CN210452052U

CN210452052U - Automatic rotary indexing space inclined hole drilling clamp

Info

Publication number: CN210452052U
Application number: CN201920709447.4U
Authority: CN
Inventors: 苏佩; 杨帆; 张姣姣
Original assignee: Shannxi Diesel Engine Heavy Industry Co Ltd
Current assignee: Shannxi Diesel Engine Heavy Industry Co Ltd
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-05-05
Anticipated expiration: 2029-05-17

Abstract

The utility model belongs to the technical field of machining, and discloses an automatic rotary indexing space inclined hole drill clamp, which is provided with a pin pulling rod, wherein the front end of the pin pulling rod is provided with a pedal rod, and the tail end of the pin pulling rod is provided with a cam block structure which is contacted with a pin pulling device; the cylinder sleeve part is arranged through a spigot on the positioning disc, and the nonstandard end face bearing is formed by welding a supporting disc and an isolating ring at intervals; the supporting disk is installed respectively in the annular of graduated disk and angle bar base. The semi-automatic continuous operation of the actions of rotation, indexing, positioning and the like of the cylinder sleeve body during machining is realized by utilizing the working principle of the lever mechanism, the cam mechanism, the ratchet wheel and pawl mechanism, the rotary indexing mechanism, the spring resetting mechanism and the floating support mechanism, the problem of low production efficiency of the cylinder sleeve of the diesel engine is effectively solved, the labor and time cost are saved, and the semi-automatic continuous operation has certain universality, advancement and practicability and is worthy of popularization.

Description

Automatic rotary indexing space inclined hole drilling clamp

Technical Field

The utility model belongs to the technical field of machining, especially, relate to an automatic rotatory graduation space inclined hole drill anchor clamps.

Background

The cylinder sleeve part is one of eight key core parts of the diesel engine, and the cylinder sleeve has the functions of providing a stable combustion space for a fuel system of the diesel engine and guiding the piston connecting rod to continuously complete air inlet, compression, work application and exhaust strokes. The upper part of the cylinder sleeve is subjected to high-temperature and high-pressure instantaneous impact, and the thermal load is large. In order to effectively cool the high-temperature combustion part, cooling water holes are designed on the outer edge of the upper part of the cylinder sleeve. In order to increase the cooling and heat dissipation area, the center lines of the holes are generally designed to be spatial oblique lines, and the machining of the holes is troublesome.

The cylinder sleeve inclined hole drilling tool completes indexing positioning of each hole by manually rotating cylinder sleeve parts and manually plugging and unplugging positioning pins. Because the number of the drilled holes on each cylinder sleeve is up to 40, and each hole opening is also drilled with a vertical short hole, each cylinder sleeve needs to rotate and index on the drilling tool at least 80 times. If the time of each indexing is calculated according to the time of 1 minute, the time for indexing of each cylinder sleeve light is about one hour or two hours, which wastes time and labor, seriously restricts the production efficiency of the cylinder sleeve, and can not meet the requirement of the diesel engine spare part market orders in recent years. In summary, the problems of the prior art are as follows: the cylinder sleeve is drilled with a large number of holes, the time consumption of machining is large, and the working efficiency is low.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides an automatic rotary indexing space inclined hole drill clamp.

The utility model is realized in such a way that an automatic rotary indexing space inclined hole drill clamp is provided with a pin pulling rod, the front end of the pin pulling rod is provided with a pedal rod, the tail end of the pin pulling rod is provided with a cam block structure, and the cam block structure is contacted with a pin pulling device;

the cylinder sleeve parts are installed through the rabbets on the positioning plates,

the nonstandard end face bearing is formed by welding a supporting disk and an isolation ring at intervals;

and the supporting disc is respectively arranged in the ring grooves of the dividing disc and the angle iron base.

Furthermore, the index plate is positioned and pressed by three evenly distributed stop blocks.

Furthermore, a pull spring is welded at the root of a rotating shaft sleeve of the nonstandard end face bearing, and a pressure spring is arranged at the middle part of the positioning pin

In summary, the advantages and positive effects of the invention are:

the utility model discloses comprehensive utilization lever mechanism, cam mechanism, ratchet pawl mechanism, rotatory indexing mechanism, spring return mechanism, the theory of operation of the supporting mechanism that floats, realized adding the semi-automatic serialization of actions such as the rotation of the cylinder block body, graduation, location man-hour, effectively solved the problem that diesel engine cylinder liner production efficiency is not high, saved manpower and time cost, had certain commonality, advance and practicality, be worth promoting.

Drawings

Fig. 1 is a schematic structural view of an automatic rotary indexing space inclined hole drill clamp provided by an embodiment of the present invention.

Fig. 2 is a top view of the inclined hole drill clamp provided by the embodiment of the present invention.

Fig. 3 is a left side view of the inclined hole drill clamp provided by the embodiment of the present invention.

Fig. 4 is a three-dimensional view of the inclined hole drill clamp provided by the embodiment of the utility model.

In the figure: 1. an angle iron base; 2. a support disc; 3. steel balls; 4. an isolation ring; 5. a turntable; 6. positioning a plate; 7. a ratchet wheel; 8. a deflector rod; 9. a steering shaft; 10. a pull rod; 11. a pawl; 12. a support shaft; 13. a stopper; 14. positioning pins; 15. a pressure spring; 16. a pin puller; 17. pulling the pin rod; 18. rotating the rotating shaft; 19. drilling a template; 20. pressing a plate; 21. a nut; 21. a roller lever; 22. and (4) a bracket.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.

The automatic rotary indexing space inclined hole drilling clamp improves the design structure of the original inclined hole drilling clamp, controls three dynamic cam jacking mechanisms of a positioning pin pulling-out mechanism, a cylinder sleeve rotating mechanism and a positioning pin inserting mechanism into continuous action, and enables the cylinder sleeve to realize quick indexing positioning, thereby greatly improving the cylinder sleeve drilling production efficiency and reducing the labor intensity.

The cylinder sleeve part to be processed is positioned through a spigot on the positioning disc 6 and is fixed on the fixture body through the pull rod 10, the pressure plate 20 and the nut 21. The space angle of the cylinder sleeve part to be drilled is provided by the angle iron base, so that the central line of the hole to be drilled after the cylinder sleeve part is installed is ensured to be in the vertical direction, and the drilling processing of the rocker arm drill is facilitated. The downward treading force of an operator on the rotating shaft sleeve is used as a power source for the indexing rotation of the cylinder sleeve, and the reciprocating swing of the shifting lever is converted into the periodic circumferential rotation of the cylinder sleeve by utilizing the ratchet wheel and pawl mechanism to be matched with the circumferential indexing device.

The pin pulling rod is designed to be V-shaped, one end of the pin pulling rod is provided with a pedal rod (namely a rotating shaft rotating sleeve), and the end surface of the other end of the pin pulling rod is provided with a cam block structure which is contacted with the pin pulling device. When the pin pulling rod rotates for a certain angle, the rising molded line of the end face cam block guides the roller of the pin pulling device to force the pin pulling device to automatically pull out the positioning pin inserted into the index plate. As the pin pulling rod continues to rotate, the pawl drives the ratchet wheel to act, and the cylinder sleeve body fixed on the rotary table starts to rotate. After the indexing disc synchronously rotating with the rotary disc rotates to a proper angle, the inserted pin is automatically inserted into the indexing hole under the action of the compression force of the spring, and the indexing rotation is completed. At this time, the pin pulling rod also reaches the limit position (limit pin). With the operator canceling the driving force, the pin pulling rod returns to the initial position under the action of the pull spring, and one working cycle is completed.

In order to ensure that a part can rotate flexibly and freely, the inclined hole drilling clamp is designed and manufactured with a non-standard end face bearing and consists of a supporting disk and an isolating ring which are spaced by a group of 80 standard part steel balls. The steel balls roll in the hardened supporting disk arc groove. Two supporting disks are respectively arranged in the ring grooves of the dividing disk and the angle iron base. The index plate is positioned and pressed by three evenly distributed stop blocks, so that the index plate can be ensured to be in close contact with the inclined plane of the angle iron through the steel balls, and can freely rotate under the bearing working state after the cylinder sleeve part is installed.

The drill plate is of a movable structure, and the hinged pin stud can guide the support to move back and forth along the kidney-shaped groove. In order to avoid the spatial position interference during the installation and the disassembly of the cylinder sleeve part, the drill plate can be retracted, the drill plate can be rapidly moved and positioned to a correct position after the cylinder sleeve part is installed in place, and the drill plate can be drilled by screwing the nut to fix the drill plate.

The original manual driving rotation is changed into the driving by stepping on a lever, so that the labor intensity of operators is greatly reduced. The cam block and the lever are linked to complete automatic plugging and pulling and indexing rotation of the positioning pin, so that the auxiliary working time is shortened, and the labor productivity is improved. The root of the rotating shaft sleeve is additionally provided with a pull spring so as to realize that the pin pulling rod can automatically reset under the action of the spring force after completing indexing rotation. The middle part of the positioning pin is provided with a compression spring, and after the pin puller finishes the pin pulling action, the spring force enables the positioning pin to be inserted into the next positioning hole in due time, the circumferential freedom degree of the cylinder sleeve is locked, and the preparation is made for drilling.

The pin puller roller mechanism is provided with an automatic force-releasing failure mechanism, when the roller reaches the highest point and enters the descending section of the bump molded line, the force is released instantly, and the movement of the positioning pin is not limited any more just after the positioning pin is pulled out, so that the positioning pin can automatically find the positioning hole and can be inserted in time. The torsion spring arranged on the roller lever can help the force releasing mechanism to reset in time.

The cylinder liner part adopts terminal surface and tang location, and most are unsettled can receive the action of gravity and flagging on the frock, influence the position degree of accuracy of frock drilling, the utility model discloses the excircle of giving the cylinder liner has been equipped with a spring roller auxiliary stay mechanism. The mechanism utilizes the floating auxiliary support of the spring group and the contact support principle of the roller, so that the cylinder sleeve is more firmly clamped in the clamp body, the positioning is more accurate, and the drilling precision is improved.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.

Claims

1. The automatic rotary indexing space inclined hole drilling clamp is characterized by being provided with a pin pulling rod, the front end of the pin pulling rod is provided with a pedal rod, the tail end of the pin pulling rod is provided with a cam block structure, and the cam block structure is in contact with a pin puller;

2. The automatic rotary indexing space inclined-hole drill clamp as claimed in claim 1, wherein the indexing disc is positioned and pressed by three evenly distributed stoppers.

3. The automatic rotary indexing space inclined hole drill clamp as claimed in claim 1, wherein a tension spring is welded at the root of a rotating shaft sleeve of the non-standard end face bearing, and a compression spring is arranged at the middle part of the positioning pin.