CN203509994U - Small-hole locating and clamping device - Google Patents

Abstract

The utility model discloses a small hole positioning and clamping device, which comprises a base plate, a positioning pin seat, a guide base, a clamping handle, a connecting mechanism and a guide rod. The positioning pin seat is located at the front end of the base plate, and the positioning pin seat and the guide base The clamping handle is hinged to the rear end of the guide base, and the positioning pin seat and the guide base are provided with a shaft hole whose center line coincides with each other; the positioning pin seat is provided with a positioning pin. The positioning pin is a hollow pin shaft and the front end face is axially provided with a through groove, and a matching clamping hook is provided inside the positioning pin, and the rear end of the clamping hook is connected with the front end of the connecting mechanism; the guide rod is arranged on the guide base On, the front end of the guide rod is connected with the rear end of the connecting mechanism, and the rear end of the guide rod is connected with the clamping handle. This structure solves the problem that the positioning of the small hole is not integrated with the clamping structure and the clamping force is insufficient, and the operability is stable and reliable, which can effectively meet the requirements of the small hole clamping force.

Description

A small hole positioning and clamping device

technical field

The utility model relates to the technical field of clamping and positioning devices, in particular to a positioning and clamping device for small holes.

Background technique

In the production line of the automobile manufacturing industry, during the inspection or assembly and welding of parts, it is usually necessary to pre-position and clamp the body parts. Among them, the positioning and clamping devices of body parts with small holes (such as rear frame, floor assembly, underbody assembly, etc.) are often not ideal in terms of structural design. Some small-hole clamping devices scale down the large-hole clamping devices. Due to the complex structure design of such devices, the clamping arm is too thin and the clamping force is insufficient, and because there is no positioning device, it may It leads to jamming phenomenon, which affects product quality and even leads to overturning and safety accidents during production.

The publication number is CN1683113A, and the patent document published on October 19, 2005 discloses a positioning and clamping device, which includes a hollow column member, a slit, a clamping arm, a driving mechanism and a protective structure. The positioning pin is attached to the hollow column member such that one slit of the positioning pin communicates with the inside of the column member. The clamping arm is received axially movably in the slot and has a hook-shaped head exposed toward the upper portion of the slot and a bottom exposed toward the interior of the column member. A drive structure is mounted inside the column member for axially moving the clamping arm between said clamped and unclamped positions. The guard structure isolates the interior of the column member from the interior of the slot while allowing axial movement of the clamping arm within the slot. The design of the device is complex in structure, and the injection and discharge of compressed air into and out of the corresponding chambers are used as the driving power source to drive the hook-shaped head of the clamping arm to perform clamping operations. This driving method has complex structure, high production cost, cumbersome operation, and great difficulty in maintenance and management.

Utility model content

The purpose of this utility model is to solve the problem that the positioning and clamping structure of the body parts with small holes are not integrated, and the clamping force is insufficient. Managed small hole positioning clamping device.

The utility model enables the purpose to be realized through the following technical solutions.

A small hole positioning and clamping device, including a base plate, a positioning pin seat, a guide base, a clamping handle, a connecting mechanism and a guide rod, the positioning pin seat is located at the front end of the base plate, and the positioning pin seat and the guide base are opposite and arranged at intervals On the base plate, the clamping handle can be hinged back and forth to the rear end of the guide base, and the positioning pin seat and the guide base are provided with a shaft hole whose center line coincides; the positioning pin seat is provided with a positioning pin, and the positioning pin is hollow. The pin shaft and the front end face are axially provided with a through groove, and the positioning pin is provided with a matching clamping hook. The rear end of the clamping hook is connected with the front end of the connecting mechanism; the guide rod is arranged on the guide base, and the guide rod The front end is connected with the rear end of the connecting mechanism, and the rear end of the guide rod is connected with the clamping handle. The structure is compact and reasonable, and the clamping force is enhanced. In actual use, the positioning operation is performed in advance through the positioning pin, and then the guide rod and the connecting mechanism are driven to move axially by tightening or loosening the clamping handle, so as to control the clamping hook to implement the clamping action. The device has the functions of positioning and clamping at the same time, and has good operability, obvious clamping effect and strong practicability.

Preferably, the rear end of the positioning pin is fixedly connected to the positioning pin seat, and the positioning pin and the positioning pin seat are interference fit. The structure is firm and durable, and the processing technology is simple.

As another connection structure between the positioning pin and the positioning pin seat, the rear end of the positioning pin is fixed on the positioning pin seat through bolts, and the positioning pin and the positioning pin seat are clearance fit. The structure can replace the positioning pin according to actual needs, thereby improving the use efficiency and reducing the production cost.

Preferably, the front end of the positioning pin is provided with an annular flange. This flange can be used as a positioning datum to support the clamping force.

As a preference, the middle part of the clamping hook is provided with an axially inclined guide groove, the guide groove is provided with a limit pin, the limit pin passes through the positioning pin and is radially fixed on the positioning pin seat, and the rear end of the clamping hook is provided with There is a first through hole. This structure enables the clamping hook to implement the clamping action according to the groove position stroke of the guide groove. When the clamping handle is in a loose state, the hook head of the clamping hook is built into the through groove at the front end of the positioning pin. When the clamping handle is tensioned, the hook head of the clamping hook protrudes out of the through groove at the front end of the positioning pin, and hooks the peripheral part of the small hole to implement the clamping force.

Preferably, the connecting mechanism includes a stud and a U-shaped connecting fork, one end of the stud is screwed to the closed side of the U-shaped connecting fork, and the open side of the U-shaped connecting fork is fixed by a bolt. Connect to the first through hole. The clamping hook can be firmly connected through the U-shaped connecting fork to ensure that there is no radial deviation during axial linkage.

As a preference, a screw hole is axially provided on the front end surface of the guide rod, the other end of the double-ended stud is screwed into the screw hole on the guide rod, and a second screw hole is arranged radially on the rear end of the guide rod. through hole. Through the connection of internal and external threads, the axial movement is stable and reliable.

Preferably, the clamping handle is Z-shaped, the middle part of the clamping handle is provided with a third through hole, the clamping handle is connected with the guide rod through a U-shaped bolt, the closed side of the U-shaped bolt is hinged to the second through-hole, and the U-shaped bolt The opening side of the pin is fixedly connected to the third through hole. Through the U-bolt connection, the flexibility of the clamping handle is enhanced, which is conducive to forward and backward rotation. Through the setting of the Z-shaped clamping handle, when the clamping handle is in the tensioned state, the bottom surface of the clamping handle is close to the base plate. Since the pre-designed Z-shaped body size and hole position cooperate with each other, it is just to ensure that the first The center lines of the first through hole, the second through hole and the third through hole are in the same horizontal plane, and the positioning pins, studs, U-shaped connecting forks, guide rods and U-shaped bolts are all kept in a horizontal state.

The beneficial effects of the utility model are: the structure is compact and reasonable, and it is easy to manufacture. Easy to operate, easy to maintain and manage daily. At the same time, it has the functions of positioning and clamping, which can effectively meet the requirements of small hole clamping force. The operability is stable and reliable, which is conducive to improving the efficiency of use and reducing labor costs.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the sectional structural representation of the natural state of the utility model;

Fig. 3 is a schematic cross-sectional structure diagram of the clamping state of the present invention.

In the figure: 1-base plate, 2-locating pin seat, 3-guiding base, 4-locating pin, 5-clamping hook, 6-guiding groove, 7-limiting pin, 8-first through hole, 9- Clamping handle, 10-connection mechanism, 11-guide rod, 12-the second through hole, 13-the third through hole.

Detailed ways

Below, the utility model is described in detail through the embodiments in conjunction with the accompanying drawings.

Example 1

As shown in Figure 1, Figure 2 and Figure 3, a small hole positioning and clamping device of the present invention includes a base plate 1, a positioning pin seat 2, a guide base 3, a clamping handle 9, a connecting mechanism 10 and a guide rod 11. The positioning pin seat 2 is located at the front end of the base plate 1, and the positioning pin seat 2 and the guide base 3 are opposite and arranged on the base plate 1 at intervals. A shaft hole coincident with the center line is provided on the guide base 3 . Locating pin 4 is provided with locating pin seat 2, and locating pin 4 is the pin shaft of hollow and front end end face axially is provided with through groove, and the rear end of locating pin 4 is affixed on the locating pin seat 2, and locating pin 4 and locating pin Seat 2 is an interference fit. The positioning pin 4 is provided with a matching clamping hook 5, and the middle part of the clamping hook 5 is provided with an axially inclined guide groove 6. The guide groove 6 is provided with a limit pin 7, and the limit pin 7 passes through the positioning pin 4. It is radially fixed on the positioning pin seat 2 , and the rear end of the clamping hook 5 is provided with a first through hole 8 . The connecting mechanism 10 includes a stud and a U-shaped connecting fork, one end of the stud is screwed to the closed side of the U-shaped connecting fork, and the opening side of the U-shaped connecting fork is fixed to the second side by bolts. A through hole 8 . Guide rod 11 is arranged on the guide base 3, and the front end face of guide rod 11 is axially provided with screw hole, and the other end of described double-ended stud is connected in the described screw hole on the guide rod 11 by thread, guides The rear end of the rod 11 is radially provided with a second through hole 12 . The clamping handle 9 is Z-shaped, the middle part of the clamping handle 9 is provided with a third through hole 13, the clamping handle 9 is connected with the guide rod 11 through a U-shaped bolt, and the closed side of the U-shaped bolt is hinged to the second through-hole 12, The opening side of the U-bolt is fixedly connected to the third through hole 13 through the pin shaft.

Example 2

In Embodiment 2, as another embodiment of the present invention, the rear end of the positioning pin 4 is fixed on the positioning pin seat 2 through bolts, and the positioning pin 4 and the positioning pin seat 2 are clearance fit. The front end of the locating pin 4 is provided with an annular flange, and the end face of the annular flange is used as a positioning reference plane during positioning to support the clamping hook 5 to implement the clamping force. All the other structures are the same as in Example 1.

The working mode of the utility model is: in actual use, the locating pin goes deep into the small holes of parts such as the vehicle body, and the end face of the locating pin seat or the end face of the annular flange provided on the locating pin is used as the positioning reference plane, and the positioning is performed in advance. Positioning job. Then, by tightening the clamping handle, the bottom surface of the clamping handle is attached to the substrate. Since the pre-designed Z-shaped body size and hole position cooperate with each other, it is just guaranteed that the first through hole, the second through hole and the third through hole The center line of the hole is in the same horizontal plane, and the positioning pin, stud, U-shaped connecting fork, guide rod and U-shaped bolt are all kept horizontal; at the same time, the hook head of the clamping hook protrudes from the front end of the positioning pin Outside the through groove, hook the peripheral part of the small hole to implement the clamping force and clamp it on the positioning datum surface. When the clamping handle is loosened, the hook head of the clamping hook retracts in the through groove at the front end of the positioning pin, and the linkage parts are in a naturally loose connection state.

Claims (8)

1. an aperture positioning clamping device, comprise substrate (1), it is characterized in that: also comprise location key seat (2), guide base (3), clamping lever (9), bindiny mechanism (10) and guide post (11), location key seat (2) is positioned at the front end of substrate (1), location key seat (2) is relative with guide base (3) and be disposed on substrate (1), clamping lever (9) can before and after the movable rear end that is hinged on guide base (3), location key seat (2) and guide base (3) are provided with the axis hole of center line coincidence; Location key seat (2) is provided with alignment pin (4), alignment pin (4) is provided with groove for the bearing pin of hollow and front end end face axial, in alignment pin (4), be provided with the clamp hook (5) matching, the rear end of clamp hook (5) is connected with the front end of bindiny mechanism (10); It is upper that guide post (11) is located at guide base (3), and the front end of guide post (11) is connected with the rear end of bindiny mechanism (10), and the rear end of guide post (11) is connected with clamping lever (9).

2. aperture positioning clamping device according to claim 1, is characterized in that: it is upper that the rear end of alignment pin (4) is fixed in location key seat (2), and alignment pin (4) is interference fit with location key seat (2).

3. aperture positioning clamping device according to claim 1, is characterized in that: it is upper that the rear end of alignment pin (4) is fixed in location key seat (2) by bolt, and alignment pin (4) is matched in clearance with location key seat (2).

4. according to the aperture positioning clamping device described in claim 1 or 2 or 3, it is characterized in that: the front end of alignment pin (4) is provided with annular flange flange.

5. aperture positioning clamping device according to claim 1, it is characterized in that: the middle part of clamp hook (5) is provided with the gathering sill (6) of inclination vertically, gathering sill (6) is provided with spacer pin (7), it is upper that spacer pin (7) is radially fixed in location key seat (2) through alignment pin (4), and the rear end of clamp hook (5) is provided with the first through hole (8).

6. aperture positioning clamping device according to claim 5, it is characterized in that: bindiny mechanism (10) comprises studs and U-shaped yoke, one end of described studs is threaded connection the closed side at described U-shaped yoke, and the open side of described U-shaped yoke is by affixed the first through hole of bolt (8).

7. aperture positioning clamping device according to claim 6, it is characterized in that: on the front end end face of guide post (11), be axially arranged with screw, the other end of described studs is threaded connection in the described screw on guide post (11), and the rear end of guide post (11) is radially provided with the second through hole (12).

8. aperture positioning clamping device according to claim 7, it is characterized in that: clamping lever (9) is zigzag, the middle part of clamping lever (9) is provided with third through-hole (13), clamping lever (9) is connected with guide post (11) by U-bolt, hinged second through hole in closed side (12) of U-bolt, the open side of U-bolt is by the affixed third through-hole of bearing pin (13).

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