Stator curve grinding machine tool clamp

Abstract

The utility model discloses a stator curve grinding machine work fixture which comprises a base and a clamping jaw mechanism, the clamping jaw mechanism is arranged in the circumferential direction of the base, the clamping jaw mechanism comprises a clamping jaw piece and a clamping base, the clamping base is installed on the base, the clamping jaw piece can turn over relative to the clamping base, and the clamping jaw piece can turn over relative to the clamping base. The positioning ends of the clamping claw pieces are arranged towards the center of the base, the free ends of the clamping claw pieces are arranged towards the outer side, and a limiting structure is installed on the clamping base and located on the lower sides of the free ends of the clamping claw pieces so as to limit outward turning of the positioning ends of the clamping claw pieces. According to the stator curve grinding machine tool clamp, the back end face of the stator workpiece is clamped through the positioning end, so that the to-be-machined face of the stator workpiece is aligned with a grinding mechanism, the stator workpiece is clamped and positioned in the circumferential direction and the axial direction, the to-be-machined workpiece is clamped more stably through the clamp, and the machining precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of grinding machine processing technology especially a stator curve grinding machine frock clamp. BACKGROUND

[0002] The stator curve grinding machine is mainly suitable for processing the inner curve of the stator of vane pump, automobile steering assist pump, automobile air conditioner compressor, automobile fuel pump and the like. Before processing the inner curve of the stator, the stator is usually clamped by a frock clamp first to align the surface to be processed with the grinding mechanism, and the surface to be processed is ensured to be stable and not to slip, otherwise the processing precision will be affected. However, since the frock clamp in the prior art clamps the stator periphery, although the slip of the workpiece to be processed in the radial direction can be prevented, the axial movement of the workpiece to be processed still occurs, which results in that the surface to be processed of the stator and the grinding mechanism cannot be precisely aligned, the contact is unstable, the processing error is large, and the precision is reduced. SUMMARY

[0003] In order to overcome the defects of the prior art, the utility model provides a stator curve grinding machine frock clamp capable of stably clamping the stator workpiece.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of a stator curve grinding machine frock clamp, which comprises a base and a clamping jaw mechanism, the clamping jaw mechanism is arranged circumferentially along the base, and the clamping jaw mechanism comprises a clamping jaw piece and a clamping seat, the clamping seat is installed on the base, the clamping jaw piece can be turned over relative to the clamping seat, the positioning end of the clamping jaw piece is arranged towards the center of the base, the free end of the clamping jaw piece is arranged outward, a limiting structure is installed on the clamping seat, and the limiting structure is located on the downside of the free end of the clamping jaw piece to limit the outward turning of the positioning end of the clamping jaw piece.

[0005] Further, an installation shaft is arranged in the clamping seat, one shaft end of the installation shaft extends out of the clamping seat and is circumferentially connected with the clamping jaw piece, the positioning end and the free end are respectively located on the two sides of the installation shaft, and the other shaft end of the installation shaft is installed on a rotating disc.

[0006] Further, the rotating disc comprises a disc body, angular portions are arranged at intervals on the outer periphery of the disc body, the angular portions are locally extended from the outer edge of the disc body towards the radial end face, and the installation shaft is arranged in the angular portion.

[0007] Further, the clamping jaw piece comprises a clamping jaw piece body, a through slot is arranged in the middle part of the clamping jaw piece body, a connecting seat is inserted into the through slot, and the connecting seat is connected to the shaft end of the installation shaft by a fastener.

[0008] Further, the positioning end of the clamping jaw piece is provided with a tapered end portion which is gradually reduced, and the tapered end portion is connected with the clamping jaw piece body at one end and gradually extends downward at the other end.

[0009] Further, the positioning end and the free end are integrally connected with the two ends of the clamping jaw piece body respectively.

[0010] Further, the clamping jaw piece body is further provided with a connecting bolt, and the threaded segment of the connecting bolt is locked through the clamping jaw piece body, the connecting seat and the locking nut.

[0011] Further, the connecting seat is provided with an inner hole, and the fastener is threadedly connected with the shaft end after passing through the inner hole of the connecting seat.

[0012] Further, the outer circumferential surface of the mounting shaft is provided with a positioning groove which is radially arranged at the corresponding position of the base, and the base is provided with a positioning column which can slide radially along the mounting shaft.

[0013] Further, the one end of the positioning column which is away from the positioning groove is further provided with a plate body which is arranged in a T shape with the positioning column, and the base is provided with a through hole structure at the corresponding position of the plate body.

[0014] By means of the above scheme, the stator curve grinding machine tool clamp of the utility model clamps the back end face of the stator workpiece through the positioning end, aligns the surface to be machined of the stator workpiece with the grinding mechanism, clamps and positions the stator workpiece from the circumferential direction and the axial direction, and the clamp is more stable in clamping the workpiece to be machined, and the machining precision is improved.

[0015] The utility model will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] ATTACHED Figure 1 It is the structure perspective view of the embodiment of the utility model;

[0017] ATTACHED Figure 2 It is the structure top view of the embodiment of the utility model;

[0018] ATTACHED Figure 3 It is the B-B partial sectional view of the embodiment of the utility model;

[0019] ATTACHED Figure 4 It is the connecting structure schematic view of the clamping jaw piece and the rotating disc of the embodiment of the utility model;

[0020] Base 1, clamping jaw mechanism 2, grinding mechanism 3, clamping jaw piece 21, clamping seat 22, positioning end 211, free end 212, limiting structure 23, limiting column 231, mounting shaft 24, rotating disc 25, disc body 251, corner 252, clamping jaw piece body 213, through groove 214, connecting seat 26, inverted U-shaped groove 262, tapered end 211a, connecting bolt 27, inner hole 261, fastening bolt 28, positioning groove 241, positioning column 242, plate body 243, through hole structure 11. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] It should be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in the description of the present application are used for the purpose of illustration only and do not indicate the only embodiment.

[0023] In addition, the terms "first" and "second" are used only for the purpose of description and should not be understood as indicating or implying relative importance or implying the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0024] In the present application, unless otherwise explicitly specified and limited, the "on", "under", "above" and "over" of the first feature on the second feature can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the "on", "above" and "over" of the first feature on the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature on the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0025] Unless otherwise defined, all technical and scientific terms used in the application's specification have the same meaning as commonly understood by one of ordinary skill in the art to which the application pertains. The terminology used in the application's specification is for describing particular embodiments only and is not intended to be limiting of the application. The use of the terms "and / or" in the application's specification is intended to encompass all possibilities of combining one or more relevant items together or any of the items alone.

[0026] The specific embodiment of the utility model discloses Figures 1-4 As shown in a kind of stator curve grinding machine tool fixture, it includes pedestal 1 and clamping jaw mechanism 2, clamping jaw mechanism 2 is arranged along the circumference of pedestal 1, wherein, the grinding mechanism 3 of grinder is located in the center of pedestal 1, clamping jaw mechanism 2 includes clamping jaw piece 21 and clamping seat 22, clamping seat 22 is installed on pedestal 1, clamping jaw piece 21 can be overturned relative to clamping seat 22, the positioning end 211 of clamping jaw piece 21 is arranged towards the center of pedestal 1, the free end 212 of clamping jaw piece 21 is arranged towards outside, limiting structure 23 is installed on clamping seat 22, which is located at the downside of the free end 212 of clamping jaw piece 21, to limit the positioning end 211 of clamping jaw piece 21 to turn outwards.

[0027] It should be noted that the above-mentioned limiting structure 23 includes limiting column 231, the limiting column 231 is threaded in pedestal 1, and is fixed by lock nut, the height of the exposed part of limiting column 231 can be adjusted by lock nut, the exposed part of limiting column 231 is pressed under the free end 212 of clamping jaw piece 21, prevents clamping jaw piece 21 from turning outwards or upwards, so that the positioning end 211 is stably pressed on the end face of stator workpiece away from the end face (the other end face relative to the end face to be processed). In addition, the above-mentioned clamping jaw piece 21 can be overturned relative to clamping seat 22, which can facilitate the positioning and clamping of stator workpieces of different sizes.

[0028] Further setting, the installation shaft 24 is threaded in clamping seat 22, one shaft end of installation shaft 24 is out of clamping seat 22 and forms circumferential positioning connection with clamping jaw piece 21, the positioning end 211 and the free end 212 are located at the two sides of installation shaft 24 respectively, the other shaft end of installation shaft 24 is installed on turntable 25.

[0029] It should be noted that the above-mentioned clamping jaw piece 21 and installation shaft 24 form circumferential synchronous motion connection, through the drive of turntable 25, the positioning end 211 of clamping jaw piece 21 can be rotated to be separated from the pressing and clamping of stator workpiece, facilitating the putting in or taking out of stator workpiece, at the same time, through the rotation linkage of clamping jaw piece 21 and turntable 25, it is convenient for assembly line work.

[0030] Further, the rotating disc 25 comprises a disc body 251, and the disc body 251 is provided with angular portions 252 arranged at intervals on the outer periphery of the disc body 251, and the angular portions 252 are locally extended from the outer edge of the disc body 251 to the radial end face, and the mounting shaft 24 is arranged on the angular portions 252.

[0031] It should be noted that the rotating disc 25 is installed on the mounting shaft 24 through the protruding angular portions 252, so that the material of the rotating disc 25 can be saved, and the cost can be saved.

[0032] Further, the clamping jaw 21 comprises a clamping jaw body 213, and the middle portion of the clamping jaw body 213 is provided with a through slot 214, and the connecting seat 26 is inserted into the through slot 214, and the shaft end of the mounting shaft 24 is connected to the connecting seat 26 through the fastener.

[0033] It should be noted that the through slot 214 of the clamping jaw 21 is connected upward and downward, the connecting seat 26 plays a role of connecting the clamping jaw 21 and the mounting shaft 24, the lower end of the connecting seat 26 is provided with a reverse U-shaped groove 262, and the shaft end of the mounting shaft 24 is inserted into the reverse U-shaped groove 262, so that a more stable butt joint structure is formed.

[0034] Further, the positioning end 211 of the clamping jaw 21 has a tapered end portion 211a which is gradually reduced in width, and the tapered end portion 211a is in an intersecting relationship with the clamping jaw body 213 of the clamping jaw 21 at an included angle, one end of the tapered end portion 211a is connected with the clamping jaw body 213, and the other end of the tapered end portion 211a is gradually extended downward.

[0035] In the above structure, the positioning end 211 is pressed on the stator workpiece through the tapered end portion 211a which is gradually reduced in width.

[0036] Further, the positioning end 211 and the free end 212 are integrally connected with the two ends of the clamping jaw body 213, respectively.

[0037] It should be noted that the clamping jaw body 213, the positioning end 211 and the free end 212 are integrally formed, so that the strength of the clamping jaw 21 can be ensured.

[0038] Further, the clamping jaw body 213 is also provided with a connecting bolt 27, and the threaded segment of the connecting bolt 27 is locked through a lock nut after penetrating through the clamping jaw body 213 and the connecting seat 26.

[0039] It should be noted that the clamping jaw 21 is circumferentially positioned and matched with the mounting shaft 24 in a mode that the clamping jaw 21 penetrates through the clamping jaw body 213 and the connecting seat 26 along the radial direction through the connecting bolt 27, and meanwhile, the clamping jaw 21 can be flipped.

[0040] Further, the connecting seat 26 has an inner hole 261, and the fastener is threadedly connected with the shaft end after penetrating through the inner hole 261 of the connecting seat 26.

[0041] Need to explain, the fastener adopts the fastening bolt 28, the cap end of the fastening bolt 28 is located in the inner hole 261, and the threaded segment of the fastening bolt 28 is connected to the mounting shaft 24 after passing through the inner hole 261 and the inverted U-shaped groove 262.

[0042] Further arrangement, the outer circumferential surface of the mounting shaft 24 is provided with a positioning groove 241 corresponding to the base 1, and the base 1 is provided with a positioning column 242 which can slide radially along the mounting shaft 24.

[0043] Need to explain, the base 1 is also provided with a positioning column 242 which can limit the rotation of the mounting shaft 24.

[0044] Further arrangement, the end of the positioning column 242 away from the positioning groove 241 is also provided with a plate body 243, and the plate body 243 is arranged in a T shape with the positioning column 242, and the base 1 is provided with a through hole structure 11 corresponding to the plate body 243.

[0045] Need to explain, the end of the positioning column 242 is limited by the plate body 243 and the positioning groove 241, and the plate body 243 is driven to slide back and forth in the through hole structure 11 of the base 1 to drive the positioning column 242 to extend into or out of the positioning groove 241.

[0046] By using the above scheme, the stator curved surface grinding machine tool clamp of the utility model can make the surface to be machined of the stator workpiece align with the grinding mechanism 3 by clamping the back surface of the stator workpiece through the positioning end 211, and the stator workpiece is clamped and positioned from the circumferential direction and the axial direction, so that the clamp is more stable for clamping the workpiece to be machined, and the machining precision is improved.

[0047] The utility model is not limited to the above specific embodiment, and each technical feature of the above embodiment can be combined arbitrarily, in order to make the description simple, each technical feature in the above embodiment is not described all possible combinations, however, as long as the combination of these technical features does not exist contradiction, it should be considered that the range of the description is recorded in the utility model. According to the content disclosed in the utility model, those skilled in the art can use other various specific embodiments to implement the utility model, or any simple change or change is made by using the design structure and idea of the utility model, and falls within the protection scope of the utility model.

Claims

1. A stator curve grinder tooling fixture comprising a base and a jaw mechanism, the jaw mechanism being arranged circumferentially along the base, characterized in that, The clamping jaw mechanism comprises a clamping jaw piece and a clamping seat, the clamping seat is installed on the base, the clamping jaw piece can be turned over relative to the clamping seat, the positioning end of the clamping jaw piece is arranged towards the center of the base, the free end of the clamping jaw piece is arranged outward, and a limiting structure is installed on the clamping seat and located below the free end of the clamping jaw piece to limit the outward turning of the positioning end of the clamping jaw piece.

2. The stator curve grinder fixture of claim 1, wherein, An installation shaft is arranged in the clamping seat, one shaft end of the installation shaft extends out of the clamping seat and forms a circumferential positioning connection with the clamping jaw piece, the positioning end and the free end are respectively located on two sides of the installation shaft, and the other shaft end of the installation shaft is installed on the rotating disc.

3. The stator curve grinder fixture of claim 2, wherein, The rotating disc comprises a disc body, angular portions are arranged at intervals on the outer periphery of the disc body, the angular portions are locally extended from the outer edge of the disc body towards the radial end face, and the installation shaft is arranged in the angular portion.

4. The stator curve grinder fixture of claim 2, wherein, The clamping jaw piece comprises a clamping jaw piece body, a through groove is arranged in the middle of the clamping jaw piece body, a connecting seat is inserted into the through groove, and a fastener is connected to the shaft end of the installation shaft in the connecting seat.

5. The stator curve grinder fixture of claim 1, wherein, The positioning end of the clamping jaw piece has a tapered end portion which is gradually reduced, the tapered end portion forms an intersecting relationship with the clamping jaw piece body at an included angle, one end of the tapered end portion is connected to the clamping jaw piece body, and the other end of the tapered end portion is gradually extended downwards and inclined.

6. A stator curve grinder tooling fixture according to claim 4 or 5, characterized in that, The positioning end and the free end are respectively integrally connected to two ends of the clamping jaw piece body.

7. The stator curve grinder fixture of claim 4, wherein, The limiting structure comprises a limiting column, the limiting column is arranged in the base and is fixed through a locking nut, the exposed part of the limiting column is pressed below the free end of the clamping jaw piece to prevent the clamping jaw piece from turning outward or upward, a connecting bolt is further installed on the clamping jaw piece body, and the threaded section of the connecting bolt is locked through the locking nut after passing through the clamping jaw piece body and the connecting seat.

8. The stator curve grinder fixture of claim 4, wherein, The connecting seat has an inner hole, and the fastener is threadedly connected to the shaft end after passing through the inner hole of the connecting seat.

9. The stator curve grinder fixture of claim 2, wherein, A positioning groove is arranged on the outer peripheral surface of the installation shaft and corresponds to the base, and a positioning column which can slide radially along the installation shaft is installed in the base.

10. The stator curve grinder fixture of claim 9, wherein, One end of the positioning column away from the positioning groove is further provided with a plate body, the plate body is arranged in a T shape with the positioning column, and a through hole structure is arranged on the base and corresponds to the plate body.

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