CN110948256A - Drilling and tapping clamp - Google Patents
Drilling and tapping clamp Download PDFInfo
- Publication number
- CN110948256A CN110948256A CN201911190800.3A CN201911190800A CN110948256A CN 110948256 A CN110948256 A CN 110948256A CN 201911190800 A CN201911190800 A CN 201911190800A CN 110948256 A CN110948256 A CN 110948256A
- Authority
- CN
- China
- Prior art keywords
- arc
- shaped
- clamping
- annular
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
- B23Q3/065—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding workpieces being specially deformable, e.g. made from thin-walled or elastic material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention belongs to the technical field of tool fixtures, and particularly relates to a drilling and tapping fixture; comprises a positioning table; an annular chute cavity is formed in the positioning table; the U-shaped sliding block is slidably arranged on the annular wall of the annular sliding groove cavity, and a locking groove is formed in the bottom end face of the U-shaped sliding block; the guide post is arranged on the side wall of the fixed plate, and a clamping cylinder is fixed in the guide post; the other side wall of the fixed plate is provided with a positioning guide plate; the telescopic end of the clamping cylinder is positioned in the sliding groove, and the telescopic end of the clamping cylinder is provided with a guide block through a rotating column; clamping rods are symmetrically arranged on the positioning guide plate through rotating columns, and the clamping rods are rotatably connected with the guide blocks through swinging rods; the end part of the clamping rod is provided with a swinging strip, and an arc-shaped inner supporting plate is rotatably arranged on the swinging strip through a limiting rotating rod; the arc inner support plate can support the inner wall of the arc workpiece, and effectively prevents the arc workpiece from being broken or deformed due to overlarge clamping force when the arc workpiece is clamped and punched.
Description
Technical Field
The invention belongs to the technical field of tool fixtures, and particularly relates to a drilling and tapping fixture.
Background
Drilling refers to the operation of processing a hole in a solid material by using a drill bit, and tapping refers to screwing a screw tap into a bottom hole to be drilled by using a certain torque to process an internal thread; at present, when a user carries out tapping operation, the user needs to firstly drill holes on materials and then can carry out tapping operation.
In the field of machining, workpieces needing drilling or tapping after drilling are frequently encountered in machining, the workpieces are clamped on a bench clamp to be clamped in the traditional method at present, but the workpieces are difficult to fasten by a clamp on a traditional drilling machine due to the special structure of the workpieces machined by the clamp.
For example, in the conventional drilling and tapping operation for an arc-shaped metal sheet workpiece, because the plate wall of the arc-shaped metal sheet workpiece is thin, when the arc-shaped workpiece is clamped by the conventional bench clamp, the inner wall and the outer wall of the arc-shaped workpiece are difficult to synchronously support and clamp, and meanwhile, the inner wall of the arc-shaped workpiece is difficult to locally support and abut tightly, so that the workpiece is shaken or deformed during drilling and tapping.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a drilling and tapping clamp which is mainly used for solving the problems that the conventional drilling and tapping operation is performed on an arc-shaped metal sheet workpiece, because the plate wall of the arc-shaped metal sheet workpiece is thin, when the conventional bench clamp clamps the arc-shaped workpiece, the inner wall and the outer wall of the arc-shaped workpiece are difficult to synchronously support and clamp, and meanwhile, the inner wall of the arc-shaped workpiece is difficult to locally support and abut, so that the workpiece is difficult to shake or deform during drilling and tapping.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a drilling and tapping clamp which comprises a positioning table; the bottom end of the positioning table is provided with an electromagnetic chuck, and an annular chute cavity is formed in the positioning table; at least one sliding limiting device is arranged on the annular sliding groove cavity, and a workpiece clamping device is arranged on each sliding limiting device;
the sliding limiting device comprises a U-shaped sliding block, a locking bolt and a fixing plate; the U-shaped sliding block is slidably arranged on the annular wall of the annular sliding groove cavity, and a locking groove is formed in the bottom end face of the U-shaped sliding block; a locking block is arranged in the groove; the bottom end of the locking bolt is rotatably connected with the locking block, and the locking bolt is rotatably connected with the U-shaped sliding block through threads; a fixing plate is fixed on the side wall of the U-shaped sliding block;
the workpiece clamping device comprises a guide column, a clamping cylinder, a positioning guide plate, a guide block, a clamping rod, a swinging strip, an arc-shaped inner support plate and a limiting rotating rod; the guide posts are arranged on the side wall of the fixed plate, and clamping cylinders are fixed in the guide posts; the other side wall of the fixed plate is provided with a positioning guide plate, the positioning guide plate is provided with a sliding groove, and the end part of the positioning guide plate is provided with an arc-shaped positioning groove; the telescopic end of the clamping cylinder is positioned in the sliding groove, and the telescopic end of the clamping cylinder is provided with a guide block through a rotating column; clamping rods are symmetrically arranged on the positioning guide plate through rotating columns, and the clamping rods are rotatably connected with the guide blocks through swinging rods; the end part of the clamping rod is provided with a swinging strip, and an arc-shaped inner supporting plate is rotatably arranged on the swinging strip through a limiting rotating rod;
when the device works, when the metal sheet with the arc-shaped structure needs to be punched and tapped, an operator firstly adsorbs a positioning table on a drilling and tapping machine tool through an electromagnetic chuck, loosens a locking bolt, stirs a U-shaped sliding block to drive a workpiece clamping device to move on the positioning table, and if the arc length of the arc-shaped metal sheet is too long, the distance between a plurality of U-shaped sliding blocks is adjusted, so that the U-shaped sliding blocks can form a three-point supporting effect on the positioning table; after the U-shaped sliding block is locked and fixed through the locking block, the control unit controls the plurality of clamping cylinders to extend out, telescopic rods of the clamping cylinders can drive the guide block to slide in the sliding groove, the clamping rods can be opened through the swinging rod, meanwhile, an operator rotates the arc inner supporting plate to enable arc bulges of the arc inner supporting plate to rotate to the outer portion of the clamping rods, then arc metal workpieces to be processed are placed into the symmetrically arranged clamping rods, the arc positioning grooves can position the arc metal workpieces, the control unit controls the plurality of clamping cylinders to contract, the plurality of clamping cylinders can synchronously drive the clamping rods to clamp oppositely, when inner walls of the clamping rods are in contact with outer walls of the arc workpieces, the operator rotates the arc inner supporting plate to enable the arc bulges of the arc inner supporting plate to be located inside the arc workpieces, the control unit controls the clamping cylinders to continue clamping operation, and the opposite clamping of the clamping rods can enable the bottom end portions of the arc inner supporting plates to abut against each other, along with the continuous increase of the clamping force, the upper end surface of the inner supporting plate can be tightly propped against the inner wall of the arc-shaped workpiece, so that the arc-shaped metal sheet workpiece is clamped and positioned; through the matching of the plurality of groups of sliding limiting devices and the workpiece clamping devices, the sliding limiting devices can perform three-point positioning clamping work on arc-shaped metal thin-wall workpieces with different lengths, the clamping rods are matched with the arc-shaped inner supporting plates, the opposite clamping rods can clamp and fix the outer wall of the arc-shaped workpiece, the arc-shaped inner supporting plates can support the inner wall of the arc-shaped workpiece, and the phenomenon that the arc-shaped thin-wall workpiece is broken or clamped and deformed due to overlarge clamping force when being clamped and punched is effectively prevented; if the punching force of punching a hole is too big, then can adjust the distance between two adjacent slip stop devices, the extension board can play the effect of supporting force to the inner wall of arc work piece in the arc, and then can reduce because of the punching force is too big, and the phenomenon that the position of punching a hole that leads to the work piece takes place local deformation.
Preferably, an annular supporting disk is slidably mounted in the annular chute cavity through a supporting cylinder, and an annular rubber supporting strip is arranged on the upper end face of the annular supporting disk; the annular rubber supporting bar is positioned right below the clamping rod; an annular concave groove is formed in the annular supporting disk; when the clamping rod is used for clamping an arc-shaped workpiece, the annular rubber supporting strip arranged on the annular supporting disk can support the bottom end of the clamping rod, and therefore when a machine tool drills the arc-shaped workpiece, the phenomenon that the clamping rod is sunken due to overlarge punching pressure during drilling is avoided, and the stable clamping operation of the clamping rod on the arc-shaped workpiece is influenced.
Preferably, an elastic bending piece is arranged between the arc-shaped inner support plate and the swing strip, and the cross section of the elastic bending piece is of a Z-shaped structure; the top end of the elastic bending piece is rotatably connected with the limiting rotating rod; when the arc inner support plate rotates through the limiting rotating rod, the elastic bending piece arranged between the arc inner support plate and the swinging strip can perform elastic tensioning operation on the arc inner support plate, so that the phenomenon that the arc inner support plate is subjected to rotating abrasion or extrusion abrasion due to overlarge hardness between the arc inner support plate and the swinging strip when the arc inner support plate rotates is prevented; when the inner arc-shaped supporting plate supports the inner wall of the arc-shaped workpiece, the elastic bending piece can play a role in elastic limiting, and the phenomenon that when the symmetrical inner arc-shaped supporting plates are mutually extruded under the action of clamping force, the inner arc-shaped supporting plate degree swinging strip plays a role in extrusion impact is prevented, so that stable and safe support of the inner arc-shaped supporting plate is influenced.
Preferably, an extrusion cavity is formed in the elastic bending piece; an expansion cavity is formed in the arc-shaped inner support plate and is communicated with the extrusion cavity through an air guide groove; the limiting rotating rod is of a cavity structure; the clamping rod is provided with an extrusion bag, and the extrusion bag is connected with a limiting rotating rod of the cavity structure through an air duct; the limiting rotating rod is communicated with the extrusion cavity through an air guide groove; when the extrusion device works, when the arc-shaped inner supporting plates are mutually abutted under the opposite clamping force of the clamping rods, the control unit controls the gas in the extrusion bag to enter the extrusion cavity through the limiting rotating rod of the cavity structure so as to expand the elastic bending piece, and the expansion of the elastic bending piece can improve the elastic supporting and limiting effects of the arc-shaped inner supporting plates; meanwhile, the arc inner supporting plate can expand along with the continuous gas entering the expansion cavity through the gas guide groove, and the expanded inner supporting plate can increase the supporting and tightening acting force on the inner wall of the arc workpiece; simultaneously, when the gaseous shrink in the extrusion bag, the interior extension board of arc softened and the softening of elasticity bending piece can increase the rotation deformation effect of extension board in the arc, prevent because the hardness of extension board is too big in the arc, and lead to the phenomenon that turned angle takes place to misplace or incline, and then the inner support board of arc of being convenient for carries out local supporting role to the inner wall of arc work piece.
Preferably, the extrusion bag is arranged on the inner wall of the clamping rod, and one side of the extrusion bag is provided with a corrugated rubber layer; a limiting spring is vertically arranged in a wave trough of the corrugated rubber layer; the during operation sets up the extrusion bag on the inner wall of pressing from both sides tight pole, and when gaseous emission in the extrusion bag, spacing spring's shrink can make the extrusion bag shrink and warp, and then the ripple rubber layer that sets up can increase the tight frictional force of clamp bar to the tight deformability of the elasticity clamp of arc work piece outer wall, increases the tight deformability of clamp bar to the arc work piece outer wall simultaneously, prevents because the hardness of pressing from both sides tight pole is too big, and leads to the work piece to take place to press from both sides the phenomenon of tight deformation.
Preferably, the arc inner wall of the arc inner support plate is provided with a hard rubber layer, and the arc outer wall of the arc inner support plate is provided with an elastic frosting layer; the end part of the arc-shaped inner supporting plate is provided with a hard elastic layer; when the device works, when the gas in the arc inner supporting plate is continuously increased, the elastic frosting layer arranged on the outer wall of the arc inner supporting plate expands, the expansion of the outer wall of the arc inner supporting plate can increase the supporting action area of the arc inner supporting plate on the inner wall of an arc workpiece, and further increase the arc supporting force of the arc inner supporting plate; meanwhile, as the gas continuously enters the arc-shaped inner supporting plate, the end part of the arc-shaped inner supporting plate can stretch out, so that the abutting force of the arc-shaped inner supporting plates which abut against each other can act on the upper inner wall and the lower inner wall of the arc-shaped workpiece, and the supporting and abutting effect of the arc-shaped inner supporting plate on the local drilling position of the arc-shaped workpiece is further increased.
The invention has the following beneficial effects:
1. according to the invention, through the matching of the plurality of groups of sliding limiting devices and the workpiece clamping devices, the sliding limiting devices can perform three-point positioning clamping work on arc-shaped metal thin-wall workpieces with different lengths, the clamping rods are matched with the arc-shaped inner supporting plate, the opposite clamping rods can clamp and fix the outer wall of the arc-shaped workpiece, the arc-shaped inner supporting plate can support the inner wall of the arc-shaped workpiece, and the phenomenon that the arc-shaped thin-wall workpiece is broken or clamped and deformed due to overlarge clamping force when being clamped and punched is effectively prevented.
2. According to the invention, through the matching of the plurality of groups of sliding limiting devices and the workpiece clamping devices, if the punching force of punching is overlarge, the distance between two adjacent sliding limiting devices can be adjusted, and the arc-shaped inner support plate can play a role in supporting the inner wall of the arc-shaped workpiece; simultaneously, when the gaseous shrink in the extrusion bag, the interior extension board of arc softened and the softening of elasticity bending piece can increase the rotation deformation effect of extension board in the arc, prevent because the hardness of extension board is too big in the arc, and lead to the phenomenon that turned angle takes place to misplace or incline, and then the inner support board of arc of being convenient for carries out local supporting role to the inner wall of arc work piece.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is an assembly view of a drill and tap fixture and an arcuate workpiece of the present invention;
FIG. 2 is a perspective view of the drill-tapping fixture of the present invention;
FIG. 3 is a cross-sectional view of the drill-tapping fixture of the present invention;
FIG. 4 is a perspective view of the workpiece clamping device of the present invention;
FIG. 5 is an enlarged view of a portion of the invention at A in FIG. 4;
in the figure: the device comprises a positioning table 1, an annular sliding groove cavity 11, a sliding limiting device 2, a U-shaped sliding block 21, a locking groove 211, a locking block 22, a locking bolt 23, a fixing plate 24, a workpiece clamping device 3, a guide column 31, a clamping cylinder 32, a positioning guide plate 33, a sliding groove 331, an arc-shaped positioning groove 332, a guide block 34, a clamping rod 35, a swinging rod 36, a swinging strip 37, an arc-shaped inner support plate 38, an expansion cavity 381, a hard rubber layer 382, an elastic frosting layer 383, a limiting rotating rod 39, an annular support plate 4, an annular concave groove 41, an annular rubber support strip 5, an elastic bending sheet 6, a squeezing cavity 61, a squeezing bag 7, a corrugated rubber layer 71 and a limiting spring 8.
Detailed Description
A drilling and tapping jig according to an embodiment of the present invention will be described below with reference to fig. 1 to 5.
As shown in fig. 1-5, the drilling and tapping fixture of the present invention comprises a positioning table 1; the bottom end of the positioning table 1 is provided with an electromagnetic chuck, and the positioning table 1 is provided with an annular chute cavity 11; at least 3 sliding limiting devices 2 are arranged on the annular sliding groove cavity 11, and a workpiece clamping device 3 is arranged on each sliding limiting device 2;
the sliding limiting device 2 comprises a U-shaped sliding block 21, a locking block 22, a locking bolt 23 and a fixing plate 24; the U-shaped sliding block 21 is slidably mounted on the annular wall of the annular sliding groove cavity 11, and a locking groove 211 is formed in the bottom end face of the U-shaped sliding block 21; a locking block 22 is arranged in the groove; the bottom end of the locking bolt 23 is rotatably connected with the locking block 22, and the locking bolt 23 is rotatably connected with the U-shaped sliding block 21 through threads; a fixing plate 24 is fixed on the side wall of the U-shaped sliding block 21;
the workpiece clamping device 3 comprises a guide column 31, a clamping cylinder 32, a positioning guide plate 33, a guide block 34, a clamping rod 35, a swinging rod 36, a swinging strip 37, an arc-shaped inner support plate 38 and a limiting rotating rod 39; the guide column 31 is arranged on the side wall of the fixing plate 24, and a clamping cylinder 32 is fixed in the guide column 31; the other side wall of the fixed plate 24 is provided with a positioning guide plate 33, the positioning guide plate 33 is provided with a sliding groove 331, and the end part of the positioning guide plate 33 is provided with an arc-shaped positioning groove 332; the telescopic end of the clamping cylinder 32 is positioned in the sliding groove 331, and the telescopic end of the clamping cylinder 32 is provided with a guide block 34 through a rotating column; clamping rods 35 are symmetrically arranged on the positioning guide plate 33 through rotating columns, and the clamping rods 35 are rotatably connected with the guide blocks 34 through swinging rods 36; the end part of the clamping rod 35 is provided with a swinging strip 37, and an arc-shaped inner support plate 38 is rotatably arranged on the swinging strip 37 through a limiting rotating rod 39;
when the device works, when the metal sheet with the arc-shaped structure needs to be punched and tapped, an operator firstly adsorbs the positioning table 1 on a drilling and tapping machine tool through an electromagnetic chuck, loosens the locking bolt 23, stirs the U-shaped sliding block 21 to drive the workpiece clamping device 3 to move on the positioning table 1, and if the arc length of the arc-shaped metal sheet is too long, the distance between a plurality of U-shaped sliding blocks 21 is adjusted, so that the U-shaped sliding blocks 21 can be supported at three points on the positioning table 1; after the U-shaped sliding block 21 is locked and fixed by the locking block 22, the control unit controls the plurality of clamping cylinders 32 to extend, the telescopic rods of the clamping cylinders 32 drive the guide block 34 to slide in the sliding groove 331, so that the clamping rods 35 can be opened by the swinging rod 36, meanwhile, the operator rotates the arc inner support plates 38 to rotate the arc protrusions of the arc inner support plates 38 to the outside of the clamping rods 35, further, the arc metal workpiece to be processed is placed in the symmetrically arranged clamping rods 35, the arc positioning grooves 332 are used for positioning the arc metal workpiece, the control unit controls the plurality of clamping cylinders 32 to contract, the plurality of clamping cylinders 32 simultaneously drive the clamping rods 35 to clamp oppositely, after the inner wall of the clamping rod 35 is contacted with the outer wall of the arc metal workpiece, the operator rotates the arc inner support plates 38 to enable the arc protrusions of the arc inner support plates 38 to be positioned in the arc workpiece, and controls the clamping cylinders 32 to continue to clamp, the opposite clamping of the clamping rod 35 can enable the bottom ends of the arc-shaped inner support plates 38 to be mutually abutted, and with the increasing of the clamping force, the upper end surfaces of the inner support plates can be abutted against the inner wall of the arc-shaped workpiece, so that the arc-shaped metal sheet workpiece is clamped and positioned; through the matching of the plurality of groups of sliding limiting devices 2 and the workpiece clamping devices 3, the sliding limiting devices 2 can perform three-point positioning clamping work on arc-shaped metal thin-wall workpieces with different lengths, the clamping rods 35 are matched with the arc-shaped inner supporting plates 38, the opposite clamping rods 35 can clamp and fix the outer walls of the arc-shaped workpieces, the arc-shaped inner supporting plates 38 can support the inner walls of the arc-shaped workpieces, and the phenomenon that the arc-shaped thin-wall workpieces are broken or clamped and deformed due to overlarge clamping force when being clamped and punched is effectively prevented; if the punching force of punching is too large, the distance between two adjacent sliding limiting devices 2 can be adjusted, the arc-shaped inner support plate 38 can play a supporting role for the inner wall of the arc-shaped workpiece, and the phenomenon that the punching position of the workpiece is locally deformed due to too large punching force can be further reduced.
As an embodiment of the invention, an annular supporting disk 4 is slidably mounted in the annular chute cavity 11 through a supporting cylinder, and an annular rubber supporting strip 5 is arranged on the upper end surface of the annular supporting disk 4; the annular rubber supporting strip 5 is positioned right below the clamping rod 35; an annular concave groove 41 is formed in the annular supporting disk 4; during operation, when the clamping rod 35 clamps the arc work piece, the annular rubber support bar 5 arranged on the annular support disk 4 can support the bottom end of the clamping rod 35, so that the phenomenon that the clamping rod 35 is sunken due to overlarge drilling punching pressure when a machine tool drills the arc work piece is prevented, and the stable clamping operation of the clamping rod 35 on the arc work piece is further influenced.
As an embodiment of the present invention, an elastic bending piece 6 is disposed between the arc inner supporting plate 38 and the swinging bar 37, and a cross section of the elastic bending piece 6 is a zigzag structure; the top end of the elastic bending piece 6 is rotatably connected with a limiting rotating rod 39; when the arc inner support plate 38 rotates through the limiting rotating rod 39, the elastic bending piece 6 arranged between the arc inner support plate 38 and the swinging strip 37 can perform elastic tensioning operation on the arc inner support plate 38, so that the phenomenon that the arc inner support plate 38 is subjected to rotational abrasion or extrusion abrasion due to overlarge hardness between the arc inner support plate 38 and the swinging strip 37 when the arc inner support plate 38 rotates is prevented; meanwhile, when the arc inner support plate 38 supports the inner wall of the arc workpiece, the arranged elastic bending piece 6 can play a role in elastic limiting, and the phenomenon that when the symmetrical arc inner support plate 38 is extruded mutually under the action of clamping force, the arc inner support plate 38 degree swing strip 37 plays a role in extrusion impact, so that stable and safe support of the arc inner support plate 38 is influenced.
As an embodiment of the present invention, the elastic bending piece 6 is internally provided with an extrusion cavity 61; an expansion cavity 381 is formed in the arc-shaped inner support plate 38, and the expansion cavity 381 is communicated with the extrusion cavity 61 through an air guide groove; the limiting rotating rod 39 is of a cavity structure; the clamping rod 35 is provided with an extrusion bag 7, and the extrusion bag 7 is connected with a limiting rotating rod 39 of a cavity structure through an air duct; the limiting rotating rod 39 is communicated with the extrusion cavity 61 through an air guide groove; when the device works, when the arc-shaped inner supporting plates 38 are mutually abutted under the opposite clamping force of the clamping rod 35, the control unit controls the gas in the extrusion bag 7 to enter the extrusion cavity 61 through the limiting rotating rod 39 of the cavity structure so as to expand the elastic bending pieces 6, and the expansion of the elastic bending pieces 6 can improve the elastic supporting and limiting effects of the arc-shaped inner supporting plates 38; meanwhile, as the gas continuously enters the expansion cavity 381 through the gas guide groove, the arc-shaped inner support plate 38 can expand, and the expanded inner support plate can increase the supporting and resisting acting force on the inner wall of the arc-shaped workpiece; meanwhile, when the gas in the extrusion bag 7 contracts, the softening of the arc-shaped inner support plate 38 and the softening of the elastic bending sheet 6 can increase the rotating deformation effect of the arc-shaped inner support plate 38, so that the phenomenon that the rotating angle is dislocated or inclined due to the overlarge hardness of the arc-shaped inner support plate 38 is prevented, and further the arc-shaped inner support plate 38 can locally support the inner wall of the arc-shaped workpiece.
As an embodiment of the present invention, the extrusion bladder 7 is disposed on the inner wall of the clamping rod 35, and one side of the extrusion bladder 7 is provided with a corrugated rubber layer 71; a limiting spring 8 is vertically arranged in a wave trough of the corrugated rubber layer 71; during operation, the extrusion bag 7 is arranged on the inner wall of the clamping rod 35, when gas in the extrusion bag 7 is exhausted, the extrusion bag 7 can contract and deform due to contraction of the limiting spring 8, the clamping friction force of the clamping rod 35 on the outer wall of the arc-shaped workpiece can be increased due to the arranged corrugated rubber layer 71, the elastic clamping deformation capacity of the clamping rod 35 on the outer wall of the arc-shaped workpiece is increased, and the phenomenon that the workpiece is clamped and deformed due to overlarge hardness of the clamping rod 35 is avoided.
As an embodiment of the present invention, the inner arc-shaped wall of the inner arc-shaped plate 38 is provided with a hard rubber layer 382, and the outer arc-shaped wall of the inner arc-shaped plate 38 is provided with an elastic frosting layer 383; the end part of the arc inner support plate 38 is provided with a hard elastic layer; during work, when the gas in the arc inner support plate 38 is continuously increased, the elastic frosting layer 383 arranged on the outer wall of the arc inner support plate 38 expands, the expansion of the outer wall of the arc inner support plate 38 can increase the supporting action area of the arc inner support plate 38 on the inner wall of the arc workpiece, and further increase the arc supporting force of the arc inner support plate 38; meanwhile, as the gas continuously enters the arc-shaped inner supporting plate 38, the end part of the arc-shaped inner supporting plate 38 can extend out, so that the abutting force of the arc-shaped inner supporting plates 38 abutting against each other can act on the upper inner wall and the lower inner wall of the arc-shaped workpiece, and the supporting and abutting effect of the arc-shaped inner supporting plates 38 on the local drilling position of the arc-shaped workpiece is further increased.
The specific working process is as follows:
when the device works, when the metal sheet with the arc-shaped structure needs to be punched and tapped, an operator firstly adsorbs the positioning table 1 on a drilling and tapping machine tool through an electromagnetic chuck, loosens the locking bolt 23, stirs the U-shaped sliding block 21 to drive the workpiece clamping device 3 to move on the positioning table 1, and if the arc length of the arc-shaped metal sheet is too long, the distance between a plurality of U-shaped sliding blocks 21 is adjusted, so that the U-shaped sliding blocks 21 can be supported at three points on the positioning table 1; after the U-shaped sliding block 21 is locked and fixed by the locking block 22, the control unit controls the plurality of clamping cylinders 32 to extend, the telescopic rods of the clamping cylinders 32 drive the guide block 34 to slide in the sliding groove 331, so that the clamping rods 35 can be opened by the swinging rod 36, meanwhile, the operator rotates the arc inner support plates 38 to rotate the arc protrusions of the arc inner support plates 38 to the outside of the clamping rods 35, further, the arc metal workpiece to be processed is placed in the symmetrically arranged clamping rods 35, the arc positioning grooves 332 are used for positioning the arc metal workpiece, the control unit controls the plurality of clamping cylinders 32 to contract, the plurality of clamping cylinders 32 simultaneously drive the clamping rods 35 to clamp oppositely, after the inner wall of the clamping rod 35 is contacted with the outer wall of the arc metal workpiece, the operator rotates the arc inner support plates 38 to enable the arc protrusions of the arc inner support plates 38 to be positioned in the arc workpiece, and controls the clamping cylinders 32 to continue to clamp, the opposite clamping of the clamping rod 35 can make the bottom ends of the arc-shaped inner support plates 38 abut against each other, and with the increasing of the clamping force, the upper end surfaces of the inner support plates abut against the inner wall of the arc-shaped workpiece, so as to clamp and position the arc-shaped metal sheet workpiece.
In the description of the present invention, it is to be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (6)
1. A drilling and tapping clamp comprises a positioning table (1); the method is characterized in that: the bottom end of the positioning table (1) is provided with an electromagnetic chuck, and the positioning table (1) is provided with an annular chute cavity (11); at least 3 sliding limiting devices (2) are arranged on the annular sliding groove cavity (11), and a workpiece clamping device (3) is arranged on each sliding limiting device (2);
the sliding limiting device (2) comprises a U-shaped sliding block (21), a locking block (22), a locking bolt (23) and a fixing plate (24); the U-shaped sliding block (21) is slidably mounted on the annular wall of the annular sliding groove cavity (11), and a locking groove (211) is formed in the bottom end face of the U-shaped sliding block (21); a locking block (22) is arranged in the groove; the bottom end of the locking bolt (23) is rotatably connected with the locking block (22), and the locking bolt (23) is rotatably connected with the U-shaped sliding block (21) through threads; a fixing plate (24) is fixed on the side wall of the U-shaped sliding block (21);
the workpiece clamping device (3) comprises a guide post (31), a clamping cylinder (32), a positioning guide plate (33), a guide block (34), a clamping rod (35), a swinging rod (36), a swinging strip (37), an arc-shaped inner support plate (38) and a limiting rotating rod (39); the guide post (31) is arranged on the side wall of the fixing plate (24), and a clamping cylinder (32) is fixed in the guide post (31); a positioning guide plate (33) is arranged on the other side wall of the fixed plate (24), a sliding groove (331) is formed in the positioning guide plate (33), and an arc-shaped positioning groove (332) is formed in the end portion of the positioning guide plate (33); the telescopic end of the clamping cylinder (32) is positioned in the sliding groove (331), and the telescopic end of the clamping cylinder (32) is provided with a guide block (34) through a rotating column; clamping rods (35) are symmetrically arranged on the positioning guide plate (33) through rotating columns, and the clamping rods (35) are rotatably connected with the guide block (34) through swinging rods (36); the end part of the clamping rod (35) is provided with a swinging strip (37), and an arc-shaped inner support plate (38) is rotatably arranged on the swinging strip (37) through a limiting rotating rod (39).
2. The drill tapping jig of claim 1, wherein: an annular supporting disk (4) is slidably mounted in the annular chute cavity (11) through a supporting cylinder, and an annular rubber supporting strip (5) is arranged on the upper end face of the annular supporting disk (4); the annular rubber supporting strip (5) is positioned right below the clamping rod (35); an annular concave groove (41) is formed in the annular supporting disk (4).
3. The drill tapping jig of claim 1, wherein: an elastic bending piece (6) is arranged between the arc-shaped inner support plate (38) and the swinging strip (37), and the section of the elastic bending piece (6) is of a Z-shaped structure; the top end of the elastic bending piece (6) is rotatably connected with the limiting rotating rod (39).
4. The drill tapping jig of claim 3, wherein: an extrusion cavity (61) is formed in the elastic bending piece (6); an expansion cavity (381) is formed in the arc-shaped inner support plate (38), and the expansion cavity (381) is communicated with the extrusion cavity (61) through an air guide groove; the limiting rotating rod (39) is of a cavity structure; the clamping rod (35) is provided with an extrusion bag (7), and the extrusion bag (7) is connected with a limiting rotating rod (39) of the cavity structure through an air duct; the limiting rotating rod (39) is communicated with the extrusion cavity (61) through an air guide groove.
5. The drill tapping jig according to claim 4, wherein: the extrusion bag (7) is arranged on the inner wall of the clamping rod (35), and one side of the extrusion bag (7) is provided with a corrugated rubber layer (71); and a limiting spring (8) is vertically arranged in the trough of the corrugated rubber layer (71).
6. The drill tapping jig according to claim 4, wherein: the inner arc-shaped wall of the inner arc-shaped support plate (38) is provided with a hard rubber layer (382), and the outer arc-shaped wall of the inner arc-shaped support plate (38) is provided with an elastic frosting layer (383); the end part of the arc-shaped inner support plate (38) is provided with a hard elastic layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911190800.3A CN110948256A (en) | 2019-11-28 | 2019-11-28 | Drilling and tapping clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911190800.3A CN110948256A (en) | 2019-11-28 | 2019-11-28 | Drilling and tapping clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110948256A true CN110948256A (en) | 2020-04-03 |
Family
ID=69978765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911190800.3A Withdrawn CN110948256A (en) | 2019-11-28 | 2019-11-28 | Drilling and tapping clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110948256A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111745023A (en) * | 2020-07-18 | 2020-10-09 | 陈伯坚 | Precision mold for automobile parts |
| CN112917407A (en) * | 2020-12-30 | 2021-06-08 | 李亚呢 | Positioning device for machining clutch bearing |
| CN114473572A (en) * | 2022-02-27 | 2022-05-13 | 厦门锦海山金属制品有限公司 | Efficient tool clamp for machining plate-shaped workpiece |
-
2019
- 2019-11-28 CN CN201911190800.3A patent/CN110948256A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111745023A (en) * | 2020-07-18 | 2020-10-09 | 陈伯坚 | Precision mold for automobile parts |
| CN111745023B (en) * | 2020-07-18 | 2021-12-17 | 浙江双展精密机械股份有限公司 | Precision mold for automobile parts |
| CN112917407A (en) * | 2020-12-30 | 2021-06-08 | 李亚呢 | Positioning device for machining clutch bearing |
| CN114473572A (en) * | 2022-02-27 | 2022-05-13 | 厦门锦海山金属制品有限公司 | Efficient tool clamp for machining plate-shaped workpiece |
| CN114473572B (en) * | 2022-02-27 | 2022-12-20 | 厦门锦海山金属制品有限公司 | Efficient tool clamp for machining plate-shaped workpiece |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110948256A (en) | Drilling and tapping clamp | |
| CN201217084Y (en) | Numerically controlled drilling machine for section steel | |
| CN209503014U (en) | A kind of aluminum alloy doors and windows puncher | |
| CN210046329U (en) | Clamp for punching steel pipe | |
| CN111794786A (en) | Anchoring device | |
| CN106002357A (en) | Slim tube punching jig | |
| CN205852308U (en) | A kind of hydraulic drilling machine fixture for processing auto parts machinery mould | |
| CN218904479U (en) | Workpiece fixing device for machine tool | |
| KR20090090728A (en) | Vise of connecting type and clamping apparatus using the same | |
| CN214290983U (en) | Fixing clamp for radial drilling machine | |
| CN218746193U (en) | Turnover device | |
| CN219443541U (en) | Drilling auxiliary device for part machining | |
| CN219767436U (en) | Special-shaped piece clamping tool | |
| CN211439042U (en) | Positioning tool for bench drill | |
| CN212296430U (en) | Anchoring device | |
| CN220943260U (en) | Section bar inclined hole processingequipment | |
| CN212762313U (en) | Multi-angle special-shaped machining tool | |
| CN218659268U (en) | Grooving equipment for fluoroplastic workpiece | |
| CN211589276U (en) | Clamping structure of multi-angle rotary bench vice | |
| CN217571044U (en) | Planer type milling machine | |
| CN214490414U (en) | Expansion screw pulling device | |
| CN113696062B (en) | Special grinding clamp for lathe | |
| CN117428226B (en) | Drilling positioner that machining used | |
| CN215615222U (en) | Synchronous double-control double-drill-bit bench drill | |
| CN209867995U (en) | Drilling machine fixture for machining end face holes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200403 |