CN205869445U - Special clearance instrument of oval pilot hole - Google Patents

Abstract

The utility model relates to a special clearance instrument of oval pilot hole, including engraving on gold or silver pole and detachable cleaning block, the front end of engraving on gold or silver the pole is provided with the round bar, the tip of round bar is provided with the axial and arranges the silo, the tip of round bar still is provided with the axial step, the front portion of step is provided with the dovetail, the afterbody of step is provided with the inclined plane, the terminal surface of round bar is provided with many diagonal cutters, cleaning block include with step matched with elastic body, the top of body is provided with the sand grip with dovetail matched with, the bottom of body is provided with the brush layer that the one deck is compriseed the brush silk, the rear side of body is provided with protruding area. This clearance instrument simple structure, convenient operation, the loam core clearance in the oval pilot hole is effectual, and cleaning efficiency is high, guarantees casting quality, implements effectually.

Description

A kind of oval pilot hole dedicated cleaning tool

Technical field

This utility model relates to a kind of cleaning tool, particularly relates to a kind of oval pilot hole dedicated cleaning tool.

Background technology

Casting is to become meet necessarily required liquid and water in casting mold by Metal Melting, cooled solidification, levels process After obtain the technical process that there is the foundry goods of reservation shape, size and performance.Cast blank shapes because being close to, and reaches to exempt from machinery and add The purpose of work or a small amount of processing reduces cost and decreases Production Time to a certain extent.Casting is that modem devices manufactures work One of fundamental technology of industry.Casting technique generally includes:

1. casting mold (making liquid metal become the container of solid-state foundry goods) prepares, and casting mold can be divided into sand mold, gold by material therefor Genotype, ceramic mould, chamotte mould, graphite mould etc., can be divided into disposable type, semi-permanent mould and permanent type by access times, and casting mold prepares Quality be the principal element affecting casting quality；

2. casting fusing and the cast of metal, casting metal (casting alloy) mainly has all kinds of cast iron, cast steel and is cast with Non-ferrous metal and alloy；

3. foundry goods process and inspection, foundry goods process include remove core (loam core) and cast(ing) surface foreign body, excise dead head, The ridges such as relief grinding burr and fash and heat treatment, shaping, antirust treatment and roughing etc..

Casting technique can be divided into three essential parts, i.e. casting metal to prepare, casting mold prepares and foundry goods processes.At foundry goods In science and engineering sequence, the pilot hole of some special counterweights is ellipse (such as the pilot hole receiving section's storage battery series counterweight of my company), and And the area of pilot hole is less, existing chisel is utilized to be difficult to clear up the loam core in pilot hole.

Utility model content

The deficiency that this utility model exists for prior art, it is provided that a kind of oval pilot hole dedicated cleaning tool, Concrete technical scheme is as follows:

A kind of oval pilot hole dedicated cleaning tool, including chisel rod and dismountable cleaning block, the front end of chisel rod is arranged Having round bar, the diameter of round bar is less than the diameter of chisel rod, and the end of round bar is provided with the end face of axial discharge groove, discharge groove and round bar Between be provided with interval；The end of described round bar is additionally provided with axial step, and step is arranged on the offside of discharge groove, before step Portion is provided with dovetail groove, and the afterbody of step is provided with inclined-plane, and the end face of round bar is provided with a plurality of oblique sword；Described cleaning block include with The elastic body that step matches, the top of body is provided with the raised line matched with dovetail groove, between raised line and dovetail groove Coordinating is interference fit, and the bottom of body is arc, and the bottom of body is provided with one layer of hairbrush layer being made up of brush filament, hairbrush layer Fixing with the bottom of body and be connected, the rear side of body is provided with raised strips, and raised strips is fixing with the rear side of body to be connected.

As the improvement of technique scheme, it is integral type structure between described oblique sword and round bar, between round bar and chisel rod For integral type structure, it is integral type structure between described raised line and body.

Oval pilot hole dedicated cleaning tool described in the utility model is optimized design to the structure of existing chisel, profit Coordinate cleaning block with the round bar in chisel rod, can effectively clear up the loam core in oval pilot hole, also improve waste and old chisel Utilization rate；This cleaning tool simple in construction, easy to operate, the loam core cleaning effect in oval pilot hole is good, and cleaning efficiency is high, Guaranteeing casting quality, implementation result is good.

Accompanying drawing explanation

Fig. 1 is oval pilot hole dedicated cleaning tool structural representation described in the utility model；

Fig. 2 is cleaning block described in the utility model and the structural representation of chisel rod during round bar disengaging；

Fig. 3 is A-A view in Fig. 2；

Fig. 4 is cleaning block structural representation described in the utility model.

Detailed description of the invention

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain This utility model, is not used to limit this utility model.

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, Fig. 1 is oval pilot hole dedicated cleaning tool knot described in the utility model Structure schematic diagram, Fig. 2 is cleaning block described in the utility model and the structural representation of chisel rod during round bar disengaging, and Fig. 3 is A-A in Fig. 2 View, Fig. 4 is cleaning block structural representation described in the utility model.Described oval pilot hole dedicated cleaning tool, including carving Bar 10 and dismountable cleaning block 20, the front end of chisel rod 10 is provided with round bar 11, and the diameter of round bar 11 is less than the diameter of chisel rod 10； Chisel rod 10 may utilize waste and old chisel and is processed on lathe, e.g., is processed into by the front section of waste and old chisel on lathe Cylinder, this cylinder is round bar 11；The end of round bar 11 is provided with axial discharge groove 12, the end face of discharge groove 12 and round bar 11 it Between be provided with interval；The end of described round bar 11 is additionally provided with axial step 13, and step 13 is to be entered by the cutting edge on lathe Row machining makes " breach " structure, and the section of " breach " is plane, and during machining, cutting edge is from the end face of round bar 11 Starting, the axial advancement distance to a declared goal along round bar 11 can be processed into step 13；Step 13 is arranged on the right of discharge groove 12 Side, the front portion of step 13 is provided with dovetail groove 15, and the afterbody of step 13 is provided with inclined-plane 16, and the end face of round bar 11 is provided with a plurality of Tiltedly sword 14；Described cleaning block 20 includes the elastic body 21 matched with step 13, and the top of body 21 is provided with and dovetail groove The raised line 22 that 15 match, coordinating between raised line 22 with dovetail groove 15 is interference fit, and the bottom of body 21 is arc, body The bottom of 21 is provided with one layer of hairbrush layer 23 being made up of brush filament, and hairbrush layer 23 is fixing with the bottom of body 21 to be connected, body 21 Rear side be provided with raised strips 24, raised strips 24 is fixing with the rear side of body 21 to be connected.

When clearing up the loam core in oval pilot hole, first cleaning block 20 is separated from round bar 11, the existence of step 13, and The end of round bar 11 is similar to " semicircle " structure so that the end of round bar 11 can be stretched in oval pilot hole easily； Round bar 11 is stretched in oval pilot hole by chisel rod 10 again, rotate chisel rod 10, under the effect of oblique sword 14, oval assembling Loam core in hole is broken, is ground into mud powder, owing to being provided with interval between the end face of discharge groove 12 and round bar 11, and round bar 11 end This structure in portion is easy to rake off mud powder from pilot hole；In scale removal process, the end of round bar 11 need not from pilot hole In be completely pulled out, mud powder can be discharged from pilot hole along discharge groove 12, it is ensured that the seriality of scale removal process.Wherein, carve The effect of bar 10 is easy for carrying；Owing to common chisel rod 10 is relatively thick, insert in the oval pilot hole not entering counterweight, therefore round bar The diameter of 11 is less than the diameter of chisel rod 10, it is simple to clear up the pilot hole of follow-up counterweight.

Pinching raised strips 24, raised line 22 is directed at dovetail groove 15, under the pulling of raised strips 24, cleaning block 20 is along raised line 22 He The axis of orientation that dovetail groove 15 limits marches forward, until cleaning block 20 is combined closely with round bar 11；Again round bar 11 is stretched into ellipse In pilot hole, in oval pilot hole, the mud powder of residual is swept under the cleaning of hairbrush layer 23 completely from oval pilot hole Remove；Owing to body 21 has elasticity, the bottom of body 21 is arc so that cleaning block 20 is suitable for the cleaning of oval pilot hole； Coordinating between raised line 22 with dovetail groove 15 is interference fit so that cleaning block 20 disassembles from round bar 11 and becomes simple, Fast.When utilizing raised strips 24 to be dismantled from round bar 11 by cleaning block 20, inclined-plane 16 makes raised strips 24 be more easy to by finger to pinch, convenient Operation.

For ease of processing and fabricating round bar 11, oblique sword 14, raised line 22, tie for integral type between described oblique sword 14 and round bar 11 Structure, is integral type structure between round bar 11 and chisel rod 10, is integral type structure between described raised line 22 and body 21.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model Protection domain within.

Claims (2)

1. an oval pilot hole dedicated cleaning tool, it is characterised in that: include chisel rod (10) and dismountable cleaning block (20), the front end of chisel rod (10) is provided with round bar (11), and the diameter of round bar (11) is less than the diameter of chisel rod (10), round bar (11) End is provided with axial discharge groove (12), is provided with interval between the end face of discharge groove (12) and round bar (11)；Described round bar (11) end is additionally provided with axial step (13), and step (13) is arranged on the offside of discharge groove (12), the front portion of step (13) Being provided with dovetail groove (15), the afterbody of step (13) is provided with inclined-plane (16), and the end face of round bar (11) is provided with a plurality of oblique sword (14)；Described cleaning block (20) includes the elastic body (21) matched with step (13), the top of body (21) be provided with The raised line (22) that dovetail groove (15) matches, coordinating between raised line (22) with dovetail groove (15) is interference fit, body (21) Bottom be arc, the bottom of body (21) is provided with one layer of hairbrush layer (23) being made up of brush filament, hairbrush layer (23) and body (21) bottom is fixing to be connected, and the rear side of body (21) is provided with raised strips (24), and the rear side of raised strips (24) and body (21) is fixed Connect.

A kind of oval pilot hole dedicated cleaning tool the most according to claim 1, it is characterised in that: described oblique sword (14) And be integral type structure between round bar (11), be integral type structure between round bar (11) and chisel rod (10), described raised line (22) with It is integral type structure between body (21).