CN211708762U

CN211708762U - Automatic frock for clamping of lathe

Info

Publication number: CN211708762U
Application number: CN202020257483.4U
Authority: CN
Inventors: 肖源
Original assignee: Foshan Ruishi Precision Machinery Co ltd
Current assignee: Foshan Ruishi Precision Machinery Co ltd
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2020-10-20
Anticipated expiration: 2030-03-05

Abstract

The utility model discloses an automatic frock for clamping of lathe, including the coupling sleeve that is used for connecting the main shaft, the end cover through connecting piece and coupling sleeve connection, install two spring pins on the end cover along the radial symmetry of end cover, be equipped with fixed top in the shaft hole of main shaft, the axle center department of end cover has been seted up and has been dodged the hole, when fixed top passes the locating hole butt of dodging hole and work piece tip, spring pin withdrawal and with the work piece terminal surface butt, when the main shaft rotates and the spring pin is rotatory to just when the position of connection to the work piece terminal surface around the axle center of end cover, the spring pin resets and inserts the hookup location of work piece terminal surface and is rotatory in order to drive the work piece. The utility model discloses an automatic frock for clamping of lathe can interfere the work piece and drive the work piece rotation by the spring pin when the work piece adds man-hour, prevents to take place the phenomenon that the friction skidded between the locating hole of fixed top and work piece terminal surface.

Description

Automatic frock for clamping of lathe

Technical Field

The utility model relates to a parts machining technology field, concretely relates to frock is used to automatic clamping of lathe.

Background

When a lathe processes shaft parts with higher precision requirements on parts, a double-center clamping mode is needed, namely, the main shaft and the tail seat end are positioned and clamped by using centers, and if a conventional chuck jaw is used for clamping a workpiece, the mode is easy to cause over-positioning to final processing precision deviation. At the moment, the rotating motion of the part needs to be driven by the friction force between the fixed tip at the end of the spindle and the conical surface of the inner taper hole of the part, and when the friction force is insufficient due to small size and specification of the part, the slipping phenomenon is easy to occur, so that the abrasion of the inner taper hole of the part is aggravated, and the final machining precision is influenced.

In the existing method, a tool is generally added in the radial direction of a part to be connected with a main shaft part or generate interference, so that the tool drives the part to rotate, and the abrasion of an inner taper hole of the workpiece is avoided. However, in the method, because the workpiece is interfered with the main shaft part, the workpiece is generally manually installed one by one during machining, and the method is specially used for parts with single specification and has a small application range.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic frock for clamping of lathe can interfere the work piece and drive the work piece rotation by the spring pin during processing work piece, prevents to take place the phenomenon that the friction skidded between the locating hole of fixed top and work piece terminal surface.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides an automatic frock for clamping of lathe, including the connecting axle sleeve that is used for connecting the main shaft, through the connecting piece with the end cover that the connecting axle sleeve is connected, follow the radial symmetry of end cover install in two spring pins on the end cover, be equipped with fixed top in the shaft hole of main shaft, the axle center department of end cover has seted up dodges the hole, works as fixed top passes when dodging the locating hole butt of hole and work piece tip, spring pin withdrawal and with work piece terminal surface butt, works as the main shaft rotates just spring pin winds the axle center of end cover is rotatory to just right when the position of connection of work piece terminal surface, spring pin resets and inserts the position of connection of work piece terminal surface is in order to drive the work piece is rotatory.

As a preferred scheme of the tool for automatic clamping of the lathe, a plurality of groups of mounting positions are arranged on the end cover at intervals, each group of mounting positions comprises two mounting holes which are symmetrical along the radial direction of the end cover, the axle center distances of the two mounting holes of each group of mounting positions are different, and the spring pin is detachably mounted in one group of the mounting positions.

As a preferable scheme of the tool for automatic clamping of the lathe, the spring pin is screwed with the mounting hole and locked by a hexagon nut.

As a preferable scheme of the tool for automatic clamping of the lathe, the connecting piece comprises an adjusting shaft sleeve, and the outer wall of the adjusting shaft sleeve is in threaded connection with the connecting shaft sleeve.

As an optimal scheme of the tool for automatic assembly and clamping of the lathe, the connecting piece further comprises a positioning pin, a plurality of locking grooves are formed in the periphery of the adjusting shaft sleeve at intervals, the length of each locking groove extends along the axial direction of the adjusting shaft sleeve, a locking hole is formed in the connecting shaft sleeve, and the positioning pin and the locking hole can be screwed to be inserted into the locking grooves.

As a preferable scheme of the tool for automatic clamping of the lathe, the end cover is connected with the adjusting shaft sleeve through a screw.

As a preferable scheme of the tool for automatic clamping of the lathe, the connecting shaft sleeve is connected with the main shaft through screws, and three mounting openings adjacent to the main shaft are formed in the connecting shaft sleeve at intervals along the circumferential direction of the connecting shaft sleeve.

The utility model has the advantages that: under two fixed top centre gripping circumstances, the utility model discloses a spring pin atress withdrawal when using manipulator automatic feeding, by fixed top location work piece, the location is accomplished the back and is added the main shaft rotation man-hour, and automatic re-setting pops out when the spring pin removes the hookup location of work piece terminal surface, and the spring pin plays the interference work piece and drives the effect that the work piece is rotatory this moment, reaches the purpose of avoiding taking place the friction of skidding between top and the work piece locating hole.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural view of a tool for automatic clamping of a lathe according to an embodiment of the present invention.

Fig. 2 is a side view of the tool for automatic clamping of a lathe according to an embodiment of the present invention.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

In the figure:

1. a main shaft; 2. connecting the shaft sleeve; 21. an installation port; 22. a locking hole; 3. an end cap; 31. avoiding holes; 32. mounting holes; 4. a spring pin; 5. fixing the centre; 6. a hexagonal nut; 7. adjusting the shaft sleeve; 71. a locking groove; 8. and positioning the pin.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 3, the tool for automatic clamping of a lathe of this embodiment includes a connecting shaft sleeve 2 for connecting a main shaft 1, an end cover 3 connected to the connecting shaft sleeve 2 through a connecting piece, and two spring pins 4 symmetrically installed on the end cover 3 along a radial direction of the end cover 3, a fixed center 5 is provided in a shaft hole of the main shaft 1, an avoiding hole 31 is provided at an axis of the end cover 3, when the fixed center 5 passes through the avoiding hole 31 and abuts against a positioning hole at an end of a workpiece, the spring pins 4 retract and abut against an end face of the workpiece, and when the main shaft 1 rotates and the spring pins 4 rotate around the axis of the end cover 3 to a connecting position facing the end face of the workpiece, the spring pins 4 are reset and inserted into the connecting position at the end face of the workpiece to drive the workpiece to rotate.

The connecting position refers to a hole position or a gap on the end face of the workpiece, or an auxiliary tool with the hole position or the gap and arranged at the end of the workpiece, and the spring pin 4 can be smoothly inserted into the connecting position when rotating to interfere with the workpiece and drive the workpiece to rotate; the positioning hole on the end face of the workpiece is generally an inner tapered hole and has the same structure as the tapered tip of the fixed tip 5.

In this embodiment, the spring pin 4 is a conventional spring pin, and its model is MT333, and the detailed structure is not described again.

In the embodiment, when the manipulator conveys a workpiece to the main shaft 1 to extrude the spring pin 4 on the end cover 3 until the fixed center 5 is in butt joint with the positioning hole at the end part of the workpiece, the spring pin 4 is pressed by the workpiece, and the workpiece is positioned by the fixed center 5; after the positioning is finished, the workpiece is processed, the main shaft 1 rotates, the spring pin 4 rotates to be inserted into a connecting hole or a gap which is formed in the end face of the workpiece in advance, the spring pin 4 resets at the moment, the effect of interfering the workpiece and driving the workpiece to rotate is achieved, and therefore the purpose of preventing the fixed center 5 from slipping and rubbing with a positioning hole in the workpiece is achieved.

Further, a plurality of groups of installation positions are arranged on the end cover 3 at intervals, each group of installation positions comprises two installation holes 32 which are symmetrical along the radial direction of the end cover 3, the axle center distances of the two installation holes 32 of each group of installation positions are different, and the spring pins 4 are detachably installed in one group of the installation positions. The positioning and clamping device can adapt to positioning and clamping of workpieces with different sizes by arranging the mounting positions with different axle center distances.

The spring pin 4 is screwed with the mounting hole 32 and locked by the hexagonal nut 6, so that the spring pin 4 can be mounted conveniently, and the mounting position of the spring pin 4 can be adjusted rapidly according to workpieces with different sizes.

The connecting piece comprises an adjusting shaft sleeve 7, and the outer wall of the adjusting shaft sleeve 7 is screwed with the connecting shaft sleeve 2 in a threaded manner. The axial position of the spring pin 4 can be adjusted by screwing the adjusting shaft sleeve 7, so that the fixed center 5 can be stably positioned and abutted with the positioning hole in the workpiece after extending out of the end cover 3 according to workpieces with different sizes, and the spring pin 4 can be ensured to reset and be smoothly inserted into the connecting position of the end face of the workpiece so as to interfere the workpiece and drive the workpiece to rotate.

As a preferred embodiment, the connecting piece still includes dowel 8, the periphery interval of adjusting the axle sleeve 7 all is equipped with a plurality of locking grooves 71, the length of locking groove 71 is followed the axial extension of adjusting the axle sleeve 7, connection axle sleeve 2 is last to have seted up locking hole 22, dowel 8 can with locking hole 22 screw-thread connects to inserting in locking groove 71. After the installation position is adjusted through the rotation of the adjusting shaft sleeve 7, the adjusting shaft sleeve 7 and the connecting shaft sleeve 2 are further locked through the positioning pin 8, and the relative rotation is prevented from occurring between the adjusting shaft sleeve 7 and the connecting shaft sleeve.

Wherein, the number of the locking grooves 71 can be two, three, four or even more. The number of the locking holes 22 can be one, two, three or even more, particularly based on the size of the actual workpiece.

The end cover 3 is connected with the adjusting shaft sleeve 7 through a screw.

According to the size of the workpiece, after the position is adjusted and fixed through the adjusting shaft sleeve 7 and the positioning pin 8, the main shaft 1 is driven to rotate, and other tools are adopted to process the workpiece.

The connecting shaft sleeve 2 is connected with the main shaft 1 through a screw, the connecting shaft sleeve 2 is provided with three mounting holes 21 adjacent to the main shaft 1 at intervals along the circumferential direction of the connecting shaft sleeve 2, and the main shaft 1 and the connecting shaft sleeve 2 are convenient to connect through the mounting holes 21.

It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. The utility model provides a frock for automatic clamping of lathe, its characterized in that, including the connecting axle sleeve that is used for connecting the main shaft, through the connecting piece with the end cover that the connecting axle sleeve is connected, follow the radial symmetry of end cover install in two spring pins on the end cover, be equipped with fixed top in the shaft hole of main shaft, the axle center department of end cover has seted up dodges the hole, works as fixed top passes when dodging the locating hole butt of hole and work piece tip, spring pin withdrawal and with work piece terminal surface butt, works as the main shaft rotates just spring pin winds the axle center of end cover is rotatory to just right when the position of connection of work piece terminal surface, spring pin resets and inserts the position of connection of work piece terminal surface is in order to drive the work piece is rotatory.

2. The tool for the automatic assembly and clamping of the lathe according to claim 1, wherein a plurality of groups of mounting positions are arranged on the end cover at intervals, each group of mounting positions comprises two mounting holes which are symmetrical along the radial direction of the end cover, the axle center distances of the two mounting holes of each group of mounting positions are different, and the spring pins are detachably mounted in one group of the mounting positions.

3. The tool for automatic clamping by a lathe according to claim 2, wherein the spring pin is screwed with the mounting hole and locked by a hexagon nut.

4. The tool for automatic assembly and clamping of a lathe according to claim 1, wherein the connecting piece comprises an adjusting shaft sleeve, and the outer wall of the adjusting shaft sleeve is screwed with the connecting shaft sleeve.

5. The automatic frock for clamping of lathe of claim 4, wherein the connecting piece further comprises a positioning pin, a plurality of locking grooves are arranged at intervals on the periphery of the adjusting shaft sleeve, the length of each locking groove extends along the axial direction of the adjusting shaft sleeve, a locking hole is arranged on the connecting shaft sleeve, and the positioning pin and the locking hole can be screwed into the locking groove.

6. The tool for automatic assembly and clamping of a lathe according to claim 4, wherein the end cover is connected with the adjusting shaft sleeve through a screw.

7. The tool for automatic chucking on a lathe according to claim 1, wherein said connecting bosses are connected to said main shaft by screws, and said connecting bosses are provided with three mounting openings adjacent to said main shaft at intervals along a circumferential direction thereof.