CN210615803U - A jig for machining inclined hole on cylindrical surface of piston rod - Google Patents
A jig for machining inclined hole on cylindrical surface of piston rod Download PDFInfo
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- CN210615803U CN210615803U CN201920994900.0U CN201920994900U CN210615803U CN 210615803 U CN210615803 U CN 210615803U CN 201920994900 U CN201920994900 U CN 201920994900U CN 210615803 U CN210615803 U CN 210615803U
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Abstract
本实用新型提供一种活塞杆圆柱面斜孔加工夹具，包括夹具体、定位块、调整块及支撑块，夹具体之上设置有倾斜基准面和工作基准面，定位块通过使用螺栓固定在夹具体的倾斜基准面上，调整块通过使用螺栓固定在定位块上，支撑块通过使用螺栓固定在定位块两侧，倾斜基准面之上设置有用于安装活塞杆的内孔，工作基准面之上设置有与内孔连通的导向孔，导向孔垂直于工作基准面。采用本实用新型可以扩大普通台式钻床的加工范围，能方便、快捷地加工出活塞杆圆柱面上的斜孔，能有效解决钻头在加工过程中易折断的问题，从而提高加工精度、生产效率，降低加工成本，减轻工人的劳动强度。
This utility model provides a jig for machining inclined holes on the cylindrical surface of a piston rod, including a jig body, a positioning block, an adjusting block, and a supporting block. An inclined reference surface and a working reference surface are provided on the jig body. The positioning block is fixed to the inclined reference surface of the jig body with bolts. The adjusting block is fixed to the positioning block with bolts. The supporting block is fixed to both sides of the positioning block with bolts. An inner hole for mounting the piston rod is provided on the inclined reference surface, and a guide hole communicating with the inner hole is provided on the working reference surface, perpendicular to the working reference surface. This utility model can expand the machining range of ordinary bench drills, enabling convenient and quick machining of inclined holes on the cylindrical surface of piston rods. It effectively solves the problem of drill bit breakage during machining, thereby improving machining accuracy, production efficiency, reducing machining costs, and alleviating the labor intensity of workers.
Description
Technical Field
The utility model belongs to the technical field of machining process equipment, especially, relate to a piston rod face of cylinder inclined hole adds clamping apparatus.
Background
The piston rod is one of the important parts of the cylinder body or the hydraulic assembly, the machining precision of the parts is high, and the machining of the inclined hole on the cylindrical surface of the piston rod is extremely difficult. Firstly, the inclined holes on the cylindrical surface are difficult to position; secondly, the drill bit is easy to deflect and break off in the inclined hole machining process. At present, the processing of the inclined hole on the cylindrical surface of the piston rod is mainly completed by various numerical control machines or complex technical equipment matched with a common machine tool, the processing method has higher requirements on the skills of operators and the performance of processing equipment, and the production cost of products is increased. Therefore, in order to improve the machining efficiency of the inclined hole and reduce the production cost, a special fixture suitable for machining the inclined hole is needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a long and thin BTA device of control valve.
The utility model discloses a following technical scheme can realize.
The utility model provides a control valve slender deep hole processing device, which comprises a clamp body, a positioning block, an adjusting block and a supporting block, a surface of the upper side of the fixture body, which is inclined relative to the horizontal plane, is used as an inclined reference plane, a surface of the upper side of the fixture body, which is parallel to the horizontal plane, is used as a working reference plane, the included angle between the normal of the inclined reference surface and the normal of the working reference surface is consistent with the included angle between the axis of the inclined hole on the cylindrical surface of the piston rod and the axis of the piston rod, the positioning block is fixed on the inclined reference surface of the clamp body by using a bolt, the adjusting block is fixed on the positioning block by using a bolt, the supporting block is fixed on two sides of the positioning block by using bolts, an inner hole for installing a piston rod is arranged on the inclined reference surface, and a guide hole communicated with the inner hole is arranged on the working reference surface and is perpendicular to the working reference surface.
And a chamfer of not less than 3 multiplied by 45 degrees is arranged at the orifice of the guide hole.
The surface roughness of the inclined reference surface is not more than Ra1.6 mu m.
The surface roughness of the working reference surface is not more than Ra1.6 mu m.
The clamp body is made of alloy steel with the grade of CrWMn.
The fixture body is subjected to integral quenching treatment.
The bolt is an inner hexagonal socket head cap screw.
The fit clearance between the inner hole and the piston rod is not more than 0.5 mm.
The beneficial effects of the utility model reside in that: adopt the technical scheme of the utility model, through set up corresponding slope reference surface and work reference surface on the anchor clamps body, the drilling processing in conventional vertical hole is converted into with the processing of inclined hole, be favorable to enlarging ordinary bench drill's process range, can be convenient, swiftly process out the inclined hole on the piston rod face of a cylinder, can effectively solve the problem that the drill bit easily breaks in the course of working, thereby improve production efficiency, reduce the processing cost, alleviate workman's intensity of labour, furthermore, through setting up the chamfer in guiding hole drill way department, make ordinary drill make the drill bit aim at central point put in drilling course of working easily, through carrying out abrasive treatment respectively to slope reference surface and work reference surface, make it form smooth mirror surface, the machining precision of piston rod face of a cylinder inclined hole has effectively been promoted.
Drawings
Fig. 1 is a schematic structural view of the processing device of the present invention;
FIG. 2 is a view from direction K of FIG. 1;
fig. 3 is a schematic structural view of a piston rod to be processed according to the present invention;
FIG. 4 is a schematic structural view of the clamp body of the present invention;
fig. 5 is a schematic structural diagram of the positioning block of the present invention;
FIG. 6 is a top view of FIG. 5;
FIG. 7 is a view in the direction of P of FIG. 5;
FIG. 8 is a view in the direction Q of FIG. 5;
FIG. 9 is a schematic structural diagram of an adjusting block of the present invention;
FIG. 10 is a top view of FIG. 9;
FIG. 11 is a schematic structural view of the middle support block of the present invention;
fig. 12 is a top view of fig. 11.
In the figure: 1-a fixture body, 2-a positioning block, 3-an adjusting block, 4-a supporting block, 5-a bolt, 8-a hexagon bolt and 9-a piston rod.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1 and 2, the piston rod cylindrical surface inclined hole machining fixture of the present invention comprises a fixture body 1, a positioning block 2, an adjusting block 3 and a supporting block 4, wherein a surface inclined relative to a horizontal plane on one side of the fixture body 1 is used as an inclined reference surface, a surface parallel to the horizontal plane on one side of the fixture body 1 is used as a working reference surface, an included angle between a normal line of the inclined reference surface and a normal line of the working reference surface is consistent with an included angle between an inclined hole axis on the piston rod cylindrical surface and a piston rod axis, the positioning block 2 is fixed on the inclined reference surface of the fixture body 1 by using a bolt 5, the adjusting block 3 is fixed on the positioning block 2 by using a bolt 5, the supporting block 4 is fixed on two sides of the positioning block 2 by using a bolt 5, an inner hole for installing a piston rod 9 is arranged on the inclined reference, the guide hole is perpendicular to the working reference surface.
Adopt the technical scheme of the utility model, through set up corresponding slope reference surface and work reference surface on the anchor clamps body, the drilling processing in conventional vertical hole is converted into with the processing of inclined hole, be favorable to enlarging ordinary bench drill's process range, can be convenient, swiftly process out the inclined hole on the piston rod face of a cylinder, can effectively solve the problem that the drill bit easily breaks in the course of working, thereby improve production efficiency, reduce the processing cost, alleviate workman's intensity of labour, furthermore, through setting up the chamfer in guiding hole drill way department, make ordinary drill make the drill bit aim at central point put in drilling course of working easily, through carrying out abrasive treatment respectively to slope reference surface and work reference surface, make it form smooth mirror surface, the machining precision of piston rod face of a cylinder inclined hole has effectively been promoted.
Further, a chamfer not smaller than 3 x 45 degrees is arranged at the orifice of the guide hole. The surface roughness of the inclined reference surface is not more than Ra1.6 mu m. The surface roughness of the working reference surface is not more than Ra1.6 mu m. The material of the clamp body is alloy steel with the grade of CrWMn. The fixture body is subjected to integral quenching treatment. The bolt 5 is a socket head cap screw. The fit clearance between the inner hole and the piston rod 9 is not more than 0.5 mm. Adopt the technical scheme of the utility model, through set up the chamfer in guiding hole drill way department, make ordinary drilling machine make the drill bit aim at central point easily in the drilling course of working put, through carrying out abrasive treatment respectively to slope reference surface and working reference surface, make it form smooth mirror surface, effectively promoted the machining precision of piston rod face of cylinder inclined hole.
In addition, when using the utility model discloses add man-hour to piston rod face of cylinder inclined hole, concrete method step is as follows:
1, analyzing a part to be processed: analyzing the structure and the size of the piston rod 9 and the requirements of the size precision and the surface roughness of the inclined hole on the cylindrical surface of the piston rod; as shown in fig. 3, the specific structural dimensions of the piston rod 9 are as follows:
A. analyzing the size and tolerance requirements of an inclined hole phi d on the cylindrical surface of the piston rod 9 from the small end surface, and the included angle α between the inclined hole phi d and the excircle generatrix and the tolerance requirements;
B. and analyzing the position relation between the inclined hole phi d of the cylindrical surface of the piston rod 9 and the bottom surface of the inner hole phi d2 of the piston rod 9 and the bottom surface excircle phi d3 of the annular groove.
2, designing and manufacturing a piston rod cylindrical surface inclined hole machining clamp:
the machining device comprises a clamp body 1, a positioning block 2, an adjusting block 3 and a supporting block 4, wherein a surface inclined relative to a horizontal plane on one side of the clamp body 1 serves as an inclined reference plane, a surface parallel to the horizontal plane on one side of the clamp body 1 serves as a working reference plane, an included angle between a normal line of the inclined reference plane and a normal line of the working reference plane is consistent with an included angle between an axis of an inclined hole on the cylindrical surface of a piston rod and an axis of a piston rod, a machining guide hole matched with an inclined hole phi D on the cylindrical surface of the piston rod is designed on the clamp body 1, the guide hole phi D is perpendicular to the horizontal plane on the clamp body 1, the clamp body 1 is provided with an inner hole phi D serving as a radial positioning reference of the piston rod 9, an angle α formed by the axis of the guide hole phi D is consistent with an included angle between the inclined hole on the cylindrical surface of the piston rod 9 and the excircle of the inclined hole on the cylindrical surface of the piston rod 9, the positioning block 2 is fixed on the inclined surface of the clamp body 1 by using a bolt 5, the positioning block 2 is used as a bolt hole on the positioning block 5, the positioning block 2 passes through a bolt hole on the positioning block 2, the bolt hole is connected with a small positioning block 11, the positioning block 2 passes through the bolt hole on the positioning block 2, the bolt is connected with the piston rod through the.
The specific process steps for manufacturing the processing device are as follows:
A. manufacturing the clamp body 1: the specific manufacturing method comprises the following steps:
a. blanking: selecting a stainless steel bar material for blanking; the blanking size is determined according to the structural size of the piston rod to be processed;
b. roughly turning two end faces of the bar;
c. b, two end faces of the bar roughly turned in the step b are ground in a plane mode;
d. cutting the outline dimension of the fixture body 1 in a linear manner;
e. two groups of parallel surfaces are subjected to plane grinding; as shown in fig. 4, two sets of parallel surfaces A, B are plane-ground, and the parallelism of the parallel surfaces of the set a and the set B is 0.02.
f. A vertical machining center is adopted to machine a mounting hole (phi D in figure 4) on the clamp body 1 for mounting the piston rod 9, and a threaded hole is milled, namely a threaded hole for mounting the positioning block 2 on the inclined reference surface of the clamp body 1 by using a bolt 5;
g. drilling a guide hole on the fixture body 1, as shown by phi d in figure 4, and trimming and removing burrs;
h. carrying out heat treatment on the fixture body 1: adopting salt bath quenching HRC 44-48;
j. and removing the oxide skin on the surface of the processed clamp body 1.
B. Manufacturing a positioning block 2: the specific manufacturing method comprises the following steps:
a. blanking: selecting high-quality medium carbon steel for blanking; the blanking size is determined according to the structural size of the piston rod 9 to be processed;
b. as shown in fig. 5 to 8, milling six surfaces of the blank blanked in the step a, and ensuring the surface roughness, parallelism and verticality of the six surfaces;
c. and (3) heat treatment: c, quenching and tempering the blank milled into six sides in the step b;
d. milling a positioning groove and trimming and deburring; as shown in fig. 5 and 6, a positioning groove for installing the piston rod 9 is milled;
e. milling a smooth hole, and processing a threaded hole to meet the size requirement; as shown in fig. 5, 7 and 8, the bores on the P and Q faces of the bore are milled and the 4-M4 threaded hole in fig. 5 is machined.
f. The sharp edge is blunted.
C. Manufacturing the adjusting block 3: the specific manufacturing method comprises the following steps:
a. blanking: selecting high-quality medium carbon steel for blanking;
b. and (3) heat treatment: b, quenching and tempering the material obtained in the step a;
c. turning the outer circle, two end faces and machining threaded holes; as shown in fig. 9 and 10, the outer circle and two end faces are turned to form a disc, and an M5 threaded hole is machined in the center of the disc for connecting with the internal six-cylinder head bolt 5.
d. And (5) grinding two end faces in a plane manner, and trimming and deburring.
D. Manufacturing the supporting block 4: the specific manufacturing method comprises the following steps:
a. blanking: selecting 45 steel for blanking
b. Milling edges to enable the relevant size to meet the requirement;
c. and (3) heat treatment: hardness HRC 28-32;
d. grinding two planes, processing two holes by using a clamp, and trimming and deburring; as shown in FIG. 11, 2-phi 4.5 on the supporting block 4 is used for passing through the internal six-cylinder head screw B6 and then is connected with the positioning block 2.
e. Surface treatment: and bluing.
E. Assembling: the processed positioning block 2 is attached to the jig body 1 by using the bolt 5, the supporting block 4 is fixed to the positioning block 2 by using the bolt 5, and the adjusting block 3 is fixed to the positioning block 2 by using the bolt a 5.
3, processing an inclined hole on the cylindrical surface of the piston rod: the method is characterized in that a manufactured processing device is adopted to add an inclined hole on the cylindrical surface of a piston rod on a common bench drill, and the specific method comprises the following steps:
A. the piston rod and the processing device are installed into a whole, and the piston rod is correctly installed in the processing device according to the positioning relation of the processing device to the piston rod;
B. adjusting the thickness H of the adjusting block 3 according to the dimension L of the inclined hole on the cylindrical surface of the piston rod from the small end face, and then tightly pushing the large end face of the piston rod by using a hexagonal head bolt 8 so as to clamp the large end face in the machining device; the hexagon head bolt 8 is formed by modifying M16 multiplied by 55, and the end face of the bolt is required to be flat;
C. fixing the assembled processing device on a workbench of a common bench drilling machine;
D. the drill bit is used for positioning through a guide hole phi d on the fixture body 1 in the machining device, and then an inclined hole on the cylindrical surface of the piston rod can be machined.
Claims (7)
1. The utility model provides a piston rod face of cylinder inclined hole adds clamping apparatus which characterized in that: the clamp comprises a clamp body (1), a positioning block (2), an adjusting block (3) and a supporting block (4), wherein a surface inclined relative to a horizontal plane is taken as an inclined reference surface on one side above the clamp body (1), a surface parallel to the horizontal plane is taken as a working reference surface on one side above the clamp body (1), an included angle between a normal line of the inclined reference surface and a normal line of the working reference surface is consistent with an included angle between an inclined hole axis on a cylindrical surface of a piston rod and an axis of the piston rod, the positioning block (2) is fixed on the inclined reference surface of the clamp body (1) through a bolt (5), the adjusting block (3) is fixed on the positioning block (2) through the bolt (5), the supporting block (4) is fixed on two sides of the positioning block (2) through the bolt (5), an inner hole for installing the piston rod (9) is arranged on the inclined reference surface, and a guide hole communicated with the inner hole, the guide hole is perpendicular to the working reference surface, and the clamp body is made of alloy steel with the grade of CrWMn.
2. The piston rod cylindrical surface inclined hole machining jig as set forth in claim 1, characterized in that: and a chamfer of not less than 3 multiplied by 45 degrees is arranged at the orifice of the guide hole.
3. The piston rod cylindrical surface inclined hole machining jig as set forth in claim 1, characterized in that: the surface roughness of the inclined reference surface is not more than Ra1.6 mu m.
4. The piston rod cylindrical surface inclined hole machining jig as set forth in claim 1, characterized in that: the surface roughness of the working reference surface is not more than Ra1.6 mu m.
5. The piston rod cylindrical surface inclined hole machining jig as set forth in claim 1, characterized in that: the fixture body is subjected to integral quenching treatment.
6. The piston rod cylindrical surface inclined hole machining jig as set forth in claim 1, characterized in that: the bolt (5) is an inner hexagonal socket head cap screw.
7. The piston rod cylindrical surface inclined hole machining jig as set forth in claim 1, characterized in that: the fit clearance between the inner hole and the piston rod (9) is not more than 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920994900.0U CN210615803U (en) | 2019-06-28 | 2019-06-28 | A jig for machining inclined hole on cylindrical surface of piston rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920994900.0U CN210615803U (en) | 2019-06-28 | 2019-06-28 | A jig for machining inclined hole on cylindrical surface of piston rod |
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| CN210615803U true CN210615803U (en) | 2020-05-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658324A (en) * | 2020-12-17 | 2021-04-16 | 贵州凯星液力传动机械有限公司 | Machining device and machining method for oblique small holes in step roots of shaft parts |
-
2019
- 2019-06-28 CN CN201920994900.0U patent/CN210615803U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658324A (en) * | 2020-12-17 | 2021-04-16 | 贵州凯星液力传动机械有限公司 | Machining device and machining method for oblique small holes in step roots of shaft parts |
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