Horizontal lathe clamp for thin-wall long cylinder part

Abstract

The utility model belongs to the technical field of machining devices, and particularly relates to a horizontal lathe clamp for a thin-wall long cylinder part, which comprises a supporting ring, a central hole is arranged on the supporting ring, a tension ring is arranged in the central hole, a gland is detachably connected onto the supporting ring, and the gland is used for compressing the tension ring to enable the tension ring to be tightly attached to the inner wall of the supporting ring and the outer wall of a workpiece. A through hole allowing the cutter bar to enter is formed in the gland; the problems that when an inner hole of a thin-wall long cylinder part is machined through an existing horizontal lathe, deformation is prone to occurring, and the workpiece machining quality is poor are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing devices, and in particular relates to a horizontal lathe clamp used for thin-walled long cylindrical parts. Background Art

[0002] The horizontal lathe is a machine tool that mainly uses a turning tool to turn the rotating workpiece. Drills, reamer drills, reamers, taps, dies and knurling tools can also be used on the lathe for corresponding processing. When processing long cylindrical workpieces, it is also necessary to use a center stand to fix the workpiece, and the tool bar enters the inner hole for turning processing. However, when using the above method to process thin-walled workpieces, the workpiece is prone to deformation, and the deformation amount is large. The roundness of the workpiece after processing is 0.3-0.5mm, the processing quality of the workpiece is poor, and the dimensional accuracy is difficult to guarantee. Utility Model Content

[0003] The utility model aims to provide a horizontal lathe clamp for thin-walled long cylindrical parts, so as to solve the problem that deformation is easy to occur and the workpiece processing quality is poor when the inner hole of the thin-walled long cylindrical parts is processed by the existing horizontal lathe.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A horizontal lathe clamp for thin-walled long cylindrical parts includes a support ring, a center hole is provided on the support ring, a tensioning ring is provided in the center hole, a pressure cover is detachably connected to the support ring, the pressure cover is used to press the tensioning ring so that the tensioning ring is tightly attached to the inner wall of the support ring and the outer wall of the workpiece, and the pressure cover is provided with a through hole for the tool rod to enter.

[0006] Furthermore, the center hole includes a circular hole and a tapered hole that are interconnected, and a step is formed between the large-diameter ends of the circular hole and the tapered hole; the tensioning ring is a hollow frustum structure, and the shapes of the tensioning ring and the tapered hole fit each other.

[0007] Furthermore, the gland is provided with an extrusion protrusion, the outer diameter of which is larger than the maximum aperture of the tapered hole and smaller than the aperture of the circular hole, and the extrusion protrusion can press the tensioning ring into the tapered hole.

[0008] Furthermore, the tapers of the tapered hole and the tensioning ring are both 1:8-1:7.

[0009] Furthermore, the tensioning ring is made of 42CrMo material.

[0010] Furthermore, the support ring is evenly distributed with a plurality of positioning holes in a circumferential direction, and the gland is detachably connected with a plurality of positioning pieces, and the positioning pieces cooperate with the positioning holes to connect the gland and the support ring together.

[0011] Compared with the prior art, the utility model has the following beneficial technical effects:

[0012] When processing the inner hole of a thin-walled long cylindrical part, first use other processing equipment to process a reference outer circle on the workpiece, and the roundness of the reference outer circle is controlled within 0.015mm. Then, the support ring is installed on the reference outer circle of the workpiece, and the tensioning ring is placed in the tapered hole of the support ring. Then, the pressure cover is buckled on the support ring, and the pressure cover and the support ring are connected as a whole through the positioning piece and the positioning hole. The extrusion protrusion of the pressure cover presses the tensioning ring in the tapered hole, so that the tensioning ring fits tightly with the workpiece and the support ring. Then, the outer wall of the support ring is clamped by the center frame to realize the inner hole processing of the workpiece. Since the roundness of the reference outer circle of the workpiece before clamping is qualified, the workpiece and the support ring are tightly connected as a whole through the tensioning ring during clamping, and the connection strength is high. During the process of the tool rod processing the inner hole, the tensioning ring and the support ring clamp the reference outer circle of the workpiece, and the center frame does not directly contact the workpiece, which can limit the deformation of the workpiece when processing the inner hole. The processing process is reliable, and the roundness of the workpiece after processing is less than 0.03mm, which effectively improves the processing quality of the workpiece and ensures the dimensional accuracy of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of clamping the utility model and the workpiece;

[0014] Figure 2 for Figure 1 A magnified schematic diagram of center A. DETAILED DESCRIPTION

[0015] The following is further described in detail through specific implementation methods:

[0016] The reference numerals in the drawings of the specification include:

[0017] Support ring 1, round hole 11, tapered hole 12, tensioning ring 2, pressure cover 3, through hole 31, extrusion protrusion 32, positioning piece 4, workpiece 5. Example

[0018] like Figure 1 and 2As shown, a lying car clamp for thin-walled long cylindrical parts comprises a support ring 1, a center hole is provided on the support ring 1, the center hole comprises a circular hole 11 and a tapered hole 12 which are interconnected, a step is formed between the circular hole 11 and the large-diameter end of the tapered hole 12; a tension ring 2 is provided in the tapered hole 12, the tension ring 2 is made of 42CrMo material, the tension ring 2 is a hollow truncated cone structure, the tension ring 2 is in accordance with the shape of the tapered hole 12, and the tapers of the tapered hole 12 and the tension ring 2 are both 1:8~1:7; a pressure cover 3 is detachably connected to the support ring 1, and a through hole is formed on the pressure cover 3 31 and an extrusion protrusion 32, the through hole 31 can be used for the tool rod of the horizontal car to enter, the outer diameter of the extrusion protrusion 32 is larger than the maximum aperture of the tapered hole 12 and smaller than the aperture of the circular hole 11, the extrusion protrusion 32 can press the tightening ring 2 in the tapered hole 12, so that the tightening ring 2 is close to the inner wall of the support ring 1 and the outer wall of the workpiece 5; the support ring 1 is circumferentially evenly provided with a plurality of positioning holes, and the pressure cover 3 is detachably connected with a plurality of positioning members 4, the positioning holes in this embodiment are threaded holes, and the positioning members 4 are screws, and the pressure cover 3 can be connected to the support ring 1 through the cooperation of the threaded holes and the screws.

[0019] When processing the inner hole of a thin-walled long cylindrical part, first use other processing equipment to process a reference outer circle on the workpiece 5, and the roundness of the reference outer circle is controlled within 0.015mm. Then install the support ring 1 on the reference outer circle of the workpiece 5, put the tension ring 2 into the tapered hole 12 of the support ring 1, and then snap the gland 3 onto the support ring 1, and cooperate with the positioning member 4 with the positioning hole to connect the gland 3 and the support ring 1 into a whole. The extrusion protrusion 32 of the gland 3 presses the tension ring 2 into the tapered hole 12, so that the tension ring 2 fits tightly with the workpiece 5 and the support ring 1, and then use the center The center frame clamps the outer wall of the support ring 1 to realize the inner hole processing of the workpiece 5; since the roundness of the reference outer circle of the workpiece 5 before clamping is qualified, the workpiece 5 and the support ring 1 are tightly connected into a whole through the tensioning ring 2 during clamping, and the connection strength is high. During the process of the tool rod processing the inner hole, the tensioning ring 2 and the support ring 1 clamp the reference outer circle of the workpiece 5, and the center frame does not directly contact the workpiece 5, which can limit the deformation of the workpiece 5 when processing the inner hole. The processing process is reliable, and the roundness of the workpiece 5 after processing is less than 0.03mm, which effectively improves the processing quality of the workpiece 5 and ensures the dimensional accuracy of the workpiece 5.

[0020] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A lying car clamp for thin-walled long cylindrical parts, characterized in that: It includes a support ring, a center hole is provided on the support ring, a tensioning ring is provided in the center hole, a pressure cover is detachably connected to the support ring, the pressure cover is used to press the tensioning ring so that the tensioning ring is tightly attached to the inner wall of the support ring and the outer wall of the workpiece, and the pressure cover is provided with a through hole for the tool rod to enter.

2. A lying clamp for thin-walled long cylindrical parts according to claim 1, characterized in that: The central hole comprises a circular hole and a conical hole which are interconnected, and a step is formed between the large-diameter ends of the circular hole and the conical hole; the tightening ring is in a hollow frustum structure, and the shapes of the tightening ring and the conical hole match each other.

3. A lying clamp for thin-walled long cylindrical parts according to claim 2, characterized in that: The gland is provided with an extrusion protrusion, the outer diameter of which is larger than the maximum aperture of the tapered hole and smaller than the aperture of the round hole, and the extrusion protrusion can press the tensioning ring into the tapered hole.

4. A lying clamp for thin-walled long cylindrical parts according to claim 2, characterized in that: The tapers of the tapered hole and the tightening ring are both 1:8-1:

7.

5. A lying clamp for thin-walled long cylindrical parts according to any one of claims 1 to 4, characterized in that: The tensioning ring is made of 42CrMo material.

6. A lying clamp for thin-walled long cylindrical parts according to claim 3, characterized in that: The support ring is evenly distributed with a plurality of positioning holes in the circumferential direction, and the gland is detachably connected with a plurality of positioning pieces, and the positioning pieces cooperate with the positioning holes to connect the gland and the support ring together.

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