CN209894106U

CN209894106U - Inner cone angle comparator of numerical control knife handle

Info

Publication number: CN209894106U
Application number: CN201921030215.2U
Authority: CN
Inventors: 陈长硈
Original assignee: Jiangsu Shuangyang Machinery Science & Technology Co Ltd
Current assignee: Jiangsu Shuangyang Machinery Science & Technology Co Ltd
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2020-01-03
Anticipated expiration: 2029-07-04

Abstract

The utility model discloses an inner cone angle comparator of a numerical control knife handle, which comprises a shell, an end cover, a dial indicator, a movable mandrel and an elastic part; the top of the shell is provided with an opening, the bottom of the shell is provided with a boss, and the boss is provided with a first through hole; the end cover is fixedly connected to the top of the shell, and a second through hole is formed in the end cover; the dial indicator is fixedly connected in the second through hole, and the measuring rod of the dial indicator extends into the shell; the movable core shaft is connected with the second through hole in a sliding mode, the top end of the movable core shaft is limited in the shell, and a measuring rod of the dial indicator is in contact with the top end of the movable core shaft; the elastic piece is arranged in the shell, and the upper end and the lower end of the elastic piece are respectively contacted with the end cover and the movable mandrel so that the conical measuring block at the bottom end of the movable mandrel extends to the outer side of the boss. The utility model discloses a simple and easy detector of cone angle of numerical control handle of a knife taper hole, the testing process is simple, has improved work efficiency, and detects the precision higher, has guaranteed the quality of material spare.

Description

Inner cone angle comparator of numerical control knife handle

Technical Field

The utility model relates to an examine technical field in the machining, especially relate to an interior cone angle comparator of numerical control handle of a knife.

Background

The cutter handle is one of important universal parts required by a numerical control machine tool, is directly arranged on a main shaft and is connected with a cutter, the requirements on the precision and the dynamic balance grade are high, the quality of the cutter handle directly influences the reliability of cutting machining and the dynamic balance of the main shaft of the machine tool, and further influences the machining precision and the surface quality of machining. One end of the tool shank is provided with a taper hole for placing the collet, and in order to ensure that the clamped tool has enough precision, the size requirement of the taper hole is high, so that before the tool shank leaves a factory, whether the taper hole meets the requirement needs to be strictly detected.

The taper angle, namely the included angle formed between two generatrices of the shaft section (the section passing through the shaft of the cone) of the cone is one of important values to be detected by the taper hole of the numerical control tool holder. In the prior art, a sine gauge measuring method is mainly adopted for detecting the taper angle of the taper hole, and when the finished cutter handle needs 100% detection, the detection method is low in efficiency and high in cost.

Therefore, it is necessary to provide a numerical control tool holder inner cone angle comparator to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an interior taper angle comparator of numerical control handle of a knife, the testing process is simple, improves work efficiency, reduction in production cost to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

an inner cone angle comparator of a numerical control knife handle comprises a shell, an end cover, a dial indicator, a movable core shaft and an elastic part; the top of the shell is provided with an opening, the bottom of the shell is provided with a cylindrical boss, the bottom of the boss is provided with a frustum, and a first through hole extending into the shell is formed in the boss and the frustum; the end cover is fixedly connected to the top of the shell, and a second through hole is formed in the end cover; the dial indicator is fixedly connected in the second through hole, and the measuring rod of the dial indicator extends into the shell; the movable core shaft is connected with the second through hole in a sliding mode, the top end of the movable core shaft is limited in the shell, a measuring rod of the dial indicator is in contact with the top end of the movable core shaft, an annular measuring block is fixedly connected to the top end of the movable core shaft, and the side portion of the measuring block is arc-shaped; the elastic piece is arranged in the shell, and the upper end and the lower end of the elastic piece are respectively contacted with the end cover and the movable mandrel so that the measuring block at the bottom end of the movable mandrel extends to the outer side of the frustum.

The utility model discloses a further improvement is, a plurality of screw hole has evenly been laid on the top of casing, and what the top of end cover corresponds is equipped with the mounting hole, and the end cover passes through fastener a fixed connection in the casing.

The utility model has the further improvement that the side part of the end cover is transversely provided with a third through hole which is communicated with the second through hole, the end of the third through hole close to the second through hole is provided with an internal thread, a jacket is arranged in the third through hole, and the sleeve of the dial indicator is clamped in the jacket; the clamping sleeve is uniformly provided with a plurality of unconnected elastic clamping pieces, and the fastening piece b is connected in the third through hole and props against the clamping pieces to reduce the center of the clamping sleeve so as to fix the sleeve of the dial indicator.

The utility model discloses a further improvement is, the second through-hole is the shoulder hole, and the step of this shoulder hole holds the bottom that presss from both sides the cover.

The utility model discloses a further improvement is, the top of activity dabber is the dog, dog sliding connection in the inner wall of casing, and the last surface contact of measuring staff and dog of amesdial.

The utility model discloses a further improvement is, the elastic component is the spring, and the upper surface of dog and the lower surface center department of end cover all are equipped with the recess, and during the recess was located to the upper and lower both ends of spring inlay, the measuring staff of amesdial was located the center department of spring.

The utility model discloses a further improvement is, boss and end cover's center department is located respectively to first through-hole, second through-hole, and first through-hole, second through-hole set up with one heart.

The utility model discloses a further improvement is, the bottom terminal surface of boss and the straightness that hangs down of first through-hole, second through-hole are less than 0.001.

The utility model discloses a further improvement scheme is, the concentricity of test block and movable core axle is less than 0.001.

The utility model has the advantages that:

one, the utility model discloses an interior cone angle comparator of numerical control handle of a knife adopts contrast method to confirm whether qualified the cone angle in material part taper hole, and the testing process is simple, when material part needs 100% to detect, very big improvement work efficiency.

Secondly, the end cover of the numerical control knife handle inner cone angle comparator of the utility model is fixed on the shell through the inner hexagonal countersunk head screws which are uniformly arranged, thereby ensuring that the end cover is in close contact with the shell, preventing sundries such as iron chips and the like from entering the shell to influence the detection precision; therefore, the end cover can be prevented from deviating, and the detection precision is improved.

Thirdly, the utility model discloses an interior taper angle comparator of numerical control handle of a knife fixes the sleeve of amesdial through the shrink that presss from both sides the cover, has increased telescopic lifting surface to can prevent that the local atress of sleeve from too big production deformation to block the measuring staff.

Fourth, the utility model discloses an interior taper angle comparator of numerical control handle of a knife, the second through-hole be the shoulder hole, during the assembly press from both sides the cover directly put in the second through-hole can, prevent to press from both sides the cover and drop to the casing in, it is more convenient during the assembly.

Fifth, the utility model discloses an interior taper angle comparator of numerical control handle of a knife, dog sliding connection are in the inner wall of casing to can prevent that the activity dabber from rocking, reduce the error that detects.

Sixth, the utility model discloses an interior cone angle comparator of numerical control handle of a knife, spring are located the inside center department of casing, and the spring inlays in the groove, prevent that the spring from producing the displacement, have guaranteed the effect that the measuring block resets.

Seventhly, the utility model discloses an interior taper angle comparator of numerical control handle of a knife, the bottom terminal surface of boss and the straightness that hangs down of first through-hole, second through-hole are less than 0.001, have further improved the precision that detects.

Eighthly, the utility model discloses an interior cone angle comparator of numerical control handle of a knife, the concentricity of survey piece and movable core axle is less than 0.001, has further improved the precision that detects.

Drawings

Fig. 1 is a front partial sectional view of the present invention.

Fig. 2 is a left side view of the present invention.

Fig. 3 is a top view of the end cap of the present invention.

Fig. 4 is a schematic view of the jacket structure of the present invention.

Fig. 5 is a schematic view of the installation of the jacket of the present invention.

Fig. 6 and 7 are schematic views of the present invention.

In the figure: 1-shell, 2-end cover, 3-dial indicator, 4-sleeve, 5-measuring rod, 6-movable mandrel, 7-spring, 8-first through hole, 9-second through hole, 10-third through hole, 11-jacket, 12-clamping piece, 13-measuring block, 14-stop block, 15-groove, 17-material piece, 18-cone angle sample gauge, 19-boss and 20-frustum.

Detailed Description

The present invention will be further clarified by the following detailed description, which is to be understood as being given only for the purpose of illustration and not for the purpose of limiting the scope of the invention, and modifications of various equivalent forms of the invention which are obvious to those skilled in the art after reading the present invention, all falling within the scope of the appended claims.

Example 1: as shown in fig. 1-5, an inner cone angle comparator of a numerical control knife handle comprises a shell 1, an end cover 2, a dial indicator 3, a movable core shaft 6 and an elastic part; the top of the shell 1 is provided with an opening, the bottom of the shell is provided with a cylindrical boss 19, the bottom of the boss 19 is provided with a frustum 20, and a first through hole 8 extending into the shell 1 is formed in the boss 19 and the frustum 20; the end cover 2 is fixedly connected to the top of the shell 1, and a second through hole 9 is formed in the end cover 2; the dial indicator 3 is fixedly connected in the second through hole 9, and the measuring rod 5 of the dial indicator extends into the shell 1; the movable core shaft 6 is connected with the second through hole 9 in a sliding mode, the top end of the movable core shaft is limited in the shell 1, the measuring rod 5 of the dial indicator 3 is in contact with the top end of the movable core shaft 6, the top end of the movable core shaft 6 is fixedly connected with an annular measuring block 13, and the side portion of the measuring block 13 is arc-shaped; the elastic piece is arranged in the shell 1, and the upper end and the lower end of the elastic piece are respectively contacted with the end cover 2 and the movable core shaft 6, so that the measuring block 13 at the bottom end of the movable core shaft 6 extends to the outer side of the frustum 20; a plurality of threaded holes are uniformly distributed at the top end of the shell 1, mounting holes are correspondingly formed at the top end of the end cover 2, and the end cover 2 is fixedly connected to the shell 1 through a fastening piece a; a third through hole 10 penetrating through the second through hole 9 is transversely formed in the side portion of the end cover 2, an internal thread is formed in the end, close to the second through hole 9, of the third through hole 10, a jacket 11 is placed in the third through hole 10, and the sleeve 4 of the dial indicator 3 is clamped in the jacket 11; a plurality of unconnected elastic clamping pieces 12 are uniformly arranged on the jacket 11, and the fastening piece b is connected in the third through hole 10 and props against the clamping pieces 12 to reduce the center of the jacket 11 so as to fix the sleeve 4 of the dial indicator 3; in this embodiment, the fasteners a and b are both socket head cap screws.

The second through hole 9 is a stepped hole, and the bottom end of the jacket 11 is supported by a step of the stepped hole; the top end of the movable mandrel 6 is provided with a stop block 14, the stop block 14 is connected to the inner wall of the shell 1 in a sliding manner, and the measuring rod 5 of the dial indicator 3 is in contact with the upper surface of the stop block 14; the elastic piece is a spring 7, grooves 15 are formed in the centers of the upper surface of the stop block 14 and the lower surface of the end cover 2, the upper end and the lower end of the spring 7 are embedded in the grooves 15, and the measuring rod 5 of the dial indicator 3 is located in the center of the spring 7; the utility model has the further improvement that the first through hole 8 and the second through hole 9 are respectively arranged at the centers of the boss 19 and the end cover 2, and the first through hole 8 and the second through hole 9 are concentrically arranged; the verticality of the bottom end surface of the boss 19 with the first through hole 8 and the second through hole 9 is less than 0.001; the concentricity of the measuring block 13 and the movable core shaft 6 is less than 0.001.

The specific working principle of the embodiment is as follows: as shown in fig. 6, when using, an operator holds the shell 1 with one hand and the material 17 with the other hand, the bottom end surface of the boss 19 and the outer side surface of the taper block are both reference surfaces, the measuring block 13 is inserted into the taper hole to press the shell 1, if the taper angle of the material 17 is qualified, the lower end surface of the measuring block 13 is overlapped with the bottom circle of the taper hole of the material 17, and meanwhile, the outer side surface of the taper table 20 is attached to the inner wall of the taper hole; and when the front end of the measuring block 13 reaches the bottom of the taper hole and is stressed, the shell 1 is continuously pressed to enable the movable mandrel 6 to retract towards the inside of the shell 1 until the outer side surface of the frustum 20 is tightly attached to the

material part

17, and 3 degrees of the dial indicator are checked and recorded.

As shown in fig. 7, the cone angle gauge 18 is measured by the same method, the degree of the dial indicator 3 is checked and recorded, and the data measured by the cone angle gauge 18 and the material 17 are compared, because the dimension of the movable mandrel 6 retracted into the housing 1 in fig. 6 is obviously larger than the dimension of the movable mandrel 6 retracted into the housing 1 in fig. 7, the value recorded by the dial indicator 3 in fig. 6 is larger than the value recorded by the dial indicator 3 in fig. 7, and the exceeding value range is larger than the allowable error range, the cone angle of the cone hole of the material 17 is judged to be unqualified, and at this time, the angle of the tool rest of the machine tool needs to be readjusted; it should be noted that the sizes of the movable core shaft 6 retracted into the housing 1 shown in fig. 6 and 7 are different greatly, only for expressing the working principle of the present invention, but in actual operation, the two are not so much different.

Claims

1. The utility model provides an interior cone angle comparator of numerical control handle of a knife which characterized in that: comprises a shell (1), an end cover (2), a dial indicator (3), a movable mandrel (6) and an elastic piece; the top of the shell (1) is open, a cylindrical boss (19) is arranged at the bottom of the shell, a frustum (20) is arranged at the bottom of the boss (19), and a first through hole (8) extending into the shell (1) is formed in the boss (19) and the frustum (20); the end cover (2) is fixedly connected to the top of the shell (1), and a second through hole (9) is formed in the end cover (2); the dial indicator (3) is fixedly connected in the second through hole (9), and the measuring rod (5) of the dial indicator extends into the shell (1); the movable core shaft (6) is connected with the second through hole (9) in a sliding mode, the top end of the movable core shaft is limited in the shell (1), the measuring rod (5) of the dial indicator (3) is in contact with the top end of the movable core shaft (6), the top end of the movable core shaft (6) is fixedly connected with an annular measuring block (13), and the side portion of the measuring block (13) is arc-shaped; the elastic piece is arranged in the shell (1), and the upper end and the lower end of the elastic piece are respectively contacted with the end cover (2) and the movable core shaft (6) so that the measuring block (13) at the bottom end of the movable core shaft (6) extends to the outer side of the frustum (20).

2. The numerical control handle inner cone angle comparator as claimed in claim 1, wherein: a plurality of threaded holes are uniformly distributed in the top end of the shell (1), mounting holes are correspondingly formed in the top end of the end cover (2), and the end cover (2) is fixedly connected to the shell (1) through a fastening piece a.

3. The numerical control handle inner cone angle comparator as claimed in claim 2, wherein: a third through hole (10) penetrating through the second through hole (9) is transversely formed in the side portion of the end cover (2), an internal thread is formed in the end, close to the second through hole (9), of the third through hole (10), a jacket (11) is placed in the third through hole (10), and the sleeve (4) of the dial indicator (3) is clamped in the jacket (11); the clamping sleeve (11) is uniformly provided with a plurality of unconnected elastic clamping pieces (12), and the fastening piece b is connected in the third through hole (10) and props against the clamping pieces (12) to reduce the center of the clamping sleeve (11) so as to fix the sleeve (4) of the dial indicator (3).

4. The numerical control handle inner cone angle comparator as claimed in claim 3, wherein: the second through hole (9) is a stepped hole, and the bottom end of the jacket (11) is supported by the step of the stepped hole.

5. The numerical control handle inner cone angle comparator as claimed in claim 1, wherein: the top end of the movable mandrel (6) is provided with a stop block (14), the stop block (14) is connected to the inner wall of the shell (1) in a sliding mode, and a measuring rod (5) of the dial indicator (3) is in contact with the upper surface of the stop block (14).

6. The numerical control handle inner cone angle comparator as claimed in claim 5, wherein: the elastic piece is a spring (7), grooves (15) are formed in the centers of the upper surface of the stop block (14) and the lower surface of the end cover (2), the upper end and the lower end of the spring (7) are embedded in the grooves (15), and the measuring rod (5) of the dial indicator (3) is located in the center of the spring (7).

7. The numerical control handle inner cone angle comparator as claimed in claim 1, wherein: the first through hole (8) and the second through hole (9) are respectively arranged at the centers of the boss (19) and the end cover (2), and the first through hole (8) and the second through hole (9) are concentrically arranged.

8. The numerical control handle inner taper angle comparator as recited in claim 7, wherein: the verticality of the bottom end face of the boss (19) and the first through hole (8) and the second through hole (9) is less than 0.001.

9. The numerical control handle inner cone angle comparator as claimed in claim 1, wherein: the concentricity of the measuring block (13) and the movable core shaft (6) is less than 0.001.