CN217290570U

CN217290570U - Industrial plastic hexagonal handle drill

Info

Publication number: CN217290570U
Application number: CN202220779732.5U
Authority: CN
Inventors: 吴宏; 何建国
Original assignee: Rugao Qianjun Tools Co ltd
Current assignee: Rugao Qianjun Tools Co ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-08-26
Anticipated expiration: 2032-04-06

Abstract

The utility model relates to an industrial plastic hexagonal handle drill, which comprises a tool bit, wherein the tool bit comprises a connecting part and a cutting part, the connecting part comprises a limiting section and an anti-skid section, an annular groove is arranged on the outer wall of the circumference of the limiting section, and the anti-skid section is cuboid; a polyformaldehyde drill stem, including stalk portion and cup joint portion, it has the gomphosis chamber to open at the top of cup joint portion, the gomphosis chamber includes first gomphosis chamber, second gomphosis chamber, and annular bulge on the inner wall in first gomphosis chamber. The invention has the advantages that: adopt the cooperation in antiskid section and second gomphosis chamber to avoid the phenomenon that the tool bit skidded to appear, adopt annular groove on the spacing section and the protruding cooperation of annular on the first gomphosis chamber to come to carry on spacingly to the relative position of tool bit and drillstock again, avoid the tool bit to drop from the drillstock, need not to adopt interference fit's mode and can realize the stable connection between tool bit and the drillstock, also need not to adopt external parts such as rivet to realize connecting, fine has avoided skidding, the appearance of the scheduling problem that drops.

Description

Industrial plastic hexagonal handle drill

Technical Field

The utility model relates to a fluted drill, in particular to hexagonal handle bores is moulded to industry.

Background

The hexagonal handle drill bit comprises a hexagonal connecting handle and a drill bit, a mounting hole is formed in the hexagonal connecting handle, and one end of the drill bit is inserted into the mounting hole and connected with the hexagonal connecting handle. In order to avoid the drill bit from falling off from the hexagonal connecting handle, the hexagonal connecting handle and the drill bit are connected and fixed in a bonding mode or a mode that a rivet is riveted and matched with glue for bonding after the drill bit is inserted into the hexagonal connecting handle in the traditional technology, and the rod part of the hexagonal handle drill bit is smooth and cylindrical, so that slipping and blocking are easily caused, and the working efficiency is influenced.

Therefore, in order to solve the above-mentioned phenomenon, in patent CN214236423U, a hexagonal shank drill structure is proposed, which comprises a hexagonal drill shank and a tool bit, wherein the tool bit comprises an integrally formed connecting portion and a cutting portion, the connecting portion comprises an embedded portion and a clamping portion, the diameter of the embedded portion is smaller than that of the clamping portion, one side of the embedded portion and one side of the clamping portion are flush with each other and are located on the same horizontal plane, so that a supporting surface is formed at the joint of the embedded portion and the clamping portion, an inner hole matched with the connecting portion is formed in the drill shank, the connecting portion is inserted into the drill shank, a step surface abutting against the supporting surface is arranged in the inner hole, the hexagonal shank drill structure is simple, the embedded portion and the clamping portion are arranged at the connecting portion of the tool bit and are connected into the drill shank in an interference fit manner, so that slipping or falling of a drill bit does not occur, and it is ensured that the tool bit is stably and reliably connected with the hexagonal shank, the service life of the hexagonal handle drill bit can be effectively prolonged, and the hexagonal handle drill bit does not need to be additionally riveted.

When the hexagonal handle drill is connected, the tool bit is prevented from slipping or falling off in an interference fit mode for the connection between the tool bit and the drill handle, in this way, the drawback still exists, that the connection between the cutting head and the drill shank is still of cylindrical configuration, although fixed by interference fit, the drill bit is rotated at high speed to drill holes due to the working requirement of the drill bit, i.e., the forces in the radial direction are relatively large, while, in the case of a cylindrical construction, even with an interference fit, the phenomenon of looseness still can lead to appearing in the junction of tool bit and drillstock under long-term use, and especially when the electric drill moment of torsion is too big, the power that applies to the drill bit is just also bigger, and the phenomenon of looseness appears more easily, leads to appearing skidding or even the phenomenon of droing between tool bit and the drillstock, influences the smooth use of drill bit, and the life-span of drill bit is not high.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a hexagonal handle bores is moulded to worker who avoids the tool bit to appear skidding or obscission.

In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides a hexagonal handle bores is moulded to worker, its innovation point lies in: comprises that

The cutting tool comprises a tool bit and a cutting part, wherein the tool bit comprises a connecting part and a cutting part which are integrally formed, the connecting part comprises a limiting section and an anti-skid section, the limiting section is connected with the cutting part, the limiting section is cylindrical, an annular groove is formed in the outer wall of the circumference of the limiting section, the anti-skid section is rectangular, and the size of the anti-skid section is smaller than that of the limiting section;

a polyformaldehyde drill handle, the polyformaldehyde drill handle includes stalk portion and cup joints portion, opens the gomphosis chamber that holds the embedding of connecting portion on the top of cup jointing portion, the gomphosis chamber includes first gomphosis chamber, the second gomphosis chamber with spacing section, antiskid section one-to-one, and wherein, first gomphosis chamber is cylindricly, still is provided with on the inner wall in first gomphosis chamber with arc recess matched with annular protruding, second gomphosis chamber is the cuboid form.

Furthermore, the section of the annular groove is arc-shaped, and the section of the corresponding annular bulge is also arc-shaped.

Further, still be provided with between spacing section and the first gomphosis chamber and strengthen the subassembly, strengthen the subassembly and be: install at least one and strengthen the lock pearl in spacing section, open the mounting groove that has the appearance to strengthen the lock pearl installation simultaneously in spacing section, install a reset spring in the mounting groove, this reset spring with strengthen the lock pearl and link to each other, strengthen one side of lock pearl and stretch out outside the mounting groove, still open on the inner wall in first gomphosis chamber and hold the arc form fixed slot of strengthening the lock pearl and stretching out one section embedding outside the mounting groove.

The utility model has the advantages of: the utility model discloses in, structure through the junction to tool bit and drillstock improves, adopt the cooperation in antiskid section and second gomphosis chamber to avoid the phenomenon that the tool bit skidded to appear, the annular groove on the spacing section of adoption again comes to carry on spacingly with the relative position of drillstock with the annular bulge's on the first gomphosis chamber the tool bit, avoid the tool bit to drop from the drillstock, the improved structure need not to adopt interference fit's mode can realize the stable connection between tool bit and the drillstock, also need not to adopt outer parts such as rivet to realize connecting, overall connection structure is stable, fine has avoided skidding, the appearance of the scheduling problem that drops.

And adopt the design of polyformaldehyde drill handle, utilize polyformaldehyde to be rich in the advantage of elasticity, make things convenient for the embedding of tool bit connecting portion, avoid leading to the unable smooth embedding of tool bit connecting portion because of annular bellied existence, made things convenient for the installation, moreover for the metal drill handle, adopt the polyformaldehyde drill handle to become by original metal cutting processing when adding man-hour and mould plastics, production efficiency, manufacturing accuracy homoenergetic improve, can also make multiple colour, more pleasing to the eye.

The cross sections of the annular groove and the annular bulge are designed into arc shapes, so that the installation and the disassembly are convenient, and the phenomenon that the tool bit and the drill handle are mutually abraded due to the existence of edges and corners during embedding is avoided.

Strengthen the design of subassembly, mutually support through parts such as strengthening lock pearl, reset spring, fixed slot and play the effect of strengthening to being connected between tool bit and the drillstock, firstly can play firm effect to the tool bit axial, avoid the tool bit to fall out from drillstock etc. two also can play firm effect to the tool bit footpath, avoid appearing relative rotation between tool bit and the drillstock to prevent skidding, prevent to fall to the tool bit and all play the effect of strengthening.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic view of the plastic hexagonal handle drill of the utility model.

Fig. 2 is a schematic view of the connection portion of the present invention.

Fig. 3 is a schematic view of the middle sleeved portion of the present invention.

Detailed Description

The following examples are presented to enable those skilled in the art to more fully understand the present invention and are not intended to limit the scope of the present invention.

The plastic hexagonal handle drill as shown in figures 1-3 comprises

A tool bit, the tool bit includes integrated into one piece's connecting portion 2 and cutting portion 1, and connecting portion 2 includes spacing section 21, antiskid section 22, and wherein, spacing section 21 links to each other with cutting portion 1, and spacing section 21 is the cylinder form, and it has an annular groove 23 to open on spacing section 21's circumference outer wall, and antiskid section 22 is the cuboid form, and antiskid section 22's size is less than spacing section 21's size.

A polyformaldehyde drill stem, polyformaldehyde drill stem include stalk portion 4 and cup joint portion 3, open the gomphosis chamber that has the embedding of connecting portion at the top of cup joint portion 3, the gomphosis chamber includes first gomphosis chamber 31, the second gomphosis chamber 32 with spacing section 21, anti-skidding section 22 looks one-to-one, and wherein, first gomphosis chamber 31 is cylindricly, still is provided with on the inner wall in first gomphosis chamber 31 with arc recess 23 matched with annular protruding 33, second gomphosis chamber 32 is the cuboid form.

The section of the annular groove 23 is arc-shaped, and the section of the corresponding annular protrusion 33 is also arc-shaped. The cross sections of the annular groove 23 and the annular protrusion 33 are designed to be arc-shaped, so that the installation and the disassembly are convenient, and the mutual abrasion between the tool bit and the drill shank caused by the existence of edges and corners during the embedding is avoided.

Still be provided with between spacing section 21 and first gomphosis chamber 31 and strengthen the subassembly, strengthen the subassembly and be: install a pair of enhancement lock pearl 24 on spacing section 21, it has the mounting groove of holding the installation of enhancement lock pearl 24 to open simultaneously on spacing section 21, install a reset spring 25 in the mounting groove, one side of this reset spring 25 is fixed mutually with the inner wall of mounting groove, reset spring 25's opposite side links to each other with enhancement lock pearl 24, outside one side of strengthening lock pearl 24 stretches out the mounting groove, it has the arc form fixed slot 34 of holding one section embedding that the enhancement lock pearl 24 stretches out the mounting groove outside still to open on the inner wall in first gomphosis chamber 31. Strengthen the design of subassembly, through strengthening locking pearl 24, reset spring 25, mutually supporting of parts such as fixed slot 34 plays the effect of strengthening being connected between tool bit and the drill shank, firstly can play firm effect to the tool bit axial, avoid the tool bit to fall out from the drill shank etc. two also can play firm effect to the tool bit footpath, avoid appearing relative rotation between tool bit and the drill shank, thereby to the tool bit prevent skidding, prevent that the dropping all plays the effect of strengthening.

The utility model discloses in, structure through the junction to tool bit and drillstock improves, the phenomenon of skidding appears in the cooperation that adopts non-slip section and second gomphosis chamber to avoid the tool bit, the annular groove on the spacing section of adoption again comes to carry on spacingly with the relative position of drillstock with the bellied cooperation of annular on the first gomphosis chamber, avoid the tool bit to drop from the drillstock, the stable connection between tool bit and the drillstock can be realized to the improved structure need not to adopt interference fit's mode, also need not to adopt external parts such as rivet to realize connecting, overall connection stable in structure, fine having avoided skidding, the appearance of the scheduling problem that drops.

The design of the polyformaldehyde drill handle is adopted, the advantage that polyformaldehyde is rich in elasticity is utilized, the embedding of the tool bit connecting part is facilitated, the problem that the tool bit connecting part cannot be smoothly embedded due to the existence of the annular protrusion is avoided, the installation is facilitated, and in addition, compared with a metal drill handle, polyformaldehyde is engineering plastic, the drill handle is manufactured by adopting the material, metal materials can be saved, in addition, the original metal cutting processing of the polyformaldehyde drill handle during processing is changed into injection molding, the production efficiency and the manufacturing precision can be improved, various colors can be manufactured, and the appearance is more attractive.

Polyoxymethylene (POM) is an engineering plastic with excellent performance, and is called steel-robbing and ultra-steel abroad. POM has hardness, strength and rigidity similar to metals, has good self-lubricity, good fatigue resistance, and high elasticity over a wide range of temperatures and humidity, and also has good chemical resistance. Since POM is replacing many components traditionally occupied by metals at a lower cost than many other engineering plastics, such as zinc, brass, aluminum and steel, POM has been widely used in the fields of electronics, electrical, machinery, instruments, light daily use, automobiles, building materials, agriculture, and the like. POM also shows a good growth profile in many new fields of application, such as medical technology, sports equipment, etc.

It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a hexagonal handle bores is moulded to worker which characterized in that: comprises that

The cutting head comprises a connecting part and a cutting part which are integrally formed, the connecting part comprises a limiting section and an anti-skid section, the limiting section is connected with the cutting part, the limiting section is cylindrical, an annular groove is formed in the outer wall of the circumference of the limiting section, the anti-skid section is rectangular, and the size of the anti-skid section is smaller than that of the limiting section;

2. The industrial plastic hexagonal handle drill according to claim 1, characterized in that: the section of the annular groove is arc-shaped, and the section of the corresponding annular bulge is also arc-shaped.

3. The industrial plastic hexagonal handle drill according to claim 1, characterized in that: still be provided with between spacing section and the first gomphosis chamber and strengthen the subassembly, strengthen the subassembly and be: install at least one and strengthen the lock pearl in spacing section, open the mounting groove that has the appearance to strengthen the lock pearl installation simultaneously in spacing section, install a reset spring in the mounting groove, this reset spring with strengthen the lock pearl and link to each other, strengthen one side of lock pearl and stretch out outside the mounting groove, still open on the inner wall in first gomphosis chamber and hold the arc form fixed slot of strengthening the lock pearl and stretching out one section embedding outside the mounting groove.