CN212192234U

CN212192234U - Effectual high accuracy tool of centre gripping

Info

Publication number: CN212192234U
Application number: CN202020965534.9U
Authority: CN
Inventors: 罗石先; 罗小平; 高志雄; 谭向荣
Original assignee: Weidi Xingye Technology Shenzhen Co ltd
Current assignee: Weidi Xingye Technology Shenzhen Co ltd
Priority date: 2020-05-30
Filing date: 2020-05-30
Publication date: 2020-12-22
Anticipated expiration: 2030-05-30

Abstract

The utility model relates to a high-precision jig with good clamping effect, which comprises an installation part and a base arranged on one side of the installation part, wherein the base is connected with at least two clamping parts in a sliding way on the side far away from the installation part, the clamping parts are arranged in a surrounding way, the clamping parts are connected with a driving component for driving the clamping parts to move, and after the clamping parts move, the clamping parts have two states of expansion and contraction; the clamping part is characterized in that one inward side of the clamping part is arc-shaped, and when the clamping part contracts, the arc-shaped sides of the clamping part are connected into a circle which is internally used for fixing a workpiece. The utility model discloses the cylindric work piece of centre gripping that can stabilize has the machining precision that improves the work piece, promotes the effect of product quality.

Description

Effectual high accuracy tool of centre gripping

Technical Field

The utility model belongs to the technical field of the technique of CNC tool and specifically relates to a effectual high accuracy tool of centre gripping is related to.

Background

CNC is also called digit control machine tool, is a be equipped with program control system, is used for processing the automatic machine tool of work piece, installs the tool on the CNC usually for carry out centre gripping and fixed to the work piece.

Present grant notice number is CN 208496380U's utility model, and it discloses a CNC adds clamping apparatus, including the base, install the fly leaf on the base, fly leaf one end integrated into one piece has the backplate, and still slidable mounting has splint on the fly leaf, and splint are close to the sliding connection in backplate one end and have the slip splint, and the slip splint in-connection has the spring that plays the cushioning effect to it. When the CNC machining clamp clamps a workpiece, the workpiece is placed between the back plate and the clamping plate, and the back plate and the clamping plate can clamp the workpiece after the clamping plate slides towards the back plate.

The above prior art solutions have the following drawbacks: when the CNC machining clamp clamps a workpiece, the back plate and the clamping plate are in contact with the workpiece, so that the purpose of clamping the workpiece is achieved. However, when the workpiece is cylindrical, the surface of the workpiece is arc-shaped, and the surface of the clamping plate and the backboard for clamping the workpiece is plane, that is, the contact area between the workpiece and the clamping plate and the backboard is small, so that the workpiece is easily clamped insecurely, the processing precision of the workpiece is reduced, and the product quality is affected.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing an effectual high accuracy tool of centre gripping, the cylindric work piece of centre gripping that it can stabilize has the machining precision that improves the work piece, promotes the effect of product quality.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a high-precision jig with a good clamping effect comprises an installation part and a base arranged on one side of the installation part, wherein at least two clamping parts are connected to one side, far away from the installation part, of the base in a sliding mode, the clamping parts are arranged in a surrounding mode, a driving assembly used for driving the clamping parts to move is connected to the clamping parts, and the clamping parts are in an opening state and a contraction state after moving; the clamping part is characterized in that one inward side of the clamping part is arc-shaped, and when the clamping part contracts, the arc-shaped sides of the clamping part are connected into a circle which is internally used for fixing a workpiece.

Through adopting above-mentioned technical scheme, through setting up mobilizable clamping part, the clamping part shrink back, can form circular space in the middle of the clamping part. When the clamping parts are opened, the workpiece is placed in the middle of the clamping parts, and when the clamping parts are contracted, the workpiece is clamped between the clamping parts, so that the purpose of fixing the workpiece is achieved. Because the clamping parts are circular, when the clamping parts clamp the cylindrical workpiece, the surfaces of the clamping parts can be attached to the surface of the workpiece, namely the contact area between the workpiece and the clamping parts is large, so that the jig can stably clamp the workpiece, and the jig has the effects of improving the processing precision of the workpiece and improving the product quality.

The present invention may be further configured in a preferred embodiment as: the clamping parts are four in number, and after the clamping parts shrink, the edges of two adjacent clamping parts are connected with each other.

Through adopting above-mentioned technical scheme, the clamping part shrink back, four clamping part interconnect, zonulae occludens for tool structure is compacter, and is whole more stable, and the centre gripping effect is better, thereby the product quality is better.

The present invention may be further configured in a preferred embodiment as: the driving assembly comprises an air cylinder installed on the base, an air cylinder piston rod is connected to the clamping portion, and the air cylinder piston rod moves to drive the clamping portion to move.

Through adopting above-mentioned technical scheme, when the piston rod of the cylinder moved, can drive clamping part and remove. When the piston rod of the cylinder extends out, the clamping part contracts; when the cylinder piston rod retracts, the clamping part expands, and therefore expansion and contraction of the clamping part are achieved.

The present invention may be further configured in a preferred embodiment as: the air cylinder is connected with an air pipe and communicated with each other through the air pipe, and the air cylinder is communicated with a power source.

Through adopting above-mentioned technical scheme, pass through the trachea intercommunication with the cylinder after, can drive all cylinders and remove simultaneously through a power supply, realize the synchronous motion of cylinder, further improve the clamping effect of clamping part to the work piece.

The present invention may be further configured in a preferred embodiment as: the base is detachably connected with a fixing part, the fixing part is arranged in the middle of the clamping part, and a gap for fixing a workpiece is formed between the clamping part and the fixing part.

Through adopting above-mentioned technical scheme, behind the middle installation fixed part of clamping part, when the fixed part was installed on the base, the tool can be used for the cylindric work piece of centre gripping, and the fixed part gives work piece internal support power for the work piece can be by the centre gripping more firm, and non-deformable.

The present invention may be further configured in a preferred embodiment as: the base is provided with a positioning hole, the installation part is provided with a positioning column capable of being inserted into the positioning hole, and when the base is installed on the installation part, the positioning column is inserted into the positioning hole.

Through adopting above-mentioned technical scheme, in order can be convenient, swift with pedestal mounting on the installation department, set up matched with reference column and locating hole, when the locating column inserted the locating hole, the position of installation department installation base can be aimed at easily to the base mounting is convenient for on the installation department, plays the effect of location.

The present invention may be further configured in a preferred embodiment as: the base one side is connected to the installation department is equipped with the gusset plate, after the pedestal mounting was on the installation department, the gusset plate is connected in the base, the gusset plate passes through the screw reinforcement base.

Through adopting above-mentioned technical scheme, through setting up gusset plate and screw, the screw can link to each other gusset plate and base to strengthen unable adjustment base, and then indirectly strengthen fixed work piece, reach the purpose of further fixed work piece.

The present invention may be further configured in a preferred embodiment as: the reinforcing plate is equipped with at least one, and evenly connects in the base edge.

Through adopting above-mentioned technical scheme, to a certain extent, the quantity of gusset plate is more, and it is more even to distribute, and the gusset plate is better to the fixed effect of base.

To sum up, the utility model discloses a following at least one useful technological effect:

1. by arranging the movable clamping part, a circular space can be formed in the middle of the clamping part after the clamping part is contracted. When the clamping parts are opened, the workpiece is placed in the middle of the clamping parts, and when the clamping parts are contracted, the workpiece is clamped between the clamping parts, so that the purpose of fixing the workpiece is achieved. Because the clamping parts form a circle, when the clamping parts clamp a cylindrical workpiece, the surfaces of the clamping parts can be attached to the surface of the workpiece, namely the contact area between the workpiece and the clamping parts is larger, so that the jig can stably clamp the workpiece, and the effects of improving the processing precision of the workpiece and improving the product quality are achieved;

2. by arranging the air pipe, after the air cylinders are communicated through the air pipe, all the air cylinders can be driven to move simultaneously through one power source, so that the synchronous movement of the air cylinders is realized, and the clamping effect of the clamping part on the workpiece is further improved;

3. by arranging the fixing part, when the fixing part is arranged on the base, the jig can be used for clamping a hollow cylindrical workpiece, and the fixing part gives a supporting force to the inside of the workpiece, so that the workpiece can be clamped more stably and is not easy to deform;

4. through setting up gusset plate and screw, the screw can link to each other gusset plate and base to strengthen the unable adjustment base, and then indirectly strengthen fixed work piece, reach the purpose of further fixed work piece.

Drawings

Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention when the clamping portion contracts.

Fig. 2 is a schematic view of a structure for embodying one surface of the base attaching part.

Fig. 3 is a schematic view of the overall structure of the embodiment of the present invention when the clamping portion is opened.

Fig. 4 is a schematic structural view for embodying perforations.

In the figure, 1, mounting part; 2. a base; 21. mounting grooves; 22. positioning holes; 3. a clamping portion; 4. a screw; 5. a fixed part; 61. a cylinder; 62. connecting blocks; 7. a reinforcing plate; 8. an air tube; 81. an air inlet pipe; 82. an air outlet pipe; 83. an intake manifold; 84. a gas outlet header pipe; 9. a power source; 101. a positioning column; 102. and (6) perforating.

Detailed Description

The present invention will be described in further detail with reference to the accompanying fig. 1-4.

Refer to fig. 1, do the utility model discloses an effectual high accuracy tool of centre gripping, the cylindric work piece of centre gripping that it can stabilize has the machining precision that improves the work piece, promotes the effect of product quality. This effectual high accuracy tool of centre gripping is including being used for installing installation department 1 on the digit control machine tool to and install base 2 on installation department 1, install four mobilizable clamping part 3 on the base 2, can open or shrink after clamping part 3 removes, when clamping part 3 shrinks, cylindric work piece can be by the centre gripping between four clamping part 3 again.

The side of the base 2 is square, and four top corners of the base 2 are arranged on the mounting part 1 through screws 4. One side surface of the base 2 is connected with the mounting part 1, and the other side surface is connected with the clamping part 3. The base 2 is connected the 3 one side centers of clamping part and is equipped with fixed part 5, and the fixed part 5 side is circular, and the fixed part 5 center passes through screw 4 and can dismantle the connection in base 2.

The clamping portion 3 is uniformly arranged around the fixing portion 5, the clamping portion 3 is substantially trapezoidal in shape as a whole, and the included angle formed between the edges of the clamping portion 3 where the two waists are located is 90 °. When the clamping parts 3 contract, namely when the clamping parts 3 clamp the workpiece, the waists of two adjacent clamping parts 3 are connected with each other, so that the structure is more compact, and the whole structure is more stable.

The inward side of the clamping portion 3, that is, the side of the clamping portion 3 close to the fixing portion 5, is an inward concave arc, and when the clamping portion 3 clamps a workpiece, the sides of the four clamping portions 3 close to the fixing portion 5 are connected to form a circle matched with the fixing portion 5. A gap is formed between the circle surrounded by the clamping part 3 and the fixing part 5, when a processed workpiece is hollow and at least one end of the processed workpiece is open, under the matching of the clamping part 3 and the fixing part 5, one end of the workpiece opening can be sleeved on the fixing part 5 and clamped, and the fixing part 5 gives internal supporting force to the workpiece, so that the workpiece is clamped stably. When the processed workpiece is solid, the fixing part 5 is detached from the base 2, and the fixing part 5 makes room for the workpiece to be placed so as to clamp the workpiece. Preferably, the edge of the fixing portion 5 is chamfered so as to facilitate the workpiece to be sleeved on the fixing portion 5.

Referring to fig. 1 and 2, four mounting grooves 21 are formed in the surface of the base 2 away from the clamping portion 3, and the mounting grooves 21 penetrate through the surface of the base 2 connected with the clamping portion 3 and the surface of the base 2 connected with the mounting portion 1. An air cylinder 61 is installed in the installation groove 21, the four air cylinders 61 respectively correspond to the four clamping portions 3, piston rods of the air cylinders 61 face to a circular center enclosed by the clamping portions 3, and when the piston rods of the air cylinders 61 extend out or retract, the piston rods of the air cylinders 61 move towards a direction close to or far away from the circular center. Be connected with connecting block 62 on the cylinder 61 piston rod, connecting block 62 is connected in the one side that base 2 was connected to clamping part 3, and when cylinder 61 piston rod removed, can drive connecting block 62 and remove, drives clamping part 3 again and removes. As shown in fig. 3, when all the cylinder 61 piston rods extend, the clamping portion 3 contracts, and when all the cylinder 61 piston rods retract, the clamping portion 3 expands, thereby realizing the expansion or contraction of the clamping portion 3.

Referring to fig. 1 and 3, when the clamping portion 3 is opened, a workpiece is placed in the middle of the clamping portion 3, and when the clamping portion 3 is contracted, the workpiece is clamped between the clamping portions 3, so as to achieve the purpose of fixing the workpiece. Because form circularly between clamping part 3, when the cylindric work piece of clamping part 3 centre gripping, clamping part 3 surface can laminate in the work piece surface, and the area of contact that also is work piece and clamping part 3 is great to make the centre gripping work piece that the tool can be firm, have the effect that improves the machining precision of work piece, promotion product quality.

Referring to fig. 1, the workpiece may vibrate when receiving an external force during a machining process, and four reinforcing plates 7 for reinforcing the base 2 are fixedly connected to the mounting portion 1 to prevent the workpiece from vibrating and affecting the stability of the base 2. After the base 2 is installed on the installation part 1, the four reinforcing plates 7 are uniformly distributed on the edge of the base 2, and the four reinforcing plates 7 are respectively connected to the four edges of the base 2. The side face of the reinforcing plate 7 is attached to the edge of the base 2, the screw 4 is arranged on the reinforcing plate 7, the screw 4 penetrates through the reinforcing plate 7 and the base 2 in a threaded mode, the reinforcing plate 7 is connected with the base 2, and therefore the purpose of reinforcing the base 2 is achieved, and the fixed workpiece is indirectly reinforced.

Referring to fig. 2, as a preferred embodiment, the air tube 8 is connected to the air cylinder 61, the air tube 8 includes an air inlet tube 81 and an air outlet tube 82, the air inlet tube 81 is connected to the four air cylinders 61, and the air outlet tube 82 is connected to the four air cylinders 61. The air inlet pipe 81 is also communicated with an air inlet header pipe 83, and the air outlet pipe 82 is also communicated with an air outlet header pipe 84. One end of the air inlet header pipe 83, which is far away from the air inlet pipe 81, and one end of the air outlet header pipe 84, which is far away from the air outlet pipe 82, are connected with a power source 9, and the power source 9 is an air compressor. The power source 9 can control the piston rods of the four cylinders 61 to move simultaneously through the air inlet pipe 81, the air outlet pipe 82, the air inlet header pipe 83 and the air outlet header pipe 84, so that the cylinders 61 move synchronously, and the clamping effect of the clamping part 3 (see fig. 1) on the workpiece is further improved. Referring to fig. 4, the base 2 and the mounting portion 1 are both provided with through holes 102 for the inlet manifold 83 and the outlet manifold 84 to pass through.

Referring to fig. 1, in order to facilitate the installation of the base 2 on the installation portion 1, two positioning holes 22 are formed in the base 2, the two positioning holes 22 are respectively formed in two opposite vertex angles of the base 2, two ends of each positioning hole 22 respectively penetrate through one surface of the base 2 connected with the installation portion 1 and one surface of the base 2 connected with the clamping portion 3. Correspondingly, one side of the mounting part 1 connected with the base 2 is provided with a positioning column 101 matched with the positioning hole 22 at a corresponding position, the axial direction of the positioning column 101 is vertical to the surface of the mounting part 1, and the positioning column 101 protrudes out of the surface of the mounting part 1. When the base 2 is installed on the re-installation part 1, the positioning column 101 can be inserted into the positioning hole 22, so that the base 2 can be easily aligned with the position of the installation part 1 for installing the base 2, and the base 2 can be conveniently and quickly installed on the installation part 1.

The implementation principle of the embodiment is as follows: when a workpiece is installed, the piston rod of the air cylinder 61 contracts to drive the connecting block 62 to move in the same direction, so that the clamping part 3 is opened, and the workpiece can be placed in the middle of the clamping part 3. When the piston rod of the cylinder 61 extends, the connecting block 62 is driven to move in the same direction, so that the clamping part 3 contracts, and the clamping part 3 contracts to clamp and fix the workpiece.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an effectual high accuracy tool of centre gripping which characterized in that: the clamping device comprises an installation part (1) and a base (2) installed on one side of the installation part (1), wherein the base (2) is connected with at least two clamping parts (3) in a sliding mode while being far away from the installation part (1), the clamping parts (3) are arranged in a surrounding mode, a driving assembly used for driving the clamping parts (3) to move is connected onto the clamping parts (3), and the clamping parts (3) are opened and contracted after moving; one inward side of the clamping portion (3) is arc-shaped, and when the clamping portion (3) contracts, the arc-shaped sides of the clamping portion (3) are connected into a circle which is internally used for fixing a workpiece.

2. The high-precision jig with good clamping effect according to claim 1, characterized in that: the number of the clamping parts (3) is four, and after the clamping parts (3) shrink, the edges of two adjacent clamping parts (3) are connected with each other.

3. The high-precision jig with good clamping effect according to claim 1, characterized in that: the driving assembly comprises an air cylinder (61) installed on the base (2), a piston rod of the air cylinder (61) is connected to the clamping portion (3), and the piston rod of the air cylinder (61) moves to drive the clamping portion (3) to move.

4. The high-precision jig with good clamping effect according to claim 3, characterized in that: the air cylinder (61) is connected with an air pipe (8), the air cylinder (61) is communicated with each other through the air pipe (8), and the air cylinder (61) is communicated with a power source (9).

5. The high-precision jig with good clamping effect according to claim 1, characterized in that: the base (2) is detachably connected with a fixing part (5), the fixing part (5) is arranged in the middle of the clamping part (3), and a gap for fixing a workpiece is formed between the clamping part (3) and the fixing part (5).

6. The high-precision jig with good clamping effect according to claim 1, characterized in that: locating hole (22) have been seted up on base (2), be equipped with reference column (101) that can insert locating hole (22) on installation department (1), when base (2) were installed on installation department (1), reference column (101) insert locating hole (22).

7. The high-precision jig with good clamping effect according to claim 1, characterized in that: installation department (1) is connected base (2) one side and is equipped with gusset plate (7), base (2) are installed back on installation department (1), gusset plate (7) are connected in base (2), base (2) are consolidated through screw (4) in gusset plate (7).

8. The high-precision jig with good clamping effect according to claim 7, characterized in that: the reinforcing plate (7) is provided with at least one reinforcing plate, and the reinforcing plate is uniformly connected to the edge of the base (2).