CN208116854U - A kind of automobile engine cylinder head tappet hole roughing tool - Google Patents

Abstract

A kind of automobile engine cylinder head tappet hole roughing tool,Overcoming the prior art is actually single-blade cutting,It is easy to produce and allows knife phenomenon,Seriously affect product quality,The problem of to cutter and a kind of very big damage,It is characterized in processing symmetrical 2 trough with straight angle on single order knife bar and second order knife bar,Symmetrical 2 fan-shaped end faces are formed on end face,Cutting tip on single order is installed in the cutter mounting groove of single order knife bar,Cutting tip under single order is installed in the bottom knife mounting groove of single order knife bar,Beneficial effect is,Since the single-blade cutting of diameter is changed to twolip cutting,It effectively prevents allowing knife phenomenon in process,Improve the stability of product size,Simultaneously,Twolip cuts the side stress that can also reduce blade,Extend the service life of blade,Even if in the case where a piece of blade tipping,Another blade can also play a protective role to knife bar,The consequence with knife bar cutting workpiece is not will cause,The cost of charp tool is saved.

Description

A kind of automobile engine cylinder head tappet hole roughing tool

Technical field

The utility model belongs to automobile engine cylinder head process tool technical field, in particular to a kind of automotive engine cylinder Lid tappet hole roughing tool.

Background technique

In the prior art, automobile engine cylinder head tappet hole is during roughing, cutter need to be provided simultaneously with ream bottom surface and Two kinds of functions of processing shoulder hole diameter, conventional knife is as shown in figure 3, the cutter is to process two on knife bar first step 3-1 A asymmetric trough with straight angle processes two symmetrical trough with straight angle on second step 3-2, processes in the side of each trough with straight angle There are two blade installation slots in left and right, and be separately installed with triangular blade in each blade installation slot, wherein in first step Inboard blade on 3-1 crosses center, and the triangular blade for crossing center plays the role of ream tappet hole bottom surface, in first step 3-1 On another blade be arranged in outside, play the role of process tappet hole bore dia.The cutter the problem is that, due to Only 1, outside blade processes tappet bore dia on first step 3-1, and actually single-blade is cut, since machining allowance is larger, It is easy to produce and allows knife phenomenon, influence the stability of tappet bore dia processing, cause processing hole aperture less than normal, seriously affect product matter Amount, rejected product need to be reprocessed, time-consuming, and will lead to blade larger, the knife that bears cutting force when single-blade cutting outer diameter Piece is easy tipping, and knife bar will directly cut workpiece after blade tipping, to cutter and a kind of very big damage.The prior art In, also having a kind of cutter is the upper arrangement three pieces parallelogram blade on knife bar first step, can solve unilateral stress and asks Topic, but this knife bar manufacturing process is difficult, and cost is very high.

Utility model content

Problem to be solved in the utility model is, under the premise of not influencing cylinder cap quality, overcomes the prior art not Foot place and defect, providing one kind can effectively improve cylinder cap tappet bore dia processing stability, while the cutter improved makes With a kind of automobile engine cylinder head tappet hole roughing tool in service life.

The technical solution adopted in the utility model includes single order knife bar, second order knife bar, cutting tip, second order incision on second order Paring blade and knife handle, the cold hole in single order knife bar, second order knife bar and the center of knife handle are machined with and are connected to, in the single order knife bar With symmetrical 2 trough with straight angle are processed on second order knife bar, symmetrical 2 fan-shaped end faces are formed on end face, in each scalloped end The side in face is machined with blade installation slot, is connected and installed on single order and is cut with screw in the cutter mounting groove of single order knife bar Blade is connected and installed with cutting tip under single order in the bottom knife mounting groove of single order knife bar with screw.

Cutting tip is symmetrically mounted on the two sides of single order knife bar center line under cutting tip and single order on the single order.

Compared with prior art, the utility model has the beneficial effects that：

（1）The utility model, will due to moving to the triangular blade for crossing center on conventional knife knife bar on the outside of knife bar The single-blade cutting of diameter is changed to twolip cutting, effectively prevents allowing knife phenomenon in process, improves product size Stability, meanwhile, twolip cuts the side stress that can also reduce blade, extends the service life of blade, even if in a piece of blade In the case where tipping, another blade can also play a protective role to knife bar, not will cause the consequence with knife bar cutting workpiece, section The about cost of charp tool.

（2）The utility model is due to moving to the triangular blade for crossing center on conventional knife knife bar on the outside of knife bar, meeting Cause knife bar center sub-fraction without blade cut, generate a boss, influences the processing of guide hole, but by adjusting processing work Skill can overcome the problems, such as this, i.e., originally will first process tappet hole post-processing guide hole, be changed to first process guide hole, post-processing tappet Hole, this processing technology adjust the quality that will not influence product, after improving processing technology, cutting tip and single order on the single order Lower cutting tip is simultaneously for processing the diameter of tappet hole single order stepped hole and the bottom surface of tappet hole, bite on the second order Cutting tip is used to process the diameter of tappet hole second order stepped hole under piece and second order, and realizing the utility model is not influencing cylinder cap Under the premise of quality, the stability of cylinder cap tappet bore dia processing, while the cutting-tool's used life improved are effectively improved.

Detailed description of the invention

Fig. 1 is the main view of the utility model；

Fig. 2 is the left view of Fig. 1；

Fig. 3 is the shaft portion schematic diagram of prior art cutter.

In figure：

Cutting tip on 1-1. single order, cutting tip under 1-2. single order,

Cutting tip on 1-3. second order, cutting tip under 1-4. second order,

Cold hole in 2.,

3-1. single order knife bar, 3-2. second order knife bar, 3-3. sector end face,

4. knife handle.

Specific embodiment

Below in conjunction with attached drawing, the utility model is described in further detail.

As depicted in figs. 1 and 2, the technical solution adopted in the utility model include single order knife bar 3-1, second order knife bar 3-2 and Knife handle 4, the cold hole 2 in single order knife bar 3-1, second order knife bar 3-2 and the center of knife handle 4 are machined with and are connected to, in the single order knife Symmetrical two trough with straight angle are processed on bar 3-1 and second order knife bar 3-2 knife, form two symmetrical sector end face 3- on end face 3, it is machined with blade installation slot in the side of each sector end face 3-3, is respectively formed in single order knife bar 3-1 and second order knife bar 3-2 Upper and lower 2 blade installation slots, are connected and installed with cutting tip on single order with screw in the cutter mounting groove of single order knife bar 3-1 1-1, is connected and installed with cutting tip 1-2 under single order in the bottom knife mounting groove of single order knife bar 3-1 with screw, on the single order Cutting tip 1-2 is symmetrically mounted on the two sides of single order knife bar 3-1 center line under cutting tip 1-1 and single order, for processing tappet The diameter of hole single order stepped hole and the bottom surface of tappet hole are connected with screw in the cutter mounting groove of second order knife bar 3-2 and are installed There is cutting tip 1-3 on second order, is connected and installed with bite under second order with screw in the bottom knife mounting groove of second order knife bar 3-2 Piece 1-4, cutting tip 1-4 is installed in outside under cutting tip 1-3 and second order on the second order, for processing tappet hole second order The diameter of stepped hole.

Claims (2)

1. a kind of automobile engine cylinder head tappet hole roughing tool, including single order knife bar（3-1）, second order knife bar（3-2）, second order Upper cutting tip（1-3）, cutting tip under second order（1-4）And knife handle（4）, in single order knife bar（3-1）, second order knife bar（3-2）With Knife handle（4）Center be machined with the interior cold hole of connection（2）, which is characterized in that in the single order knife bar（3-1）With second order knife bar （3-2）Symmetrical 2 trough with straight angle are processed on knife, and symmetrical 2 fan-shaped end faces are formed on end face（3-3）, in each sector End face（3-3）Side be machined with blade installation slot, in single order knife bar（3-1）Cutter mounting groove in screw connect install There is cutting tip on single order（1-1）, in single order knife bar（3-1）Bottom knife mounting groove in screw be connected and installed with single order incision Paring blade（1-2）.

2. a kind of automobile engine cylinder head tappet hole roughing tool according to claim 1, which is characterized in that described one Cutting tip on rank（1-1）1 and single order under cutting tip（1-2）It is symmetrically mounted on single order knife bar（3-1）The two sides of center line.