CN104647065B - Tooling special for turning multiple holes in four-return valve body - Google Patents

Abstract

The present invention relates to a kind of special turning tool for four-circuit valve body porous, which mainly includes a chassis, a turntable, a clamp body, a rotation positioning device and a rotation clamping device, the bottom includes a placing circular groove and a rotating circular groove; the turntable includes four rotating blocks; The rotary clamping device includes a cylinder, a pressure plate, a pressing block, and a hinge block; a slot is provided between the two rotating blocks; a positioning groove is provided on the upper surface of the chassis; the rotary positioning device includes a vertical plate, and a U-shaped groove is provided on the vertical plate. The vertical plate is welded with a spring seat, the positioning groove is placed with a bolt, the bolt is welded with a handle, and the bolt is connected with a spring; the clamp body includes a valve body positioning box, the valve body positioning box is hinged with a compression block, and the positioning box is equipped with a clamping cylinder. , Clamping cylinder two. Compared with the prior art, the present invention is easy to use, fast in positioning and saves manpower. In addition, the present invention enables the holes to be positioned more accurately, further reduces the position deviation of hole turning, and ensures the axes of the four holes. to parallelism.

Description

A Special Turning Tooling for Porous Four-Circuit Valve Body

technical field

The invention relates to machining tooling for auto parts, in particular to a special turning tooling with a porous four-circuit valve body.

Background technique

The four-circuit valve body is a method that divides the air circuit of the whole vehicle into four circuits that are both interconnected and independent of each other. When any circuit fails, it will not affect the normal operation and inflation of other circuits. Under normal circumstances, the four-circuit valve body is actually a five-way joint, and it only plays a protective role when a certain circuit breaks or leaks.

Generally speaking, when the four holes on the four-circuit valve body are processed, four sets of fixtures are often required to perform positioning, clamping and turning on each hole in turn. This method is very inconvenient to use, and the efficiency is relatively slow, and the axial parallelism of the four holes of the four-circuit valve body is relatively poor after processing, which affects the processing quality of the product.

Aiming at the defects of the existing porous turning tooling, a Chinese utility model patent CN203003548U discloses a high-efficiency and practical lathe fixture that can index lathe holes, which consists of a fixed plate, a clamp body, a T-shaped pressing plate, a pressing block, a latch spring, and a latch and locking screws. The clamp body is set in the clamp body transition hole and the clamp body positioning hole with an eccentric distance on the fixed plate. There are two indexing positioning holes symmetrical up and down in the clamp body transition hole, and the locking screw is clamped by the pressure block. The workpiece, the T-shaped pressing plate locking clamp body, the bolt and the indexing positioning hole cooperate to realize the indexing hole function. After turning and processing the air return hole of the thermal expansion valve body of the automobile air conditioner, just loosen the T-shaped pressure plate, pull out the pin, rotate the clamp body 180°, insert the pin into another indexing hole, and then tighten the T-shaped pressure plate, that is The intake hole of the valve body can be turned quickly.

In the above-mentioned patents, the method of clamping after eccentric rotation can indeed achieve porous turning with a pair of fixtures, and has a simple structure, simple structure, convenient operation, low manufacturing cost, and relatively improved production efficiency. But from an overall point of view, since the valve body workpiece that needs to be turned is only positioned and installed through the mounting hole, this rough positioning method is likely to cause the valve body to be deflected when the pressure block clamps the valve body. The specific location causes deviation. On the other hand, when turning the conversion hole, after the clamp body rotates at a certain angle, it is necessary for people to match the pin positioning hole on the clamp body with the index positioning hole on the fixed disc through subtle manual and visual powers. A pin can be inserted to connect the two holes, thereby completing the fixing of the clamp body. This positioning method takes a long time, and it will be very troublesome once there are too many holes to be turned.

Contents of the invention

Aiming at the defects of the above-mentioned technology, the present invention, on the basis of the eccentric rotation clamping function of the above-mentioned technology, further improves the machining accuracy of the hole position and speeds up the turning speed of the conversion hole, which is a kind of special turning for four-circuit valve body with multiple holes. tooling.

A special turning tool for four-circuit valve body with multiple holes, mainly including a chassis, a turntable, a clamp body, a rotary positioning device and a rotary clamping device. .

The turntable is installed inside the placing circular groove through a rolling bearing, and four rotating blocks corresponding to the rotating circular groove are evenly distributed on the round shaft end of the turntable.

The rotary clamping device includes two cylinders installed on the upper end surface of the chassis close to the edge of the circumferential line, the upper end of the cylinder is hinged with a pressure plate, and the lower surface of the pressure plate near the center of the turntable is fixed with a pressure block. A hinge block welded on the upper end of the chassis is hinged at the position between the joint with the cylinder and the joint with the briquetting block.

The above-mentioned method is the method used in the prior art to turn the hole through eccentric rotation clamping. When it is necessary to change the hole and turn the hole, it is only necessary to push the cylinder down to push the pressure plate down to press the pressure block from the original pressure on the surface of the turntable. The state is disengaged, and then manually rotate the turntable 90 degrees, and then push the cylinder down to push the pressure plate, so that the pressing block moves downward to press the turntable.

Slots are provided between the two adjacent rotating blocks.

The upper end surface of the chassis is provided with a positioning groove communicating with the rotating circular groove.

The rotary positioning device includes a vertical plate installed vertically on one side of the upper part of the positioning groove, the vertical plate is provided with a U-shaped groove, the upper end of the vertical plate is welded with a spring seat, and the positioning groove is vertically placed A bolt inserted into a slot, the side of the upper part of the bolt close to the position of the vertical plate is welded with a pull handle that can slide longitudinally in the U-shaped groove, and the upper end of the bolt is connected with a spring on the surface.

The above-mentioned device structure is one of the most important improvements of the present invention. It is mainly used for positioning during hole changing and turning. When in use, it is only necessary to manually pull the handle upwards, so that the lower part of the bolt is disengaged from the slot, and the entire bolt moves upwards to The spring is compressed. While pulling the handle, manually rotate the turntable slowly. When the turntable 2 rotates 90 degrees, under the action of the spring, the lower part of the pin will automatically snap into the corresponding slot on the turntable 2 under the spring force. . This positioning method is relatively faster and shortens the time for changing holes.

The clamp body includes a valve body positioning box fixedly installed in the center of the upper end surface of the turntable, a compression block is hinged at the center of one end wall of the valve body positioning box, and the positioning box is on the opposite side of the hinged part of the compression block. Clamping cylinder 1 and clamping cylinder 2 are oppositely installed at the outer end.

The above-mentioned device structure is the second most important improvement of the present invention, which is mainly reflected in that the pressing block cooperates with the clamping body to clamp the hole to be processed through the first cylinder and the second clamping cylinder, thereby ensuring the accurate positioning of the hole turning.

The distance between the centers of the two arcs of the U-shaped groove is equal to the depth of the groove. It is ensured that the bolt can accurately and effectively control the braking of the turntable.

The beneficial effects of the present invention are:

The present invention is based on the existing technology of multi-hole turning through eccentric rotation and clamping, and adopts a 90-degree spring every turn of the turntable to automatically press the pin into the slot to process and position a single hole. Compared with the prior art It is said that it is easy to use, fast in positioning and saves manpower. In addition, the way that the cylinder drives the pressing block and cooperates with the valve body positioning box to press each hole to be processed on the valve body will enable the hole to be positioned more accurately, further reducing the position deviation of the hole turning and ensuring 4 holes. Axial parallelism.

Description of drawings

The invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is a front view structural schematic diagram of the installation and connection mode of the chassis and the turntable of the present invention;

Fig. 3 is a partially enlarged schematic diagram of the present invention about II of Fig. 1;

Fig. 4 is the structural representation of chassis of the present invention;

Fig. 5 is a structural schematic diagram of the turntable and clamp body of the present invention;

Fig. 6 is a partially enlarged schematic diagram of the present invention with respect to Fig. 1 at I;

Fig. 7 is a schematic diagram of the working state of the present invention.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elaborated below.

As shown in Figure 1, a special turning tool for four-circuit valve body porous, mainly includes a chassis 1, a turntable 2, a clamp body 3, a rotary positioning device 4 and a rotary clamping device 5, as shown in Figure 4, the chassis 1 The center of the upper end surface is provided with a placing circular groove 1a and a rotating circular groove 1b sequentially from top to bottom.

As shown in FIG. 2 , the turntable 2 is installed inside the placement circular groove 1 a through rolling bearings. As shown in FIG. 5 , four rotating blocks 2 a corresponding to the rotating circular groove 1 b are evenly distributed on the round shaft end of the turntable 2 .

As shown in FIG. 3 , the rotary clamping device 5 includes two cylinders 51 installed on the upper end surface of the chassis 1 close to the edge of the circumferential line. A pressure block 54 is fixedly connected to the lower surface, and the pressure plate 52 is hinged with a hinge block 53 welded on the upper end of the chassis 1 at a position between the connection with the cylinder 51 and the connection with the pressure block 54 .

The above-mentioned method is the method used in the prior art to clamp and turn holes by eccentric rotation. When hole replacement and turning processing is required, it is only necessary to first push the cylinder 51 downwards to push the pressure plate 52 to compress the pressure block 54 from the original position on the turntable. 2, the state on the surface is separated, and then the turntable 2 is manually rotated 90 degrees, and then the cylinder 51 pushes the pressing plate 52 downward, so that the pressing block 54 moves downward to press the turntable 2.

As shown in FIG. 5 , slots 2 b are provided between the two adjacent rotating blocks 2 a.

As shown in Figure 4, the upper end surface of the chassis 1 is provided with a positioning groove 1c communicating with the rotating circular groove 1b.

As shown in Figure 6, the rotary positioning device 4 includes a vertical plate 42 installed vertically on the upper side of the positioning groove 1c, the vertical plate 42 is provided with a U-shaped groove 42a, and the upper end of the vertical plate 42 is welded with a Spring seat 43, the interior of described locating groove 1c is vertically placed with the latch 41 that inserts in the slot 2b, and described latch 41 top is welded on the side that can be in described U-shaped groove 42a near the side of described vertical plate 42 position. The pull handle 41 a slides longitudinally, and the upper end surface of the bolt 41 is connected with a spring 44 fixedly installed on the lower surface of the spring seat 43 .

The above-mentioned device structure is one of the most important improvements of the present invention. It is mainly used for positioning during hole changing and turning. When in use, it is only necessary to manually pull the handle 41a upwards, so that the lower part of the latch 41 is disengaged from the slot 2b, and the entire latch 41 moves upward to compress the spring 44, and while pulling the handle 41a, slowly rotate the turntable 2 manually, when the turntable 2 rotates 90 degrees, under the action of the spring 44, the lower part of the latch 41 will automatically engage under the elastic force of the spring 44 into the corresponding slot 2b on the turntable 2. This positioning method is relatively faster and shortens the time for changing holes.

As shown in Figure 5, the clamp body 3 includes a valve body positioning box 31 fixedly installed in the center of the upper end surface of the turntable 2, and a compression block 32 is hinged at the center of an end wall of the valve body positioning box 31, and the positioning Case 31 is oppositely installed with clamping cylinder one 33 and clamping cylinder two 34 at the opposite side outer ends of the hinged part with compression block 32 .

The structure of the above-mentioned device is the second most important improvement of the present invention, which is mainly reflected in that the hole to be processed is clamped by the clamping block 32 and the clamping body 3 through the cylinder one 33 and the clamping cylinder two 34, thereby ensuring the accurate positioning of the hole turning .

The distance between the centers of the two arcs of the U-shaped groove 42a is equal to the depth of the slot 2b. This ensures that the latch 41 can accurately and effectively control the braking of the turntable 2 .

Concrete working implementation mode of the present invention is:

When in use, as shown in Figure 7, first place the four-circuit valve body inside the valve body positioning box 31, turn the compression block 32 to the horizontal position, and the cylinder one 33 pushes the compression block 32 to clamp the hole located in the center of the chassis 1. tight, the hole can then be turned.

After finishing the turning of the first hole, retract the tool and stop the machine, and the cylinder 51 will be pushed down to push the pressing plate 52 to disengage the pressing block 54 from the original state of being pressed on the surface of the turntable 2 . At the same time, manually pull the handle 41a upward, causing the lower part of the latch 41 to disengage from the slot 2b. The entire latch 41 moves upward to compress the spring 44. While pulling the handle 41a, slowly rotate the turntable 2 manually. When the turntable 2 rotates 90 degrees, under the action of the spring 44 , the lower part of the latch 41 will automatically snap into the corresponding slot 2 b on the turntable 2 under the elastic force of the spring 44 . Then the rotating disk 2 is rotated 90 degrees manually, and the cylinder 51 pushes down the pressing plate 52, so that the briquetting block 54 moves downward to compress the rotating disk 2, and then the hole rotated to the center of the chassis 1 can be started.

Then, the turning process of the third hole and the fourth hole can be completed successively according to the above-mentioned method of turning the second hole.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and what are described in the above-mentioned embodiments and description are only the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention also has various Variations and improvements all fall within the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (2)

1. a kind of Special purpose turning frock of four loops valve body porous, mainly including chassis (1), rotating disk (2), clamp body (3), rotation Positioner (4) and rotating clamp (5), chassis (1) the upper surface center are sequentially provided with placement circular groove from top to bottom (1a), rotate circular groove (1b)；

The rotating disk (2) is arranged on by rolling bearing places circular groove (1a) inside, and rotating disk (2) the circular shaft end is evenly equipped with four The spill spin block (2a) corresponding with circular groove (1b) is rotated；

The rotating clamp (5) includes two cylinders (51) installed in chassis (1) upper surface near circumference edge, institute State cylinder (51) upper end and be hinged with pressing plate (52), the pressing plate (52) is fixed with the lower surface of rotating disk (2) center one end Briquetting (54), the pressing plate (52) are hinged with position in the junction of cylinder (51) and and the junction of briquetting (54) between It is welded on the hinged block (53) of chassis (1) upper end；

It is characterized in that：

Slot (2b) is equipped between two neighboring spill spin block (2a)；

Chassis (1) upper surface is provided with and rotates circular groove (1b) locating slot (1c) that communicates, locating slot (1c) section with Slot (2b) is adapted；

The rotary positioning apparatus (4) include the riser (42) for being vertically installed at locating slot (1c) top side, the riser (42) U-lag (42a) is provided with, riser (42) upper end is welded with spring base (43), perpendicular inside the locating slot (1c) The latch (41) being directly placed with one slot (2b) of insertion, side of latch (41) top near the riser (42) position Being welded with face can be in the pull handle (41a) of the interior longitudinal sliding motion of the U-lag (42a), and latch (41) upper surface is connected with solid Dingan County is mounted in the spring (44) on spring base (43) lower surface；

The clamp body (3) positions case (31), the valve body positioning including the valve body for being fixedly mounted on rotating disk (2) upper surface center The center of (31) end walls of case is hinged with compact heap (32), positioning case (31) with compact heap (32) hinged place To being provided with clamping cylinder one (33), clamping cylinder two (34) at the outer end of opposite flank.

2. the Special purpose turning frock of a kind of four loops valve body porous according to claim 1, it is characterised in that：The U-shaped Two center of arc's distance of groove (42a) and slot (2b) deep equality.