CN113400059A

CN113400059A - Hydraulic clamp for numerical control machine tool

Info

Publication number: CN113400059A
Application number: CN202110686964.6A
Authority: CN
Inventors: 雷萌; 李录峰; 路明利; 沙江
Original assignee: Xi'an Kangcheng Machine Manufacture Co ltd
Current assignee: Xi'an Kangcheng Machine Manufacture Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-09-17
Anticipated expiration: 2041-06-21
Also published as: CN113400059B

Abstract

The invention belongs to the technical field of numerical control machines, and discloses a hydraulic clamp for a numerical control machine, which is technically characterized in that: the rotary column is internally provided with a control cavity, a transmission mechanism is arranged in the control cavity and comprises a hydraulic cylinder fixedly arranged on the inner wall of the control cavity, a telescopic rod of the hydraulic cylinder is fixedly connected with a transmission block positioned in the control cavity, a first clamping mechanism is arranged on the rotary column and comprises a fixed part and a transmission part, the transmission part is positioned in the control cavity and is matched with the transmission block, the transmission part is connected with the fixed part and is used for controlling the fixed part to fix a workpiece, the surface of the rotary column, facing the workpiece, is provided with a second clamping mechanism, the surface of the transmission block is rotatably connected with a push-pull rod connected with the second clamping mechanism, and the push-pull rod drives the second clamping mechanism to clamp and fix the workpiece.

Description

Hydraulic clamp for numerical control machine tool

Technical Field

The invention relates to the technical field of numerical control machines, in particular to a hydraulic clamp for a numerical control machine.

Background

With the updating of technology and production technology, the numerical control machine tool is gradually replacing a common machine tool, the machining precision of the numerical control machine tool is higher, the machining quality can be effectively improved, the automation degree of the numerical control machine tool is high, the labor intensity of workers can be reduced in production, and the numerical control machine tool is a typical mechanical and electrical integration product.

The machine tool clamp is a tool used for fixing a workpiece on a machine tool, the workpiece is fixed on a numerical control machine tool through the clamp, and then the workpiece is cut.

However, the existing machine tool clamp is single in fixing mode of a workpiece, when a cutter is used for processing the workpiece for a long time, the clamp cannot be effectively clamped, the workpiece is shaken to influence production precision, the existing clamp cannot be used for switching between rotary cutting and fixed cutting of the workpiece, and the using effect of equipment is limited.

Disclosure of Invention

The invention aims to provide a hydraulic clamp for a numerical control machine tool, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a hydraulic clamp for a numerical control machine tool comprises a rotary column, wherein the rotary column is connected with a driving mechanism of the numerical control machine tool, a control cavity is formed in the rotary column, a transmission mechanism is arranged in the control cavity, the transmission mechanism comprises a hydraulic cylinder fixedly arranged on the inner wall of the control cavity, and a telescopic rod of the hydraulic cylinder is fixedly connected with a transmission block positioned in the control cavity;

the rotating column is provided with a first clamping mechanism which comprises a fixing part and a transmission part,

the fixing part is positioned on the surface of the rotating column and used for primarily fixing the workpiece, the transmission part is positioned in the control cavity and matched with the transmission block, and the transmission part is connected with the fixing part and used for controlling the fixing part to fix the workpiece;

the surface of the rotating column facing the workpiece is provided with a second clamping mechanism, the surface of the transmission block is rotatably connected with a push-pull rod connected with the second clamping mechanism, and the push-pull rod drives the second clamping mechanism to clamp and fix the workpiece.

As a further scheme of the invention: the fixed part comprises a plurality of groups of sliding grooves formed in the surface of the rotating column, sliding blocks are arranged in the sliding grooves in a sliding mode, first elastic pieces connected with the sliding blocks are fixedly connected to the inner walls of the sliding grooves, first fixing plates extending out of the sliding grooves are fixedly connected to the surfaces of the sliding blocks, and the sliding blocks are connected with the transmission part.

As a further scheme of the invention: the transmission portion is including the logical groove that the control chamber lateral wall communicates with the spout to inside the seting up of column spinner, and the lateral wall fixed mounting that the control chamber is close to the fixed part has the multiunit gag lever post, and gag lever post surface sliding connection has the stripper plate of mutually supporting with the transmission piece, rotates between the control chamber lateral wall and installs the leading wheel, and slider lateral wall fixedly connected with passes logical groove and the leading wheel extends to the control chamber in with stripper plate fixed connection's control line.

As a further scheme of the invention: the second clamping mechanism comprises a rotating hole which is formed in the surface of the rotating column and communicated with the control cavity, a rotating rod is installed in the rotating hole in a rotating mode, an extrusion rod is fixedly connected onto the rotating rod, one end, located in the control cavity, of the extrusion rod is connected with the push-pull rod in a rotating mode, and one end, located outside the rotating column, of the extrusion rod is connected with a second fixing plate in a rotating mode.

As a further scheme of the invention: the rotating column circumferential surface rotates and installs the fixed plate, fixed plate and digit control machine tool actuating mechanism fixed connection, fixed plate surface mounting have with the spacing subassembly of rotating column mutually supporting, spacing subassembly is used for fixing the position of rotating column.

As a further scheme of the invention: spacing subassembly is the spacing hole that the annular distributes including the multiunit that the revolving column circumference lateral wall was seted up, and flexible groove has been seted up to the fixed plate lateral wall, and flexible inslot slidable mounting has the gag lever post of mutually supporting with spacing hole, and the gag lever post lateral wall is connected with the second elastic component with flexible groove fixed connection, and the joint groove has been seted up to the revolving column to the relative telescopic hole lateral wall of gag lever post, and joint inslot slidable connection has the joint piece, and the joint hole of mutually supporting with the joint piece is seted up on the gag lever post surface.

As a still further scheme of the invention: and anti-slip pads are arranged on the surfaces of the first fixing plate, the second fixing plate and the rotating column facing the workpiece.

Compared with the prior art, the invention has the beneficial effects that: through setting up by the spout, the slider, the fixed part that first fixed plate is constituteed and by leading to the groove, the leading wheel, the control line, the gag lever post, the transmission portion and the pneumatic cylinder and the transmission piece that the stripper plate is constituteed are mutually supported, can tentatively fix the work piece, through setting up by rotatory hole, the dwang, the stripper rod, the second clamping mechanism that the second fixed plate is constituteed can further press from both sides tight fixedly with pneumatic cylinder and transmission piece with mutually supporting to the work piece, effectively avoid adding man-hour work piece to the work piece and produce and rock, and through set up the spacing subassembly of mutually supporting with the column spinner on the fixed plate, the problem that current lathe anchor clamps can't lead to the anchor clamps effectively to press from both sides tightly and then lead to the work piece to produce to rock the influence production precision and current anchor clamps can't carry out rotary cutting and fixed cutting to the work piece and switch has been solved.

Drawings

Fig. 1 is a schematic structural diagram of a hydraulic clamp for a numerical control machine tool.

Fig. 2 is a schematic diagram of a right-view structure of a rotary column in a hydraulic clamp for a numerical control machine tool.

Fig. 3 is a schematic structural diagram of a limiting assembly in a hydraulic clamp for a numerical control machine tool.

Fig. 4 is an external structural view of a rotary column in a hydraulic clamp for a numerical control machine tool.

Wherein: the rotary column comprises a rotary column 1, a control cavity 2, a transmission mechanism 3, a hydraulic cylinder 31, a transmission block 32, a first clamping mechanism 4, a fixing part 5, a sliding groove 51, a sliding block 52, a first fixing plate 53, a first elastic piece 54, a transmission part 6, a through groove 61, a guide wheel 62, a control line 63, a limiting rod 64, a squeezing plate 65, a second clamping mechanism 7, a rotary hole 71, a rotating rod 72, a squeezing rod 73, a second fixing plate 74, a push-pull rod 8, a fixing plate 9, a limiting component 10, a limiting hole 101, a telescopic groove 102, a limiting rod 103, a second elastic piece 104, a clamping groove 105, a clamping block 106 and a clamping hole 107.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "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 by those of ordinary skill in the art through specific situations.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

As shown in fig. 1 and 2, a structure diagram of a hydraulic clamp for a numerical control machine tool provided by an embodiment of the present invention includes a rotary column 1, the rotary column 1 is connected to a driving mechanism of the numerical control machine tool, a control chamber 2 is formed inside the rotary column 1, and a transmission mechanism 3 is installed inside the control chamber 2, and is characterized in that the transmission mechanism 3 includes a hydraulic cylinder 31 fixedly installed on an inner wall of the control chamber 2, a telescopic rod of the hydraulic cylinder 31 is fixedly connected to a transmission block 32 located inside the control chamber 2, a first clamping mechanism 4 is installed on the rotary column 1, the first clamping mechanism 4 includes a fixing portion 5 and a transmission portion 6, the fixing portion 5 is located on a surface of the rotary column 1 to primarily fix a workpiece, the transmission portion 6 is located inside the control chamber 2 to be matched with the transmission block 32, the transmission portion 6 is connected to the fixing portion 5 to control the fixing portion 5 to fix the workpiece, the surface of the rotary column 1 facing the workpiece is provided with a second clamping mechanism 7, the surface of the transmission block 32 is rotatably connected with a push-pull rod 8 connected with the second clamping mechanism 7, and the push-pull rod 8 drives the second clamping mechanism 7 to clamp and fix the workpiece.

During the use, place the top surface of column spinner 1 with the work piece, start hydraulic cylinder 31 and drive the transmission piece 32 and remove in control chamber 2, the transmission piece 32 removes and drives the removal of transmission portion 6 and then control fixed part 5 and tentatively fix the work piece, and the transmission piece 32 drives push-and-pull rod 8 and removes and then drives second clamping mechanism 7 and further presss from both sides tightly the work piece simultaneously.

As shown in fig. 2, as a preferred embodiment of the present invention, the fixing portion 5 includes a plurality of sets of sliding grooves 51 formed on the surface of the rotating column 1, a sliding block 52 is slidably mounted in the sliding grooves 51, a first elastic element 54 connected to the sliding block 52 is fixedly connected to an inner wall of the sliding groove 51, a first fixing plate 53 extending out of the sliding groove 51 is fixedly connected to a surface of the sliding block 52, and the sliding block 52 is connected to the transmission portion 6.

When in use, the transmission part 6 drives the sliding block 52 to move in the sliding groove 51 so as to drive the plurality of groups of first fixing plates 53 to approach each other to clamp and fix the workpiece.

The first elastic member 54 may be a spring or an elastic washer.

As shown in fig. 2, as a preferred embodiment of the present invention, the transmission part 6 includes a through groove 61 formed on a side wall of the control cavity 2 toward the inside of the spin column 1 and communicated with the sliding groove 51, a plurality of sets of limit rods 64 are fixedly mounted on a side wall of the control cavity 2 close to the fixing part 5, a pressing plate 65 mutually matched with the transmission block 32 is slidably connected to a surface of the limit rod 64, a guide wheel 62 is rotatably mounted between side walls of the control cavity 2, and a control line 63 fixedly connected to the pressing plate 65 extends into the control cavity 2 through the through groove 61 and the guide wheel 62 and is connected to a side wall of the slider 52.

During the use, pneumatic cylinder 31 drives transmission block 32 and removes in control tank 2, and transmission block 32 drives stripper plate 65 and removes and then drive control line 63 and remove along the direction of gag lever post 64, and control line 63 passes leading wheel 62 and removes and then drive slider 52 and remove in spout 51, and multiunit slider 52 receives the elastic force effect of first elastic component 54 to be in spout 51 and keeps away from the one end of keeping away from the work piece, and control line 63 passes through slider 52 and then stimulates first fixed plate 53 and remove towards the work piece and carry out preliminary clamp to the work piece fixedly, control line 63 has sufficient intensity.

As shown in fig. 1 and 4, as a preferred embodiment of the present invention, the second clamping mechanism 7 includes a rotation hole 71 formed in the surface of the rotation column 1 and communicated with the control chamber 2, a rotation rod 72 is rotatably mounted in the rotation hole 71, an extrusion rod 73 is fixedly connected to the rotation rod 72, one end of the extrusion rod 73 located in the control chamber 2 is rotatably connected to the push-pull rod 8, and one end of the extrusion rod 73 located outside the rotation column 1 is rotatably connected to a second fixing plate 74.

When the device is used, the driving block 32 moves to drive the push-pull rod 8 to move, the push-pull rod 8 moves to push the end of the extrusion rod 73 to move so as to drive the extrusion rod 73 to adjust the angle, and the extrusion rod 73 drives the plurality of groups of second fixing plates 74 to approach each other to further fix a workpiece.

As shown in fig. 1, as a preferred embodiment of the present invention, a fixing plate 9 is rotatably mounted on the circumferential surface of the spin column 1, the fixing plate 9 is fixedly connected to a driving mechanism of a numerical control machine, a position limiting assembly 10 is mounted on the surface of the fixing plate 9 and is matched with the spin column 1, and the position limiting assembly 10 is used for fixing the position of the spin column 1.

As shown in fig. 3, as a preferred embodiment of the present invention, the limiting component 10 includes a plurality of sets of annularly distributed limiting holes 101 formed in a circumferential side wall of the rotating column 1, a telescopic slot 102 is formed in a side wall of the fixing plate 9, a limiting rod 103 mutually matched with the limiting holes 101 is slidably mounted in the telescopic slot 102, a second elastic member 104 fixedly connected with the telescopic slot 102 is connected to a side wall of the limiting rod 103, a clamping slot 105 is formed in a side wall of the telescopic hole 102 opposite to the limiting rod 103, a clamping block 106 is slidably connected to the clamping slot 105, and a clamping hole 107 mutually matched with the clamping block 106 is formed in a surface of the limiting rod 103.

When using, when needs carry out the rotary cutting to the work piece, through joint piece 106 and the mutual joint in joint hole 107 and then control gag lever post 103 and spacing hole 101 alternate segregation, drive column 1 through the actuating mechanism of lathe rotates and then carries out the rotary cutting to the work piece, when needs carry out fixed cutting to the work piece, after rotating column 1 to suitable angle, control board joint piece 106 and joint hole 107 alternate segregation, gag lever post 103 carries out the position fixation with spacing hole 101 joint and then to column spinner 1 under the spring action of second elastic component 104.

The second elastic member 104 may be a spring or an elastic washer.

As shown in fig. 1, as a preferred embodiment of the present invention, the first fixing plate 53, the second fixing plate 74 and the surface of the rotary column 1 facing the workpiece 1 are provided with anti-skid pads.

The working principle of the invention is as follows: when needing to fix the work piece, place the work piece on the surface of column spinner 1, start hydraulic cylinder 31 and drive transmission piece 32 and remove in control chamber 2, transmission piece 32 promotes the stripper plate 65 and removes along the direction of gag lever post 64 at the removal in-process, stripper plate 65 removes and drives control line 63 and remove and then drive slider 52 and remove in spout 51 and then carry out preliminary fixed to the work piece through first fixed plate 53, make the work piece be in suitable fixed position, when the transmission piece 32 removes, it is close to each other and further fix the work piece to control multiunit second fixed plate 74 through the electronic extrusion stem 73 angle of push-and-pull rod 8, first fixed plate 74 and first fixed plate 53 mutually support can all-roundly improve the stability of work piece clamp fastening timing, effectively avoid producing the work piece and rocking when processing the work piece.

When the workpiece needs to be rotationally cut, the limiting rod 103 is controlled to be separated from the limiting hole 101 by the fact that the clamping block 106 is clamped with the clamping hole 107, the rotary column 1 is driven to rotate through a driving mechanism of the machine tool so that the workpiece can be rotationally cut, when the workpiece needs to be fixedly cut, the rotary column 1 is rotated to a proper angle, the control block 106 is separated from the clamping hole 107, and the limiting rod 103 is clamped with the limiting hole 101 under the elastic action of the second elastic piece 104 so that the rotary column 1 can be fixed in position.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A kind of NC machine tool uses the hydraulic clamp, including the rotary column, the said rotary column links with NC machine tool driving mechanism, the interior of rotary column has control chambers, the interior of control chamber is fitted with the drive mechanism, characterized by that, the said drive mechanism includes the hydraulic cylinder of fixed mounting of inner wall of control chamber, the telescopic link of the hydraulic cylinder connects with the drive block located in control chamber fixedly;

2. The hydraulic clamp for the numerical control machine tool according to claim 1, wherein the fixed portion comprises a plurality of sets of sliding grooves formed in the surface of the rotating column, sliding blocks are slidably mounted in the sliding grooves, first elastic members connected with the sliding blocks are fixedly connected to the inner walls of the sliding grooves, first fixed plates extending out of the sliding grooves are fixedly connected to the surfaces of the sliding blocks, and the sliding blocks are connected with the transmission portion.

3. The hydraulic clamp for the numerical control machine tool according to claim 2, wherein the transmission part comprises a through groove which is formed in the side wall of the control cavity towards the inside of the rotary column and is communicated with the sliding groove, a plurality of groups of limiting rods are fixedly installed on the side wall of the control cavity close to the fixing part, a squeezing plate which is matched with the transmission block is connected to the surface of each limiting rod in a sliding mode, a guide wheel is rotatably installed between the side walls of the control cavity, and a control line which penetrates through the through groove and the guide wheel, extends into the control cavity and is fixedly connected with the squeezing plate is fixedly connected to the side wall of the sliding block.

4. The hydraulic clamp for the numerical control machine tool according to claim 2, wherein the second clamping mechanism comprises a rotating hole formed in the surface of the rotating column and communicated with the control cavity, a rotating rod is rotatably mounted in the rotating hole, an extrusion rod is fixedly connected to the rotating rod, one end of the extrusion rod, which is located in the control cavity, is rotatably connected with the push-pull rod, and one end of the extrusion rod, which is located outside the rotating column, is rotatably connected with a second fixing plate.

5. The hydraulic clamp for the numerical control machine tool according to claim 4, wherein the surfaces of the first fixing plate, the second fixing plate and the rotating column facing the workpiece are provided with anti-slip pads.

6. The hydraulic clamp for the numerical control machine tool according to claim 1, wherein a fixed plate is rotatably mounted on the circumferential surface of the rotating column, the fixed plate is fixedly connected with a driving mechanism of the numerical control machine tool, and a limiting assembly which is matched with the rotating column is mounted on the surface of the fixed plate and is used for fixing the position of the rotating column.

7. The hydraulic clamp for the numerical control machine tool according to claim 6, wherein the limiting assembly comprises a plurality of sets of limiting holes which are annularly distributed and are formed in the circumferential side wall of the rotating column, a telescopic groove is formed in the side wall of the fixed plate, a limiting rod which is matched with the limiting holes is slidably mounted in the telescopic groove, a second elastic piece which is fixedly connected with the telescopic groove is connected to the side wall of the limiting rod, a clamping groove is formed in the side wall of the telescopic groove opposite to the limiting rod, a clamping block is slidably connected in the clamping groove, and a clamping hole which is matched with the clamping block is formed in the surface of the limiting rod.