailstock spindle stops operating, drain the oil in the oil cylinder hydraulic chamber, and piston is homing under the spring force effect, moving brake block reinstatement.
Use the utility model can reach following beneficial effect: the utility model adopts high thrust trunk-piston formula oil cylinder as the brake driving force, adopts moving brake block and fixedly brake block friction fit realization brake, and brake torque is big, and brake sensitivity and reliability are high.
Description of drawings
Fig. 1 is the front view of the utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
The specific embodiment
Be described in detail below in conjunction with the specific embodiment of accompanying drawing the utility model.
Like Fig. 1, shown in Figure 2, the utility model comprises hydraulic jack, moving brake block 14, fixedly brake block 15 and coupled wheel 8, and the cylinder body of hydraulic jack is docked with back cylinder sleeve 11 by front jar sheath 12 to be formed; Between the interface of front jar sheath 12 and back cylinder sleeve 11 sealing ring 5 is set; Front jar sheath 12 inner chamber leading portion internal diameters are less than the back segment internal diameter, curved bulge loop in front jar sheath inner chamber front end forms, and back cylinder sleeve internal diameter is less than front jar sheath back segment internal diameter; Back cylinder sleeve 11 front end faces are as the step end face of inner chamber of cylinder block; The piston 7 stage casing external diameters of hydraulic jack form the backward step end face greater than the back segment external diameter, and piston 7 leading portion external diameters form the front step end face less than the stage casing external diameter; The backward step end face of the front end face of back cylinder sleeve 11 and piston 7 is formed hydraulic cavities relatively, and this hydraulic cavities is connected with pressure oil-source through pipe joint; Piston 7 hollows are tubular; Its front end face is relative with tailstock body 2 rear end faces of rotation tailstock; Fixedly brake block 15 is installed on the rear end face of the tailstock body 2 that rotates tailstock, and coupled wheel 8 is fixedly connected with the rotation tailstock spindle that rotation tailstock 1 is installed, and moving brake block 14 is installed on the coupled wheel 8; And at the front end face of piston 7 and fixedly between the brake block 15, the front end face of moving brake block 14 and piston 7, fixedly all gapped between the brake block 15; On the bulge loop of front jar sheath 12 front ends axial hole is set; Putting spring 13 in the axial hole; The axial hole front end is screwed stop screw spring 13 is carried out axial limiting, and spring 13 rear ends are resisted against the front step end face of piston 7, the compression elasticity through spring 13 be piston 7 after move to reset driving force be provided; Front oil seal 3 and spacing with Front oil seal end cap 4 is set between front jar sheath 12 and the piston 7, Rear oil seal 6 and spacing with Rear oil seal end cap 10 is set between back cylinder sleeve 11 and the piston 7; Back cylinder sleeve 11 rear end faces are equipped with cylinder cover 9.
Claims (5)
1. rotate the tailstock spindle brake gear; Comprise hydraulic jack, it is characterized in that: described brake gear also comprises moving brake block (14), coupled wheel (8), and the inner chamber of cylinder block stage casing internal diameter of described hydraulic jack is greater than the back segment internal diameter; Form step end face; The piston of hydraulic jack (7) stage casing external diameter forms the backward step end face greater than the back segment external diameter, and piston (7) leading portion external diameter forms the front step end face less than the stage casing external diameter; The backward step end face of the step end face of inner chamber of cylinder block and piston is formed hydraulic cavities relatively, and this hydraulic cavities is connected with pressure oil-source through pipe joint; Described piston (7) hollow is tubular; Its front end face is relative with tailstock body (2) rear end face of rotation tailstock; Described coupled wheel (8) is fixedly connected with the rotation tailstock spindle; Described moving brake block (14) is installed on the coupled wheel (8), and between described piston nose face and tailstock body rear end face, all gapped between moving brake block (14) and piston (7) front end face, tailstock body (2) rear end face; Described hydraulic jack inner chamber of cylinder block leading portion internal diameter is less than the stage casing internal diameter; The bulge loop of bending in forming is provided with axial hole, putting spring in the axial hole (13) on the bulge loop; The axial hole front end is screwed stop screw, and spring (13) rear end is resisted against the front step end face of described piston (7).
2. rotation tailstock spindle brake gear according to claim 1 is characterized in that: be installed with fixedly brake block (15) on the rear end face of described tailstock body (2).
3. rotation tailstock spindle brake gear according to claim 2 is characterized in that: Front oil seal (3) and Rear oil seal (6) are set between described hydraulic jack cylinder body and the piston (7).
4. rotation tailstock spindle brake gear according to claim 3; It is characterized in that: described cylinder block is made up of front jar sheath (12) and back cylinder sleeve (11) butt joint, and the front end face of back cylinder sleeve (11) is formed hydraulic cavities as the step end face and described piston (7) the backward step end face of described inner chamber of cylinder block.
5. rotation tailstock spindle brake gear according to claim 4 is characterized in that: described back cylinder sleeve (11) rear end face is equipped with cylinder cover (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203866648U CN202224996U (en) | 2011-06-17 | 2011-10-12 | Brake gear for spindle of rotary tailstock |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120206852.8 | 2011-06-17 | ||
| CN201120206852 | 2011-06-17 | ||
| CN2011203866648U CN202224996U (en) | 2011-06-17 | 2011-10-12 | Brake gear for spindle of rotary tailstock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202224996U true CN202224996U (en) | 2012-05-23 |
Family
ID=46075602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203866648U Expired - Fee Related CN202224996U (en) | 2011-06-17 | 2011-10-12 | Brake gear for spindle of rotary tailstock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202224996U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985446A (en) * | 2015-07-07 | 2015-10-21 | 东莞市毅豪精密机械有限公司 | High-precision direct-driven type rotary worktable |
| CN107932156A (en) * | 2017-12-28 | 2018-04-20 | 广州群创数控机床有限公司 | It is a kind of can automatic indexing and clamping work spindle |
| CN108166808A (en) * | 2018-01-23 | 2018-06-15 | 浙江巨人停车设备有限公司 | Domestic appliance formula parking apparatus |
| CN109048446A (en) * | 2018-10-09 | 2018-12-21 | 珠海格力电器股份有限公司 | Main shaft braking system |
-
2011
- 2011-10-12 CN CN2011203866648U patent/CN202224996U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985446A (en) * | 2015-07-07 | 2015-10-21 | 东莞市毅豪精密机械有限公司 | High-precision direct-driven type rotary worktable |
| CN104985446B (en) * | 2015-07-07 | 2018-05-29 | 东莞市毅豪精密机械有限公司 | High-accuracy direct-drive type rotary table |
| CN107932156A (en) * | 2017-12-28 | 2018-04-20 | 广州群创数控机床有限公司 | It is a kind of can automatic indexing and clamping work spindle |
| CN108166808A (en) * | 2018-01-23 | 2018-06-15 | 浙江巨人停车设备有限公司 | Domestic appliance formula parking apparatus |
| CN108166808B (en) * | 2018-01-23 | 2023-11-21 | 浙江巨人停车设备有限公司 | Household mechanical parking equipment |
| CN109048446A (en) * | 2018-10-09 | 2018-12-21 | 珠海格力电器股份有限公司 | Main shaft braking system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG RIFA PRECISION MACHINERY CO., LTD. Free format text: FORMER NAME: ZHEJIANG RIFA DIGITAL PRECISION MACHINERY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 312500 Shaoxing Province, Xinchang province provincial high-tech industrial park, the number of Digital Technology Park Patentee after: Zhejiang Rifa Precision Machinery Co., Ltd. Address before: 312500 Shaoxing Province, Xinchang province provincial high-tech industrial park, the number of Digital Technology Park Patentee before: Zhejiang Rifa Digital Precision Machinery Co., Ltd. |
|
| 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: 20120523 Termination date: 20181012 |