CN217832964U

CN217832964U - Device for grinding high-precision multi-stage cylindrical workpiece by one-time clamping

Info

Publication number: CN217832964U
Application number: CN202221041858.9U
Authority: CN
Inventors: 刘洪根
Original assignee: Wuxi Six Machine Tool Co ltd
Current assignee: Wuxi Six Machine Tool Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-11-18
Anticipated expiration: 2032-05-05

Abstract

The utility model provides a device for clamping and grinding high-precision multi-stage cylindrical workpieces at one time, which comprises a frame body, wherein the left side and the right side of the frame body are respectively provided with a headstock and a tailstock which are positioned on the same horizontal line; one end of the telescopic driving shaft is installed with the headstock frame through the headstock connecting piece, and the other end of the telescopic driving shaft is inserted into the workpiece through the connecting and fixing unit to drive the workpiece to rotate; one end of the tailstock center is arranged on the tailstock, and the other end of the tailstock center is inserted into one end, far away from the headstock, of the workpiece to support and position; the connection fixing unit includes: the V-shaped spring is arranged in the telescopic driving shaft, and one end of the V-shaped spring is positioned on the telescopic driving shaft; the tilting driving block is sleeved on the V-shaped spring, the tilting driving block and the V-shaped spring are fixed through a pin shaft, and the top of the tilting driving block is clamped on an internal spline in the workpiece through the support of the V-shaped spring. The utility model can prevent the workpiece from moving during the installation, improve the fastening ability, ensure the consistency of rotation and ensure the high-precision grinding; the effect of grinding the front and the back of the workpiece can be achieved by one-time clamping.

Description

Device for grinding high-precision multi-stage cylindrical workpiece by one-time clamping

Technical Field

The utility model belongs to the technical field of automatic finish machining and specifically relates to a device of disposable clamping grinding high accuracy multistage excircle work piece and relates to a grinding high accuracy multistage work piece technical field.

Background

In current grinding process, all need the grinding to cylinder or both ends, need twice clamping usually, fall to turn over the direction and carry out the reposition clamping, can lead to the process loaded down with trivial details this moment, can't reach the requirement of product high accuracy, in addition, it is long consuming time, relatively troublesome.

Disclosure of Invention

In view of the above shortcoming of the prior art, the utility model aims to provide a device of many grades of excircle work pieces of disposable clamping grinding high accuracy for solve prior art's difficult point.

In order to realize above-mentioned purpose and other relevant purposes, the utility model provides a device of disposable clamping grinding high accuracy multistage excircle work piece, include:

the bicycle frame comprises a bicycle frame body, wherein a bicycle head frame 1 and a bicycle tail frame 2 which are positioned on the same horizontal line are respectively arranged on the left side and the right side in the bicycle frame body;

one end of the telescopic driving shaft 3 is installed with the headstock frame 1 through a headstock connecting piece, and the other end of the telescopic driving shaft 3 is inserted into the workpiece 4 through a connecting and fixing unit to drive the workpiece 4 to rotate;

one end of the tailstock center 5 is arranged on the tailstock 2, and the other end of the tailstock center 5 is inserted into one end, far away from the headstock 1, of the workpiece 4 to support and position;

a connection fixing unit including:

the V-shaped spring 6 is arranged in the telescopic driving shaft 3, and one end of the V-shaped spring 6 is positioned on the telescopic driving shaft 3;

the turnover driving block 7 is sleeved on the V-shaped spring 6, the turnover driving block 7 is fixed to the V-shaped spring 6 through a pin shaft 8, and the top of the turnover driving block 7 is clamped on an internal spline 9 inside the workpiece 4 through the support of the V-shaped spring 6.

According to preferred scheme, locomotive connecting piece includes:

the hollow center connecting piece 10 is hollow inside the hollow center connecting piece 10 and is used for penetrating the telescopic driving shaft 3;

the hollow center connecting piece 10 is provided with a connecting head 11, one end of the hollow center connecting piece close to the tailstock 2 is sintered with the connecting head 11, and the connecting head 11 is clamped into the workpiece 4 and is used for positioning the workpiece.

According to the preferred scheme, the hollow center connecting piece 10 is made of steel materials, and the connecting head 11 is made of hard gold-plated materials.

According to the preferred scheme, a dust ring 12 is arranged between the hollow center connecting piece 10, the connecting head 11 and the telescopic driving shaft 3.

According to the preferred scheme, one side of the hollow center connecting piece 10 close to the connecting head 11 is provided with an annular groove, the annular groove is correspondingly inserted into the end part of the connecting head 11, and the dust ring 12 is arranged in an avoiding space 13 on the inner side of the connecting head 11.

According to a preferred solution, the end of the connecting head 11 close to the work piece 4 is provided with a chamfer.

According to the preferred scheme, the tailstock center 5 adopts a pointed-end structure, and the tailstock center 5 is made of a hard gold-plated material.

According to preferred scheme, turn over and warp and drive piece 7 and include:

the connecting end 701 is internally provided with a mounting hole connected with the V-shaped spring 6 in advance;

the lead-in end 702 is integrally arranged at the top of the connecting end 701 and is provided with a chamfer;

a support end 703, said support end 703 extending towards a section of the lead-in end 702 near the head frame 1 forming an obtuse support structure with the lead-in end 702.

According to a preferable scheme, a transition end 704 is further arranged between the leading-in end 702 and the supporting end 703, and the upper surfaces of the leading-in end 702, the transition end 704 and the supporting end 703 form a structure with an obtuse angle between every two of three sections.

According to the preferred scheme, the telescopic driving shaft 3 is provided with a mounting groove 14 corresponding to the V-shaped spring 6, and the depth of the mounting groove 14 is smaller than the height of the V-shaped spring 6 in a compressed state.

According to the preferable scheme, the length of the mounting groove 14 is not less than that of the tilting driving block 7.

According to a preferred solution, the depth of the mounting groove 14 is not less than the height of the corner of the V-shaped spring 6.

The utility model adopts the frame body, the head connecting piece, the connecting and fixing unit, the telescopic driving shaft and the tailstock center, when in installation, the tilting driving block is compressed by the inner wall of the telescopic driving shaft and is clamped into the key groove of the internal spline, so that the workpiece can not move, the fastening capability is improved, the consistency of rotation is ensured, and the high-precision grinding is ensured; in addition, the effect of finishing front and back grinding of the workpiece by one-time clamping can be achieved.

The following description of the preferred embodiments for carrying out the present invention will be made in detail with reference to the accompanying drawings so that the features and advantages of the present invention can be easily understood.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged schematic view of a structure according to the present invention;

fig. 3 is a schematic view of the connection structure of the telescopic driving shaft, the V-shaped spring and the tilting driving block according to the present invention;

fig. 4 is a schematic view of an initial structure of the tilting driving block according to the present invention;

fig. 5 is a schematic structural view of the tilting drive block of the present invention after being mounted;

fig. 6 is an enlarged schematic view of the tilting driving block of the present invention after being mounted;

description of the reference symbols

1. A headstock; 2. a tailstock; 3. a telescopic driving shaft; 4. a workpiece; 5. a tailstock center; 6. a V-shaped spring; 7. the device comprises a tilting driving block 701, a connecting end 702, a leading-in end 703, a supporting end 704 and a transition end; 8. a pin shaft; 9. an internal spline; 10. a hollow center connecting piece; 11. a connector; 12. a dust ring; 13. avoiding a space; 14. and (4) mounting the groove.

Detailed Description

In order to make the technical solution of the present invention's purpose, technical solution and advantages clearer, the following description will be combined with the drawings of the specific embodiments of the present invention, to carry out clear and complete description on the technical solution of the embodiments of the present invention. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

Possible embodiments within the scope of the invention may have fewer parts, have other parts not shown in the figures, different parts, differently arranged parts or differently connected parts, etc. than the examples shown in the figures. Further, two or more of the components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as a plurality of separate components.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The utility model provides a device of many grades of excircle work pieces of disposable clamping grinding high accuracy for in the grinding technology, the utility model discloses do not do the restriction to the type of grinding product, nevertheless this disposable clamping's structure specially adapted has in the circular workpiece that needs the many grades of excircles of grinding.

Generally, the utility model provides a device of disposable clamping grinding high accuracy multistage excircle work piece mainly includes frame body, locomotive connecting piece, connects fixed unit, flexible driving shaft 3 and tailstock top 5. Wherein, can refer to fig. 1, which shows the arrangement relationship of the frame body, the head connecting piece, the connecting and fixing unit, the telescopic driving shaft 3 and the tailstock center 5.

Because the workpiece is cylindrical, the outer surface of the workpiece is required to be ground to be a multi-stage step-shaped structure, two ends of the workpiece are required to be ground, in order to avoid the situation that the workpiece is disassembled and turned around after one end of the workpiece is ground, and the multiple clamping is generated, therefore, the existing headstock 1 and the tailstock 2 which are positioned on the same horizontal line are used on the frame body, a non-rotating tailstock center 5 structure is adopted on the tailstock 2, one end of the tailstock center 5 is installed on the tailstock 2, the other end of the tailstock center 5 is inserted into one end, far away from the headstock 1, of the workpiece 4 to be supported and positioned, here, the telescopic driving shaft 3 is installed on the headstock 1 through a headstock connecting piece, one end of the telescopic driving shaft 3 is connected with a motor and an air cylinder on the frame body to realize the functions of rotating the telescopic driving shaft 3 and adjusting the back and forth movement, the other end of the telescopic driving shaft 3 is inserted into the workpiece 4 through a connecting and fixing unit to realize the purpose of driving the workpiece 4 to rotate, and finish the purpose of clamping the high-precision multi-stage cylindrical workpiece at one time.

What needs to be specifically described is a connection fixing unit, in order to be able to tightly connect the telescopic driving shaft 3 with the workpiece 4, an installation groove 14 formed by being recessed inwards is correspondingly arranged at the insertion end of the telescopic driving shaft 3 by using an internal spline 9 in the workpiece 3, one end of the installation groove 14, which is loaded with a V-shaped spring 6,V type spring 6, is located at the bottom of the inner side of the installation groove 14, and the other end of the installation groove is protruded out of the installation groove 14, in addition, a tilting driving block 7,V type spring 6 and a tilting driving block 7 are sleeved on the V-shaped spring 6 and fixed by a pin shaft 8, and the top of the tilting driving block 7 is clamped on the internal spline 9 in the workpiece 4 by a support of the V-shaped spring 6;

because the degree of depth of mounting groove 14 is less than the height that V type spring 6 is under compression state, the degree of depth of mounting groove 14 is not less than the height of V type spring 6 corner, the length of mounting groove 14 is not less than the length of turning up and warping drive piece 7, consequently, when connecting fixed unit not installation, turn up and warp drive piece 7 and by V type spring 6 ejecting mounting groove 14, after connecting fixed unit and stretching into internal spline 9, turn up and warp drive piece 7 and be compressed by the inner wall of flexible drive axle 3 and block in the keyway of internal spline 9, can not remove, in addition, turn up and warp drive piece 7 and can be supported by V type spring 6 anti-at the same time, the ability of fastening has been improved, guarantee rotatory uniformity, the assurance of high accuracy grinding.

As shown in fig. 4, 5 and 6, the tilting driving block 7 is specifically arranged to include a connecting end 701, a leading end 702, a supporting end 703 and a transition end 704, wherein the leading end 702, the supporting end 703 and the transition end 704 are all located at the top of the connecting end 701, and the connecting end 701 is used for being connected with the V-shaped spring 6 and is preset with a fixed mounting hole for a pin 8; because the leading-in end 702 is the first contact surface extending into the inside of the workpiece 4, for this reason, in order to effectively avoid the damage to the workpiece 4, the leading-in end 702 is arranged to be a structure with a chamfer, and then along the direction away from the workpiece 4, the transition end 704 and the support end 703 are sequentially arranged, because the upper surfaces of the leading-in end 702, the transition end 704 and the support end 703 form an obtuse angle structure between every two of three sections, for this reason, after the installation in place, the upper surface of the support end 703 is correspondingly attached to the inner surface of the workpiece 4 to play a supporting role, in addition, because the depth of the installation groove 14 is not less than the height of the corner of the V-shaped spring 6, after the tilting driving block 7 is compressed, the leading-in end 702 is located in the installation groove 14, and the purpose of using the upper surface of the leading-in end 702 to push the internal spline 9 can also be achieved.

As mentioned above, the headstock connecting piece is used for ensuring power rotation in the connecting rack, and meanwhile, an accurate positioning effect is required to be achieved, so the headstock connecting piece is arranged to have a structure in which the hollow center connecting piece 10 and the connector 11 are connected, wherein the hollow center connecting piece 10 is hollow inside and is used for penetrating the telescopic driving shaft 3, the connector 11 is sintered at one end of the hollow center connecting piece 10 close to the tailstock 2, the connector 11 is clamped and positions the workpiece 4, the hollow center connecting piece 10 is made of a steel material, and the connector 11 is made of a hard gold-plated material, so that the purposes of prolonging the service life and improving the connection strength can be achieved;

preferably, the tailstock center 5 adopts a pointed structure, and the tailstock center 5 is made of hard gold-plated materials.

As shown in fig. 1 and 2, hollow centre connecting piece 10, be provided with dust ring 12 between connector 11 and the flexible drive axle 3, the purpose is in order to prevent in the production process, the rivers or the oil that wash get into, avoid the thing of damage and life reduction to take place, it is corresponding, one side that is close to connector 11 at hollow centre connecting piece 10 is provided with the annular groove, the annular groove correspondence is inserted in the tip of establishing at connector 11, and dust ring 12 sets up in the inboard space 13 of dodging of connector 11, this kind of design provides the mounted position for dust ring 12 on the one hand, on the other hand, the relation of connection between the mechanical part has also been improved, it can effectively guarantee joint strength.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention shall be covered by the claims of the present invention.

Claims

1. The utility model provides a device of once only clamping grinding high accuracy multistage excircle work piece which characterized in that includes:

the bicycle frame comprises a bicycle frame body, wherein a bicycle head frame (1) and a bicycle tail frame (2) which are positioned on the same horizontal line are respectively arranged on the left side and the right side in the bicycle frame body;

one end of the telescopic driving shaft (3) is installed with the headstock frame (1) through a headstock connecting piece, and the other end of the telescopic driving shaft (3) is inserted into the workpiece (4) through a connecting and fixing unit to drive the workpiece (4) to rotate;

one end of the tailstock center (5) is installed on the tailstock (2), and the other end of the tailstock center (5) is inserted into one end, far away from the headstock (1), of the workpiece (4) to be supported and positioned;

a connection fixing unit including:

the V-shaped spring (6) is installed in the telescopic driving shaft (3), and one end of the V-shaped spring (6) is positioned on the telescopic driving shaft (3);

the turnover driving block (7) is sleeved on the V-shaped spring (6) and fixed through a pin shaft (8), and the top of the turnover driving block (7) is clamped on an internal spline (9) inside the workpiece (4) through a support of the V-shaped spring (6).

2. The device for clamping and grinding high-precision multi-stage cylindrical workpieces at one time according to claim 1, wherein the headstock connecting piece comprises:

the hollow center connecting piece (10), the hollow center connecting piece (10) is hollow inside and is used for penetrating the telescopic driving shaft (3);

the hollow center connecting piece (10) is close to one end of the tailstock (2) and is sintered with the connector (11), and the connector (11) is clamped into the workpiece (4) and positioned.

3. The device for clamping and grinding the high-precision multi-stage cylindrical workpiece at one time according to claim 2, wherein a dustproof ring (12) is arranged among the hollow center connecting piece (10), the connecting head (11) and the telescopic driving shaft (3).

4. The device for clamping and grinding the high-precision multi-stage cylindrical workpiece at one time according to claim 3, wherein one side, close to the connector (11), of the hollow center connecting piece (10) is provided with an annular groove, the annular groove is correspondingly inserted into the end part of the connector (11), and the dust ring (12) is arranged in an avoiding space (13) on the inner side of the connector (11).

5. The device for clamping and grinding high-precision multi-stage cylindrical workpieces at one time according to claim 4, wherein the tilting driving block (7) comprises:

the connecting end (701), the inside of the connecting end (701) is preset with a mounting hole connected with the V-shaped spring (6);

the lead-in end (702), the lead-in end (702) is integrally arranged at the top of the connecting end (701) and is provided with a chamfer;

a support end (703), a section of the support end (703) near the headstock (1) towards the lead-in end (702) extending to form an obtuse support structure with the lead-in end (702).

6. The device for clamping and grinding the high-precision multi-stage excircle workpiece in one time according to claim 5, characterized in that a transition end (704) is further arranged between the leading end (702) and the supporting end (703), and the upper surfaces of the leading end (702), the transition end (704) and the supporting end (703) form an obtuse angle structure between every two three sections.

7. The device for clamping and grinding the high-precision multi-stage cylindrical workpiece at one time according to claim 6, wherein the telescopic driving shaft (3) is provided with a mounting groove (14) corresponding to the V-shaped spring (6), and the depth of the mounting groove (14) is less than the height of the V-shaped spring (6) in a compressed state.