Debugging jig special for packaging grating reading head chip

Abstract

The utility model discloses a special debugging jig for packaging a grating reading head chip, which comprises a base, a signal test lead-out wire, a pressing support bakelite frame arranged on the base, a reading head shell fixing enclosure frame positioned on the front surface of the pressing support bakelite frame and connected to the top surface of the base, and a thimble group arranged on the reading head shell fixing enclosure frame, the downward pressing supporting bakelite frame comprises a frame body and a downward pressing assembly which is arranged on the frame body and used for downward pressing the ejector pin set to the lower reading head shell. According to the utility model, the structure is compact, the operation is simple, the thimble group and the reading head chip can be adjusted by using the space XYZ direction adjustable principle, the thimble group is rapidly pressed down to the design position of the reading head housing, and the position of the thimble group is adjusted left and right to find the optimal space signal of the reading head chip. And the chip and the shell mounting base surface are ensured to accord with the optimal signal point, and the chip of the reading head is favorably packaged.

Description

Technical Field

[0001] The utility model relates to the field of special jigs for grating reading manufacturing and testing, in particular to a special debugging jig for grating reading head chip packaging. Background Art

[0002] The grating readhead is a precision device used to read the position information on the grating scale. According to the structural characteristics and usage scenarios, the grating readhead can be divided into multiple types, such as direct receiving type, mirror type, spectrometer type, metal grating reflection type, etc. Its working principle is to emit light to the grating surface through the internal light-emitting diode, and the reflected light returns to the readhead through the phase grating to generate a sinusoidal interference fringe signal. These signals can be processed and converted into digital or analog signals for further processing and analysis by control systems such as computers or PLCs; however, the grating readhead chip requires a large number of special professional fixtures in design, manufacturing, and testing, and the professional fixtures need to be repeatedly calibrated for spatial signal adjustment, which is troublesome. Utility Model Content

[0003] The purpose of the present invention is to provide a special debugging fixture for grating reading head chip packaging to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A special debugging fixture for grating readhead chip packaging, comprising a base, signal test lead wires, a downward pressure support bakelite frame mounted on the base, a readhead housing fixed frame located on the front of the downward pressure support bakelite frame and connected to the top surface of the base, and a pin assembly provided on the readhead housing fixed frame; the readhead housing fixed frame comprises a guide rail placed horizontally on the top surface of the base, a slider located on the guide rail, a screw connected transversely to the right side of the guide rail, and a readhead lower shell connected to the top surface of the slider; a push plate is mounted on the right side of the slider, and the right end of the screw extends beyond the right side of the push plate and is connected to a fine-tuning handwheel; the outer surface of the screw is sleeved with a No. 1 spring located between the guide rail and the push plate;

[0006] The top surface of the lower shell of the reading head is provided with two groups of side bars, and a placement space for the ejector group is formed between the two groups of side bars, and a lower shell stopper is provided between the two groups of side bars at the left side of the ejector group. The back of the side bar is provided with an indicator grating chip near the ejector group. The top surface of the lower shell of the reading head is also provided with a grating connecting plate;

[0007] The downward pressing support bakelite frame comprises a frame body and a downward pressing component arranged on the frame body and used for pressing the ejector pin group downward to the lower shell of the reading head.

[0008] Furthermore, the frame is composed of a back plate and vertical plates connected on both sides of the back plate; the downward pressure assembly includes a support plate horizontally connected between the two groups of vertical plates, solid blocks installed on both sides of the front of the back plate, a guide column vertically standing between the support plate and the solid block, and an operating part located in the middle of the front of the back plate, and a pressure plate is also provided between the solid block and the support plate, the column body of the guide column passes through the pressure plate from top to bottom, and a movable block is provided at the contact position between the guide column and the pressure plate, the movable block is fixed on the pressure plate, and the outer surface of the guide column is provided with a No. 2 spring at the position between the pressure plate and the support plate.

[0009] Furthermore, the operating part is composed of a connecting rod transmission mechanism connected to the front side of the back plate, a manual operating rod connected to the pin shaft of the connecting rod transmission mechanism, and a lower pressure rod and a push block connected to the connecting rod transmission mechanism. The push block is sleeved on the lower pressure rod, and the manual operating rod drives the connecting rod transmission mechanism to drive the push block and the lower pressure rod to press down the pressure plate, and the bottom end of the lower pressure rod is movably attached to the top surface of the pressure plate.

[0010] Furthermore, the top view of the pressing plate is a "T"-shaped structure, and the vertical section of the pressing plate is placed horizontally on the top surface of the ejector pin assembly.

[0011] Furthermore, the ejector pin group is integrated with the reading head chip and the signal test lead wire, and the top surface of the ejector pin group is detachably connected to the bottom surface of the pressure plate.

[0012] Furthermore, an experimental grating steel strip is attached to the upper end surface of the grating connecting plate.

[0013] The beneficial effects of the utility model are:

[0014] The utility model has the characteristics of compact structure and simple operation. It can use the spatial XYZ adjustable principle to adjust the ejector pin group and the reading head chip, quickly press the ejector pin group to the designed position of the reading head housing, meet the requirements of adjustable position of the reading head, and adjust the position of the ejector pin group left and right to find the best spatial signal of the reading head chip, ensure that the chip and the housing installation base surface meet the best signal point, which is beneficial to the packaging of the reading head chip, and also provides a reliable process guarantee for the subsequent production and pressure of the reading head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural stereogram of the utility model;

[0016] Figure 2 This is a structural diagram of the utility model in which the slider and the guide rail are combined;

[0017] Figure 3 This is a structural stereogram of the downward pressure support bakelite frame of the utility model;

[0018] Figure 4 This is a left side view of the structure of the utility model;

[0019] Figure 5 It is the structural front view of the utility model.

[0020] In the figure: 1 thimble group, 2 downward pressure support bakelite frame, 201 vertical plate, 202 back plate, 203 downward pressure rod, 204 push block, 205 connecting rod transmission mechanism, 206 manual operating lever, 207 support plate, 208 solid block, 209 pressure plate, 210 guide column, 211 movable block, 212 No. 2 spring, 3 reading head lower shell, 4 side block, 5 lower shell positioning block, 6 grating connecting plate, 7 slider, 701 push plate, 8 base, 9 limit block, 10 indicating grating chip, 11 lower shell stop block, 12 screw, 13 No. 1 spring, 14 foot pad, 15 guide rail, 16 fine-tuning handwheel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-5, which provides a technical solution for the utility model, a special debugging fixture for grating reading head chip packaging, including a base 8, a signal test lead-out line, a downward pressure support bakelite frame 2 installed on the base 8, a reading head shell fixed frame located on the front of the downward pressure support bakelite frame 2 and connected to the top surface of the base 8, and an ejector pin group 1 set on the reading head shell fixed frame; the reading head shell fixed frame includes a guide rail 15 placed horizontally on the top surface of the base 8, a slider 7 located on the guide rail 15, a screw 12 laterally connected to the right side of the guide rail 15, and a reading head lower shell 3 connected to the top surface of the slider 7, a push plate 701 is installed on the right side of the slider 7, and the screw 12 The right end of the slider 7 extends out of the right side of the push plate 701 and is connected to the fine-tuning handwheel 16. The outer surface of the screw 12 is located between the guide rail 15 and the push plate 701 and is sleeved with a No. 1 spring 13; wherein, the overall cross-sectional shape of the combination of the slider 7 and the push plate 701 is an inverted "L"-shaped structure, the slider 7 is slidably connected to the top surface of the guide rail 15, the screw 12 passes through the push plate 701 horizontally and extends into the guide rail 15. When the fine-tuning handwheel 16 is rotated clockwise, the fine-tuning handwheel 16 rotates on the screw 12 and generates a spiral driving force to drive the push plate 701 toward the guide rail 15, thereby allowing the lower shell 3 of the reading head to move to the left. At this time, the No. 1 spring 13 is compressed When the fine-tuning hand wheel 16 is rotated counterclockwise, the fine-tuning hand wheel 16 moves to the right. At this time, the compressed No. 1 spring 13 is relaxed and rebounds to push the push plate 701 to the right. At this time, the lower shell 3 of the reading head moves to the right. Two groups of side bars 4 are provided on the top surface of the lower shell 3 of the reading head. A placement space for the ejector group 1 is formed between the two groups of side bars 4, and a lower shell stopper 11 is provided between the two groups of side bars 4 at the left side of the ejector group 1. The back of the side bar 4 is provided with an indicating grating chip 10 near the position of the ejector group 1. A limit block 9 is provided on the top of the side bar 4. The setting of the limit block 9 can push the ejector group 1 toward the side bar 4, thereby realizing the Y-axis adjustment of the ejector group 1. Section; a grating connecting plate 6 is also provided on the top surface of the reading head lower shell 3; an experimental grating steel strip is affixed to the upper end surface of the grating connecting plate 6; it should be noted that at least three groups of foot pads 14 are arranged at the bottom end of the base 8, and the foot pads 14 are made of but not limited to rubber pads; the top end of the base 8 is located on the right side of the reading head lower shell 3 and is equipped with a lower shell positioning block 5, which is located on the right side of the push plate 701; wherein, through the cooperation of the guide rail 15, the slider 7, the screw 12 and the fine-tuning handwheel 16, the reading head lower shell 3 can be adjusted left and right and then the ejector group 1 can be adjusted in the X-axis direction, completing the spatial four-quadrant adjustable principle of the ejector group 1 and the reading head chip, and meeting the requirements of adjustable position of the reading head.

[0023] In this embodiment, the aforementioned downward pressing supporting bakelite frame 2 includes a frame body and a downward pressing assembly arranged on the frame body for pressing down the ejector group 1 to the lower shell 3 of the reading head; the frame body is composed of a back plate 202 and a vertical plate 201 connected on both sides of the back plate 202; the downward pressing assembly includes a support plate 207 horizontally connected between the two groups of vertical plates 201, a solid block 208 installed on both sides of the front of the back plate 202, a guide column 210 vertically standing between the support plate 207 and the solid block 208, and an operating part located in the middle position of the front of the back plate 202, and a pressing plate 209 is also provided between the solid block 208 and the support plate 207, and the column of the guide column 210 passes through the pressing plate 209 from top to bottom, and a movable block 211 is provided at the contact position between the guide column 210 and the pressing plate 209, and the movable block 211 is fixed on the pressing plate 209, and the outer surface of the guide column 210 is located between the pressing plate 209 and the support plate 207 It is sleeved with a No. 2 spring 212; wherein the movable block 211 mentioned has an overall cylindrical structure; the top view of the pressure plate 209 is a "T"-shaped structure, and the vertical section of the pressure plate 209 is horizontally placed on the top surface of the ejector group 1; the operating part is composed of a connecting rod transmission mechanism 205 connected to the front of the back plate 202, a manual operating rod 206 pin-connected to the connecting rod transmission mechanism 205, and a lower pressure rod 203 and a push block 204 connected to the connecting rod transmission mechanism 205, the push block 204 is sleeved on the lower pressure rod 203, and the manual operating rod 206 drives the connecting rod transmission mechanism 205 to drive the push block 204 and the lower pressure rod 203 to press down the pressure plate 209, and the bottom end of the lower pressure rod 203 is movably attached to the top surface of the pressure plate 209; it should be noted that the ejector group 1 is integrated with the reading head chip and the signal test lead-out line, and the top surface of the ejector group 1 and the bottom surface of the pressure plate 209 are detachably connected together.

[0024] Among them, the operating principle of the pressing component is: by pushing up or pulling down the manual operating rod 206, the connecting rod transmission mechanism 205 is driven to drive the push block 204 and the pressing rod 203 to rise or press down, so as to control whether the pressure plate 209 drives the ejector group 1 to press down together, so as to adjust the reading head chip, that is, adjust the reading head chip spatial signal, and ensure the reading head chip spatial position signal; the pressing component can realize Z-axial adjustment of the ejector group 1.

[0025] This special debugging fixture for grating reader chip packaging is used. When using it, the reader chip is placed on the ejector assembly 1 in advance, and the ejector assembly 1 is placed between the two sets of side bars 4. At this time, the lower shell block 11 is located on the left side of the ejector assembly 1. Then, the manual operating lever 206 is pulled down to drive the connecting rod transmission mechanism 205 to drive the lower pressure rod 203 to press down the pressure plate 209, so that the pressure plate 209 drives the ejector assembly 1 to press down to fix the reader chip. Then, the fine-tuning handwheel 16 is rotated clockwise or counterclockwise, so that the fine-tuning handwheel 16 cooperates with the screw 12 to drive the slider 7 and the reader lower shell 3 along the guide rail 15. The extension direction moves slowly left and right, thereby driving the read head chip and the ejector pin group 1 to move slowly left and right, realizing the adjustment of the spatial signal of the grating read head chip, so that the read head chip can find the best spatial signal, which can ensure that the chip and the shell mounting base of the read head shell fixed frame meet the best signal point, and the read head chip can be packaged; the grating read head chip packaging special debugging fixture can provide effective guarantees for read head development tests, signal adjustment, design parameter verification, etc., and provide reliable process guarantees for the subsequent industrialization of the read head, meeting the requirements of adjustable read head position.

[0026] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0027] The above embodiments only express the preferred implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent for the utility model; it should be understood that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention; in the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components; among them, there are many ways of detachable installation, for example, it can be through the method of plug-in and snap-fit, for example, through the method of bolt connection, etc.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special debugging fixture for grating readhead chip packaging, characterized by: The apparatus comprises a base, a signal test lead wire, a downward pressure support bakelite frame mounted on the base, a readhead housing fixed frame located on the front of the downward pressure support bakelite frame and connected to the top surface of the base, and a pin assembly provided on the readhead housing fixed frame; the readhead housing fixed frame comprises a guide rail placed horizontally on the top surface of the base, a slider located on the guide rail, a screw connected transversely to the right side of the guide rail, and a readhead lower shell connected to the top surface of the slider; a push plate is mounted on the right side of the slider, and the right end of the screw extends beyond the right side of the push plate and is connected to a fine-tuning handwheel; the outer surface of the screw is sleeved with a No. 1 spring located between the guide rail and the push plate; The top surface of the lower shell of the reading head is provided with two groups of side bars, and a placement space for the ejector group is formed between the two groups of side bars, and a lower shell stopper is provided between the two groups of side bars at the left side of the ejector group. The back of the side bar is provided with an indicator grating chip near the ejector group. The top surface of the lower shell of the reading head is also provided with a grating connecting plate; The downward pressing support bakelite frame comprises a frame body and a downward pressing component arranged on the frame body and used for pressing the ejector pin group downward to the lower shell of the reading head.

2. The dedicated debugging fixture for grating readhead chip packaging according to claim 1, characterized in that: The frame consists of a back plate and vertical plates connected on both sides of the back plate; the downward pressing assembly includes a support plate connected horizontally between the two groups of vertical plates, solid blocks installed on both sides of the front of the back plate, a guide column vertically standing between the support plate and the solid block, and an operating part located in the middle of the front of the back plate. A pressure plate is also provided between the solid block and the support plate, and the column body of the guide column passes through the pressure plate from top to bottom, and a movable block is provided at the contact position between the guide column and the pressure plate, and the movable block is fixed on the pressure plate. The outer surface of the guide column is located between the pressure plate and the support plate and is provided with a No. 2 spring.

3. The dedicated debugging fixture for grating readhead chip packaging according to claim 2, characterized in that: The operating part consists of a connecting rod transmission mechanism connected to the front side of the back plate, a manual operating rod connected to the pin shaft of the connecting rod transmission mechanism, and a lower pressure rod and a push block connected to the connecting rod transmission mechanism. The push block is sleeved on the lower pressure rod, and the manual operating rod drives the connecting rod transmission mechanism to drive the push block and the lower pressure rod to press the pressure plate downward, and the bottom end of the lower pressure rod is movably attached to the top surface of the pressure plate.

4. The dedicated debugging fixture for grating readhead chip packaging according to claim 2, characterized in that: The top view of the pressing plate is a "T"-shaped structure, and the vertical section of the pressing plate is placed horizontally on the top surface of the ejector pin assembly.

5. The dedicated debugging fixture for grating readhead chip packaging according to claim 1, characterized in that: The ejector pin group is connected to the reading head chip and the signal test lead wire as a whole, and the top surface of the ejector pin group is detachably connected to the bottom surface of the pressure plate.

6. The dedicated debugging fixture for grating readhead chip packaging according to claim 1, characterized in that: The upper end surface of the grating connecting plate is affixed with an experimental grating steel strip.

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