Core rod adjusting device capable of adjusting angle and diameter

Abstract

The utility model relates to the field of tool clamps, and particularly discloses an angle and diameter adjustable core rod adjusting device which comprises a clamping shaft and a fine adjustment assembly sliding on the clamping shaft, and the fine adjustment assembly comprises a positioning shaft sleeve, a plurality of lower supporting pieces surrounding the positioning shaft sleeve and upper supporting pieces installed on the lower supporting pieces. The lower supporting piece can ascend and descend relative to the positioning shaft sleeve, and the upper supporting piece can swing and incline relative to the lower supporting piece. And the two positioning shaft sleeves can freely slide on the core rod, so that workpieces with different lengths can be flexibly adapted. And after the multiple lower supporting pieces ascend and descend, the outer side diameter of the upper supporting piece can be accurately changed, and then the machining requirements of workpieces with different inner diameters are met. And the inclination angles of the upper supporting pieces are changed through swinging operation, so that the upper supporting pieces can effectively adapt to workpieces with different tapers. The device is simple in structure, the required diameter size and angle can be adaptively adjusted in a targeted mode, the operation complexity is reduced, and the input cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of frock clamp, especially relates to a core rod adjusting device of adjustable angle and diameter. BACKGROUND

[0002] When processing cylindrical products, especially brittle material products such as ceramics and metals, the cylindrical inner hole is conical (the conical hole is formed by cold pressing, and due to the limitation of the process itself, there is a certain error in the size), and it needs to be tightly fixed during assembly. Therefore, in the production link, the gap between the core rod and the conical cylinder must be continuously adjusted to ensure that they are in close contact. The previous operation method is that when the taper changes beyond the set value, the core rod with different tapers and diameters is reprocessed or replaced. However, such frequent disassembly and assembly of workpieces or core rods can easily cause accidents such as bumping and extrusion, and the replacement process not only consumes manpower but also greatly increases production costs. In addition, due to the high hardness of the core rod, the contact part between the core rod and the workpiece is prone to edge collapse and cracking during adjustment after inserting the core rod. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a core rod adjusting device of adjustable angle and diameter which is convenient to operate.

[0004] To achieve the above-mentioned purpose, the utility model provides a core rod adjusting device of adjustable angle and diameter, which comprises a clamping shaft and two fine adjustment components that can slide on the clamping shaft, the clamping shaft and the fine adjustment components are temporarily locked in position by a fixed pin, the fine adjustment component comprises a positioning shaft sleeve, a plurality of lower support members and a plurality of upper support members, the plurality of lower support members are evenly distributed around the outside of the positioning shaft sleeve, the lower support member and the positioning shaft sleeve are connected in a sliding manner and only maintain the freedom of sliding in the radial direction of the positioning shaft sleeve, the upper support member is arranged on the side of the lower support member away from the positioning shaft sleeve, the end of the lower support member is hinged to the head of the corresponding upper support member, so that the upper support member can swing around the hinge point, a first tightening spring and a first screw rod are arranged between the lower support member and the positioning shaft sleeve, the lower support member is made close to the positioning shaft sleeve by the first tightening spring, the first screw rod penetrates the lower support member in a threaded connection mode and then abuts against the positioning shaft sleeve, and the sliding position of the lower support member and the positioning shaft sleeve is adjusted by rotating the first screw rod, a second tightening spring and a second screw rod are arranged between the lower support member and the upper support member, the upper support member is made close to or away from the lower support member by the second tightening spring, the second screw rod penetrates the lower support member in a threaded connection mode and then abuts against the tail of the upper support member, and the inclination angle of the upper support member relative to the lower support member is adjusted by rotating the second screw rod.

[0005] As an improvement of the above-mentioned scheme, the side surface of the positioning shaft sleeve is provided with a plurality of sleeves, the inner wall of the sleeve is provided with a key groove in the axial direction, and the side of the lower support close to the positioning shaft sleeve is a cylindrical structure and is provided with a protruding rib at the position of the side generatrix of the cylindrical structure. The lower support is inserted into the sleeve, and the key groove accommodates the rib.

[0006] As an improvement of the above-mentioned scheme, the side of the lower support away from the positioning shaft sleeve is a flat plate structure, and the cylindrical structure is located in the middle of the flat plate structure. The first screw rod penetrates the center position of the cylindrical structure in a threaded connection manner, and then abuts against the center of the sleeve.

[0007] As an improvement of the above-mentioned scheme, the middle of the upper support is provided with a slot for avoiding the movement path of the first screw rod, and the top of the upper support is provided with a shock-absorbing pad for abutting against the workpiece.

[0008] As an improvement of the above-mentioned scheme, a straight scale is arranged on the rib for viewing the sliding distance of the lower support, and an angle scale plate is arranged on the side surface of the lower support for viewing the swing angle of the upper support.

[0009] As an improvement of the above-mentioned scheme, the upper support is a flat plate structure, and the middle position of the outer side of the upper support is provided with a slot. A spring ring is sleeved on the plurality of slots. The spring ring not only collects a plurality of lower supports around the positioning shaft sleeve, but also collects a plurality of upper supports outside the lower support. One spring ring simultaneously replaces the first tightening spring and the second tightening spring.

[0010] As an improvement of the above-mentioned scheme, a key groove is arranged at the position of the side generatrix of the clamping shaft, and two positioning shaft sleeves are also provided with key grooves at the corresponding positions. After the two key grooves are aligned, a fixed pin can be put in to realize temporary fixation.

[0011] As an improvement of the above-mentioned scheme, the outer end of the first screw rod and the second screw rod is provided with an internal hexagonal hole or a cross slot or a single slot.

[0012] As an improvement of the above-mentioned scheme, the upper support is hinged with a movable cap at the position abutted by the second screw rod. The movable cap can swing at the tail of the upper support, and the second screw rod is inserted into the inner side of the movable cap.

[0013] The utility model has the following beneficial effects: two positioning shaft sleeves can freely slide on the core rod, thereby can flexibly adapt to workpieces of different lengths. After the lifting action, the plurality of lower supporting pieces can accurately change the outer diameter of the upper supporting piece, thereby meeting the machining requirements of workpieces of different inner diameters. And the plurality of upper supporting pieces change the inclination angle of itself through swing operation, thereby can effectively adapt to workpieces of different tapers. The device has simple structure, before use, the size of the ceramic cone is preliminarily analyzed, and then the diameter size and angle required are adaptively adjusted. Such design greatly reduces the complexity of operation and reduces the use cost investment. Moreover, since the workpiece no longer needs to be frequently moved, the risk of edge collapse and cracking of the workpiece is also effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the perspective view of the adjusting device after hiding the workpiece;

[0015] Figure 2 It is the perspective view of the adjusting device after adding the workpiece;

[0016] Figure 3 It is the perspective view of the fine adjustment assembly;

[0017] Figure 4 It is the sectional view of the fine adjustment assembly;

[0018] Figure 5 It is the perspective view of the lower supporting piece;

[0019] Figure 6 It is the perspective view of the upper supporting piece.

[0020] Explanation of reference signs: 11, workpiece;12, clamping shaft;13, spring ring;21, positioning shaft sleeve;22, sleeve;23, fixed bolt;31, lower supporting piece;32, first screw;33, rib;41, upper supporting piece;42, second screw;43, angle scale plate;44, movable cap;45, shock pad. DETAILED DESCRIPTION

[0021] In the description of the utility model, it is explained that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model.

[0022] In the description of the utility model, if several meanings are one or more, the meaning of multiple is two or more, greater than, less than, exceed and the like are understood as not including the number, above, below, within and the like are understood as including the number.If there is a description to the term "first", "second", "third", it is only for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0023] In the description of the utility model, it is necessary to explain that, unless there is definite provision and limitation, the term "installation", "connection", "connection", "arrangement" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements internally.For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific situation.The embodiments of the utility model are described below according to the overall structure.

[0024] Referring to Figures 1 to 6 The utility model discloses a core rod adjusting device of adjustable angle and diameter, include: axle 12 and two fine adjustment assembly on the axle 12 can slide, the axle 12 with fine adjustment assembly between through fixed bolt 23 temporary locking position.

[0025] The fine adjustment assembly includes positioning shaft sleeve 21, a plurality of lower support 31 and a plurality of upper support 41, a plurality of lower support 31 evenly distributed on the outside four around positioning shaft sleeve 21, as Figure 3 The lower support 31 is arranged on the side away from the positioning shaft sleeve 21, and the end of the lower support 31 is hinged to the head of the corresponding upper support 41, so that the upper support 41 can swing around the hinge point.The first tightening spring and the first screw 32 are arranged between the lower support 31 and the positioning shaft sleeve 21, the first tightening spring makes the lower support 31 close to the positioning shaft sleeve 21, the first screw 32 penetrates the lower support 31 and then abuts against the positioning shaft sleeve 21 in the form of threaded connection, and rotating the first screw 32 is used for adjusting the sliding position of the lower support 31 and the positioning shaft sleeve 21.

[0026] A second tightening spring and a second screw 42 are provided between the lower support member 31 and the upper support member 41. The second tightening spring causes the upper support member 41 to move closer to or further away from the lower support member 31. The second screw 42 passes through the lower support member 31 in a threaded connection and then abuts against the tail of the upper support member 41. Rotating the second screw 42 is used to adjust the tilt angle of the upper support member 41 relative to the lower support member 31.

[0027] When assembling the upper support 41 and the lower support 31, the heads of the multiple support members all face the same side, and correspondingly, the two fine-tuning components face the same direction.

[0028] As an improvement to the above solution, the side of the positioning bushing 21 is provided with a plurality of sleeves 22, the inner wall of the sleeves 22 is provided with keyways along the axial direction, the side of the lower support member 31 near the positioning bushing 21 is a cylindrical structure and a protruding rib 33 is provided at the position of the generatrix of the side of the cylindrical structure, the lower support member 31 is inserted into the sleeves 22, and the keyway accommodates the rib 33.

[0029] As an improvement to the above solution, the side of the lower support 31 away from the positioning bushing 21 is a flat plate structure, and the cylindrical structure is located in the middle of the flat plate structure. The first screw 32 passes through the center of the cylindrical structure by means of a threaded connection, and then abuts against the center of the sleeve 22.

[0030] As an improvement to the above solution, the upper support member 41 has a groove in the middle to avoid the movement path of the first screw 32, and the top of the upper support member 41 is provided with a shock-absorbing pad 45 for abutting against the workpiece 11. The shock-absorbing pad 45 is made of silicone. Figure 6 As shown, the shock-absorbing pad 45 is a cylinder. Since the upper support member 41 has a groove in the middle, the shock-absorbing pad 45 is independently set at both ends.

[0031] As an improvement to the above solution, the rib 33 is provided with a linear scale for viewing the sliding distance of the lower support 31, and the side of the lower support 31 is provided with an angle scale plate 43 for viewing the swing angle of the upper support 41. Figure 3 As shown, there is a reasonable gap between the lower support member 31 and the upper support member 41. When the lower support member 31 and the upper support member 41 are parallel, the upper support member 41 is considered to be at 0°. The angle scale plate 43 is higher than the surface of the lower support member 31 and extends to the side of the upper support member 41.

[0032] As an improvement of the above scheme, the upper support 41 is a flat plate structure, and a plurality of slots are arranged at the middle position of the outer side of the upper support 41, and a plurality of spring rings 13 are arranged in the slots. The spring rings 13 not only collect a plurality of lower supports 31 around the positioning shaft sleeve 21, but also collect a plurality of upper supports 41 outside the lower supports 31, and one spring ring 13 simultaneously replaces the first and second tightening springs. By using the above scheme, the number of springs used can be greatly reduced. Figure 4 As shown in the figure, after the first screw rod 32 rotates, it cannot break through the positioning shaft sleeve 21 to move downward, so it will lift the lower support 31 to achieve the adjustment function. After the second screw rod 42 rotates, the end part moves up and down, so it can push the upper support 41 to tilt.

[0033] In other embodiments, a first tightening spring is arranged between each lower support 31 and the corresponding sleeve 22, and at the same time, a second tightening spring is arranged between each upper support 41 and the corresponding lower support 31; the first tightening spring can be a compression spring, and the second tightening spring can be a torsion spring or a tension spring. In this embodiment, eight first and second tightening springs are needed respectively.

[0034] As an improvement of the above scheme, the side surface generatrix position of the clamping shaft 12 is provided with a key groove, and the two positioning shaft sleeves 21 are also provided with key grooves at the corresponding positions. After the two key grooves are aligned, they can be put into a fixed pin 23 to achieve temporary fixation. The cross section of the fixed pin 23 is a right trapezoid, which uses the inclined surface to tightly press the positioning shaft sleeve 21; or the fixed pin 23 is made of deformable rubber material, which is inserted into the key groove and temporarily locks the positioning shaft sleeve 21 by using friction.

[0035] As an improvement of the above scheme, the outer end of the first screw rod 32 and the second screw rod 42 is provided with an inner hexagonal hole or a cross slot or a single slot.

[0036] As an improvement of the above scheme, the upper support 41 is hinged with a movable cap 44 at the position abutted by the second screw rod 42, the movable cap 44 can swing at the tail of the upper support 41, and the second screw rod 42 is inserted into the inner side of the movable cap 44.

[0037] Two positioning shaft sleeves 21 can freely slide on the core rod, thereby flexibly adapting to workpieces 11 of different lengths. After the lifting action, the plurality of lower support members 31 can accurately change the outer diameter of the upper support member 41, thereby meeting the machining requirements of workpieces 11 of different inner diameters. The plurality of upper support members 41 change their inclination angles through swing operation, thereby effectively adapting to workpieces 11 of different tapers. The device has simple structure, before use, the size of the ceramic cone is preliminarily analyzed, and then the required diameter size and angle are adaptively adjusted. Such design greatly reduces the complexity of operation and reduces the investment of use cost. Moreover, since the workpiece 11 no longer needs to be frequently moved, the risk of edge collapse and cracking of the workpiece 11 is effectively reduced.

[0038] As an improvement of the above-mentioned scheme, the first screw rod 32 adopts an M8 screw rod, the second screw rod 42 adopts an M6 screw rod, and the fine adjustment assembly itself has a certain diameter after assembly. The diameter change range of the whole fine adjustment assembly is 130-150mm. Similarly, the swing range of the second support member is 0-5°.

[0039] The foregoing description of specific exemplary embodiments of the present application is intended to be illustrative only and is not intended to limit the present application to the precise forms described. Many modifications and variations are possible in light of the above teachings without departing from the spirit or essential characteristics of the present application. The particular exemplary embodiments were chosen and described in order to explain the principles of the present application and its practical application to thereby enable others skilled in the art to best utilize the present application and various embodiments with various modifications as are suited to the particular use contemplated. It is intended that the scope of the present application be defined by the claims and their equivalents.

Claims

1. An adjustable angle and diameter core rod adjusting device, characterized by, The utility model relates to a micro-adjustment assembly of a fixture, comprising: a clamping shaft and two micro-adjustment components which can slide on the clamping shaft, the clamping shaft and the micro-adjustment components are temporarily locked in position by a fixed pin; the micro-adjustment component comprises a positioning sleeve, a plurality of lower supporting members and a plurality of upper supporting members, the plurality of lower supporting members are evenly distributed around the outside of the positioning sleeve, the lower supporting members are in sliding connection with the positioning sleeve and only maintain the freedom of sliding in the radial direction of the positioning sleeve, the upper supporting members are arranged on the side of the lower supporting members away from the positioning sleeve, the end of the lower supporting member is hinged to the head of the corresponding upper supporting member, so that the upper supporting member can swing around the hinge point; a first tightening spring and a first screw are arranged between the lower supporting member and the positioning sleeve, the lower supporting member is made close to the positioning sleeve by the first tightening spring, the first screw penetrates the lower supporting member in a threaded connection mode and then abuts against the positioning sleeve, and the sliding position of the lower supporting member and the positioning sleeve is adjusted by rotating the first screw; a second tightening spring and a second screw are arranged between the lower supporting member and the upper supporting member, the upper supporting member is made close to or away from the lower supporting member by the second tightening spring, the second screw penetrates the lower supporting member in a threaded connection mode and then abuts against the tail of the upper supporting member, and the inclination angle of the upper supporting member relative to the lower supporting member is adjusted by rotating the second screw.

2. The core rod conditioning apparatus of claim 1, wherein: The side of the positioning sleeve is protrudingly provided with a plurality of sleeves, the inner wall of the sleeve is provided with a key groove in the axial direction, the side of the cylindrical structure of the lower supporting member is provided with a protruding rib at the position of the side generatrix, the lower supporting member is inserted into the sleeve, and the key groove accommodates the rib.

3. The core rod conditioning apparatus of claim 2, wherein: The side of the lower supporting member away from the positioning sleeve is a flat plate structure, the cylindrical structure is located in the middle of the flat plate structure, the first screw penetrates the center position of the cylindrical structure in a threaded connection mode and then abuts against the center of the sleeve.

4. The core rod conditioning apparatus of claim 3, wherein: The middle of the upper supporting member is provided with a slot for avoiding the movement path of the first screw, and the top of the upper supporting member is provided with a shock-absorbing pad for abutting against a workpiece.

5. The core rod conditioning apparatus of claim 4, wherein: The rib is provided with a straight line scale for checking the sliding distance of the lower supporting member, and the side of the lower supporting member is provided with an angle scale plate for checking the swinging angle of the upper supporting member.

6. The core rod conditioning apparatus of claim 5, wherein: The upper supporting member is a flat plate structure, a plurality of slots are arranged at the middle position of the outside of the upper supporting member, a spring ring is sleeved on the plurality of slots, the spring ring not only gathers the plurality of lower supporting members around the positioning sleeve, but also gathers the plurality of upper supporting members outside the lower supporting members, and one spring ring simultaneously replaces the first and second tightening springs.

7. The core rod conditioning apparatus of claim 1, wherein: The side generatrix position of the clamping shaft is provided with a key groove, and the two positioning sleeves are also provided with key grooves at the corresponding positions, and the two key grooves can be put into the fixed pin to realize temporary fixation after alignment.

8. The core rod conditioning apparatus of claim 1, wherein: The outer end of the first screw and the second screw is provided with an internal hexagonal hole or a cross slot or a single slot.

9. The core rod conditioning apparatus of claim 1, wherein: The upper support is hinged with a movable cap at the position abutting against the second screw rod, the movable cap can swing at the tail of the upper support, and the second screw rod is inserted into the inner side of the movable cap.

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