CN210172672U - Shaft opposite side double-sided groove broaching tool - Google Patents

Abstract

The utility model provides an axle opposite side double faced groove broaching frock, including base and locating pin, the both ends of base are equipped with the mounting hole, the middle part of base is equipped with the ladder shaft hole along the horizontal direction, the ladder shaft hole is the through-hole, the bottom in ladder shaft hole is equipped with the guide way that supplies the cutter to pass, the bolt hole has been seted up at the top of base, manual indexing mechanism passes through the bolt hole is installed on the top of base, the top of base still seted up with locating pin matched with positioning hole. The structure is simple, the operation is easy, and the symmetry of the double grooves of the shaft processing is high.

Description

Shaft opposite side double-sided groove broaching tool

Technical Field

The utility model relates to the technical field of machining, especially, relate to an axle opposite side double faced groove broaching frock.

Background

Broaching is a machining method for cutting by a cutter, and a traditional broaching tool is mainly characterized in that a through groove for the cutter to slide is arranged in the tool, so that a workpiece arranged on the tool forms a groove on one side of the workpiece under the broaching of the cutter. However, in the conventional double-groove broaching of the spindle, the following problems often occur: the through groove for the cutter to pass through on the traditional tool generally has only a guiding function, the cutter cannot be accurately positioned when broaching in the through groove, and the accurate symmetry degree is difficult to achieve, so that the problems that the bottom of the broached groove is not parallel to the central line of the hole, or the double grooves are asymmetric and the like are caused, and the product is unqualified; in the broaching machining process in the through groove of the tool, friction can be generated between a workpiece and the tool, between a cutter and the tool, and the workpiece is seriously abraded after being used for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an axle opposite side double faced groove broaching frock, this simple structure, easy operation, the symmetry of the double flute of axle processing is high, simultaneously, reduces the degree of wear of frock.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is:

the utility model provides an axle opposite side double faced groove broaching frock, includes base and locating pin, the both ends of base are equipped with the mounting hole, the middle part of base is equipped with the ladder shaft hole along the horizontal direction, the ladder shaft hole is the through-hole, the bottom in ladder shaft hole is equipped with the guide way that supplies the cutter to pass, the bolt hole has been seted up at the top of base, manual indexing mechanism passes through the bolt hole is installed on the top of base, the top of base still seted up with locating pin matched with positioning hole.

The structure is simple, the operation is easy, and the symmetry of the double grooves of the shaft processing is high.

Preferably, the outer edge of the guide groove is provided with a plurality of cutter adjusting sheets, the cutter adjusting sheets are provided with U-shaped holes, and bolts penetrate through the U-shaped holes to fix the cutter adjusting sheets. The U-shaped hole structure is adopted, so that the position of a cutter adjusting sheet can be conveniently adjusted, the coaxiality of the cutter and a workpiece matching sleeve is ensured, and the machining error is controlled within 0.02 mm.

Preferably, a workpiece matching sleeve is sleeved on the inner wall of the large-aperture end of the stepped shaft hole, and an open slot for a cutter to pass through, a first slot hole for a positioning pin to pass through and a second slot hole for mounting the manual indexing mechanism are formed in the workpiece matching sleeve. The workpiece matching sleeve reduces the direct abrasion of the workpiece to the tool, and prolongs the service life of the tool.

Preferably, a positioning pin matching sleeve is arranged in the positioning hole. The positioning pin matching sleeve reduces direct abrasion of the positioning pin to the tool, and the service life of the tool is prolonged.

Preferably, the manual indexing mechanism comprises a bolt, the bolt sequentially penetrates through the bolt hole and the second slotted hole, a spring is further sleeved on the bolt, and the upper end of the bolt is sequentially in threaded connection with a spring pressing block and a handle.

And rotating the handle to enable the spring pressing block to move downwards, and further enabling the shaft to be machined to be further fixed in the tool.

Preferably, still include screw rod and taper sleeve, the screw rod runs through along the axial ladder shaft hole, the cover is equipped with on the screw rod the taper sleeve, just the external diameter of taper sleeve with the aperture end interference fit in ladder shaft hole.

The taper sleeve is in interference fit with the small-bore end of the stepped shaft hole, and the taper sleeve is abutted against the rear end of the shaft to be machined on the tool, so that the shaft to be machined is further guaranteed not to have position deviation in the machining process, and the consistency of the machining positions of the shafts in the same batch is also guaranteed.

The utility model has the advantages that: the utility model has the advantages of simple structure, easy operation has improved the symmetry of the double flute of axle processing and the life of frock.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of a manual indexing mechanism of the present invention;

FIG. 3 is a schematic structural view of the middle screw rod and the taper sleeve of the present invention;

FIG. 4 is a schematic view of a stepped shaft hole of the present invention;

in the figure: 1-a base; 2-mounting holes; 3-step shaft hole; 301-large pore diameter end; 302-small aperture end; 4-manual indexing mechanism; 401-a latch; 402-a spring; 403-spring pressing block; 404-a handle; 5-positioning pins; 6-a guide groove; 7-tool adjustment sheet; 8-bolt; 9-fitting the workpiece; 10-positioning pin matching sleeve; 11-a screw; 12-taper sleeve.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience of description and simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The utility model provides a simple structure, easy operation has improved the double flute symmetry of axle processing and the life of frock.

Example 1

As shown in fig. 1, an axial opposite side double-sided groove broaching tool comprises a base 1 and a positioning pin 5, wherein mounting holes 2 are formed in two ends of the base 1, a stepped shaft hole 3 is formed in the middle of the base 1 along the horizontal direction, the stepped shaft hole 3 is a through hole, a guide groove 6 for a cutter to pass through is formed in the bottom of the stepped shaft hole 3, a bolt hole is formed in the top of the base 1, a manual indexing mechanism 4 is installed on the top of the base 1 through the bolt hole, and a positioning hole matched with the positioning pin 5 is further formed in the top of the base 1.

Further, the outer edge of the guide groove 6 is provided with a cutter adjusting sheet 7, the cutter adjusting sheet 7 is provided with a U-shaped hole, and a bolt 8 penetrates through the U-shaped hole to fix the cutter adjusting sheet 7.

Further, the inner wall of the large-aperture end 301 of the stepped shaft hole 3 is sleeved with a workpiece matching sleeve 9, and the workpiece matching sleeve 9 is provided with an open slot for a cutter to pass through, a first slot hole for the positioning pin 5 to pass through, and a second slot hole for installing the manual indexing mechanism 4. The workpiece matching sleeve 9 reduces the direct abrasion of the workpiece to the tool, and prolongs the service life of the tool.

In addition, the first slot hole is concentric with the positioning through hole, and the second slot hole is concentric with the pin hole.

Further, a positioning pin matching sleeve 10 is arranged in the positioning hole. The positioning pin matching sleeve 10 reduces direct abrasion of the positioning pin to the tool, and prolongs the service life of the tool.

As shown in fig. 2, further, the manual indexing mechanism 4 includes a pin 401, a spring 402 is sleeved on the pin 401, and sequentially penetrates through a pin hole at the top of the base 1 and a second slot hole of the workpiece fitting sleeve 9, and an upper end of the pin 401 is sequentially in threaded connection with a spring pressing block 403 and a handle 404. The bolt hole at the top of the base 1 is used for the bolt 401 and the spring 402 to pass through, when the handle 404 is tightened by rotating, the spring pressing block 403 moves downwards, and the shaft to be processed is fixed in the tool.

As shown in fig. 3, further, the screw rod 11 and the taper sleeve 12 are further included, the screw rod 11 axially penetrates through the stepped shaft hole 3, the taper sleeve 12 is sleeved on the screw rod 11, and the taper sleeve is in interference fit with the small-bore end of the stepped shaft hole. The diameter of the screw is smaller than the inner diameter of the shaft to be machined, and the taper sleeve abuts against the rear end of the shaft to be machined, so that the workpiece is further prevented from deviating during machining.

The utility model provides a pair of axle opposite side double groove broaching frock's application method:

firstly, a tool base 1 is arranged on a machine tool, then one end of a shaft to be machined is inserted into a large-aperture end 301 of a stepped shaft hole 3, the inner diameter of the large-aperture end 301 is matched with the outer diameter of the shaft to be machined after a workpiece matching sleeve 9 is arranged on the inner wall of the large-aperture end 301, then a manual indexing mechanism 4 is screwed to fix the shaft to be machined, then a cutter is inserted into a guide groove 6, a cutter adjusting sheet 7 is adjusted to ensure the coaxiality of the cutter and the workpiece matching sleeve 9, and then the cutter slides through the guide groove 6 to complete the machining of a first machining groove;

unscrewing manual indexing mechanism 4, adjusting the position of treating the processing axle, ensure that first processing groove is rotatory to positioning hole's position, insert locating pin 5 for 5 chucking of locating pin are in first processing inslot, wherein, 5 bottoms of locating pin cooperate with first processing groove, the reliability of location when having guaranteed processing second processing groove also ensures the symmetry of broaching double flute, then screws manual indexing mechanism 4, and the cutter slides through guide way 6, accomplishes the processing in second processing groove promptly.

In addition, after the shaft to be machined is fixed, the screw rod 11 can be further installed, the screw rod 11 is sleeved with the taper sleeve 12, the taper sleeve 12 is in interference fit with the small-bore end 302 of the stepped shaft hole 3, the taper sleeve 12 abuts against the rear end of the shaft to be machined, the step further ensures that the shaft to be machined is not displaced in the machining process, and machining precision is improved. And the consistency of the processing positions of the shafts in the same batch is also ensured.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (6)

1. The utility model provides an axle opposite side double faced groove broaching frock, its characterized in that, includes base, locating pin and manual indexing mechanism, the both ends of base are equipped with the mounting hole, the middle part of base is equipped with the ladder shaft hole along the horizontal direction, the ladder shaft hole is the through-hole, the bottom in ladder shaft hole is equipped with the guide way that supplies the cutter to pass, the bolt hole has been seted up at the top of base, manual indexing mechanism passes through the bolt hole is installed on the top of base, the top of base still seted up with locating pin matched with positioning hole.

2. The tool according to claim 1, wherein a plurality of tool adjustment sheets are disposed on the outer edge of the guide groove, the tool adjustment sheets are provided with U-shaped holes, and bolts are inserted through the U-shaped holes to fix the tool adjustment sheets.

3. The tool for broaching the shaft-to-edge double-sided slot as recited in claim 1, wherein a workpiece fitting sleeve is sleeved on an inner wall of a large-aperture end of the stepped shaft hole, and the workpiece fitting sleeve is provided with an open slot for a cutter to pass through, a first slot hole for the positioning pin to pass through, and a second slot hole for mounting the manual indexing mechanism.

4. The tool according to claim 1, wherein a positioning pin fitting sleeve is arranged in the positioning through hole.

5. The tool according to claim 3, wherein the manual indexing mechanism comprises a bolt, the bolt sequentially penetrates through the bolt hole and the second slot hole, a spring is sleeved on the bolt, and the upper end of the bolt is sequentially in threaded connection with a spring pressing block and a handle.

6. The tool according to any one of claims 1 to 5, further comprising a screw rod and a taper sleeve, wherein the screw rod axially penetrates through the stepped shaft hole, the taper sleeve is sleeved on the screw rod, and the outer diameter of the taper sleeve is in interference fit with the small-bore end of the stepped shaft hole.

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