Lower center positioning device for end face and outer circle of workpiece

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By using the claw claw surface and the end surface of the workpiece and the inner circle in the inner and interior of the lower -top positioning device, combine the design of the six -sided clamping and arc clamping clamping design, using the two -cylinder symmetrical installation and multiple control methods to solve the existing existing existing method, to solve the existing existing method, to solve the existing existing method. The problem of low positioning accuracy, insufficient fault tolerance rate and uneven effort, realized high -precision, safe and reliable workpiece capture.

CN222404530UActive Publication Date: 2025-01-28HUBEI XIANGTAI INTELLIGENT EQUIP CO LTD

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Patent Information

Application Number: CN202421165251.0
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-05-25
Publication Date: 2025-01-28
Estimated Expiration: 2034-05-25

AI Technical Summary

Technical Problem

The existing lower top positioning device has low positioning accuracy and insufficient fault tolerance. Uneven force of the jaws leads to damage to the workpiece, and inappropriate cylinder stroke leads to inadequate grip of the jaws.

Method used

Increase the positioning accuracy by incisioning the side surface of the workpiece and the end surface of the workpiece, and the use of the six -sided clamping method to improve the fault tolerance rate. Multiple ways to control the lift itinerary and speed of clamping clamps.

Benefits of technology

The positioning accuracy and fault tolerance rate of clamping clamps are greatly improved, and the damage to the workpiece caused by uneven effort, and improving the safety and production efficiency of workpieces.

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Abstract

The utility model discloses a lower tip positioning device for an end face and an outer circle of a workpiece, which relates to the technical field of tool clamps and comprises a bottom plate, a lower tip component, a clamping jaw component and a driving component. The lower center part comprises a lower center seat mounted on the bottom plate, and a positioning disc is arranged above the lower center seat; the clamping jaw part is movably embedded in the positioning disc; the driving part is used for driving the clamping jaw part to ascend and descend, and then the clamping jaw part clamps and releases the workpiece. The utility model has better practical application value and economic benefit for promoting production.

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Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a lower center positioning device for the end face and outer circle of a workpiece. Background Art

[0002] Lower center positioning devices are widely used in automated production lines, induction hardening machine tools and other industries to clamp and fix workpieces.

[0003] There are various clamping tools on the market, but they have many defects. For example, the clamping positioning accuracy of the clamp is low, which causes errors in subsequent actions and damages the workpiece; a single clamp only corresponds to one workpiece; the cylinder stroke is too long, causing the clamp to exert excessive force and damage the workpiece; the cylinder stroke is too short, causing the clamp to not grip firmly, causing the workpiece to loosen or damage the gripper, etc. Utility Model Content

[0004] In view of the defects existing in the prior art, the purpose of the utility model is to provide a lower center positioning device for the end face and outer circle of the workpiece, which greatly improves the positioning accuracy of the clamping jaws by means of the jaw faces being inscribed inwardly with the end face and outer circle of the workpiece; the six-sided clamping method is used to improve the fault tolerance rate; the clamping jaws are curved and can clamp similar workpieces within a certain diameter range; the symmetrical installation of double cylinders is used to reduce the damage to the workpiece caused by inconsistent lifting force of the clamping jaws, thereby improving the safety of workpiece grasping; the lifting stroke and speed of the clamping jaws are controlled in a variety of ways to reduce damage to the workpiece caused by cylinder stoppage, which has good practical application value and promotes the economic benefits of production.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: a lower center positioning device for the end face and outer circle of a workpiece, including a base plate, a lower center component, a clamping jaw component and a driving component; the lower center component includes a lower center seat installed on the base plate, and a positioning plate is arranged above the lower center seat; the clamping jaw component is movably embedded in the positioning plate; the driving component is used to drive the clamping jaw component to lift and lower, thereby realizing the clamping and release of the workpiece by the clamping jaw component.

[0006] A further improvement is that the clamping jaw component comprises a cylindrical base, the outer circumferential surface of the base is provided with a plurality of protrusions, and the upper ends of the protrusions are provided with a plurality of inclined outer circumferential positioning clamping jaws.

[0007] A further improvement is that: six outer circle positioning jaws are provided and are distributed on the base; and the jaw surfaces of the outer circle positioning jaws have an arc.

[0008] Further improvements are: the bottom surface of the positioning plate is connected to a fixing plate, the fixing plate is in a circular ring shape, and the center hole of the fixing plate is provided with a plurality of limit grooves corresponding to the protrusions; a first avoidance hole adapted to the base is provided at the center of the positioning plate, and the avoidance hole is provided with a plurality of avoidance grooves adapted to the outer circle positioning claws.

[0009] Further improvements are: the driving component includes a pulling plate and two cylinders, the two cylinders are fixedly mounted on the bottom plate and located on both sides of the lower top component, and the two ends of the pulling plate are respectively connected to the piston rods of the two cylinders; the clamping claw component also includes a lifting plate, the top surface of the lifting plate is connected to the base through a connecting seat, and the bottom surface of the lifting plate is connected to the pulling plate.

[0010] Further improvements are: a positioning turntable is arranged above the lower top seat, and the positioning turntable is connected to the fixed plate through a plurality of guide columns; the lifting plate is provided with a guide groove adapted to the guide column, and the pulling plate is provided with a second avoidance hole adapted to the guide column.

[0011] Further improvements are: a positioning column is arranged on the lower top seat, and the upper end of the positioning column passes through the positioning turntable, the pulling plate and the lifting plate in sequence and then extends to the inside of the base; the base is a hollow structure, and an oil-free bushing matched with the top of the positioning column is arranged in the base; a spring is arranged on the outer sleeve of the positioning column, and the two ends of the spring respectively abut against the positioning turntable and the oil-free bushing.

[0012] A further improvement is that a first switch bracket is provided on the base, and the first switch bracket is used to install a first detection switch, and the first detection switch is used to detect the position of the lifting plate.

[0013] A further improvement is that a quasi-stop signal disk is provided on the positioning turntable, and a second switch bracket is provided on the base, the second switch bracket is used to install a second detection switch adapted to the quasi-stop signal disk, and the second detection switch is used to detect the stop position of the lower top seat.

[0014] A further improvement is that a mounting seat matching the lower top component is arranged in the middle of the base.

[0015] The beneficial effects of the utility model are:

[0016] The utility model greatly improves the positioning accuracy of the clamping jaws by means of the method of intangentiating the jaw faces of the clamping jaws with the end faces and the outer circle of the workpiece; the method of clamping on six sides improves the fault tolerance rate; the clamping jaws are in an arc shape and can clamp similar workpieces within a certain diameter range; the symmetrical installation of double cylinders reduces the situation where the clamping jaws are damaged by inconsistent lifting forces, thereby improving the safety of workpiece grasping; the lifting stroke and speed of the clamping jaws are controlled in a variety of ways, thereby reducing damage to the workpiece caused by cylinder stoppage, and has good practical application value and promotes the economic benefits of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a lower center positioning device for the end face and outer circle of a workpiece in an embodiment of the utility model;

[0018] Figure 2 This is a working schematic diagram of the lower center positioning device for the end face and outer circle of a workpiece in an embodiment of the utility model;

[0019] Figure 3 for Figure 2 The main view of

[0020] Figure 4 for Figure 3 A cross-sectional view of

[0021] Figure 5 This is a schematic diagram of the structure of the lower top component in the embodiment of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the clamping jaw component in the embodiment of the utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the outer circle positioning clamping jaws in the embodiment of the utility model;

[0024] Figure 8 This is a working state diagram of the clamping jaw component in the embodiment of the utility model;

[0025] Fig. 9 It is a schematic diagram of the structure of the driving component in the embodiment of the utility model.

[0026] Reference numerals:

[0027] 1-bottom plate; 11-mounting seat; 12-first switch bracket; 13-second switch bracket;

[0028] 2-lower top component; 201-lower top seat; 202-positioning turntable; 203-fixed plate; 204-positioning plate; 205-positioning column; 206-spring; 207-limiting groove; 208-first avoidance hole; 209-avoidance groove; 210-guide column; 211-quasi-stop signal plate;

[0029] 3-claw component; 31-lifting plate; 32-connecting seat; 33-base; 34-bump; 35-external circle positioning claw; 36-oil-free bushing; 37-guide groove;

[0030] 4-driving component; 41-cylinder; 42-pull plate; 43-second avoidance hole. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below. The embodiments are shown in the accompanying drawings, wherein the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions.

[0032] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise specified and limited, the terms "assembly", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two elements can be internally connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the utility model, unless otherwise specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "below" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the height of the second feature. A first feature being "above", "below" and "below" a second feature includes that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the second feature.

[0036] The following is a further description of the specific implementation of the utility model in conjunction with the drawings of the specification, so that the technical solution and its beneficial effects of the utility model are clearer and more explicit. The following description of the embodiments with reference to the drawings is exemplary and intended to explain the utility model, but cannot be understood as limiting the utility model.

[0037] See also Figure 1 to Figure 4 As shown, the embodiment of the utility model provides a lower center positioning device for the end face and outer circle of a workpiece, including a base plate 1, and also including a lower center component 2, a clamping jaw component 3 and a driving component 4; when the end face of the workpiece is placed on the clamping jaw component 3, and the upper center component falls to fix the workpiece, the driving component 4 drives the clamping jaw component 3 to rise so as to clamp the workpiece. Specifically, a mounting seat 11 adapted to the lower center component 2 is provided in the middle of the base 33. A first switch bracket 12 is provided on the base 33, and the first switch bracket 12 is used to install a first detection switch, which is used to detect the position of the lifting plate 31, thereby controlling the stroke of the cylinder. A quasi-stop signal disk 211 is provided on the positioning turntable 202, and a second switch bracket 13 is provided on the base 33. The second switch bracket 13 is used to install a second detection switch adapted to the quasi-stop signal disk 211, and the second detection switch is used to detect the stop position of the lower center seat 201.

[0038] See also Figure 5 As shown, the lower top component 2 includes a lower top seat 201 mounted on the bottom plate 1, and a positioning plate 204 is arranged above the lower top seat 201; specifically, the bottom surface of the positioning plate 204 is connected with a fixing plate 203, the fixing plate 203 is annular, and the center hole of the fixing plate 203 is provided with a plurality of limiting grooves 207 corresponding to the protrusion 34; a first avoidance hole 208 adapted to the base 33 is arranged at the center of the positioning plate 204, and the avoidance hole is provided with a plurality of avoidance grooves 209 adapted to the outer circle positioning jaws 35. A positioning turntable 202 is arranged above the lower top seat 201, and the positioning turntable 202 is connected to the fixing plate 203 through a plurality of guide columns 210; the lifting plate 31 is provided with a guide groove 37 adapted to the guide column 210, and the pull plate 42 is provided with a second avoidance hole 43 adapted to the guide column 210. A positioning column 205 is provided on the lower top seat 201, and the upper end of the positioning column 205 passes through the positioning turntable 202, the pull plate 42 and the lifting plate 31 in sequence and then extends to the inside of the base 33; the base 33 is a hollow structure, and an oil-free bushing 36 adapted to the top of the positioning column 205 is provided in the base 33; a spring 206 is provided on the outer sleeve of the positioning column 205, and the two ends of the spring 206 are respectively against the positioning turntable 202 and the oil-free bushing 36, and are normally in a compressed state. The spring relaxes and compresses with the lifting and lowering of the cylinder, driving the lifting plate to rise and fall, and then driving the outer circle positioning jaw to rise and fall.

[0039] See also Figure 6 to Figure 8As shown, the clamping jaw component 3 is movably embedded in the positioning plate 204; specifically, the clamping jaw component 3 includes a cylindrical base 33, and the outer surface of the base 33 is provided with a plurality of protrusions 34, and the upper end of the protrusion 34 is provided with a plurality of inclined outer circle positioning jaws 35. In this embodiment, six outer circle positioning jaws 35 are provided, and they are all distributed on the base 33; the six outer circle positioning jaws 35 can improve the fault tolerance of the jaws, and the jaw surface of the outer circle positioning jaw 35 has an arc, so that it can clamp the same workpiece within a certain diameter range. The jaw surface of the outer circle positioning jaw 35 is inscribed with the outer circle of the workpiece.

[0040] See also Fig. 9 As shown, the driving component 4 is used to drive the jaw component 3 to rise and fall, thereby realizing the clamping and releasing of the workpiece by the jaw component 3. Specifically, the driving component 4 includes a pull plate 42 and two cylinders 41, the two cylinders 41 are fixedly mounted on the bottom plate 1 and located on both sides of the lower top component 2, and the two ends of the pull plate 42 are respectively connected to the piston rods of the two cylinders 41; the jaw component 3 also includes a lifting plate 31, the top surface of the lifting plate 31 is connected to the base 33 through the connecting seat 32, and the bottom surface of the lifting plate 31 is connected to the pull plate 42.

[0041] In the description of the specification, the description with reference to the terms "one embodiment", "preferably", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model, and the schematic expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0042] Through the description of the above structure and principle, technicians in the relevant technical field should understand that the present invention is not limited to the above-mentioned specific implementation methods. Improvements and substitutions based on the present invention using the known technology in the field all fall within the protection scope of the present invention and should be defined by the claims.

Claims

1. A lower center positioning device for the end face and outer circle of a workpiece, comprising a base plate (1), characterized in that: It also includes a lower top component (2), a clamping claw component (3) and a driving component (4); The lower center component (2) comprises a lower center seat (201) mounted on the bottom plate (1), and a positioning plate (204) is arranged above the lower center seat (201); The clamping claw component (3) is movably embedded in the positioning plate (204); The driving component (4) is used to drive the clamping jaw component (3) to rise and fall, thereby achieving the clamping and releasing of the workpiece by the clamping jaw component (3).

2. The lower center positioning device for the end face and outer circle of a workpiece according to claim 1, characterized in that: The clamping jaw component (3) comprises a cylindrical base (33), the outer cylindrical surface of the base (33) is provided with a plurality of protrusions (34), and the upper ends of the protrusions (34) are provided with a plurality of inclined outer cylindrical positioning clamping jaws (35).

3. The lower center positioning device for the end face and outer circle of a workpiece according to claim 2, characterized in that: Six outer circle positioning jaws (35) are provided and are distributed on the base (33); the jaw surfaces of the outer circle positioning jaws (35) have an arc.

4. The lower center positioning device for the end face and outer circle of a workpiece according to claim 2, characterized in that: The bottom surface of the positioning plate (204) is connected to a fixing plate (203), the fixing plate (203) is annular, and the center hole of the fixing plate (203) is provided with a plurality of limiting grooves (207) corresponding to the protrusions (34); a first avoidance hole (208) adapted to the base (33) is provided at the center of the positioning plate (204), and the avoidance hole is provided with a plurality of avoidance grooves (209) adapted to the outer circle positioning clamping claws (35).

5. The lower center positioning device for the end face and outer circle of a workpiece according to claim 4, characterized in that: The driving component (4) comprises a pulling plate (42) and two cylinders (41), wherein the two cylinders (41) are fixedly mounted on the bottom plate (1) and located on both sides of the lower top component (2), and the two ends of the pulling plate (42) are respectively connected to the piston rods of the two cylinders (41); the clamping jaw component (3) further comprises a lifting plate (31), wherein the top surface of the lifting plate (31) is connected to the base (33) via a connecting seat (32), and the bottom surface of the lifting plate (31) is connected to the pulling plate (42).

6. The lower center positioning device for the end face and outer circle of a workpiece according to claim 5, characterized in that: A positioning turntable (202) is arranged above the lower center seat (201), and the positioning turntable (202) is connected to the fixed plate (203) through a plurality of guide columns (210); the lifting plate (31) is provided with a guide groove (37) adapted to the guide column (210), and the pulling plate (42) is provided with a second avoidance hole (43) adapted to the guide column (210).

7. The lower center positioning device for the end face and outer circle of a workpiece according to claim 6, characterized in that: A positioning column (205) is provided on the lower center seat (201), and the upper end of the positioning column (205) passes through the positioning turntable (202), the pull plate (42) and the lifting plate (31) in sequence and then extends to the inside of the base (33); the base (33) is a hollow structure, and an oil-free bushing (36) adapted to the top of the positioning column (205) is provided in the base (33); a spring (206) is provided on the outer sleeve of the positioning column (205), and the two ends of the spring (206) are respectively abutted against the positioning turntable (202) and the oil-free bushing (36).

8. The lower center positioning device for the end face and outer circle of a workpiece according to claim 5, characterized in that: A first switch bracket (12) is provided on the base (33), and the first switch bracket (12) is used to install a first detection switch, and the first detection switch is used to detect the position of the lifting plate (31).

9. The lower center positioning device for the end face and outer circle of a workpiece according to claim 6, characterized in that: The positioning turntable (202) is provided with a quasi-stop signal disk (211), and the base (33) is provided with a second switch bracket (13), the second switch bracket (13) being used to install a second detection switch adapted to the quasi-stop signal disk (211), the second detection switch being used to detect the stop position of the lower top seat (201).

10. The lower center positioning device for the end face and outer circle of a workpiece according to claim 1, characterized in that: A mounting seat (11) adapted to the lower top component (2) is arranged in the middle of the base (33).