CN207564388U - A kind of round spanner - Google Patents

Abstract

A round wrench, the round wrench includes a base (2), a cover plate (1), a fixed half-compass (3), a movable half-compass (4), a screw (5) and a handle (6), and the base (2) includes a threaded hole (21), center hole (22), recessed position (23), threaded hole (24), tether hole (25), slide bar (26), positioning cone (27); cover plate (1) includes screw hole ( 11), center hole (12), limit cone (13); fixed semi-compass (3) includes positioning cone (31), positioning cone hole (32), semicircular cone hole (33); movable semi-compass (4 ) includes a semicircular taper hole (41), a positioning taper hole (42), a sliding groove (43), and a handle hole (44). The tapered shank can also be used if the cutting tool diameter is less than 10mm. The round wrench can indirectly improve the strength of the spindle and improve the machining accuracy of the center hole.

Description

a round wrench

technical field

The utility model belongs to mechanical tools, in particular to a tool for dismantling tapered shank cutters and cutting tools.

Background technique

Among the standard cutting tools and cutting tools used in the machinery industry, the round cutter shafts are divided into straight shank and tapered shank. Taking twist drills as an example, twist drills with a drilling diameter of ≤10mm are usually straight shank drills, and those with a diameter of 10 to 19mm There are two types of twist drills: straight shank and tapered shank. The ones with a diameter greater than or equal to 19mm are tapered shank drills. Straight shank drills are processed with iron three-claw drill chucks. The wrench of the chuck is not good, the force is too light, the drill bit is not easy to lock, it may slip, and the force is too large, the wrench and the iron three-claw drill chuck are easy to be damaged, especially the handle part of the wrench is too thin, easy to bend, or the umbrella The shaped teeth are easy to be damaged after a long time of use. Many mechanical workers use steel objects to press against the umbrella-shaped teeth of the iron three-jaw drill chuck, and lock them by tapping. This method is also easy to damage the umbrella-shaped teeth. Many companies The operating procedures of the company prohibit the use of knocking to lock the iron three-claw drill chuck, but the effect is not good. It is really difficult to use the wrench. Most management personnel can only turn a blind eye and close one eye. The tapered shank also has flaws. In order to remove the tapered shank, the current machine tool mills a straight notch on the main shaft and the bearing sleeve, and then uses a triangle iron to hit the triangle iron with a hammer, and mills a straight notch on the main shaft and the bearing sleeve. The mechanical strength has an adverse effect. Therefore, the twist drill with a drill diameter of ≤10mm does not use a twist drill, that is, the rigidity of the spindle itself is limited. After milling out the straight groove, the rigidity of the spindle is difficult to meet the standard. The concentricity of the hole is an important guarantee for the post-processing quality, and the center drill is mainly straight shank, but the iron three-jaw drill chuck is locked, and the concentricity of the iron three-jaw drill chuck itself cannot be compared with the tapered shank. If it is a drill chuck that has been used for a long time, the concentricity is even worse. Some factories use a special drill chuck for the center drill, which is separate from the drill chuck of the drilling machine. It is a helpless move to ensure the concentricity of the center hole. The bearing sleeve is Refers to the cylindrical part on which the main shaft bearing is installed on the outside of the main shaft.

Utility model content

The origin of the technical problem is that in straight shank tools and cutting tools, the wrench handle of the iron three-claw drill chuck used is very thin and easy to bend, and the tool and cutting tool are locked by tapping the umbrella-shaped teeth of the iron three-claw drill chuck , easy to damage the iron three-claw drill chuck, the iron three-claw drill chuck has limited holding force, and the lock is not firm, it is easy to cause the knives and cutting tools to slip, and the slipping can easily damage the tool, cutting tool and iron three-claw drill chuck, use a tapered handle For knives and cutting tools, it is necessary to mill straight grooves on the main shaft and bearing sleeves. Milling straight grooves has an adverse effect on the mechanical strength of the main shaft and bearing sleeves. Moreover, it is difficult to use tapered shanks for tools and cutting tools with a diameter of less than 10mm. The concentricity of the claw drill chuck is difficult to reach the concentricity of the tapered shank drill bit, which has an adverse effect on precision machining when drilling the center hole.

Technical solution: a round wrench, the round wrench includes a base 2, a cover plate 1, a fixed half-compass 3, and a movable half-compass 4, which is characterized by:

The base 2 includes a threaded hole A 21, a central hole A 22, a recessed position 23, a threaded hole B 24, a tether hole B 25, a sliding bar 26, and a positioning cone B 27;

The cover plate 1 includes a screw hole 11, a central hole B 12, and a positioning cone C 13;

The fixed semi-compass 3 includes a positioning cone A 31, a positioning cone hole A 32, and a semicircular cone hole A 33;

Described movable semicircle compasses 4 comprises semicircular taper hole B 41, positioning taper hole B 42, slide groove 43, handle hole 44,

The threaded hole A 21 is distributed on the base 2 in a circular array, and its thread matches the thread of the screw rod 5. The circular array refers to the equiangular distribution of the threaded holes on the array circle, and the array circle refers to the outer circle of the base 2;

The central hole A 22 is the central circular hole of the base 2, the central hole is a through hole, and the diameter of the central hole is 1-20 mm larger than the maximum diameter of the disassembled largest cutter or cutting tool;

The recessed position is used to place the fixed semi-compass 3 and the movable semi-compass 4, the depth of the recessed position=the thickness of the fixed semi-compass 3 or the movable semi-compass 4, and the diameter of the recessed position is greater than that of the movable semi-compass 4 or the fixed semi-compass 3 Diameter 1~20mm;

Its thread of described threaded hole B 24 matches the thread of handle 6;

The second tether hole 25 is a through hole, and the second tether hole 25 is used to penetrate the steel wire rope;

The height of the sliding bar 26=the depth of the sliding groove 43, the width of the sliding bar 26=the width of the sliding groove 43, the sliding bar 26 cooperates with the sliding groove 43 to control the running track of the movable semi-compass 4 advancing or retreating;

Its taper of described positioning cone B 27=the taper of positioning cone hole A 32, the positioning cone B 27 cooperates with the positioning cone hole A 32 to prevent the movement of the fixed semicircle, the positioning cone B 27 and the positioning cone hole A 32 quantity and position are Correspondingly, the number of positioning cones B 27 is 2 or more;

The number and position of the screw hole 11 correspond to the threaded hole A 21, the screw hole 11 is a through hole, the screw 5 passes through the screw hole 11, and then screwed into the threaded hole A 21 to lock the cover plate 1 and the base 2 ;

The central hole B 12 is the central circular hole of the cover plate 1, the central hole is a through hole, and the diameter of the central hole is 1-20mm larger than the maximum diameter of the disassembled largest cutter or cutting tool;

The positioning cone C is a protruding cone on the cover plate 1, the taper of the positioning cone C 13=the taper of the positioning cone hole C, the positioning cone C 13 cooperates with the positioning cone hole C to prevent the movement of the fixed semi-compass, and the positioning cone C 13 Corresponding to the number and position of the positioning cone hole C, the positioning cone hole C described here is located at the back of the plane where the positioning cone hole A 32 is located;

Described positioning cone armor 31 is the protruding cone on its A face of fixed half-compass 3;

The positioning taper hole A 32 is a conical recessed hole on the fixed semi-compass 3;

Described semicircular taper hole armor 33 is Morse taper hole, and its taper is identical with the taper of cutter or cutting tool;

Described semicircle taper hole B 41 is Morse taper hole, and its taper is identical with the taper of cutter or cutting tool, and semicircle taper hole B 41 and semicircle taper hole A 33 constitute a complete taper hole, and fixing half The thickness of the compass 3 and the movable semi-compass 4 is the same, and the thickness is between 5mm and 30mm;

Described positioning taper hole second 42 is the conical recessed hole on its B face of movable half-compass 4, and the taper of positioning taper hole second 42=the taper of positioning cone first 31;

The sliding groove 43 is a straight groove, and the sliding groove 43 and the A surface or the B surface form 90 degrees;

The handle hole 44 is a straight hole, the handle hole 44 is a blind hole, the diameter of the handle hole 44 is 1-3mm larger than the diameter of the front end of the handle 6, and the front end of the handle 6 is cylindrical and has chamfers or rounded corners.

Beneficial effect: the machine tool that uses a round wrench to disassemble the tool or cutting tool does not need to mill straight grooves on the main shaft and bearing sleeve, which improves the rigidity of the main shaft. For the tool or cutting tool with a diameter of shank ≤ 10mm, a tapered shank can also be used to avoid locking The slipping phenomenon that occurs when cutting tools or cutting tools can improve the concentricity of the center hole during finishing.

Description of drawings

Fig. 1 is a structural schematic diagram of a round wrench;

Accompanying drawing 2 is the fixed semicircular structure schematic diagram;

Accompanying drawing 3 is the structural representation of movable half compass;

Accompanying drawing 4 is a schematic diagram of a movable semi-compass structure;

Accompanying drawing 5 is a schematic diagram of the base structure;

Accompanying drawing 6 is the structural representation of cover plate;

Accompanying drawing 7 is a schematic diagram of the triangle iron structure.

In the figure, 1 is the cover plate, 2 is the base, 3 is the fixed semi-compass, 4 is the movable semi-compass, 5 is the screw rod, 6 is the handle, 7 is the tether hole armor, 31 is the positioning cone armor, 32 is the positioning cone hole A, 33 is a semicircular taper hole A, 41 is a semicircular taper hole B, 42 is a positioning taper hole B, 43 is a sliding groove, 44 is a handle hole, 21 is a threaded hole A, 22 is a center hole A, 23 24 is threaded hole B, 25 is tether hole B, 26 is sliding bar, 27 is positioning cone B, 11 is screw hole, 12 is center hole B, 13 is positioning cone C, A is fixed semi-compass B is the contact surface of the upper and movable semi-compass, and B is the contact surface of the movable semi-compass and the fixed semi-compass.

Detailed ways

The applicant explains the structure and principle of the application with reference to the accompanying drawings,

To realize this application, the tapered shank of the tool or cutting tool needs to reserve the operating space of the round wrench, that is, the tapered shank of the tool or cutting tool needs to leave a length of 5 to 30 mm outside the taper hole of the main shaft. The current machine tool spindle taper hole has Reserved, the round wrench is therefore also compatible with current machine tools,

The round wrench consists of a cover plate 1, a base 2, a movable half-compass 4, a fixed half-compass 3, a screw 5, and a handle 6. Put the movable half-compass 4 and the fixed half-compass 3 into the recessed position 23, and use the cover plate 1 to cover tightly. Use the screw 5 to lock the cover plate 1 and the base 2. By tightening the handle 6, the round wrench is locked on the taper handle of the tool or cutting tool, and the handle of the machine tool is pulled to move the spindle upward, and the round wrench is pressed against the bed. After that, pull the handle of the machine tool forcefully, and the round wrench and the machine bed will generate force to remove the tool or cutting tool from the taper hole of the machine tool spindle. This is the working principle and process of removing the tool or cutting tool with the round wrench. At the highest point, the round wrench cannot be in contact with the bed, and it only needs to be padded with an iron block. Therefore, the round wrench cover plate 1 is made of magnetic steel, which is convenient for attracting the iron block.

The base 2 includes threaded hole A 21, central hole A 22, recessed position 23, threaded hole B 24, tether hole B 25, slide bar 26, and positioning cone B 27;

The threaded hole A 21 is distributed on the base 2 in a circular array, and its thread matches the thread of the screw rod 5. The circular array refers to the equiangular distribution of the threaded holes on the array circle, and the array circle refers to the outer circle of the base 2;

The central hole A 22 is the central circular hole of the base 2, the central hole is a through hole, and the aperture of the central hole is 1-20mm larger than the maximum diameter of the dismantled largest cutter or cutting tool. 36mm, then the diameter of the center hole armor 22 is 37mm~56mm;

The recessed position is used to place the fixed semi-compass 3 and the movable semi-compass 4, the depth of the recessed position = the thickness of the fixed semi-compass 3 or the movable semi-compass 4, the diameter of the recessed position is larger than the diameter of the movable semi-compass 4 or the fixed semi-compass 31~ 10mm;

Its screw thread of threaded hole B 24 matches the thread of handle 6, and handle 5 is screwed into threaded hole B 24, and the movement of movable half-compass 4 is controlled by twisting handle 6, thereby unclamping or clamping the taper handle of cutter or cutting tool;

The tether hole B 25 is a through hole, and the tether hole B 25 is used to pass through the steel wire rope. There is a tether hole A 7 on the triangle, and the round wrench and the triangle are connected together through the tether hole B 25 and the tether hole A 7. In this way, when the taper handle is taken out from the taper sleeve, the triangle iron is used to connect the two together, which is convenient to use;

The height of the sliding bar 26=the depth of the sliding groove 43, the width of the sliding bar 26=the width of the sliding groove 43, the sliding bar 26 cooperates with the sliding groove 43 to control the running track of the movable semi-compass 4 advancing or retreating;

The taper of the positioning cone B 27=the taper of the positioning cone hole A 32, the positioning cone B 27 cooperates with the positioning cone hole A 32 to prevent the movement of the fixed semicircle, the positioning cone B 27 and the positioning cone hole A 32 are corresponding in quantity and position, The number of positioning cones B 27 is 2 or more.

The cover plate 1 includes a screw hole 11, a central hole B 12, and a positioning cone C 13;

The number and position of the screw hole 11 correspond to the threaded hole A 21, the screw 5 passes through the screw hole 11, and then screwed into the threaded hole A 21, and the cover plate 1 and the base 2 are locked;

The central hole B 12 is the central round hole of the cover plate 1, the central hole is a through hole, and the diameter of the central hole is 1~20mm larger than the maximum diameter of the disassembled largest tool or cutting tool. For example, the largest tool or cutting tool disassembled by a round wrench is The diameter is 36mm, then the diameter of the center hole B12 is 37mm~56mm;

The positioning cone C 13 is a protruding cone on the cover plate 1, the taper of the positioning cone C 13=the taper of the positioning cone hole C, the positioning cone C 13 cooperates with the positioning cone hole C to prevent the fixed semi-compass from moving, and the positioning cone C 13 and the number and position of the positioning cone hole C are corresponding, the positioning cone hole C described here is located on the back of the plane where the positioning cone hole A 32 is located, and the positioning cone hole C described here is not shown in the accompanying drawings.

The fixed semi-compass 3 includes a positioning cone A 31, a positioning cone A 32, and a semicircular cone A 33;

Positioning conical armor 31 is the protruding cone on its A face of fixed half-compass 3;

Positioning taper hole armor 32 is the recessed hole of conical on the fixing half compass 3;

Semicircle taper hole armor 33 is Morse taper hole, and its taper is identical with the taper of cutter or cutting tool.

Movable semi-compass 4 comprises semicircular taper hole B 41, positioning taper hole B 42, slide groove 43, handle hole 44,

The semicircular taper hole B 41 is a Morse taper hole, and its taper is the same as the taper of the cutter or cutting tool. The semicircular taper hole B 41 and the semicircular taper hole A 33 form a complete taper hole, and the fixed semicircle gauge 3 and Movable semicircular compasses 4 have the same thickness, and the thickness is between 5mm and 30mm;

Positioning taper hole second 42 is the recessed hole of the conical shape on its B face of movable half-compass 4, and the taper of positioning taper hole second 42=the taper of positioning cone first 31;

The sliding groove 43 is a straight groove, and the sliding groove 43 and the A surface or the B surface form 90 degrees;

The handle hole 44 is a straight hole, and the handle hole 44 is a blind hole. The handle hole 44 aperture=handle 6 front end diameter, and the handle 6 front end is cylindrical.

It should be noted that in the process of processing, it is very difficult to adopt the integrated structure of positioning cone C 13 and positioning cone B 27 with the base 2 or cover plate 1. Usually, they are drilled on the cover plate 1 or base 2. hole, and then turn the front end of the positioning column into a conical shape, and press it into the drilled hole. When processing the fixed semi-compass 3 and the movable semi-compass 4, the simpler method is to process a compass block first, and then process the Mohs Taper hole, the compass block is sawed into two pieces, but for such a product, the taper hole is not a complete taper hole. However, for the round wrench, the sawing loss has little effect on the product performance, or the saw After cutting, the Morse taper hole is processed. The round wrench is designed with a cover plate 1. On the one hand, it prevents the loss of the fixed semi-compass 3 and the movable semi-compass 4. On the other hand, some machine tool beds have uneven spindle outlets, so no cover plate is designed. It is difficult to directly use the fixed semicircular gauge 3 and the movable semicircular gauge 4 to press against the bed. For the case where the spindle exit of the machine bed is flat, or the spindle exit is processed flat during machine tool processing, the cover plate 1 is actually not needed , when it is necessary to change the fixed semicompass 3 and the movable semicompass 4 of different specifications, it is more convenient. Therefore, the base is made of magnetic steel material, which can attract the fixed semicompass 3 and the movable semicompass 4, and prevent the fixed semicompass 3 and the movable semicompass 4 lost.

Claims (5)

1. a kind of round spanner, circle spanner includes pedestal（2）, cover board（1）, fixed half-round compasses（3）, movable half-round compasses（4）, feature It is：

The pedestal（2）Include threaded hole first（21）, centre bore first（22）, recessed position（23）, threaded hole second（24）, rope fastening hole Second（25）, slider bar（26）, positioning cone second（27）；

The cover board（1）Include screw hole（11）, centre bore second（12）, positioning cone third（13）；

The fixation half-round compasses（3）Include positioning cone first（31）, positioning taper hole first（32）, semicircle taper hole first（33）；

The movable half-round compasses（4）Include semicircle taper hole second（41）, positioning taper hole second（42）, sliding groove（43）, handle hole （44）.

2. according to round spanner described in claim 1, it is characterized in that：

The threaded hole first（21）Pedestal is distributed in into circumference array（2）On, screw thread and screw rod（5）Screw thread matching, circle All arrays refer to threaded hole first（21）Justify spaced at equal angles around in array, array circle refers to pedestal（2）Outer circle；

The centre bore first（22）It is pedestal（2）Center hole, centre bore first（22）It is through-hole, centre bore first（22）Hole Diameter is more than the maximum cutter of dismounting or 1 ~ 20mm of maximum diameter of cutlery；

The recessed position（23）For placing fixed half-round compasses（3）, movable half-round compasses（4）, depth=fixation semicircle of recessed position Rule（3）Or movable half-round compasses（4）Thickness, the diameter for being recessed position is more than movable half-round compasses（4）Or fixed half-round compasses（3）'s 1 ~ 20mm of diameter；

The threaded hole second（24）Its screw thread and handle（6）Screw thread matching；

The rope fastening hole second（25）It is through-hole, rope fastening hole second（25）For piercing into steel wire rope；

The slider bar（26）Highly=sliding groove（43）Depth, slider bar（26）Width=sliding groove（43）Width, it is sliding Dynamic item（26）And sliding groove（43）Cooperation, control activity half-round compasses（4）The operating path of forward or backward；

The positioning cone second（27）Its taper=positioning taper hole first（32）Taper, positioning cone second（27）With positioning taper hole First（32）Cooperation prevents fixed half-round compasses（3）It is mobile, positioning cone second（27）With positioning taper hole first（32）Quantity and position are pair It answers, positioning cone second（27）Quantity is 2 and 2 or more.

3. according to round spanner described in claim 1, it is characterized in that：

The screw hole（11）Its hole number, position and threaded hole first（21）It is corresponding, screw hole（11）It is through-hole, screw rod（5） Across screw hole（11）, then it is screwed into threaded hole first（21）, by cover board（1）And pedestal（2）Locking；

The centre bore second（12）It is cover board（1）Center hole, centre bore second（12）It is through-hole, centre bore second（12）Hole Diameter is more than the maximum cutter of dismounting or 1 ~ 20mm of maximum diameter of cutlery；

The positioning cone third（13）It is cover board（1）The circular cone of upper protrusion, positioning cone third（13）Its taper=positioning taper hole third Taper, positioning cone third（13）Coordinate with positioning taper hole third, prevent fixed half-round compasses（3）It is mobile, positioning cone third（13）With Positioning the third quantity of taper hole and position are that corresponding, described herein positioning taper hole third is located at positioning taper hole first（32）Place plane The back side.

4. according to round spanner described in claim 1, it is characterized in that：

The positioning cone first（31）It is fixed half-round compasses（3）The circular cone of protrusion on its A face, A faces refer to fixed half-round compasses （3）Upper and movable half-round compasses（4）Contact surface；

The positioning taper hole first（32）It is fixed half-round compasses（3）The recess holes of upper cone；

The semicircle taper hole first（33）Be mohs tapered bore, taper and cutter or cutlery taper it is identical.

5. according to round spanner described in claim 1, it is characterized in that：

The semicircle taper hole second（41）Be mohs tapered bore, taper and cutter or cutlery taper it is identical, semicircle taper hole Second（41）With semicircle taper hole first（33）Form a complete taper hole, fixed half-round compasses（3）With movable half-round compasses（4）Thickness phase Together, thickness is between 5mm ~ 30mm；

The positioning taper hole second（42）It is movable half-round compasses（4）The recess holes of cone on its B face, position taper hole second（42） Taper=positioning cone first（31）Taper, B refers to movable half-round compasses（4）Upper and fixed half-round compasses（3）Contact surface；

The sliding groove（43）It is straight trough, sliding groove（43）With A faces or B faces into 90 degree；

The handle hole（44）It is straight hole, handle hole（44）It is blind hole, 44 aperture of handle hole is more than handle（6）Point diameter 1 ~ 3mm, handle（6）Front end is cylindric and have chamfering or a fillet.