CN212977931U - Inner hole grinding clamp for roller seat - Google Patents

Abstract

The utility model relates to a roller seat inner hole grinding clamp, which comprises a clamp body, a positioning block, a pressing block and a bushing; the left end of the clamp body is installed in a taper hole of a machine tool headstock, a bushing is fixed in a vertical through hole in the clamp body, a positioning block is arranged on one side of the clamp body and is connected with the clamp body through bolts and is circumferentially positioned by pins, a first through hole is formed in the center of the positioning block, a first positioning boss is arranged on one side of the positioning block, a U-shaped straight groove is formed in the middle of the boss, the side wall of the groove is perpendicular to a horizontal plane, a first concave arc surface is arranged at the top of the first positioning boss, and; the pressing block is arranged on the other side of the clamp body and is connected with the clamp body through a bolt, a through hole II is formed in the center of the pressing block, a positioning boss II is arranged on one side of the pressing block, a concave arc surface II is arranged at the top of the boss, and the pressing block and the concave arc surface on the positioning block are combined to form a circular machining hole, so that a workpiece can be conveniently machined; the grinding processing can be carried out on the inner circle grinding machine of the workpiece, and the tolerance of the hole shape position after grinding processing can meet the requirement.

Description

Inner hole grinding clamp for roller seat

Technical Field

The utility model relates to a hole of gyro wheel seat grinds processing technology field in the fuel injection system, concretely relates to anchor clamps are ground to gyro wheel seat hole.

Background

The inner hole processing method of the roller seat in the fuel injection system is to position by utilizing the flat position of the workpiece roller seat, and the inner hole is processed by linear cutting, so that the form and position tolerance of the inner hole can not be ensured to meet the requirement in the processing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a gyro wheel seat hole grinds anchor clamps, utilizes the outer of work piece gyro wheel seat

The three elements of the diameter, the end face and the flat position are positioned, so that the grinding processing of the workpiece on an inner circle grinding machine can be realized, and the tolerance of the hole shape after the grinding processing can meet the requirement.

According to the utility model provides a technical scheme, gyro wheel seat hole grinds anchor clamps and includes: a clamp body,

A positioning block, a pressing block and a bushing; the right side of the clamp body is provided with a vertical through hole; the bushing is fixed in the vertical through hole in the clamp body, the positioning block is arranged below the right side of the clamp body, one side of the positioning block is provided with a first positioning boss, and the first positioning boss extends into the axial hole of the bushing; the pressing block is arranged on the upper side of the right side of the clamp body, a second positioning boss is arranged on one side of the pressing block, and the second boss extends into the axial hole of the bushing.

The left end of the clamp body is of a conical structure, a threaded hole, a through hole and an inner hole are sequentially formed in the clamp body from left to right, and a horn mouth connected with the inner hole is formed in the right end of the clamp body; the vertical through hole penetrates through the inner hole; the inner hole is perpendicular to the axis of the vertical through hole.

A positioning hole for inserting a pin column and a plurality of lower threaded holes in threaded connection with a bolt are formed in the lower surface of the right side of the clamp body; an upper threaded hole is formed in the right side of the fixture body.

The center of the positioning block is provided with a first through hole, the middle of the first positioning boss is provided with a U-shaped straight groove, the side wall of the U-shaped straight groove is perpendicular to the horizontal plane, the groove width is matched with the size of the flat surface of a workpiece, the edge side of the bottom of the U-shaped straight groove is provided with a first concave ring, the outer side of the first positioning boss is arc-shaped, the top of the boss is provided with a first concave arc surface, the bottom surface of the first positioning boss is the horizontal plane, and the outer edge of the bottom surface is provided with; the bottom surface of the positioning block is provided with a plurality of bolt mounting holes and 1U-shaped positioning groove, the bolt mounting holes are connected with bolts, and the pin columns are located in the U-shaped positioning grooves.

A second through hole is formed in the center of the pressing block and is coaxial with the through hole in the positioning block, 2 waist-shaped holes are formed in the bottom surface of the pressing block, the second waist-shaped holes are formed by rotating the first waist-shaped holes 180 degrees around the center of the second through hole, and the waist-shaped holes are respectively connected with bolts; and a second positioning boss is arranged on one side of the pressing block.

The top of the second positioning boss is provided with a second concave arc surface, and the root of the second positioning boss is provided with a concave circular ring R.

The end surface of the top of the second positioning boss is a horizontal plane and is parallel to the bottom surface; and a concave circular ring V is arranged at the root part of the two positioning bosses.

An axial hole is formed in the center of the bushing along the axial direction, a third through hole is formed in the center of the bushing along the horizontal direction, and the inner diameters of the axial hole and the third through hole are matched with the size of an inner hole of a workpiece; the outer diameter of the lining and the inner diameter of the vertical through hole in the clamp body form a close fit relation.

The utility model has the beneficial technical effects that:

the utility model discloses gyro wheel seat hole grinds anchor clamps and utilizes the external diameter, terminal surface and the three key element in flat position of work piece gyro wheel seat to fix a position, can realize including the work piece carry out abrasive machining on the circle grinding machine, the hole shape position tolerance after the abrasive machining all can reach the requirement.

Drawings

Fig. 1 is a schematic structural view of a roller seat inner hole grinding fixture disclosed in the present application.

Fig. 2 is a left side sectional view of fig. 1.

Fig. 3 is a view from direction a of fig. 1.

Fig. 4 is a schematic structural view of the clamp body.

Fig. 5 is a left side sectional view of fig. 4.

Fig. 6 is a view from direction B of fig. 4.

Fig. 7 is a view in the direction C of fig. 4.

Fig. 8 is a schematic structural diagram of the positioning block.

Fig. 9 is a left side sectional view of fig. 8.

Fig. 10 is a top view of fig. 8.

Fig. 11 is a sectional view of a portion P of fig. 8.

Fig. 12 is a sectional view of a portion Q of fig. 8.

Fig. 13 is a schematic structural view of the compact.

Fig. 14 is a left side sectional view of fig. 13.

Fig. 15 is a top view of fig. 13.

Fig. 16 is a sectional view of the portion R of fig. 13.

Fig. 17 is a schematic structural view of the mandrel.

FIG. 18 is a cross-sectional view taken at the position S of FIG. 17

Fig. 19 is a schematic view of the construction of the bushing.

Fig. 20 is a top cross-sectional view of fig. 19.

FIG. 21 is a schematic view of another alternative roller mount inner bore grinding fixture disclosed herein.

Fig. 22 is a left side sectional view of fig. 21.

Fig. 23 is a view from direction D of fig. 21.

Fig. 24 is a schematic structural view of another positioning block.

Fig. 25 is a left side sectional view of fig. 24.

Fig. 26 is a top view of fig. 24.

Fig. 27 is a cross-sectional view taken at the T-point in fig. 24.

Fig. 28 is a sectional view of the U-portion of fig. 24.

Fig. 29 is a schematic structural view of another compact.

Fig. 30 is a top view of fig. 29.

Fig. 31 is a cross-sectional view of the V portion of fig. 29.

FIG. 32 is a schematic view of another core rod.

FIG. 33 is a cross-sectional view taken along line W of FIG. 32

Detailed Description

The following describes the present invention with reference to the accompanying drawings.

Referring to fig. 1 to 33, the utility model discloses a roller seat bore grinding jig of the present application includes two kinds of embodiments:

the first embodiment is as follows: comprises a clamp body 1, a positioning block 4, a pressing block 3 and a lining 2; the left side end of the clamp body 1 is of a conical structure and is fixedly arranged in a conical hole of a machine tool headstock through a threaded hole 10, the threaded hole 10, a through hole 11 and an inner hole 12 are sequentially arranged in the clamp body 1 from left to right, and the end part of the right side of the clamp body 1 is provided with a horn mouth 9 connected with the inner hole 12; a vertical through hole 13 is formed in the right side of the fixture body 1, the vertical through hole 13 penetrates through the inner hole 12, and the axes of the vertical through hole 13 are perpendicular to each other;

the bush 2 is fixed in a vertical through hole 13 in the clamp inner body 1 and is in tight fit connection; 4 lower threaded holes 16 and 1 positioning hole 14 are arranged below the right side of the fixture body 1 and are connected with the pin 8; two upper threaded holes 15 are formed in the upper portion of the right side of the fixture body 1, and the upper threaded holes 15 are symmetrically distributed on two sides of the hole 13;

the positioning block 4 is positioned below the right side of the clamp body 1, is fixedly connected with the clamp body 1 through a bolt 6, is circumferentially positioned by a pin 8, a through hole I19 is formed in the center of the positioning block 4, a positioning boss I18 is arranged on one side of the positioning block 4, a U-shaped straight groove 20 is formed in the middle of the positioning boss I18, the side wall of the U-shaped straight groove 20 is perpendicular to the horizontal plane, the groove width is matched with the size of the flat surface of the workpiece 5, positioning is carried out by using the U-shaped straight groove, a concave circular ring I Q is arranged on the edge side of the bottom of the U-shaped straight groove 20, the workpiece 5 is in full contact with the groove bottom, positioning accuracy is guaranteed, the outer side of the positioning boss I18 is arc-shaped and is matched with the inner surface of the bushing 2, a concave circular arc surface I21 is arranged on the top of the boss, the purpose that an inner hole is not interfered with, the axial directions are ensured to be mutually vertical, and the first positioning boss 18 extends into the axial hole 30 of the bush 2; the bottom surface of the positioning block 4 is provided with 4 bolt mounting holes 17 and 1U-shaped positioning groove 22, the bolt mounting holes 17 are connected with the bolts 6, and the pin columns 8 are positioned in the U-shaped positioning grooves 22.

The pressing block 3 is positioned above the right side of the fixture body 1, a second through hole 23 is formed in the center of the pressing block 3 and is coaxial with the first through hole 19 in the positioning block 4, 2 waist-shaped holes 25 are formed in the bottom surface of the pressing block 3, the second waist-shaped holes are formed by rotating the first waist-shaped holes 180 degrees around the center of the second through hole 23, and the waist-shaped holes 25 are fixedly connected with the fixture body 1 through bolts 7; and one side of the pressing block 3 is provided with a second positioning boss 48, and the second boss 48 extends into the axial hole 30 of the bushing 2.

The second 48 tops of the positioning bosses on the pressing block 3 are provided with the second 24 concave arc surfaces, the purpose is that the inner hole is not interfered with a cutter during machining, the root part is provided with a concave circular ring R, and the purpose is to enable the pressing block 3 to be in full contact with the clamp body 1, so that the positioning precision is ensured.

One end of the core rod 26 is provided with a top rod 27, the front end of the top rod 27 is thin, the core rod 26 is provided with a limiting circular boss 28, and a concave circular ring S is arranged at the joint of the top rod 27 and the limiting circular boss 28, so that the side surface of the limiting circular boss 28 is fully attached to the contact surface of the positioning block 4, the acting force of the core rod 26 is ensured not to incline, and the workpiece is stressed uniformly.

During machining, a workpiece 5 is placed into the bushing 2, the flat surface of the workpiece 5 is clamped into the U-shaped straight groove of the positioning block 4, the bottom surface plane of the workpiece 5 is in contact with the bottom surface of the U-shaped straight groove of the positioning block 4, and then the pressing block 3 is installed to perform inner hole grinding; and after the machining is finished, the pressing block 3 is disassembled, the mandril 27 of the mandrel 26 extends into the first central through hole 19 of the positioning block 4 until the limiting table 28 is contacted with the positioning block 4, and the workpiece 5 can be withdrawn from the fixture and enter the next machining process.

Example two: comprises a clamp body 1, a positioning block 33, a pressing block 31 and a lining 2; the left side end of the clamp body 1 is of a conical structure and is fixedly arranged in a conical hole of a machine tool headstock through a threaded hole 10, the threaded hole 10, a through hole 11 and an inner hole 12 are sequentially arranged in the clamp body 1 from left to right, and the end part of the right side of the clamp body 1 is provided with a horn mouth 9 connected with the inner hole 12; a vertical through hole 13 is formed in the right side of the fixture body 1, the vertical through hole 13 penetrates through the inner hole 12, and the axes of the vertical through hole 13 are perpendicular to each other;

the bush 2 is fixed in a vertical through hole 13 in the clamp inner body 1 and is in tight fit connection; the first side of the fixture body 1 is provided with 4 lower threaded holes 16 and 1 positioning hole 14 which are connected with the pin 8; two upper threaded holes 15 are formed in the second side of the fixture body 1, and the upper threaded holes 15 are symmetrically distributed on two sides of the hole 13;

the positioning block 33 is positioned below the right side of the clamp body 1, is fixedly connected with the clamp body 1 through a bolt 34 and is positioned by a pin 8 in the circumferential direction, the center of the positioning block 33 is provided with a first through hole 41, one side of the positioning block 33 is provided with a first positioning boss 37, the middle of the first positioning boss 37 is provided with a U-shaped straight groove 36, the side wall of the U-shaped straight groove 36 is vertical to the horizontal plane, the groove width is matched with the size of the flat surface of the workpiece 32, the U-shaped straight groove is used for positioning, the edge side of the bottom of the U-shaped straight groove 36 is provided with a first concave circular ring U, the workpiece 32 is in full contact with the groove bottom, the positioning accuracy is ensured, the outer side of the first positioning boss 37 is arc-shaped and is matched with the inner surface of the bushing 2, the top of the first concave circular arc surface 40 is arranged at the top of the boss, the inner hole is not interfered, the axial directions are ensured to be mutually vertical, and the first positioning boss 37 extends into the axial hole 30 of the bush 2; the bottom surface of the positioning block 33 is provided with 4 bolt mounting holes 38 and 1U-shaped positioning groove 39, the bolt mounting holes 17 are connected with the bolts 34, and the pin columns 8 are positioned in the U-shaped positioning grooves 22.

The pressing block 31 is positioned above the right side of the fixture body 1, a through hole II 42 is formed in the center of the pressing block 31 and is coaxial with a through hole I41 in the positioning block 33, 2 waist-shaped holes 44 are formed in the bottom surface of the pressing block 31, the second waist-shaped hole is formed by rotating the first waist-shaped hole 180 degrees around the center of the through hole II 42, and the waist-shaped holes 44 are fixedly connected with the fixture body 1 through bolts 35; one side of the pressing block 31 is provided with a second positioning boss 43, and the second boss 43 extends into the axial hole 30 of the bushing 2.

The top end face of the second positioning boss 43 on the pressing block 31 is a horizontal plane and is parallel to the bottom face, the root of the second positioning boss 43 is provided with a concave circular ring V, and the purpose is to fully contact the bottom face of a workpiece when 2 workpieces 32 are placed in the bushing, so that the positioning precision is ensured.

An axial hole 30 is formed in the center of the bushing 2 along the axial direction, a third through hole 29 is formed in the center of the bushing 2 along the horizontal direction, the axial hole 30 is matched with the outer diameters of the workpiece 5 and the workpiece 32, the positioning precision is guaranteed, and the inner diameter of the third through hole 29 is matched with the machining size of the inner holes of the workpiece 5 and the workpiece 32; the outer diameter of the lining 2 and the inner diameter of the vertical through hole 13 in the fixture body 1 form a close fit relationship, so that the lining 2 is ensured to be firmly fixed.

An ejector rod 46 is arranged at one end of the core rod 45, the front end of the ejector rod 46 is thin, a limiting circular boss 47 is arranged on the core rod 45, a concave circular ring W is arranged at the joint of the ejector rod 46 and the limiting circular boss 47, the side face of the limiting circular boss 47 is fully attached to the contact face of the positioning block 33, the acting force of the core rod 45 is guaranteed not to incline, and the workpiece is stressed uniformly.

When the device is used, 2 workpieces 32 are symmetrically placed in the bushing 2, the flat surface of the lower workpiece 32 is clamped into the U-shaped straight groove of the positioning block 33, and the bottom surface plane of the workpiece 32 is in contact with the bottom surface of the U-shaped straight groove of the positioning block 33; the horizontal section of the upper workpiece 32 is in contact with the horizontal surface of the top of the second positioning boss 43 of the pressing block 31, and inner hole grinding processing is carried out after the pressing block 31 is installed; and after the machining is finished, the pressing block 31 is disassembled, the mandril 46 of the mandril 45 extends into the first central through hole 41 of the positioning block 33 until the limiting table 47 is contacted with the positioning block 33, and the workpiece 32 can be withdrawn from the fixture and enter the next machining process.

The application discloses gyro wheel seat hole grinds anchor clamps's concrete theory of operation as follows:

the inner hole grinding clamp of the roller seat is provided with the positioning boss on the positioning block, the middle of the positioning boss is provided with the U-shaped straight groove, the side wall of the U-shaped straight groove is vertical to the horizontal plane, the groove width is matched with the size of the flat surface of the workpiece, and the flat positioning of the workpiece is realized; the bottom of the U-shaped straight groove and the end surface of the positioning boss of the pressing block are horizontal planes and are attached to the horizontal section of the workpiece, so that the end surface of the workpiece is positioned; a bush is arranged in the clamp body, the inner diameter of the bush is matched with the outer diameter of the workpiece, and the outer diameter of the workpiece is positioned; after a workpiece is placed into a bushing of the clamp and a pressing block is installed, the workpiece can be accurately positioned by adopting 3 positioning elements, the positioning clamp can be installed on an internal grinding machine for grinding, and the tolerance of the ground hole shape can meet the requirement.

What has been described above is only a preferred embodiment of the present application, and the present invention is not limited to the above embodiments. It is to be understood that other modifications and variations directly derivable or suggested by those skilled in the art without departing from the spirit and scope of the present invention are to be considered as included within the scope of the present invention.

Claims (8)

1. The utility model provides a gyro wheel seat hole grinds anchor clamps which characterized in that, anchor clamps include: the clamp comprises a clamp body (1), positioning blocks (4, 33), pressing blocks (3, 31) and a bushing (2); a vertical through hole (13) is formed in the right side of the clamp body (1); the bushing (2) is fixed in a vertical through hole (13) in the fixture body (1), the positioning blocks (4 and 33) are arranged below the right side of the fixture body (1), one sides of the positioning blocks (4 and 33) are provided with first positioning bosses (18 and 37), and the first positioning bosses (18 and 37) extend into axial holes (30) of the bushing (2); the clamp is characterized in that the compression blocks (3 and 31) are arranged on the right upper surface of the clamp body (1), one sides of the compression blocks (3 and 31) are provided with second positioning bosses (48 and 43), and the second bosses (48 and 43) extend into the axial holes (30) of the bushing (2).

2. The roller seat inner hole grinding clamp according to claim 1, wherein the left side end of the clamp body (1) is of a conical structure, a threaded hole (10), a through hole (11) and an inner hole (12) are sequentially arranged in the clamp body (1) from left to right, and a bell mouth (9) connected with the inner hole (12) is arranged at the right side end of the clamp body (1); the vertical through hole (13) passes through the inner hole (12); the inner hole (12) is perpendicular to the axis of the vertical through hole (13).

3. The roller seat inner hole grinding clamp according to claim 1, characterized in that a positioning hole (14) for inserting a pin column (8) and a plurality of lower threaded holes (16) screwed with bolts are arranged below the right side of the clamp body (1); an upper threaded hole (15) is formed in the right side upper surface of the fixture body (1).

4. The inner hole grinding clamp for the roller seat according to claim 1, wherein a first through hole (19, 41) is formed in the center of the positioning block (4, 33), a U-shaped straight groove (20, 36) is formed in the middle of the first positioning boss (18, 37), the side wall of the U-shaped straight groove (20, 36) is perpendicular to the horizontal plane, the groove width is matched with the size of the flat plane of the workpiece (5, 32), a first concave circular ring (Q, U) is arranged on the edge side of the bottom of the U-shaped straight groove (20, 36), the outer side surface of the first positioning boss (18, 37) is in a circular arc shape, a first concave circular arc surface (21, 40) is arranged at the top of the boss, the bottom surface of the first positioning boss (18, 37) is the horizontal plane, and a second concave circular ring (P, T); the bottom surfaces of the positioning blocks (4 and 33) are provided with a plurality of bolt mounting holes (17 and 38) and 1U-shaped positioning groove (22 and 39), the bolt mounting holes (17 and 38) are connected with bolts, and a pin column is arranged in the U-shaped positioning groove.

5. The roller seat inner hole grinding clamp according to claim 1, wherein a second through hole (23, 42) is formed in the center of the pressing block (3, 31) and is coaxial with the first through hole (19, 41) in the positioning block (4, 33), 2 kidney-shaped holes (25, 44) are formed in the bottom surface of the pressing block (3, 31), the second kidney-shaped hole is formed by rotating the first kidney-shaped hole 180 degrees around the center of the second through hole (23, 42), and the kidney-shaped holes (25, 44) are respectively connected with bolts; and a second positioning boss (48, 43) is arranged on one side of each compression block (3, 31).

6. The inner hole grinding clamp for the roller seat according to claim 4, wherein the second positioning boss (48) is provided with a second concave circular arc surface (24) at the top and a concave circular ring R at the root.

7. The roller seat inner hole grinding fixture according to claim 4, wherein the top end surface of the second positioning boss (43) is a horizontal plane and is parallel to the bottom surface; the root of the second positioning boss (43) is provided with a concave circular ring V.

8. The roller seat inner hole grinding clamp according to claim 1, characterized in that an axial hole (30) is axially formed in the center of the bushing (2), a third through hole (29) is horizontally formed in the center of the bushing (2), and the inner diameters of the axial hole (30) and the third through hole (29) are matched with the inner hole size of a workpiece (5, 32); the outer diameter of the lining (2) and the inner diameter of a vertical through hole (13) in the fixture body (1) form a close fit relation.

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