Auxiliary fixture for clamping narrow-face large workpiece of vertical lathe
Technical Field
The utility model relates to an auxiliary fixture for clamping a narrow-face large workpiece of a vertical lathe in the technical field of workpiece lathe machining.
Background
The vertical lathe is used for cutting the outer surface of a workpiece. And four clamping mechanisms are symmetrically arranged on the working table surface of the vertical lathe, the front faces of clamping heads of the clamping mechanisms are propped against the outer peripheral side faces of the workpiece to be processed, the workpiece is clamped and fixed through the mutual matching of the four clamping heads, meanwhile, the bottom of the side faces of the workpiece is supported by a cylindrical supporting block, the workpiece is processed by a turning tool, and the workpiece is ensured to be quite stable in the processing process and cannot deviate. However, the bottoms of the peripheral sides of some workpieces are narrower, which results in that the cylindrical supporting blocks partially extend out of the bottoms of the workpieces, and in this way, the turning tool is likely to contact with the cylindrical supporting blocks in the processing process, so that potential safety hazards are brought.
Disclosure of utility model
The utility model aims to provide an auxiliary fixture for clamping a large workpiece with a narrow surface of a vertical lathe, which can support the narrow surface of the bottom of the workpiece, can not exceed the range of the workpiece, and further can not contact with a turning tool, and has high safety.
In order to achieve the above purpose, the utility model provides an auxiliary fixture for clamping a large workpiece with a narrow surface of a vertical lathe, which comprises a base, wherein one end of the base is provided with a fastening structure, the other end of the base is provided with a supporting structure, and the fastening structure is matched with a locking groove formed in a working platform.
Compared with the prior art, the utility model has the beneficial effects that the lower part of the fastening structure is inserted into the locking groove, the base is positioned on the working platform, after the base moves to the designated position along the locking groove, the base is locked and fixed on the working platform through the fastening structure, the narrow surface at the bottom of the workpiece can be propped against by the supporting structure, the workpiece is clamped and fixed by matching with the clamping mechanism, the narrow surface at the bottom of the workpiece can be supported and cannot exceed the range of the workpiece, and further, the workpiece cannot be contacted with the turning tool, and the safety is high.
As a further improvement of the utility model, the supporting structure comprises a supporting screw rod, the lower end of the supporting screw rod is matched with a supporting screw hole formed in the base, a supporting nut is sleeved on the supporting screw rod in a threaded manner, and the supporting nut is positioned above the base.
Therefore, the supporting screw can be screwed according to the size of the workpiece, so that the height of the supporting screw extending out of the upper portion of the base is adjusted, the height of the bottom of the workpiece away from the working platform is suitable, and then the supporting nut is screwed, so that the supporting screw is locked, and the supporting screw is prevented from moving downwards due to stress during workpiece machining.
As a further improvement of the utility model, the fastening structure comprises a fastening bolt, the lower end of the fastening bolt penetrates through the base and is in threaded connection with a fastening screw hole formed in a fastening block, the fastening block is matched with the locking groove, a fastening nut is sleeved on the fastening bolt in a threaded manner, and the fastening nut is positioned above the base.
The fastening block is inserted into the locking groove and is moved to a designated position along the locking groove, the fastening bolt is screwed to the bottom of the fastening screw hole, and the fastening nut is screwed, so that the base is tightly pressed on the working platform.
As a further improvement of the utility model, the fastening groove is processed into an inverted T-shaped groove, the vertical part of which is matched with the supporting screw and the fastening bolt, and the horizontal part of which is matched with the fastening block.
The horizontal part of the inverted T-shaped groove is attached to the two ends of the fastening block, so that the fastening bolt can be conveniently screwed, and the following rotation problem in the screwing process is avoided.
As a further improvement of the present utility model, the outer periphery of the upper portion of the support screw is processed into a hexagonal structure. Thus, the supporting screw rod is conveniently screwed by a spanner or other tools.
As a further improvement of the utility model, the support screw holes extend through the base.
The height of the supporting screw above the base can be adjusted, so that the supporting screw is better suitable for machining workpieces with different sizes.
Drawings
FIG. 1 is a schematic diagram of the main structure of the present utility model.
Fig. 2 is a schematic structural diagram of the auxiliary tool and the working platform before assembly.
Fig. 3 is a schematic structural diagram of the assembled auxiliary tool and working platform of the utility model.
Fig. 4 is a top view of the utility model without a workpiece.
Fig. 5 is a top view of the present utility model placed into a workpiece.
The clamping device comprises a fastening block 1, a base 2, a fastening nut 3, a fastening bolt 4, a supporting nut 5, a supporting screw 6, a locking groove 7, a working platform 8, a clamping head 9, a clamping mechanism 10 and a workpiece 11.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
The auxiliary fixture for clamping the narrow-face large workpiece of the vertical lathe as shown in fig. 1-5 comprises a base 2, wherein one end of the base 2 is provided with a fastening structure, the other end of the base 2 is provided with a supporting structure, and the fastening structure is matched with a locking groove 7 formed in a working platform 8. The supporting structure comprises a supporting screw rod 6, the lower end of the supporting screw rod 6 is matched with a supporting screw hole formed in the base 2, a supporting nut 5 is sleeved on the supporting screw rod 6 in a threaded manner, and the supporting nut 5 is located above the base 2.
The fastening structure comprises a fastening bolt 4, the lower end of the fastening bolt 4 penetrates through the base 2 and then is in threaded connection with a fastening screw hole formed in the fastening block 1, the fastening block 1 is matched with the locking groove 7, the fastening bolt 4 is further sleeved with a fastening nut 3 in a threaded manner, and the fastening nut 3 is located above the base 2.
The fastening groove is processed into an inverted T-shaped groove, the vertical part of the inverted T-shaped groove is matched with the supporting screw rod 6 and the fastening bolt 4, and the horizontal part of the inverted T-shaped groove is matched with the fastening block 1. The outer periphery of the upper portion of the support screw 6 is processed into a hexagonal structure. The support screw holes penetrate through the base 2.
In the utility model, two auxiliary tools are arranged between every two clamping mechanisms 10, and four auxiliary tools are arranged in total and are symmetrical to each other.
When the screw bolt is used, the fastening bolt 4 is screwed with the fastening nut 3, then the lower end of the fastening bolt 4 is inserted into the base 2 and extends outwards, the fastening bolt is screwed with the fastening screw hole on the fastening block 1, meanwhile, the fastening nut 3 is positioned above the base 2, the supporting screw rod 6 is screwed with the supporting nut 5, the lower end of the supporting screw rod 6 is screwed into the supporting screw hole on the base 2, and the supporting nut 5 is positioned above the base 2.
After the main body of the auxiliary tool is assembled, the fastening block 1 is inserted into the horizontal part of the inverted T-shaped groove, the lower part of the fastening bolt 4 is positioned at the vertical part of the inverted T-shaped groove, and the base 2 is pushed to move to a pre-designated position along the inverted T-shaped groove, wherein the position is estimated by the size of the processed workpiece 11, so that the top of the supporting screw rod 6 can be positioned right below the bottom of the workpiece 11.
The tightening bolt 4 is screwed, and as the two ends of the tightening block 1 are attached to the two sides of the horizontal part of the inverted T-shaped groove, the tightening bolt cannot rotate in the screwing process, after the tightening bolt 4 is screwed to the bottom of the tightening screw hole, the tightening nut 3 is screwed again, so that the tightening nut 3 moves downwards along the tightening bolt 4 until the base 2 is pressed, and the base 2 is pressed and fixed on the working platform 8. The supporting screw 6 is then screwed according to the size of the workpiece 11, the height of the supporting screw 6 is adjusted so that the clamping heads 9 of the remaining clamping mechanisms 10 are matched, and after adjustment, the supporting nut 5 is screwed so that the supporting nut 5 moves down along the supporting screw 6 until it presses the base 2, thereby limiting the position of the supporting screw 6 so that it does not move up and down any more.
The workpiece 11 is conveyed to the position right above the vertical lathe through the aerial lifting, and slowly falls on the supporting screw rod 6, and the position of the base 2 on the working platform 8 and the height of the supporting screw rod 6 can be finely adjusted again due to the fact that the bottom of the workpiece 11 is narrower, so that the top of the supporting screw rod 6 is just in full contact with the bottom surface of the lower end of the workpiece 11, and meanwhile the clamping head 9 just faces the side surface of the workpiece 11 to clamp and fix the workpiece 11 completely, and the workpiece 11 is machined by the turning tool.
After the auxiliary tool is adjusted, the position of the workpiece 11 is not required to be adjusted again as long as the workpiece is processed with the same type and specification, and the workpiece can be continuously used.
The vertical lathe clamping mechanism is convenient to operate and simple in structure, the clamping mechanism 10 of the vertical lathe can assist in supporting and clamping the workpiece 11, the action of a turning tool is not affected, the workpiece 11 is supported stably, machining precision is effectively ensured, and safety is improved.
The present utility model is not limited to the above-described embodiments, and based on the technical solutions of the present disclosure, those skilled in the art may make some substitutions and modifications to some technical features thereof without creative efforts, which are all within the scope of the present utility model.