CN212371644U

CN212371644U - Clamping mechanism for drilling

Info

Publication number: CN212371644U
Application number: CN202020959010.9U
Authority: CN
Inventors: 宋德勋
Original assignee: Chongqing Jiude Machinery Manufacturing Co ltd
Current assignee: Chongqing Jiude Machinery Manufacturing Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-01-19
Anticipated expiration: 2030-05-29

Abstract

The utility model relates to a machining centre gripping field, concretely relates to fixture for drilling, including a frame body and a clamping cylinder, the clamping cylinder is rotationally connected on the frame body, the clamping columns with evenly distributed circumference are fixedly connected on the circumferential side surface of the clamping cylinder, and the frame body is slidably connected with a clamping block for offsetting the clamping columns; the clamping cylinder is provided with a clamping block for fixing the workpiece. This scheme has realized that fixture need not to loosen the rotation that can realize the work piece with the work piece.

Description

Clamping mechanism for drilling

Technical Field

The utility model relates to a machining centre gripping field, concretely relates to fixture for drilling.

Background

The reducer casing is cylindrical, and when the reducer casing is machined, a plurality of mounting holes need to be radially drilled in the circumferential direction of the circumferential side wall of the reducer casing. At present, when the reducer casing is drilled, the reducer casing needs to be fixed to the clamping mechanism, and the reducer casing is fixed through the clamping mechanism, so that the reducer casing cannot move during drilling, and the drilling precision is guaranteed.

However, each time one hole is drilled in the circumferential side surface of the reducer case, it is necessary to rotate the reducer case so that the other portion of the circumferential side wall faces the drill to drill the other portion of the circumferential side wall of the reducer case. When rotating the reduction gear casing like this at every turn, because the reduction gear casing is the fixture centre gripping, the event needs to make fixture loosen the reduction gear casing to just can make the reduction gear casing can rotate, after reduction gear casing rotated suitable position, make fixture fix the reduction gear casing centre gripping again, reduction gear casing removes when avoiding drilling. So, every time make the reduction gear casing rotate once, all need control fixture loosen reduction gear casing and fix once more, and the operation is very loaded down with trivial details.

SUMMERY OF THE UTILITY MODEL

The utility model discloses it is providing fixture for drilling to realize fixture and need not to loosen the rotation that can realize the work piece with the work piece.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the clamping mechanism for drilling comprises a frame body and a clamping cylinder, wherein the clamping cylinder is rotatably connected to the frame body, clamping columns which are uniformly distributed on the circumference are fixedly connected to the circumferential side surface of the clamping cylinder, and clamping blocks which are used for abutting against the clamping columns are connected to the frame body in a sliding manner; the clamping cylinder is provided with a clamping block for clamping and fixing the workpiece.

The principle and the advantages of the scheme are as follows: the frame body is a supporting carrier of the whole clamping mechanism. The clamping cylinder is used for fixing the workpiece, and the workpiece on the clamping cylinder is abutted through the clamping block, so that the workpiece is fixed on the clamping cylinder. When a workpiece needs to be drilled, the clamping block is slid to enable the clamping block to enter between two adjacent clamping columns, the clamping block abuts against the clamping columns, the clamping block clamps the clamping columns, the clamping cylinder is fixed, the clamping cylinder cannot freely rotate on the frame body, the clamping cylinder is in a stable static state when the workpiece is drilled, and the clamping cylinder is prevented from rotating to reduce drilling precision when the workpiece is drilled. When the drilling position of a workpiece needs to be changed, the clamping block slides away from the position between two adjacent clamping columns, the clamping columns are not abutted by the clamping block any more, the clamping cylinder can rotate relative to the frame body at the moment, the clamping cylinder rotates, the clamping cylinder drives the workpiece to rotate together, so that the change of the position on the workpiece, which is opposite to the drill bit, is realized, after the workpiece rotates to a proper position, the clamping block slides to the position between the two clamping columns to fix the clamping cylinder, and then the corresponding position of the workpiece is drilled. From this, when rotating the work piece, need not to take off the work piece from fixture, realized through this scheme that fixture need not to loosen the rotation that can realize the work piece with the work piece, need not to take off the work piece from fixture repeatedly and fix to fixture on, the operation is simple and convenient more.

Preferably, as an improvement, radial threaded connection has a plurality of to support tight bolt on the clamping cylinder, and the grip block rotates to be connected on the tip that supports tight bolt, and the grip block is along the inside of clamping cylinder's radial direction sliding connection, supports tight bolt and keeps away from the one end of grip block and is located the outside of clamping cylinder. Therefore, the clamping bolt is screwed down, the clamping bolt drives the clamping block to move in the clamping cylinder in the radial direction, the clamping block is clamped on the workpiece, and the clamping block is connected to the end portion of the clamping bolt in a rotating mode.

Preferably, as an improvement, one end of the abutting bolt, which is positioned at the outer side of the clamping cylinder, is fixedly connected with a deflector rod. Therefore, the rotation of the abutting bolt is realized by shifting the shifting lever, and compared with the mode that the hand directly screws one end of the abutting bolt positioned outside the clamping cylinder, the shifting lever saves more labor when the abutting bolt rotates.

Preferably, as an improvement, a supporting column is coaxially and fixedly connected inside the clamping cylinder. Therefore, after the cylindrical workpiece is inserted into the clamping cylinder, the inner wall of the workpiece is supported by the supporting column, so that the inner wall of the workpiece is supported by the supporting column, the outer wall of the workpiece is clamped by the clamping block, and the workpiece is positioned in the clamping cylinder more stably.

Preferably, as an improvement, the frame body is provided with an air cylinder, and an air cylinder rod of the air cylinder is fixedly connected with the clamping block. From this, the slip of fixture block has been realized through the flexible of the cylinder pole of cylinder, need not artifical slip fixture block, and the operation is fairly simple to can make the fixture block more tight that the card post supported through the cylinder.

Preferably, as an improvement, the grip block is kept away from one side fixedly connected with rubber block of holding tightly the bolt, and the rubber block is kept away from a side of holding tightly the bolt and is the arcwall face. From this, when the grip block supported the work piece tightly, the rubber block supported with the work piece, and the coefficient of friction of rubber block is great for support tight effect to the work piece is better. The arc-shaped surface can enable the rubber block to be matched with the circumferential side wall of the workpiece, and is beneficial to increasing the contact area of the rubber block and the circumferential side wall of the workpiece.

Preferably, as an improvement, the clamping column is coaxially and rotatably connected with a rotating sleeve. From this, the fixture block slides between adjacent card post and when supporting the card post tightly, the rotation cover on the card post offsets with the lateral wall of fixture block, rotate the cover and can take place certain rotation on the card post along with the removal of fixture block under the effect of the frictional force of fixture block, the friction type between card post and the fixture block is rolling friction like this, frictional force is less, do benefit to the fixture block like this and remove between adjacent card post, on the other hand can avoid the frictional force between card post and the fixture block great and make the card post by wearing and tearing bad, be favorable to improving the life of card post.

Preferably, as a modification, a scale value for indicating a rotation angle of the grip cylinder is provided on a circumferential side surface of the grip cylinder. From this, when rotating the centre gripping section of thick bamboo, the turned angle of accessible scale value direct reading work piece, through the reading to the angle, the rotating position of the control work piece of being convenient for like this for the drilling position of work piece is more accurate.

Preferably, as an improvement, the driving lever is connected with the bolts in a sliding manner along the radial direction of the clamping cylinder, a plurality of insertion holes capable of being opposite to the bolts are formed in the circumferential side wall of the clamping cylinder, and the bolts are inserted into the insertion holes. Therefore, when the clamping block clamps the workpiece, the plug pin can be inserted into the jack and is positioned in the jack, so that the clamping bolt cannot rotate freely, the clamping block can stably clamp the workpiece, and the clamping block cannot stably clamp the workpiece due to looseness of the clamping bolt is avoided. Because the quantity of jack has a plurality ofly, consequently after the grip block wearing and tearing appear, because the thickness of grip block can change, has the prerequisite of the same tight power of support to the work piece at the grip block under, the turned angle who supports tight bolt can be different, and the bolt on the driving lever will be relative with the jack of difference like this to make the grip block wear and tear the back, still can fix the tight bolt of support in inserting the jack through the bolt.

Preferably, as an improvement, the bottom of the jack is fixedly connected with a magnet, and the bolt is an iron rod. From this, the bolt inserts back in the jack, and magnet attracts the iron set to it is more stable to make the bolt be arranged in the jack, rotates the in-process at a centre gripping section of thick bamboo, and the bolt is difficult for coming out from the jack.

Drawings

Fig. 1 is a perspective view of a clamping mechanism for drilling in example 1.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a schematic structural diagram of the clamping block.

Fig. 4 is a plan view of the drill jig of embodiment 2.

FIG. 5 is a schematic view of the structure of the clip of embodiment 3.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a frame body 1, a support rod 2, a cylinder 3, a fixture block 4, a clamping cylinder 5, a support column 6, a fastening bolt 7, a deflector rod 8, a scale value 9, a fixture column 10, a clamping block 11, a hard part 111, a rubber block 112, a rotating sleeve 12, an insertion hole 13, a plug pin 14 and a guide rod 15.

Example 1

Substantially as shown in figures 1 to 3 of the accompanying drawings: the clamping mechanism for drilling comprises a frame body 1 and a clamping cylinder 5, wherein four supporting rods 2 are welded at the bottom of the frame body 1. One end of the clamping cylinder 5 in the embodiment is closed, an opening is formed in one end of the clamping cylinder, a supporting column 6 is coaxially welded in the clamping cylinder 5, and the supporting column 6 penetrates out of the opening of the clamping cylinder 5. The blind end of a centre gripping section of thick bamboo 5 passes through the bearing and rotates the connection on support body 1, and the welding has a plurality of card posts 10 of circumference evenly distributed on the circumference side of a centre gripping section of thick bamboo 5, and the quantity of card post 10 in this embodiment is twelve, has the clearance between the adjacent card post 10. The equal lateral sliding connection has the fixture block 4 that is used for offsetting with card post 10 on the support body 1 upper and lower, and specific sliding connection mode is: be equipped with horizontal spout on the support body 1, the welding has the slider on the fixture block 4, and the slider is arranged in the spout. Therefore, the latch 4 abuts against the adjacent latch posts 10 by sliding the latch 4 between the adjacent latch posts 10, so that the clamping cylinder 5 is fixed and cannot rotate freely. The two clamping blocks 4 on the upper side and the lower side of the frame body 1 are simultaneously abutted against the two corresponding clamping columns 10, so that the clamping cylinder 5 is more stable to fix. In order to facilitate the sliding of the clamping block 4, the upper side surface and the lower side surface of the frame body 1 are both provided with air cylinders 3 through screws, and air cylinder rods of the air cylinders 3 are fixedly connected with the clamping block 4 through screws. In order to make the side surface of the latch 4 closely contact with the latching post 10, the side surface of the latch 4 in this embodiment is an inclined surface, i.e. the width of the bottom of the two sides of the latch 4 is smaller than the width of the top. In order to facilitate the fixture block 4 to enter the gap between the adjacent fixture posts 10, the end of the fixture block 4 away from the cylinder 3 in the embodiment is a small end.

The clamping cylinder 5 is provided with a clamping block 11 for fixing the workpiece. Combine shown in fig. 2, radial threaded connection has four to support tight bolt 7 on the clamping cylinder 5, supports tight bolt 7 even circumference and distributes on clamping cylinder 5, and grip block 11 rotates through the bearing to be connected on supporting the tip that tight bolt 7 is located clamping cylinder 5 is inside, and grip block 11 is in clamping cylinder 5's inside along clamping cylinder 5's radial direction sliding connection, and specific sliding connection mode is: guide rods 15 are welded on one sides, close to the inner wall of the clamping barrel 5, of the clamping blocks 11, guide holes are formed in the inner wall of the clamping barrel 5, and the guide rods 15 are located in the guide holes and slide relative to the guide holes. One end of the abutting bolt 7, which is far away from the clamping block 11, is a screwing end and is positioned on the outer side of the clamping cylinder 5, a shifting lever 8 is welded on the screwing end of the abutting bolt 7, and the direction of the shifting lever 8 is perpendicular to the direction of the abutting bolt 7. Referring to fig. 3, in order to enable the clamping block 11 to stably clamp the workpiece, the clamping block 11 in this embodiment includes a hard portion 111 rotatably connected to the fastening bolt 7 and a rubber block 112, the hard portion 111 is made of iron, the rubber block 112 is adhered to the hard portion 111, and a side of the rubber block 112 away from the fastening bolt 7 is an arc-shaped surface matched with a circumferential side of the workpiece. In fig. 1, a ring-shaped scale value 9 for indicating the rotation angle of the clamping cylinder 5 is arranged on the circumferential side surface of the clamping cylinder 5, and the rotation angle of the workpiece driven by the clamping cylinder 5 can be known by reading the scale value 9 corresponding to the position of the fixture block 4.

The specific implementation process is as follows: the workpiece in this embodiment is a reducer housing having a cylindrical structure, and when the workpiece needs to be drilled, the cylindrical reducer housing is sleeved on the support column 6, and the workpiece is pushed into the clamping cylinder 5. The four shifting rods 8 are sequentially shifted, when the shifting rods 8 are shifted, the shifting rods 8 drive the abutting bolts 7 to rotate, the abutting bolts 7 drive the clamping blocks 11 to move towards the direction close to the workpiece, and the rubber blocks 112 on the clamping blocks 11 abut against the circumferential side face of the workpiece, so that the clamping blocks 11 clamp the circumferential side face of the workpiece. Then start two gas of support body 1 upper and lower downside, two cylinders 3 promote fixture block 4 through the cylinder pole and remove to the clearance between two card posts 10, and finally the side of fixture block 4 offsets with card post 10, and fixture block 4 will block post 10 to fix clamping cylinder 5, clamping cylinder 5 can not free rotation on support body 1, makes when drilling the work piece, and clamping cylinder 5 is in stable quiescent condition, and clamping cylinder 5 rotates and makes the drilling precision reduce when avoiding drilling.

When the drilling position of a workpiece needs to be changed, the clamping block 4 is driven to come out from a gap between two adjacent clamping columns 10 through the air cylinder 3, the clamping columns 10 are not abutted by the clamping block 4 any more, at the moment, the clamping cylinder 5 can rotate relative to the frame body 1, the clamping cylinder 5 is manually driven to rotate, the clamping cylinder 5 drives the workpiece to rotate together, so that the change of the position on the workpiece relative to a drill bit is realized, through reading the scale value 9 on the clamping cylinder 5, the rotating angle of the workpiece driven by the clamping cylinder 5 can be known, after the workpiece rotates to a proper position, the clamping block 4 is slid between the two clamping columns 10 to abut against the clamping block 4 and the clamping columns 10, the clamping cylinder 5 is fixed, and then the corresponding position of the workpiece is drilled.

From this, through this embodiment, when rotating the work piece, need not to take off the work piece from fixture, realized fixture through this scheme and need not to loosen the rotation that can realize the work piece with the work piece, the operation is simple and convenient more.

Example 2

Referring to fig. 4, in the present embodiment, the shift lever 8 is slidably connected with the latch pins 14 along the radial direction of the clamping cylinder 5, specifically, the shift lever 8 is provided with a sliding hole, and the latch pins 14 are located in the sliding hole and can slide in the sliding hole. The circumferential side wall of the clamping cylinder 5 is provided with a plurality of insertion holes 13 which can be opposite to the pins 14, the pins 14 on each shift lever 8 correspond to four insertion holes 13 in the embodiment, the angle between two adjacent insertion holes 13 in the four insertion holes 13 is 20 degrees, and the pins 14 are inserted in the insertion holes 13. The bottom of the jack 13 is adhered with a magnet, and the bolt 14 is an iron rod. By the latch 14 attracting the magnet in the receptacle 13, so that the latch 14 is inserted into the receptacle 13, the latch 14 is not easily slid out of the receptacle 13 when the clamping cylinder 5 is rotated, so that the latch 14 is stably positioned in the receptacle 13.

Therefore, when the clamping block 11 clamps the workpiece, the bolt 14 can be inserted into the jack 13, the bolt 14 is positioned in the jack 13, and the shift lever 8 cannot swing, so that the fastening bolt 7 cannot rotate freely, the clamping block 11 can stably clamp the workpiece, and the problem that the fastening bolt 7 is loosened to cause the clamping block 11 not to stably clamp the workpiece is avoided. Because the quantity of jack 13 has a plurality ofly, consequently after grip block 11 appears wearing and tearing, grip block 11's thickness can become thin, has under the prerequisite of the same tight power of support to the work piece at grip block 11, supports tight bolt 7's turned angle can grow, and the swing angle grow of driving lever 8 like this, and bolt 14 on the driving lever 8 will be relative with different jacks 13 to make grip block 11 appear wearing and tearing back, still can insert in jack 13 through bolt 14 and fix supporting tight bolt 7.

Example 3

Referring to fig. 5, the clamping column 10 is coaxially and rotatably connected with a rotating sleeve 12, and the rotating sleeve 12 may be a ball bearing. From this, when the fixture block 4 slides between adjacent card post 10 and supports tight card post 10, the rotation cover 12 on the card post 10 offsets with the lateral wall of fixture block 4, the rotation cover 12 can take place certain rotation on the card post 10 along with the removal of fixture block 4 under the effect of the frictional force of fixture block 4, the friction type between card post 10 and the fixture block 4 is rolling friction like this, frictional force is less, do benefit to the fixture block 4 and remove between adjacent card post 10 on the one hand like this, on the other hand can avoid the frictional force between card post 10 and the fixture block 4 great and make card post 10 worn and torn badly, be favorable to improving the life of card post 10.

The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. Fixture for drilling, including support body and a centre gripping section of thick bamboo, its characterized in that: the clamping cylinder is rotatably connected to the frame body, clamping columns which are uniformly distributed on the circumference are fixedly connected to the circumferential side surface of the clamping cylinder, and clamping blocks which are used for abutting against the clamping columns are connected to the frame body in a sliding mode; and the clamping cylinder is provided with a clamping block for clamping and fixing the workpiece.

2. The clamping mechanism for drilling according to claim 1, wherein: the clamping cylinder is radially and threadedly connected with a plurality of abutting bolts, the clamping block is rotatably connected to the end part of the abutting bolts, the clamping block is slidably connected to the inside of the clamping cylinder along the radial direction of the clamping cylinder, and one end, far away from the clamping block, of the abutting bolts is located on the outer side of the clamping cylinder.

3. The clamping mechanism for drilling according to claim 2, wherein: and one end of the abutting bolt, which is positioned at the outer side of the clamping cylinder, is fixedly connected with a shifting lever.

4. The clamping mechanism for drilling according to claim 2, wherein: the inside coaxial fixedly connected with support column of a centre gripping section of thick bamboo.

5. The clamping mechanism for drilling according to claim 1, wherein: the frame body is provided with an air cylinder, and an air cylinder rod of the air cylinder is fixedly connected with the clamping block.

6. The clamping mechanism for drilling according to claim 2, wherein: one side of the clamping block, which is far away from the abutting bolt, is fixedly connected with a rubber block, and one side of the rubber block, which is far away from the abutting bolt, is an arc-shaped surface.

7. The clamping mechanism for drilling according to claim 1, wherein: the clamping column is coaxially and rotatably connected with a rotating sleeve.

8. The clamping mechanism for drilling according to claim 1, wherein: and a scale value used for representing the rotation angle of the clamping cylinder is arranged on the circumferential side surface of the clamping cylinder.

9. The clamping mechanism for drilling according to claim 3, wherein: the driving rod is connected with bolts in a sliding mode in the radial direction of the clamping cylinder, a plurality of insertion holes capable of being opposite to the bolts are formed in the circumferential side wall of the clamping cylinder, and the bolts are inserted into the insertion holes.

10. The clamping mechanism for drilling according to claim 9, wherein: the bottom fixedly connected with magnet of jack, the bolt is the iron set.