Special fixture for small regular workpieces
Technical Field
The utility model relates to a work piece holder designs technical field in the machine-building trade, especially relates to a press from both sides tight fixed special fixture to small-size regular work piece in batches.
Background
In the field of mechanical manufacturing and processing, a plurality of workpieces are in standard shapes, and due to large use amount, higher requirements are placed on manufacturing and production, particularly clamping and positioning of the workpieces. The workpiece is small in size and high in processing speed, so that clamping is extremely inconvenient, workers are high in labor intensity due to frequent manual material replacement, processing and clamping, and production efficiency is low. The existing small regular workpiece clamping tool is not specially designed, so that the clamping tool can only be used for clamping a single workpiece or a few workpieces, a clamp needs to be frequently operated in the machining process, the operation is complex, and the practical requirements of clamping and machining small regular workpieces in batches cannot be met. And is also not suitable for continuous processing of careful workpieces in batches.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome the above-mentioned weak point of small-size rule work piece clamping apparatus among the prior art, provide one kind can be through tight operation clamping in batches to small-size rule work piece of a clamp, can effectively reduce the clamping number of times of work piece, reduce workman's intensity of labour, very big improvement production efficiency's small-size rule work piece special fixture.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses a small-size regular work piece special fixture, including anchor clamps bottom plate, clamping mechanism and positioning mechanism that pushes down, the anchor clamps bottom plate top surface is equipped with a plurality of work piece constant head tanks that can hold at least one work piece and place, clamping mechanism includes slider and compact heap, the slider sets up in one side of work piece constant head tank, slider slip connection anchor clamps bottom plate and slip direction perpendicular anchor clamps bottom plate, the compact heap is arranged in the work piece constant head tank and is close to the one end of slider, compact heap one end rotation connection slider; the pressing positioning mechanism comprises a pressing strip, a pressing bolt and a clamp mechanism, the pressing bolt is vertically arranged along the pressing strip, the pressing bolt is in one-to-one correspondence with the sliding piece, the bottom end of the pressing bolt penetrates through the pressing strip downwards, and the clamp mechanism is connected with the pressing strip.
At least one workpiece can be placed in each workpiece positioning groove, and the plurality of workpiece positioning grooves are formed in the clamp bottom plate, so that the capacity of clamping the workpieces can be effectively increased. The clamp mechanism can press down and lock the pressing strip, so that the pressing bolt is driven to press the sliding piece downwards. Because the compact heap is connected with the slider rotation, the slider compresses tightly down the back of targetting in place, can drive the compact heap and exert thrust to the work piece to press from both sides tight in the work piece constant head tank with every work piece. The pressing bolts are connected with each other through the pressing strips, so that the sliding parts can be pressed down simultaneously, and clamping operation is carried out on the workpieces in the workpiece positioning grooves, so that the small regular workpieces can be clamped in batches through one-time clamping operation, the clamping times of the workpieces can be effectively reduced, the labor intensity of workers is reduced, and the production efficiency is greatly improved. And the workpiece is paved on the top surface of the bottom plate of the clamp, so that the machining operations of the workpiece such as drilling and the like are facilitated.
Preferably, the slider includes slider and connecting block, the work piece constant head tank arranges a plurality of rows with two rows of mode that set up side by side, is equipped with the storage tank that can hold the connecting block between two work piece constant head tanks of every row, the storage tank both sides are equipped with the spout of intercommunication work piece constant head tank, the connecting block both sides respectively are equipped with a slider, the slider shape is rectangular shape, slider middle part sliding connection spout, slider one end horizontal rotation connects the connecting block, and the compressing block is connected in the slider other end horizontal rotation.
According to the technical scheme of manually clamping the workpieces through the bolts in the prior art, the pressing force of the bolts on the workpieces cannot be controlled, so that the pressing force on each workpiece is different. And the utility model discloses a through slider, connect fast and compress tightly the interlock mechanism that the block becomes and compress tightly the work piece, and all hold-down bolts pass through the layering and realize the interlock to when making at every turn the tight operation of clamp, all hold-down bolts push down the degree of depth unanimously, and then make all compact heap unanimous to the packing force of work piece, guarantee the clamping quality of work piece.
Preferably, a cavity is formed in the connecting block, the cavity extends to the two side faces, facing the workpiece positioning groove, of the connecting block, a pin horizontally inserted into the cavity is arranged on the connecting block, and one end of the sliding block is inserted into the cavity and rotatably connected with the pin.
The sliding blocks are arranged on two sides of the connecting block and are in a herringbone structure, when the connecting block slides downwards, the sliding blocks are pressed downwards to enable the sliding blocks to be parallel to the clamp bottom plate, two ends of the sliding blocks push the pressing blocks to press workpieces to two sides, and the workpieces are positioned; when the connecting block slides upwards, the sliding block is pulled to incline, so that the pressing force of the pressing block on the workpiece is released, and the positioning of the workpiece is released.
Preferably, a positioning block is arranged above the connecting block, a through hole capable of accommodating the connecting block to slide up and down is formed in the middle of the positioning block, a strip-shaped groove capable of accommodating the sliding block to slide up and down is formed in the side surface of the positioning block, the bottom end of the strip-shaped groove is open, the positioning block is covered above the connecting block, and the bottom of the positioning block is inserted into the accommodating groove; the bottom end of the compression bolt penetrates through the pressing strip downwards and extends into the through hole.
The positioning block mainly plays a role in sliding displacement of the connecting block and the sliding block in the limiting sliding part, and the connecting block and the sliding block are prevented from being separated from the clamp bottom plate. The cavity formed by splicing the positioning block and the accommodating groove provides an area for the connecting block to slide up and down, and the strip-shaped groove on the positioning block and the upper groove of the accommodating cavity are spliced to form the effect of driving the limiting guide sliding block in the sliding area.
Preferably, the bottom end of the compression bolt penetrates through the pressing strip downwards and is located above the connecting block, the bottom end of the compression bolt is connected with the top of the connecting block in a sliding mode, an inner hole is formed in the end face of the bottom end of the compression bolt, a spring is arranged in the inner hole, and the spring compresses the connecting block.
The pressing bolts are connected through pressing strips, unified control of the pressing bolts is achieved through the pressing strips, and when the pressing bolts press down, the linkage mechanisms of the connecting blocks, the sliding blocks and the pressing blocks press the workpiece tightly. The bottom end of the pressing bolt is connected with the connecting block in a sliding mode and is provided with the spring, the spring compresses the connecting block in a natural state, the spring can play a role in buffering and stably compressing the connecting block, the positioning stability of a workpiece is improved, and the service life of the mechanism is prolonged.
Preferably, a vertical sliding pipe is arranged at the top of the connecting block, an annular fastener is arranged at the top of the sliding pipe, a limiting ring is coaxially sleeved at the bottom end of the compression bolt, the compression bolt is inserted into the sliding pipe, and the limiting ring is located below the annular fastener.
The compression bolt is connected with the sliding pipe in a sliding mode, and the annular fastener is used for limiting sliding displacement between the compression bolt and the sliding pipe by blocking the limiting ring. Therefore, when the compression bolt is pressed down, the sliding pipe can play a role in limiting and guiding, and meanwhile, the spring is limited, so that the spring is prevented from deviating. The spring plays a role in compressing the connecting block and giving consideration to buffering; and when the compression bolt moves upwards, the connecting block and the sliding block can be lifted, so that the compression block is driven to unlock the workpiece.
Preferably, a cylindrical sliding groove is formed in the top of the connecting block, and the bottom end of the compression bolt is in sliding connection with the cylindrical sliding groove.
The compression bolt bottom and the cylindrical sliding groove are connected in a sliding mode, the cylindrical sliding groove can play a limiting and guiding role, and meanwhile the spring is limited, so that the spring is prevented from being deviated.
Preferably, the clamp mechanism comprises a base, a handle, a pressure lever and a connecting rod, wherein one end of the pressure lever is connected with a compression bolt positioned in the middle, one side of the other end of the pressure lever is rotatably connected with the base, the other side of the pressure lever is rotatably connected with the tail end of the handle, one end of the connecting rod is rotatably connected with the base, and the other end of the connecting rod is rotatably connected with the middle part of; one end of the pressure lever far away from the base is connected with the pressure bar.
The base, the handle, the pressure lever and the connecting rod form a four-bar linkage. When the handle is pressed down, the tail end of the handle lifts one end of the pressure rod, which is far away from the pressure bolt, so that the tail end of the pressure rod presses down to compress the screw, and meanwhile, the handle presses down the connecting rod to lock the whole mechanism, so that all workpieces are compressed. When the workpiece is unlocked, the handle is lifted, the lifting connecting rod releases the locking of the mechanism, and the pressing rod lifts the pressing bolt to unlock the workpiece.
Preferably, the top surface of the clamp bottom plate is provided with a plurality of notches at the edge of the workpiece positioning groove.
The notch is convenient for fingers to stretch into the notch, so that the workpiece is grabbed from the workpiece positioning groove, and the workpiece is convenient to unload.
Preferably, the clamp bottom plate is provided with support blocks below two ends of the pressing strip. The top surface of the supporting block and the top surface of the positioning block are equal in height.
The supporting shoe plays the effect of supporting the layering and restriction layering pushing down the height, prevents that the layering from pushing down excessively and causing the mechanism to damage.
Therefore, the utility model discloses following beneficial effect has: 1, small regular workpieces are clamped in batches through one-time clamping operation, the clamping times of the workpieces can be effectively reduced, the labor intensity of workers is reduced, and the production efficiency is greatly improved; 2, the workpiece is flatly paved on the top surface of the bottom plate of the clamp, so that the machining operations of the workpiece such as drilling and the like are facilitated; 3, when the workpiece is clamped every time, the pressing force of all the pressing blocks on the workpiece is consistent, so that the clamping quality of the workpiece is ensured; 4 the workpiece is pressed and unlocked through the clamp mechanism, the structure is simplified, the manufacturing cost is low, and the operation is convenient.
Drawings
Fig. 1 is a schematic structural view of a small regular workpiece special fixture according to a first embodiment of the present invention.
Fig. 2 is an exploded view of a small regular workpiece special fixture according to a first embodiment of the present invention.
Fig. 3 is a schematic top view of a small regular workpiece-dedicated jig according to a first embodiment of the present invention.
Fig. 4 is a schematic sectional view of a small regular workpiece-dedicated fixture according to a first embodiment of the present invention.
Fig. 5 is a schematic sectional view of a small regular workpiece-dedicated jig according to a second embodiment of the present invention.
Fig. 6 is a schematic sectional view of a small regular workpiece-dedicated jig according to a third embodiment of the present invention.
In the figure:
1. a clamp base plate; 101. a workpiece positioning groove; 102. a containing groove; 103 chute; 104. a notch; 2. positioning blocks; 201. a through hole; 202. a strip-shaped groove; 3. a compression block; 4. a slider; 5. connecting blocks; 501. a pin; 502. a slide pipe; 503. a loop fastener; 504. a cylindrical chute; 6. layering; 7. a hold-down bolt; 701. an inner bore; 702. a spring; 703. a limiting ring; 8. a clamp mechanism; 801. a base; 802. a handle; 803. a pressure lever; 804. a connecting rod; 9. a support block; 10. and (5) a workpiece.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description.
Example one
The utility model discloses a small-size regular work piece special fixture, including anchor clamps bottom plate 1, clamping mechanism and pushing down positioning mechanism, 1 top surface of anchor clamps bottom plate is equipped with a plurality of work piece constant head tanks 101 that can hold at least one work piece and place. The workpiece positioning slot 101 in this embodiment can accommodate two workpieces side by side. The workpiece positioning grooves 101 are arranged in rows in a manner that two rows are arranged side by side. The top surface of the clamp base plate 1 is provided with a plurality of notches 104 at the edge of the workpiece positioning groove 101.
The clamping mechanism comprises a sliding part and a pressing block 3, the sliding part is arranged on one side of the workpiece positioning groove 101, the sliding part is connected with the clamp bottom plate 1 in a sliding mode, and the sliding direction of the sliding part is perpendicular to the clamp bottom plate 1. The slider comprises a slider 4 and a connecting block 5. The workpiece positioning grooves 101 are arranged in a plurality of rows in a manner that two rows are arranged side by side, an accommodating groove 102 capable of accommodating the connecting block 5 is arranged between two workpiece positioning grooves 101 in each row, and sliding grooves 103 communicated with the workpiece positioning grooves 101 are arranged on two sides of the accommodating groove 102.
The connecting block 5 is internally provided with a cavity, the cavity extends to the two side faces, facing the workpiece positioning groove 101, of the connecting block 5, and the connecting block 5 is provided with a pin 501 horizontally inserted into the cavity. Two sides of the connecting block 5 are respectively provided with a sliding block 4, the sliding block 4 is in a long strip shape, and the middle part of the sliding block 4 is in sliding connection with a sliding groove 103. One end of the sliding block 4 is inserted into the cavity and rotates to connect the pin 501, and the rotating shaft is horizontal and vertical to the length direction of the workpiece positioning groove 101. The other end of the sliding block 4 is horizontally and rotatably connected with the pressing block 3, and the rotating shaft is horizontal and vertical to the length direction of the workpiece positioning groove 101.
The sliding blocks 4 are arranged on two sides of the connecting block 5 and are in a herringbone structure, when the connecting block 5 slides downwards, the sliding blocks 4 are pressed downwards to enable the sliding blocks 4 to be parallel to the clamp bottom plate 1, two ends of the sliding blocks 4 push the pressing blocks 3 to press workpieces to two sides, and the workpieces are positioned; when the connecting block 5 slides upwards, the sliding block 4 is pulled to incline, so that the pressing force of the pressing block 3 on the workpiece is released, and the positioning of the workpiece is released.
Connecting block 5 top is equipped with locating piece 2, and 2 middle parts of locating piece set up and to hold connecting block 5 gliding through-hole 201 from top to bottom, and 2 side settings of locating piece hold slider 4 gliding bar groove 202 from top to bottom, bar groove 202 bottom opening, 2 covers of locating piece are located connecting block 5 top, and 2 bottoms of locating piece insert in storage tank 102.
The positioning block 2 mainly plays a role in limiting sliding displacement of the connecting block 5 and the sliding block 4 in the sliding part, and prevents the connecting block 5 and the sliding block 4 from being separated from the clamp bottom plate 1. The cavity formed by splicing the positioning block 2 and the accommodating groove 102 provides an area for the connecting block 5 to slide up and down, and the strip-shaped groove 202 on the positioning block 2 and the upper sliding groove 103 on the accommodating cavity are spliced to form the effect of driving the limiting guide sliding block 4 in the sliding area.
The pressing positioning mechanism comprises a pressing strip 6, a pressing bolt 7 and a clamp mechanism 8. The compression bolt 7 is vertically arranged along the pressing strip 6. The compression bolt 7 is in threaded connection with the compression bar 6. The compression bolts 7 correspond to the connecting blocks 5 one by one. The bottom end of the pressing bolt 7 penetrates through the pressing strip 6 downwards and extends into the through hole 201 to be located above the connecting block 5.
The clamp mechanism 8 comprises a base 801, a handle 802, a pressure lever 803 and a connecting rod 804, wherein one end of the pressure lever 803 is connected with a compression bolt 7 positioned in the middle, one side of the other end of the pressure lever 803 is rotatably connected with the base 801, the other side of the other end of the pressure lever 803 is rotatably connected with the tail end of the handle 802, one end of the connecting rod 804 is rotatably connected with the base 801, and the other end of the connecting rod 804 is rotatably; one end of the pressure rod 803 far away from the base 801 is connected with the pressure strip 6.
The base 801, the handle 802, the pressure bar 803 and the connecting rod 804 form a four-bar 804 mechanism. When the handle 802 is pressed down, the tail end of the handle 802 lifts one end of the pressure rod 803 far away from the pressure bolt 7, so that the tail end of the pressure rod 803 presses down to press the pressure screw, and meanwhile, the handle 802 presses down the connecting rod 804 to lock the whole mechanism, so that all workpieces are pressed down. When unlocking, the handle 802 is lifted, the upward lifting link 804 releases the mechanism lock, and the press rod 803 lifts the press bolt 7 to unlock the workpiece.
The pressing bolts 7 are connected through the pressing strips 6, the pressing bolts 7 are controlled in a unified mode through the pressing strips 6, and when the pressing bolts 7 press down, the linkage mechanisms of the connecting block 5, the sliding block 4 and the pressing block 3 are pressed tightly to press the workpiece.
Supporting blocks 9 are arranged below the clamp bottom plate 1 at two ends of the pressing strip 6. The top surface of the supporting block 9 and the top surface of the positioning block 2 are equal in height. The supporting block 9 plays a role in supporting the pressing strip 6 and limiting the pressing height of the pressing strip 6, and prevents the pressing strip 6 from excessively pressing to cause mechanism damage.
In this embodiment, two workpieces 10 can be placed in each workpiece positioning groove 101, and the plurality of workpiece positioning grooves 101 arranged on the clamp bottom plate 1 can effectively increase the clamping capacity of the workpieces 10. The clamp mechanism 8 can press down and lock the pressing strip 6, so as to drive the pressing bolt 7 to press the connecting block 5 downwards. Because the pressing block 3, the sliding block 4 and the connecting block 5 are sequentially and rotatably connected, after the sliding part is pressed downwards in place, the sliding part can drive the pressing block 3 to apply thrust to the workpieces 10, so that each workpiece 10 is clamped in the workpiece positioning groove 101. The pressing bolts 7 are connected with each other through the pressing strips 6, so that the sliding parts can be pressed down simultaneously, clamping operation is carried out on the workpieces 10 in the workpiece positioning grooves 101, the small regular workpieces 10 can be clamped in batches through one-time clamping operation, the clamping times of the workpieces 10 can be effectively reduced, the labor intensity of workers is reduced, and the production efficiency is greatly improved. And the workpiece 10 is paved on the top surface of the clamp bottom plate 1, so that the machining operation of the workpiece 10 such as drilling and the like is facilitated.
In the technical scheme of manually clamping the workpieces 10 through bolts, which is commonly used in the prior art, the pressing force of the bolts on the workpieces 10 cannot be controlled, so that the pressing force on each workpiece 10 is different. And the utility model discloses a link gear through slider 4, connection soon and compact heap 3 constitution compresses tightly work piece 10, and all clamp bolt 7 realize the interlock through layering 6 to when making the tight operation of clamp at every turn, all clamp bolt 7 push down the degree of depth unanimously, and then make all compact heaps 3 unanimous to the packing force of work piece 10, guarantee the clamping quality of work piece 10.
Example two
The embodiment is a further optimized scheme for the small regular workpiece special fixture provided by the first embodiment, and the greatest difference between the first embodiment and the second embodiment is as follows:
the bottom end of the compression bolt 7 penetrates through the pressing strip 6 downwards and is located above the connecting block 5, and the bottom end of the compression bolt 7 is connected with the top of the connecting block 5 in a sliding mode. The top of the connecting block 5 is provided with a vertical sliding tube 502, the top of the sliding tube 502 is provided with an annular fastener 503, the bottom end of the compression bolt 7 is coaxially sleeved with a limiting ring 703, the compression bolt 7 is inserted into the sliding tube 502, and the limiting ring 703 is positioned below the annular fastener 503. An inner hole 701 is formed in the end face of the bottom end of the pressing bolt 7, a spring 702 is arranged in the inner hole 701, and the spring 702 presses the connecting block 5.
The pressing bolts 7 are connected through the pressing strips 6, the pressing bolts 7 are controlled in a unified mode through the pressing strips 6, and when the pressing bolts 7 press down, the linkage mechanisms of the connecting block 5, the sliding block 4 and the pressing block 3 are pressed tightly to press the workpiece. The bottom end of the pressing bolt 7 is connected with the connecting block 5 in a sliding mode, the spring 702 is arranged on the connecting block 5 in a pressing mode, the spring 702 compresses the connecting block 5 in a natural state, the spring 702 can play a role in buffering and stably compressing the connecting block 5, positioning stability of a workpiece is improved, and service life of the mechanism is prolonged.
The pressing bolt 7 is slidably connected with the slide pipe 502, and the annular fastener 503 limits the sliding displacement between the pressing bolt 7 and the slide pipe 502 by blocking the limiting ring 703. Therefore, when the hold-down bolt 7 is pressed down, the sliding pipe 502 can play a role in limiting and guiding, and meanwhile, the spring 702 is limited, so that the spring 702 is prevented from deviating. The spring 702 plays a role in compressing the connecting block 5 and giving consideration to buffering; and when the pressing bolt 7 moves upwards, the connecting block 5 and the sliding block 4 can be lifted, so that the pressing block 3 is driven to unlock the positioning of the workpiece.
EXAMPLE III
The embodiment is a further optimized scheme for the small regular workpiece special fixture provided by the first embodiment, and the greatest difference between the first embodiment and the second embodiment is as follows:
7 bottom ends of the hold-down bolts penetrate through the pressing strips 6 downwards and are located above the connecting block 5, the bottom ends of the hold-down bolts are connected with the top of the connecting block 5 in a sliding mode, inner holes 701 are formed in the end faces of the bottom ends of the hold-down bolts, springs 702 are arranged in the inner holes 701, and the springs 702 compress the connecting block 5.
The top of the connecting block 5 is provided with a cylindrical sliding groove 504, and the bottom end of the hold-down bolt 7 is slidably connected with the cylindrical sliding groove 504.
The pressing bolts 7 are connected through the pressing strips 6, the pressing bolts 7 are controlled in a unified mode through the pressing strips 6, and when the pressing bolts 7 press down, the linkage mechanisms of the connecting block 5, the sliding block 4 and the pressing block 3 are pressed tightly to press the workpiece. The bottom end of the pressing bolt 7 is connected with the connecting block 5 in a sliding mode, the spring 702 is arranged on the connecting block 5 in a pressing mode, the spring 702 compresses the connecting block 5 in a natural state, the spring 702 can play a role in buffering and stably compressing the connecting block 5, positioning stability of a workpiece is improved, and service life of the mechanism is prolonged.
The bottom end of the compression bolt 7 is connected with the cylindrical sliding groove 504 in a sliding mode, the cylindrical sliding groove 504 can play a role in limiting and guiding, meanwhile, the spring 702 is limited, and the spring 702 is prevented from being deviated.