CN201500948U

CN201500948U - Fixture

Info

Publication number: CN201500948U
Application number: CN2009201104623U
Authority: CN
Inventors: 谢国强; 谷苍; 刘敬波
Original assignee: BEIJING CHANGHANG PRECISON CASTING Co Ltd
Current assignee: BEIJING CHANGHANG PRECISON CASTING Co Ltd
Priority date: 2009-07-28
Filing date: 2009-07-28
Publication date: 2010-06-09
Anticipated expiration: 2019-07-28

Abstract

The utility model provides a fixture, which aims at a workpiece with a to-be-tapped surface and a bottom surface which are parallel, and utilizes the to-be-tapped surface and the bottom surface as references to hold the workpiece so as to guarantee precision of tapping positions. A positioning block (4) with a positioning hole (4a), an adjusting rod (6) and a movement changing mechanism operated by the adjusting rod (6) are arranged on a bottom frame of the fixture, wherein the movement changing mechanism comprises a supporting block (9) which is arranged below the positioning block (4) and distant from the same.

Description

Anchor clamps

Technical field

The utility model relates to a kind of anchor clamps that are used for clamping work pieces, particularly, relates to and a kind ofly is used for tapping and adds the anchor clamps that clamp workpiece to be machined man-hour.

Background technology

Generally speaking, add man-hour in that the blind hole of workpiece or through hole are carried out tapping, directly with clamping workpiece on bench vice, then, manual directly tapping., for such hand tapping, or can be in the tapping starting stage, because exert oneself on hand inhomogeneously to cause just beginning several roads and just attack askewly, this can cause the axis of thread of tapping subsequently to depart from benchmark; Can be in tapping mid-term, inhomogeneously cause damaging and distortion because exert oneself on the right-hand man.

Particularly at the workpiece to be processed of trapezoidal shape shape, if carry out tapping at its end face or place, bottom surface, because its side is not a parallel surface, thereby clamping gets up just pretty troublesome.Though also can consider behind voussoir on the place pad of side, again with its clamping on vice, do like this, be difficult to the precision of assurance clamping and tapping.

The utility model content

In view of this, it is a kind of at the tapping face of the treating workpiece parallel with the bottom surface that the utility model provides, and is that benchmark carries out clamping to treat tapping face and bottom surface, guarantees the anchor clamps of tapping positional precision.

To achieve these goals, this use is novel to provide following a kind of anchor clamps, underframe is provided with locating piece, the adjusting lever of band locating hole and the motion changing mechanism that can be adjusted the bar operation, and this motion changing mechanism comprises the rest pad that is positioned at the locating piece below and is provided with at interval with this locating piece.

According to these anchor clamps, for the tapping face of the treating workpiece to be processed parallel with the bottom surface, can earlier workpiece to be processed be placed on alternate being arranged between locating hole and the rest pad, then, by adjusting adjusting lever, by motion changing mechanism moving axially of adjusting lever is transformed between rest pad and the locating piece and relatively moves, to treat that tapping face and bottom surface are this workpiece to be processed of benchmark clamping, and clamping workpiece to be processed, thereafter, by the locating hole on the locating piece, workpiece to be processed is carried out tapping processing, thereby guarantee the anchor clamps of tapping positional precision.

In addition, described motion changing mechanism also comprises the movable block that has first inclined-plane and can move under adjusting lever drives, described rest pad have the first side wall, second sidewall and be arranged on this first side wall and second sidewall between second inclined-plane.

Like this, can moving axially of adjusting lever be transformed to moving of rest pad by the inclined-plane between one group of rest pad and the movable block, simple on the structure, motion converter efficient is higher.

In addition, between described movable block and described adjusting lever, be provided with jackscrew.

By jackscrew is set, can reduce the friction between adjusting lever and the movable block, in addition,, also can only change jackscrew even if jackscrew has damaged, can reduce maintenance cost.

In addition, described underframe comprises: base plate, be arranged on first and second support plate on the base plate, described locating piece is arranged on described first support plate, and described adjusting lever is installed on described second support plate.

With such structure fabrication base, simple in structure, easy for installation.

In addition, directly connect by screw thread between described adjusting lever and described second support plate.

Directly connect by screw thread, do not need other parts are set separately, make on the structure more simple.

In addition, described locating hole is at least one, and the drill jig cover is installed in the described locating hole.

By the drill jig cover is set, can reduce damage to locating hole, prolong the service life of anchor clamps.

Description of drawings

Fig. 1 is the cutaway view of workpiece to be processed;

Fig. 2 is the left view of workpiece to be processed shown in Figure 1;

Fig. 3 is the vertical view of workpiece to be processed shown in Figure 1;

Fig. 4 is the front view of the utility model anchor clamps;

Fig. 5 is the vertical view of anchor clamps shown in Figure 4;

Fig. 6 is the schematic diagram of first support plate;

Fig. 7 is the partial sectional view of first support plate;

Fig. 8 is the schematic diagram of location-plate;

Fig. 9 is the cutaway view along B-B line among Fig. 5;

Figure 10 is the schematic diagram of second support plate;

Figure 11 is the partial sectional view of second support plate;

Figure 12 is the front view of adjusting lever;

Figure 13 is the right view of adjusting lever shown in Figure 12;

Figure 14 is the schematic diagram of movable block;

Figure 15 is the cutaway view of movable block;

Figure 16 is the schematic diagram of rest pad;

Figure 17 is the cutaway view of rest pad;

Figure 18 is the schematic diagram when accompanying workpiece to be processed on the utility model anchor clamps.

The specific embodiment

Fig. 1 to Fig. 3 shows a kind of part that needs tapping.Wherein, Fig. 2 is the left view of workpiece to be processed 30, and Fig. 1 is the cutaway view along A-A line among Fig. 2, and Fig. 3 is the vertical view of workpiece to be processed 30.As shown in Figure 1 to Figure 3, these workpiece to be processed 30 integral body are trapezoidal shape, treat that tapping face and bottom surface are parallel, have three through holes 32,32,33 on it, and two screwed holes to be processed 31,31 that are communicated with respectively with through hole 32,32.In general, for this workpiece to be processed 30,, screwed

hole

31,31 is processed into through hole, and then, through hole is processed into screwed

hole

31,31 by the tapping operation often at last procedure.

Fig. 4 and Fig. 5 show a kind of anchor clamps, and wherein, Fig. 4 is a front view, and Fig. 5 is a vertical view.The underframe of these anchor clamps comprises base plate 1, is arranged on first support plate 2 and second support plate 3 on the base plate 1.On the top of first rest pad 2, be provided with locating piece 4.Second rest pad 3 is provided with adjusting lever 6.Below locating piece 4, be arranged at intervals with rest pad 9 with it.Movable block 8 inserts rest pads 8, and with an end of adjusting lever 6 between link to each other by jackscrew.

Fig. 6 and Fig. 7 show the concrete structure of first support plate 2.This first support plate 2 can be fastened on the base plate 1 by welding or other forms.The top of this first support plate 2 is provided with two screwed hole 2a, is used for by second bolt 22 stationary positioned piece 4 on first support plate 2.

Fig. 8 and Fig. 9 show the concrete structure of locating piece 4, have locating piece fixing hole 4b and locating hole 4a on it.As mentioned above, by the locating piece fixing hole 4b and second bolt 22 this locating piece 4 is fixed on first support plate 2.In the present embodiment, considering needs to process 2 screwed holes on the workpiece to be processed 30, so the quantity of the locating hole 4a on locating piece 4 is two, and corresponding with the screwed hole 31 of workpiece to be processed 30 on the position.In addition, the quantity of locating hole 4a is not limited to this, can be according to the needs of workpiece to be processed, and appropriate change quantity and position.In addition, as shown in Figure 4, in the locating hole 4a of locating piece 4, drill jig cover 5 can be set.By this drill jig cover 5 is set, can reduce damage to locating hole 4a, prolong the service life of anchor clamps.

Figure 10 and Figure 11 show the concrete structure of second support plate 3.Have two support plate fixing hole 3b on this second support plate 3, can pass through this support plate fixing hole 3b and first bolt 21, this second support plate 3 is fixed on the base plate 1.In addition, has the guide thread hole 3a that cooperates with adjusting lever 6 on second fixed head 3.Can adjust the position of adjusting lever by the rotation of the adjusting lever 6 that is threaded with this guide thread hole 3 with respect to second fixed head 3, and then, the position of movable block 8 can be adjusted.

Figure 12 and Figure 13 show the concrete structure of adjusting lever 6.Wherein, Figure 12 is a front view, and Figure 13 is a right view.These adjusting lever 6 one ends are equipped with jackscrew 6c, have gathering sill 6d on this jackscrew 6c.The other end of adjusting lever 6 is provided with action bars 6a, can pass through this action bars 6a, and adjusting lever 6 is rotated.The part between jackscrew 6c and action bars 6d of adjusting lever 6 is screw thread 6b, this screw thread 6b be used for and guide thread hole 3a between cooperate, so that adjusting lever 6 is adjusted.

Figure 14 and Figure 15 show the concrete structure of movable block 8.Have the first inclined-plane 8a on this movable block 8, be used to promote rest pad 9.In addition, on movable block 8, also have jack 8c, and in the radial position of jack 8c, be provided with retaining thread hole 8b.Thus, can be in jackscrew 6c be inserted into jack 8c after, be screwed into retaining thread hole 8b by sunk screw 7, allow the top of sunk screw 7 engage with gathering sill 6d, limit relatively moving between jackscrew 6c and the movable block 8 thus.Simultaneously, control the stroke that is screwed into of sunk screw 7, make this sunk screw 7 can limit moving axially of jackscrew 6c, do not limit the rotation of jackscrew 6c in jack 8c again.

By such structure, adjusting lever 6 is rotated with respect to movable block 8, can promote or spur adjusting lever 8 again, and make it mobile.In addition, jackscrew 6 is set, can also reduces the wearing and tearing between adjusting lever 6 and the movable block 8.In addition,, also jackscrew 6 can be only changed, maintenance cost can be reduced even if jackscrew 6 has damaged.

Figure 16 and Figure 17 show the concrete structure of rest pad 9.This described rest pad 9 have the first side wall 9a, the second sidewall 9c and be arranged on this first side wall 9a and the second sidewall 9c between the second inclined-plane 9b.The second inclined-plane 9b can with the first inclined-plane 8a butt on the movable block 8.And in the time of in movable block 8 is filled in rest pad 9, rest pad 9 rides on the movable block 8 by its first side wall 9a and the second sidewall 9c.Thereby, when making movable block 8 by adjusting lever 6 to rest pad 9 one side shiftings, because the opposite side and first support plate, 2 butts of rest pad 9, limit the moving along movable block 8 moving directions of rest pad 9, make rest pad 9 moving horizontally of movable block 8 is converted to the moving vertically of self, like this, just can dwindle the distance between rest pad 9 and the locating piece 4, can clamp workpiece to be processed 30.When make movable block 8 reverse when mobile by adjusting lever 6, then the action of rest pad 9 is opposite, vertically moves down, and like this, just can take out the workpiece to be processed 30 that is clipped between rest pad 9 and the locating piece 4.

Thus, constitute motion changing mechanism by movable block 8, rest pad 9 and first support plate 2.But, for first support plate 2, also can adopt other forms of parts, for example movable block far away 8 one sides at rest pad 9 are provided with stop component, and also are fine with this alternative first support plate 2.

In addition,, also be not limited to the form on inclined-plane, also can adopt other forms, for example, can carry out motion converter by the relation of screw thread and screw rod about the motion converter means.In addition, when part is huge especially, also can adopts hydraulic pressure to wait and carry out motion change.

Figure 18 shows the situation of using this clamp workpiece to be processed 30.The situation of concrete clamping workpiece to be processed 30 as mentioned above.

According to these anchor clamps, for the tapping face of the treating workpiece to be processed 30 parallel with the bottom surface, can earlier workpiece to be processed 30 be placed on alternate being arranged between locating piece 4 and the rest pad 9, then, by adjusting adjusting lever, by motion changing mechanism moving axially of adjusting lever is transformed between rest pad and the locating piece and relatively moves, to treat that tapping face and bottom surface are this workpiece to be processed 30 of benchmark clamping, and clamping workpiece to be processed 30, thereafter, by the locating hole on the locating piece, workpiece to be processed 30 is carried out tapping processing, thereby guarantee the anchor clamps of tapping positional precision.

Claims

1. anchor clamps, it is characterized in that, the motion changing mechanism that underframe is provided with locating piece (4), the adjusting lever (6) of band locating hole (4a) and can be adjusted bar (6) operation, this motion changing mechanism comprise the rest pad (9) that is positioned at locating piece (4) below and is provided with at interval with this locating piece.

2. anchor clamps according to claim 1, it is characterized in that, described motion changing mechanism also comprises and has first inclined-plane (8a) and can drive mobile down movable block (8) at adjusting lever (6), described rest pad (9) have the first side wall (9a), second sidewall (9c) and be arranged on this first side wall (9a) and second sidewall (9c) between second inclined-plane (9b).

3. anchor clamps according to claim 2 is characterized in that, are provided with jackscrew (6c) between described movable block (8) and described adjusting lever (6).

4. according to any described anchor clamps of claim 1～3, it is characterized in that, described underframe comprises: base plate (1), be arranged on first and second support plate (2,3) on the base plate (1), described locating piece (4) is arranged on described first support plate (2), and described adjusting lever (6) is installed on described second support plate (3).

5. anchor clamps according to claim 4 is characterized in that, directly connect by screw thread between described adjusting lever (6) and described second support plate (3).

6. according to any described anchor clamps of claim 1～3, it is characterized in that described locating hole (4a) is at least one, drill jig cover (5) is installed in the described locating hole (4a).