CN218225534U

CN218225534U - Clamp for pin hole machining

Info

Publication number: CN218225534U
Application number: CN202222197757.7U
Authority: CN
Inventors: 谢丹桂
Original assignee: HUNAN CHUANGAN FLAMEPROOF ELECTRICAPPLIANCES CO Ltd
Current assignee: HUNAN CHUANGAN FLAMEPROOF ELECTRICAPPLIANCES CO Ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2023-01-06
Anticipated expiration: 2032-08-19

Abstract

The utility model discloses a clamp for processing pin holes, which comprises a first clamping component and a second clamping component, which are respectively provided with a clamping surface; the two clamping surfaces are respectively provided with a first positioning groove and a second positioning groove; the positioning assembly is used for positioning the relative positions of the two clamping assemblies and adjusting the relative distance to enable the two clamping assemblies to be positioned on the same central line and lock the clamping pin shaft; the first clamping assembly is provided with a guide hole for the drill bit to process a pin hole through a pin shaft for positioning and clamping. The pin shaft is arranged in the second positioning groove, the relative distance between the first clamping assembly and the second positioning assembly is adjusted to the cylindrical surface of the pin shaft through the positioning assemblies, the first clamping assembly and the second positioning assembly are matched with the two positioning grooves simultaneously, the positioning assemblies are locked, multidirectional radial positioning of the pin shaft is achieved, the first clamping assembly, the second clamping assembly and the second positioning assembly are located on the same central line, the axis of the guide hole passes through the central line, the drill bit is aligned with the guide hole through position adjustment, the axis of the drill bit is located on the central line of the pin shaft, the drill press is operated to penetrate through the guide hole to process a pin hole in the pin shaft, and guiding is accurate.

Description

Clamp for pin hole machining

Technical Field

The utility model relates to a round pin axle processing technology field especially relates to an anchor clamps for pinhole processing.

Background

The pin shaft is an assembly part which is widely applied to the rotary connection of mechanical equipment, and during installation, the pin shaft is only required to be arranged in the hole sleeve and then the cotter pin is inserted, and the hole sleeve part and the connecting part can rotate relatively based on the pin shaft.

In order to meet the assembly requirements of the pin shaft in different assembly environments, the size of the pin shaft is limited by certain requirements, the pin shaft can be correspondingly inserted into a cotter pin while having a small radial moving space after being assembled, and therefore the pin hole of the pin shaft needs to be machined strictly according to drawings to meet the design requirements. Because the round pin axle is cylindrical, the difficult alignment target drilling position of drill bit receives pinhole face of cylinder structure influence simultaneously in the course of working, and the drill bit easily skids, and the difficult control of drilling position size leads to product processing poor stability, leads to the product defective rate high. Therefore, when the pin shaft is drilled, the pin shaft needs to be drilled through a fixture which is stable in clamping and accurate in drilling position guiding.

SUMMERY OF THE UTILITY MODEL

The utility model provides an anchor clamps for pinhole processing to the pinhole processing stability of round pin axle is poor in the solution prior art, technical problem that the defective rate is high.

The utility model adopts the technical scheme as follows:

a clamp for pin hole machining comprises a first clamping assembly and a second clamping assembly;

the first clamping assembly and the second clamping assembly are respectively provided with a clamping surface which is arranged oppositely and used for clamping a pin shaft;

the first clamping surface of the first clamping assembly is provided with a first positioning groove matched with the cylindrical surface of the pin shaft, and the second clamping surface of the second clamping assembly is provided with a second positioning groove matched with the cylindrical surface of the pin shaft;

the fixture further comprises a positioning assembly, the positioning assembly is used for fixing the relative position between the first clamping assembly and the second clamping assembly so as to enable the first positioning groove and the second positioning groove to be oppositely arranged, and the positioning assembly is further used for adjusting the relative distance between the first clamping assembly and the second clamping assembly and locking the first clamping assembly and the second clamping assembly so as to clamp the pin shaft;

the first clamping assembly is provided with a guide hole in the first positioning groove, the guide hole is matched with the axis position of a pin shaft of the clamp to be processed, and the guide hole is used for enabling a drill bit to process a pin hole through the pin shaft for positioning and clamping.

As a preferable mode, the positioning assembly comprises one or more groups of bolts, and the small ends of the screws of the bolts sequentially penetrate through the first clamping assembly and the second clamping assembly and then are connected with the nuts of the bolts, or the small ends of the screws of the bolts sequentially penetrate through the second clamping assembly and the first clamping assembly and then are connected with the nuts of the bolts.

As a preferable mode, the positioning assembly further includes an elastic member, and two ends of the elastic member respectively abut against the first clamping surface and the second clamping surface, so that when the bolt and the nut are loosened, the first clamping assembly and the second clamping assembly are under the elastic action of the elastic member to increase the relative distance.

As a preferable mode, the elastic member is a spring sleeved on the bolt, and two ends of the spring respectively abut against the first clamping surface and the second clamping surface.

As a preferable mode, a positioning plate is fixedly arranged on one side of the first clamping component and/or one side of the second clamping component, and the positioning plate is used for abutting against the bottom of the pin shaft clamped between the first positioning groove and the second positioning groove so as to axially position the pin shaft in the clamp.

As a preferable mode, the first clamping assembly further comprises a drilling sleeve arranged in the guide hole, and the aperture of the drilling sleeve is matched with the shaft diameter of a drill bit corresponding to the target pin hole machining.

As a preferable mode, the second clamping assembly comprises a base and a clamping piece arranged on the base, and the second positioning groove is formed in the clamping piece; the first clamping assembly is provided with at least one first positioning groove, and the clamping pieces and the first positioning grooves are arranged in a one-to-one correspondence mode.

Preferably, a handle is arranged on one side of the base and used for adjusting the position of the clamp on the drilling machine during drilling.

As a preferable mode, the first positioning groove and the second positioning groove are both V-shaped grooves, and each V-shaped groove has two positioning surfaces.

As a preferable mode, the width of the positioning surface of the first positioning groove is smaller than that of the second positioning groove, so that the lower limit of the size of the pin shaft adapted to the clamp is enlarged; the first clamping assembly is provided with mounting surfaces which are matched with the gradient of the positioning surface of the second positioning groove on two sides of the first positioning groove, so that the obstruction between the first positioning groove and the second positioning groove is eliminated, and the adjustable distance range of the clamp is enlarged.

The utility model discloses following beneficial effect has: the first clamping assembly and the second clamping assembly are arranged from top to bottom, the second clamping assembly is arranged on a drilling machine, a pin shaft is arranged in a second positioning groove, so that the cylindrical surface of the pin shaft is matched with the second positioning groove and then radially positioned, the first clamping assembly and the second positioning assembly are adjusted to be in relative distance to the cylindrical surface of the pin shaft through the positioning assemblies and are also matched with the first positioning groove, the pin shaft is clamped between the first positioning groove and the second positioning groove, the positioning assemblies are locked at the moment and then multi-direction radial positioning of the pin shaft is realized, the position of a clamp is adjusted so that a drill bit of the drilling machine is aligned with a guide hole and then the axis of the drill bit penetrates through the axis of the guide hole to the central line of the pin shaft, the drill bit is pressed down to penetrate through the guide hole to process a pin hole in the pin shaft, the guide hole of the clamp assists in radial positioning of the drill bit, the guide of the drill position is accurate, and the processing stability of a product is improved.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

FIG. 1 is a cross-sectional view of a preferred embodiment of the clamp of the present invention;

FIG. 2 is a cross-sectional view of the clamp of the preferred embodiment of the present invention in a bolt loosened condition;

fig. 3 is a side view of a preferred embodiment of the present invention;

fig. 4 is a top view of the preferred embodiment of the present invention.

1. The clamping device comprises a first clamping component 11, a first clamping surface 12, a first positioning groove 13, a guide hole 14, a mounting surface 2, a second clamping component 21, a second clamping surface 22, a second positioning groove 23, a clamping piece 24, a base 25, a handle 31, a bolt 32, a spring 33, a drilling sleeve 34, a positioning plate 4, a pin shaft 41 and a pin hole.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 to 4, a preferred embodiment of the present invention provides a jig for pin hole machining, which includes a first clamping assembly 1 and a second clamping assembly 2; the first clamping component 1 and the second clamping component 2 are respectively provided with clamping surfaces which are arranged oppositely and used for clamping the pin shaft 4; the first clamping surface 11 of the first clamping component 1 is provided with a first positioning groove 12 matched with the cylindrical surface of the pin shaft 4, and the second clamping surface 21 of the second clamping component 2 is provided with a second positioning groove 22 matched with the cylindrical surface of the pin shaft 4; the fixture further comprises a positioning component, the positioning component is used for fixing the relative position between the first clamping component 1 and the second clamping component 2 so as to enable the first positioning groove 12 and the second positioning groove 22 to be arranged oppositely, and the positioning component is also used for adjusting the relative distance between the first clamping component 1 and the second clamping component 2 and locking so as to clamp the pin shaft 4; the first clamping component 1 is provided with a guide hole 13 in the first positioning groove 12, the guide hole 13 is matched with the axis position of the pin shaft 4 of the clamp to be processed with the pin hole, and the guide hole 13 is used for enabling a drill bit to process the pin hole 41 through the pin shaft 4 of the clamp.

It can be understood that the first clamping assembly 1 and the second clamping assembly 2 are arranged up and down, the second clamping assembly 2 is arranged on a drilling machine, the pin shaft 4 is arranged on the second positioning groove 22 to enable the cylindrical surface of the pin shaft 4 to be matched with the second positioning groove 22 and further to be positioned in a radial direction, the relative distance between the first clamping assembly 1 and the second positioning assembly is adjusted to the cylindrical surface of the pin shaft 4 through the positioning assemblies and is also matched with the first positioning groove 12, the pin shaft 4 is clamped between the first positioning groove 12 and the second positioning groove 22, the positioning assemblies are locked at the moment to further achieve multi-direction radial positioning of the pin shaft 4, the position of the clamp is adjusted to enable a drill bit of the drilling machine to be aligned with the guide hole 13 to enable the drill bit axis to penetrate through the axis of the guide hole 13 to the central line of the pin shaft 4, the drill bit is pressed down to penetrate through the guide hole 13 to machine a pin hole 41 in the pin shaft 4, the guide hole 13 of the clamp assists in radial positioning of the drill bit, guiding position guiding of the drill is accurate, and product machining stability is improved.

Further, the first positioning groove 12 and the second positioning groove 22 of the present embodiment are both V-shaped grooves, and each V-shaped groove has two positioning surfaces, wherein each V-shaped groove of the present embodiment preferably has an angle of 45 °, and other embodiments may not be limited; the positioning surface of the V-shaped groove is in line contact with the cylindrical surface of the pin shaft 4, the first positioning groove 12 and the second positioning groove 22 are matched to radially position the four line positions of the cylindrical surface of the pin shaft 4, and the clamping is stable;

specifically, the width of the positioning surface of the first positioning groove 12 is smaller than that of the second positioning groove 22, so that the relative distance between the first positioning groove 12 and the second positioning groove 22 can be reduced, the size lower limit of the pin shaft 4 adapted to the clamp can be further enlarged, and meanwhile, the second positioning groove 22 is kept to have a larger-size mounting surface 14 adapted to the large-size pin shaft 4 to keep stable clamping; the first clamping component 1 is provided with mounting surfaces 14 matched with the gradient of the positioning surfaces of the second positioning grooves 22 on two sides of the first positioning grooves 12, so that the mounting surfaces 14 on two sides of the first positioning grooves 12 can be attached to the positioning surfaces of the second positioning grooves 22, the obstruction between the first positioning grooves 12 and the second positioning grooves 22 is eliminated, the adjustable distance range of the clamp is enlarged, and the pin shaft 4 is matched with the smaller size for clamping and processing.

Furthermore, the positioning assembly of this embodiment includes one or more sets of bolts 31, and the small ends of the screws of the bolts 31 are connected with the nuts of the bolts 31 after sequentially passing through the first clamping assembly 1 and the second clamping assembly 2 or after sequentially passing through the second clamping assembly 2 and the first clamping assembly 1, so that the first clamping assembly 1 and the second clamping assembly 2 are positioned relative to the bolts 31, and are guided to move relative to each other, and the pins 4 located between the first positioning groove 12 and the second positioning groove 22 can be clamped by the locking bolts 31;

furthermore, the positioning assembly further comprises an elastic piece, two ends of the elastic piece are respectively abutted against the first clamping surface 11 and the second clamping surface 21, the elastic piece is used for enabling the first clamping assembly 1 and the second clamping assembly 2 to be subjected to the elastic action of the elastic piece so as to increase the relative distance when the bolt 31 and the nut are unscrewed, and after the current pin shaft 4 is drilled, the nut is loosened, the first clamping assembly 1 is subjected to the elastic action, and the first clamping assembly is lifted so as to take out the pin shaft 4 and place the pin shaft 4 to be machined for clamping again for machining; the elastic element is a spring 32 sleeved on the bolt 31, and two ends of the spring 32 respectively abut against the first clamping surface 11 and the second clamping surface 21.

In this embodiment, a positioning plate 34 is fixedly disposed on one side of the second clamping assembly 2, the positioning plate 34 is used for abutting against the bottom of the pin 4 clamped between the first positioning groove 12 and the second positioning groove 22 to axially position the pin 4 in the fixture, and the axial position of the axis of the guide hole 13 relative to the pin 4 can be further positioned by axially positioning the pin 4; in other embodiments, the positioning plate 34 may also be disposed on one side of the first clamping assembly 1.

In this embodiment, the first clamping assembly 1 further includes a drill hole sleeve 33 disposed in the guide hole 13 and subjected to heat treatment, so as to increase the guiding precision and the service life of the position of the guide hole 13; the bore diameter of the drilling sleeve 33 is matched with the shaft diameter of a drill bit corresponding to the processing of the target pin hole 41, so that different drilling sleeves 33 can be replaced according to the sizes of the pin holes 41 required by the pin shafts 4 with different sizes.

In this embodiment, the second clamping assembly 2 includes a base 24 and a clamping member 23, and the second positioning slot 22 is formed in the clamping member 23; the first clamping assembly 1 is provided with at least one first positioning groove 12, clamping pieces 23 are arranged on the base 24 corresponding to the first positioning groove 12, namely the quantity and the positions of the clamping pieces 23 correspond to the first positioning groove 12;

the clamping member 23 of the present embodiment is an angle steel welded to the base 24 through a steel plate, and the first clamping member 1 is made of a steel plate/iron plate;

as shown in the figure, two positioning grooves are formed in parallel on two sides of the clamping surface of the first clamping assembly 1, and the base 24 is welded with two clamping pieces 23 corresponding to the first positioning groove 12; wherein, bolt 31 wears to locate the middle part of first clamping subassembly 1 and second clamping subassembly 2, and the atress is even when making both sides clamping, and in addition, the width that the angle steel is located the locating surface in the outside can outwards extend and set up to bigger size to cooperate with installation face 14 and the round pin axle 4 of the great size specification of adaptation simultaneously.

In this embodiment, a handle 25 is disposed on one side of the base 24 for adjusting the position of the fixture on the drill press during drilling, so as to align the guiding hole 13 with the drill.

In some embodiments, the fixture may be provided with a plurality of first positioning grooves 12 and second positioning grooves 22 which are uniformly arranged in parallel, and simultaneously position a large number of pin shafts 4 in a batch, and the fixture is matched with a multi-bit drilling machine or an automatic drilling device, so that pin holes 41 are simultaneously machined on a batch of pin shafts 4 which are clamped and positioned, and the machining efficiency is improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The clamp for machining the pin hole is characterized by comprising a first clamping component (1) and a second clamping component (2);

the first clamping component (1) and the second clamping component (2) are respectively provided with clamping surfaces which are arranged oppositely and used for clamping a pin shaft (4);

the first clamping surface (11) of the first clamping assembly (1) is provided with a first positioning groove (12) matched with the cylindrical surface of the pin shaft (4), and the second clamping surface (21) of the second clamping assembly (2) is provided with a second positioning groove (22) matched with the cylindrical surface of the pin shaft (4);

the clamp further comprises a positioning assembly, the positioning assembly is used for fixing the relative position between the first clamping assembly (1) and the second clamping assembly (2) so as to enable the first positioning groove (12) and the second positioning groove (22) to be arranged oppositely, and the positioning assembly is also used for adjusting the relative distance between the first clamping assembly (1) and the second clamping assembly (2) and locking so as to clamp the pin shaft (4);

the first clamping assembly (1) is provided with a guide hole (13) in the first positioning groove (12), the guide hole (13) is matched with the axis position of a pin hole to be machined of the pin shaft (4) of the clamp in a clamping manner, and the guide hole (13) is used for enabling a drill bit to machine the pin hole (41) through the pin shaft (4) for positioning and clamping.

2. The clamp for pin hole machining according to claim 1, wherein the positioning assembly comprises one or more groups of bolts (31), and the small ends of the screws of the bolts (31) sequentially penetrate through the first clamping assembly (1) and the second clamping assembly (2) and then are connected with the nuts of the bolts (31), or the small ends of the screws of the bolts (31) sequentially penetrate through the second clamping assembly (2) and the first clamping assembly (1) and then are connected with the nuts of the bolts (31).

3. The clamp for pin hole machining according to claim 2, wherein the positioning assembly further comprises an elastic member, and two ends of the elastic member abut against the first clamping surface (11) and the second clamping surface (21) respectively, so that when the bolt (31) and the nut are unscrewed, the first clamping assembly (1) and the second clamping assembly (2) are subjected to the elastic force of the elastic member to increase the relative distance.

4. The clamp for pin hole machining according to claim 3, wherein the elastic member is a spring (32) sleeved on the bolt (31), and two ends of the spring (32) abut against the first clamping surface (11) and the second clamping surface (21) respectively.

5. The clamp for pin hole machining according to claim 1, wherein a positioning plate (34) is fixedly arranged on one side of the first clamping assembly (1) and/or one side of the second clamping assembly (2), and the positioning plate (34) is used for abutting against the bottom of the pin shaft (4) clamped between the first positioning groove (12) and the second positioning groove (22) so as to axially position the pin shaft (4) in the clamp.

6. The clamp for pin hole machining according to claim 1, wherein the first clamping assembly (1) further comprises a drilling sleeve (33) arranged in the guide hole (13), and the diameter of the drilling sleeve (33) is matched with the shaft diameter of a drill corresponding to the machining of the target pin hole (41).

7. The jig for pin hole machining according to claim 1, characterized in that the second chuck member (2) includes a base (24) and a chuck member (23) provided to the base (24), and the second positioning groove (22) is formed in the chuck member (23); the first clamping assembly (1) is provided with at least one first positioning groove (12), and the clamping pieces (23) are arranged in one-to-one correspondence with the first positioning grooves (12).

8. The jig for pin hole machining according to claim 7, wherein a handle (25) is provided at one side of the base (24) for adjusting the position of the jig to the drill press when drilling.

9. The jig for pin hole machining according to any one of claims 1 to 8, wherein the first positioning groove (12) and the second positioning groove (22) are each a V-shaped groove having two positioning surfaces.

10. The clamp for pin hole machining according to claim 9, wherein the width of the locating surface of the first locating groove (12) is smaller than that of the second locating groove (22) so as to enlarge the lower size limit of the pin shaft (4) adapted to the clamp; the first clamping assembly (1) is provided with mounting surfaces (14) matched with the gradient of the positioning surface of the second positioning groove (22) on two sides of the first positioning groove (12) so as to eliminate the obstruction between the first positioning groove (12) and the second positioning groove (22) and further enlarge the adjustable distance range of the clamp.