CN219337056U

CN219337056U - Device for measuring axial distance of workpiece in lathe

Info

Publication number: CN219337056U
Application number: CN202320836503.7U
Authority: CN
Inventors: 倪亮明; 徐建立; 金榆杰; 徐敬东; 王磊
Original assignee: Yuhuan Secondary Vocational Technical School
Current assignee: Yuhuan Secondary Vocational Technical School
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-07-14
Anticipated expiration: 2033-04-13

Abstract

The utility model provides a device for measuring axial distance of a workpiece in a lathe, and belongs to the technical field of measuring equipment. The measuring tool solves the problems that the existing measuring tool cannot measure the axial distance of a workpiece in a lathe with high precision and the like. The lathe comprises a lathe body, a spindle box, a transverse guide rail, a carriage assembly and a tool rest, wherein the measuring device comprises a first gauge stand detachably and fixedly connected to the transverse guide rail and a second gauge stand detachably and fixedly connected to the tool rest, the first gauge stand is positioned on the right side of the tool rest, a digital display indicator is fixed on the first gauge stand, a measuring rod of the digital display indicator is parallel to the transverse guide rail, a measuring head of the digital display indicator abuts against the right end face of the tool rest, the second gauge stand is fixedly connected to the left end face of the tool rest, a connecting rod is fixed on the second gauge stand, and a dial indicator is fixed on the end portion of the connecting rod. The measuring device can be used for measuring the axial distance of the workpiece in the lathe with high precision under the condition that the workpiece is not detached.

Description

Device for measuring axial distance of workpiece in lathe

Technical Field

The utility model belongs to the technical field of measuring equipment, and relates to a device for measuring axial distance of a workpiece in a lathe.

Background

A machine tool is a device for machining a workpiece. The lathe is mainly used for turning a rotating workpiece by a turning tool, and comprises a lathe body, a spindle box, a carriage assembly, a tool rest and the like, wherein the spindle box and the carriage assembly are oppositely arranged on the lathe body, a transverse guide rail is arranged on the right side of the spindle box on the lathe body, the carriage assembly is arranged on the transverse guide rail, and the tool rest is fixed on the carriage assembly. A rotatable main shaft is arranged in the main shaft box, the right end of the main shaft is fixedly connected with a clamp, and a turning tool is fixed on the tool rest. When the workpiece is machined, the workpiece is placed on the clamp and clamped, then the spindle rotates to drive the workpiece to rotate, the carriage assembly drives the turning tool to move and approach the workpiece, and the turning tool contacts the workpiece to carry out turning on the workpiece.

In order to ensure the qualification rate of workpiece processing, the workpiece needs to measure the processing dimension, such as the axial distance, the outer diameter, the aperture and the like, of the workpiece during the processing. For the measurement of the axial distance of the workpiece, the following measuring tools can be generally used: three-dimensional measuring instruments, hand-held measuring instruments (such as vernier calipers, inside micrometer, outside micrometer) and the like. For workpieces with low precision requirements, a handheld measuring tool can be adopted, and for workpieces with high precision requirements, a three-coordinate measuring machine is generally required. However, when the three-coordinate measuring machine is used for measuring, the workpiece needs to be detached from the lathe and then sent to the detection chamber for measurement, on one hand, the number of the three-coordinate measuring machines in the detection chamber is limited, and products sent to be inspected by a factory are more, generally, long queuing waiting time is needed, on the other hand, the workpiece needs to be clamped again for positioning when being processed next after being detached from the lathe, so that new errors can be generated, and time is needed for clamping again.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, provides a device for measuring the axial distance of a workpiece in a lathe, and solves the technical problem that the existing measuring tool cannot measure the axial distance of the workpiece in the lathe with high precision.

The aim of the utility model can be achieved by the following technical scheme:

the utility model provides a work piece axial distance measuring device in lathe, the lathe is including the lathe bed that is provided with headstock and transverse guide, transverse guide is located the right side of headstock, be provided with slidable carriage subassembly on the transverse guide, be fixed with the knife rest on the carriage subassembly, its characterized in that, work piece axial distance measuring device in the lathe includes detachable fixed connection first gauge stand and detachable fixed connection second gauge stand on the knife rest on transverse guide, first gauge stand is located the right side of knife rest, be fixed with the digital display pilot gauge on the first gauge stand, the measuring staff of digital display pilot gauge is parallel with transverse guide, and the gauge head of digital display pilot gauge supports on the right-hand member face of knife rest, second gauge stand fixed connection is on the left end face of knife rest, be fixed with the connecting rod mutually perpendicular with transverse guide on the second gauge stand, be fixed with the amesdial on the tip of connecting rod.

The diameter of the dial gauge head is d, and the gauge clearance when the dial gauge moves forward and backward is delta. It is assumed that the axial width of the groove on the outer side of the workpiece, i.e. the axial distance between the two sides of the groove, needs to be measured. During measurement, a workpiece is not required to be detached from a main shaft of a main shaft box, a second gauge stand is fixedly connected to the left end face of a tool rest, a measuring head of a dial indicator is inserted into a workpiece groove, then a first gauge stand is fixedly connected to a transverse guide rail, the measuring head of a digital display indicator is abutted against the right end face of the tool rest, then the tool rest is moved in the direction of the transverse guide rail, the measuring head of the dial indicator is enabled to be lightly touched on the first side face of the groove, at the moment, the reading of the dial indicator is a, at the same time, the reading of the digital display indicator is b, the reading of the digital display indicator is L, the axial width D of the groove is calculated, and the calculation formula of the axial width D of the groove is D=L+d-a-b-delta. Because the precision of the dial indicator and the digital display indicator can reach 0.001mm, the precision of the calculated axial distance can reach the micron level, and therefore, the measuring device can be used for measuring the axial distance of the workpiece in the lathe with high precision under the condition of not detaching the workpiece.

In the device for measuring the axial distance of the workpiece in the lathe, the digital display indicator is fixedly connected to the upper surface of the first gauge stand, a chute matched with the transverse guide rail is formed in the lower surface of the first gauge stand, the transverse guide rail is embedded into the chute, the first gauge stand is connected with a fastening screw in a threaded manner, and the end part of the fastening screw abuts against the transverse guide rail.

When a workpiece needs to be measured, a first gauge stand is placed on a transverse guide rail, the transverse guide rail is embedded into a chute, then the first gauge stand is moved along the transverse guide rail, a measuring head of a digital display indicator abuts against the right end face of a tool rest, the measuring distance of the digital display indicator is reserved, and then a fastening screw is screwed down, so that the first gauge stand is fixedly connected to the transverse guide rail; when the measurement is finished and a workpiece needs to be machined, the fastening screw is unscrewed, and then the first gauge stand is taken down from the transverse guide rail, so that the use is convenient.

In the device for measuring the axial distance of the workpiece in the lathe, a plurality of fastening screws are sequentially arranged along the length direction of the transverse guide rail. Therefore, the first gauge stand can be ensured to be fixed and stable on the transverse guide rail, and the accuracy of measurement is ensured.

In the device for measuring the axial distance of the workpiece in the lathe, a positioning groove is formed in the upper surface of the first gauge stand, and the digital display indicator is embedded into the positioning groove. The positioning groove has a positioning function, so that the digital display indicator can be prevented from shaking in the measuring process, and the measuring accuracy is ensured.

In the device for measuring the axial distance of the workpiece in the lathe, the second gauge stand is a magnetic stand, and the connecting rod is in threaded connection with the side face of the second gauge stand.

The side of the magnetic seat is provided with a threaded hole, and the connecting rod is in threaded connection with the threaded hole, so that the magnetic seat is convenient to install. When a workpiece needs to be measured, the magnetic seat is attached to the left end face of the tool rest, and then the magnetic switch of the magnetic seat is rotated to enable the magnetic seat to generate magnetic force and be adsorbed and fixed on the tool rest; when the measurement is finished and a workpiece needs to be machined, the magnetic switch of the magnetic seat is rotated to enable the magnetic force of the magnetic seat to disappear, and the magnetic seat is taken down from the tool rest, so that the tool rest is convenient to use.

In the device for measuring the axial distance of the workpiece in the lathe, the positioning strip is fixed on the left end face of the tool rest, the second gauge stand is positioned above the positioning strip, and the lower surface of the second gauge stand is abutted against the positioning strip. The positioning strip has a positioning function, and is convenient to fix the second gauge stand on the tool rest.

Compared with the prior art, the utility model has the following advantages:

after the first gauge stand, the second gauge stand, the dial indicator and the digital display indicator are arranged, the workpiece can be measured at high precision in the lathe without being detached from the lathe when the axial distance is measured.

Drawings

Fig. 1 is a schematic top view of the axial distance measuring device for the workpiece.

Fig. 2 is a schematic front view of the axial distance measuring device for the workpiece.

Fig. 3 is a schematic cross-sectional view of the structure at A-A in fig. 2.

In the figure, 1, a lathe bed; 2. a spindle box; 3. a transverse guide rail; 4. a carriage assembly; 5. a tool holder; 6. a first gauge stand; 6a, positioning grooves; 6b, a chute; 7. a second gauge stand; 7a, a magnetic switch; 8. a digital display indicator; 8a, measuring rod; 9. a dial gauge; 10. a connecting rod; 11. a fastening screw; 12. a positioning strip; 13. a workpiece; 13a, grooves.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1-3, an axial distance measuring device for a workpiece in a lathe is arranged in the lathe, the lathe comprises a lathe body 1 provided with a spindle box 2 and transverse guide rails 3, the transverse guide rails 3 are positioned on the right side of the spindle box 2, two transverse guide rails 3 are arranged side by side, a slidable carriage assembly 4 is arranged on the transverse guide rails 3, and a tool rest 5 is fixed on the carriage assembly 4. The workpiece 13 is fixedly mounted on the spindle of the headstock 2. The device for measuring the axial distance of the workpiece in the lathe comprises a first gauge stand 6 which is detachably and fixedly connected to the transverse guide rail 3 and a second gauge stand 7 which is detachably and fixedly connected to the tool rest 5, wherein a digital display indicator 8 is fixedly connected to the first gauge stand 6, and a dial indicator 9 is fixedly connected to the second gauge stand 7. The first gauge stand 6 is positioned on the right side of the tool rest 5, a measuring rod 8a of the digital display indicator 8 is parallel to the transverse guide rail 3, and a measuring head of the digital display indicator 8 abuts against the right end face of the tool rest 5. The second gauge stand 7 is fixedly connected to the left end face of the tool rest 5, a connecting rod 10 perpendicular to the transverse guide rail 3 is fixed to the second gauge stand 7, and a dial indicator 9 is fixed to the end portion of the connecting rod 10.

The digital display indicator 8 is fixedly connected to the upper surface of the first gauge stand 6. The upper surface of the first gauge stand 6 is provided with a positioning groove 6a, and the digital display indicator 8 is embedded into the positioning groove 6 a. The digital display indicator 8 can be firmly adhered in the positioning groove 6a of the first gauge stand 6 through glass cement, or a transparent cover plate is arranged and covered on the first gauge stand 6 to fix the digital display indicator 8; or the digital display indicator 8 is stably fixed on the first gauge stand 6 through the binding rope. The lower surface of the first gauge stand 6 is provided with a chute 6b matched with the transverse guide rail 3, the transverse guide rail 3 is embedded into the chute 6b, and the first gauge stand 6 can slide along the transverse guide rail 3. The first gauge stand 6 is connected with a fastening screw 11 in a threaded manner, and the end part of the fastening screw 11 abuts against the transverse guide rail 3. The number of the fastening screws 11 is plural and arranged in order along the longitudinal direction of the lateral guide rail 3, and the number of the fastening screws 11 may be two or three.

The second gauge stand 7 is a magnetic stand. The magnetic seat is also called a magnetic switch 7a type magnetic seat, and is an instrument formed by a rotatable rectangular magnetic element, two magnetic yoke sets and an upper non-magnetic block and a lower non-magnetic block positioned between the two magnetic yoke sets, the magnetic seat can have magnetic force by rotating the magnetic element, and the magnetic force of the magnetic seat disappears by reversely rotating the magnetic element. The internal structure of the magnetic seat is an existing structure and will not be described in detail. The magnetic seat is provided with a magnetic switch 7a connected with the rectangular magnetic element, the rectangular magnetic element can be driven to rotate when the magnetic switch 7a is rotated, and the side surface of the magnetic seat is provided with a threaded hole. The left end face of the tool rest 5 is fixedly provided with a positioning strip 12, the positioning strip 12 is horizontally and longitudinally arranged, the second gauge stand 7 is positioned above the positioning strip 12, the lower surface of the second gauge stand 7 is abutted against the positioning strip 12, and the upper surface of the second gauge stand 7 is one surface provided with a magnetic switch 7 a. The side of the second gauge stand 7 is vertically arranged, the connecting rod 10 is horizontally and longitudinally arranged, one end of the connecting rod 10 is in threaded connection with a threaded hole in the side of the second gauge stand 7, the other end of the connecting rod 10 faces the workpiece 13, and the dial indicator 9 is fixed to the other end of the connecting rod 10.

The diameter of the gauge head of the dial gauge 9 is d=2.000 mm, and the gauge clearance when the dial gauge 9 moves forward and backward is δ=0.015 mm. It is necessary to measure the axial width of the groove 13a on the outer side face of the workpiece 13, i.e., the axial distance between the two side faces of the groove 13 a. The workpiece 13 does not need to be detached from the spindle of the headstock 2 during measurement. Firstly, the second gauge stand 7 is attached to the left end face of the tool rest 5, the magnetic switch 7a of the second gauge stand 7 faces upwards, the lower surface of the second gauge stand 7 is attached to the positioning strip 12, the connecting rod 10 faces the workpiece 13, the measuring head of the dial indicator 9 is inserted into the groove 13a of the workpiece 13, and then the magnetic switch 7a of the second gauge stand 7 is rotated to enable the second gauge stand 7 to generate magnetic force and be adsorbed and fixed on the tool rest 5; then, the first gauge stand 6 is placed on the transverse guide rail 3, the transverse guide rail 3 is embedded into the sliding groove 6b, then the first gauge stand 6 is moved along the transverse guide rail 3, the measuring head of the digital display indicator 8 is abutted against the right end face of the tool rest 5, the measuring distance of the digital display indicator 8 is reserved, and then the fastening screw 11 is screwed down, so that the first gauge stand 6 is fixedly connected to the transverse guide rail 3. And then moving the tool rest 5 along the direction of the transverse guide rail 3, so that the measuring head of the dial indicator 9 is in light touch with the first side surface of the groove 13a, at the moment, the reading of the dial indicator 9 is a, and meanwhile, the reading of the digital display indicator 8 is reset to zero, and then, moving the tool rest 5 along the direction of the transverse guide rail 3 until the measuring head of the dial indicator 9 is in light touch with the second side surface of the groove 13a, at the moment, the reading of the dial indicator 9 is b, the reading of the digital display indicator 8 is L, and the axial width D of the groove 13a is calculated, wherein the calculation formula of the axial width D of the groove 13a is D=L+d-a-b-delta. Assuming a=0.014 mm, b=0.0111 mm, l= 21.154mm, d=21.154 mm+2.000mm-0.014mm-0.011mm-0.015 mm= 23.114mm. When the measurement is finished and the workpiece 13 needs to be machined, the fastening screw 11 is unscrewed, then the first gauge stand 6 is taken down from the transverse guide rail 3, then the magnetic switch 7a of the second gauge stand 7 is rotated to enable the magnetic force of the second gauge stand 7 to disappear, and the second gauge stand 7 is taken down from the tool rest 5, so that the tool rest is convenient to use.

Because the precision of the dial indicator 9 and the digital display indicator 8 can reach 0.001mm, the precision of the calculated axial distance can reach the micron level, the measuring device can be used for measuring the axial distance of the workpiece 13 with high precision in a lathe without detaching the workpiece 13, and at least the axial width of the groove 13a on the outer side surface of the workpiece 13 can be measured with high precision.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Various modifications or additions to the described embodiments may be made by those skilled in the art to which the utility model pertains or may be substituted in a similar manner without departing from the spirit of the utility model or beyond the scope of the appended claims.

Claims

1. The utility model provides a work piece axial distance measuring device in lathe, lathe is including lathe bed (1) that is provided with headstock (2) and transverse guide (3), transverse guide (3) are located the right side of headstock (2), be provided with slidable carriage subassembly (4) on transverse guide (3), be fixed with knife rest (5) on carriage subassembly (4), its characterized in that, work piece axial distance measuring device in the lathe includes first gauge stand (6) and the second gauge stand (7) of detachable fixed connection on knife rest (5) on transverse guide (3), first gauge stand (6) are located the right side of knife rest (5), be fixed with digital display indicator (8) on first gauge stand (6), measuring rod (8 a) and transverse guide (3) parallel, and digital display indicator (8) support on the right-hand member face of knife rest (5), second gauge stand (7) fixed connection is on the left end face of knife rest (5) and transverse guide (10) on connecting rod (10) of connecting rod (10) looks fixed.

2. The device for measuring the axial distance of the workpiece in the lathe according to claim 1, wherein the digital display indicator (8) is fixedly connected to the upper surface of the first gauge stand (6), a sliding groove (6 b) matched with the transverse guide rail (3) is formed in the lower surface of the first gauge stand (6), the transverse guide rail (3) is embedded into the sliding groove (6 b), a fastening screw (11) is connected to the first gauge stand (6) in a threaded manner, and the end part of the fastening screw (11) abuts against the transverse guide rail (3).

3. The device for measuring the axial distance of a workpiece in a lathe according to claim 2, wherein the fastening screws (11) are arranged in sequence along the length direction of the transverse guide rail (3).

4. The device for measuring the axial distance of the workpiece in the lathe according to claim 2, wherein a positioning groove (6 a) is formed in the upper surface of the first gauge stand (6), and the digital display indicator (8) is embedded into the positioning groove (6 a).

5. The device for measuring the axial distance of a workpiece in a lathe according to any one of claims 1 to 4, wherein the second gauge stand (7) is a magnetic stand, and the connecting rod (10) is screwed on the side surface of the second gauge stand (7).

6. The device for measuring the axial distance of the workpiece in the lathe according to claim 5, wherein a positioning strip (12) is fixed on the left end face of the tool rest (5), the second gauge stand (7) is positioned above the positioning strip (12), and the lower surface of the second gauge stand (7) is abutted against the positioning strip (12).