CN215903075U

CN215903075U - Machining auxiliary tool for ensuring jumping degree of conical hole on cylinder cover of diesel engine

Info

Publication number: CN215903075U
Application number: CN202122271493.0U
Authority: CN
Inventors: 张帅军; 李蕾; 王青川
Original assignee: Shannxi Diesel Engine Heavy Industry Co Ltd
Current assignee: Shannxi Diesel Engine Heavy Industry Co Ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-02-25
Anticipated expiration: 2031-09-18

Abstract

The utility model provides a supplementary utensil of processing for guaranteeing diesel engine cylinder cover upper cone hole degree of beating, includes the cutter arbor, the removable tool bit that is fixed with of cutter arbor left end, the taper hole of starting valve reference hole left end on the cylinder cap is processed through the tool bit, be equipped with on the cutter arbor with starting valve reference hole right-hand member adaptation and be used for carrying out the guide pin bushing of fixing a position to the cutter arbor that is located starting valve reference hole, the cutter arbor right-hand member is equipped with the handle of being convenient for control cutter arbor pivoted. According to the utility model, the cutter head for processing the taper hole is detachably fixed at the left end of the cutter bar, and the guide sleeve for accurately positioning the cutter bar in the starting valve reference hole is arranged, so that the complementary processing of the taper hole at the left end of the starting valve reference hole is realized, the error of the taper hole in the processing process is eliminated, the requirement of the runout degree of the taper hole relative to the starting valve reference hole is realized, and the product quality is ensured.

Description

Machining auxiliary tool for ensuring jumping degree of conical hole on cylinder cover of diesel engine

Technical Field

The utility model belongs to the technical field of diesel engine cylinder cover machining, and particularly relates to a machining auxiliary tool for ensuring the jumping degree of a taper hole in a diesel engine cylinder cover.

Background

The cylinder cover of the diesel engine is an iron casting, the material is QT400-15, there is a starting valve hole used for installing the starting valve on the cylinder cover, because the cylinder cover is thicker, cause the starting valve hole to be deeper, the inferior part of the starting valve hole has a taper hole used for sealing, the benchmark hole relative to upper portion has a requirement of jumping degree 0.05, the structure of the starting valve hole is as shown in figure 1; the existing method for processing the starting valve hole comprises the following steps: the horizontal machining center is provided with a clamp, a cylinder cover is clamped on the clamp, a starting valve hole is in the horizontal direction, a fine boring cutter is adopted to machine a reference hole at the position of the cylinder cover where the starting valve hole is machined, and then a forming milling cutter is used for machining a taper hole.

SUMMERY OF THE UTILITY MODEL

The technical problems solved by the utility model are as follows: the utility model provides a supplementary utensil of processing for guaranteeing taper hole degree of beating on diesel engine cylinder head, through the cutter head that is used for processing the taper hole at the removable fixed cutter arbor left end and the guide pin bushing that the setting is used for carrying out accurate location to the cutter arbor in the starting valve reference hole, realize the supplementary processing of starting valve reference hole left end taper hole, eliminated the error of taper hole in the course of working, realized the requirement of taper hole relative starting valve reference hole degree of beating, guaranteed product quality.

The technical scheme adopted by the utility model is as follows: a processing assistive device for guaranteeing diesel engine cylinder head upper cone hole degree of beating, including the cutter arbor, the removable tool bit that is fixed with of cutter arbor left end, the taper hole that starts valve benchmark hole left end on the cylinder cap is processed through the tool bit, be equipped with on the cutter arbor with start valve benchmark hole right-hand member adaptation and be used for carrying out the guide pin bushing of fixing a position to the cutter arbor that is located in the start valve benchmark hole, the cutter arbor right-hand member is equipped with the handle of being convenient for control cutter arbor pivoted.

The tool bit is in clearance fit with the left end of the tool bar, the right side wall of the tool bit abuts against a positioning shaft shoulder at the left end of the tool bar, a locking nut located on the left side of the tool bit is in threaded connection with the left end of the tool bar and then fixes the tool bit on the tool bar, and a gasket sleeved on the tool bar is arranged between the tool bit and the locking nut.

Further, the excircle of the guide sleeve is of a conical structure with the taper of 1: 2000.

Furthermore, the guide sleeve is in clearance fit with the cutter bar, and the positioning precision of the cutter bar in the reference hole of the starting valve in the large tolerance range is adjusted by replacing the guide sleeve with different outer diameter sizes.

Further, the tool bit comprises an angle surface countersink drill, an angle surface extrusion cutter and a grinder which are sequentially and separately detachably mounted at the left end of the tool bar.

Further, the handle is of a rod-shaped structure, and the handle is perpendicular to the cutter bar and fixed at the right end of the cutter bar.

Compared with the prior art, the utility model has the advantages that:

1. according to the technical scheme, the cutter head for machining the taper hole is detachably fixed at the left end of the cutter bar, the guide sleeve for accurately positioning the cutter bar in the starting valve reference hole is arranged, the complementary machining of the taper hole at the left end of the starting valve reference hole is realized under the accurate positioning of the guide sleeve, and the error of the taper hole in the machining process is eliminated;

2. according to the technical scheme, the rod-shaped handle is vertically fixed at the right end of the cutter bar, so that the rotation action of the cutter bar is convenient to operate, and meanwhile, appropriate force can be applied to scrape and grind the inner wall surface of the taper hole;

3. according to the technical scheme, the guide sleeves of the conical structures with different outer diameter sizes and the outer circles of 1:2000 conicity are arranged, so that the fit clearance of the cutter bar in the starting valve reference hole in a large tolerance range is eliminated, and the use requirements of different starting valve reference hole apertures are met;

3. the technical scheme has the advantages of simple structure, convenience in disassembly and wide application range, realizes the requirement of the jumping degree of the taper hole relative to the starting valve reference hole, and ensures the product quality.

Drawings

FIG. 1 is a schematic structural view of a cylinder head with a starting valve hole machined;

FIG. 2 is a schematic structural view of the present invention;

Detailed Description

In the following, an embodiment of the present invention will be described in conjunction with fig. 1-2, so as to clearly and completely describe the technical solutions, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, but not all of the embodiment.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

The machining auxiliary tool for ensuring the jumping degree of the taper hole in the cylinder cover of the diesel engine comprises a cutter bar 1, wherein a cutter head 4 is detachably fixed at the left end of the cutter bar 1, a taper hole 3 at the left end of a reference hole 2 of a starting valve on a cylinder cover 7 is machined through the cutter head 4, a guide sleeve 5 which is matched with the right end of the reference hole 2 of the starting valve and used for positioning the cutter bar 1 in the reference hole 2 of the starting valve is arranged on the cutter bar 1, and a handle 6 which is convenient for controlling the cutter bar 1 to rotate is arranged at the right end of the cutter bar 1; specifically, the handle 6 is of a rod-shaped structure, and the handle 6 is perpendicular to the cutter bar 1 and is fixed at the right end of the cutter bar 1; in the structure, the cutter head 4 for processing the taper hole 3 is detachably fixed at the left end of the cutter bar 1, and the guide sleeve 5 for accurately positioning the cutter bar 1 in the starting valve reference hole 2 is arranged, so that the complementary processing of the taper hole 3 at the left end of the starting valve reference hole 2 is realized under the accurate positioning of the guide sleeve 5, and the error of the taper hole 3 in the processing process is eliminated; the right end of the cutter bar 1 is vertically fixed with a rod-shaped handle 6, so that the rotation action of the cutter bar 1 is convenient to operate, and meanwhile, proper force can be applied to scrape and grind the inner wall surface of the taper hole 3;

the specific fixing structure of the cutter head 4 on the cutter bar 1 is as follows: the tool bit 4 is in clearance fit with the left end of the tool bar 1, the right side wall of the tool bit 4 is abutted against a positioning shaft shoulder at the left end of the tool bar 1, the tool bit 4 is fixed on the tool bar 1 after the locking nut 8 at the left side of the tool bit 4 is in threaded connection with the left end of the tool bar 1, and a gasket 9 sleeved on the tool bar 1 is arranged between the tool bit 4 and the locking nut 8.

The excircle of the guide sleeve 5 is of a conical structure with the taper of 1: 2000; specifically, the guide sleeve 5 is in clearance fit with the cutter bar 1, and the positioning precision of the cutter bar 1 in the starting valve reference hole 2 in a large tolerance range is adjusted by replacing the guide sleeve 5 with different outer diameter sizes; in the structure, the guide sleeves 5 with the conical structures are arranged, the outer diameters of the guide sleeves are different, the outer circles of the guide sleeves are 1:2000 conical degrees, fit gaps of the cutter bar 1 in the starting valve reference hole 2 in a large tolerance range are eliminated, and therefore the use requirements of different diameters of the starting valve reference hole 2 are met;

tool bit 4 is including in proper order alone removable the installing in the angle face countersink of 1 left end of cutter arbor, angle face extrusion sword and mill, and wherein, angle face countersink is used for the countersink before the processing of taper hole 3, rectifies the position in hole, and angle face extrusion sword is used for the smooth conical surface, finally polishes taper hole 3 with the mill, guarantees roughness.

The technical scheme has the advantages of simple structure, convenience in disassembly and wide application range, realizes the requirement of the jumping degree of the taper hole 3 relative to the starting valve reference hole, and ensures the product quality.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A utensil is assisted in processing for guaranteeing diesel engine cylinder cover taper hole degree of beating, its characterized in that: including cutter arbor (1), removable tool bit (4) that is fixed with of cutter arbor (1) left end, taper hole (3) of starting valve benchmark hole (2) left end on cylinder cap (7) are processed through tool bit (4), be equipped with on cutter arbor (1) with start valve benchmark hole (2) right-hand member adaptation and be used for carrying out guide pin bushing (5) of fixing a position cutter arbor (1) that lie in starting valve benchmark hole (2), cutter arbor (1) right-hand member is equipped with handle (6) convenient to control cutter arbor (1) pivoted.

2. The processing aid for ensuring the jump degree of the taper hole on the cylinder cover of the diesel engine as recited in claim 1, wherein: tool bit (4) clearance fit in cutter arbor (1) left end, tool bit (4) right side wall supports on the location shaft shoulder of cutter arbor (1) left end, is located behind left lock nut (8) of tool bit (4) and the left end part threaded connection of cutter arbor (1) with tool bit (4) be fixed in on cutter arbor (1), be equipped with between tool bit (4) and lock nut (8) suit gasket (9) on cutter arbor (1).

3. The processing aid for ensuring the jump degree of the taper hole on the cylinder cover of the diesel engine as recited in claim 1, wherein: the excircle of the guide sleeve (5) is of a conical structure with the taper of 1: 2000.

4. The processing aid for ensuring the jump degree of the taper hole on the cylinder cover of the diesel engine as recited in claim 3, wherein: the guide sleeve (5) is in clearance fit with the cutter bar (1), and the positioning accuracy of the cutter bar (1) in the starting valve reference hole (2) in a large tolerance range is adjusted by replacing the guide sleeve (5) with different outer diameter sizes.

5. The processing aid for ensuring the jump degree of the taper hole on the cylinder cover of the diesel engine as recited in claim 1, wherein: the cutter head (4) comprises an angle surface countersink drill, an angle surface extrusion cutter and a grinder which are sequentially and independently detachably mounted at the left end of the cutter bar (1).

6. A processing aid for ensuring the jump degree of a taper hole on a cylinder head of a diesel engine according to claim 1, 2, 3, 4 or 5, characterized in that: the handle (6) is of a rod-shaped structure, and the handle (6) is perpendicular to the cutter bar (1) and is fixed at the right end of the cutter bar (1).