CN212398367U

CN212398367U - Gear machining equipment with chip collecting function

Info

Publication number: CN212398367U
Application number: CN202020456098.2U
Authority: CN
Inventors: 陈海华; 胡常华; 郑漫
Original assignee: Dongguan Qiqu Robot Technology Co Ltd
Current assignee: Danjiangkou Xifeng Industry And Trade Co ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2021-01-26
Anticipated expiration: 2030-04-01

Abstract

The invention discloses gear machining equipment with a debris collecting function, which comprises an outer frame, a cooling circulation module, a rotation module and a collection module, wherein a motor fixing plate is arranged above the right side of the outer frame, a gear shaving motor is arranged above the motor fixing plate, the output end of the gear shaving motor is connected with a transmission shaft, a gear shaving cutter is sleeved in the middle of the transmission shaft, the left end of the transmission shaft is connected with a fixed bearing, the left side of the fixed bearing is connected with the outer frame, an inner frame is arranged in the middle of the inner side of the outer frame, a circulation pipe is arranged at the bottom of the cooling circulation module, the cooling circulation module is arranged on two sides of the outer frame, a hollow column is arranged at the bottom of the rotation module, the rotation module is arranged on the left side of the outer frame, the collection module is arranged below the inner frame, the user can collect the sweeps that the processing produced through collection module and carry out preliminary treatment.

Description

Gear machining equipment with chip collecting function

Technical Field

The invention relates to the technical field of gear part machining production, in particular to gear machining equipment with a chip collecting function.

Background

The gear refers to a mechanical element with a gear on a wheel rim which is continuously engaged to transmit motion and power, the application of the gear in transmission has appeared very early, at the end of 19 th century, the principle of generating a gear cutting method and the successive appearance of special machine tools and cutters for cutting the gear by using the principle have gradually increased along with the development of technology, and the production methods of hobbing, gear shaping, gear shaving and the like have appeared, wherein a gear-shaped gear shaving cutter is used as a cutter to finish the tooth surface of the gear which is already processed, the processing method is called as 'gear shaving', a gear shaving machine carries out finish machining on a cylindrical gear by freely rotating a workpiece driven by the cutter according to the principle of spiral gear engagement, thread-shaped shoulders are shaved on the tooth surface to correct the tooth shape and improve the surface smoothness, but fine and strip-shaped chips are generated during the processing because the tooth surface which is already primarily processed is subjected to finish machining, such chips are not easy to handle, and easily fall into machine parts to cause damage to the machine, so that structural improvement of gear machining equipment is required.

Gear machining equipment in the market in use does not have the structure of effectively collecting the processing to the piece that processing produced mostly, and the piece falls into mechanical inside easily, causes the damage of certain degree to machinery, and tiny piece splashes easily, can cause the influence to operating personnel health.

Disclosure of Invention

The invention aims to provide gear machining equipment with a chip collecting function, and aims to solve the problems that most of the gear machining equipment in the market proposed in the background art does not have a structure for effectively collecting and treating chips generated in machining in use, the chips easily fall into the machine to damage the machine to a certain extent, and fine chips are easily splashed and possibly affect the body of an operator.

The invention provides the following technical scheme that the above purpose is not achieved: the utility model provides a gear machining equipment with collect piece function, includes outer frame, cooling circulation module, rotation module and collection module, the motor fixed plate is installed to the outside right side top of outer frame, and the top of motor fixed plate installs the gear shaving motor, the output of gear shaving motor is connected with the transmission shaft, and the middle part cover of transmission shaft has the gear shaving cutter, the left end of transmission shaft is connected with fixing bearing, and fixing bearing's left side links to each other with outer frame, the internal frame is installed to the inboard bottom of outer frame, the bottom of cooling circulation module is provided with the circulating pipe, and the cooling circulation module is located the left side and the upper right side of outer frame respectively, hollow post is installed to the bottom of rotation module, and the rotation module is located the left side of outer frame, the collection module includes vertical hydraulic stem, horizontal hydraulic stem, side hydraulic stem, places board, Fine and close filter screen, transposition piece, compression roof and sealed rubber ring, and the collection module is located the below of internal frame, the compression roof is installed to the top of vertical hydraulic stem, and the left side of vertical hydraulic stem is provided with the side hydraulic stem, the top of side hydraulic stem is provided with places the board, the upper right side of vertical hydraulic stem is provided with the transposition piece, and shifts the right-hand member of piece and be connected with horizontal hydraulic stem, compression roof upper end edge all is provided with sealed rubber ring with the left end edge of transposition piece.

Preferably, the gear shaving motor is connected with the motor fixing plate through a bolt to form a detachable structure, the transmission shaft and the gear shaving cutter are of a welded integrated structure, and the inner frame is connected with the outer frame through welding.

Preferably, the cooling circulation module includes liquid storage pot, cooling booster pump, circulating pipe, holding vessel, circulation booster pump, collecting channel, residue filter layer and drenches the liquid mouth, the left side of cooling booster pump is connected with drenches the liquid mouth, and the right side of cooling booster pump is connected with the liquid storage pot, the upper right side of holding vessel is provided with collecting channel, and collecting channel's top internally mounted has the residue filter layer, the left side of holding vessel is connected with the circulation booster pump, and the left side of circulation booster pump is connected with the right side of cooling booster pump through the circulating pipe.

Preferably, be bolted connection between cooling booster pump, liquid storage pot and the outer frame, constitute detachable construction, the cooling booster pump passes through the hose connection with the liquid storage pot, link to each other through the hose between holding vessel and the circulation booster pump.

Preferably, the rotation module is including rotating motor, fixed block, hollow post, swivel bearing, trade a pole, locking piece telescopic link, lock piece, the rotation motor is installed on the inside top of hollow post, and the top of rotating the motor installs swivel bearing, the output that rotates the motor is connected with the bottom of trading the pole, and the tip top of trading the pole installs the fixed block, trade the tip inboard of a pole and install the locking piece telescopic link, and the top of locking piece telescopic link is connected with the lock piece.

Preferably, the rotating motor is connected with the hollow column through a bolt to form a detachable structure, the piece changing rod and the rotary bearing are welded, and the locking block telescopic rod is connected with the locking block through a bolt.

Preferably, the piece changing rods are provided with 6 pieces, the interval of the installation angle between every two piece changing rods is 60 degrees, and the piece changing rods are of a welding integrated structure.

Preferably, constitute welding integral type structure through welded fastening between vertical hydraulic stem and the compression roof, horizontal hydraulic stem and transposition piece formula structure as an organic whole of welding, fine and close filter screen with place the board and be connected through agreeing with the groove block joint, constitute detachable construction.

Preferably, the transverse hydraulic rod, the longitudinal hydraulic rod, the lateral hydraulic rod and the outer frame are all connected through bolts to form a detachable structure.

Compared with the prior art, the invention has the following beneficial effects:

1. the gear shaving motor and the motor fixing plate are connected through the bolts to form a detachable structure, so that the gear shaving motor is convenient to disassemble, assemble and maintain, the transmission shaft and the gear shaving cutter are of a welded integrated structure, the gear shaving cutter can not deviate in position when rotating at a high speed and applying force to a tool, the inner frame and the outer frame are of a welded integrated structure, and the stability of the overall structure can be guaranteed.

2. The cooling circulation module is connected with the outer frame through bolts, so that the independent components can be conveniently disassembled and assembled, and the cooling booster pump, the liquid storage tank, the collection tank and the circulation booster pump are all connected through hoses, so that the positions of all the components can be conveniently adjusted.

3. The rotary motor mounting carrier adopts the hollow column, and the hollow column is connected with the rotary motor through the bolt, so that the rotary motor can be conveniently dismounted and mounted, the heat dissipation of the rotary motor is facilitated, the workpiece changing rod and the rotary bearing are of a welded integrated structure, the stability of the workpiece changing rod can be ensured, and the horizontal angle is not easy to deviate.

4. The number of the workpiece changing rods is 6, the installation angle interval between every two workpiece changing rods is 60 degrees, the production efficiency can be improved, and the influence of the workpiece changing rods on chip collection is small compared with a disc type clamp.

5. The longitudinal hydraulic rod and the compression top plate, and the transverse hydraulic rod and the displacement block are all in a welding integrated structure, so that the relative stability of each part during compression treatment of chips can be ensured.

Drawings

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

FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is a schematic structural diagram of a rotating module according to the present invention;

FIG. 4 is a schematic perspective view of a rotating module according to the present invention;

fig. 5 is a schematic structural diagram of a collection module according to the present invention.

In the figure: 1. an outer frame; 2. a gear shaving motor; 3. a drive shaft; 4. shaving a gear cutter; 5. fixing the bearing; 6. a motor fixing plate; 7. a cooling circulation module; 8. a liquid storage tank; 9. cooling the booster pump; 10. an inner frame; 11. a circulation pipe; 12. a collection tank; 13. a circulating booster pump; 14. a liquid collection pipe; 15. a residue filter layer; 16. a rotation module; 17. rotating the motor; 18. a fixed block; 19. a hollow column; 20. a rotating bearing; 21. a workpiece changing rod; 22. a locking block telescopic rod; 23. a position locking block; 24. a collection module; 25. a longitudinal hydraulic rod; 26. a transverse hydraulic rod; 27. a side hydraulic lever; 28. placing the plate; 29. compacting a filter screen; 30. a bit-shifting block; 31. compressing the top plate; 32. sealing the rubber ring; 33. a liquid pouring port.

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 embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides the following technical solutions: the utility model provides a gear machining equipment with collect piece function, including outer frame 1, cooling circulation module 7, rotation module 16 and collection module 24, motor fixed plate 6 is installed to the outside right side top of outer frame 1, and shaving motor 2 is installed to the top of motor fixed plate 6, the output of shaving motor 2 is connected with transmission shaft 3, and the middle part cover of transmission shaft 3 has shaving cutter 4, the left end of transmission shaft 3 is connected with fixing bearing 5, and fixing bearing 5's left side links to each other with outer frame 1, the inboard bottom of outer frame 1 is installed inner frame 10, the bottom of cooling circulation module 7 is provided with circulating pipe 11, and cooling circulation module 7 is located the left downside and the upper right side of outer frame 1 respectively, hollow post 19 is installed to the bottom of rotation module 16, and rotation module 16 is located the left side of outer frame 1, collection module 24 includes vertical hydraulic stem 25, horizontal hydraulic stem 26, Side hydraulic stem 27, place board 28, fine and close filter screen 29, the piece 30 that shifts, compression roof 31 and sealed rubber ring 32, and collection module 24 is located the below of internal frame 10, compression roof 31 is installed to the top of vertical hydraulic stem 25, and the left side of vertical hydraulic stem 25 is provided with side hydraulic stem 27, the top of side hydraulic stem 27 is provided with places board 28, the upper right side of vertical hydraulic stem 25 is provided with the piece 30 that shifts, and the right-hand member of the piece 30 that shifts is connected with horizontal hydraulic stem 26, compression roof 31 upper end edge all is provided with sealed rubber ring 32 with the left end edge of the piece 30 that shifts.

The gear shaving motor 2 is connected with the motor fixing plate 6 through bolts to form a detachable structure, the transmission shaft 3 and the gear shaving cutter 4 are of a welded integral structure, and the inner frame 10 is connected with the outer frame 1 through welding;

the gear shaving motor 2 and the motor fixing plate 6 are connected through bolts to form a detachable structure, dismounting and maintenance of the gear shaving motor 2 are facilitated, the transmission shaft 3 and the gear shaving cutter 4 are of a welding integrated structure, the gear shaving cutter 4 can not deviate in position when rotating at a high speed and applying force to a tool, the inner frame 10 and the outer frame 1 are of a welding integrated structure, and stability of the whole structure can be guaranteed.

The cooling circulation module 7 comprises a liquid storage tank 8, a cooling booster pump 9, a circulation pipe 11, a collection tank 12, a circulation booster pump 13, a liquid collection pipeline 14, a residue filter layer 15 and a liquid pouring port 33, the left side of the cooling booster pump 9 is connected with the liquid pouring port 33, the right side of the cooling booster pump 9 is connected with the liquid storage tank 8, the upper right side of the collection tank 12 is provided with the liquid collection pipeline 14, the top end of the liquid collection pipeline 14 is internally provided with the residue filter layer 15, the left side of the collection tank 12 is connected with the circulation booster pump 13, and the left side of the circulation booster pump 13 is connected with the right side of the cooling.

The cooling booster pump 9, the liquid storage tank 8 and the outer frame 1 are all connected through bolts to form a detachable structure, the cooling booster pump 9 is connected with the liquid storage tank 8 through a hose, and the collection tank 12 is connected with the circulating booster pump 13 through a hose.

The cooling circulation module 7 is connected with the outer frame 1 through bolts, so that the independent components can be disassembled and assembled, and the cooling booster pump 9, the liquid storage tank 8, the collection tank 12 and the circulation booster pump 13 are connected through hoses, so that the positions of the components can be adjusted.

The rotating module 16 comprises a rotating motor 17, a fixed block 18, a hollow column 19, a rotary bearing 20, a replacing rod 21, a locking rod telescopic rod 22 and a locking block 23, the rotating motor 17 is installed on the top end of the inside of the hollow column 19, the rotary bearing 20 is installed above the rotating motor 17, the output end of the rotating motor 17 is connected with the bottom of the replacing rod 21, the fixed block 18 is installed above the end of the replacing rod 21, the locking rod telescopic rod 22 is installed on the inner side of the end of the replacing rod 21, and the top of the locking rod telescopic rod 22 is connected with the locking block 23.

The rotating motor 17 is connected with the hollow column 19 through a bolt to form a detachable structure, the piece changing rod 21 is welded with the rotary bearing 20, and the locking block telescopic rod 22 is connected with the locking block 23 through a bolt.

The hollow column 19 is selected for use in the installation carrier of the rotating motor 17, and the hollow column 19 is connected with the rotating motor 17 through a bolt, so that the rotating motor 17 can be conveniently disassembled and assembled, the heat dissipation of the rotating motor 17 is facilitated, the replacement rod 21 and the rotating bearing 20 are in an integrated welding structure, the stability of the replacement rod 21 can be ensured, and the horizontal angle is not easy to deviate.

Change a pole 21 and be provided with 6, and every mounting angle interval of changing between the pole 21 is 60, changes a pole 21 formula structure as an organic whole of welding, can improve production efficiency, and changes a pole 21 and for disc fixture, it is less to the influence that the piece was collected.

Vertical hydraulic stem 25 and compression roof 31 between through welded fastening, constitute welding integral type structure, horizontal hydraulic stem 26 and the piece that shifts are welding integral type structure for 30, and fine and close filter screen 29 is connected through agreeing with the groove block fit with placing board 28, constitutes detachable construction.

The transverse hydraulic rod 26, the longitudinal hydraulic rod 25 and the side hydraulic rod 27 are connected with the outer frame 1 through bolts to form a detachable structure.

The longitudinal hydraulic rod 25 and the compression top plate 31, and the transverse hydraulic rod 26 and the displacement block 30 are all in a welding integrated structure, so that the relative stability of each component in the compression treatment of the chips can be ensured.

The working principle is as follows: when the gear processing equipment with the function of collecting chips is used, firstly, a workpiece to be processed is placed on the leftmost fixing block 18, each two independent locking block telescopic rods 22 are adjusted to contract, the purpose of clamping the workpiece is achieved by driving the locking blocks 23 to move towards the fixing block 18, then, the power supply of the rotating motor 17 is turned on, the rotating motor 17 starts to operate, the workpiece changing rod 21 connected with the output end is driven to gradually rotate, meanwhile, another workpiece to be processed can be placed on the next workpiece changing rod 21, the locking block telescopic rods 22 are adjusted to contract, and the locking blocks 23 are driven to move towards the fixing block 18 to clamp the workpiece.

When a first workpiece rotates to the position below the gear shaving cutter 4, the power supply of the gear shaving motor 2 is turned on, the gear shaving motor 2 starts to operate and drives the gear shaving cutter 4 on the transmission shaft 3 to rotate, gear shaving is started on the workpiece, meanwhile, the cooling booster pump 9 and the circulating booster pump 13 are turned on, the cooling booster pump 9 starts to operate, cooling liquid in the liquid storage tank 8 is sucked and pressurized, and then the cooling liquid is sprayed out through the liquid spraying port 33, so that the contact machining part of the gear shaving cutter 4 and the workpiece is cooled.

Meanwhile, the adjusting side hydraulic rod 27 extends out to push the placing plate 28 to ascend and drive the compact filter screen 29 to ascend to the same horizontal height of the displacement block 30, cooling liquid cools the workpiece and the gear shaving cutter 4, meanwhile, chips generated by machining are washed and taken away, the chips flow along with the cooling liquid, reach the surface of the compression top plate 31 in the inner frame 10 and are filtered by the compact filter screen 29, and the chips are remained on the surface of the compression top plate 31.

Meanwhile, the coolant which has undergone the primary filtration flows to the liquid collecting pipeline 14 through the dense filter screen 29, the coolant is filtered again through the residue filtering layer 15 in the liquid collecting pipeline 14 to filter out the remaining ultrafine debris in the coolant, the remaining coolant flows into the collecting tank 12 through the liquid collecting pipeline 14, at this time, the circulating booster pump 13 sucks and pressurizes the coolant from the collecting tank 12, and the coolant is sent to the liquid storage tank 8 through the circulating pipe 11, so that the recycling of the coolant is completed.

After the gear shaving operation is finished, the power supply of the gear shaving motor 2 is turned off, the gear shaving cutter 4 stops rotating, the power supply of the rotating motor 17 is turned on again to drive the workpiece changing rod 21 to rotate, the next workpiece to be machined is conveyed to the position below the gear shaving cutter 4, and the machined workpiece is rotated away from the machining area.

When the workpiece to be processed is rotated out of the outer frame 1, the telescopic rod 22 of the locking block is adjusted to extend out, the locking block 23 is driven to gradually get away from the fixed block 18, the workpiece is loosened, and an operator can take down the processed workpiece.

After the processing is finished, the adjusting side hydraulic rod 27 contracts to enable the adjusting side hydraulic rod to drive the compact filter screen 29 on the placing plate 28 to descend until the adjusting side hydraulic rod resets, then the adjusting longitudinal hydraulic rod 25 contracts to enable the adjusting side hydraulic rod to drive the compression top plate 31 at the top end to descend, the scraps left on the upper surface of the compression top plate 31 also descend, then the adjusting transverse hydraulic rod 26 extends out and drives the shifting block 30 to horizontally move leftwards until the shifting block 30 seals the upper portion of the compression top plate 31, the adjusting longitudinal hydraulic rod 25 is adjusted again to enable the shifting block to extend out and drive the compression top plate 31 to ascend, and the compressing treatment on the scraps is completed through the relative extrusion of the compression top plate 31 and the shifting block 30 in the inner frame 10.

And then, the longitudinal hydraulic rod 25 is adjusted to contract again, the compression top plate 31 is driven to descend, when the compression top plate 31 descends to the lowest limit, the transverse hydraulic rod 26 is adjusted to contract, the displacement block 30 is driven to horizontally move rightwards until the displacement block resets, then the longitudinal hydraulic rod 25 extends out and drives the compression top plate 31 to ascend until the displacement block resets, the transverse hydraulic rod 26 is adjusted to extend out and drives the displacement block 30 to horizontally move leftwards, compressed chips are withdrawn from the interior of the frame, and an operator can further process the compressed chips.

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.

Claims

1. A gear machining apparatus with a function of collecting chips, comprising an outer frame (1), a cooling circulation module (7), a rotation module (16), and a collection module (24), characterized in that: motor fixed plate (6) are installed to the outside right side top of outer frame (1), and the top of motor fixed plate (6) installs shaving motor (2), the output of shaving motor (2) is connected with transmission shaft (3), and the middle part cover of transmission shaft (3) has shaving cutter (4), the left end of transmission shaft (3) is connected with fixing bearing (5), and the left side of fixing bearing (5) links to each other with outer frame (1), inner frame (10) are installed to the inboard bottom of outer frame (1), the bottom of cooling cycle module (7) is provided with circulating pipe (11), and cooling cycle module (7) are located the left downside and the upper right side of outer frame (1) respectively, hollow post (19) are installed to the bottom of rotation module (16), and rotate the left side that module (16) are located outer frame (1), collection module (24) are including vertical hydraulic stem (25), Horizontal hydraulic stem (26), side hydraulic stem (27), place board (28), fine and close filter screen (29), transposition piece (30), compression roof (31) and sealed rubber ring (32), and collection module (24) are located the below of inner frame (10), compression roof (31) are installed to the top of vertical hydraulic stem (25), and the left side of vertical hydraulic stem (25) is provided with side hydraulic stem (27), the top of side hydraulic stem (27) is provided with places board (28), the upper right side of vertical hydraulic stem (25) is provided with transposition piece (30), and the right-hand member of transposition piece (30) is connected with horizontal hydraulic stem (26), the left end edge of compression roof (31) upper end edge and transposition piece (30) all is provided with sealed rubber ring (32).

2. The gear processing apparatus having a function of collecting chips according to claim 1, wherein: the gear shaving motor (2) is connected with the motor fixing plate (6) through bolts to form a detachable structure, the transmission shaft (3) and the gear shaving cutter (4) are of a welded integral structure, and the inner frame (10) is connected with the outer frame (1) through welding.

3. The gear processing apparatus having a function of collecting chips according to claim 1, wherein: cooling circulation module (7) include liquid storage pot (8), cooling booster pump (9), circulating pipe (11), collection tank (12), circulation booster pump (13), collecting channel (14), residue filter layer (15) and drench liquid mouth (33), the left side of cooling booster pump (9) is connected with drenches liquid mouth (33), and the right side of cooling booster pump (9) is connected with liquid storage pot (8), the upper right side of collection tank (12) is provided with collecting channel (14), and the top internally mounted of collecting channel (14) has residue filter layer (15), the left side of collection tank (12) is connected with circulation booster pump (13), and the left side of circulation booster pump (13) is connected with the right side of cooling booster pump (9) through circulating pipe (11).

4. A gear processing apparatus having a function of collecting chips according to claim 3, characterized in that: be bolted connection between cooling booster pump (9), liquid storage pot (8) and outer frame (1), constitute detachable construction, cooling booster pump (9) pass through the hose connection with liquid storage pot (8), link to each other through the hose between holding vessel (12) and circulation booster pump (13).

5. The gear processing apparatus having a function of collecting chips according to claim 1, wherein: rotate module (16) including rotating motor (17), fixed block (18), hollow post (19), swivel bearing (20), trade a pole (21), locking piece telescopic link (22), lock position piece (23), rotation motor (17) are installed on the inside top of hollow post (19), and rotate the top of motor (17) and install swivel bearing (20), the output that rotates motor (17) is connected with the bottom of trading a pole (21), and installs fixed block (18) above the tip of trading a pole (21), the tip inboard of trading a pole (21) is installed locking piece telescopic link (22), and the top of locking piece telescopic link (22) is connected with lock position piece (23).

6. The gear processing apparatus having a function of collecting chips according to claim 5, wherein: rotate between motor (17) and hollow post (19) through bolted connection, constitute detachable construction, for the welding between trade a pole (21) and swivel bearing (20), locking piece telescopic link (22) and lock piece (23) pass through bolted connection.

7. The gear processing apparatus having a function of collecting chips according to claim 5, wherein: the workpiece changing rods (21) are arranged in 6 numbers, the interval of the installation angle between the workpiece changing rods (21) is 60 degrees, and the workpiece changing rods (21) are of a welding integrated structure.

8. The gear processing apparatus having a function of collecting chips according to claim 1, wherein: vertical hydraulic stem (25) and compression roof (31) between through welded fastening, constitute welding integral type structure, horizontal hydraulic stem (26) and transposition piece (30) formula structure as an organic whole of welding, fine and close filter screen (29) are connected through agreeing with the groove block with placing board (28) and are connected, constitute detachable construction.

9. The gear processing apparatus having a function of collecting chips according to claim 1, wherein: the transverse hydraulic rod (26), the longitudinal hydraulic rod (25), the lateral hydraulic rod (27) and the outer frame (1) are connected through bolts to form a detachable structure.