CN103671415B - Positioning device and method using same - Google Patents

Abstract

A positioning device and a method of using the positioning device, the positioning device is used for pressing and positioning a metal sheet on a mechanical component. The positioning device includes a cylindrical main shaft, an indenter located at the end of the main shaft, a stop part coaxial with the main shaft at a certain distance from the indenter, and a vertically movable sleeve on the main shaft and coaxial with the main shaft. Shaft positioning sleeve. The positioning sleeve forms a positioning space for accommodating the stopper and the pressure head, and the pressure head is provided with a magnetic element to attract the metal sheet into the positioning space, so that the metal sheet can be properly aligned before the pressing operation. This is beneficial to improve the pressing effect of the metal sheet and increase the production efficiency of the pressing operation.

Description

A positioning device and a method for using the positioning device

technical field

The present invention relates to a positioning device and a method of using the positioning device, in particular to a positioning device used in mechanical parts installed with metal sheets such as dust covers and a method of using the positioning device.

Background technique

In order to prevent dust or other sundries from entering the interior of the mechanical parts, a metal sheet is usually installed at one end of the opening of the mechanical parts. dust-proof.

For example, a transmission input shaft is usually installed inside the hub of an automobile clutch. In order to prevent dust from entering the interior of the hub and affecting the relative movement between the clutch and the transmission, a dust cover can be installed inside one end of the hub. As shown in Figure 1, the dust cover 2' is in the shape of a circular sheet, and the hub 3' of the automobile clutch is a hollow cylindrical structure and has a receiving space 31' near one end. Usually, an annular positioning cap 1' is placed above the hub 3', and a positioning space 11' is formed in the positioning cap 1'. The dust cover 2' is manually placed in the positioning space 11' of the positioning cap 1', and is then pressed by the positioning device to be accommodated in the accommodation space 31' of the hub 3', so as to achieve tight integration with the inside of the hub 3'. Since the size of the dustproof cover 2' is basically equivalent to the size inside the positioning cap 1', when the dustproof cover 2' is placed in the positioning space 11' of the positioning cap 1', the dustproof cover 2' may be tilted Therefore, it cannot be aligned with the receiving space 31' of the hub 3', which will affect the pressing effect and cause defective products.

In order to prevent the dust cover 2' from tilting, the commonly used method at present is that after the dust cover 2' is placed in the positioning space 11', the operator manually confirms whether the dust cover 2' is flat, and then uses the positioning device Suppression operation. Manual confirmation by the operator will reduce production efficiency and cannot ensure the accurate positioning of the dust cover 2'. Therefore, it is necessary to provide an improved positioning device and a method for using the positioning device to solve the above problems.

Contents of the invention

The problem solved by the present invention is to improve the positional pressing effect of metal sheets and to increase the production efficiency of the pressing operation.

In order to solve the above problems, the present invention provides a positioning device, which is used to locate a metal sheet on a mechanical component, the positioning device includes a cylindrical main shaft, a pressure head positioned at the end of the main shaft, and a pressure head at a distance of A stop part coaxial with the main shaft at a certain distance, and a positioning sleeve movably fitted on the main shaft in the vertical direction and coaxial with the main shaft, the positioning sleeve forms a positioning space for accommodating the stop part and the indenter, The pressure head is provided with a magnetic element to attract the metal sheet into the positioning space.

Compared with the prior art, the present invention has the following advantages: the magnetic element can absorb the metal sheet into the positioning space, so that the metal sheet has been accurately positioned in the positioning sleeve before pressing.

In order to solve the above problems, the present invention also provides a method of using the positioning device: first, the metal sheet is adsorbed on the indenter to realize positioning in the positioning space; secondly, the indenter moves downward to press the metal sheet on the At the same time, the positioning sleeve moves upwards away from the stopper; finally, the pressure head moves upwards away from the mechanical part, and the positioning sleeve automatically falls back and abuts against the stopper.

Compared with the prior art, the present invention has the following advantages: the metal sheet can ensure better alignment in the positioning space before the pressing operation, and the positioning sleeve can move up and down, which will improve the pressing effect of the metal sheet and increase the Productivity of pressing operations.

Description of drawings

Fig. 1 is the schematic diagram of positioning and pressing the metal sheet on the hub of the automobile clutch in the prior art;

Fig. 2 is a perspective view of the positioning device of the present invention;

Fig. 3 is a perspective view of the positioning device shown in Fig. 2 after the positioning sleeve is removed;

Fig. 4 is a cross-sectional view of the positioning device shown in Fig. 2 along line A-A;

5-1 to 5-5 are schematic diagrams of the method of using the positioning device of the present invention.

detailed description

As shown in Fig. 2, Fig. 3 and Fig. 4, positioning device 1 of the present invention is used for positioning a sheet metal on a mechanical component, in the present embodiment, this mechanical component is the wheel hub of an automobile clutch, and The metal sheet is a circular dust cover that closes one end of the hub. The positioning device 1 includes a cylindrical main shaft 11, an indenter 12 located at the end of the main shaft 11, a stopper 15 coaxial with the main shaft 11 at a certain distance from the indenter 12, and a positioning device that is movable on the main shaft and coaxial with the main shaft. Set of 14.

The main shaft 11, the pressure head 12 and the stopper 15 of the positioning device 1 are integrally formed, so they can ensure a good coaxiality and tolerance during the manufacturing process, which can also indirectly ensure that the dust cap is positioned properly. accuracy problem. The radial dimension of the stopper 15 is larger than that of the indenter 12 and the stopper 15 is at a certain distance from the indenter 12. This design is convenient for the indenter 12 to move downward when the dust cap is positioned. A circular accommodating groove 120 is concavely formed on the lower surface of the indenter 12 , and a circular magnetic element 13 is accommodated in the accommodating groove 120 and coaxial with the main shaft 11 . Of course, as long as the receiving groove and the main shaft are coaxial, the receiving groove can also be set in other shapes, such as square and hexagonal. It should be pointed out that the magnetic element 13 cannot protrude from the lower surface of the indenter 12 , because the protruding magnetic element 13 will affect the pressing effect of the indenter 12 .

The positioning sleeve 14 includes a circular top wall 141 , an annular side wall 143 extending downward from the top wall 141 , and a positioning space 140 surrounded by the top wall 141 and the side wall 143 . A circular through hole 142 is formed at the center of the top wall 141 , the diameter of which is slightly larger than the radial dimension of the main shaft 11 , so the main shaft 11 can pass through the through hole 142 and move up and down vertically relative to the positioning sleeve 14 . The radial size of the positioning space 140 is slightly greater than or equal to the outer diameter of the stopper 15 , that is to say, the two sizes are equivalent, so as to ensure the coaxiality of the positioning sleeve 14 with the main shaft 11 and the indenter 12 . The side wall 143 is provided with a continuous inclined wall 144 at one end away from the top wall 141. When the dustproof cap is installed, the inclined wall 144 can guide the dustproof cap into the positioning space 140. Therefore, the inclined wall 144 can also be used called the guide.

After the through hole 142 of the positioning sleeve 14 passes through the main shaft 11 and is set on the main shaft 11, the pressure head 12 and the stopper 15 are accommodated in the positioning space 140 in the positioning sleeve 14, and in the vertical direction, the pressure head 12 There is a certain distance between the lower surface and the guiding part 144 of the positioning sleeve 14 . In this way, when the dustproof cap enters the positioning space 140 through the guide part 144, due to the attraction of the magnetic element 13, the dustproof cap will move the distance along the inner wall of the side wall 143, so that the dustproof cap can better Adjust to the coaxial position with the main shaft 11, that is to say, the dust cap can achieve a good positioning before being pressed to the hub of the automobile clutch, which facilitates the subsequent pressing operation.

The method of using the positioning device 1 of the present invention is as follows: First, the dust cap (that is, the metal sheet) is adsorbed on the indenter and the positioning in the positioning space is realized. As shown in Figure 5-1, the positioning sleeve 14 is at the initial position When leaning against the stop part 15, the dust cap 2 is placed at the lower opening of the positioning space 140 of the positioning sleeve 14, and under the attraction of the magnetic element 13, the dust cap 2 enters the positioning space along the guide part 144 140, and move a certain distance along the inner wall of the side wall 143 until it is attracted to the indenter 12, so that the dust cap 2 can ensure a better alignment in the positioning space before pressing. The hub 3 of the automobile clutch is placed under the pressure head 12 , which includes a hollow structure 32 and a receiving space 31 at the top of the hollow structure 32 .

As shown in Figure 5-2, during the pressing process, the positioning cap 14 abuts against the top of the hub 3 of the automobile clutch, and then the pressure head 12 moves downward together with the dustproof cap 2. At this time, the stopper 15 and the positioning cap The top wall of 14 is separated. As shown in Figure 5-3, the pressure head 12 moves further downwards, and presses the dustproof cap 2 to be positioned in the accommodation space 31 at the top of the hub 3 of the automobile clutch. Move further up in the vertical direction. These two steps can be summarized as the pressure head moves down to press the dust cap on the hub (ie mechanical part) of the car clutch, while the positioning sleeve moves up away from the stopper.

As shown in Figure 5-4, after the pressing and positioning of the dust cap is completed, the pressure head 12 moves upward and breaks away from the accommodation space 31 of the hub 3 of the automobile clutch. Movement on one side. As shown in Fig. 5-5, the pressing head 12 continues to move upwards, and the positioning cap 14 naturally returns to the initial position under the action of gravity and abuts against the stopper 15. At this time, the positioning device is ready for the next pressing positioning. These two steps can be summarized as that the pressure head moves upward to disengage from the hub of the automobile clutch, and the positioning sleeve automatically falls back and abuts against the stopper.

In this way, a complete positioning and pressing process of the dust cover can be realized smoothly, because the dust cover can ensure a better alignment in the positioning space before pressing, and the positioning sleeve can move up and down, which will improve the pressing of the dust cover effect and increase the productivity of the pressing process. In addition, the dust cover has been accurately positioned when it is installed in the positioning space of the positioning cap, which avoids the need for manual confirmation before, which will reduce the labor intensity of workers and improve the yield of products.

While this invention has been described in terms of only certain exemplary embodiments, such description should be considered by way of illustration only, and not limitation. Various changes are possible within the scope described in the appended claims without departing from the spirit and scope of the invention.

Claims (10)

1. a kind of positioner, it is used for a sheet metal being positioned on a component of machine, and the positioner includes a circle The main shaft of column, the pressure head positioned at main shaft end, in stop section coaxial with main shaft at a certain distance from pressure head, and vertical The positioning sleeve coaxial on main shaft and with main shaft is actively set on direction, it is characterised in that：The positioning sleeve formation one is housed Stop section and the located space of pressure head, the pressure head is provided with a magnetic element with adsorbing metal piece to the located space.

2. positioner as claimed in claim 1, it is characterised in that：The radial dimension of the located space and the stop section Outside dimension it is suitable.

3. positioner as claimed in claim 1, it is characterised in that：The outside dimension of the pressure head is less than what the block was walked Outside dimension.

4. positioner as claimed in claim 1, it is characterised in that：The positioning sleeve include circular roof and from roof to The side wall of lower extension, the described one end of side wall away from roof is provided with inclined guidance part.

5. positioner as claimed in claim 4, it is characterised in that：In the vertical direction, the pressure head is apart from the guiding There is a segment distance in portion.

6. the positioner as any one of claim 1 to 5, it is characterised in that：The bottom of the pressure head forms one and justified Shape holding tank is to house the magnetic element.

7. positioner as claimed in claim 6, it is characterised in that：The magnetic element is in the holding tank and does not surpass Go out the bottom of the pressure head.

8. a kind of method using positioner as claimed in claim 1, it is characterised in that：First, sheet metal absorption is existed On pressure head and realize positioning in located space；Secondly, pressure head is moved down is compressed on the component of machine by sheet metal On, while positioning sleeve moves upwardly away from stop section；Finally, pressure head moves up the disengaging component of machine, the positioning Set automatic fall-back is simultaneously resisted against on stop section.

9. method as claimed in claim 8, it is characterised in that：The positioning sleeve is at the opening of located space provided with guiding Portion, the sheet metal enters in located space under the guide function of guidance part.

10. method as claimed in claim 9, it is characterised in that：In the vertical direction, the pressure head is apart from the guidance part one Set a distance, after the sheet metal enters in located space, can further be adjusted to same with the main shaft in the segment distance The position of axle.