CN218746591U

CN218746591U - Special clamp for grinding thread cutter

Info

Publication number: CN218746591U
Application number: CN202222859927.3U
Authority: CN
Inventors: 孟祥志; 董文斌; 赵伟; 王秋菊; 郭元庆; 李珺; 冯平; 朱佳伟; 付辉
Original assignee: Qiqihar Jianhua Machinery Co ltd
Current assignee: Qiqihar Jianhua Machinery Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-03-28
Anticipated expiration: 2032-10-28

Abstract

The invention relates to a special fixture for a grinding thread cutter, which mainly comprises a fixed claw, a pitching angle adjusting disc, an adjusting disc and a base, wherein the fixed claw is fixed on the base; the cutter block is arranged on the fixed claw, and the fixed claw is assembled with the pitching angle adjusting disc; the adjusting disc is arranged on the base and can rotate relative to the base; the pitching angle adjusting disc mainly comprises a clamping hoop, a main rear angle adjusting rotary disc, an auxiliary rear angle adjusting rotary disc, a fastening screw and a square rotating shaft; the clamp hoop is welded and fixed with the excircle of the main relief angle adjusting turntable, the lower end of the excircle of the auxiliary relief angle adjusting turntable is welded and fixed with the square rotating shaft, the main relief angle adjusting turntable and the auxiliary relief angle adjusting turntable can rotate relatively and are fastened through fastening screws, and the square rotating shaft is vertically inserted into a square groove of the adjusting plate. The utility model discloses the adjustment is convenient, and simple structure is compact, has a plurality of motion axle directions that can reconcile, can be according to the demand of various work pieces, and convenient, swift grinding goes out required screw thread angle, guarantees the geometric parameters precision and the roughness of screw thread cutter.

Description

Special clamp for grinding thread cutter

Technical Field

The utility model belongs to the technical field of machining, concretely relates to grinding thread cutter special fixture.

Background

In the machine manufacturing, a plurality of high-hardness precision measuring tools or precision workpieces are provided with threads, such as threaded cutters, the parts are generally made of T10A or CrWMn materials, the quenching hardness is HRC 60-64, and the high-hardness precision threaded workpieces have strict requirements on the tolerance size of the pitch diameter, the angle and the thread pitch. The grinding and processing of the material are difficult, the size is difficult to control, the yield is low, and the use of the finished product is often influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a grinding thread cutter special fixture, the technical problem who solves is: the processing problem of grinding of the high-hardness precise internal thread tool is solved.

In order to solve the technical problem, the utility model provides a grinding thread cutter special fixture, its characterized in that: mainly comprises a fixed claw, a pitching angle adjusting disc, an adjusting disc and a base; the cutter block is arranged on the fixed claw, and the fixed claw is assembled with the pitching angle adjusting disc; the adjusting disc is arranged on the base and can rotate relative to the base; the pitching angle adjusting disc mainly comprises a clamping hoop, a main rear angle adjusting rotary disc, an auxiliary rear angle adjusting rotary disc, a fastening screw and a square rotating shaft; the clamp hoop is welded and fixed with the excircle of the main relief angle adjusting turntable, the lower end of the excircle of the auxiliary relief angle adjusting turntable is welded and fixed with the square rotating shaft, the main relief angle adjusting turntable and the auxiliary relief angle adjusting turntable can rotate relatively and are fastened through fastening screws, and the square rotating shaft is vertically inserted into a square groove of the adjusting plate.

The adjusting rod is fixed on the side wall of the adjusting disc along the radial direction, and the positioning block is installed on the base to limit the rotating angle of the adjusting rod.

The fixed claw mainly comprises a pressing claw, a screw, a spring, a fixed claw base and a rotating shaft; one end of the pressing claw is hinged with the fixed claw base through a rotating shaft; the knife block is placed in the groove of the fixed claw base, and the screw penetrates through the pressing claw to compress the spring downwards, so that the pressing claw presses the knife block.

Has the advantages that: the utility model discloses can treat grinding cutter and carry out the clamping for CM6140 type precision lathe adopts YT726 carbide blade, grinds out required threading tool angle, and this anchor clamps modern design, the adjustment is convenient, and simple structure is compact, has a plurality of motion axle directions that can reconcile, can be according to the demand of various work pieces, and convenient, swift grinding goes out required screw thread angle, guarantees threading tool's geometric parameters precision and roughness.

Drawings

FIG. 1 is a schematic view of the structure of the present invention

FIG. 2 is a schematic view of a grinding tooth type half angle adjusting disk

FIG. 3 is a schematic view of the combination of the grinding tooth type half angle adjusting disk, the positioning component and the base

FIG. 4 is a schematic view of the assembly of the tilt angle adjustment dial 3

FIG. 5 is a schematic view showing the assembly of the pitch angle adjusting disk 3 with the positioning member 4, the grinding tooth type half angle adjusting disk 5 and the base 6

FIG. 6 is an enlarged partial view of the pitch angle adjusting disk 3 assembled with the positioning member 4, the grinding tooth type half angle adjusting disk 5 and the base 6

FIG. 7 is a schematic view of the assembly of the female thread cutter block 1 and the fixed jaw 2

FIG. 8 is a schematic view of the internal thread cutter block 1, the fixed jaw 2 and the pitching angle adjusting disk 3 assembled and adjusted in angle

FIG. 9 is a schematic view of the main and auxiliary flank surfaces of a grinding female thread block

FIG. 10 is a partial enlarged view of the profile half angle of the internal thread tool block controlled by the grinding of the main and auxiliary flank surfaces of the internal thread tool block.

Detailed Description

In order to make the objects, contents and advantages of the present invention clearer, the following description will be made in further detail with respect to the embodiments of the present invention.

The utility model provides a special fixture for grinding threaded tools, as shown in figure 1, mainly comprises a fixed claw 2, a pitching angle adjusting disc 3, a positioning component 4, a grinding tooth type half-angle adjusting disc 5 and a base assembly 6;

the internal thread cutter block 1 is arranged on the fixed claw 2, and the fixed claw 2 and the pitching angle adjusting disc 3 are assembled and adjusted to a good angle; the grinding tooth type half-angle adjusting disc 5 is arranged on the base assembly 6 through the positioning component 4; the pitching angle adjusting disc 3 is vertically inserted into a square groove of the grinding tooth type half angle adjusting disc 5 and is connected with the base assembly.

The base assembly comprises a base 6-1, a steel ball 6-2, a bearing 6-3 and a nut 6-4; the base 6-1 is made of a whole piece of rectangular steel die steel, and an angle scale and a positioning groove for the positioning block 4-1 to slide are carved on the top surface.

Grinding the tooth-shaped half-angle adjusting disc 5, wherein the adjusting disc 5-1 and the adjusting rod 5-2 are wrapped; the positioning component 4 comprises a positioning block 4-1 and a screwing screw 4-2; the adjusting rod 5-2 is fixed on the side wall of the adjusting disc 5-1 along the radial direction, and the installed grinding tooth type half-angle adjusting disc 5 is placed in a circular groove on the top surface of the base 6-1; 2 positioning blocks 4-1 are placed in the grooves of the base 6-1 and are screwed down by 2 screwing screws 4-2; the adjusting rod is used for driving the adjusting disc to rotate relative to the base, and in the daily grinding process, the adjusting rod is slightly pushed manually, so that the adjusting rod is slightly contacted with the positioning component 4 to realize limiting.

The pitching angle adjusting disc 3 mainly comprises a screwing screw 3-1, a clamping hoop 3-2, a main rear angle adjusting rotary disc 3-3, an auxiliary rear angle adjusting rotary disc 3-4, a fastening screw 3-5, a fastening nut 3-6, a spring pad 3-7 and a square rotating shaft 3-8; the clamp 3-2 is welded and fixed with the main relief angle adjusting rotary disc 3-3, the side relief angle adjusting rotary disc 3-4 is welded and fixed with the square rotating shaft 3-8, the fastening screw 3-5 penetrates through the center hole of the main relief angle adjusting rotary disc 3-3 and the side relief angle adjusting rotary disc 3-4, the spring pad 3-7 is placed on the fastening screw 3-5, and the fastening screw 3-6 is used for pre-tightening. When the device is used, the fastening nuts 3-6 are loosened and slight clamping force is kept, the phenomenon that the angle change is too large when the nuts are loosened and fine adjusted due to over loosening is prevented, the angle between the main back angle adjusting rotary table 3-3 and the side back angle adjusting rotary table 3-4 is adjusted, the horizontal elevation angle of the clamping hoop 3-2 welded with the main back angle adjusting rotary table 3-3 is further adjusted, the main back angle to be ground of the internal thread cutter block is controlled to be 16 degrees +/-3', the front angle is O degrees, and after the adjustment is finished, the fastening nuts 3-6 are screwed, as shown in figure 4.

The lower end of the square rotating shaft 3-8 is of a threaded structure, the square rotating shaft 3-8 of the pitching angle adjusting disc 3 is vertically inserted into a square groove of the grinding tooth type half angle adjusting disc 5, a bearing 6-3 is arranged on the lower end face of the base 6-1 and sleeved on the square rotating shaft 3-8, the lower end of the square rotating shaft is screwed and limited by a nut 6-4, and the steel ball 6-2 is placed in the bearing 6-3, as shown in fig. 5 and 6.

The fixed claw 2 mainly comprises a pressing claw 2-1, a screw 2-2, a spring 2-3, a fixed claw base 2-4 and a rotating shaft 2-5; the tool block 1 to be ground is placed in a groove of a fixed claw base 2-4, and a screw 2-2 is screwed to compress a spring 2-3 downwards so that a pressing claw 2-1 presses the tool block 1 to be ground, as shown in fig. 7.

The fixing claw 2 is inserted into a circular groove of a clamping hoop 3-2 in the pitching angle adjusting disc 3, the tool block blank fixing claw 2 can rotate along an inner hole of the clamping hoop 3-2 by loosening a screwing screw 3-1, so that the reference surface of the internal thread tool block is ensured to be parallel to the plane of the grinding wheel, and the internal thread tool block blank fixing claw is screwed and fixed by the screwing screw 3-1. Rotating the front angle adjusting disc 3-3 according to the half angle of the thread tooth type required by the drawing to enable the angle to meet the requirement of the drawing; and then adjusting the position of the positioning block 4-1 on the scale in the groove of the base 6-1 according to the design requirements of the drawing, and fixing the positioning block 4-1 by screwing the screw 4-2, as shown in fig. 8.

And (3) using a fixing tool which is fixed with the tool block 1 to be ground to be close to the carborundum grinding wheel 7, and grinding to the size required by the drawing as shown in figure 9.

The clamp is novel in design, convenient to adjust, simple and compact in structure, has a plurality of adjustable movement shaft directions, can conveniently and quickly grind required thread angles according to the requirements of various workpieces, and guarantees the geometric parameter precision and the surface finish of a thread cutter.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a grinding thread cutter special fixture which characterized in that: mainly comprises a fixed claw, a pitching angle adjusting disc, an adjusting disc and a base; the cutter block is arranged on the fixed claw, and the fixed claw is assembled with the pitching angle adjusting disc; the adjusting disc is arranged on the base and can rotate relative to the base; the pitching angle adjusting disc mainly comprises a clamping hoop, a main rear angle adjusting rotary disc, an auxiliary rear angle adjusting rotary disc, a fastening screw and a square rotating shaft; the clamp hoop is welded and fixed with the excircle of the main relief angle adjusting turntable, the lower end of the excircle of the auxiliary relief angle adjusting turntable is welded and fixed with the square rotating shaft, the main relief angle adjusting turntable and the auxiliary relief angle adjusting turntable can rotate relatively and are fastened through fastening screws, and the square rotating shaft is vertically inserted into a square groove of the adjusting plate.

2. The special clamp for grinding the threaded tool according to claim 1, wherein: the adjusting rod is fixed on the side wall of the adjusting disc along the radial direction, and the positioning block is installed on the base to limit the rotation angle of the adjusting rod.

3. The special clamp for grinding the threaded tool according to claim 1, wherein: the fixed claw mainly comprises a pressing claw, a screw, a spring, a fixed claw base and a rotating shaft; one end of the pressing claw is hinged with the fixed claw base through a rotating shaft; the knife block is placed in the groove of the fixed claw base, and the screw penetrates through the pressing claw to compress the spring downwards, so that the pressing claw presses the knife block.

4. A special fixture for grinding a threaded tool according to claim 3, wherein: the fixed claw is inserted into a circular groove of the clamp hoop in the pitching angle adjusting disc, the fixed claw can rotate along an inner hole of the clamp hoop, and the clamp hoop is screwed down to fix the fixed claw by screwing a screw.

5. The special clamp for grinding the threaded tool according to claim 2, wherein: an angle scale and a positioning groove for the sliding of the positioning block are carved on the top surface of the base.

6. The special clamp for grinding the threaded tool according to claim 2, wherein: the lower end of the square rotating shaft is of a threaded structure, a bearing is arranged on the lower end face of the base and sleeved on the square rotating shaft, and the bearing is screwed down with the lower end of the square rotating shaft through a nut and limited.

7. The special clamp for grinding the threaded tool according to claim 2, wherein: the fastening screw penetrates through the center holes of the main rear angle adjusting turntable and the auxiliary rear angle adjusting turntable, the spring pad is placed on the fastening screw, and the fastening screw is pre-tightened by the fastening nut.

8. The special clamp for grinding the threaded tool according to claim 1, wherein: the adjusting disc is arranged in the circular groove on the top surface of the base.

9. The special clamp for grinding the threaded tool according to claim 2, wherein: the base is provided with 2 positioning blocks.