CN219444352U

CN219444352U - Face gear clamp

Info

Publication number: CN219444352U
Application number: CN202320574047.3U
Authority: CN
Inventors: 阮文浩; 张�浩; 康少博; 陆军; 许建忠; 邢鹤琛; 许俊伟
Original assignee: Zhengzhou Research Institute of Mechanical Engineering Co Ltd
Current assignee: Zheng Ji Suo Zhengzhou Transmission Technology Co ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-08-01
Anticipated expiration: 2033-03-22

Abstract

The utility model relates to the technical field of machine tool accessories, and discloses a face gear clamp which comprises a fixed seat for horizontally placing a face gear, wherein a first mounting hole with an upward opening is formed in the fixed seat, an inner circle positioning mechanism is arranged in the first mounting hole and comprises a first hydraulic cylinder vertically arranged in the first mounting hole, a piston rod of the first hydraulic cylinder is connected with a positioning shaft, the positioning shaft is used for being matched with a central hole of the face gear from below to radially position the face gear, a radial protruding part is arranged on the positioning shaft and is used for being matched with a key slot of the face gear to circumferentially position the face gear, outer circle clamping assemblies which are uniformly arranged around the axis of the positioning shaft and used for radially inwards clamping the face gear are arranged on the fixed seat, and the number of the outer circle clamping assemblies is at least three. The clamping device is more stable in clamping the face gear, and is beneficial to improving the processing efficiency and precision of the face gear.

Description

Face gear clamp

Technical Field

The utility model relates to the technical field of machine tool accessories, in particular to an end-face gear clamp.

Background

Gears are very widely applied in the field of mechanical transmission, and common gears mainly comprise straight gears, bevel gears, face gears and the like. Wherein the face gear is a gear which is matched with a straight gear or a bevel gear at an intersecting angle of 90 degrees. The face gear is mainly applied to industries such as helicopters, fishing line wheels, clocks, bicycles and the like. Prior art face gear workpieces or blanks are held prior to machining, basically clamped using a three jaw chuck. However, since the axial length of the face gear is generally relatively short, the clamping of the three-jaw chuck is not facilitated, so that the clamping of the face gear by the three-jaw chuck is difficult to reach a sufficient degree of stability, and the machining efficiency and precision are low.

Disclosure of Invention

In order to solve the technical problems in the prior art, the utility model provides the face gear clamp which can effectively improve the clamping degree of the face gear and clamp the face gear more firmly, thereby being beneficial to improving the processing efficiency and the processing precision of the face gear.

The utility model achieves the above object by the following technical scheme.

The utility model provides a face gear anchor clamps, including the fixing base that is used for the level to place face gear, be equipped with the first mounting hole of opening up on the fixing base, be provided with interior circle positioning mechanism in the first mounting hole, interior circle positioning mechanism is including the vertical first pneumatic cylinder of installing in first mounting hole, be connected with the locating shaft on the piston rod of first pneumatic cylinder, the locating shaft is used for inserting face gear's centre bore in order to radial location to the face gear from the cooperation of below, be equipped with radial protruding part on the locating shaft, protruding part is used for the cooperation to insert face gear's keyway in order to fix a position to face gear circumference, be equipped with the excircle clamping assembly who is used for radial inwards clamping face gear who evenly arranges around the axle center of locating shaft on the fixing base, the quantity of excircle clamping assembly is three sets at least.

The object held by the fixture of the present utility model includes a face gear workpiece, a blank, a semi-finished product or a finished product, so the face gear described in the scheme may be a face gear workpiece, a blank, a semi-finished product or a finished product. The excircle clamping assembly in the scheme can adopt the structural form of the clamping jaw of the chuck in the prior art, and can also adopt other structural forms. When the scheme is used, the face gear is placed on the fixing seat, the first hydraulic cylinder is utilized to drive the positioning shaft to move upwards to insert the central hole of the face gear, the face gear is positioned through the positioning shaft and the protruding part on the positioning shaft, the face gear can be effectively prevented from rotating, then the outer circle clamping assembly is utilized to clamp the face gear inwards along the radial direction of the face gear, and the workpiece is prevented from displacement or vibration in the machining process.

As a further improved structural form, the fixing seat is provided with second mounting holes with upward openings, and the number of the second mounting holes is the same as that of the outer circle clamping assemblies; each set of outer circle clamping assembly comprises:

the sliding seat is fixed on the fixed seat and is provided with a vertical sliding way and a transverse sliding way which are mutually communicated; the vertical slideway is communicated with the second mounting hole; the trend of the transverse slideway is along the radial direction of the positioning shaft, and one end of the transverse slideway, which is close to the positioning shaft, is an opening;

the lifting wedge block is in sliding fit in the vertical slideway;

the transverse moving wedge block is in sliding fit in the transverse slideway;

the second hydraulic cylinders are vertically arranged in the second mounting holes, and one second hydraulic cylinder is arranged in each second mounting hole;

the lower end of the lifting wedge block is connected to a piston rod of the second hydraulic cylinder; one end of the transverse moving wedge block is an abutting end, the abutting end is used for abutting the face gear after extending out of the opening of the transverse slideway, the other end of the transverse moving wedge block is a bevel end, and the bevel end is used for being matched with the upper end bevel of the lifting wedge block. The hydraulic cylinder is used for driving the wedge block, so that the automation degree of the clamp is improved, and the clamping acting force is large enough and stable.

As a further improved structural form, the transverse wedge comprises a push rod section and a rear seat section which are transversely fixed together, the transverse slide comprises a first transverse slide and a second transverse slide which are mutually communicated, and the outer edge of the section of the second transverse slide exceeds the outer edge of the section of the first transverse slide; the abutting end of the transverse moving wedge block is positioned on the ejector rod section, and the inclined surface end of the transverse moving wedge block is positioned on the rear seat section; the section of the rear seat section is matched with the section of the second transverse slideway, the rear seat section is in sliding fit with the second transverse slideway, and the ejector rod section freely slides in the first transverse slideway.

As a further improved structural form, the end part of the abutting end of the transverse moving wedge block is an arc-shaped surface matched with the peripheral surface of the face gear.

As a further improved structural form, the face gear clamp further comprises outer circle pressing assemblies for pressing the face gears, the number of the outer circle pressing assemblies is the same as that of the outer circle clamping assemblies, the outer circle pressing assemblies and the outer circle clamping assemblies are alternately arranged, and all the outer circle pressing assemblies are uniformly arranged around the axis of the positioning shaft; the excircle compresses tightly the subassembly and includes:

the support frame is fixedly connected to the fixing seat;

the pressing rod is obliquely arranged, one end of the pressing rod is a control end, a rotary handle is arranged at the control end, the other end of the pressing rod is a pressing end used for abutting against the outer peripheral surface of the face gear, the pressing end is obliquely downward, the head of the pressing end is conical, and line contact is formed when the head of the pressing end abuts against the outer peripheral surface of the face gear. The compressing rod in the structural form is obliquely arranged, and the head part of the compressing end and the peripheral surface of the face gear form line contact when in use, so that the compressing rod has radial pressure and vertical friction force on the face gear. The radial pressure plays a further clamping role on the face gear, and the vertical friction force can play a pressing role, so that the face gear is always pressed on the fixing seat, and vibration of the face gear is effectively prevented. In addition, the positioning shaft is used for positioning the face gear from the inside, and the pressing rod and the transverse wedge block clamp the face gear from the side face, so that the upper end and part of the peripheral surface of the face gear are free, and more processing space is reserved for cutters and the like.

As a further improved structural form, the number of the excircle compressing assemblies and the excircle clamping assemblies is three or four.

As a further improved structural form, the first mounting hole on the fixing seat is a through hole, and a counter bore is arranged at the opening of the lower end of the first mounting hole; the inner circle positioning mechanism further comprises a first connecting plate, the first connecting plate is connected to the fixing seat and is arranged in the counter bore, and the first hydraulic cylinder is fixedly connected to the first connecting plate.

Compared with the prior art, the utility model has the beneficial effects that: the inner circle positioning mechanism and the outer circle clamping assembly are utilized to position and clamp the face gear from different directions, so that the clamping degree of the face gear can be effectively improved, the clamping of the face gear is more stable, the processing efficiency and the processing precision of the face gear are improved, and the follow-up processing quality of the face gear is guaranteed. The excircle clamping assembly plays a further clamping role on the face gear, and can enable the face gear to be always pressed on the fixing seat, so that vibration of the face gear is effectively prevented. In addition, the working space of the processing tool and the like can be effectively enlarged.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.

Fig. 2 is a schematic cross-sectional view of a slider and a plug in an assembled state according to an embodiment of the present utility model.

FIG. 3 is a schematic cross-sectional view of a traversing wedge in an embodiment of the present utility model.

Description of the embodiments

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the embodiment, as shown in fig. 1, the embodiment describes a face gear clamp, which structurally includes a fixing seat 11, an inner circle positioning mechanism, an outer circle clamping assembly and an outer circle compressing assembly. Wherein, the top of fixing base 11 is fixed to be installed and is fixed a positioning ring platform 12. In use, face-gear workpiece 900 is placed horizontally on positioning ring table 12, thus facilitating positioning of face-gear workpiece 900. The fixing seat 11 is provided with a vertical first mounting hole 111, and the first mounting hole 111 is a through hole and is in a step shape. A counter bore is provided in the fixing base 11 at the lower end opening of the first mounting hole 111.

The inner circle positioning mechanism is disposed in the first mounting hole 111. The inner circle positioning mechanism comprises a first hydraulic cylinder 21, a positioning shaft 22, an adapter plate 23 and a first connecting plate 24. The first connecting plate 24 is connected to the fixing base 11, and the first connecting plate 24 is disposed in a counter bore at the lower end of the first mounting hole 111. The bottom of the first hydraulic cylinder 21 is fixedly connected to the first connecting plate 24, and the first hydraulic cylinder 21 is vertically arranged. The adapter plate 23 is connected to a piston rod of the first hydraulic cylinder 21, and the lower end of the positioning shaft 22 is connected to the adapter plate 23. The positioning shaft 22 includes a cylindrical portion for coaxially inserting into the center hole of the face gear workpiece 900 and a convex portion radially protruding from the cylindrical portion, and the cylindrical portion and the center hole of the face gear workpiece 900 are clearance fitted, or the diameter of the cylindrical portion is slightly smaller than the diameter of the center hole of the face gear workpiece 900. The protruding portion is used for being inserted into the key slot of the face gear workpiece 900 in a matching manner, and transition fit is adopted between the protruding portion and the key slot of the face gear workpiece 900 in the embodiment, so that the positioning shaft 22 is convenient to insert into the face gear workpiece 900, and the face gear workpiece 900 can be initially positioned radially and can be restrained from rotating. In other embodiments a clearance fit between the raised portion and the key slot of the face gear may also be used. The inner circle positioning mechanism in the embodiment is stable in connection and convenient to assemble and disassemble. When the piston rod of the first hydraulic cylinder 21 extends outwards, the positioning shaft 22 is driven to be inserted into the central hole and the key groove of the face gear workpiece 900 from below in a matched mode, and radial and circumferential positioning can be conducted on the face gear workpiece 900.

Three second mounting holes 112 are provided in the fixing base 11 in the present embodiment, and the three second mounting holes 112 are uniformly arranged around the axis of the positioning shaft 22. The second mounting hole 112 is a vertical through hole, and a counter bore is arranged at the opening of the lower end of the second mounting hole 112 on the fixing seat 11.

As shown in fig. 1 and 2, the number of the outer circle clamping assemblies in the present embodiment is three, and the three outer circle clamping assemblies are uniformly arranged around the axis of the positioning shaft 22, and in other embodiments, four outer circle clamping assemblies may be used. Each set of outer circle clamping assemblies in this embodiment includes a slide 31, a lifting wedge 32, a traversing wedge 33, a second hydraulic cylinder 34, and a second connecting plate 35. The second connecting plate 35 is connected to the fixing seat 11, and the second connecting plate 35 is disposed in a counter bore at the lower end of the second mounting hole 112. The second hydraulic cylinder 34 is fixedly connected to the second connecting plate 35, and the second hydraulic cylinder 34 is vertically arranged. The lower end of lifting wedge 32 is connected to the piston rod of second hydraulic cylinder 34. The slide 31 is fixedly connected to the fixed seat 11, a vertical slide 311 and a horizontal slide 312 which are mutually communicated are arranged in the slide 31, and the vertical slide 311 is communicated with the second mounting hole 112. The transverse slideway 312 extends along the radial direction of the positioning shaft 22, and both ends of the transverse slideway 312 are open. Lifting wedge 32 is slip fit in vertical slide 311 and traversing wedge 33 is slip fit in lateral slide 312.

As shown in fig. 2, the lateral slideway 312 in the present embodiment includes a first lateral slideway 313 and a second lateral slideway 314 which are communicated with each other, and the cross-section outer edge of the second lateral slideway 314 exceeds the cross-section outer edge of the first lateral slideway 313, so that the first lateral slideway 313 and the second lateral slideway 314 form a step shape.

As shown in fig. 2 and 3, the traversing wedge 33 in this embodiment includes an integrally laterally disposed ram section 331 and a rear seat section 332. The cross section of the rear seat section 332 matches the cross section of the second transverse slide 314, and the rear seat section 332 and the second transverse slide 314 are a sliding fit. The ejector rod section 331 freely slides in the first transverse slideway 313, the optimized structure is that the section of the ejector rod section 331 is matched with the section of the first transverse slideway 313, and the ejector rod section 331 is in sliding fit with the first transverse slideway 313, but loose clearance fit is suitable to be adopted between the ejector rod section 331 and the first transverse slideway 313, so that the processing is convenient on one hand, and the phenomenon that sliding is unsmooth due to mutual influence between two sliding fit is avoided on the other hand.

As shown in fig. 1, 2 and 3, the ejector rod segment 331 is close to the positioning shaft 22 with respect to the rear seat segment 332, and the free end of the ejector rod segment 331 (i.e., the left end of the traversing wedge 33 in the drawing) is an abutment end and is used for abutting against the face gear workpiece 900. The end of the abutting end is an arc surface 333 matched with the outer peripheral surface of the face gear workpiece 900, so that a better clamping effect can be achieved, and the corresponding traversing wedge 33 can be replaced according to different face gears. The rear seat section 332 is remote from the positioning shaft 22 relative to the ram section 331, and the free end of the rear seat section 332 (i.e., the right end of the traversing wedge 33 in the illustration) is a beveled end and is adapted to mate with the upper end bevel of the lifting wedge 32.

The second lateral slideway 314 in this embodiment is detachably connected to the plug 36 at an end remote from the first lateral slideway 313 (i.e. the right end of the second lateral slideway 314 in the illustration). By disassembling the plug 36, the transverse wedge 33 can be disassembled and replaced, and the replacement of parts is facilitated.

When the face gear workpiece 900 is used, the piston rod of the second hydraulic cylinder 34 is controlled to extend outwards to drive the lifting wedge block 32 to lift, the lifting wedge block 32 can drive the transverse moving wedge block 33 to transversely move towards the face gear workpiece 900 through inclined plane matching, finally, the abutting end of the transverse moving wedge block 33 is tightly pressed against the outer peripheral surface of the face gear workpiece 900, and the three transverse moving wedge blocks 33 can synchronously act to clamp the face gear workpiece 900 inwards along the radial direction of the face gear workpiece 900.

As shown in fig. 1, the number of the outer circle pressing assemblies in the present embodiment is three, the outer circle pressing assemblies and the outer circle clamping assemblies are alternately arranged, and the three outer circle pressing assemblies are uniformly arranged around the axis of the positioning shaft 22, and the face gear workpiece 900 is locked on the fixing seat 11 through the outer circle clamping assemblies and the outer circle pressing assemblies.

The outer circle pressing assembly includes a support frame 41 and a pressing rod 42. The support 41 is fixed to the fixed base 11. The pressing rod 42 is in threaded connection on the supporting frame 41, the pressing rod 42 is obliquely arranged, an included angle of 45 degrees is formed between the pressing rod 42 and the vertical direction, one end of the pressing rod 42 is a pressing end used for abutting against the outer peripheral surface of the face gear workpiece 900, and the pressing end is obliquely downward. The other end of the pressing rod 42 is a control end provided with a rotary handle 43. The head of the pressing end of the pressing rod 42 is tapered at a taper angle of 90 ° so that the head of the pressing end makes line contact with the outer peripheral surface of the face gear workpiece 900 when abutted.

Due to the structural arrangement of the hold-down bar 42, the hold-down bar 42 has both radial pressure and vertical friction against the face gear workpiece 900 when in abutment. The radial pressure plays a further clamping role on the face gear workpiece 900, and the vertical friction force can play a pressing role, so that the face gear workpiece 900 is always tightly attached to the positioning ring table 12, and vibration of the face gear workpiece 900 is effectively prevented.

The working process of the embodiment is as follows: the face gear workpiece 900 is horizontally placed on the positioning ring table 12, the first hydraulic cylinder 21 is started to drive the positioning shaft 22 to ascend, the positioning shaft 22 is inserted into the central hole of the face gear workpiece 900 from below, and the protruding portion on the positioning shaft 22 is matched with and inserted into the key slot of the face gear workpiece 900, so that the face gear workpiece 900 can be radially and circumferentially positioned. Then, the second hydraulic cylinder 34 is started to drive the lifting wedge block 32 to ascend, and further drive the traversing wedge block 33 to move towards the face gear workpiece 900 so as to clamp the face gear workpiece 900. Then the rotary handle 43 is rotated, so that the pressing rod 42 moves downwards along the axial direction of the rotary handle, and pressure is applied to the face gear workpiece 900, so that the face gear workpiece 900 can be further clamped, and the face gear workpiece 900 can be always attached to the positioning annular table 12.

In short, the embodiment locates the face gear workpiece from the inside through the locating shaft, and the compressing rod and the transverse wedge block clamp the face gear workpiece from the side face, so that the clamping degree of the face gear workpiece can be effectively improved, the clamping of the face gear workpiece is more stable, the processing efficiency and the processing precision of the face gear workpiece are improved, and the follow-up processing quality of the face gear workpiece is guaranteed. In addition, the upper end and part of the peripheral surface of the face gear workpiece can be free, so that more processing space is reserved for cutters and the like.

The above embodiments are only for illustrating the technical scheme of the present utility model, and are not limited thereto. Although the utility model has been described in detail with reference to the above embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the above embodiments can be modified or some technical features thereof can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The utility model provides a face gear anchor clamps, a serial communication port, including fixing base (11) that are used for the level to place the face gear, be equipped with opening first mounting hole (111) up on fixing base (11), be provided with interior circle positioning mechanism in first mounting hole (111), interior circle positioning mechanism is including vertical first pneumatic cylinder (21) of installing in first mounting hole (111), be connected with location axle (22) on the piston rod of first pneumatic cylinder (21), location axle (22) are used for inserting the centre bore of face gear in order to radially fix a position the face gear from the below cooperation, be equipped with radial protruding part on location axle (22), protruding part is used for the keyway of cooperation insertion face gear in order to fix a position the face gear circumference, be equipped with on fixing base (11) around the outer circle clamping assembly of the axle center evenly arranged of location axle (22) that is used for radially inwards pressing from both sides face gear, the quantity of outer circle clamping assembly is three at least.

2. The face gear clamp according to claim 1, wherein the fixing seat (11) is provided with second mounting holes (112) with upward openings, and the number of the second mounting holes (112) is the same as the number of the outer circle clamping assemblies; each set of outer circle clamping assembly comprises:

the sliding seat (31) is fixed on the fixed seat (11), and a vertical sliding rail (311) and a transverse sliding rail (312) which are mutually communicated are arranged on the sliding seat (31); the vertical slideway (311) is communicated with the second mounting hole (112); the trend of the transverse slideway (312) is along the radial direction of the positioning shaft (22), and one end of the transverse slideway (312) close to the positioning shaft (22) is an opening;

a lifting wedge block (32) which is in sliding fit in the vertical slideway (311);

a traversing wedge (33) which is in sliding fit in the traversing slideway (312);

the second hydraulic cylinders (34) are vertically arranged in the second mounting holes (112), and one second hydraulic cylinder (34) is arranged in each second mounting hole (112);

the lower end of the lifting wedge block (32) is connected to a piston rod of the second hydraulic cylinder (34); one end of the transverse moving wedge block (33) is an abutting end, the abutting end is used for abutting the face gear after extending out of the opening of the transverse slideway (312), the other end of the transverse moving wedge block (33) is a bevel end, and the bevel end is used for being matched with the upper end bevel of the lifting wedge block (32).

3. The face gear clamp according to claim 2, wherein the traversing wedge (33) comprises a post rod section (331) and a rear seat section (332) which are transversely fixed together, the transverse slideway (312) comprises a first transverse slideway (313) and a second transverse slideway (314) which are mutually communicated, and the section outer edge of the second transverse slideway (314) exceeds the section outer edge of the first transverse slideway (313); the abutting end of the transverse moving wedge block (33) is positioned on the ejector rod section (331), and the inclined surface end of the transverse moving wedge block (33) is positioned on the rear seat section (332); the section of the rear seat section (332) is matched with the section of the second transverse slideway (314), the rear seat section (332) is in sliding fit with the second transverse slideway (314), and the ejector rod section (331) freely slides in the first transverse slideway (313).

4. The face gear clamp according to claim 2, wherein the end of the abutting end of the traversing wedge (33) is an arc-shaped surface (333) matching the outer peripheral surface of the face gear.

5. The face gear clamp according to claim 1, further comprising a number of outer circle pressing members for pressing the face gear, the number of the outer circle pressing members being the same as the number of the outer circle clamping members, the outer circle pressing members and the outer circle clamping members being alternately arranged with each other, all the outer circle pressing members being uniformly arranged around the axis of the positioning shaft (22); the excircle compresses tightly the subassembly and includes:

the support frame (41) is fixedly connected to the fixed seat (11);

the compressing rod (42) is in threaded connection on the supporting frame (41), the compressing rod (42) is in inclined arrangement, one end of the compressing rod (42) is a control end, a rotating handle (43) is arranged at the control end, the other end of the compressing rod (42) is a compressing end used for being abutted against the outer peripheral surface of the face gear, the compressing end is inclined downwards, the head of the compressing end is conical, and line contact is formed when the head of the compressing end is abutted against the outer peripheral surface of the face gear.

6. The face gear clamp of claim 5, wherein the number of said outer circle pressing assemblies and said outer circle clamping assemblies is three or four.

7. The face gear clamp according to claim 1, wherein the first mounting hole (111) on the fixing seat (11) is a through hole, and a counter bore is arranged at the lower end opening of the first mounting hole (111); the inner circle positioning mechanism further comprises a first connecting plate (24), the first connecting plate (24) is connected to the fixing seat (11) and is arranged in the counter bore, and the first hydraulic cylinder (21) is fixedly connected to the first connecting plate (24).