阅读说明：本技术 一种数控设备夹套式中心架夹具 (Numerical control equipment jacket formula centre frame anchor clamps ) 是由 代鹏宇 赵晓红 张颖 肖青坤 闫立楠 杨新运 于 2021-06-28 设计创作，主要内容包括：本发明提出了一种数控设备夹套式中心架夹具,包括夹具基座、端盖、夹套座、夹套、轴承、活塞、油缸体、后盖,所述夹具基座上具有安装基座,所述夹套座、油缸体分别通过轴承安装在安装基座的两端,所述夹套座外侧背向油缸体的一端设有端盖,所述油缸体外侧背向夹套座的一端设有后盖,所述油缸体朝向夹套座的一端具有油腔,所述油缸体上还设有与油腔相连通的进油通道P口、进油通道T口及回油通道,所述活塞设置于油腔内,所述活塞朝向端盖的一端安装有夹套,所述夹套设置于夹套座的内腔中。与现有中心架相比,该夹具在现有数控机床上即可实现安装,通用性强,环抱式夹紧,零件变形极小,提升了加工精度,提升了产品的合格率。(The invention provides a jacket type center frame clamp of numerical control equipment, which comprises a clamp base, an end cover, a jacket base, a jacket, a bearing, a piston, an oil cylinder body and a rear cover, wherein the clamp base is arranged on the clamp base, the jacket base and the oil cylinder body are respectively arranged at two ends of the mounting base through the bearing, the end cover is arranged at one end, back to the oil cylinder body, of the outer side of the jacket base, the rear cover is arranged at one end, back to the jacket base, of the outer side of the oil cylinder body, an oil cavity is formed in one end, facing the jacket base, of the oil cylinder body, an oil inlet channel P port, an oil inlet channel T port and an oil return channel which are communicated with the oil cavity are further arranged on the oil cylinder body, the piston is arranged in the oil cavity, the jacket is arranged at one end, facing the end cover, of the piston, and the jacket is arranged in the inner cavity of the jacket base. Compared with the existing center frame, the clamp can be installed on the existing numerical control machine tool, the universality is strong, the encircling type clamping is realized, the part deformation is extremely small, the processing precision is improved, and the qualification rate of products is improved.)

1. The utility model provides a numerical control equipment double-layered shell type centre frame anchor clamps which characterized in that: the clamp comprises a clamp base (1), an end cover (2), a clamping sleeve seat (3), a clamping sleeve (4), a bearing (5), a piston (6), an oil cylinder body (7) and a rear cover (10), wherein the clamp base (1) is provided with a mounting base (11), the clamping sleeve seat (3) and the oil cylinder body (7) are respectively installed at two ends of the mounting base (11) through the bearing (5), the end cover (2) is arranged at one end of the outer side of the clamping sleeve seat (3) opposite to the oil cylinder body (7), the rear cover (10) is arranged at one end of the outer side of the oil cylinder body (7) opposite to the clamping sleeve seat (3), an oil cavity is formed in one end of the oil cylinder body (7) facing the clamping sleeve seat (3), an oil inlet P, an oil inlet T and an oil return channel communicated with the oil cavity are further formed in the oil cylinder body (7), the piston (6) is arranged in the oil cavity, the clamping sleeve (4) is installed at one end, facing the end of the end cover (2), of the piston (6), the jacket (4) is arranged in the inner cavity of the jacket seat (3).

2. The numerical control equipment jacketed steady rest clamp of claim 1, characterized in that: one end of the inner wall of the jacket seat (3), which is back to the piston (6), is provided with a driving conical surface, and when the jacket (4) moves towards one end, which is back to the jacket seat (3), under the driving of the piston (6), the jacket (4) contracts radially under the action of the driving conical surface.

3. The numerical control equipment jacketed steady rest clamp of claim 1, characterized in that: the piston (6) is of a multi-section structure, the outer diameter of each section of the piston is gradually reduced from one end facing the end cover (2) to one end facing the rear cover (10), and a plurality of first step grooves matched with the piston (6) are formed in the inner wall of an oil cavity of the oil cylinder body (7).

4. A jacket-type steady rest clamp for numerical control equipment according to any one of claims 1 to 3, wherein: the piston (6) is equipped with guide block (8) towards the one end of back lid (10), guide block (8) are connected with piston (6) through a plurality of fastener, the inner wall of guide block (8) has the toper leading-in face that reduces along work piece insertion direction internal diameter gradually.

5. The numerical control equipment jacketed steady rest clamp of claim 1, characterized in that: the piston (6) is internally provided with a central guide cavity, one end of the jacket seat (3) extends to form a guide-in part, the guide-in part extends into the central guide cavity, and the end part of the jacket (4) is connected with the bottom of the central guide cavity through a connecting piece.

6. The numerical control equipment jacketed steady rest clamp of claim 1, characterized in that: install the first sealing washer of a plurality of between the inner wall of hydro-cylinder body (7) and the outer wall of piston (6), install a plurality of second sealing washer between the inner wall of piston (6) and the outer wall of double-layered cover seat (3).

7. The numerical control equipment jacketed steady rest clamp of claim 1, characterized in that: a third sealing ring is arranged between the clamp base (1) and the rear wall of the end cover (2), and a fourth sealing ring is arranged between the clamp base (1) and the front wall of the rear cover (10).

8. The numerical control equipment jacketed steady rest clamp of claim 1, characterized in that: the oil cylinder is characterized in that the end cover (2) and the rear cover (10) are respectively connected with the mounting base (11) through a plurality of fasteners, a dustproof sealing ring (9) is arranged between the end cover (2) and the jacket base (3), and the dustproof sealing ring (9) is arranged between the rear cover (10) and the oil cylinder body (7).

9. The numerical control equipment jacketed steady rest clamp of claim 8, characterized by: the inner ring of the dustproof sealing ring (9) is provided with a sealing skirt edge, and the outer ring of the sealing skirt edge is sleeved with an energy storage spring.

10. The numerical control equipment jacketed steady rest clamp of claim 1, characterized in that: the outer wall of jacket seat (3) is equipped with the first installation ladder groove that is used for installing bearing (5), the outer wall of hydro-cylinder body (7) is equipped with the second installation ladder groove that is used for installing bearing (5).

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of clamps, in particular to a jacket type center frame clamp of numerical control equipment.

[ background of the invention ]

Thin-wall pipe parts generally appear in the fields of military industry and aerospace, and the processing of the thin-wall parts has been a difficult problem all the time, wherein the external circle is the most difficult to turn threads, and the deformation of the parts is easily caused during the processing in a common clamping mode, so that the manufacturing precision of the parts is influenced. With the continuous development of the manufacturing industry in the fields of military industry and aerospace, the requirement on the manufacturing precision of thin-walled tube parts is higher and higher. The current processing mode is that one end is clamped tightly with ordinary chuck, and the other end carries out the centre gripping to the excircle with ordinary centre frame to the processing screw thread, nevertheless because of pressure is too big, can lead to the screw thread deformation after the processing, can't reach the design requirement, cause and scrap. Therefore, a special fixture for the center frame, which can reduce deformation, is needed to clamp the part.

[ summary of the invention ]

The invention aims to solve the problems in the prior art, and provides a jacket type center frame clamp of numerical control equipment, which can clamp parts only by simple operation, process high-precision products and improve the manufacturing level.

In order to achieve the purpose, the invention provides a jacket type center frame clamp for numerical control equipment, which comprises a clamp base, an end cover, a jacket base, a jacket, a bearing, a piston, an oil cylinder body and a rear cover, wherein the clamp base is provided with a mounting base, the jacket base and the oil cylinder body are respectively mounted at two ends of the mounting base through the bearing, the end cover is arranged at one end, back to the oil cylinder body, of the outer side of the jacket base, the rear cover is arranged at one end, back to the jacket base, of the outer side of the oil cylinder body, an oil cavity is formed in one end, facing the jacket base, of the oil cylinder body, an oil inlet P, an oil inlet T and an oil return channel which are communicated with the oil cavity are further arranged on the oil cylinder body, the piston is arranged in the oil cavity, the jacket is mounted at one end, facing the end cover, of the piston, and the jacket is arranged in the inner cavity of the jacket base.

Preferably, one end of the inner wall of the jacket seat, which faces away from the piston, is provided with a driving conical surface, and when the jacket moves towards one end, which faces away from the jacket seat, under the driving of the piston, the jacket contracts radially under the action of the driving conical surface.

Preferably, the piston is of a multi-section structure, the outer diameter of each section of the piston is gradually reduced from one end facing the end cover to one end facing the rear cover, and the inner wall of the oil cavity of the oil cylinder body is provided with a plurality of first stepped grooves matched with the piston.

Preferably, a guide block is arranged at one end of the piston facing the rear cover, the guide block is connected with the piston through a plurality of fasteners, and the inner wall of the guide block is provided with a conical guide-in surface with the inner diameter gradually reduced along the insertion direction of the workpiece.

Preferably, the piston is internally provided with a central guide cavity, one end of the jacket seat extends to form an introduction part, the introduction part extends into the central guide cavity, and the end part of the jacket is connected with the bottom of the central guide cavity through a connecting piece.

Preferably, a plurality of first sealing rings are installed between the inner wall of the oil cylinder body and the outer wall of the piston, and a plurality of second sealing rings are installed between the inner wall of the piston and the outer wall of the jacket seat.

Preferably, a third sealing ring is arranged between the clamp base and the rear wall of the end cover, and a fourth sealing ring is arranged between the clamp base and the front wall of the rear cover.

Preferably, the end cover and the rear cover are respectively connected with the mounting base through a plurality of fasteners, a dustproof sealing ring is arranged between the end cover and the clamping sleeve seat, and a dustproof sealing ring is arranged between the rear cover and the oil cylinder body.

Preferably, the inner ring of the dustproof sealing ring is provided with a sealing skirt, and the outer ring of the sealing skirt is sleeved with an energy storage spring.

Preferably, the outer wall of the jacket seat is provided with a first mounting stepped groove for mounting a bearing, and the outer wall of the oil cylinder body is provided with a second mounting stepped groove for mounting the bearing.

The invention has the beneficial effects that: the main clamping of the clamp is a clamping sleeve, and the surrounding type clamping can effectively control the clamping deformation; the clamping and loosening of the jacket are realized by the built-in piston cylinder, and the rotation function of the common center frame is kept. Compared with the existing center frame, the clamp can be installed on the existing numerical control machine tool, the universality is strong, the encircling type clamping is realized, the part deformation is extremely small, the processing precision is improved, and the qualification rate of products is improved. In addition, in order to reduce the production cost and increase the compatibility of the design clamp, different products can be processed by the same clamp through replacing fewer component parts, the type changing process is simple, and the cost is low. When a customer processes thin-walled pipe parts of various types, the jacket can be replaced to realize the model replacement, and the cost is low.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a schematic structural view of a jacket type center frame clamp of a numerical control apparatus according to the present invention;

FIG. 2 is a schematic view in cross section along AA of FIG. 1;

fig. 3 is a right side view of a jacketed steady rest clamp of a numerical control apparatus of the present invention.

[ detailed description ] embodiments

Referring to fig. 1 to 3, the invention relates to a jacket type center frame clamp for a numerical control device, which comprises a clamp base 1, an end cover 2, a jacket base 3, a jacket 4, a bearing 5, a piston 6, an oil cylinder body 7 and a rear cover 10, wherein the clamp base 1 is provided with a mounting base 11, the jacket base 3 and the oil cylinder body 7 are respectively mounted at two ends of the mounting base 11 through the bearing 5, the jacket base 3 is used for precise positioning during jacket clamping, the end cover 2 is arranged at one end of the outer side of the jacket base 3, which is back to the oil cylinder body 7, the rear cover 10 is arranged at one end of the outer side of the oil cylinder body 7, which is back to the jacket base 3, an oil cavity is arranged at one end of the oil cylinder body 7, which is facing the jacket base 3, an oil inlet P, an oil inlet T and an oil return passage which are communicated with the oil cavity are further arranged on the oil cylinder body 7, the piston 6 is arranged in the oil cavity and is used for providing clamping force for the jacket 4, the jacket 6 is mounted at one end, which is facing the end of the end cover 2, the jacket 4 is arranged in the inner cavity of the jacket seat 3 and used for clamping during clamping.

Further, the end of the inner wall of the jacket seat 3, which faces away from the piston 6, is provided with a driving conical surface, and when the jacket 4 moves towards the end, which faces away from the jacket seat 3, under the driving of the piston 6, the jacket 4 contracts radially under the action of the driving conical surface.

Further, the piston 6 is of a multi-section structure, the outer diameter of each section of the piston gradually decreases from one end facing the end cover 2 to one end facing the rear cover 10, and the inner wall of the oil cavity of the oil cylinder body 7 is provided with a plurality of first stepped grooves matched with the piston 6.

Furthermore, one end of the piston 6 facing the rear cover 10 is provided with a guide block 8 as a guide for loading and unloading parts, the guide block 8 is connected with the piston 6 through a plurality of fasteners, and the inner wall of the guide block 8 is provided with a conical guide-in surface with the inner diameter gradually reduced along the insertion direction of the workpiece.

Furthermore, a central guide cavity is formed inside the piston 6, a guide part extends from one end of the jacket seat 3, the guide part extends into the central guide cavity, and the end part of the jacket 4 is connected with the bottom of the central guide cavity through a connecting piece.

Furthermore, a plurality of first sealing rings are arranged between the inner wall of the oil cylinder body 7 and the outer wall of the piston 6, and a plurality of second sealing rings are arranged between the inner wall of the piston 6 and the outer wall of the jacket seat 3

Further, a third sealing ring is arranged between the clamp base 1 and the rear wall of the end cover 2, and a fourth sealing ring is arranged between the clamp base 1 and the front wall of the rear cover 10.

Furthermore, the end cover 2 and the rear cover 10 are respectively connected with the mounting base 11 through a plurality of fasteners and used for sealing and preventing dust of the clamp, a dust seal ring 9 is arranged between the end cover 2 and the jacket base 3, the dust seal ring 9 is arranged between the rear cover 10 and the oil cylinder body 7, an inner ring of the dust seal ring 9 is provided with a seal skirt edge, an outer ring of the seal skirt edge is sleeved with an energy storage spring, and the sealing reliability is improved.

Further, the outer wall of jacket seat 3 is equipped with the first installation ladder groove that is used for installing bearing 5, the outer wall of oil cylinder body 7 is equipped with the second installation ladder groove that is used for installing bearing 5.

The working process of the invention is as follows:

according to the jacket type center frame clamp of the numerical control equipment, in an initial state of the clamp, the oil cylinder body 7 is positioned at the front end, and the jacket 4 is loosened. When the part is clamped, the part extends into the jacket 4 from the rear part, an oil inlet P of the oil cylinder body 7 is filled with oil, the jacket 4 is tensioned by moving backwards, the part is clamped after the jacket 4 is stressed, and the part is driven by the main shaft clamp to rotate for processing. After the machining is finished, an oil inlet T of the oil cylinder body 7 is filled with oil, the jacket 4 is pushed forwards, the jacket 4 is stressed to loosen parts, and the parts are drawn out from the rear part. When processing the thin-walled tube part of multiple different models, the accessible is changed jacket 4 and is realized the centre gripping of remodeling.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.