Locating and clamping tool for lathe machining of square rotating piece

Abstract

The utility model relates to a locating and clamping tool for lathe machining of a square rotating piece, two adjacent side faces of the square rotating piece are datum planes, the clamping tool comprises a locating piece and a screw, the locating piece is cylindrical, and the center of the locating piece is provided with a profiling groove for the square rotating piece to stretch into. The two side edges of the profiling groove are positioning faces corresponding to the two reference faces of the square rotating piece, and the distance between the positioning faces and the center line of the positioning piece is matched with the distance between the corresponding reference faces and the center of the square rotating piece. Screw holes extending to the outer side face of the positioning piece are formed in the other two side faces of the profiling groove, and the screws are arranged in the screw holes; the square rotating piece is arranged in the profiling groove, the two datum planes abut against the two positioning faces respectively, and the two screws penetrate through the screw holes to abut against the other two side faces of the square rotating piece respectively, so that the center line of the square rotating piece coincides with the center line of the positioning piece, the dead center of the square rotating piece is rapidly positioned, and the overall machining production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of square rotary piece positioning and clamping tool of lathe processing, belong to tooling technical field of lathe. BACKGROUND

[0002] At present, when square rotary piece is machined in hole in lathe, chuck clamping workpiece is needed first, since the different edge distance of workpiece is different, thus after chuck clamping workpiece, workpiece center is not easy to find accurately.

[0003] As Figure 1 Square rotary piece needs to be machined in hole 11 in center, then there is very high tolerance requirement for hole 11 relative to reference surface 12 and reference surface 13, four-jaw chuck is generally used for clamping at this time, four clamping claws correspond to four outer surfaces, but since its cross section is not standard square, and blank of previous process is also consistent with offset amount, thus position of four clamping claws needs to be adjusted multiple times when clamping, finally center can be found, and hole boring operation can be carried out, which is very time-consuming and laborious. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of clamping tool that square rotary piece center can be accurately positioned to solve the problems in the prior art.

[0005] In order to achieve the above purpose, the technical scheme provided by the utility model is as follows: a kind of square rotary piece positioning and clamping tool of lathe processing, two adjacent sides of the square rotary piece are reference surface;The clamping tool includes positioning member and screw, the positioning member is cylindrical and has a profiling groove in the center for the square rotary piece to extend into, the two sides of the profiling groove are positioning surfaces corresponding to the two reference surfaces of the square rotary piece, and the distance from the positioning surface to the center line of the positioning member matches the distance from the corresponding reference surface to the center of the square rotary piece;The other two side surfaces of the profiling groove are provided with screw holes extending to the outer surface of the positioning member, and the screw is arranged in the screw hole;The square rotary piece is placed in the profiling groove, the two reference surfaces are respectively abutted with the two positioning surfaces, and the two screws are respectively abutted with the other two side surfaces of the square rotary piece through the screw hole.

[0006] Further design of the above technical scheme is as follows: the shape of the profiling groove matches the shape of the square rotary piece, and the size of the profiling groove is larger than the size of the square rotary piece.

[0007] The two side surfaces of the profiling groove provided with screw holes are respectively provided with a pressing block groove, a pressing block is arranged in the pressing block groove, and the screw pushes the pressing block to abut against the square rotary piece through the screw hole.

[0008] The pressing block groove extends from the front end to the rear end of the corresponding side surface of the profiling groove.

[0009] The width of the pressing block matches the pressing block groove, and the pressing block is slidingly arranged in the pressing block groove.

[0010] The positioning surface of the profiling groove is provided with a hollow groove extending from the front end to the rear end of the corresponding positioning surface of the profiling groove and arranged in the middle of the corresponding positioning surface.

[0011] The two positioning surfaces of the profiling groove are arranged in parallel with the axis of the positioning member, and the arrangement directions of the two positioning surfaces are perpendicular to each other.

[0012] Each side surface of the profiling groove provided with screw holes is provided with at least two screw holes, the arrangement directions of the screw holes corresponding to the same side surface are the same, and the arrangement directions of the screw holes on the two side surfaces of the profiling groove are perpendicular to each other.

[0013] The clamping tool further comprises a chuck, and the chuck is provided with a plurality of clamping claws.

[0014] The chuck is a three-claw chuck or a four-claw chuck.

[0015] The clamping tool has the advantages that:

[0016] The clamping tool of the utility model opens the profiling groove for profiling the square rotary member in the center of the positioning member, and sets two positioning surfaces matched with the two reference surfaces of the square rotary member in the profiling groove, sets the distance of the positioning surface from the center line of the positioning member to be the same as the distance of the corresponding reference surface from the center of the square rotary member, and pushes the square rotary member against the two positioning surfaces through the screw, so that the center line of the square rotary member coincides with the center line of the positioning member; the cylindrical positioning member is clamped by the chuck, the center of the positioning member can be easily found, the normal center of the square rotary member part is quickly positioned, and the overall production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the square rotary member;

[0018] Figure 2 It is a schematic view of the clamping tool of the utility model;

[0019] Figure 3 It is a schematic view of the clamping state of the clamping tool of the utility model;

[0020] Figure 4 It is a front view of Figure 3 ;

[0021] Figure 5 It is a schematic view of the positioning member in Figure 2 ;

[0022] Figure 6 It is a front view of Figure 4 ;

[0023] Figure 7The processing state schematic diagram of the clamping tool is shown in the figure;

[0024] In the figure: 1-square rotary part, 11-inner hole, 12, 13-reference surface, 2-positioning part, 21-pressing block groove, 22-hollow groove, 23-screw hole, 24, 25-positioning surface, 3-pressing block, 4-screw, 5-chuck, 6-power tool turret, 7-turning tool, 8-clamping jaw. DETAILED DESCRIPTION

[0025] The utility model will be explained in detail below in combination with the drawings and specific embodiments. Embodiment one

[0026] The lathe processing square rotary part positioning and clamping tool of the embodiment, as shown in Figure 2 and Figure 3 , comprises a positioning part 2 and a screw 4.

[0027] In combination with Figure 5 and Figure 6 , the positioning part 2 is cylindrical and is provided with a profiling groove in the center for the square rotary part 1 to extend into, the two side edges of the profiling groove are positioning surfaces 24 and 25 corresponding to the two reference surfaces 12 and 13 of the square rotary part, and the distance from the positioning surfaces to the center line of the positioning part 2 is the same as the distance from the corresponding reference surfaces to the center of the square rotary part 1; the other two side surfaces of the profiling groove are provided with screw holes 23 extending to the outer side surface of the positioning part, and the screw 4 is arranged in the screw hole 23.

[0028] In combination with Figure 4 , when the clamping tool clamps the square rotary part 1, the square rotary part 1 is placed in the profiling groove, the two reference surfaces are respectively abutted against the two positioning surfaces, then the two screws 4 pass through the screw holes 23 and are respectively abutted against the other two side surfaces of the square rotary part 1, so that the center line of the square rotary part 1 coincides with the center line of the positioning part 2, thereby positioning the center of the square rotary part. Embodiment two

[0029] On the basis of embodiment one, the embodiment is further designed, as shown in Figure 5 and Figure 6 , in the embodiment, the shape of the profiling groove matches the shape of the square rotary part 1. The two side surfaces of the profiling groove provided with the screw holes 23 are respectively provided with pressing block grooves 21, in combination with Figure 2 and Figure 3 , the pressing block grooves 21 are provided with pressing blocks 3, and the screw 4 can push the pressing blocks 3 to abut against the square rotary part 1 after passing through the screw holes 23, and lock the pressure applied to the pressing blocks 3.

[0030] The pressure block groove 21 extends from the front end to the rear end of the corresponding side of the contour groove, and the width of the pressure block 3 matches the pressure block groove 21. When in use, the pressure block 3 is inserted into the pressure block groove 21 and can be slidably set in the pressure block groove 21 to bear the pressure of the screw 4 and push against the square rotating part 1, so that the reference surface of the square rotating part 1 is in contact with the positioning surface, thereby positioning the center of the square rotating part 1.

[0031] The positioning surfaces 24 and 25 of the contour groove are also provided with a cut-out groove 22. The cut-out groove 22 is located in the middle of the corresponding positioning surface and extends from the front end to the rear end of the corresponding positioning surface of the contour groove. The design of the positioning groove 22 can reduce the mating area between the positioning surface and the reference surface and prevent over-positioning.

[0032] In this embodiment, the two positioning surfaces of the contour groove are parallel to the axis of the positioning component 2, and the positioning surfaces are perpendicular to each other. Each side of the contour groove with a screw hole has two screw holes 23, and the screw holes 23 on the same side are in the same direction. The screw holes 23 on the two sides of the contour groove are perpendicular to each other.

[0033] The dimensions of the contour groove are slightly larger than the dimensions of the square rotating part 1. Therefore, when clamping the square rotating part 1, the two reference surfaces abut against the two positioning surfaces, and gaps are formed between the other surfaces and the sides of the square rotating part 1. Figure 4 As shown in A, B, and C, the gap design facilitates the insertion of parts while preventing them from falling out, and also facilitates the insertion of the pressure block 3.

[0034] Combination Figure 7 As shown, after the clamping fixture clamps the square rotating part 1, the cylindrical positioning part 2 is clamped by the three-jaw or four-jaw chuck 5. After adjusting the position of the jaw 8 to adjust the center position of the positioning part 2 once, the square rotating part 1 can be clamped directly without adjusting the position of the jaw 8 of the chuck 5, thus improving production efficiency.

[0035] After the chuck 5 clamps the positioning part 2 and adjusts its center position, the turning tool 7 on the power turret 6 of the milling machine tool is used to machine the inner hole at the center of the square rotating part 1.

[0036] The technical solutions of this utility model are not limited to the above embodiments. All technical solutions obtained by equivalent substitution fall within the scope of protection claimed by this utility model.

Claims

1. A lathe processing square rotary workpiece positioning and clamping tool, two adjacent sides of the square rotary workpiece are reference surfaces, characterized in that: The clamping tool comprises a positioning member and a screw, the positioning member is cylindrical and has a profiling groove in the center for the square rotary member to extend into, two side edges of the profiling groove are positioning surfaces corresponding to two reference surfaces of the square rotary member, the distance from the positioning surface to the center line of the positioning member matches the distance from the corresponding reference surface to the center of the square rotary member; The other two side surfaces of the profiling groove are provided with screw holes extending to the outer surface of the positioning member, and the screw is arranged in the screw hole; The square rotary member is placed in the profiling groove, and the two reference surfaces respectively abut against the two positioning surfaces, and the two screws respectively abut against the other two side surfaces of the square rotary member through the screw holes.

2. The lathe machining square rotary part positioning and clamping tooling apparatus as claimed in claim 1, wherein: The shape of the profiling groove matches the shape of the square rotary member, and the size of the profiling groove is larger than the size of the square rotary member.

3. The lathe machining square rotary workpiece positioning and clamping tooling of claim 1, wherein: The two side surfaces of the profiling groove provided with the screw holes are respectively provided with a pressing block groove, and the pressing block groove is provided with a pressing block, and the screw pushes the pressing block to abut against the square rotary member through the screw hole.

4. The lathe machining square rotary workpiece positioning and clamping tooling of claim 3, wherein: The pressing block groove extends from the front end of the corresponding side surface of the profiling groove to the rear end.

5. The lathe machining square rotary workpiece positioning and clamping tooling of claim 4, wherein: The width of the pressing block matches the pressing block groove, and the pressing block is slidingly arranged in the pressing block groove.

6. The lathe machining square rotary workpiece positioning and clamping tooling fixture of claim 1 wherein: The positioning surface of the profiling groove is provided with a hollow groove, the hollow groove extends from the front end of the corresponding positioning surface of the profiling groove to the rear end, and is arranged in the middle part of the corresponding positioning surface.

7. The lathe machining square rotary workpiece positioning and clamping tooling fixture of claim 6, wherein: The setting direction of the two positioning surfaces of the profiling groove is parallel to the axis of the positioning member, and the setting direction of each two positioning surfaces is perpendicular to each other.

8. The lathe machining square rotary workpiece positioning and clamping tooling fixture of claim 1 wherein: Each side surface of the profiling groove provided with the screw hole is provided with at least two screw holes, the setting direction of the screw holes corresponding to the same side surface is the same, and the setting direction of the screw holes on the two side surfaces of the profiling groove is perpendicular to each other.

9. The lathe machining square rotary workpiece positioning and clamping tooling apparatus according to one of claims 1 to 8, characterized in that: Further comprising a chuck, the chuck is provided with a plurality of clamping claws, and the plurality of clamping claws clamp the positioning member.

10. The lathe machining square rotary workpiece positioning and clamping tooling of claim 9, wherein: The chuck is a three-jaw chuck or a four-jaw chuck.

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