CN201979316U

CN201979316U - Fixture

Info

Publication number: CN201979316U
Application number: CN201120035830XU
Authority: CN
Inventors: 秦士来
Original assignee: JINJIANG WEITAN MACHINERY DEVELOPMENT Co Ltd
Current assignee: JINJIANG WEITAN MACHINERY DEVELOPMENT Co Ltd
Priority date: 2011-01-30
Filing date: 2011-01-30
Publication date: 2011-09-21
Anticipated expiration: 2021-01-30

Abstract

The utility model discloses a fixture which comprises a main seat body and a U-shaped base seat. The U-shaped base seat and the main seat body are fixed on a workbench, a cylinder with a central through hole is arranged at the upper part of the main seat body, the tail end of the cylinder is connected with the U-shaped base seat, a cylindrical pull rod penetrates the central through hole movably in the axial direction, the front end of the cylindrical pull rod has a taper expanding outward and extends out of the cylinder to be in the front of the upper part of the main seat body, an expansion sleeve is covered at the front end of the cylindrical pull rod, and is connected with a locking mechanism; a positioning block is arranged at the upper part of the main seat body and near the edge of the expansion sleeve, the rear end of the cylindrical pull rod is provided with threads and extends out of the cylinder to be in the middle of the U-shaped base seat, the threaded part of the rear end of the cylindrical pull rod is connected with a nut, and a turning handle is connected outside the nut. By using the fixture, an irregular workpiece with a basic through hole can be quickly and automatically positioned and clamped.

Description

Frock clamp

Technical field

The utility model relates to technical field of tooling clamps, especially a kind of irregular workpiece frock clamp of location automatically that allows.

Background technology

Usually, irregular workpiece is carried out machined, generally will process a datum level earlier on workpiece, utilize this datum level to position then, the hole, end face etc. of reprocessing other need the part of processing; As shown in Figure 5, to process a datum hole 100a earlier, utilize this datum hole 100a that workpiece 100 is positioned and clamps then, do not having under the situation of special fixture, need by survey tool such as dial gauge, ruler etc. workpiece to be positioned earlier, and then utilize a plurality of fixture blocks that workpiece is clamped, the dimensional tolerance of the low and very difficult assurance workpiece of this mode of operation efficient.

The utility model content

The technical problems to be solved in the utility model provides a kind of frock clamp, and it can make fast automatic location of irregular workpiece and the clamping with benchmark through hole, can guarantee workpiece corresponding size tolerance.

For achieving the above object, the technical solution of the utility model is: a kind of frock clamp, comprise main base frame, U font base, U font base is fixed on the workbench upper surface, the main base frame bottom is fixed on the side of workbench, main base frame top is fitted in the workbench upper surface, the cylinder of a band central through hole is arranged at main base frame top, described cylindrical end is connected near main base frame one side with U font base, one cylindrical pull bar can move axially and be arranged on the described cylindrical central through hole, be provided with circumferential positioner between cylindrical pull bar and the cylinder, described cylindrical pull bar front end has abducent tapering and stretches out the front that described cylinder is in main base frame top, the front end of described cylindrical pull bar is with an expansion sleeve, expansion sleeve connects the retaining mechanism that can make expansion sleeve move and lock expansion sleeve along cylindrical pull bar axis direction, near on the expansion sleeve edge locating piece is set on main base frame top, the rear end of described cylindrical pull bar is provided with screw thread and stretches out cylinder and is in U font base middle part, the rear end threaded portion of described cylindrical pull bar connects a nut, at turning handle of the outside connection of nut.

Above-mentioned frock clamp, the retaining mechanism of described expansion sleeve comprises that one is enclosed within on the cylinder and has externally threaded locking nut, one has screwed hole of centre and is fixed on positioning disk on the main base frame, described positioning disk matches by the external screw thread of screwed hole of centre and locking nut, described locking nut rear end connects one can make locking nut rotate and fixing detent mechanism, described locking nut front end connects a positioning disk that is tightened up mutually by bolt that passes main base frame and expansion sleeve, and described positioning disk is with axial same moved further, radially mode is connected setting with the front end of locking nut in relative rotation.

Above-mentioned frock clamp, described detent mechanism comprises handle set, handle, alignment pin, and handle set is fixed on the locking nut outer surface, and handle flexibly connects by Handle axis and handle set, also connect an alignment pin that is parallel to the locking nut axis on the handle, described positioning disk is provided with pin-and-hole.

Above-mentioned frock clamp, the bolt outer surface of described connection positioning disk and expansion sleeve is installed with fairlead.

Above-mentioned frock clamp, described cylindrical back end of tie rod has a push rod, and the removable U font base of being located at of push rod is away from main base frame one side, and U font base is provided with nut away from main base frame one side, is provided with spring between described push rod and the nut.

Above-mentioned frock clamp is provided with a retaining washer and an adjustment packing ring between described nut and the cylinder end.

Above-mentioned frock clamp, an axis and the perpendicular through hole of cylindrical pull bar axis are arranged at described main base frame bottom, one top is that the cylindrical T shape of notch cuttype push rod is through on the through hole for the cuboid bottom, the cylindrical end of described ladder type is provided with cam lock holding mechanism, also is provided with spring between T shape push rod notch cuttype cylinder and the cam lock holding mechanism.

Above-mentioned frock clamp, described cam lock holding mechanism comprises camshaft, camshaft holder, handle, handle set, handle is fixed on the handle set, handle set is connected with camshaft, camshaft is contained on the camshaft holder, and the bottom of camshaft holder and main base frame fixes, and camshaft strap cam part contacts setting with the cylindrical end of described T shape push rod notch cuttype.

The utility model utilizes expansion sleeve and positions near the locating piece of expansion sleeve edge setting and the datum hole of irregular workpiece on main base frame top, can utilize the back-up block that connects on the T shape push rod cuboid that irregular workpiece is positioned with the end face that the datum hole axis parallels again, its location makes things convenient for speed fast; The clamping of irregular workpiece utilizes cylindrical pull bar front end to have abducent tapering and makes the expansion sleeve expansion, rapid clamping work pieces, and the efficient height, and can guarantee the corresponding dimensional tolerance of workpiece.

Description of drawings

Fig. 1 is the cutaway view of the utility model embodiment;

Fig. 2 is the left view of the utility model embodiment;

Fig. 3 is the main base frame cutaway view of the utility model embodiment;

Fig. 4 is the T shape push rod cutaway view of the utility model embodiment;

Fig. 5 is the cutaway view of workpiece to be processed;

Fig. 6 is the vertical view of workpiece to be processed.

The specific embodiment

Below in conjunction with accompanying drawing and concrete embodiment the utility model is described in further detail.

Shown in Figure 1, a kind of frock clamp, comprise main base frame 1, U font base 2, U font base is fixed on workbench 3 upper surfaces, main base frame 1 bottom is fixed on the side of workbench 3, main base frame 1 top is fitted in workbench 3 upper surfaces, the cylinder 1a of a band central through hole is arranged at main base frame 1 top, the end of cylinder 1a is connected near main base frame 1 one sides with U font base 2, a cylindrical pull bar 4 is through on the central through hole of cylinder 1a, there is a keyway 4a at cylindrical pull bar 4 middle parts, the feather key 5 shorter than keyway length with the length on the central through hole inner surface that is fixed on cylinder 1a matches, cylindrical pull bar 4 front ends have abducent tapering 4b and stretch out the front that described cylinder 1a is in main base frame 1 top, the front end of cylindrical pull bar 4 is with an expansion sleeve 6, expansion sleeve 6 also connects a retaining mechanism 7 that can make expansion sleeve 6 move and can lock expansion sleeve 6 along cylindrical pull bar 4 axis directions, near on expansion sleeve 6 edges locating piece 8 is set on main base frame 1 top, the rear end of cylindrical pull bar 4 is threaded and stretches out the middle part that cylinder 1a is in U font base 2, the rear end of cylindrical pull bar 4 also connects a bull nut 9, at handle 10 that makes things convenient for 9 rotations of bull nut of bull nut 9 outside connections.

Retaining mechanism 7 comprises that one is enclosed within cylinder 1a and goes up and have an externally threaded locking nut 71, one has screwed hole of centre and is fixed on positioning disk 72 on the main base frame 1, positioning disk 72 matches by the external screw thread of center screw thread and locking nut 71, locking nut 71 rear ends connect one can make locking nut rotate and fixing detent mechanism 73, locking nut 71 front ends connect a positioning disk 75 that is tightened up mutually by bolt 74 that passes main base frame 1 top through hole and expansion sleeve 6, and positioning disk 75 can rotate mutually and can be moved along locking nut 71 axis by locking nut 71 drives with the front end of locking nut 71.

Positioning disk 75 also can connect a terminal pad 76, and terminal pad 76 is connected with the outer surface of locking nut 71 can relatively rotate with the exterior face of locking nut 71 and can be driven by locking nut 71 and moves along locking nut 71 axis directions.

Detent mechanism 73 comprises handle set 731, handle 732, alignment pin 733, handle set 731 is fixed on locking nut 71 outer surfaces, handle 732 flexibly connects by Handle axis 734 and handle set 731, also connect an alignment pin 733 that is parallel to locking nut 71 axis on the handle 732, on the positioning disk 72 pin-and-hole is arranged, alignment pin 733 is matched with pin-and-hole on the positioning disk 72 or throw off rotating on the Handle axis 734 by handle 731.

Bolt 74 outer surfaces that connect positioning disk 75 and expansion sleeve 6 are installed with fairlead 11.

There is a push rod 12 cylindrical pull bar 4 rear ends, and push rod 12 is through on the through hole of U font base 2 away from main base frame 1 one sides, and U font base 2 is provided with spring 14 away from also fixing a nut 13 on main base frame 1 one side through hole between push rod 12 and the nut 13.

Be provided with a retaining washer 15 and an adjustment packing ring 16 between bull nut 9 and the cylinder 1a end.

An axis and the perpendicular through hole 1c of cylindrical pull bar 4 axis are arranged in main base frame 1 bottom, it is that the cylindrical T shape of notch cuttype push rod 17 is through on the through hole 1c for the cuboid bottom that a top is arranged, the cylindrical terminal cam lock holding mechanism 18 that connects of T shape push rod 17 notch cuttypes also is provided with spring 19 between T shape push rod 17 notch cuttype cylinders and the cam lock holding mechanism 18.

Cam lock holding mechanism 18 comprises camshaft 181, camshaft holder 182, handle 183, handle set 184, handle 183 is fixed on the handle set 184, handle set 184 is connected with camshaft 181, camshaft 181 is contained on the cam chair 182, cam chair 182 fixes with the bottom of main base frame 1, the cylindrical end of camshaft 181 strap cams part and T shape push rod 17 notch cuttypes near, be connected with back-up block 21 on the T shape push rod 17 cuboid 17b.

When the utility model uses, make the alignment pin 733 of detent mechanism 73 break away from pin-and-hole on the positioning disks 72 earlier, utilize handle 732 rotation lock nuts 71, driving expansion sleeve 6 moves toward cylindrical pull bar 4 back extreme directions, this moment, workpiece 100 just can conveniently be set on the expansion sleeve 6, handle 183 on the oscillating cam retaining mechanism 18, make back-up block 21 on the T shape push rod 17 cuboid 17b withstand the end face 100b of workpiece 100, the end face 100b of workpiece 100 is vertical with datum hole 100a, utilizing handle 10 to rotate bull nut 9 makes cylindrical pull bar 4 move toward the rear end, drive expansion sleeve 6 distending clamping work pieces 100, follow handle 732 backward rotation locking nuts 71, the end face 100b that expansion sleeve 6 drive workpiece 100 are moved until workpiece 100 to cylindrical pull bar 4 rear ends contacts the location of finishing workpiece with locating piece 8, and the dismounting of workpiece is carried out with the order opposite with abovementioned steps.

Below only be preferred embodiment of the utility model, the variation that those skilled in the art does to be equal to by claim all should fall into the protection domain of this case.

Claims

1. frock clamp, comprise main base frame, U font base, U font base is fixed on the workbench upper surface, the main base frame bottom is fixed on the side of workbench, main base frame top is fitted in the workbench upper surface, the cylinder of a band central through hole is arranged at main base frame top, described cylindrical end is connected near main base frame one side with U font base, it is characterized in that: a cylindrical pull bar can move axially and be arranged on the described cylindrical central through hole, be provided with circumferential positioner between cylindrical pull bar and the cylinder, described cylindrical pull bar front end has abducent tapering and stretches out the front that described cylinder is in main base frame top, the front end of described cylindrical pull bar is with an expansion sleeve, expansion sleeve connects the retaining mechanism that can make expansion sleeve move and lock expansion sleeve along cylindrical pull bar axis direction, near on the expansion sleeve edge locating piece is set on main base frame top, the rear end of described cylindrical pull bar is provided with screw thread and stretches out cylinder and is in U font base middle part, the rear end threaded portion of described cylindrical pull bar connects a nut, at turning handle of the outside connection of nut.

2. frock clamp according to claim 1, it is characterized in that: the retaining mechanism of described expansion sleeve comprises that one is enclosed within on the cylinder and has externally threaded locking nut, one has screwed hole of centre and is fixed on positioning disk on the main base frame, described positioning disk matches by the external screw thread of screwed hole of centre and locking nut, described locking nut rear end connects one can make locking nut rotate and fixing detent mechanism, described locking nut front end connects a positioning disk that is tightened up mutually by bolt that passes main base frame and expansion sleeve, and described positioning disk is with axial same moved further, radially mode is connected setting with the front end of locking nut in relative rotation.

3. frock clamp according to claim 2, it is characterized in that: described detent mechanism comprises handle set, handle, alignment pin, handle set is fixed on the locking nut outer surface, handle flexibly connects by Handle axis and handle set, also connect an alignment pin that is parallel to the locking nut axis on the handle, described positioning disk is provided with pin-and-hole.

4. frock clamp according to claim 2 is characterized in that: the bolt outer surface of described connection positioning disk and expansion sleeve is installed with fairlead.

5. frock clamp according to claim 1, it is characterized in that: described cylindrical back end of tie rod has a push rod, the removable U font base of being located at of push rod is away from main base frame one side, and U font base is provided with nut away from main base frame one side, is provided with spring between described push rod and the nut.

6. frock clamp according to claim 1 is characterized in that: be provided with a retaining washer and an adjustment packing ring between described nut and the cylinder end.

7. according to the described frock clamp of each claim of claim 1 to 6, it is characterized in that: an axis and the perpendicular through hole of cylindrical pull bar axis are arranged at described main base frame bottom, one top is that the cylindrical T shape of notch cuttype push rod is through on the through hole for the cuboid bottom, the cylindrical end of described ladder type is provided with cam lock holding mechanism, also is provided with spring between T shape push rod notch cuttype cylinder and the cam lock holding mechanism.

8. frock clamp according to claim 7, it is characterized in that: described cam lock holding mechanism comprises camshaft, camshaft holder, handle, handle set, handle is fixed on the handle set, handle set is connected with camshaft, camshaft is contained on the camshaft holder, and the bottom of camshaft holder and main base frame fixes, and camshaft strap cam part contacts setting with the cylindrical end of described T shape push rod notch cuttype.