Vertical lathe machining tool for conical thin-walled parts and vertical lathe

Abstract

The utility model belongs to the technical field of part machining. In order to solve the problems that an existing conical thin-wall part is difficult to clamp and prone to deformation during machining, the utility model discloses a vertical turning tool for the conical thin-wall part and a vertical lathe, the tool comprises a supporting frame, a bearing face C, a bearing face D, a bearing face C, a bearing face C, a bearing face C, a bearing face D, a bearing face C and a bearing face D, and the bearing face C and the bearing face D are matched with the large end face and the small end face of the conical thin-wall part. The conical thin-wall part is supported by the bearing plate; the pressing plate is configured to generate pressing force enabling the conical thin-wall part to be fixed to the supporting frame when the conical thin-wall part is machined; and the fastener is connected with the pressing plate and can be linked with the pressing plate to be close to the conical thin-wall part so as to generate pressing force for fixing the conical thin-wall part on the supporting frame. Positioning is conducted through the large end face of the conical thin-wall part, pressing is conducted through the pressing plate, so that quick installation of the part can be achieved, meanwhile, the small end face of the part is borne through the bearing face D, and the rigidity of the part can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of parts processing technology, specifically relating to a vertical lathe machining fixture and a vertical lathe for machining tapered thin-walled parts. Background Technology

[0002] Currently, there are significant difficulties in clamping rotary cone sleeve parts during machining, especially for low-toughness, thin-walled cone sleeve parts, because the small end of the part has a cone-shaped structure, which makes clamping difficult when machining the inner hole.

[0003] When machining such parts, thin-walled conical parts are prone to deformation when clamped, and because the shape of thin-walled conical parts is conical, they cannot be clamped with general-purpose jigs (three-jaw chucks or four-jaw chucks).

[0004] Therefore, it is necessary to design a vertical machining fixture for tapered thin-walled parts to solve the existing defects and problems in machining thin-walled tapered sleeve parts, such as clamping difficulties, easy deformation, damage to parts, and impact on the quality of processed products and production efficiency. Utility Model Content

[0005] In view of the existing problems of difficult clamping and easy deformation of conical thin-walled parts, this utility model discloses a vertical lathe machining fixture and a vertical lathe for conical thin-walled parts. By using the large end face of the conical thin-walled part for positioning and improving the rigidity of the conical thin-walled part during machining, the rapid clamping of the conical thin-walled part is realized, and the deformation of the conical thin-walled part during machining is avoided, which affects the quality of the machined product.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A vertical machining fixture for tapered thin-walled parts includes a support frame with bearing surfaces C and D that mate with the large and small end faces of the tapered thin-walled part to support the part; a pressure plate for contacting and positioning the part; and fasteners connected to the pressure plate, which can move the pressure plate closer to the tapered thin-walled part to make contact between the pressure plate and the part, thereby fixing the part to the support frame.

[0008] The bearing surface D has multiple discontinuous arc surfaces.

[0009] In one of the technical solutions disclosed in this utility model, the support frame is provided with a bearing plate; the end face of the bearing plate away from the support frame is provided with a plurality of circumferentially distributed bosses; the top surface of the bosses forms the bearing surface D.

[0010] In one of the technical solutions disclosed in this utility model, the bearing plate is connected to the support frame through a vibration damping mechanism.

[0011] In one of the technical solutions disclosed in this utility model, the vibration damping mechanism includes:

[0012] Several connecting rods distributed in a centrally symmetrical manner;

[0013] Several elastic elements, one end of which is connected to the bearing plate and the other end of which is connected to the support frame;

[0014] The support plate is movably mounted on the connecting rod.

[0015] In one of the technical solutions disclosed in this utility model, a guide shaft is also included; the guide shaft is disposed at the center of the area surrounded by the plurality of connecting rods; wherein, the area surrounded by the bosses on the bearing plate is provided with a through hole that is clearance-fitted with the guide shaft.

[0016] In one of the technical solutions disclosed in this utility model, the connecting rod and the support frame are connected by threads and fixed by nuts.

[0017] In one of the technical solutions disclosed in this utility model, the fastener is a stud nut structure.

[0018] In one of the technical solutions disclosed in this utility model, a limiting hole is provided in the middle of the pressure plate, and the inner diameter of the limiting hole is smaller than the outer diameter of the large end face of the tapered thin-walled part. When the limiting hole is configured such that the pressure plate presses the part, the center line of the limiting hole and the outer conical surface of the tapered thin-walled part are coaxial.

[0019] In one of the technical solutions disclosed in this utility model, a positioning groove is formed on the bearing surface C of the support frame, extending upward along the outer circumference of the large end face of the tapered thin-walled part.

[0020] This utility model also discloses a vertical lathe, including a vertical lathe machining fixture for tapered thin-walled parts as described in any of the above technical solutions; wherein the support frame is connected to the rotary table of the vertical lathe.

[0021] As can be seen from the above description, the beneficial effects of this utility model are:

[0022] 1. Rotational freedom of the tapered thin-walled part in the horizontal direction through the bearing surface C. and vertical displacement degrees of freedom The positioning groove wall restricts the horizontal displacement freedom of part 4. Subsequently, the fasteners connect to the pressure plate, causing the pressure plate to press the part tightly, thereby restricting the vertical displacement freedom of the part. This allows for the clamping and fixing of parts, enabling rapid clamping of parts. It is simple to operate and easy to manufacture. At the same time, the positioning and installation of machining fixtures on the rotary worktable can be achieved by using the groove wall of the round positioning groove.

[0023] 2. By supporting the B-side of part 4 with a bearing plate, the rigidity of the part can be improved, and problems such as chipping caused by vibration during processing due to thin walls and poor rigidity can be avoided. At the same time, the bearing surface D is composed of multiple discontinuous arc surfaces, which can reduce the contact area between the bearing surface D and the B-side of the part, so as to avoid the phenomenon that the B-side of the part is uneven and difficult to press with the bearing surface.

[0024] 3. A vibration damping mechanism is provided to provide a preload to the bearing plate to buffer and dampen the axial force generated during turning, thereby offsetting the axial force, avoiding deformation and vibration of the parts, and thus improving the rigidity of the parts during turning. At the same time, a guide shaft with clearance fit is provided at the center of the bearing plate to prevent the bearing plate from swaying left and right during turning, which would affect the normal progress of turning. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] Figure 2 This is a schematic diagram of the structure of the support plate of this utility model.

[0028] Reference numerals: 1-Support frame; 11-Bearing plate; 111-Boss; 112-Connecting ear; 12-Vibration damping mechanism; 121-Connecting rod; 122-Elastic element; 13-Guide shaft; 14-Positioning groove; 2-Pressure plate; 3-Fastener; 31-Stud; 32-Nut; 4-Part. Detailed Implementation

[0029] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0035] This utility model discloses a vertical machining fixture for thin-walled parts, the structure of which is shown in the attached figure. Figure 1 and attached Figure 2 As shown, the system includes a support frame 1, a pressure plate 2, and fasteners 3. Taking the machining of a typical rotary conical thin-walled part (hereinafter referred to as part 4) as an example, when machining its inner hole, the support frame 1 is connected and fixed to the rotary table of the vertical lathe to support part 4; subsequently, the pressure plate 2 is used by the fasteners 3 to restrict the outer periphery of part 4, thereby completing the clamping and fixing of part 4. In this embodiment, surface A represents the lower plane (i.e., the large end face) of part 4, surface B represents the upper plane (i.e., the small end face) of part 4, and the inner hole is machined on surface B.

[0036] Specifically, the support frame 1 has bearing surfaces C and D that respectively mate with the inner sides of surfaces A and B of part 4 (i.e., the side facing surface A) for bearing part 4. Fastener 3 is connected to pressure plate 2 and can be linked to move pressure plate 2 closer to or further away from part 4. When pressure plate 2 contacts part 4, pressure plate 2 applies a force towards support frame 1 to restrict part 4, thus stably clamping it onto support frame 1, thereby achieving clamping and fixing of part 4 for internal hole machining on surface B by a vertical lathe.

[0037] By supporting surface B of part 4 with bearing surface D, the rigidity of part 4 during processing can be improved, and problems such as chipping caused by vibration during processing due to thin wall and poor rigidity can be avoided.

[0038] Specifically, the bearing surface D is composed of multiple discontinuous arc surfaces, which reduces the contact area between the bearing surface D and the B surface of part 4, thereby avoiding the phenomenon that the unevenness of the B surface of part 4 makes it difficult to press against the bearing surface D.

[0039] In some embodiments, the support frame 1 is provided with a bearing plate 11, and a plurality of circumferentially distributed bosses 111 are provided on the end face of the bearing plate 11 away from the support frame 1, and the top surface of the bosses 111 forms the bearing surface D mentioned above.

[0040] Considering that the axial force generated during internal machining can cause deformation and vibration of part 4, thus affecting the normal progress of the entire turning process, in this embodiment, the other end face of the support plate 11 is connected to the support frame 1 by a vibration damping mechanism 12. Thus, during operation, the vibration damping mechanism 12 provides a preload to the support plate 11 to buffer and dampen the axial force generated during turning, thereby counteracting the axial force, preventing deformation and vibration of part 4, and ultimately improving the rigidity of part 4 during turning.

[0041] Specifically, the vibration damping mechanism 12 includes a number of centrally symmetrically distributed connecting rods 11 and a number of elastic elements 122. The bearing plate 11 is provided with connecting ears 112 corresponding to the connecting rods 121, and the connecting ears 112 are provided with mating holes for the connecting rods 121 to pass through. One end of the elastic element 122 abuts against the bearing surface C, and the other end abuts against the bearing plate 11.

[0042] In this embodiment, the elastic element 122 is a spring, which is sleeved on the connecting rod 121 in a one-to-one correspondence. There are four connecting rods 121, which are fixed to the bearing surface C by threaded nuts.

[0043] In some embodiments, considering that the bearing plate 11 is prone to shaking during processing after the vibration damping structure 12 is provided, which affects the processing, in this embodiment, a through hole is provided in the central area of ​​the bearing plate 11 (i.e., the area surrounded by the boss 111), and a guide shaft 13 with clearance fit with the through hole is provided on the bearing surface C, so as to avoid the bearing plate 11 shaking during turning processing, thereby reducing the parallelism requirements of the bearing surface C and the surface of the part 4B.

[0044] In this embodiment, to reduce the weight of the guide shaft 13, the interior of the guide shaft 13 is designed as a hollow cavity.

[0045] In some embodiments, the fastener 3 includes a stud 31 and a nut 32. The pressure plate 2 and the support frame 1 have several mating threaded holes for assembling the stud 31 and securing it with the nut 32. Using a stud and nut for fixing is simple to operate, easy to manufacture, and provides good self-locking performance.

[0046] Understandably, to shorten the adjustment time, an open washer fitted on the stud 31 can be installed above the pressure plate 2.

[0047] In some embodiments, a limiting hole is provided in the middle of the pressure plate 2, passing through the pressure plate 2; the limiting hole is configured such that when the pressure plate 2 presses the part, it is coaxial with the axis of the outer conical surface of the part 4, and the inner diameter of the limiting hole is configured to be smaller than the outer diameter of the A surface of the part 4, so as to ensure that the pressure plate 2 can press the part 4. It is understood that the shape and size of the limiting hole can be designed according to the actual situation of the part, and this embodiment is not limited thereto.

[0048] As a specific implementation of the above embodiment, an annular positioning groove 14 extends upward along the edge of surface A of part 4 on the bearing surface C of the support frame 1, thereby restricting the periphery of part 4 through the groove wall of the positioning groove 14. Correspondingly, one side of the pressure plate 2 is provided with a stepped boss that mates with the positioning groove 14. This not only improves the clamping stability of part 4, but also enables the centering and correction of the support frame 1 and the rotary table through the groove wall of the positioning groove 14, thereby realizing the positioning and installation of the support frame 1 on the rotary table.

[0049] The support frame 1 has several mounting holes along its circumference that mate with the rotary worktable for installing studs. It is then connected and fixed to the rotary worktable of the vertical lathe by nuts. Its structure is simple, easy to disassemble and install, and easy to manufacture.

[0050] As can be seen from the above description, the working principle and beneficial effects of this utility model embodiment are as follows:

[0051] First, connect and fix the support frame 1 to the rotary table of the vertical lathe, and then measure the rotational freedom of part 4 in the horizontal direction through the bearing surface C. and vertical displacement degrees of freedom The positioning groove restricts the horizontal displacement freedom of part 4. Subsequently, the fastener 3 is used to activate the pressure plate 2, which presses the part 4 tightly, thereby restricting the vertical displacement freedom of the part 4. This completes the clamping and fixing of part 4; as for the vertical rotational degree of freedom... From the perspective of processing requirements, there are no restrictions. Even if the circumferential positions of each workpiece in the vertical direction are different, it will not affect the processing requirements; its operation is simple and easy to manufacture; furthermore, by supporting the B surface of part 4 through the bearing plate 11, the rigidity of part 4 can be improved, and problems such as chipping caused by vibration during the processing of part 4 due to thin walls and poor rigidity can be avoided; at the same time, the bearing surface D is composed of multiple discontinuous arc surfaces, which can reduce the contact area between the bearing surface D and the B surface of part 4, so as to avoid the phenomenon that the B surface of part 4 is uneven and difficult to press with the bearing surface D; finally, a vibration damping mechanism 12 is provided to provide a preload force to the bearing plate 11 to buffer and dampen the axial component force generated during turning, thereby offsetting the axial component force, avoiding deformation and vibration of part 4, and thus improving the rigidity of part 4 during turning; at the same time, a guide shaft 13 with clearance fit with the bearing plate 11 is provided at the center of the bearing plate 11, which can prevent the bearing plate 11 from swaying left and right during turning, affecting the normal progress of turning.

[0052] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A vertical lathe processing tool for tapered thin-walled parts. It is characterized in that include: A support frame having a bearing surface C and a bearing surface D matched with the large end surface and the small end surface of the tapered thin-walled part to bear the tapered thin-walled part; A pressing plate, used for contacting and positioning the tapered thin-walled part; A fastener connected to the pressing plate, capable of moving the pressing plate closer to the tapered thin-walled part so that the pressing plate contacts the tapered thin-walled part and fixes the tapered thin-walled part on the support frame; Wherein, the bearing surface D has a plurality of discontinuous arc surfaces.

2. The vertical lathe processing tool for tapered thin-walled parts according to claim 1, It is characterized in that A bearing plate is provided on the support frame; a plurality of circumferentially distributed bosses are provided on the end surface of the bearing plate away from the support frame; and the top surface of the bosses forms the bearing surface D.

3. The vertical lathe processing tool for tapered thin-walled parts according to claim 2, It is characterized in that The bearing plate is connected to the support frame via a vibration reduction mechanism.

4. The vertical lathe processing tool for tapered thin-walled parts according to claim 3, It is characterized in that The vibration reduction mechanism comprises: A plurality of connecting rods distributed symmetrically around the center; A plurality of elastic members, one end of which is connected to the bearing plate, and the other end of which is connected to the support frame; Wherein, the bearing plate is movably mounted on the connecting rod.

5. The vertical lathe processing tool for tapered thin-walled parts according to claim 4, It is characterized in that It also includes a guide shaft; the guide shaft is arranged at the center of the area surrounded by the plurality of connecting rods; wherein a through hole which is in clearance fit with the guide shaft is provided in the area surrounded by the bosses on the bearing plate.

6. The vertical lathe processing tool for tapered thin-walled parts according to claim 4, It is characterized in that The connecting rod and the supporting frame are connected by threads and fixed by nuts.

7. The vertical lathe processing tool for tapered thin-walled parts according to claim 1, It is characterized in that The fastener is a stud nut structure.

8. The vertical lathe processing tool for tapered thin-walled parts according to claim 1, It is characterized in that A limiting hole penetrating through the pressing plate is provided in the middle of the pressing plate; Wherein, the inner diameter of the limiting hole is smaller than the outer diameter of the large end surface of the tapered thin-walled part; The limiting hole is configured so that when the pressing plate presses the conical thin-walled part, the limiting hole and the axis center line of the outer conical surface of the conical thin-walled part are coaxial.

9. The vertical lathe processing tool for tapered thin-walled parts according to claim 1 or 8, It is characterized in that A positioning groove is formed on the bearing surface C of the support frame and extends upward along the outer circumference of the large end surface of the conical thin-walled part; wherein the pressure plate is provided with a stepped boss that cooperates with the positioning groove.

10. A vertical lathe, It is characterized in that It comprises a vertical lathe processing tool for tapered thin-walled parts as described in any one of claims 1 to 9; wherein the support frame is connected to the rotating worktable of the vertical lathe.

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