Clamp device for machining shell part on machine tool

Abstract

The invention provides a clamp device for machining a shell part on a machine tool, and belongs to the technical field of machining. Comprising a pressing ring and a mandrel, the shape of the pressing ring is determined according to the shape of an inner cavity of the shell part, it is guaranteed that the pressing ring is coaxially installed in the shell part, a pressing claw is arranged on the pressing ring, when the pressing ring is matched in the inner cavity of the shell part, the pressing claw is matched with an opening in the shell part to press the end face of the shell part, and the pressing ring is coaxially and fixedly connected with the mandrel. The pressing ring with the pressing claws is combined with the shell part, the pressing end face of the shell part is fixed to the mandrel through the pressing ring, then the mandrel is fixedly connected with the lathe spindle, and therefore it is guaranteed that machining of the shell part is completed under the working condition that the end face is pressed, machining deformation of the thin-wall shell part is avoided, the machining precision of the thin-wall shell part is guaranteed, and machining efficiency is improved. The clamp is simple in structure and convenient to manufacture, and machining efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a clamp device used for processing shell parts on a machine tool, which is suitable for processing various shell parts. Background Art

[0002] With the development of science and technology, the processing capability of equipment is getting stronger and stronger, and the precision of parts processing is getting higher and higher. However, for some thin-walled shell parts, refer to Figure 3 As shown, due to the thin wall, it is easy to deform during the processing, which greatly affects the processing accuracy of the workpiece and reduces the processing efficiency. In order to ensure the processing accuracy of thin-walled shell parts and make the processing operation simpler. It is necessary to propose a fixture suitable for processing thin-walled shell parts on machine tools. Summary of the invention

[0003] The technical problem solved by the present invention is as follows: A clamping device for processing shell parts on a machine tool is provided. The present invention aims to solve the problem that thin-walled shell parts are easily deformed during processing, and thus a pressure ring with pressure claws is manufactured, so that the shell parts can be processed under the condition of end face clamping, thereby avoiding processing deformation of thin-walled shell parts, ensuring the processing accuracy of thin-walled shell parts, and improving processing efficiency.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A clamp device for processing shell parts on a machine tool comprises a pressure ring and a mandrel. The shape of the pressure ring is determined according to the shape of the inner cavity of the shell part and ensures that the pressure ring is coaxially installed inside the shell part. A pressure claw is provided on the pressure ring. When the pressure ring is fitted in the inner cavity of the shell part, the pressure claw fits into the opening on the shell part to press the end face of the shell part. The pressure ring is coaxially fixedly connected to the mandrel.

[0006] To further define the above scheme, according to the inner cavity structure of the shell part, the pressure ring is made into a disc-shaped structure, the axial thickness of the pressure ring is smaller than the inner cavity depth of the shell part, and the outer diameter of the pressure ring is smaller than the inner cavity diameter of the shell part.

[0007] To further limit the above scheme, openings are evenly distributed around the end surface of the shell part, and correspondingly, pressure claws are evenly distributed around the pressure ring. The outer end diameter of the pressure claws is larger than the outer diameter of the opening on the shell part to ensure that the pressure ring presses the shell part in the axial direction.

[0008] As a further limitation of the above scheme, the openings around the shell part are symmetrically arranged, and correspondingly, two pressing claws are arranged around the pressing ring, and the two pressing claws are symmetrically arranged.

[0009] To further limit the above scheme, after the shell part and the pressure ring are combined, the pressure ring is fixedly connected to the central shaft by a fixing screw, a central circular hole is provided in the center of the shell part, a countersunk hole is provided in the center of the pressure ring for the fixing screw to pass through, and a threaded hole is provided in the center of the central shaft for screwing with the fixing screw.

[0010] As a further limitation of the above solution, a connecting shaft is coaxially provided at the rear end of the spindle.

[0011] Further limitation of the above scheme, the pressure ring and the mandrel are made of aluminum alloy

[0012] The advantages of the present invention compared with the prior art are:

[0013] 1. This scheme aims to solve the problem that thin-walled shell parts are easily deformed during processing, and manufactures a pressing ring with a pressing claw. The pressing ring with a pressing claw is combined with the shell part, and the pressing ring can press the end face of the shell part to fix it on the mandrel, and then the mandrel and the lathe spindle are fixedly connected, so as to ensure that the shell part is processed under the condition of the end face being pressed, avoiding the deformation of the thin-walled shell parts during processing, ensuring the processing accuracy of the thin-walled shell parts, and the fixture structure is simple, easy to manufacture, and greatly improves the processing efficiency;

[0014] 2. This solution can make the processing of thin-walled shell parts simpler, greatly improve the processing efficiency of shell parts, the fixture structure is simple and easy to use, and the manufacturing cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an exploded view of the assembly when the present invention is used;

[0016] Figure 2 This is a schematic diagram of the assembly structure when the present invention is used;

[0017] Figure 3 It is a structural schematic diagram of the shell parts in the present invention;

[0018] Figure 4 It is a schematic diagram of the structure of the pressure ring in the present invention;

[0019] Figure 5 It is a structural schematic diagram of the central axis of the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0022] See also Figure 1-5 , details of the embodiments of the present invention.

[0023] Example: See Figure 1-2 As shown, a clamping device for machining shell parts on a machine tool comprises a pressure ring 3 and a spindle 4. The shape of the pressure ring 3 is determined according to the shape of the inner cavity of the shell part 1 and ensures that the pressure ring 3 is coaxially installed inside the shell part 1. A pressure claw 3-1 is provided on the pressure ring 3. When the pressure ring 3 is fitted in the inner cavity of the shell part 1, the pressure claw 3-1 is adapted to the opening 1-1 on the shell part 1 to press the shell part 1 from the end face. The pressure ring 3 is coaxially fixedly connected to the spindle 4.

[0024] Preferably, the pressure ring 3 and the mandrel 4 are made of aluminum alloy.

[0025] In a specific implementation: see Figure 3-4 As shown, the shape and size of the pressing ring 3 are adjusted according to the shape of the shell part 1, and the shape of the pressing ring is determined according to the opening of the shell part 1. Figure 3 The shell part structure shown in FIG. 1 is implemented, according to the inner cavity structure of the shell part 1, the pressure ring 3 is made into a disc-shaped structure, see FIG. Figure 4 As shown, the axial thickness of the pressure ring 3 is smaller than the inner cavity depth of the housing part 1 , and the outer diameter of the pressure ring 3 is smaller than the inner cavity diameter of the housing part 1 .

[0026] See also Figure 3 The shell part structure shown in the figure is, specifically, the shell part 1 is evenly provided with openings 1-1 around the end surface, and correspondingly, the pressure ring 3 is evenly provided with pressure claws 3-1 around the periphery, and the outer end diameter of the pressure claws 3-1 is larger than the outer diameter of the opening 1-1 on the shell part 1 to ensure that the pressure ring 3 presses the shell part 1 in the axial direction.

[0027] Specifically, the openings 1 - 1 around the shell part 1 are symmetrically arranged, and correspondingly, two pressing claws 3 - 1 are arranged around the pressing ring 3, and the two pressing claws 3 - 1 are symmetrically arranged.

[0028] In a specific embodiment: after the shell part 1 and the pressure ring 3 are combined, the pressure ring 3 is fixedly connected to the central shaft 4 by the fixing screw 2, the center of the shell part 1 is provided with a central circular hole 1-2, and the screwdriver tightens the fixing screw through the central circular hole 1-2; the center of the pressure ring 3 is provided with a countersunk hole 3-2 for the fixing screw 2 to pass through, and the center of the central shaft 4 is provided with a threaded hole 4-1 for screwing with the fixing screw 2.

[0029] The above-mentioned structure is implemented by making a threaded hole on the mandrel and a countersunk hole on the pressure ring, and the shell part and the mandrel are fixedly connected by screws and the pressure ring, so as to ensure that the shell part is processed under the condition of end face compression, and the processing deformation of the thin-walled shell part is avoided. The rear end of the mandrel 4 is coaxially provided with a connecting shaft 4-2, and the connecting shaft 4-2 is used to connect with the main shaft of the machine tool.

[0030] The processing of the housing parts by using the fixture includes the following steps:

[0031] 1) Make a pressing ring fixture with two pressing jaws, so that the thickness of the pressing ring is smaller than the inner cavity depth of the shell part being processed, and the two pressing jaws are slightly larger than the outer diameter of the opening on the shell part in the diameter direction to ensure that the pressing ring can press the shell part in the axial direction.

[0032] 2) Make a mandrel with a threaded hole and securely connect the mandrel to the lathe spindle.

[0033] 3) Make the two pressing claws of the pressing ring pass through the opening of the shell part, and then use the fixing screws to press the pressing ring and the mandrel to ensure that the shell part and the mandrel are firmly connected.

[0034] 4) After the shell is processed, loosen the fixing screws and remove the shell parts from the pressure ring.

[0035] The present invention combines a pressing ring with a pressing claw with a shell part. The pressing ring can press the end face of the shell part to fix it on the mandrel, and then fix the mandrel and the lathe spindle, thereby ensuring that the shell part is processed under the condition of end face compression, avoiding processing deformation of thin-walled shell parts, ensuring the processing accuracy of thin-walled shell parts, and the fixture has a simple structure and is easy to manufacture, which can greatly improve the processing efficiency.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fixture device for machining housing parts on a machine tool, characterized in that: The invention comprises a pressure ring (3) and a core shaft (4). The shape of the pressure ring (3) is determined according to the shape of the inner cavity of the shell part (1) and ensures that the pressure ring (3) is coaxially installed inside the shell part (1). The pressure ring (3) is provided with a pressure claw (3-1). When the pressure ring (3) is matched in the inner cavity of the shell part (1), the pressure claw (3-1) is adapted to the opening (1-1) on the shell part (1) to press the shell part (1). The pressure ring (3) is coaxially fixedly connected with the core shaft (4).

2. The fixture device for machining housing parts on a machine tool according to claim 1, characterized in that: According to the inner cavity structure of the shell part (1), the pressure ring (3) is made into a disc-shaped structure, the axial thickness of the pressure ring (3) is smaller than the inner cavity depth of the shell part (1), and the outer diameter of the pressure ring (3) is smaller than the inner cavity diameter of the shell part (1).

3. The fixture device for machining housing parts on a machine tool according to claim 2, characterized in that: The shell part (1) is evenly provided with openings (1-1) around the end surface, and correspondingly, the pressing ring (3) is evenly provided with pressing claws (3-1) around the periphery, and the outer end diameter of the pressing claws (3-1) is larger than the outer diameter of the openings (1-1) on the shell part (1), thereby ensuring that the pressing ring (3) presses the shell part (1) in the axial direction.

4. The fixture device for machining housing parts on a machine tool according to claim 3, characterized in that: The openings (1-1) around the shell part (1) are symmetrically arranged, and correspondingly, two pressing claws (3-1) are arranged around the pressing ring (3), and the two pressing claws (3-1) are symmetrically arranged.

5. The fixture device for machining housing parts on a machine tool according to claim 1, characterized in that: After the shell part (1) and the pressure ring (3) are combined, the pressure ring (3) is fixedly connected to the spindle (4) via a fixing screw (2); a central circular hole (1-2) is provided at the center of the shell part (1); a countersunk hole (3-2) is provided at the center of the pressure ring (3) for the fixing screw (2) to pass through; and a threaded hole (4-1) is provided at the center of the spindle (4) for screwing with the fixing screw (2).

6. The fixture device for machining housing parts on a machine tool according to claim 1, characterized in that: A connecting shaft (4-2) is coaxially arranged at the rear end of the spindle (4).

7. The fixture device for machining housing parts on a machine tool according to claim 1, characterized in that: The pressure ring (3) and the mandrel (4) are made of aluminum alloy material.

Images