Mould for machining inclined hole on lathe

Abstract

The utility model discloses a mould for lathe processing inclined holes, which comprises a mould main body and a reducing sleeve detachably mounted in the mould main body, the mould main body is cylindrical and is provided with step inclined holes penetrating through the upper bottom surface of the mould main body, and the step inclined holes comprise a first inclined hole, a second inclined hole and a third inclined hole which are arranged in sequence; the first inclined hole is used for positioning a first outer circle part of a spraying seat, the second inclined hole is used for positioning a reducing sleeve, the third inclined hole is used for positioning a second outer circle part or the reducing sleeve of the spraying seat, a plurality of fastening bolts are arranged on the mould main body in the circumferential direction of the mould main body, and a first clamping part and a second clamping part are arranged on the mould main body. The clamping fixture is reasonable in structural design, the clamping fixture main body and the detachable reducing sleeve are arranged, and the first clamping part and the second clamping part are arranged on the clamping fixture main body, so that the machining of all process contents of the spraying seat can be conveniently completed on a lathe, the application range is wide, and the machining efficiency of the spraying seat can be effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of inclined hole machining technology, specifically relating to a fixture for machining inclined holes on a lathe. Background Technology

[0002] A number of spray nozzles are distributed on the rocker arm of the coal mining machine, which can reduce the dust concentration at the longwall mining face during coal cutting operations. For example... Figure 1 The spray holder shown has a first outer circle with diameter D1 and a second outer circle with diameter D2 arranged coaxially, and an inner hole with diameter D3 and a threaded hole with diameter M arranged coaxially. However, the axes of the first outer circle and the inner hole intersect at a certain angle. Therefore, it is difficult to complete all machining operations on a lathe when processing the spray holder. Thus, a fixture for machining inclined holes on a lathe is needed to solve the above problems and improve the machining efficiency of the spray holder. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a fixture for machining inclined holes on a lathe, which addresses the shortcomings of the prior art. The fixture has a reasonable structural design and is equipped with a main body and a replaceable variable diameter sleeve. The main body of the fixture is provided with a first clamping part and a second clamping part, which facilitates the machining of all processes of the spray seat on the lathe. It has a wide range of applications and can effectively improve the machining efficiency of the spray seat.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a fixture for machining oblique holes on a lathe, characterized in that: it includes a fixture body and a replaceable variable diameter sleeve installed in the fixture body, the fixture body is provided with a stepped oblique hole penetrating the bottom surface of the fixture body, the stepped oblique hole includes a first oblique hole, a second oblique hole and a third oblique hole arranged in sequence, the first oblique hole is used to position the first outer circle of the spray seat, the second oblique hole is used to position the variable diameter sleeve, and the third oblique hole is used to position the second outer circle of the spray seat or the variable diameter sleeve;

[0005] The main body of the fixture is provided with multiple fastening bolts along its circumference for fixing the spray seat;

[0006] The variable diameter sleeve is used to be installed in the second and third inclined holes. The variable diameter sleeve is provided with a positioning hole for positioning the second outer circle of the spray seat. The positioning hole is coaxially arranged with the third inclined hole.

[0007] The main body of the fixture is provided with a first clamping part and a second clamping part that can change the clamping angle of the fixture body.

[0008] The aforementioned fixture for machining oblique holes on a lathe is characterized in that the first oblique hole, the second oblique hole, and the third oblique hole are arranged coaxially.

[0009] The above-mentioned fixture for machining oblique holes on a lathe is characterized in that: the diameter of the first oblique hole is larger than the diameter of the second oblique hole, and the diameter of the second oblique hole is larger than the diameter of the third oblique hole.

[0010] The aforementioned fixture for machining oblique holes on a lathe is characterized in that: the variable diameter sleeve includes a variable diameter sleeve body for installation in a third oblique hole and a protruding edge disposed at one end of the variable diameter sleeve body. The protruding edge is disposed outside one end of the variable diameter sleeve body, and one end face of the protruding edge is flush with one end face of the variable diameter sleeve body. The outer diameter of the variable diameter sleeve body is not greater than the diameter of the third oblique hole, and the end face of the variable diameter sleeve body with the protruding edge is flush with the bottom of the first oblique hole.

[0011] The above-mentioned fixture for machining oblique holes on a lathe is characterized in that: the main body of the fixture is provided with a plurality of threaded holes for fastening bolts, and the threaded holes penetrate the outer wall of the second clamping part and the first oblique hole.

[0012] The above-mentioned fixture for machining oblique holes on a lathe is characterized in that: the first clamping part has an outer circular clamping surface, and the axis of the outer circular clamping surface is coaxially arranged with the first oblique hole.

[0013] The above-mentioned fixture for machining inclined holes on a lathe is characterized in that: the second clamping part has four clamping surfaces, wherein two of the clamping surfaces are first clamping surfaces parallel to the axis of the outer circular clamping surface, and the other two clamping surfaces are second clamping surfaces arranged at an acute angle to the axis of the outer circular clamping surface, and the two second clamping surfaces are parallel to each other.

[0014] This utility model has the following advantages compared with the prior art:

[0015] 1. This utility model, by setting a fixture body and setting a first oblique hole and a third oblique hole on the fixture body, can position the first outer circle and the second outer circle of the spray seat through the first oblique hole and the third oblique hole respectively, thereby facilitating the completion of all the processing contents of the spray seat on the lathe and effectively improving the processing efficiency of the spray seat.

[0016] 2. This utility model, by installing a replaceable variable diameter sleeve inside the main body of the fixture, can replace the corresponding variable diameter sleeve according to the size of different spray seats, thereby adapting to the processing of most spray seats and having a wide range of applications.

[0017] 3. This utility model, by providing a first clamping part and a second clamping part on the main body of the fixture, can adjust the clamping position of the main body of the fixture according to the inclination angle of the inner hole and the threaded hole on the spray seat, thereby realizing the processing of spray seats with two angles.

[0018] 4. This utility model, by setting multiple fastening bolts on the main body of the fixture, can press and fix the spray seat by tightening the fastening bolts, avoiding the shaking of the spray seat caused by the centrifugal force generated by the rotation of the lathe spindle during the processing of the spray seat, and can effectively improve the processing accuracy of the spray seat.

[0019] In summary, the present invention has a reasonable structural design. By setting up a main body of the fixture and a replaceable variable diameter sleeve, and by setting a first clamping part and a second clamping part on the main body of the fixture, it is convenient to complete all the processing of the spray seat on a lathe. It has a wide range of applications and can effectively improve the processing efficiency of the spray seat.

[0020] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the spray holder of this utility model.

[0022] Figure 2 This is a schematic diagram of the main body of the fixture of this utility model.

[0023] Figure 3 This is a schematic diagram showing the assembly relationship between the fixture body and the spray base when the three-jaw chuck of this utility model clamps the first clamping part.

[0024] Figure 4 This is a cross-sectional view showing the assembly relationship between the main body of the fixture and the variable diameter sleeve of this utility model.

[0025] Figure 5 This is a top view showing the assembly relationship between the main body of the fixture and the variable diameter sleeve of this utility model.

[0026] Figure 6 This is a schematic diagram of the variable diameter sleeve of this utility model.

[0027] Figure 7 This is a schematic diagram showing the assembly relationship of the fixture body, the variable diameter sleeve, and the spray seat when the three-jaw chuck of this utility model clamps the first clamping part.

[0028] Figure 8 This is a schematic diagram showing the assembly relationship of the fixture body, the variable diameter sleeve, and the spray seat when the three-jaw chuck of this utility model clamps the second clamping part.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1—Sprayer base; 2—Main body of the fixture; 3—Stepped oblique hole;

[0031] 3-1—First inclined hole; 3-2—Second inclined hole; 3-3—Third inclined hole;

[0032] 4—Reducing sleeve; 4-1—Reducing sleeve body; 4-2—Flange;

[0033] 5—Positioning hole; 6—Outer circular clamping surface; 7—First clamping surface;

[0034] 8—Second clamping surface; 9—Threaded hole. Detailed Implementation

[0035] like Figure 2 and Figure 6 As shown, this utility model includes a fixture body 2 and a replaceable variable diameter sleeve 4 installed inside the fixture body 2. The fixture body 2 is provided with a stepped oblique hole 3 that penetrates the bottom surface of the fixture body 2. The stepped oblique hole 3 includes a first oblique hole 3-1, a second oblique hole 3-2 and a third oblique hole 3-3 arranged in sequence. The first oblique hole 3-1 is used to position the first outer circle of the spray seat 1, the second oblique hole 3-2 is used to position the variable diameter sleeve 4, and the third oblique hole 3-3 is used to position the second outer circle of the spray seat 1 or the variable diameter sleeve 4.

[0036] The main body 2 of the fixture is provided with a plurality of fastening bolts along its circumference for fixing the spray seat 1;

[0037] The variable diameter sleeve 4 is used to be installed in the second inclined hole 3-2 and the third inclined hole 3-3. The variable diameter sleeve 4 is provided with a positioning hole 5 for positioning the second outer circle of the spray seat 1. The positioning hole 5 is coaxially arranged with the third inclined hole 3-3.

[0038] The main body 2 of the fixture is provided with a first clamping part and a second clamping part that can change the clamping angle of the main body 2 of the fixture.

[0039] In actual use, by setting up the fixture body 2 and setting the first oblique hole 3-1 and the third oblique hole 3-3 on the fixture body 2, the first outer circle and the second outer circle of the spray seat 1 can be positioned through the first oblique hole 3-1 and the third oblique hole 3-3 respectively, which facilitates the machining of all processes of the spray seat 1 on the lathe and can effectively improve the machining efficiency of the spray seat.

[0040] It should be noted that by installing a replaceable variable diameter sleeve 4 inside the main body 2 of the fixture, the corresponding variable diameter sleeve 4 can be replaced according to the size of different spray seats 1, thereby adapting to the processing of most spray seats and having a wide range of applications.

[0041] In practice, by providing a first clamping part and a second clamping part on the fixture body 2, the clamping position of the fixture body 2 can be adjusted according to the inclination angle of the inner hole and the threaded hole on the spray seat 1, thereby realizing the processing of the spray seat 1 at two different angles.

[0042] It should be noted that by setting multiple fastening bolts on the main body 2 of the fixture, the spray seat 1 can be pressed and fixed by tightening the fastening bolts, which can prevent the spray seat 1 from shaking due to the centrifugal force generated by the rotation of the lathe spindle during the processing of the spray seat, and can effectively improve the processing accuracy of the spray seat 1.

[0043] In this embodiment, the first oblique hole 3-1, the second oblique hole 3-2, and the third oblique hole 3-3 are arranged coaxially.

[0044] In this embodiment, the diameter of the first oblique hole 3-1 is greater than the diameter of the second oblique hole 3-2, and the diameter of the second oblique hole 3-2 is greater than the diameter of the third oblique hole 3-3.

[0045] In specific implementation, a fourth oblique hole is also provided below the third oblique hole 3-3. The fourth oblique hole penetrates the third oblique hole 3-3 and the top of the fixture body 2. The fourth oblique hole is coaxially arranged with the third oblique hole 3-3. The diameter of the second oblique hole 3-2 is 70mm, the diameter of the third oblique hole 3-3 is 60mm, and the diameter of the fourth oblique hole is 50mm.

[0046] like Figure 2 , Figure 4 and Figure 6 As shown, in this embodiment, the variable diameter sleeve 4 includes a variable diameter sleeve body 4-1 for installation in the third oblique hole 3-3 and a protruding edge 4-2 disposed at one end of the variable diameter sleeve body 4-1. The protruding edge 4-2 is disposed outside one end of the variable diameter sleeve body 4-1, and one end face of the protruding edge 4-2 is flush with one end face of the variable diameter sleeve body 4-1. The outer diameter of the variable diameter sleeve body 4-1 is not greater than the diameter of the third oblique hole 3-3. The end face of the variable diameter sleeve body 4-1 with the protruding edge 4-2 is flush with the bottom of the first oblique hole 3-1.

[0047] In actual use, the reducing sleeve 4 is installed into the third oblique hole 3-3, so that the reducing sleeve 4 and the fixture body 2 form a fixture. The second outer circle size of the spray seat corresponding to this fixture matches the diameter of the positioning hole 5 of the reducing sleeve 4.

[0048] In practice, the outer diameter of the main body 4-1 of the variable diameter sleeve is 60mm, the diameter of the positioning hole 5 is 50mm, and the outer diameter of the protrusion 4-2 is 70mm.

[0049] In this embodiment, the main body 2 of the fixture is provided with a plurality of threaded holes 9 for fastening bolts, and the threaded holes 9 penetrate the outer wall of the second clamping part and the first oblique hole 3-1.

[0050] In actual use, the preferred number of fastening bolts is three.

[0051] In practice, to avoid affecting the clamping, the fastening bolts can be fixed with set screws to ensure the stability of the clamping.

[0052] In this embodiment, the first clamping part has an outer circular clamping surface 6, and the axis of the outer circular clamping surface 6 is coaxially arranged with the first oblique hole 3-1.

[0053] In this embodiment, the second clamping part has four clamping surfaces, two of which are first clamping surfaces 7 parallel to the axis of the outer circular clamping surface 6, and the other two are second clamping surfaces 8 arranged at an acute angle to the axis of the outer circular clamping surface 6, and the two second clamping surfaces 8 are parallel to each other.

[0054] In actual use, such as Figure 3 As shown, when the spray seat is directly machined using the fixture body 2, the size of the second outer circle of the spray seat matches the size of the third oblique hole 3-3. The included angle between the inner hole and the outer circle of the spray seat is equal to the included angle between the axis of the first oblique hole 3-1 and the outer circle clamping surface 6, or the included angle between the inner hole and the outer circle of the spray seat is equal to the included angle between the axis of the first oblique hole 3-1 and the second clamping surface 8.

[0055] In specific implementation, the first clamping surface 7 is parallel to the axis of the first oblique hole 3-1, the axis of the first oblique hole 3-1 intersects the axis of the outer circular clamping surface 6 and the included angle between them is 25°, the included angle between the axis of the first oblique hole 3-1 and the axis of the second clamping surface 8 is 10°, and the included angle between the axis of the outer circular clamping surface 6 and the second clamping surface 8 is 15°.

[0056] In practical use, this utility model, for example Figure 3 , Figure 7 and Figure 8 As shown, a suitable bar stock is used to machine the first clamping surface 7 of the first clamping part, the first clamping surface 7 and the second clamping surface 8 of the second clamping part, and the two end faces of the spray seat 1 on a lathe. Then, the spray seat 1 is removed. According to the included angle between the inner hole and the outer circle of the spray seat 1, the first clamping part of the fixture body 2 is clamped by a three-jaw chuck or the second clamping part of the fixture body 2 is clamped by a four-jaw chuck. According to the specific size of the spray seat 1, the fixture body 2 or a fixture body 2 combined with the reducing sleeve 4 is selected. The spray seat 1 is installed on the fixture and fastened by the fastening bolts. At this time, the axis of the inner hole and the threaded hole of the spray seat 1 coincides with the axis of the machine tool spindle. At this time, the turning of the inner hole and the threaded hole of the spray seat 1 is completed.

[0057] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A fixture for machining oblique holes on a lathe, characterized in that: The device includes a fixture body (2) and a replaceable variable diameter sleeve (4) installed inside the fixture body (2). The fixture body (2) is provided with a stepped oblique hole (3) that penetrates the bottom surface of the fixture body (2). The stepped oblique hole (3) includes a first oblique hole (3-1), a second oblique hole (3-2), and a third oblique hole (3-3) arranged in sequence. The first oblique hole (3-1) is used to position the first outer circle of the spray seat (1), the second oblique hole (3-2) is used to position the variable diameter sleeve (4), and the third oblique hole (3-3) is used to position the second outer circle of the spray seat (1) or the variable diameter sleeve (4). The main body (2) of the fixture is provided with a plurality of fastening bolts along its circumference for fixing the spray seat (1); The variable diameter sleeve (4) is used to be installed in the second inclined hole (3-2) and the third inclined hole (3-3). The variable diameter sleeve (4) is provided with a positioning hole (5) for positioning the second outer circle of the spray seat (1). The positioning hole (5) is coaxially arranged with the third inclined hole (3-3). The fixture body (2) is provided with a first clamping part and a second clamping part that can change the clamping angle of the fixture body (2).

2. A fixture for machining inclined holes on a lathe according to claim 1, characterized in that: The first oblique hole (3-1), the second oblique hole (3-2), and the third oblique hole (3-3) are arranged coaxially.

3. A fixture for machining oblique holes on a lathe according to claim 2, characterized in that: The diameter of the first oblique hole (3-1) is greater than the diameter of the second oblique hole (3-2), and the diameter of the second oblique hole (3-2) is greater than the diameter of the third oblique hole (3-3).

4. A fixture for machining inclined holes on a lathe according to claim 1, characterized in that: The variable diameter sleeve (4) includes a variable diameter sleeve body (4-1) for installation in the third oblique hole (3-3) and a protruding edge (4-2) disposed at one end of the variable diameter sleeve body (4-1). The protruding edge (4-2) is disposed outside one end of the variable diameter sleeve body (4-1). One end face of the protruding edge (4-2) is flush with one end face of the variable diameter sleeve body (4-1). The outer diameter of the variable diameter sleeve body (4-1) is not greater than the diameter of the third oblique hole (3-3). The end face of the variable diameter sleeve body (4-1) with the protruding edge (4-2) is flush with the bottom of the first oblique hole (3-1).

5. A fixture for machining oblique holes on a lathe according to claim 1, characterized in that: The main body (2) of the fixture is provided with a plurality of threaded holes (9) for fastening bolts, and the threaded holes (9) penetrate the outer side wall of the second clamping part and the first oblique hole (3-1).

6. A fixture for machining inclined holes on a lathe according to claim 2, characterized in that: The first clamping part has an outer circular clamping surface (6), and the axis of the outer circular clamping surface (6) is coaxially arranged with the first oblique hole (3-1).

7. A fixture for machining inclined holes on a lathe according to claim 6, characterized in that: The second clamping part has four clamping surfaces, two of which are first clamping surfaces (7) parallel to the axis of the outer circular clamping surface (6), and the other two are second clamping surfaces (8) arranged at an acute angle to the axis of the outer circular clamping surface (6), and the two second clamping surfaces (8) are parallel to each other.

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