Cambered surface clamping turning tool and cambered surface workpiece clamping device
By using annular ring walls and arc-side positioning steps in arc-side clamping workpiece, combining clamping gaps and deformation gaps, and using fasteners for screws and nuts, the outer circular surface of the part is narrow and the end surface is arc-like. The problem of clamping stability of the surface achieves stable clamping of the workpiece and high-precision machining.
Patent Information
- Application Number
- CN202420274001.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-04
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-02-04
AI Technical Summary
When the outer circular surface of a certain type of part is narrow and the end surface is arc-shaped, the clamping of the three-jaw chuck of the car is unstable, resulting in offset or fall off during processing, affecting the processing accuracy.
Design a arc-surface clamping workpiece, using an annular ring wall and arc-surface positioning steps, through uniform clamping gaps and deformation gaps, and using screws and nut fasteners to make the ring wall occur in the deformation part. Deformation, maintain uniform stress on the workpiece and prevent deviation and fall off.
It effectively improves the clamping stability of the workpiece, avoids deviation and fall off during the processing process, and ensures that the processing accuracy meets the requirements.
Smart Images
Figure CN222344810U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of parts processing, in particular to a curved surface clamping lathe tool and a curved surface workpiece clamping device. Background Art
[0002] The outer cylindrical surface of a certain type of parts is very narrow, and the end faces of such parts are arc surfaces. When clamping such parts with a three-jaw chuck for CNC lathes, the clamping stability is poor, and the parts often deviate or even fall off during processing, resulting in the processing accuracy of such parts failing to meet the requirements. Utility Model Content
[0003] The main purpose of the utility model is to provide a curved surface clamping lathe tooling, which aims to avoid the problem of workpiece deviation and falling off during machining due to poor clamping stability when the outer cylindrical surface of the workpiece is narrow and the end surface is a curved surface.
[0004] In order to achieve the above-mentioned purpose, the utility model provides a curved surface clamping lathe tool, comprising:
[0005] The annular wall comprises an inner annular abutting surface for abutting against the outer circumferential surface of the workpiece and an arc surface positioning step for abutting against the arc surface at the end of the workpiece;
[0006] A plurality of deformation parts are evenly arranged on the annular wall, wherein the deformation part includes a clamping gap penetrating the annular wall and a deformation gap arranged on the arc surface positioning step; and
[0007] The fastener is arranged in the clamping gap and is used to make the inner walls on both sides of the clamping gap move relative to each other so that the annular wall contracts at multiple deformation parts to clamp the workpiece.
[0008] Preferably, the fastener comprises a screw, the annular wall is provided with a through hole located at the clamping gap, the through hole penetrates the inner walls on both sides of the clamping gap, the screw is inserted into the through hole and connected to a nut to tighten the clamping gap.
[0009] Preferably, the deformation gap is opened from the arc surface positioning step to the inner ring abutment surface.
[0010] Preferably, when the axis of the end arc surface of the workpiece is parallel to the annular wall, the arc surface positioning step abuts against the highest point of the arc surface convex part of the end arc surface facing the arc surface positioning step.
[0011] Preferably, one clamping gap is provided, and two deformation gaps are provided, and one clamping gap and two deformation gaps are distributed on the annular wall in an equilateral triangle shape.
[0012] Preferably, one clamping gap is provided, and four deformation gaps are provided, and the one clamping gap and the four deformation gaps are distributed on the annular wall in a regular pentagonal shape.
[0013] Preferably, two clamping gaps are provided and two deformation gaps are provided, and the two clamping gaps and the two deformation gaps are arranged at intervals and distributed on the annular wall in a square shape.
[0014] Preferably, the arc surface positioning step is arranged on one side of the annular wall, and a side of the arc surface positioning step facing the other side of the annular wall is used for abutting against an end arc surface of a workpiece.
[0015] Preferably, when the end arc surface of the workpiece is a bowl-shaped arc protruding from the outer circumference to the center, the arc surface positioning step abuts against the outer ring position of the end arc surface.
[0016] The utility model also provides a curved surface workpiece clamping device, which comprises a three-jaw chuck and a curved surface clamping lathe tooling.
[0017] The technical solution of the utility model is to set an annular wall in an annular shape as an arc surface clamping and turning tool, and make the inner ring surface of the annular wall form an inner ring abutting surface abutting against the outer cylindrical surface of the workpiece, set an arc surface positioning step at one end of the annular wall, make the arc surface positioning step abut against the end arc surface of the workpiece, and set uniformly distributed clamping gaps and deformation gaps as deformation parts, and use screws and nuts as fasteners to make the arc surface clamping and turning tool deform at the deformation part position, so that all parts of the workpiece are evenly stressed, and the workpiece is clamped in a manner of keeping the center of the circle unchanged, and the arc surface clamping and turning tool is clamped by a three-jaw chuck when the workpiece is clamped, so as to avoid the problem of workpiece displacement and falling off during machining due to poor clamping stability when the outer cylindrical surface of the workpiece is narrow and the end face is an arc surface. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0019] Figure 1 It is an assembly diagram of the arc surface clamping lathe tooling 1 of the utility model;
[0020] Figure 2 This is an exploded view of the arc surface clamping lathe tooling of the utility model;
[0021] Figure 3 It is a structural schematic diagram of an embodiment of the arc surface clamping lathe tooling of the utility model;
[0022] Figure 4 for Figure 3 Sectional view at AA;
[0023] Figure 5 for Figure 3 Cross-sectional view at BB;
[0024] Figure 6 It is a structural schematic diagram of another embodiment of the arc surface clamping lathe tooling of the utility model;
[0025] Figure 7 It is a structural schematic diagram of another embodiment of the arc surface clamping lathe tooling of the utility model;
[0026] Figure 8 It is a structural schematic diagram of another embodiment of the arc surface clamping lathe tooling of the utility model.
[0027] Description of Figure Numbers:
[0028] Label name Label name 100 Arc clamping lathe tooling 60 perforation 10 Ring wall 70 Screw 20 Inner ring abutment surface 200 Workpiece 30 Arc positioning step 210 Outer circle 40 Deformation gap 220 end cambered surface 50 Clamping clearance
[0029] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0032] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0033] The outer cylindrical surface of a certain type of parts is very narrow, and the end faces of such parts are arc surfaces. When clamping such parts with a three-jaw chuck for CNC lathes, the clamping stability is poor, and the parts often deviate or even fall off during processing, resulting in the processing accuracy of such parts failing to meet the requirements.
[0034] To this end, the utility model proposes a curved surface clamping lathe tooling, which aims to avoid the problem of workpiece deviation and falling off during machining due to poor clamping stability when the outer cylindrical surface of the workpiece is narrow and the end face is a curved surface.
[0035] Reference Figures 1 to 8 , Figure 1 It is an assembly diagram of the arc surface clamping lathe tooling 1 of the utility model; Figure 2 This is an exploded view of the arc surface clamping lathe tooling of the utility model; Figure 3 It is a structural schematic diagram of an embodiment of the arc surface clamping lathe tooling of the utility model; Figure 4 for Figure 3 Sectional view at AA; Figure 5 for Figure 3 Cross-sectional view at BB; Figure 6 It is a structural schematic diagram of another embodiment of the arc surface clamping lathe tooling of the utility model; Figure 7 It is a structural schematic diagram of another embodiment of the arc surface clamping lathe tooling of the utility model; Figure 8 It is a structural schematic diagram of another embodiment of the arc surface clamping lathe tooling of the utility model.
[0036] In the embodiment of the utility model, the arc surface clamping lathe tool 100 includes a ring wall 10, a plurality of deformation parts and fasteners; Figure 1 As shown, the annular wall 10 includes an inner annular abutting surface 20 for abutting the outer cylindrical surface 210 of the workpiece 200 and an arc surface positioning step 30 for abutting the end arc surface 220 of the workpiece 200. A plurality of deformation portions are evenly arranged on the annular wall 10. The deformation portion includes a clamping gap 50 penetrating the annular wall 10 and a deformation gap 40 arranged in the arc surface positioning step 30. The clamping gap 50 is provided with a fastener, and the fastener is used to make the inner walls on both sides of the clamping gap 50 move relative to each other so that the annular wall 10 contracts at a plurality of deformation portions to clamp the workpiece 200.
[0037] The technical solution of the utility model is to set an annular ring wall 10 as an arc surface clamping and counting lathe tool 100, and make the inner ring surface of the annular wall 10 form an inner ring abutting surface 20 abutting against the outer cylindrical surface 210 of the workpiece 200, and set an arc surface positioning step 30 at one end of the annular wall 10, so that the arc surface positioning step 30 abuts against the end arc surface 220 of the workpiece 200, and set a plurality of uniformly distributed deformation parts on the annular wall 10, and use fasteners to make the arc surface clamping and counting lathe tool 100 deform at the position of the deformation part, so that the arc surface clamping and counting lathe tool 100 keeps the center of the circle unchanged when clamping the workpiece 200, and when the workpiece 200 is clamped, each part is evenly stressed, so as to avoid the situation that the outer cylindrical surface 210 of the workpiece 200 is narrow and the clamping stability is poor when the end face is an arc surface, thereby avoiding the problem of displacement and falling off of the workpiece 200 during processing.
[0038] Preferably, the fastener comprises a screw 70, Figure 1 , Figure 2 As shown, the annular wall 10 is provided with a through hole 60 located in the clamping gap 50 , and the through hole 60 penetrates the inner walls on both sides of the clamping gap 50 . The screw 70 is inserted into the through hole 60 and connected with a nut to tighten the clamping gap 50 .
[0039] In this embodiment, the screw rod 70 has a nut. When the screw rod 70 is inserted into the through hole 60, the screw end of the screw rod 70 is exposed, and the nut end is limited outside the through hole 60. A nut is installed on the exposed screw end of the screw rod 70, and the nut is tightened to make the inner walls on both sides of the clamping gap 50 approach each other, and at the same time drive the inner walls on both sides of the remaining deformation parts to approach each other, so that the annular wall 10 is deformed as a whole to clamp the workpiece 200.
[0040] Furthermore, in conjunction with reference Figure 1 , Figure 2 As shown, the deformation gap 40 is opened from the arc surface positioning step 30 to the inner ring abutment surface 20. Specifically, the deformation gap 40 is opened to the inner ring abutment surface 20, so that the annular wall 10 has a smaller wall thickness at the position of the inner ring abutment surface 20, so that the annular wall 10 at the position of the inner ring abutment surface 20 is more likely to elastically deform, which is beneficial to clamping the workpiece 200.
[0041] In this embodiment, combined with reference Figure 1 , Figure 3 , Figure 4 , Figure 5As shown, when the axis of the end arc surface 220 of the workpiece 200 is parallel to the annular wall 10, the arc surface positioning step 30 abuts against the highest point of the arc surface convex part of the end arc surface 220 toward the arc surface positioning step 30. Specifically, at this time, the end arc surface 220 of the workpiece 200 is formed by bulging from both sides of the outer cylindrical surface 210 to the middle, and the axis of the end arc surface 220 is perpendicular to the axis of the workpiece 200, so that when the axis of the end arc surface 220 is parallel to the annular wall 10, the highest point of the arc surface of the end arc surface 220 toward the arc surface positioning step 30 abuts against the arc surface positioning step 30.
[0042] In another embodiment, in combination with reference Figure 8 As shown, when the end arc surface 220 of the workpiece 200 is a bowl-shaped arc protruding from the outer circumference to the center, the arc surface positioning step 30 abuts against the outer ring position of the end arc surface 220. Specifically, at this time, the end arc surface 220 of the workpiece 200 is formed by protruding from the outer circumference to the center of the outer cylindrical surface 210, and the axis of the end arc surface 220 is coaxially arranged with the axis of the workpiece 200, so that the axis of the end arc surface 220 is coaxial with the axis of the annular wall 10, so that the outer ring of the end arc surface 220 in the outer circle is abutted against one circle of the arc surface positioning step 30.
[0043] Preferably, one clamping gap 50 is provided, and two deformation gaps 40 are provided. Figure 3 As shown, one clamping gap 50 and two deformation gaps 40 are distributed in the shape of an equilateral triangle on the annular wall 10. Specifically, when three deformation parts are provided, one clamping gap 50 is provided in the three deformation parts, and the arc surface clamping number turning tool 100 is clamped by fasteners in the clamping gap 50, so that the arc surface clamping number turning tool 100 abutting against the workpiece 200 at multiple locations can clamp the workpiece 200.
[0044] In another embodiment, the clamping gap 50 is provided with one, and the deformation gap 40 is provided with four. Figure 6 As shown, one clamping gap 50 and four deformation gaps 40 are distributed in the annular wall 10 in a regular pentagonal shape. Specifically, when there are five deformation parts, one clamping gap 50 and four deformation gaps 40 can be set in the five deformation parts, and the curved surface clamping number turning tool 100 is clamped by the fasteners in the clamping gap 50, so that it is deformed in five deformation parts, so that when the curved surface clamping number turning tool 100 clamps the workpiece 200, the deformation unit is smaller, so that the deformation is more uniform, and the clamping effect on the workpiece 200 is better.
[0045] In another embodiment, two clamping gaps 50 are provided, and two deformation gaps 40 are provided. Figure 7As shown, two clamping gaps 50 and two deformation gaps 40 are arranged at intervals and distributed in a square shape on the annular wall 10. Specifically, when there are four deformation parts, two clamping gaps 50 and two deformation gaps 40 can be arranged in the four deformation parts, so that the annular wall 10 is divided into two parts disconnected from the two clamping gaps 50, and the arc surface clamping number turning tool 100 is clamped by fasteners in the two clamping gaps 50, so that it is deformed in four deformation parts, and the distance for transmitting the deformation from the clamping gap 50 to the deformation gap 40 is shorter, so that the deformation transmission effect is better, so that each deformation part is deformed more evenly, and the workpiece 200 is subjected to more uniform force when clamped.
[0046] Preferably, the arc surface positioning step 30 is provided on one side of the annular wall 10. Figure 1 , Figure 4 As shown, the side of the arc surface positioning step 30 facing the other side of the annular wall 10 is used to abut against the end arc surface 220 of the workpiece 200. Specifically, the arc surface positioning step 30 is a ring-shaped protrusion formed on one side of the annular wall 10, so that the inner diameter of the side of the annular wall 10 provided with the arc surface positioning step 30 is smaller than the inner diameter of the other side thereof, so that the workpiece 200 cannot completely pass through the annular wall 10, and the end arc surface 220 can abut against the side of the arc surface positioning step 30 facing the workpiece 200, and cooperate with the inner ring abutting surface 20 that can abut against the outer cylindrical surface 210, so that the workpiece 200 has multiple clamping points, so that it can be effectively clamped.
[0047] The utility model also proposes a curved surface workpiece clamping device, which includes a three-jaw chuck for clamping the outer periphery of a curved surface clamping lathe tool 100 and a curved surface clamping lathe tool 100. The specific structure of the curved surface clamping lathe tool 100 refers to the above-mentioned embodiment. Since the curved surface workpiece clamping device adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.
[0048] The technical solution of the utility model is to set a ring wall 10 with a ring shape as a curved surface clamping number turning tool 100, and make the inner ring surface of the ring wall 10 form an inner ring abutting surface 20 abutting against the outer cylindrical surface 210 of the workpiece 200, set a curved surface positioning step 30 at one end of the ring wall 10, make the curved surface positioning step 30 abut against the end curved surface 220 of the workpiece 200, and set a uniformly distributed clamping gap 50 and a deformation gap 40 on the ring wall 10 as a deformation part, and use a screw 70 and a nut as a fastener to penetrate The workpiece 200 is clamped in a clamping gap 50 so that the arc surface clamping lathe tool 100 is deformed at the deformation part, so that various parts of the workpiece 200 are evenly stressed, and the workpiece 200 is clamped in a manner of keeping the center of the circle unchanged. When the workpiece 200 is clamped, the arc surface clamping lathe tool 100 is clamped by a three-jaw chuck, so that the workpiece 200 is fixed on the lathe, thereby avoiding the problem of poor clamping stability when the outer cylindrical surface 210 of the workpiece 200 is narrow and the end face is an arc surface, which causes the workpiece 200 to deviate and fall off during processing.
[0049] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A curved surface clamping lathe tool, characterized in that: include: The annular wall comprises an inner annular abutting surface for abutting against the outer circumferential surface of the workpiece and an arc surface positioning step for abutting against the arc surface at the end of the workpiece; A plurality of deformation parts are evenly arranged on the annular wall, wherein the deformation parts include a clamping gap penetrating the annular wall and a deformation gap arranged on the arc surface positioning step; as well as, The fastener is arranged in the clamping gap and is used to make the inner walls on both sides of the clamping gap move relative to each other so that the annular wall contracts at multiple deformation parts to clamp the workpiece.
2. The curved surface clamping lathe tooling as claimed in claim 1, characterized in that: The fastener comprises a screw rod, the annular wall is provided with a through hole located at the clamping gap, the through hole penetrates the inner walls on both sides of the clamping gap, the screw rod is inserted into the through hole and connected with a nut to tighten the clamping gap.
3. The curved surface clamping lathe tooling as claimed in claim 1, characterized in that: The deformation gap is opened from the arc surface positioning step to the inner ring abutment surface.
4. The curved surface clamping lathe tooling as claimed in claim 1, characterized in that: When the axis of the end arc surface of the workpiece is parallel to the annular wall, the arc surface positioning step abuts against the highest point of the arc surface convex part of the end arc surface facing the arc surface positioning step.
5. The curved surface clamping lathe tooling as claimed in claim 1, characterized in that: There is one clamping gap, and there are two deformation gaps. The one clamping gap and the two deformation gaps are distributed on the annular wall in an equilateral triangle shape.
6. The curved surface clamping lathe tooling as claimed in claim 1, characterized in that: There is one clamping gap, and there are four deformation gaps. The one clamping gap and the four deformation gaps are distributed on the annular wall in a regular pentagon shape.
7. The curved surface clamping lathe tooling as claimed in claim 1, characterized in that: There are two clamping gaps and two deformation gaps, and the two clamping gaps and the two deformation gaps are arranged at intervals and distributed on the annular wall in a square shape.
8. The arc surface clamping lathe tooling as described in any one of claims 1 to 7, characterized in that: The arc surface positioning step is arranged on one side of the annular wall, and a side of the arc surface positioning step facing the other side of the annular wall is used for abutting against the end arc surface of the workpiece.
9. The curved surface clamping lathe tooling as claimed in claim 1, characterized in that: When the end arc surface of the workpiece is a bowl-shaped arc protruding from the outer circumference to the center, the arc surface positioning step abuts against the outer ring position of the end arc surface.
10. A curved workpiece clamping device, characterized in that: It comprises a three-jaw chuck and a curved surface clamping lathe tool as described in any one of claims 1 to 9.