Combined screw tap

Abstract

The utility model relates to the technical field of mechanical tools, in particular to a combined screw tap which comprises a tap head, a combined part is arranged at the upper end of the tap head, an installation groove facilitating insertion of the tap head is formed in the bottom of the combined part, movable grooves communicated with the installation groove are formed in the two sides of the combined part in a penetrating mode, and a collision rod capable of colliding with the tap head is connected into the combined part in a sliding mode. And movable blocks are fixedly installed at the two ends of the collision rod, fixed plates are fixedly installed at the two ends of the assembly, positioning columns penetrating through the movable blocks in a sliding mode are installed between the two fixed plates which correspond to each other up and down, and first springs installed between the movable blocks and the fixed plates are installed on the positioning columns in a sleeved mode. The bumping post is clamped in the limiting groove, so that the collision rod is jacked by the inner cavity of the fixed movable groove, and when the bumping post is retracted, the first spring pushes the collision rod, so that the collision rod collides with the upper end of the screw tap, the screw tap is collided out of the mounting groove, and the broken screw tap can be quickly taken out when the screw tap is broken.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical tool technical field especially relates to a combination tap. BACKGROUND

[0002] The combination tap is widely applied in manufacturing industry, especially in the fields of metal processing, aerospace, automobile manufacturing, etc., and is used for processing various medium and small size internal threads, and the combination tap can be manually operated or worked on a machine tool, and the processing mode is flexible and various.

[0003] In the existing combination tap, when tapping by hand, the tap head needs to be aligned with the drill hole, and the tap head is installed on the combination part, which makes up for the problems of visual angle and hand operation error when aligning the drill hole, and avoids the tap head axis line being easily deviated from the drill hole axis line when the worker starts tapping the drill hole, and the tap head is convenient to install and replace when different models are needed.

[0004] However, during the tapping work of the tap head in the drill hole, the tap head is prone to breakage due to improper operation of the worker or quality decline of the tap head, which causes the tail of the tap head to be stuck in the installation groove, the surface of the tap head is relatively smooth and the exposed part after breakage is small, which makes it difficult for the worker to take out the broken tap head for replacement, thereby affecting the work efficiency. UTILITY MODEL CONTENTS

[0005] In view of the above problem that the broken tap head is difficult to take out from the installation groove, the utility model is proposed.

[0006] To solve the above technical problems, the utility model provides the following technical scheme: a combination tap, comprising a tap head, a combination part is arranged at the upper end of the tap head, an installation groove for inserting the tap head is formed in the bottom of the combination part, movable grooves communicating with the installation groove are formed in the two sides of the combination part, a striker rod which can collide with the tap head is slidably connected in the combination part, movable blocks are fixedly installed at the two ends of the striker rod;

[0007] Fixed plates are fixedly installed at the two ends of the combination part, positioning columns slidably penetrating the movable blocks are installed between the two fixed plates corresponding to the combination part in the up and down directions, first springs are sleeved on the positioning columns and installed between the movable blocks and the fixed plates, and support rings are fixedly connected to one side of the movable blocks and sleeved on the combination part.

[0008] Preferably, an auxiliary groove is formed in the bottom of the combination part, the auxiliary groove communicates with the installation groove, and a buffer pad is installed on one side of the positioning column of the fixed plate.

[0009] Preferably, the upper end of the assembly is provided with a mounting shell, the upper end of the mounting shell is provided with a limiting slot, the inner side wall of the limiting slot is provided with a moving slot, the moving slot is movably connected with a blocking column, the blocking column is provided with an inclined block at the end away from the limiting slot, and the inclined block is provided with a driving top block at the end away from the blocking column.

[0010] Preferably, the upper end of the supporting ring is provided with a limiting plate, one side of the limiting plate is provided with a clamping slot, and the limiting plate can be inserted into the limiting slot and connected with the blocking column in a matched mode.

[0011] Preferably, the side, away from the driving top block, of the inclined block is provided with a second spring, and the second spring is sleeved on the blocking column.

[0012] Preferably, the upper end of the driving top block is provided with a push block, and the push block penetrates through the upper end of the mounting shell.

[0013] The utility model discloses beneficial effects:

[0014] 1. by lifting the supporting ring, make with the movable block of fixed supporting ring along the track of positioning column lift, along with the spring shrinkage of movable block upper end, then put down the supporting ring, make the impact rod fixed connection between the movable block along the movable slot and strike down through the pressure of first spring, make the impact rod can hit out the cone head in the mounting slot, then again through the buffer pad for the impact rod unloading, reduced the damage to the structure, when the cone head breaks in the movable slot, can conveniently take out the cone head.

[0015] 2. by lifting the limiting plate of the upper end of the supporting ring to the limiting slot in the mounting shell, then by pushing the driving block, make with the driving top block of fixed connection of driving block to push side activity, the two smooth bevels of the inclined block on the two sides of the driving top block receive the friction and move to two sides when receiving the thrust, thereby drive the blocking column to move until the blocking column is clamped in the clamping slot on the limiting plate, when the driving block is pushed out in the opposite direction, the driving top block is separated, the blocking column is separated from the clamping slot through the second spring, so that the impact rod can be quickly ejected and hit, and the position of the fixed impact rod is convenient to install. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing briefly introduced, obviously, the following description in the drawing is only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings. Wherein:

[0017] Figure 1 It is the overall structure schematic diagram of the utility model.

[0018] Figure 2 It is the sectional structure schematic diagram of the utility model.

[0019] Figure 3 It is the bottom structure schematic view of the utility model.

[0020] Figure 4 It is the driving top block structure schematic view of the utility model.

[0021] Figure 5 It is the utility model Figure 4 A structure schematic view.

[0022] Mark explanation:

[0023] In the drawing: 1, tap; 2, combination part; 3, installation groove; 4, auxiliary groove; 5, movable groove; 6, impact rod; 7, movable block; 8, positioning column; 9, fixed plate; 10, first spring; 11, support ring; 12, buffer pad; 13, limiting plate; 14, clamping groove; 15, installation shell; 16, limiting groove; 17, blocking column; 18, second spring; 19, inclined block; 20, driving top block; 21, push block. Specific embodiment

[0024] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiment of the utility model is described in detail below with reference to the drawings of the specification.

[0025] Example 1

[0026] Refer to Figures 1-3 , the utility model provides a kind of combined tap for first embodiment, including tap head 1, tap head 1 is replaceable component, and front end is provided with drilling thread, and the upper end of tap head 1 is provided with combination part 2, and combination part 2 is assembled component, and the bottom of combination part 2 is provided with installation groove 3 for facilitating the insertion of tap head 1, and installation groove 3 can be connected with tap head 1, and also used to replace the tap head of different models, and movable groove 5 is crossed and communicated with installation groove 3, and the inner diameter of movable groove 5 is less than the inner diameter of installation groove 3, does not affect installation and replacement tap head 1, and combination part 2 is slidably connected with impact rod 6 that can impact with tap head 1, and impact rod 6 is horizontally placed in the inner side of movable groove 5, and the both ends of impact rod 6 extend outside combination part 2, and movable block 7 is fixedly installed at the both ends of impact rod 6, and sliding groove is communicated in the upper end and lower end of movable block 7, so that movable block can slide up and down on positioning column 8;

[0027] The fixed plate 9 is installed at both ends of the combined part 2, and there are four fixed plates which are evenly distributed on both sides of the combined part 2. The positioning column 8 which slides through the movable block 7 is installed between the two fixed plates 9 corresponding to the combined part 2. The positioning column 8 is fixedly connected with the fixed plate 9 and is aligned with the impact rod 6. The sliding groove opened on the movable block 7 is movably connected with the positioning column 8, so that the impact rod 6 can slide up and down in the movable groove 5. The first spring 10 is sleeved on the positioning column 8 and is installed between the movable block 7 and the fixed plate 9. The first spring 10 can push the movable block 7 to move to the bottom of the positioning column 8 and contact with the fixed plate 9. The supporting ring 11 is fixedly connected on the combined part 2 at one side of the movable block 7. The two limiting plates 13 are installed on the upper end of the supporting ring 11. The limiting plates 13 are away from the movable block 7 and are opposite to each other. The clamping groove 14 is penetrated on one side of the limiting plate 13. The limiting plate 13 can be inserted into the limiting groove 16 and the blocking column 17 can be inserted into the clamping groove 14 to block.

[0028] The auxiliary groove 4 is opened at the bottom of the combined part 2. The auxiliary groove 4 is concentric with the installation groove 3 and is communicated. The auxiliary groove 4 can assist the taper head 1 to be inserted into the installation groove 3, so that the drilling assembly is conveniently installed.

[0029] The buffer pad 12 is installed at one side of the positioning column 8 of the fixed plate 9. When the movable block 7 is pushed by the first spring 10 and hits the fixed plate 9 at the lower end, the buffer pad 12 can be buffered, so that the damage to the structure is reduced and the service life is increased.

[0030] In the use process, when the taper head 1 is broken in the working process, because the exposed taper head 1 is less at this time, the staff cannot be smoothly taken out. The first spring 10 installed at the upper end of the movable block 7 can be used. The power generated by the rebound of the first spring 10 pushes the movable block 7 to quickly fall downward. At the same time, the positioning column 8 ensures that the movable block 7 will not be deviated. The impact rod 6 fixedly connected with the movable block 7 will be driven downward by the movable block 7 and hit the upper surface of the taper head 1, so that the taper head 1 is hit out of the installation groove 3. When the movable block 7 hits the fixed plate 9 installed at the lower end, the buffer pad 12 installed at the upper end of the fixed plate 9 is contacted first. The buffer pad 12 has a buffering effect on the movable block 7, so that the movable block 7 is prevented from colliding with the fixed plate 9 under the great pushing force of the first spring 10, and the service life of the device is reduced.

[0031] Embodiment 2

[0032] Reference Figures 1-4For the second embodiment of the utility model, this embodiment is different from the first embodiment: the upper end of the combination 2 is provided with a mounting shell 15, two limiting grooves 16 are formed in the upper end of the mounting shell 15, the limiting grooves 16 and the limiting plate 13 at the upper end of the supporting ring 11 are aligned with each other, the limiting plate 13 can be inserted into the limiting grooves 16, the inner side walls of the two limiting grooves 16 are both provided with a moving groove, a blocking column 17 is movably connected in the moving groove, the blocking column 17 can be pushed out of the moving groove and inserted into the clamping groove 14, one end of the blocking column 17 away from the limiting groove 16 is provided with an inclined block 19, one side of the inclined block 19 is an inclined edge and is smooth, one end of the inclined block 19 away from the blocking column 17 is provided with a driving top block 20, the two sides of the driving top block 20 are smooth inclined edges and can be attached to the inclined edges of the inclined block 19, and the side of the inclined block 19 away from the inclined edge is a narrow edge rectangle.

[0033] The side of the inclined block 19 away from the driving top block 20 is provided with a second spring 18, the second spring 18 is sleeved on the blocking column 17, one end of the second spring 18 away from the inclined block 19 is in contact with the inner wall of the mounting shell 15, the second spring 18 can apply a pushing force to the inclined block 19 in the direction close to the driving top block 20, and the inclined block 19 and the blocking column 17 are pushed to the side away from the limiting plate 13.

[0034] The upper end of the driving top block 20 is provided with a pushing block 21, the pushing block 21 penetrates through the upper end of the mounting shell 15, the upper end of the pushing block 21 is provided with anti-skid lines, the upper end of the pushing block 21 can be contacted by the staff to push the mounting shell 15 to move, the pushing block 21 is fixedly connected with the driving top block 20, and the driving top block 20 also moves when the mounting shell 15 is pushed.

[0035] In use, the supporting ring 11 is first pushed to the uppermost position, so that the limiting plate 13 enters the inside of the limiting groove 16 and the clamping groove 14 is flush with the moving groove in the inside of the mounting shell 15, then the staff pushes the pushing block 21 to move inward, at this time, the inclined edges on the two sides of the driving top block 20 contact the inclined edges on the two sides of the inclined block 19, so that the inclined block 19 expands to the two sides, the inclined block 19 drives the blocking column 17 to move to the side of the limiting plate 13, finally the blocking column 17 is pushed into the clamping groove 14, at this time, the limiting plate 13 cannot fall, and the supporting ring 11 fixedly connected with the lower end of the limiting plate 13 cannot fall, so that the impact rod 6 in the movable groove 5 is fixed at the top of the inner cavity of the movable groove 5, preventing the first spring 10 from pushing the impact rod 6 to impact the upper end of the conical head 1, and playing a role of fixing the impact mechanism.

[0036] The remaining structure is the same as that of the first embodiment.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A composite tap, comprising a tap head (1), wherein an assembly (2) is provided at the upper end of the tap head (1), and an installation groove (3) is provided at the bottom of the assembly (2) for convenient insertion of the tap head (1), characterized in that: The assembly (2) has movable slots (5) through which it communicates with the mounting slot (3) on both sides. The assembly (2) has a slidably connected striking rod (6) that can strike the cone (1). Both ends of the striking rod (6) are fixedly installed with movable blocks (7). Both ends of the assembly (2) are fixedly installed with fixing plates (9). A positioning post (8) that slides through the movable block (7) is installed between the two corresponding fixing plates (9) on the top and bottom of the assembly (2). A first spring (10) is installed on the positioning post (8) between the movable block (7) and the fixing plate (9). A support ring (11) that is fitted on the assembly (2) is fixedly connected to one side of the movable block (7).

2. The combined tap according to claim 1, characterized in that: The bottom of the assembly (2) is provided with an auxiliary groove (4), which is connected to the mounting groove (3). The fixing plate (9) is provided with a buffer pad (12) on one side of the positioning post (8).

3. A combined tap according to claim 1, characterized in that: The assembly (2) is fitted with a mounting shell (15) at its upper end. A limiting groove (16) is provided at the upper end of the mounting shell (15). A moving groove is provided on the inner side wall of the limiting groove (16). A stop post (17) is movably connected in the moving groove. An inclined block (19) is installed at the end of the stop post (17) away from the limiting groove (16). A driving top block (20) is provided at the end of the inclined block (19) away from the stop post (17).

4. A combined tap according to claim 1, characterized in that: The upper end of the support ring (11) is equipped with a limiting plate (13), and a slot (14) is provided through one side of the limiting plate (13). The limiting plate (13) can be inserted into the limiting slot (16) and connected with the stop post (17).

5. A combined tap according to claim 3, characterized in that: A second spring (18) is provided on the side of the inclined block (19) away from the drive top block (20), and the second spring (18) is fitted on the stop post (17).

6. A combined tap according to claim 3, characterized in that: A pusher (21) is installed on the upper end of the drive top block (20), and the pusher (21) penetrates the upper end of the mounting shell (15).

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