阅读说明：本技术 一种用于汽车冲压模具加工用定位合销孔配对辅助工具 (Positioning pin hole matching auxiliary tool for machining automobile stamping die ) 是由 不公告发明人 于 2021-08-16 设计创作，主要内容包括：本发明属于汽车模具制造技术领域,且公开了一种用于汽车冲压模具加工用定位合销孔配对辅助工具,包括工件和固定筒,所述固定筒的外表面设置有支撑机构,所述固定筒的顶部活动套接有十字柱,所述十字柱的顶部设置有顶盘,所述十字柱的底部固定安装有带动盘,所述十字柱的外表面活动套接有连接弹簧。本发明通过使得下推动块被带动向上移动,最终实现了上推动块和下推动块的同步相向移动,使得内板被挤压而向外侧推动,进而带动移动柱和贴合板向外侧移动,使得贴合板的外侧面与合销孔的内壁贴合从而以定位打磨机构形成的可变直径的同心圆实现对和合销孔中心的精准定位,进而使得打磨效果更好,打磨位置更加精确。(The invention belongs to the technical field of automobile mould manufacturing, and discloses a positioning pin hole matching auxiliary tool for automobile stamping mould processing, which comprises a workpiece and a fixed cylinder, wherein a supporting mechanism is arranged on the outer surface of the fixed cylinder, a cross column is movably sleeved at the top of the fixed cylinder, a top disc is arranged at the top of the cross column, a driving disc is fixedly installed at the bottom of the cross column, and a connecting spring is movably sleeved at the outer surface of the cross column. According to the invention, the lower pushing block is driven to move upwards, so that synchronous opposite movement of the upper pushing block and the lower pushing block is finally realized, the inner plate is extruded to push outwards, the moving column and the attaching plate are further driven to move outwards, the outer side surface of the attaching plate is attached to the inner wall of the pin combining hole, and therefore, the center of the pin combining hole is accurately positioned by a concentric circle with variable diameter formed by a positioning and polishing machine, the polishing effect is better, and the polishing position is more accurate.)

1. The utility model provides a be used for processing of car stamping die to mate appurtenance with location close pinhole, includes work piece (1) and solid fixed cylinder (2), its characterized in that: the outer surface of the fixed cylinder (2) is provided with a supporting mechanism (3), the top of the fixed cylinder (2) is movably sleeved with a cross column (5), the top of the cross column (5) is provided with a top plate (4), the bottom of the cross column (5) is fixedly provided with a driving plate (7), the outer surface of the cross column (5) is movably sleeved with a connecting spring (16), the bottom of the driving disk (7) is fixedly connected with an upper pushing block (8), a transmission column (9) is fixedly arranged at the bottom of the upper pushing block (8), a bottom block (10) is arranged inside the fixed cylinder (2), the bottom end of the transmission column (9) is hermetically sleeved in the bottom block (10), the top of the bottom block (10) is provided with a transmission guide groove (13), a lower pushing block (15) is arranged inside the transmission guide groove (13), the outer surface of the fixed cylinder (2) is provided with a positioning polishing mechanism (6).

2. The auxiliary tool for matching the positioning pin hole for the automobile stamping die in the claim 1 is characterized in that: the fixed cylinder (2) is positioned in a pin hole at the top of the workpiece (1), the top plate (4) is fixedly installed at the top of the cross column (5), a sleeve ring (21) is movably sleeved at the top of the outer surface of the fixed cylinder (2), four supporting mechanisms (3) are fixedly installed on the outer surface of the sleeve ring (21), a clamping groove (41) is formed in the top of the top plate (4), a connecting spring (16) is positioned in the workpiece (1), two ends of the connecting spring are fixedly connected with the workpiece (1) and the driving plate (7) respectively, the bottom block (10) is fixedly installed at the bottom of an inner cavity of the workpiece (1), a moving hole (11) is formed in the top of the bottom block (10), the bottom end of the bottom block (10) is hermetically sleeved in the moving hole (11), a communicating inner cavity (12) is formed in the bottom of the bottom block (10), and the communicating inner cavity (12) is communicated with the moving hole (11) and the conducting groove (13) respectively, the inside of intercommunication inner chamber (12) is filled with liquid, the inside seal cover of transmission guide slot (13) has connect driving plate (14), driving plate (14)'s top fixed mounting has lower push block (15).

3. The auxiliary tool for matching the positioning pin hole for the automobile stamping die in the claim 1 is characterized in that: supporting mechanism (3) are including spliced pole (31), the other end fixed mounting of spliced pole (31) has magnetite (32), spacing hole (33) have been seted up to the bottom of magnetite (32), the top fixedly connected with supporting spring (34) of spacing hole (33) inner chamber, the other end fixedly connected with support column (35) of supporting spring (34), the bottom and the work piece (1) magnetism of magnetite (32) are inhaled the formula and are connected.

4. The auxiliary tool for matching the positioning pin hole for the automobile stamping die in the claim 1 is characterized in that: location grinding machanism (6) include inner panel (61) and removal post (62), inner panel (61) are arranged in the inner chamber of solid fixed cylinder (2) and closely laminate with the inner wall of solid fixed cylinder (2), remove inboard one end and inner panel (61) fixed connection of post (62), remove outside one end fixedly connected with attaching plate (63) of post (62), the equal fixedly connected with sponge strip (64) in both sides of attaching plate (63), remove the activity of post (62) and cup joint in the inner wall of solid fixed cylinder (2), inner panel (61) are arranged in and promote between piece (8) and lower ejector pad (15).

5. The auxiliary tool for matching the positioning pin hole for the automobile stamping die machining is characterized in that: the upper end and the lower end of the inner plate (61) inner side face are respectively in contact with the lower surface of the upper pushing block (8) and the upper surface of the lower pushing block (15) and are limited, the inner plate (61) outer side face is attached to the inner wall of the fixed cylinder (2), and the inner plate and the fixed cylinder are matched in shape and size.

6. The auxiliary tool for matching the positioning pin hole for the automobile stamping die in the claim 1 is characterized in that: the connecting spring (16) is in any state in a stretched state, the connecting spring (16) being incompressible.

7. The auxiliary tool for matching the positioning pin hole for the automobile stamping die machining is characterized in that: the cross sections of the upper pushing block (8) and the lower pushing block (15) are both conical, and the outer surfaces of the upper pushing block (8) and the lower pushing block (15) are in contact with the inner side surface of the inner plate (61).

8. The auxiliary tool for matching the positioning pin hole for the automobile stamping die machining is characterized in that: the liquid in the communicating inner cavity (12) can be water or other incompressible liquid, and the liquid in the communicating inner cavity (12) overflows the inner parts of the moving hole (11) and the conducting groove (13) and is respectively positioned at the bottom of the driving plate (14) and the moving hole (11).

Technical Field

The invention belongs to the technical field of automobile die manufacturing, and particularly relates to a positioning pin hole matching auxiliary tool for automobile stamping die machining.

Background

The automobile stamping die is used for processing automobile parts and parts, and is used for manufacturing metal parts of an automobile, such as the whole shell of an automobile door and the like.

At present, whether the size of a pin hole meets the standard or not is judged by usually manually pairing the pin hole through the pin, but the machine and parameters can change according to loss, so that the machined pin hole can be sometimes reduced, and the pin can not be matched.

When the size that closes the pinhole is on the small side and not reaching standard, the staff will polish with common abrasive paper, and not only the effect is very little, and the hand can cause the injury in the contact with metal work piece in addition, and especially the staff is when polishing with abrasive paper, can produce wearing and tearing and injury to people's hand when abrasive paper and hand contact, wastes time and energy and still has the potential safety hazard.

In the prior art, the worker generally controls the force poorly when polishing and grinding the pin holes, so that the size of the pin holes is enlarged, workpieces are directly scrapped, and the manual grinding is excessive and cannot guarantee the accuracy of grinding and polishing because the size of some pin holes is only a little smaller during processing.

Disclosure of Invention

The invention aims to provide an auxiliary tool for matching positioning pin holes for machining an automobile stamping die, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides a be used for processing of car stamping die to mate appurtenance with location close pinhole, includes work piece and solid fixed cylinder, the surface of solid fixed cylinder is provided with supporting mechanism, the top activity of solid fixed cylinder has cup jointed cross, the top of cross is provided with the top dish, the bottom fixed mounting of cross has the driving disk, the surface activity of cross has cup jointed connecting spring, the bottom fixedly connected with of driving disk promotes the piece on, the bottom fixed mounting who promotes the piece on has the transmission post, the inside of solid fixed cylinder is provided with the bottom block, the bottom seal of transmission post cup joints the inside at the bottom block, the transmission groove has been seted up at the top of bottom block, the inside of transmission groove is provided with down the pushing block, the surface of solid fixed cylinder is provided with location grinding machanism.

Preferably, the fixed cylinder is positioned in a pin hole at the top of a workpiece, the top plate is fixedly installed at the top of the cross column, a lantern ring is movably sleeved at the top of the outer surface of the fixed cylinder, four supporting mechanisms are fixedly installed on the outer surface of the lantern ring, a clamping groove is formed in the top of the top plate, the connecting spring is positioned in the workpiece, two ends of the connecting spring are respectively and fixedly connected with the workpiece and the driving plate, the bottom block is fixedly installed at the bottom of an inner cavity of the workpiece, a moving hole is formed in the top of the bottom block, the bottom end of the bottom block is hermetically sleeved in the moving hole, a communicating inner cavity is formed in the bottom of the inner part of the bottom block and is respectively communicated with the moving hole and the conducting groove, liquid is filled in the communicating inner cavity, the driving plate is hermetically sleeved in the conducting groove, the lower driving block is fixedly installed at the top of the driving plate, and the number of the positioning polishing mechanisms is three, the three positioning and polishing mechanisms are distributed at equal intervals on the basis of the circle center of the fixed cylinder, can form a concentric circle with a changeable diameter and are used for matching pin holes with different diameters, when the cross column is pressed downwards, the driving disc and the upper pushing block can be driven to move downwards, the lower surface of the upper pushing block can downwards extrude the positioning and polishing mechanisms, meanwhile, the transmission column is driven by the upper pushing block to downwards press and compress liquid in a communicated inner cavity, the bottom block is in sealed sleeve joint, the liquid in the communicated inner cavity can move towards the inside of the transmission guide groove so as to push the driving plate and the lower pushing block to upwards move, the outer surface of the lower pushing block starts to upwards push the positioning and polishing mechanisms, and the synchronous opposite movement of the upper pushing block and the lower pushing block enables the positioning and polishing mechanisms to flexibly change states.

Preferably, the supporting mechanism comprises a connecting column, a magnet is fixedly mounted at the other end of the connecting column, a limiting hole is formed in the bottom of the magnet, a supporting spring is fixedly connected to the top of an inner cavity of the limiting hole, a supporting column is fixedly connected to the other end of the supporting spring, the bottom of the magnet is in magnetic type connection with a workpiece, the supporting mechanism is responsible for supporting the fixed cylinder, when the fixed cylinder drives the positioning polishing mechanism to enter the inner part of the pin hole to be treated, a worker can firstly press the top disc downwards and drive the cross column and the driving disc to move downwards so as to drive the upper pushing block and the transmission column to move downwards, and through the matching of liquid in the communicating inner cavity and the driving plate, the upper pushing block and the lower pushing block can synchronously push the positioning polishing mechanism, so that the positioning polishing mechanism moves outwards and is matched with the inner wall of the pin hole, after the center positioning is completed, can press supporting mechanism downwards for the support column is by the top of work piece spacing then upwards press supporting spring and finally get into the inside in spacing hole, and the bottom of magnetite then can be fixed with the work piece magnetism type of inhaling, and convenient follow-up processing to closing the pinhole.

Preferably, the positioning and polishing mechanism comprises an inner plate and a moving column, the inner plate is positioned in an inner cavity of the fixed cylinder and is tightly attached to the inner wall of the fixed cylinder, one end of the inner side of the moving column is fixedly connected with the inner plate, one end of the outer side of the moving column is fixedly connected with an attaching plate, sponge strips are fixedly connected to two sides of the attaching plate, the moving column is movably sleeved in the inner wall of the fixed cylinder, the inner plate is positioned between the upper pushing block and the lower pushing block, the positioning and polishing mechanism is responsible for positioning and polishing the inner wall of the pin hole, when the upper pushing block is pressed by the cross-shaped column and the driving disc, the upper pushing block and the lower pushing block can move downwards and drive the moving hole to move downwards, through transmission of liquid in the communicating inner cavity, the driving plate and the lower pushing block are also driven to move upwards synchronously, the outer surfaces of the upper pushing block and the lower pushing block move the cylinder downwards and push the upper side and the lower side of the inner side surface of the inner plate, make removal post and attaching plate pushed to close the inner wall of round pin then accomplish the center location, then the electricity changes alignment draw-in groove and joint adaptation, drives whole solid fixed cylinder and location grinding machanism after rotating and rotates, and the lateral surface of attaching plate begins to rub with the inner wall that closes the pinhole this moment to consumption reaches the supplementary purpose of adaptation.

Preferably, the upper and lower both ends of inner panel medial surface respectively with the lower surface that promotes the piece and the upper surface contact of pushing down the piece down and by spacing, inner panel lateral surface and the inner wall laminating of a fixed cylinder and both shape and size looks adaptation, the surface that promotes the piece and push down the piece down is the toper of inclining, can promote the inner panel and remove when reciprocating, and it can extrude and promote the inner panel simultaneously when carrying out synchronous motion in opposite directions to promote the piece and push down the piece, can make the lateral surface of attaching plate and the inner wall laminating that closes the pinhole remove to the outside through promoting the inner panel and then driving the removal post and attaching plate when fixing a position, then can consume the inner wall size that closes the pinhole through the friction when retrying, and then reach the purpose of supplementary adaptation.

Preferably, the connecting spring is in a stretched state in any state, the connecting spring cannot be compressed, the connecting spring is responsible for pulling the driving disc to keep a trend of moving upwards, in operation, the connecting spring pulls the driving disc, the upper pushing block and the transmission column to maintain the original state, the bottom of the transmission column is located at an upper position inside the moving hole at the moment, the driving disc cannot be pushed to move upwards, when positioning and polishing work is needed, the driving disc can be pressed downwards by the downward pressure from the cross column and the top disc and moves downwards, the connecting spring is compressed at the moment, when the upper pushing block and the lower pushing block move simultaneously and press and push the inner plate, the degree of stretching of the connecting spring is increased so as to generate an upward pulling force for the driving disc, the purpose is to avoid that the upper pushing block and the lower pushing block exert unlimited pressure on the inner plate, and the outer surface of the attaching plate is prevented from being too tightly contacted with the inner wall of the pin hole, not only for the rotatory resistance that produces of drive that begins, still can cause consequently to close the size increase of pinhole, directly lead to scrapping of work piece, through connecting spring's restriction, the pressure between rigging board and the inner wall that closes the pinhole can not be too big, but is absorbed in central positioning and reasonable adaptation of polishing.

Preferably, the cross-sectional shape that pushes up the piece and push down the piece is the toper, the surface that pushes up the piece and push down the piece contacts with the medial surface of inner panel on, and it can push simultaneously to the inner panel extrusion and promote the inner panel to push up the piece and push down the piece when synchronous motion to the removal on inclined plane matches with the medial surface of inner panel, and the direction of force directly changes ninety degrees, is favorable to closing the center location in pinhole, and then guarantees subsequent more accurate and high-efficient of polishing.

Preferably, the liquid in the communicating inner cavity can be water and other incompressible liquids, the liquid in the communicating inner cavity overflows the inside of the moving hole and the transmission groove and is respectively positioned at the bottom of the driving plate and the bottom of the moving hole, the transmission column can vertically move downwards in the moving hole when moving downwards, due to the adoption of sealing sleeve joint, the transmission liquid in the communicating inner cavity can move towards the inside of the transmission groove and then upwards push the driving plate, further the lower pushing block is driven to move upwards and realize synchronous opposite movement of the upper pushing block and the lower pushing block, and one-hundred-eighty degree steering of force is realized through the communicating inner cavity and the liquid in the communicating inner cavity.

Preferably, the shape of draw-in groove is the square, corresponding adjustment can be made according to the shape of electric drill bit to the shape of draw-in groove, the power device of whole device come from with the electric drill, the staff through with the electric drill bit aim at the draw-in groove and the joint is gone into then open the electric drill and drive the overhead gage and rotate, and then drive solid fixed cylinder and location grinding machanism and rotate, the shape of draw-in groove is variable, mainly depends on the shape of electric drill bit.

Preferably, its bottom salient in the inside in spacing hole when the support column is under the unoperated state, the top edge of support column is circular arc transition design, when closing the location in pinhole, the bottom of magnetite is not with the top contact of work piece, need constantly adjust the gesture of fixed section of thick bamboo before accomplishing central positioning, can press down supporting mechanism after only laminating the lateral surface of laminating board completely with the inner wall that closes the pinhole for the support column gets into the inside in spacing hole completely, accomplishes fixedly.

The invention has the following beneficial effects:

1. the invention realizes the center positioning function before the pin hole is matched and polished by arranging the supporting mechanism, the top disc, the cross column, the positioning and polishing mechanism, the driving disc, the upper pushing block, the bottom block, the moving hole, the transmission groove, the driving plate, the lower pushing block and the like, the driving disc drives the cross column to press downwards to ensure that the driving disc and the upper pushing block move downwards along with the driving disc, then the transmission column is driven to move downwards, so that the transmission liquid in the communicated inner cavity is compressed and then enters the upper part of the transmission groove to push the driving plate, the lower pushing block is driven to move upwards, finally the synchronous opposite movement of the upper pushing block and the lower pushing block is realized, the inner plate is extruded and pushed outwards, further the moving column and the attaching plate are driven to move outwards, the outer side surface of the attaching plate is attached to the inner wall of the pin hole, thereby realizing the accurate positioning of the center of the pin hole and the pin hole by the concentric circle with the variable diameter formed by the positioning and polishing mechanism, and then make the effect of polishing better, the position of polishing is more accurate.

2. According to the invention, the supporting mechanism, the top disc, the cross column, the positioning and polishing mechanism, the driving disc, the upper pushing block, the bottom block, the moving hole, the transmission groove, the driving plate and the lower pushing block have safety functions, the magnet is arranged for magnetic connection with a workpiece, the head of the electric drill is aligned, clamped and paired through the clamping groove, the fixed cylinder obtains power, the fixed cylinder and the positioning and polishing mechanism are driven to perform high-speed rotary friction in the pin hole to replace the traditional manual abrasive paper and file for polishing, the polishing effect is better, the phenomenon that a manual hand is easily scratched and scratched by metal during polishing is avoided, and the safety is high.

3. The invention has the functions of accurate and controllable polishing size by arranging a supporting mechanism, a top plate, a cross column, a positioning polishing mechanism, a driving plate, an upper pushing block, a bottom block, a moving hole, a transmission guide groove, a driving plate, a lower pushing block, a connecting spring and the like, the driving disc is pulled by the stretched connecting spring through the connecting spring, so that the phenomenon that the driven moving column and the attaching plate are too tightly contacted with the inner wall of the pin combining hole due to the fact that the lower pushing block is driven to apply pressure to the inner plate without limit under the action of the cross column and the top disc is avoided, through the effect of connecting spring to the tensile force, go up and promote the piece and obtain the restriction with lower ejector pad to the effort of inner panel, directly avoided because of excessively polishing and cause the problem that closes the pinhole size bigger than normal, the laminating board is no longer inseparable with the contact that closes between the inner wall in pinhole, and elasticity and softly to make the pinhole size of closing after polishing become accurate controllable.

Drawings

FIG. 1 is a schematic exterior view of the structure of the present invention;

FIG. 2 is a front cut-away schematic view of the structure of the present invention;

FIG. 3 is a schematic front view of a stationary barrel according to the present invention;

FIG. 4 is a schematic diagram of the support mechanism of the present invention in isolation;

FIG. 5 is a schematic diagram of the positioning and grinding mechanism of the present invention in isolation;

FIG. 6 is a schematic view of the separation of the internal structure of the fixed cylinder according to the present invention;

FIG. 7 is a schematic top view of a stationary barrel of the present invention;

FIG. 8 is a schematic sectional elevational view of the stationary barrel of the present invention;

FIG. 9 is an enlarged schematic view of the structure at A in FIG. 2 according to the present invention;

fig. 10 is an enlarged view of the structure at B in fig. 8 according to the present invention.

In the figure: 1. a workpiece; 2. a fixed cylinder; 21. a collar; 3. a support mechanism; 31. connecting columns; 32. a magnet; 33. a limiting hole; 34. a support spring; 35. a support pillar; 4. a top tray; 41. a card slot; 5. a cross-shaped column; 6. positioning a polishing mechanism; 61. an inner plate; 62. moving the column; 63. attaching a plate; 64. a sponge strip; 7. driving the disc; 8. an upper pushing block; 9. a drive post; 10. a bottom block; 11. moving the hole; 12. the inner cavity is communicated; 13. a transmission groove; 14. driving the plate; 15. a lower push block; 16. a spring is connected.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 10, in an embodiment of the present invention, an auxiliary positioning and pin hole matching tool for processing an automobile stamping die includes a workpiece 1 and a fixed cylinder 2, a support mechanism 3 is disposed on an outer surface of the fixed cylinder 2, a cross column 5 is movably sleeved on a top of the fixed cylinder 2, a top plate 4 is disposed on a top of the cross column 5, a driving plate 7 is fixedly mounted at a bottom of the cross column 5, a connecting spring 16 is movably sleeved on an outer surface of the cross column 5, an upper pushing block 8 is fixedly connected to a bottom of the driving plate 7, a transmission column 9 is fixedly mounted at a bottom of the upper pushing block 8, a bottom block 10 is disposed inside the fixed cylinder 2, a bottom end of the transmission column 9 is hermetically sealed inside the bottom block 10, a transmission groove 13 is disposed at a top of the bottom block 10, a lower pushing block 15 is disposed inside the transmission groove 13, and a positioning and polishing mechanism 6 is disposed on an outer surface of the fixed cylinder 2.

Wherein, the fixed cylinder 2 is positioned in a pin hole at the top of the workpiece 1, the top plate 4 is fixedly arranged at the top of the cross column 5, the top of the outer surface of the fixed cylinder 2 is movably sleeved with a lantern ring 21, the outer surface of the lantern ring 21 is fixedly provided with four supporting mechanisms 3, the top of the top plate 4 is provided with a clamping groove 41, a connecting spring 16 is positioned in the workpiece 1, two ends of the connecting spring are respectively and fixedly connected with the workpiece 1 and the driving plate 7, the bottom block 10 is fixedly arranged at the bottom of the inner cavity of the workpiece 1, the top of the bottom block 10 is provided with a moving hole 11, the bottom end of the bottom block 10 is hermetically sleeved in the moving hole 11, the bottom of the bottom block 10 is provided with a communicating inner cavity 12, the communicating inner cavity 12 is respectively communicated with the moving hole 11 and a conducting groove 13, the inside of the communicating inner cavity 12 is filled with liquid, the driving plate 14 is hermetically sleeved in the inside of the conducting groove 13, the top of the driving plate 14 is fixedly provided with a lower driving block 15, the three positioning and polishing mechanisms 6, the three positioning grinding mechanisms 6 are distributed in a circle with equal intervals by taking the circle center of the fixed cylinder 2 as a reference, the three positioning grinding mechanisms 6 can form a concentric circle with a changeable diameter, the pin hole is used for matching pin holes with different diameters, when the cross column 5 is pressed downwards, the driving disc 7 and the upper pushing block 8 are driven to move downwards, the lower surface of the upper pushing block 8 extrudes the positioning and polishing mechanism 6 downwards, meanwhile, the transmission column 9 is driven by the upper pushing block 8 to press downwards and compress the liquid in the communicating inner cavity 12, because the bottom block 10 is in sealed sleeve joint, the liquid in the communicating inner cavity 12 can move towards the inside of the conducting groove 13 so as to push the driving plate 14 and the lower pushing block 15 to move upwards, the outer surface of the lower pushing block 15 starts to push the positioning polishing mechanism 6 upwards, and the synchronous opposite movement of the upper pushing block 8 and the lower pushing block 15 enables the positioning polishing mechanism 6 to flexibly change states.

Wherein, the supporting mechanism 3 comprises a connecting column 31, a magnet 32 is fixedly installed at the other end of the connecting column 31, a limiting hole 33 is formed at the bottom of the magnet 32, a supporting spring 34 is fixedly connected at the top of the inner cavity of the limiting hole 33, a supporting column 35 is fixedly connected at the other end of the supporting spring 34, the bottom of the magnet 32 is in magnetic type connection with the workpiece 1, the supporting mechanism 3 is responsible for supporting the fixed cylinder 2, when the fixed cylinder 2 drives the positioning polishing mechanism 6 to enter the inner part of a pin hole to be processed, a worker can firstly press the top disc 4 downwards and drive the cross column 5 and the driving disc 7 to move downwards so as to drive the upper pushing block 8 and the transmission column 9 to move downwards, and through the matching of liquid in the communicating inner cavity 12 and the driving plate 14, the upper pushing block 8 and the lower pushing block 15 can synchronously push the positioning polishing mechanism 6, so that the positioning polishing mechanism 6 moves outwards and fits the inner wall of the pin hole, after accomplishing central positioning, can press down supporting mechanism 3 for support column 35 is by the top of work piece 1 spacing then upwards press supporting spring 34 and finally get into the inside of spacing hole 33, and the bottom of magnetite 32 then can be fixed with work piece 1 magnetism type of inhaling, and convenient follow-up processing to closing the pinhole.

Wherein, the positioning and polishing mechanism 6 comprises an inner plate 61 and a moving column 62, the inner plate 61 is positioned in the inner cavity of the fixed cylinder 2 and is tightly attached to the inner wall of the fixed cylinder 2, one end of the inner side of the moving column 62 is fixedly connected with the inner plate 61, one end of the outer side of the moving column 62 is fixedly connected with an attaching plate 63, both sides of the attaching plate 63 are fixedly connected with sponge strips 64, the moving column 62 is movably sleeved in the inner wall of the fixed cylinder 2, the inner plate 61 is positioned between the upper pushing block 8 and the lower pushing block 15, the positioning and polishing mechanism 6 is responsible for positioning and polishing the inner wall of the pin hole, when the upper pushing block 8 is pressed by the cross-shaped column 5 and the driving disk 7, the inner plate can move downwards and drive the moving hole 11 to move downwards, the driving plate 14 and the lower pushing block 15 are also driven to move upwards synchronously through the transmission of liquid in the communicating inner cavity 12, the outer surfaces of the upper pushing block 8 and the lower pushing block 15 move the cylinder downwards and push the upper and lower sides of the inner side surface of the inner side of the inner plate 61, make and remove post 62 and attaching plate 63 and be pushed to the inner wall that closes the round pin and then accomplish central location, then the electricity commentaries on classics aims at draw-in groove 41 and joint adaptation, drives whole fixed cylinder 2 and location grinding machanism 6 after rotating and rotates, and the lateral surface of attaching plate 63 begins to rub with the inner wall that closes the pinhole this moment to consume and reach the supplementary purpose of adaptation.

Wherein, the upper and lower both ends of inner panel 61 medial surface respectively with last lower surface that promotes piece 8 and the upper surface contact of lower ejector pad 15 and by spacing, inner panel 61 lateral surface and the inner wall laminating of solid fixed cylinder 2 and both shape and size looks adaptation, the surface that promotes piece 8 and lower ejector pad 15 on is the toper of inclining, can promote inner panel 61 and remove when reciprocating, and it can extrude and promote inner panel 61 simultaneously to promote piece 8 and lower ejector pad 15 when carrying out synchronous motion in opposite directions, can drive when the location and remove post 62 and laminating board 63 and remove to the outside and make the lateral surface of laminating board 63 and the inner wall laminating that closes the pinhole through promoting inner panel 61, then can consume the inner wall size that closes the pinhole through the friction when retrying, and then reach the purpose of supplementary adaptation.

Wherein, the connecting spring 16 is in a stretched state under any state, the connecting spring 16 can not be compressed, the connecting spring 16 is responsible for pulling the driving disk 7 to keep a trend of moving upwards, in operation, the connecting spring 16 pulls the driving disk 7, the upper pushing block 8 and the transmission post 9 to maintain the original state, the bottom of the transmission post 9 is located at an upper position inside the moving hole 11, the driving plate 14 can not be pushed to move upwards, when positioning and polishing work is needed, the driving disk 7 is pressed downwards by the cross column 5 and the top plate 4, the connecting spring 16 is compressed, when the upper pushing block 8 and the lower pushing block 15 move simultaneously and press the inner plate 61, the degree of stretching of the connecting spring 16 is increased to generate an upward pulling force to the driving disk 7, the purpose is to avoid the unlimited pressure applied to the inner plate 61 by the upper pushing block 8 and the lower pushing block 15, avoid the surface of attaching plate 63 and close the inner wall contact in pinhole too closely, not only give the rotatory resistance that produces of drive that begins, still can consequently make the size increase that closes the pinhole, directly lead to scrapping of work piece 1, through connecting spring 16's restriction, the pressure between attaching plate 63 and the inner wall that closes the pinhole can not be too big, but is absorbed in central positioning and reasonable adaptation of polishing.

Wherein, the cross-sectional shape that pushes up piece 8 and push down piece 15 is the toper, the surface that pushes up piece 8 and push down piece 15 on contacts with the medial surface of inner panel 61, it can extrude and promote inner panel 61 to inner panel 61 simultaneously to push up piece 8 and push down piece 15 when synchronous motion to the removal on inclined plane matches with the medial surface of inner panel 61, with the direct ninety degrees that changes of the direction of force, be favorable to closing the center location in pinhole, and then guarantee that subsequent polishing is more accurate and high-efficient.

The liquid in the communicating inner cavity 12 can be water or other incompressible liquid, the liquid in the communicating inner cavity 12 overflows the inside of the moving hole 11 and the conducting groove 13 and is respectively positioned at the bottom of the driving plate 14 and the bottom of the moving hole 11, the driving column 9 can vertically move downwards in the moving hole 11 when moving downwards, due to the adoption of sealed sleeve joint, the driving liquid in the communicating inner cavity 12 can move towards the inside of the conducting groove 13 and then upwards push the driving plate 14, further the lower pushing block 15 is driven to move upwards and realize synchronous opposite movement of the upper pushing block 8 and the lower pushing block 15, and one-hundred-eighty degree steering of force is realized through the liquid in the communicating inner cavity 12 and the communicating inner cavity 12.

Wherein, the shape of draw-in groove 41 is the square, and corresponding adjustment can be made according to the shape of electric drill bit to the shape of draw-in groove 41, and the power device of whole device comes from with the electric drill, and the staff drives the overhead dish 4 rotation through aligning the electric drill bit draw-in groove 41 and joint entering then opening the electric drill, and then drives solid fixed cylinder 2 and location grinding machanism 6 and rotate, and the shape of draw-in groove 41 is variable, mainly depends on the shape of electric drill bit.

Wherein, its bottom salient in the inside of spacing hole 33 when support column 35 is under inoperative condition, the top edge of support column 35 is circular arc transition design, when closing the location of pinhole, the bottom of magnetite 32 is not with the top contact of work piece 1, need constantly adjust the gesture of fixed section of thick bamboo 2 before accomplishing central positioning, only can press down supporting mechanism 3 after the lateral surface of rigging board 63 is laminated completely with the inner wall that closes the pinhole for support column 35 gets into the inside of spacing hole 33 completely, accomplish fixedly.

The working principle and the using process are as follows:

firstly, the fixed cylinder 2 and the positioning grinding mechanism 6 are placed in the pin hole of the workpiece 1, the bottom of the supporting column 35 is firstly contacted with the top of the workpiece 1 at this time, so that the bottom of the magnet 32 is not completely contacted with the workpiece 1, then the top disc 4 is pressed downwards and drives the cross column 5 to move downwards, so that the driving disc 7 and the upper pushing block 8 are driven to move downwards, the connecting spring 16 is compressed, the transmission column 9 is driven to move downwards and further move in the moving hole 11, then the transmission liquid in the communicating inner cavity 12 is compressed and pushed to the inside of the transmission groove 13, the bottom of the driving plate 14 is driven to move upwards by the transmission liquid, then the lower pushing block 15 is driven to move upwards, at this time, the upper pushing block 8 and the lower pushing block 15 synchronously move towards each other, the upper side and the lower side of the inner plate 61 are simultaneously pushed and move towards the inner wall of the workpiece 1, so as to drive the moving column 62 to move outwards, the attaching plate 63 is driven to move outwards, when the outer side face of the attaching plate 63 contacts with the inner wall of the pin combining hole, the center positioning of the pin combining hole is completed, and then the magnet 32 is pressed downwards to enable the bottom of the magnet 32 to be in complete magnetic attraction connection with the workpiece 1;

then, aim at draw-in groove 41 and block into with the drill bit of electric drill, start the electric drill and drive a set 4 and rotate, and then drive solid fixed cylinder 2 and rotate at the inside high speed of lantern ring 21, drive location grinding machanism 6 and rotate for the lateral surface of attaching plate 63 utilizes the friction to polish to the inner wall to closing the pinhole in high-speed rotation converges, thereby sponge strip 64 suffers the extrusion and can ooze the inner wall that moisture closed the pinhole, reduces frictional force, improves the precision of polishing.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.