CN213469874U

CN213469874U - Ball nut grinding constant centering clamp

Info

Publication number: CN213469874U
Application number: CN202022581451.2U
Authority: CN
Inventors: 杜晓红; 朱勇吉; 刘仓虎
Original assignee: Qishan North Machine Co ltd
Current assignee: Qishan North Machine Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-06-18
Anticipated expiration: 2030-11-10

Abstract

The utility model discloses a ball nut grinding constant center anchor clamps, including positioning seat, linking arm and locating rack, the one end and the positioning seat of linking arm are connected, and the other end and the locating rack of linking arm are connected, set up the constant head tank of placing ball nut on the locating rack, and the locating hole has radially been seted up to the bottom of constant head tank, installs the locating pin in the locating hole, and the locating pin passes the locating rack, installs adjusting nut on the locating pin that passes the locating rack, install on the linking arm with ball nut's axial lead vertically adjusting screw, still install the clamping device who presss from both sides tight ball nut on the locating rack. The utility model has the advantages that: after locating pin and adjusting screw have adjusted, the ball nut of placing in the locating slot at every turn all has a straightness, realizes the constant centering of ball nut in anchor clamps to through the ball nut of this anchor clamps centre gripping, need not to carry out the alignment again, just can carry out the finish machining to the spiral groove, thereby improved machining efficiency, also guaranteed ball nut's machining precision simultaneously.

Description

Ball nut grinding constant centering clamp

Technical Field

The utility model relates to a ball nut processing technology field, especially ball nut grinding invariable center anchor clamps.

Background

The ball screw nut pair is an ideal transmission device for interconversion of rotary motion and linear motion, and is characterized by that between screw nuts with spiral grooves the balls are mounted so as to reduce friction, and specifically, on the screw and nut the arc-shaped spiral grooves are made, and when they are cover-mounted together they can be formed into spiral rolling channel, and the rolling channel is filled with balls, and when the screw is rotated relatively to the nut, the axial displacement can be produced between them, and the balls can be rolled along the rolling channel so as to reduce friction resistance, and after the balls are rolled on the screw several turns, they can be rolled back between screw and nut one by means of return guide device so as to form a closed loop pipeline.

Add man-hour in high accuracy ball nut batch, ball nut after the rough machining needs to grind its helicla flute to realize the high accuracy processing of helicla flute, current ball nut's helicla flute need be when the grinding, alignment to each ball nut, thereby make machining efficiency reduce, be unfavorable for ball nut's finish machining, but also the error appears easily, influences ball nut's machining precision.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a convenient to use's invariable heart anchor clamps of ball nut grinding.

The purpose of the utility model is realized through the following technical scheme: ball nut grinding constant center anchor clamps, including positioning seat, linking arm and locating rack, the one end and the positioning seat of linking arm are connected, the other end and the locating rack of linking arm are connected, set up the constant head tank of placing ball nut on the locating rack, the locating hole has radially been seted up to the bottom of constant head tank, install the locating pin in the locating hole, and the locating pin passes the locating rack, install adjusting nut on the locating pin that passes the locating rack, install the axial lead vertically adjusting screw with ball nut on the linking arm, still install the clamping device who presss from both sides tight ball nut on the locating rack.

Preferably, clamping device includes the reference column, the hinge screw rod, clamp plate and unsteady pressure head, install the reference column on the locating rack, the reference column is located one side of constant head tank, still articulated on the locating rack installs the hinge screw rod, the hinge screw rod is located the opposite side of constant head tank, the top of reference column articulates there is the clamp plate, the draw-in groove has been seted up to the one side of keeping away from the reference column on the clamp plate, the top card of hinge screw rod is in the draw-in groove, and install lock nut on the hinge screw rod of outstanding draw-in groove, install unsteady pressure head on.

Preferably, the bottom of reference column and locating rack pass through the screw thread and can dismantle the connection, and install the gasket in the bottom of reference column.

Preferably, the number of the adjusting screws is two, and the adjusting screws are arranged at intervals.

Preferably, the mounting groove has been seted up on the clamp plate, is provided with the connecting block on the pressure head that floats, and the connecting block passes through the location axle to be installed in the mounting groove.

Preferably, the end face, close to the positioning frame, of the positioning seat is provided with a blind hole, and the diameter of the blind hole is larger than that of the ball nut.

Preferably, the screw end of the adjusting screw is a ball head.

Preferably, the positioning frame is provided with a groove, and the bottom of the hinge screw rod is arranged in the groove through a hinge shaft.

Preferably, the top of reference column is the goat's horn fork, and the clamp plate passes through the articulated shaft to be installed in the goat's horn fork.

The utility model has the advantages of it is following: the ball nut grinding constant center clamp has the advantages that after the positioning pin and the adjusting screw are adjusted, the ball nut placed in the positioning groove at each time has straightness, so that the constant center of the ball nut in the clamp is realized, the ball nut clamped by the clamp can be accurately machined without alignment, the machining efficiency is improved, and the machining precision of the ball nut is guaranteed; and when the ball nut is disassembled and assembled, the ball nut can be disassembled and assembled only by locking or opening the clamping device, so that the clamp is convenient to use, and the time for clamping the ball nut is reduced.

Drawings

FIG. 1 is a schematic structural diagram of the present invention

FIG. 2 is a schematic structural diagram of the present invention

FIG. 3 is a schematic structural diagram of the present invention

FIG. 4 is a schematic cross-sectional view of FIG. 3

In the figure, 1-positioning seat, 2-positioning pin, 3-adjusting screw, 4-positioning frame, 5-adjusting nut, 6-hinge screw, 7-floating pressure head, 8-pressing plate, 9-positioning column, 10-positioning shaft, 11-gasket, 12-blind hole, 13-connecting block, 14-mounting groove, 15-positioning groove, 16-connecting arm, 17-locking nut, 18-clamping groove and 19-groove.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. 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. 1-4, the ball nut grinding constant centering fixture comprises a positioning seat 1, a connecting arm 16 and a positioning frame 4, wherein one end of the connecting arm 16 is connected with the positioning seat 1, the other end of the connecting arm 16 is connected with the positioning frame 4, further, a groove 19 is formed between the positioning seat 1 and the positioning frame 4, the upper surface of the connecting arm 16 is a plane, after the ball nut is placed on the positioning frame 4, the outer edge of the ball nut can be seen through the groove 19, and preferably, the positioning seat 1, the connecting arm 16 and the positioning frame 4 are of an integrally formed structure.

In this embodiment, as shown in fig. 3 and 4, a positioning groove 15 for placing the ball nut is provided on the positioning frame 4, a positioning hole is radially provided at the bottom of the positioning groove 15, a positioning pin 2 is installed in the positioning hole, the positioning pin 2 passes through the positioning frame 4, an adjusting nut 5 is installed on the positioning pin 2 passing through the positioning frame 4, the ball nut is placed in the positioning groove 15, the positioning pin 2 is aligned with a reference hole on the ball nut, the position of the positioning pin 2 is determined, and then the position of the positioning pin 2 is fixed through the adjusting nut 5, so that when the ball nut is installed later, the position of the ball nut in the positioning groove 15 can be located only by using the reference hole of the ball nut and the positioning pin 2.

In the present embodiment, as shown in fig. 1 to 4, two adjusting screws 3 are preferably installed on the connecting arm 16, and the adjusting screws 3 are perpendicular to the axial line of the ball nut, and are spaced apart from each other, and the screw end of the adjusting screw 3 is a ball head, and the relative position between the adjusting screw 3 and the ball nut is changed by rotating the adjusting screw 3, whereas in the present embodiment, the ball head of the adjusting screw 3 is in contact with the outer edge of the ball nut, and when the adjusting nut 5 is rotated, the levelness of the ball nut is changed, and in the actual operation process, the ball nut needs to be in a horizontal state through the adjusting screw 3, and after the positions of the adjusting screw 3 and the positioning pin 2 are fixed, the position of the ball nut placed at each time is fixed, so as to ensure the processing consistency of the ball nut.

In this embodiment, as shown in fig. 1 to 4, a clamping device for clamping a ball nut is further installed on the positioning frame 4, the clamping device includes a positioning column 9, a hinge screw 6, a pressing plate 8 and a floating pressing head 7, the positioning column 9 is installed on the positioning frame 4, the positioning column 9 is located on one side of the positioning slot 15, the positioning frame 4 is further installed with the hinge screw 6 in a hinged manner, the hinge screw 6 is located on the other side of the positioning slot 15, the pressing plate 8 is hinged to the top of the positioning column 9, a clamping slot 18 is opened on one side of the pressing plate 8 away from the positioning column 9, the top of the hinge screw 6 is clamped in the clamping slot 18, a locking nut 17 is installed on the hinge screw 6 protruding out of the clamping slot 18, the floating pressing head 7 is installed on the pressing plate 8, the floating pressing head 7 is located above the positioning slot 15, when in use, make unsteady pressure head 7 and ball nut contact, place hinge screw 6 in draw-in groove 18 again, then lock nut 17 to make unsteady pressure head 7 hug closely ball nut, thereby make ball nut fixed, the processing of being convenient for.

In this embodiment, as shown in fig. 1, the bottom of the positioning column 9 is detachably connected to the positioning frame 4 through a thread, and a gasket 11 is installed at the bottom of the positioning column 9, further, a screw hole is formed in the positioning frame 4, the bottom of the positioning column 9 is a screw rod, the screw rod is connected to the screw hole through a thread, the gasket 11 is sleeved on the screw rod, the height of the positioning column 9 can be changed through the gasket 11, so that the position of the floating pressure head 7 is changed, that is, the position of the floating pressure head 7 can be adjusted through the gasket 11, and the floating pressure head 7 can press the ball nut.

In this embodiment, as shown in fig. 2, a mounting groove 14 has been opened on the pressure plate 8, a connecting block 13 is provided on the floating pressure head 7, the connecting block 13 is installed in the mounting groove 14 through the positioning shaft 10, through holes through which the positioning shaft 10 passes are all opened on the groove walls of the connecting block 13 and the mounting groove 14, the positioning shaft 10 is inserted into the through holes, and pin holes are opened at both ends of the positioning shaft 10, and then a pin is installed in the pin holes, thereby fixing the positioning shaft 10.

In this embodiment, as shown in fig. 4, a blind hole 12 is formed on an end surface of the positioning seat 1 close to the positioning frame 4, a diameter of the blind hole 12 is larger than a diameter of the ball nut, and when the ball nut is longer in length, a part of the ball nut is located in the blind hole 12.

In this embodiment, as shown in fig. 3, a groove 19 is formed in the positioning frame 4, the bottom of the hinge screw 6 is installed in the groove 19 through a hinge shaft, further, the groove 19 is formed from the outer side wall of the positioning frame 4 toward the positioning groove 15, a through hole through which the hinge shaft passes is formed in the bottom of the hinge screw 6, and a through hole through which the hinge shaft passes is also formed in the groove wall of the groove 19, the installation is that the bottom of the hinge screw 6 is placed in the groove 19, the hinge shaft penetrates into the through hole, and pins are installed at two ends of the hinge shaft, so that the hinge shaft is prevented from exiting the through hole.

In this embodiment, the top of reference column 9 is the goat's horn fork, and clamp plate 8 passes through the articulated shaft to be installed in the goat's horn fork, and is the same, has seted up the through-hole on the clamp plate 8, and has also seted up the through-hole on the goat's horn fork, places clamp plate 8 in the goat's horn fork, then penetrates the articulated shaft in the through-hole to at the both ends erection pin of articulated shaft, thereby avoid the articulated shaft to withdraw from this through-hole.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. Ball nut grinding constant center anchor clamps, its characterized in that: including positioning seat, linking arm and locating rack, the one end of linking arm with the positioning seat is connected, the other end of linking arm with the locating rack is connected, set up the constant head tank of placing ball nut on the locating rack, the locating hole has radially been seted up to the bottom of constant head tank, install the locating pin in the locating hole, just the locating pin passes the locating rack passes install adjusting nut on the locating pin of locating rack, install on the linking arm with ball nut's axial lead vertically adjusting screw, it presss from both sides tightly still to install on the locating rack ball nut's clamping device.

2. The ball nut grinding constant center jig according to claim 1, characterized in that: clamping device includes the reference column, hinge screw rod, clamp plate and unsteady pressure head, install on the locating rack the reference column, the reference column is located one side of constant head tank, it installs still to articulate on the locating rack the hinge screw rod, the hinge screw rod is located the opposite side of constant head tank, the top of reference column articulates there is the clamp plate, keep away from on the clamp plate the draw-in groove has been seted up to one side of reference column, the top card of hinge screw rod is in the draw-in groove, and outstanding install lock nut on the hinge screw rod of draw-in groove, install unsteady pressure head on the clamp plate, unsteady pressure head is located the constant head tank top.

3. The ball nut grinding constant center jig according to claim 2, characterized in that: the bottom of reference column with the locating rack passes through the screw thread and can dismantle the connection, just is in the gasket is installed to the bottom of reference column.

4. The ball nut grinding constant center jig according to claim 1, characterized in that: the adjusting screws are two and are arranged at intervals.

5. The ball nut grinding constant center jig according to claim 2, characterized in that: the pressure plate is provided with a mounting groove, the floating pressure head is provided with a connecting block, and the connecting block is mounted in the mounting groove through a positioning shaft.

6. The ball nut grinding constant center jig according to claim 1, characterized in that: and a blind hole is formed in the end face, close to the positioning frame, of the positioning seat, and the diameter of the blind hole is larger than that of the ball nut.

7. The ball nut grinding constant center jig according to claim 1 or 4, characterized in that: the screw end part of the adjusting screw is a ball head.

8. The ball nut grinding constant center jig according to claim 2 or 3, characterized in that: the positioning frame is provided with a groove, and the bottom of the hinge screw rod is arranged in the groove through a hinged shaft.

9. The ball nut grinding constant center jig according to claim 2 or 3, characterized in that: the top of the positioning column is a goat's horn fork, and the pressing plate is installed in the goat's horn fork through a hinged shaft.