CN214212334U

CN214212334U - Bearing cap bolt hole processing fixing device

Info

Publication number: CN214212334U
Application number: CN202023275469.6U
Authority: CN
Inventors: 李刚; 杨金美; 董志权; 杨小波; 李东原; 杨梦丽
Original assignee: Yunnan Yunnei Power Machinery Manufacturing Co ltd
Current assignee: Yunnan Yunnei Power Machinery Manufacturing Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-09-17
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a bearing cap bolt hole processing and fixing device, which comprises a positive pressure plate, a positive pressure rod, a support rod, a pin shaft, a support, a clamping oil cylinder and a clamp frame body, wherein the positive pressure plate is arranged at the rear end of the positive pressure rod and can rotate at a certain angle around the fixed pin shaft at the top end of the positive pressure rod, thereby facilitating feeding and discharging; the positive positioning block is arranged at the rear part of the clamp frame body, is opposite to the positive pressure plate and is provided with a hole for the drill bit to pass through; the side pressure plates with wedge-shaped pins are arranged at the top of the supporting frame body and are tangent to the wedge surfaces of the side pressure plates, and springs are arranged between the two side pressure plates; the side positioning block is arranged on the opposite surface of the side pressing plate and is vertical to the positive positioning block; the positioning assemblies consisting of the positive pressure rod, the positive pressure plate, the positive positioning block, the wedge-shaped side pressure rod, the side pressure plate and the side positioning block are arranged in the supporting frame body, so that a plurality of workpieces can be clamped simultaneously, the efficiency is improved, six degrees of freedom of the workpieces are limited, and the positioning is accurate and the clamping is reliable.

Description

Bearing cap bolt hole processing fixing device

Technical Field

The utility model belongs to engine bearing cap processing field, in particular to bearing cap bolt hole processing fixing device.

Background

The engine bearing cap manufacturing procedure is more and the processing cost is higher, and wherein it is one essential process in the course of working to bore the bolt hole, is the important process in the bearing cap processing, and prior art has following several problems:

the main bearing cap bolt is deep in drilling, the metal cutting amount is large, the drill bit is in severe environments such as high temperature and high pressure during cutting, and the drill bit is easy to damage.

The situation that the clamp is not clamped tightly is caused to happen occasionally due to improper operation in the machining process, so that the bolt hole is deviated, or the position degree of the bolt hole is out of tolerance, and in addition, the drill bit is possibly deviated, so that the drill bit is broken, or the bearing cover slightly deviates in the machining process, or shakes, the cutter abrasion is aggravated, or the cutter is broken.

One bearing cover is provided with two holes, and the efficiency of processing only one hole by a common drilling machine is low.

The known processing method has the defects of frequent tool changing, easy occurrence of faults such as tool breakage and the like, and difficult improvement of production efficiency and product quality.

The known manual clamping method can cause that an operator is difficult to assemble and disassemble during loading and unloading, the labor intensity of workers is increased, and the working efficiency is reduced.

The known processing method has the defects of low repeated positioning precision and difficulty in ensuring the position degree and the verticality of a processed hole.

Therefore, the technical problem to be solved in the field is to provide a bearing cap bolt hole clamp which is accurate in clamping and positioning, reduces the workload of operators and is reliable in clamping.

Disclosure of Invention

The utility model aims at providing an engine bearing cap anchor clamps for drilling to exist not enough among the above-mentioned prior art, machining efficiency is low when solving drilling, and the straightness that hangs down in hole is poor, the problem that the repeated positioning accuracy is low when pressing from both sides tightly.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes: the utility model provides a bearing cap bolt hole processing fixing device, includes positive clamp plate, positive depression bar, bracing piece, round pin axle, support, first tight hydro-cylinder of clamp, the tight hydro-cylinder of second clamp and anchor clamps framework, positive clamp plate is through round pin hub connection positive depression bar, through round pin hub connection bracing piece in the middle of the positive depression bar, and the first tight hydro-cylinder of clamp of round pin hub connection is passed through to the positive depression bar bottom, and the bracing piece is installed on the support, positive clamp plate, positive depression bar, bracing piece, round pin axle, support and first tight hydro-cylinder of clamp are all installed in the anchor clamps framework, the tight hydro-cylinder of second clamp is installed on anchor clamps framework top, and the tight hydro-cylinder top of second clamp is connected with the wedge round pin, and the wedge round pin can reciprocate along with the tight hydro-cylinder of second clamp.

The fixture comprises a fixture frame body, and is characterized in that a positive positioning block, a side supporting block and a middle supporting block are connected to the bottom of the fixture frame body, the positive positioning block and the side supporting block are fixed between a support and the fixture frame body, the positive positioning block is connected with the side positioning block, the side positioning block is connected with the side supporting block, the middle supporting block is connected with the side supporting block, and a groove for placing a bearing cover is formed by the positive positioning block, a measuring position block, the side supporting block, the middle supporting block and a side pressing plate.

Furthermore, the bottom end of the positive pressure plate is connected with a handle, and the positive pressure plate is installed at the top end of the positive pressure rod by taking the pin shaft as a rotating center.

Furthermore, two inclined planes are arranged on two sides of the wedge-shaped pin, each inclined plane is connected with one side pressure plate, one side of each side pressure plate is an inclined plane, the side pressure plates are distributed on two sides of the inclined plane of the wedge-shaped pin from left to right, the angle of the inclined plane of the wedge-shaped pin and the angle of the inclined plane of the side pressure plate are in a complementary relationship, and springs are connected between the pressure plates on two sides.

Furthermore, the shape of positive locating piece is the character cut in bas-relief, and bottom and bearing cap deciliter face contact, both sides and bearing cap tang face contact, are equipped with the hole that can supply the drill bit to pass through in positive locating piece bottom, and the hole periphery is equipped with cross chip groove.

Furthermore, the clamp frame body is a rectangular frame body with an unclosed front surface, and a through hole is formed in the bottom of the clamp frame body and is used for installing a replaceable drill bushing for guiding the direction of the drill bit.

Furthermore, the side locating piece is the semicircle locating piece, installs on the anchor clamps framework.

Furthermore, the side supporting blocks are in a concave shape, the two ends of each side supporting block are provided with replaceable positioning blocks and are arranged on the fixture frame body, the middle supporting block is in an I shape, the two ends and the two sides of each side supporting block are provided with holes for conveniently connecting the replaceable positioning blocks, the side supporting blocks are arranged on the two sides of the middle supporting block, and the side supporting blocks are opposite to the grooves of the middle supporting block and are arranged on the fixture frame body.

The utility model has the advantages that:

(1) the utility model discloses the braced frame body is the main part of anchor clamps, supports other parts in anchor clamps to set up the drill bushing for the drill bit at the braced frame body back, combine the braced frame body of drill bushing and anchor clamps together through pressing the cover bolt, for the drill bit direction when drilling, reduce the drill bit under the big cutting force condition and draw the inclined to one side problem.

(2) A plurality of sets of fixtures can be installed on one supporting frame body, and a plurality of bearing covers can be machined simultaneously by matching with a plurality of drill bit sliding table machine tools, so that the working efficiency is greatly improved. Each group of clamp units uses two clamping oil cylinders, one of the clamping oil cylinders is connected with a positive pressure rod and a positive pressure plate, and a bearing cover is fixed on a positive positioning block from the vertical direction of the stamping surface of a workpiece, so that the bearing cover cannot move. The other oil cylinder is connected with a wedge-shaped pin which is matched with the inclined plane on the side pressure plate to press the side positioning block from the side surface of the bearing cover to play a positioning role, so that the workpiece can be positioned at a correct position through the positioning function of the side pressure plate even if an operator does not cling to the side positioning block during positioning.

(3) The bearing cover is fixed on the positive positioning block, the direction of the clamping force is consistent with the direction of a drilling bit, the workpiece can be guaranteed not to deviate and vibrate during drilling, the drill bit cannot be deviated, and the service life of the drill bit is prolonged. The bottom of the positive positioning part is provided with a round hole for the drill to pass through, and a cross chip removal groove is arranged around the hole, so that chip removal during drilling and machining is facilitated. Be provided with the round pin that can rotate between depression bar and briquetting, can turn the briquetting to the depression bar another side after processing is accomplished, increase the distance between briquetting and the bearing cap and be convenient for unloading, clearance iron fillings after processing is accomplished.

(4) Because most area of the bearing cover is exposed outside, the cooling device provides favorable conditions for cooling the workpiece, can flush cooling liquid from the front surface of the bearing cover and the position of the drill bit, furthest ensures the heat dissipation in the processing process, improves the processing environment of the drill bit, and prevents the drill bit from being worn out too early due to overheating and even burnt.

(5) The fixture is convenient for installing a plurality of groups of positioning blocks and clamping a plurality of groups of workpieces, the supporting seat is designed into two types, the side supporting blocks are concave, the middle supporting block is I-shaped, the side positioning blocks are installed on two sides of the middle supporting block during use, and the replaceable positioning blocks are installed at corresponding positions by bolts. When the clamping number is required to be increased, the number of the middle supporting blocks is increased. The method is convenient, saves materials and reduces the processing cost for manufacturing the clamp. When the clamp is adjusted, the positioning blocks with different thicknesses can be replaced to adapt to different products or adjust the size. When the clamp positioning block is worn, the clamp can be quickly repaired only by replacing the positioning block.

(6) When the clamp is used, the bolt is inserted firstly, and when the wedge-shaped pin is inserted along with the oil cylinder arranged above the clamp frame body, the positioning blocks matched with the wedge-shaped pin clamp the bearing cover to two sides to position the bearing cover on the side positioning blocks. Then, an operator rotates the pressing block to one side of the typing surface of the bearing cover, the clamping oil cylinder connected with the positive pressing plate clamps the pressing block to complete clamping of the bearing cover, and then the drill bit is inserted into the drill bushing from the middle splitting surface direction of the bearing cover and is guided by the drill bushing to drill. The cutting fluid is simultaneously cooled from the front surface and the median plane of the bearing cap. After drilling is completed, the drill bit returns along the processed bolt hole, the clamping oil cylinder above the clamp frame body is loosened, the wedge-shaped pin is pulled out, the side pressure plate moves in the direction opposite to the large surface of the bearing cover under the action of the spring to release the positioning of the bearing cover, then the positive pressure rod is loosened to release the clamping of the bearing cover, and an operator rotates the positive pressure plate to the opposite position to conveniently complete blanking.

(7) As the clamp positioning blocks are easy-to-wear parts, all the positioning blocks are designed into replaceable connection modes, so that the clamp is convenient to maintain in the future. And the positioning blocks with different thicknesses can be replaced when different products are replaced, and certain flexibility is reserved for the clamp.

(8) The clamp comprehensively considers the processing efficiency, the heat dissipation during processing, the positioning accuracy and the portability of stable clamping operation, thereby not only improving the processing efficiency, but also reducing the processing cost.

Drawings

The invention will be further described with reference to the following description of the drawings

Fig. 1 is the structural schematic diagram of the bearing cap drilling jig of the present invention.

Fig. 2 is the left side view structure diagram of the bearing cap boring grab of the utility model.

Fig. 3 is a cross-sectional view of fig. 2A according to the present invention.

Fig. 4 is a cross-sectional view of the present invention at fig. 2D.

Fig. 5 is a rear view of the clamp of the present invention.

Fig. 6 is a front view of the clamp of the present invention.

Fig. 7 is a partially enlarged view of a portion I of fig. 6 according to the present invention.

Fig. 8 is a structural view of the clamp side support block of the present invention.

Fig. 9 is a schematic view of a concave surface of the side support block of the present invention.

Fig. 10 is a structural diagram of the middle support block of the present invention.

Fig. 11 is a schematic view of the direction a of fig. 10 according to the present invention.

Fig. 12 is a schematic view of the present invention from direction B to fig. 10.

The labels in the figures are: 1-positive pressure plate, 2-positive pressure rod, 3-support rod, 4-pin shaft, 5-support, 6-first clamping oil cylinder, 7-clamp frame, 8-second clamping oil cylinder, 9-spring, 10-wedge pin, 11-side pressure plate, 12-positive positioning block, 13-side positioning block, 14-side supporting block, 15-middle supporting block, 16-drill bushing, 101-handle, 1201-drill bit avoidance hole and 1202-cross chip groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless otherwise defined, technical or scientific terms used in the embodiments of the present application should have the ordinary meaning as understood by those having ordinary skill in the art to which the present invention belongs. The use of "first," "second," and similar terms in the embodiments of the invention do not denote any order, quantity, or importance, but rather the embodiments are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. "upper," "lower," "left," "right," "horizontal," and "vertical" are used merely for relative terms as to the orientation of the elements in the drawings, and these directional terms are relative terms, which are used for descriptive and clarity relative to the elements and which can vary accordingly depending on the orientation in which the elements in the drawings are placed.

The utility model provides a bearing cap bolt hole processing fixing device, it includes that there is the drill bit to dodge hole 1201 in the 7 anchor clamps frameworks of anchor clamps framework, and side supporting shoe 14, middle supporting shoe 15 are installed on the base, owing to support two ascending side locating pieces of side. The positive pressure plate 1, the pin shaft 4, the positive pressure rod 2 and the support rod 3 are connected together to tightly press the bearing cover from the front side of the bearing cover, and the first clamping oil cylinder 6 is connected with the positive pressure rod 2 to provide clamping force for the positive pressure rod. The wedge pin 10 and the side pressure plate 11 are connected together to provide a downward force for the first clamping cylinder 6, so that the wedge pin 10 moves downwards to push the side pressure plate 11 to clamp the bearing cover from the side surface of the bearing cover. The two wedge surfaces of one wedge pin 10 can push the two side press plates 11 to clamp two workpieces.

The positive pressure plate 1 is connected with the positive pressure rod 2 through the pin shaft 4, so that the positive pressure plate 1 can rotate around the pin shaft at the top end of the positive pressure rod 2, and therefore when the operation clamp is used for feeding and discharging, the positive pressure rod 2 cannot cause excessive interference to the action of an operator, and the speed during clamping is improved. The middle of the positive pressure rod is connected with a support rod 3 through a pin shaft 4, the bottom end of the positive pressure rod 2 is connected with a second clamping oil cylinder 8, the fulcrum position of the support rod 3 is positioned at the front half section of the positive pressure rod 2, a labor-saving lever is formed, the clamping force of the oil cylinder is increased, and the phenomenon that the cutting resistance cannot be counteracted by the clamping force during processing is avoided. The bottom end of the positive pressure plate 1 is connected with a handle 101, so that an operator can hold the positive pressure plate conveniently during working.

The top end of the clamp frame body is provided with a second clamping oil cylinder 8, the top end of the second clamping oil cylinder 8 is connected with a wedge-shaped pin 10, the wedge-shaped pin 10 can move up and down along with the second clamping oil cylinder 8, and two inclined surfaces of the wedge-shaped pin are matched with the inclined surfaces of the side pressing plates 11. Two sides of the wedge-shaped pin 10 are two inclined planes, one side of the side pressure plate 11 is an inclined plane, the side pressure plates are distributed on the two sides of the inclined plane of the wedge-shaped pin one by one, and the angle of the inclined plane of the wedge-shaped pin and the angle of the inclined plane of the side pressure plate are in a complementary relationship. When the second clamping oil cylinder 8 is pressed down, the wedge-shaped pin moves down the press plates 11 at the two sides to move towards the two sides under the action of the inclined plane matching, so that the bearing cover is positioned on the side positioning block, and the springs 9 are connected between the press plates 11 at the two sides. When the second clamping oil cylinder 8 moves upwards, the pressure plates at the two sides approach each other under the action of the spring, and the positioning of the bearing cover is released.

The positive positioning block 12 is concave, the bottom end of the positive positioning block is in surface contact with the bearing cover, the two sides of the positive positioning block are in surface contact with the spigot of the bearing cover, a hole 1201 through which a drill bit can pass is formed in the bottom end of the positive positioning block, the drill bit drills the bearing cover through the hole of the positive positioning block, a cross chip groove 1202 is formed in the periphery of the hole, and a large amount of iron chips generated by drilling can be discharged through the cross chip groove.

The fixture frame body 7 is a rectangular frame body with an unclosed front surface, and a through hole is formed in the bottom of the fixture frame body and is used for installing a replaceable drill bushing 16 for guiding the direction of a drill bit. The replaceable drill bushing is fixed on the clamp frame body through the pressing sleeve bolt, the side positioning block 13 is a semicircular positioning block, the side positioning block 13 is connected with the side supporting block 14 and the middle supporting block 15, the side supporting seats at two ends are designed to be in a concave shape, the positioning blocks at two sides are designed to be connected together to form an I shape for the middle supporting seat, and therefore when the clamp needs to be disassembled, due to the fact that the number of the components is reduced, disassembling time is saved, and the installation is also convenient. The side supporting seat, the middle supporting seat, the two sides of the side supporting seat are provided with connecting holes for connecting the semicircular positioning blocks, and the two sides of the side supporting seat are provided with holes for connecting the side positioning blocks. The bearing cover is arranged between the grooves of the two supporting blocks and is tightly attached to the positioning block. And is mounted on the jig frame 7. All locating pieces are designed into a disconnectable connection mode, so that the fixture is convenient to adjust, different locating pieces can be replaced according to different bearing covers, and the flexibility of the fixture is improved.

The clamp acts: firstly, a bearing cover is placed into a groove formed by a positive positioning block 12, a side positioning block 13, a side supporting block 14, a middle supporting block 15 and a side pressure plate 11, the bearing cover is clamped in the groove and cannot fall down due to a small gap between the side positioning block 13 and a spigot of the bearing cover, a second clamping oil cylinder 8 further pushes a wedge pin 10 to push the wedge pin downwards to enable the side pressure plate to press the bearing cover towards two sides to complete the positioning of the side surface, then the positive pressure plate rotates to one side opposite to the bearing cover, then the second clamping oil cylinder 8 pushes a positive pressure rod 2 to rotate around a support 5 to enable the side pressure plate 11 to press the bearing cover from the front side, and the positioning process of the bearing cover can be started.

When the blanking is needed after the machining, the clamping oil cylinder 6 firstly drives the positive pressure rod to rotate, so that the positive pressure plate 1 leaves the bearing cover, then the second clamping oil cylinder 8 drives the wedge-shaped block to move upwards, the two side pressure plates 11 return under the action of the middle connecting spring 9, the positioning of the bearing cover can be removed, the positive pressure plate 1 rotates to the side deviating from the bearing cover, and the blanking which can be conveniently operated is enlarged.

All components are mounted within the jig frame 7. All the components in the above description form a clamp group arranged in the clamp frame, and a plurality of groups of clamps can be arranged in one clamp group, so that a plurality of bearing covers can be processed simultaneously, and the processing efficiency is greatly improved.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A bearing cover bolt hole processing and fixing device is characterized by comprising a positive pressure plate (1), a positive pressure rod (2), a support rod (3), a pin shaft (4), a support (5), a first clamping oil cylinder (6), a second clamping oil cylinder (8) and a clamp frame body (7), wherein the positive pressure plate (1) is connected with the positive pressure rod (2) through the pin shaft (4), the middle of the positive pressure rod (2) is connected with the support rod (3) through the pin shaft (4), the bottom end of the positive pressure rod (2) is connected with the first clamping oil cylinder (6) through the pin shaft (4), the support rod (3) is arranged on the support (5), the positive pressure plate (1), the positive pressure rod (2), the support rod (3), the pin shaft (4), the support (5) and the first clamping oil cylinder (6) are all arranged in the clamp frame body (7), the second clamping oil cylinder (8) is arranged at the top end of the clamp frame body (7), the top end of the second clamping oil cylinder (8) is connected with a wedge-shaped pin (10), and the wedge-shaped pin (10) moves up and down along with the second clamping oil cylinder (8);

the fixture comprises a fixture frame body (7), wherein the bottom of the fixture frame body is connected with a positive positioning block (12), a side positioning block (13), a side supporting block (14) and a middle supporting block (15), the positive positioning block (12) and the side supporting block (14) are fixed between a support (5) and the fixture frame body (7), the positive positioning block (12) is connected with the side positioning block (13), the side positioning block (13) is connected with the side supporting block (14), the middle supporting block (15) is connected with the side supporting block (14), and the positive positioning block (12), a measuring position block (13), the side supporting block (14), the middle supporting block (15) and the side pressing plate (11) form a groove for placing a bearing cover.

2. The bearing cap bolt hole machining fixing device is characterized in that a handle (101) is connected to the bottom end of the positive pressure plate (1), and the positive pressure plate (1) is installed at the top end of the positive pressure rod (2) by taking the pin shaft (4) as a rotating center.

3. The bearing cap bolt hole machining fixing device is characterized in that two inclined surfaces are arranged on two sides of the wedge-shaped pin (10), each inclined surface is connected with one side pressure plate (11), one side of each side pressure plate (11) is an inclined surface, the side pressure plates (11) are distributed on two sides of the inclined surface of the wedge-shaped pin (10) in a left-right mode, the inclined surface angle of the wedge-shaped pin (10) is in a complementary relation with the inclined surface angle of the side pressure plate (11), and a spring (9) is connected between the two side pressure plates (11).

4. The bearing cap bolt hole processing and fixing device according to claim 1, characterized in that the positive positioning block (12) is in a concave shape, the bottom end of the positive positioning block is in contact with the joint surface of the bearing cap, the two sides of the positive positioning block are in contact with the spigot surface of the bearing cap, a hole (1201) for a drill bit to pass through is arranged at the bottom end of the positive positioning block (12), and a cross chip groove (1202) is arranged at the periphery of the hole.

5. The bearing cap bolt hole machining fixing device is characterized in that the clamp frame body (7) is a rectangular frame body with an unclosed front face, and a replaceable drill bushing (16) for guiding the direction of a drill bit is installed in a through hole in the bottom of the clamp frame body (7).

6. The bearing cap bolt hole machining fixing device according to claim 1, wherein the side positioning block (13) is a semicircular positioning block and is mounted on the clamp frame body (7).

7. The bearing cap bolt hole machining fixing device according to claim 1, wherein the side support blocks (14) are in a recessed shape, replaceable positioning blocks are arranged at two ends of the side support blocks and are mounted on the clamp frame body (7), the middle support block (15) is in an I-shape, holes are formed at two ends and two sides of the middle support block for connecting the replaceable positioning blocks, the side support blocks (14) are mounted at two sides of the middle support block (15), and the side support blocks (14) are opposite to the grooves of the middle support block (15) and are mounted on the clamp frame body (7).