Turning fixture base and modular fixture
By designing a modular turning fixture base and fixture, the problem of frequent tooling and fixture switching is solved, enabling rapid clamping of workpieces of different diameters, improving processing efficiency and accuracy, and reducing the defect rate.
Patent Information
- Application Number
- CN202520105814.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-17
AI Technical Summary
When processing customized parts with a wide variety of products in small batches and complex processing techniques, frequent tooling and fixture changes consume a lot of time, and insufficient worker experience leads to a high defect rate.
Design a turning fixture base and modular fixture. Through the combination of base flange, tapered body, pull sleeve, pull shaft and pull claw, the workpiece can be quickly clamped. The modular design of internal and external clamping fixtures can adapt to the clamping requirements of workpieces with different diameters.
It reduces tooling and fixture change time, improves clamping efficiency, avoids defective products caused by lack of experience, and meets customers' requirements for processing accuracy and cycle time.
Smart Images
Figure CN223749079U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to turning fixture field especially a turning fixture base and modular fixture. BACKGROUND
[0002] With more and more customized parts processing of multi-variety small batch and complex processing technology, customers' requirements for part manufacturing cycle, processing precision and manufacturing cycle are more and more strict, and according to these requirements of customers combined with the present processing technology predicament, i. e. switching of tooling fixture needs to be carried out for a small batch of special parts many times. However, switching of tooling fixture occupies most of the whole processing time, and with the lack of human resources in the factory at present, the lack of experience of workers in debugging tooling fixture leads to defective products. SUMMARY
[0003] The utility model aims at solving above-mentioned problem, provides a kind of turning fixture base and modular fixture, solve above-mentioned problem.
[0004] A kind of turning fixture base, including: base flange, taper body, draw sleeve, pull shaft and draw claw, the upper fixed connection of base flange and taper body, the inner wall sliding connection of draw sleeve and base flange and / or taper body, the pull shaft and draw claw are inserted into draw sleeve and are slidingly connected with draw sleeve, the pull shaft is connected with draw claw and drives draw claw to move in up-down direction, the inner side of taper body is formed with the inner taper hole of the diameter greater than the diameter of the upper of lower, the draw sleeve is formed with the second inner protrusion inwards.
[0005] Further, the draw sleeve is formed with second stepped hole, the diameter of the second stepped hole is greater than the diameter away from the direction of inner taper hole, the second inner protrusion is located the inner wall of the second stepped hole close to the direction of inner taper hole.
[0006] Further, the draw claw is located above the pull shaft, and the upper end of the draw claw is located at the large-diameter hole of the second stepped hole.
[0007] Further, the draw sleeve is located between the inner cavity of base flange and the containing hole of taper body, a first step surface is formed between the inner taper hole and the containing hole, a first inner protrusion is formed on the inner side of the inner cavity of base flange, and the first step surface and the first inner protrusion jointly limit the displacement of the draw sleeve in up-down direction.
[0008] Further, the lower part of the draw sleeve is formed with external thread, the lower part of the pull shaft is formed with external thread; further comprising first bolt, the base flange is formed with a plurality of first stepped holes, and the first bolt passes through the first stepped hole.
[0009] Further, the tapering body is formed with a second threaded hole in the radial direction of the inner taper hole, a third bolt is threadedly connected with the second threaded hole, and the end of the third bolt is inserted into the inner taper hole;
[0010] Further, the tapering body is formed with a second threaded hole in the radial direction of the inner taper hole, a third bolt is threadedly connected with the second threaded hole, and the end of the third bolt is inserted into the inner taper hole;
[0011] A modular fixture using a turning fixture base, further comprising an inner clamp fixture and an outer clamp fixture, and the turning fixture base is connected with any one of the inner clamp fixture and the outer clamp fixture.
[0012] Further, the outer clamp fixture is a first rubber chuck, the outer taper surface of the first rubber chuck is in contact with the inner taper surface of the tapering body, the first rubber chuck is formed with a first annular groove, and the second inner protrusion is inserted into the first annular groove.
[0013] Further, the inner clamp fixture comprises a tapering mandrel, a threaded pull shaft, a pull rod and a second rubber chuck, the tapering mandrel is above the tapering body, the tapering mandrel is fixedly and detachably connected with the tapering body, the upper end of the tapering mandrel is formed with a tapering shaft, the second rubber chuck is sleeved outside the tapering shaft, the inner taper surface of the second rubber chuck is in contact with the outer taper surface of the tapering shaft, the enlarged portion of the pull rod is in contact with the top surface of the second rubber chuck, the pull rod passes downward through the second rubber chuck, the pull rod is fixed in position relative to the threaded pull shaft, the lower outer side surface of the threaded pull shaft is formed with a second annular groove, and the upper portion of the pull claw is inserted into the second annular groove.
[0014] Further, the inner clamp fixture further comprises a first threaded pull shaft and a check ring, the check ring is fixedly connected with the lower end of the inner cavity of the tapering mandrel, the first threaded pull shaft is located in the inner cavity of the tapering mandrel, and the upper and lower ends of the first threaded pull shaft are threadedly connected with the pull rod and the threaded pull shaft respectively; the inner clamp fixture further comprises a support disc, the support disc is located at the upper end of the tapering mandrel and is fixedly connected with the upper end of the tapering mandrel, the upper end of the support disc is formed with an annular protrusion, and the lower end of the second rubber chuck is located inside the annular protrusion.
[0015] The utility model discloses have the following advantages: when the turning fixture base is connected with the inner clamp fixture, the workpiece with large diameter and inner hole can be clamped; when the turning fixture base is connected with the outer clamp fixture, the workpiece with small diameter can be clamped; the turning fixture base does not need to be replaced, only the corresponding fixture needs to be replaced, different workpieces can be clamped, time is saved, clamping efficiency is improved, and the defective product caused by insufficient experience in debugging the tooling fixture is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only one embodiment of the present application, and for those skilled in the art, other drawings can be obtained from the provided drawings without creative labor.
[0017] Figure 1 : the sectional view of the turning fixture base;
[0018] Figure 2 : the sectional view of the modular fixture one;
[0019] Figure 3 : the sectional view of the modular fixture two. DETAILED DESCRIPTION
[0020] The present application will be further described below in conjunction with the drawings and examples:
[0021] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0022] In the description of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0023] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation of the present application.
[0024] As Figure 1As shown, a turning clamp base comprises a base flange 1, a taper body 2, a pull sleeve 3, a pull shaft 4 and a pull claw 5, the base flange 1 is fixedly connected with the taper body 2, the pull sleeve 3 is slidably connected with the inner wall of the base flange 1 and / or the taper body 2, the pull shaft 4 and the pull claw 5 are inserted into the pull sleeve 3 and are slidably connected with the pull sleeve 3, the pull shaft 4 is connected with the pull claw 5 and drives the pull claw 5 to move in the up-down direction, the taper body 2 is formed with an inner taper hole 21 with a diameter larger at the top than at the bottom, and the pull sleeve 3 is formed with a second inner protrusion 31.
[0025] When installed, the base flange 1 is fixedly connected with the spindle of the lathe, and the pull sleeve 3 and the pull shaft 4 are respectively connected with the built-in oil cylinder pull rod of the machine tool.
[0026] Further, the pull sleeve 3 is formed with a second stepped hole 32, the diameter of the second stepped hole 32 close to the inner taper hole 21 is larger than the diameter of the second stepped hole 32 away from the inner taper hole 21, thereby providing sufficient space for the first rubber chuck 7, and the second inner protrusion 31 is located on the inner wall of the second stepped hole 32 close to the inner taper hole 21.
[0027] Further, the pull claw 5 is located above the pull shaft 4, and the upper end of the pull claw 5 is located at the large-diameter hole of the second stepped hole 32. It should be noted that the pull claw 5 is a prior art, and the pull claw 5 comprises a plurality of metal blocks clamped by a spring.
[0028] Further, the pull sleeve 3 is located between the inner cavity of the base flange 1 and the accommodating hole 22 of the taper body 2, a first step surface is formed between the inner taper hole 21 and the accommodating hole 22, a first inner protrusion 12 is formed on the inner side of the inner cavity of the base flange 1, and the first step surface and the first inner protrusion 12 jointly limit the displacement of the pull sleeve 3 in the up-down direction.
[0029] Further, the lower part of the pull sleeve 3 is formed with external threads, the lower part of the pull shaft 4 is formed with external threads, and the pull sleeve 3 and the pull shaft 4 are fixedly connected with the oil cylinder pull rod through threaded connection.
[0030] Further, a second bolt 14 is further included, the second bolt 14 passes through the taper body 2 and is threadedly connected with the base flange 1.
[0031] Further, a first bolt 13 is further included, the base flange 1 is formed with a plurality of first stepped holes 11, the first bolt 13 passes through the first stepped holes 11 and is threadedly connected with the spindle of the lathe, thereby fixing the base flange 1 with the spindle of the lathe.
[0032] Further, a third bolt 23 is provided, the tapering body 2 is formed with a second threaded hole 26 which is located in the radial direction of the inner taper hole 21, the third bolt 23 is screwed into the second threaded hole 26, and the end of the third bolt 23 is inserted into the inner taper hole 21; thus, when the first rubber chuck 7 is connected, the first rubber chuck 7 is prevented from rotating.
[0033] Further, a first threaded part 25 is provided, the tapering body 2 is formed with a first threaded hole 24, the first threaded part 25 is screwed into the first threaded hole 24, and the side of the pull sleeve 3 is formed with a groove in the vertical direction, the first threaded part 25 is inserted into the groove of the pull sleeve 3, thus preventing the pull sleeve 3 from rotating.
[0034] As shown in Figures 1 to 3 a modular fixture using a turning fixture base, further comprising an inner clamp fixture and an outer clamp fixture, the turning fixture base is connected with any one of the inner clamp fixture and the outer clamp fixture, and only one fixture is fixed with the turning fixture base when in use. When the turning fixture base is fixed with the inner clamp fixture, the inner hole of the workpiece is in contact with the inner clamp fixture; when the turning fixture base is fixed with the outer clamp fixture, the outer side of the workpiece is in contact with the outer clamp fixture.
[0035] Further, as shown in Figure 2 the outer clamp fixture is a first rubber chuck 7, the outer taper surface of the first rubber chuck 7 is in contact with the inner taper surface of the tapering body 2, the first rubber chuck 7 is formed with a first annular groove 71, and the second inner protrusion 31 is inserted into the first annular groove 71. It should be noted that the first rubber chuck 7 is a prior art, and the first rubber chuck 7 comprises a plurality of rubber and metal blocks, and a through hole is formed in the middle.
[0036] When installing, the diameter of the first rubber chuck 7 is compressed, the lower end of the first rubber chuck 7 is inserted into the second stepped hole 32 until the second inner protrusion 31 enters the first annular groove 71. Then, the first rubber chuck 7 is loosened, the first rubber chuck 7 is reset by rebounding outward, and the outer taper surface of the first rubber chuck 7 is in contact with the inner taper surface of the inner taper hole 21.
[0037] When clamping the workpiece, the workpiece is placed into the through hole of the first rubber chuck 7, the oil cylinder pull rod drives the pull sleeve 3 to move downward, the second inner protrusion 31 of the pull sleeve 3 pulls the first annular groove 71, thereby driving the first rubber chuck 7 to move downward. During the downward movement of the first rubber chuck 7, the diameter of the first rubber chuck 7 is reduced under pressure, thereby reducing the inner diameter of the through hole, and the inner wall of the first rubber chuck 7 is in contact with the outer side of the workpiece, thereby fixing the workpiece with the first rubber chuck 7.
[0038] Further, as shown in Figure 3As shown, the inner clamping fixture comprises a tapered mandrel 61, a threaded pull shaft 64, a pull rod 65 and a second rubber chuck 66. The tapered mandrel 61 is located above the tapered body 2 and is fixedly and detachably connected with the tapered body 2. The tapered mandrel 61 has a tapered shaft 611 formed at the upper end thereof. The second rubber chuck 66 is sleeved outside the tapered shaft 611 and has an inner tapered surface in contact with an outer tapered surface of the tapered shaft 611. The enlarged portion of the pull rod 65 is in contact with the top surface of the second rubber chuck 66. The pull rod 65 passes through the second rubber chuck 66 downward and is fixed in position relative to the threaded pull shaft 64. The threaded pull shaft 64 has a second annular groove 641 formed at the lower outer side thereof. The upper portion of the pull claw 5 is inserted into the second annular groove 641.
[0039] Further, the inner clamping fixture further comprises a first threaded pull shaft 62 and a check ring 63. The check ring 63 is fixedly connected with the lower end of the inner cavity of the tapered mandrel 61. The first threaded pull shaft 62 is located in the inner cavity of the tapered mandrel 61 and is threadedly connected with the pull rod 65 and the threaded pull shaft 64 at the upper and lower ends thereof respectively. The inner clamping fixture further comprises a support disc 68. The support disc 68 is located at the upper end of the tapered mandrel 61 and is fixedly connected with the upper end of the tapered mandrel 61. The support disc 68 has an annular protrusion 681 formed at the upper end thereof. The lower end of the second rubber chuck 66 is located inside the annular protrusion 681.
[0040] Preferably, the first threaded pull shaft 62 can only move upward and downward relative to the tapered mandrel 61. The two can be connected by spline connection or other prior art to prevent rotation.
[0041] During installation, the oil cylinder pull rod drives the pull shaft 4 to move upward, drives the pull claw 5 to move upward, and the upper end of the pull claw 5 is flared. The second annular groove 641 of the threaded pull shaft 64 is inserted into the inward flange at the upper end of the pull claw 5. Then, the oil cylinder pull rod drives the pull shaft 4 to reset downward, the upper end of the pull claw 5 is tapered, thereby limiting the threaded pull shaft 64 from moving upward away from the pull claw 5. Then, a screw is inserted through the second stepped hole 612 of the tapered mandrel 61 into the threaded hole (not shown in the figure) at the upper end of the tapered body 2, thereby fixing the tapered mandrel 61 and the tapered body 2.
[0042] During clamping of the workpiece, the hole of the workpiece is sleeved outside the second rubber chuck 66, and the end face of the workpiece is in contact with the upper end face of the support disc 68. Then, the oil cylinder pull rod drives the pull shaft 4 to move downward, thereby driving the pull claw 5, the threaded pull shaft 64, the first threaded pull shaft 62 and the pull rod 65 to move downward. During the downward movement, the enlarged portion of the pull rod 65 presses the second rubber chuck 66 downward, and the diameter of the second rubber chuck 66 increases until it comes into contact with the hole of the workpiece and fixes the workpiece.
[0043] It should be noted that the second rubber chuck 66 is prior art. Among them, the annular protrusion 681 is used to limit the maximum diameter of the second rubber chuck 66, so as to avoid the second rubber chuck 66 from excessively increasing the diameter and causing the rubber to be damaged.
[0044] The utility model is described above by way of example, but the utility model is not limited to the above specific embodiments, and any modification or change based on the utility model belongs to the range required by the utility model to be protected.
Claims
1. A turning jig base characterized by, The utility model relates to a turning fixture, including: Base flange (1), taper body (2), draw sleeve (3), draw shaft (4) and draw claw (5), the upper fixed connection of base flane (1) with taper body (2), draw sleeve (3) and the inner wall sliding connection of base flange (1) and / or taper body (2), draw shaft (4) and draw claw (5) are inserted into draw sleeve (3) and are connected with draw sleeve (3) sliding, draw shaft (4) is connected with draw claw (5) and drives draw claw (5) up and down direction movement, taper body (2) inside forms the inner taper hole (21) of the upper diameter greater than the lower diameter, draw sleeve (3) forms the second inner projection (31) of inside.
2. A turning jig base according to claim 1, characterized in that: Draw sleeve (3) forms second step hole (32), the diameter of second step hole (32) is greater than the diameter of the direction away from inner taper hole (21) in the direction close to inner taper hole (21), and the second inner projection (31) is located in the inner wall of second step hole (32) close to inner taper hole (21).
3. A turning jig base according to claim 2, wherein: Draw claw (5) is located above draw shaft (4), and the upper end of draw claw (5) is located at the large-diameter hole of second step hole (32).
4. The turning clamp base of claim 1, wherein: Draw sleeve (3) is located between the inner cavity of base flange (1) and the containing hole (22) of taper body (2), a first step surface is formed between the inner taper hole (21) and the containing hole (22), a first inner projection (12) is formed on the inner side of the inner cavity of the base flange (1), and the first step surface and the first inner projection (12) jointly limit the displacement of the draw sleeve (3) in the up-down direction.
5. The turning clamp base of claim 1, wherein: The lower part of the draw sleeve (3) is formed with external threads, and the lower part of the draw shaft (4) is formed with external threads; further comprising a first bolt (13), the base flange (1) is formed with a plurality of first step holes (11), and the first bolt (13) passes through the first step hole (11).
6. A turning jig base according to claim 1, wherein: Further comprising a third bolt (23), the taper body (2) is formed with a second threaded hole (26), the second threaded hole (26) is located in the radial direction of the inner taper hole (21), the third bolt (23) is threadedly connected with the second threaded hole (26), and the end of the third bolt (23) is inserted into the inner taper hole (21). Further comprising a first threaded part (25), the taper body (2) is formed with a first threaded hole (24), the first threaded part (25) is threadedly connected with the first threaded hole (24), the side of the draw sleeve (3) is formed with a groove in the up-down direction, and the first threaded part (25) is inserted into the groove of the draw sleeve (3).
7. Modular fixture using the turning fixture base according to any one of claims 1 to 6, characterized in that: Further comprising an inner clamp and an outer clamp, the turning clamp base is connected with any one of the inner clamp and the outer clamp.
8. The modular fixture of claim 7, wherein: The outer clamp is a first rubber chuck (7), the outer taper surface of the first rubber chuck (7) is in contact with the inner taper surface of the taper body (2), the first rubber chuck (7) is formed with a first annular groove (71), and the second inner projection (31) is inserted into the first annular groove (71).
9. The modular fixture of claim 7, wherein: The inner clamp includes a tapered mandrel (61), a threaded pull shaft (64), a pull rod (65) and a second rubber chuck (66), the tapered mandrel (61) is above the tapered body (2), the tapered mandrel (61) is fixedly and detachably connected with the tapered body (2), the tapered mandrel (61) is formed with a tapered shaft (611) at the upper end, the second rubber chuck (66) is sleeved outside the tapered shaft (611), the inner taper surface of the second rubber chuck (66) is in contact with the outer taper surface of the tapered shaft (611), the enlarged portion of the pull rod (65) is in contact with the top surface of the second rubber chuck (66), the pull rod (65) passes downward through the second rubber chuck (66), the pull rod (65) is fixedly positioned relative to the threaded pull shaft (64), the lower outer side of the threaded pull shaft (64) is formed with a second annular groove (641), the upper portion of the pull claw (5) is inserted into the second annular groove (641).
10. The modular fixture of claim 9, wherein: The inner clamp further includes a first threaded pull shaft (62) and a check ring (63), the check ring (63) is fixedly connected with the lower end of the inner cavity of the tapered mandrel (61), the first threaded pull shaft (62) is located in the inner cavity of the tapered mandrel (61), the upper and lower ends of the first threaded pull shaft (62) are respectively threadedly connected with the pull rod (65) and the threaded pull shaft (64); further including a support disc (68), the support disc (68) is located at the upper end of the tapered mandrel (61) and is fixedly connected with the upper end of the tapered mandrel (61), the upper end of the support disc (68) is formed with an annular protrusion (681), the lower end of the second rubber chuck (66) is located inside the annular protrusion (681).