Swivel head base machine tool clamp

Abstract

This utility model discloses a machining fixture for a rotary head base, including a base, cylinder seats, a telescopic cylinder, side pressure blocks, an upper pressure block, a guide seat, and a centering positioning block. Two cylinder seats are fixedly installed on the left and right sides of the base, and the guide seat is fixedly installed on the front side of the base. The side pressure blocks are provided with V-shaped positioning jaws. First screws are fixedly installed on the left and right sides of the base, and the upper pressure block has an elongated hole. When clamping and fixing the rotary head base, the machine tool fixture uses the arc-shaped surface structure of the centering positioning block to center and position it on the inner wall of the main channel of the rotary head base. This avoids the problem of cracking of the hexagonal blind hole structure or deformation of the positioning pin of the hexagonal column structure due to offset of the rotary head base when the side pressure blocks are clamping and fixing it. Furthermore, the V-shaped positioning jaws of the side pressure blocks firmly clamp the rotary head base, improving the stability of the rotary head base during turning operations, thereby improving machining accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of machining technology, and in particular relates to a rotary head base machining fixture. Background Technology

[0002] The rotating head base is rotatably mounted on the sweeper, and the spray nozzle is screwed onto the rotating head base to spray water during floor cleaning. After the rotating head base is cast, its threaded holes need to be machined for the installation of the spray nozzles. To improve the accuracy of the machining of the threaded holes of the rotating head base and to avoid damage to the outer surface of the rotating head base, corresponding machining fixtures are required. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a rotary head base machining fixture with fast clamping speed and high positioning accuracy.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a rotary head base machining fixture, comprising a base, a cylinder seat, a telescopic cylinder, a side pressure block, an upper pressure block, a guide seat, and a centering positioning block. Two cylinder seats are fixedly installed on the left and right sides of the base, and the guide seat is fixedly installed on the front side of the base. The piston rod of the telescopic cylinder is fixedly connected to the side pressure block. The side pressure block is provided with a V-shaped positioning clamp. A first screw is fixedly installed on the left and right sides of the base. The upper pressure block has an elongated hole. The upper pressure block is slidably mounted on the first screw through its elongated hole. A first spring is sleeved on the first screw. The upper and lower ends of the first spring act on the upper pressure block and the base, respectively. A first threaded sleeve is fixedly sleeved on the top of the first screw to limit the upward movement limit position of the upper pressure block.

[0005] A second screw is fixedly installed on the guide seat. The rear end of the centering positioning block is slidably sleeved on the second screw. A second screw sleeve is fixedly sleeved on the top of the second screw to limit the upward movement limit of the centering positioning block. A second spring is sleeved on the second screw. The upper and lower ends of the second spring act on the guide seat and the centering positioning block respectively. The two sides of the centering positioning block are set with a circular arc surface structure.

[0006] Preferably, a limiting post is also fixedly installed on the base, and a limiting groove is provided on the bottom surface of the upper pressure block, with the upper end of the limiting post located in the limiting groove.

[0007] Preferably, a guide rod is fixedly installed on the cylinder seat, and a U-shaped groove is provided on the top of the side pressure block, with the outer end of the guide rod slidingly placed in the U-shaped groove.

[0008] Preferably, a third guide post is fixedly installed on the guide seat, and a central positioning block is slidably sleeved on the third guide post.

[0009] Preferably, a hexagonal positioning post and a positioning pin are fixedly installed on the bottom surface of the base.

[0010] Compared with the prior art, the advantages of this utility model are as follows: When the machine tool fixture clamps and fixes the rotary head base, the arc surface structure of the centering positioning block acts on the inner wall of the main channel of the rotary head base for centering and positioning. This avoids the problem of cracking of the hexagonal blind hole structure or deformation of the positioning pin of the hexagonal column structure caused by the offset of the rotary head base when the side pressure block is pressed and fixed. In addition, the V-shaped positioning jaw of the side pressure block firmly clamps the rotary head base, improving the stability of the rotary head base during turning operations, thereby improving the machining accuracy. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] Figure 1 This is a perspective view of the front side of the base with the rotating head clamped in this utility model.

[0013] Figure 2 This is a perspective view of the rear side of the base with the rotating head clamped in this utility model.

[0014] Figure 3 This is a front view of the utility model with a rotating head base mounted on it.

[0015] Figure 4 This is a perspective view of the present invention.

[0016] Figure 5 This is the front view of this utility model. Detailed Implementation

[0017] The present invention will now be described in detail with reference to specific embodiments:

[0018] like Figures 1 to 5 The rotary head base machining fixture shown includes a base 1, a cylinder seat 2, a telescopic cylinder 21, a side pressure block 3, an upper pressure block 4, a guide seat 5, and a centering positioning block 53. The two cylinder seats 2 are fixedly installed on the left and right sides of the base 1, and the guide seat 5 is fixedly installed on the front side of the base 1. The piston rod of the telescopic cylinder 2 is fixedly connected to the side pressure block 3. The side pressure block 3 is provided with a V-shaped positioning clamp 31. The left and right sides of the base 1 are fixedly installed with first screws 42. The upper pressure block 4 has an elongated hole 40. The upper pressure block 4 is slidably sleeved on the first screw 42 through its elongated hole 40. The first screw 42 is sleeved on the first screw 42. The upper and lower ends of the first spring 45 act on the upper pressure block 4 and the base 1, respectively. The top of the first screw 42 is fixedly sleeved with a first screw sleeve 43 that limits the upward movement limit position of the upper pressure block 4.

[0019] A second screw 54 is fixedly installed on the guide seat 5. The rear end of the centering positioning block 53 is slidably sleeved on the second screw 54. A second screw sleeve 52 is fixedly sleeved on the top of the second screw 54 to limit the upward movement limit position of the centering positioning block 53. A second spring 56 is sleeved on the second screw 54. The upper and lower ends of the second spring 56 act on the guide seat 5 and the centering positioning block 53 respectively. The two sides of the centering positioning block 53 are set as arc surface structures 531.

[0020] A limit post 41 is also fixedly installed on the base 1, and a limit groove 44 is provided on the bottom surface of the upper pressure block 4. The upper end of the limit post 41 is located in the limit groove 44 to prevent the upper pressure block 4 from rotating.

[0021] A guide rod 22 is fixedly installed on the cylinder seat 2, and a U-shaped groove 32 is provided on the top of the side pressure block 3. The guide rod 22 is slidably placed in the U-shaped groove 32 to prevent the side pressure block 3 from rotating and to improve the straightness of the side pressure block 3 when it moves left and right.

[0022] A third guide post 55 is fixedly installed on the guide seat 5, and a centering positioning block 53 is slidably installed on the third guide post 55. The rotation of the centering positioning block 53 can be prevented by the third guide post 55 and the second screw 54.

[0023] A hexagonal positioning post 11 is fixedly installed on the bottom surface of the base 1. A base plate is fixedly installed on the machining table of the machining center. The base plate is provided with a hexagonal positioning hole and a positioning pin 12 that cooperate with the hexagonal positioning post 11. The positioning pin 12 is a hexagonal prism structure. The base 1 is fixedly installed on the base plate and is positioned by the hexagonal positioning post 11 cooperating with the hexagonal positioning hole. The rotating head base 6 is pre-reserved with a hexagonal blind hole structure that cooperates with the positioning pin 12 during casting. The hexagonal blind hole structure cooperates with the positioning pin 12 of the hexagonal prism structure to improve the accuracy of the rotating head base 6 being clamped on this fixture.

[0024] First, loosen the first threaded sleeve 43 and the second threaded sleeve 52. Simultaneously, the piston rod of the telescopic cylinder 21 retracts, pulling the upper pressure block 4 outward through the elongated hole 40. The main channel of the rotating head base 6 is fitted onto the central positioning block 53, and the arc surface structure 531 of the central positioning block 53 fits against the inner wall of the main channel of the rotating head base 6, pushing the upper pressure block 4 inward. Tighten the second threaded sleeve 52, which is pressed against the bottom mounting plate of the rotating head base 6 by the upper pressure block 4, thus pressing and fixing it vertically. The piston rod of the telescopic cylinder 21 extends and acts on the arc surfaces on both sides of the rotating head base 6 through the V-shaped positioning clamp 31 of the side pressure block 3, clamping and fixing it horizontally and vertically. Finally, the first threaded sleeve 43, through the arc surface structure 531 of the central positioning block 53, acts on the inner wall of the main channel of the rotating head base 6, further limiting and fixing it. After clamping and fixing, the branch pipe 61 of the rotating head base 6 is machined with threaded holes.

Claims

1. A rotary head base machining fixture, characterized in that: The system includes a base (1), a cylinder seat (2), a telescopic cylinder (21), a side pressure block (3), an upper pressure block (4), a guide seat (5), and a centering positioning block (53). The two cylinder seats (2) are fixedly installed on the left and right sides of the base (1), and the guide seat (5) is fixedly installed on the front side of the base (1). The piston rod of the telescopic cylinder (21) is fixedly connected to the side pressure block (3). The side pressure block (3) is provided with a V-shaped positioning clamp (31). The first screw (42) is fixedly installed on the left and right sides of the base (1). The upper pressure block (4) has an elongated hole (40). The upper pressure block (4) is slidably sleeved on the first screw (42) through its elongated hole (40). The first screw (42) is sleeved on the first screw (42). The upper and lower ends of the first spring (45) act on the upper pressure block (4) and the base (1) respectively. The top of the first screw (42) is fixedly sleeved with a first screw sleeve (43) that limits the upward movement limit position of the upper pressure block (4). A second screw (54) is fixedly installed on the guide seat (5). The rear end of the centering positioning block (53) is slidably sleeved on the second screw (54). A second screw sleeve (52) is fixedly sleeved on the top of the second screw (54) to limit the upward movement limit position of the centering positioning block (53). A second spring (56) is sleeved on the second screw (54). The upper and lower ends of the second spring (56) act on the guide seat (5) and the centering positioning block (53) respectively. The two sides of the centering positioning block (53) are set as arc surface structures (531).

2. The rotary head base machining fixture according to claim 1, characterized in that: A limiting post (41) is also fixedly installed on the base (1), and a limiting groove (44) is provided on the bottom surface of the upper pressure block (4), with the upper end of the limiting post (41) located in the limiting groove (44).

3. The rotary head base machining fixture according to claim 1, characterized in that: A guide rod (22) is fixedly installed on the cylinder seat (2), and a U-shaped groove (32) is provided on the top of the side pressure block (3). The outer end of the guide rod (22) is slidably placed in the U-shaped groove (32).

4. The rotary head base machining fixture according to claim 1, characterized in that: A third guide post (55) is fixedly installed on the guide seat (5), and a central positioning block (53) is slidably fitted on the third guide post (55).

5. The rotary head base machining fixture according to claim 1, characterized in that: A hexagonal positioning post (11) and a positioning pin (12) are fixedly installed on the bottom surface of the base (1).

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